http://workingwithwater.filtsep.com/ Copyright Elsevier Ltd Intuitiv Ltd (www.intuitiv.net) Thu, 17 May 2012 12:50:04 GMT http://workingwithwater.filtsep.com/ http://workingwithwater.filtsep.com/_common/img/template/wwwater/site-logo.gif http://workingwithwater.filtsep.com/view/25744/control-of-acid-mine-drainage-using-flue-gas-desulfurisation-sludge-cap-with-coal-combustion-residues/ The long-term physical and chemical effects of using coal-combustion residues (CCRs), in particular fixated flue gas desulfurisation (FGD) sludge, have been monitored as a major component in the reclamation of a pyritic refuse deposit. This was undertaken to determine the consequences of placing these controversial materials in an unrestricted environment. Thu, 17 May 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/25744/control-of-acid-mine-drainage-using-flue-gas-desulfurisation-sludge-cap-with-coal-combustion-residues/ http://workingwithwater.filtsep.com/view/25742/effects-of-anthropogenic-inputs-on-organic-quality-of-urbanised-streams/ Dissolved organic carbon is examined in streams with varying anthropogenic influences, using a technique to determine organic quality with and without upstream wastewater treatment plant inputs. Effluent-derived organics can persist for a long way downstream of discharge points. Tue, 15 May 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/25742/effects-of-anthropogenic-inputs-on-organic-quality-of-urbanised-streams/ http://workingwithwater.filtsep.com/view/25741/radioactive-wastewater-purification-using-titanosilicate-materials/ This study reviews the literature on the uptake of radiocations on titanosilicate materials, in particular the influence of physicochemical parameters on uptake. The use of titanosilicates is found to be beneficial as cleaning agents for radioactive effluents. Mon, 14 May 2012 11:30:00 GMT http://workingwithwater.filtsep.com/view/25741/radioactive-wastewater-purification-using-titanosilicate-materials/ http://workingwithwater.filtsep.com/view/25652/replacement-predictions-for-drinking-water-networks-through-historical-data/ This study uses historical data from more than 100 years to predict the future replacement needs for drinking water distribution networks. The historical data provide a reliable prediction, and the data fit well with commonly used lifetime distribution curves. Thu, 10 May 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/25652/replacement-predictions-for-drinking-water-networks-through-historical-data/ http://workingwithwater.filtsep.com/view/25650/possible-impacts-of-floods-and-droughts-on-water-quality/ This paper reviews changes in water quality, with all its consequences, during selected recent extreme hydrological situations in the Czech Republic. Wed, 09 May 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/25650/possible-impacts-of-floods-and-droughts-on-water-quality/ http://workingwithwater.filtsep.com/view/25453/review-of-isotope-and-chemical-markers-to-differentiate-sources-of-nitrate-contamination/ This paper targets improved management of water bodies for preserving water quality through nitrate source determination. The use of stable isotope and chemical markers is considered, to differentiate between nitrate sources to surface waters. Chemical markers are also assessed to differentiate sewage and manure nitrate inputs. Wed, 02 May 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/25453/review-of-isotope-and-chemical-markers-to-differentiate-sources-of-nitrate-contamination/ http://workingwithwater.filtsep.com/view/25514/re-powering-water-reclaim-systems/ In the mining industry, production is directly related to the plant’s total pumping capacity, and reclaim systems are the main source of water. With the pressure on to improve processes, Petar Ostojic from Neptuno Pumps discusses how pump manufacturers can help mining companies re-power their reclaim water systems with custom engineering solutions, improving pump capacity and reducing energy consumption. Tue, 01 May 2012 22:00:00 GMT http://workingwithwater.filtsep.com/view/25514/re-powering-water-reclaim-systems/ http://workingwithwater.filtsep.com/view/25455/optimal-operation-of-brackish-water-reverse-osmosis-desalination-plant/ This work analyses the optimal plant operation of brackish water reverse osmosis (BWRO) desalination, to reduce the specific energy consumption. Model-based optimisation was developed to guide RO operation, with the modelling results validated by plant data. Mon, 30 Apr 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/25455/optimal-operation-of-brackish-water-reverse-osmosis-desalination-plant/ http://workingwithwater.filtsep.com/view/25439/detection-of-cryptosporidium-in-miniaturised-fluidic-devices/ This review article summarises recent developments in novel engineering systems for the detection of Cryptosporidium in drinking water. Fri, 27 Apr 2012 12:00:00 GMT http://workingwithwater.filtsep.com/view/25439/detection-of-cryptosporidium-in-miniaturised-fluidic-devices/ http://workingwithwater.filtsep.com/view/25349/one-stop-shop-for-high-purity-media/ The pharmaceutical and biotechnical industries need increasing volumes of very clean water. The requirement for high purity media systems, is rising accordingly, but water generation quality fluctuations or supply bottlenecks can have far-reaching production line consequences. Bosch's Helmut Sommer reports. Tue, 24 Apr 2012 12:11:00 GMT http://workingwithwater.filtsep.com/view/25349/one-stop-shop-for-high-purity-media/ http://workingwithwater.filtsep.com/view/25189/maintaining-deep-well-submersibles/ Maintenance of submersible pumps is complex due to the depth at which they are installed, which makes access difficult. Correct facility design to extend the time between failures and the monitoring of several parameters to determine the pumps’ performance during operation are therefore vital factors, as Miguel Ortiz from FACSA and Alejandro Palomo from Salinas y Perez report. Tue, 17 Apr 2012 10:49:00 GMT http://workingwithwater.filtsep.com/view/25189/maintaining-deep-well-submersibles/ http://workingwithwater.filtsep.com/view/25038/infiltration-tracer-experiment-into-rapid-contaminant-transport-from-the-surface-to-wells-in-fractured-rock/ An infiltration tracer experiment has been used to investigate contaminant transport from the surface to wells drilled into bedrock. The surface-applied tracer reached the pumped wells quickly, in just hours. Thus infiltration tracer experiments can provide valuable information on contaminant transport. Thu, 12 Apr 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/25038/infiltration-tracer-experiment-into-rapid-contaminant-transport-from-the-surface-to-wells-in-fractured-rock/ http://workingwithwater.filtsep.com/view/25059/paris-fountains-get-a-new-lease-of-life-with-ksb/ When the fountains in the Trocadero Gardens near the Eiffel Tower in Paris needed extensive renovation work, it was not only a question of what equipment to choose but also how to get it through very restricted access routes. KSB's solution was to dismantle and then rebuild the machines powering the fountains in situ. Tue, 10 Apr 2012 21:31:00 GMT http://workingwithwater.filtsep.com/view/25059/paris-fountains-get-a-new-lease-of-life-with-ksb/ http://workingwithwater.filtsep.com/view/25034/vibratory-shear-enhanced-process-to-treat-brackish-water-reverse-osmosis-concentrate-with-high-silica-content/ A vibratory shear enhanced process (VSEP) has been used to treat concentrate from a spiral wound reverse osmosis (RO) system, to enhance feed water recovery. The high shear rate restricted the deposition of nanocolloidal silica on the VSEP membrane, but it was found that barium sulphate precipitation limited the performance of the VSEP system. Tue, 10 Apr 2012 11:14:00 GMT http://workingwithwater.filtsep.com/view/25034/vibratory-shear-enhanced-process-to-treat-brackish-water-reverse-osmosis-concentrate-with-high-silica-content/ http://workingwithwater.filtsep.com/view/24933/opportunities-and-challenges-in-recent-developments-in-forward-osmosis/ The modern opportunities of forward osmosis are considered, with five key challenges faced by FO systematically reviewed and discussed. These are concentration polarisation, membrane fouling, reverse solute diffusion, and the need for new membrane development and draw solute design in FO. The intrinsic relationships between these five challenges are explored. Wed, 04 Apr 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24933/opportunities-and-challenges-in-recent-developments-in-forward-osmosis/ http://workingwithwater.filtsep.com/view/24947/a-brief-guide-to-ifat/ World Pumps takes a look at the key themes covered by German water and sewage trade fair IFAT which in 2012 promises to be the biggest ever. Tue, 03 Apr 2012 20:53:00 GMT http://workingwithwater.filtsep.com/view/24947/a-brief-guide-to-ifat/ http://workingwithwater.filtsep.com/view/24932/impacts-of-climate-change-on-cyanobacteria-occurrence-toxicity-and-water-quality-management/ This special issue of Water Research comprises a collection of papers addressing the potential impact of climate change on cyanobacteria, and the resulting effects on drinking water quality and supply. Tue, 03 Apr 2012 16:20:00 GMT http://workingwithwater.filtsep.com/view/24932/impacts-of-climate-change-on-cyanobacteria-occurrence-toxicity-and-water-quality-management/ http://workingwithwater.filtsep.com/view/24840/operational-experience-of-solar-membrane-distillation-demonstration-plant-in-gran-canaria/ Performance data for a solar membrane distillation desalination plant in Gran Canaria, Spain have been analysed for a five-year period. There is a direct correlation between solar radiation and the feed and distillate volume. This technology is suitable for small supplies, isolated populations, and autonomous systems. Fri, 30 Mar 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/24840/operational-experience-of-solar-membrane-distillation-demonstration-plant-in-gran-canaria/ http://workingwithwater.filtsep.com/view/24838/ozone-biofiltration-as-alternative-to-reverse-osmosis-for-removing-ppcps-from-treated-wastewater/ The removal of pharmaceuticals and personal care products (PPCPs) and other micropollutants from treated wastewater has been compared using reverse osmosis and ozonation. Ozone/biofiltration and RO are comparable for micropollutant removal, but ozonation is better than RO in terms of energy consumption, water recovery, and waste production. Thu, 29 Mar 2012 17:00:00 GMT http://workingwithwater.filtsep.com/view/24838/ozone-biofiltration-as-alternative-to-reverse-osmosis-for-removing-ppcps-from-treated-wastewater/ http://workingwithwater.filtsep.com/view/24702/oil-and-gas-separating-the-streams-and-improving-performance/ Multiphase simulation can improve performance of oil and gas separation equipment. David Stanbridge of the Swift Technology Group explains. Thu, 22 Mar 2012 10:37:00 GMT http://workingwithwater.filtsep.com/view/24702/oil-and-gas-separating-the-streams-and-improving-performance/ http://workingwithwater.filtsep.com/view/24662/acid-mine-drainage-can-we-fix-the-mess/ Mining is a major driver of the South African economy. However, the country’s water supply is under serious threat of pollution from untreated acid water draining from mines. Keith Gass from Verder Pumps discusses the issues involved and considers the role that peristaltic dosing pumps can play in rectifying the pH balance of mine water. Tue, 20 Mar 2012 11:17:00 GMT http://workingwithwater.filtsep.com/view/24662/acid-mine-drainage-can-we-fix-the-mess/ http://workingwithwater.filtsep.com/view/24609/solar-diffusion-driven-desalination-for-decentralised-water-production/ A unique operating mode is developed to enhance distillation performance in this solar diffusion driven desalination process. Water and air recirculation in the process enhances distillation performance, and external water cooling for the distillation process is eliminated. Tue, 20 Mar 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24609/solar-diffusion-driven-desalination-for-decentralised-water-production/ http://workingwithwater.filtsep.com/view/24607/legionellae-in-engineered-systems-and-use-of-quantitative-microbial-risk-assessment-to-predict-exposure/ This review of current Legionellae detection and quantification methods discusses the conditions that favour the occurrence of Legionellae in engineered systems. It looks at quantitative microbial risk assessment as a tool to predict Legionellae exposure risk. Mon, 19 Mar 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24607/legionellae-in-engineered-systems-and-use-of-quantitative-microbial-risk-assessment-to-predict-exposure/ http://workingwithwater.filtsep.com/view/24548/impact-of-operating-conditions-for-crossflow-ceramic-membrane-ultrafiltration/ The impact of operating conditions on permeate flux and process economics has been determined for crossflow ceramic membrane ultrafiltration of surface water. It is found that minimising membrane area – by maximising flux – results in the lowest total plant cost. Minimising flux decline results in a higher total plant cost. Thu, 15 Mar 2012 09:25:00 GMT http://workingwithwater.filtsep.com/view/24548/impact-of-operating-conditions-for-crossflow-ceramic-membrane-ultrafiltration/ http://workingwithwater.filtsep.com/view/24545/nanocomposite-adsorbent-for-removal-of-heavy-metals-from-industrial-effluent/ This work reports on the development of a nanocomposite cation-exchange adsorbent, analytical applications, and its conducting behaviour. The composite cation-exchange adsorbent is successfully applied to the treatment of sewage water and synthetic mixtures, and it can also be used as a conducting material. Thu, 15 Mar 2012 09:11:00 GMT http://workingwithwater.filtsep.com/view/24545/nanocomposite-adsorbent-for-removal-of-heavy-metals-from-industrial-effluent/ http://workingwithwater.filtsep.com/view/24495/effect-of-water-conditions-on-anti-bacterial-performance-of-silver-nanoparticles/ This study evaluates the effect of natural water composition on the bactericidal and physicochemical properties of silver nanoparticles (AgNPs) stabilised with three different polymeric compounds. The results may help to explain the risk associated with discharging AgNPs in natural aquatic systems. Tue, 13 Mar 2012 13:50:00 GMT http://workingwithwater.filtsep.com/view/24495/effect-of-water-conditions-on-anti-bacterial-performance-of-silver-nanoparticles/ http://workingwithwater.filtsep.com/view/24353/hollow-fibre-membrane-life-in-membrane-bioreactors/ Membrane life is a significant component of the operating costs of membrane bioreactors (MBRs). Here the membrane life has been determined by analysis of all ZeeWeed MBRs installed in North America since their introduction in 1996. It is found that the estimated membrane life of the current product should be greater than 10 years. Thu, 08 Mar 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24353/hollow-fibre-membrane-life-in-membrane-bioreactors/ http://workingwithwater.filtsep.com/view/24351/treatment-of-textile-wastewater-in-aerobic-sequencing-batch-reactor-using-novel-bacterial-consortium/ This study shows that the novel bacterial consortium Bx has the potential to decolourise simulated BB150 effluent. Biological decolourisation is based on biodegradation and biosorption phenomena. An SBR inoculated with a novel bacterial consortium Bx can remove 88–97 percent of colour, and 95–98 percent of COD. Wed, 07 Mar 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24351/treatment-of-textile-wastewater-in-aerobic-sequencing-batch-reactor-using-novel-bacterial-consortium/ http://workingwithwater.filtsep.com/view/24345/development-of-antifouling-reverse-osmosis-membranes-for-water-treatment/ Progress in the development of antifouling reverse osmosis membranes is reviewed, including exploration of new monomers and improvements in the fabrication process. Surface modification of conventional RO membranes by physical and chemical methods is considered, as well as the development of hybrid organic/inorganic RO membranes with good fouling resistance. Tue, 06 Mar 2012 16:20:00 GMT http://workingwithwater.filtsep.com/view/24345/development-of-antifouling-reverse-osmosis-membranes-for-water-treatment/ http://workingwithwater.filtsep.com/view/24227/role-of-reverse-salt-diffusion-in-colloidal-fouling-in-forward-osmosis/ The impact of reverse draw solute diffusion on colloidal fouling behaviour in forward osmosis (FO) has been studied. The type of draw solution plays a key role in controlling the rate and extent of reverse salt diffusion. Optimisation of membrane selectivity is key to efficient FO operation. Thu, 01 Mar 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/24227/role-of-reverse-salt-diffusion-in-colloidal-fouling-in-forward-osmosis/ http://workingwithwater.filtsep.com/view/24226/performance-analysis-of-evacuated-multi-stage-solar-water-desalination-system/ A multi-stage solar desalination system has been developed using latent heat recovery. The design and operating parameters are studied, and the distillate yield is found to decrease with increasing water salinity. The proposed desalination system is a viable option for rural and urban communities. Wed, 29 Feb 2012 17:25:00 GMT http://workingwithwater.filtsep.com/view/24226/performance-analysis-of-evacuated-multi-stage-solar-water-desalination-system/ http://workingwithwater.filtsep.com/view/24225/effects-of-chromium-on-activated-sludge-and-on-performance-of-wastewater-treatment-plants/ Wastewater treatment plant performance can be seriously affected by the presence of chromium. Studies have found that Cr(VI) and Cr(III) may stimulate activated sludge growth at concentrations below 5–20 mg/l, but severely inhibit growth at relatively high concentrations. Wed, 29 Feb 2012 16:10:00 GMT http://workingwithwater.filtsep.com/view/24225/effects-of-chromium-on-activated-sludge-and-on-performance-of-wastewater-treatment-plants/ http://workingwithwater.filtsep.com/view/24224/oil-and-gas-separation-processes-in-oil-and-gas-extraction/ The systems involved in the extraction of crude oil and natural gas from their sources are a vital industrial application for filtration and related separation equipment. The processes involved are in a state of considerable change, under pressures of all kinds: technological, environmental and economic. Ken Sutherland reviews the impact of these changes on the requirements for this equipment. Wed, 29 Feb 2012 15:40:00 GMT http://workingwithwater.filtsep.com/view/24224/oil-and-gas-separation-processes-in-oil-and-gas-extraction/ http://workingwithwater.filtsep.com/view/24088/almatec-customised-fix-for-abrasive-pv-slurry/ The manufacturing of wafers for photovoltaic (PV) solar panels requires a precise process that puts production equipment to the test. Several of these processes involve highly abrasive slurries, which are a mixture of glycol and powdered silicon carbide. The challenge is to find equipment that can handle both wet and dry applications in a corrosive environment. Thu, 23 Feb 2012 10:18:00 GMT http://workingwithwater.filtsep.com/view/24088/almatec-customised-fix-for-abrasive-pv-slurry/ http://workingwithwater.filtsep.com/view/24045/removal-of-phosphate-from-wastewater-using-two-stage-superconducting-magnetic-separation/ A superconducting magnetic separation process combining open-gradient and high-gradient superconducting magnetic separation (OGMS–HGMS) is investigated as a rapid and highly efficient treatment process for wastewater primarily containing phosphate. Thu, 23 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/24045/removal-of-phosphate-from-wastewater-using-two-stage-superconducting-magnetic-separation/ http://workingwithwater.filtsep.com/view/23980/filtration-demonstration-as-reverse-osmosis-pre-treatment-in-industrial-water-treatment-plant/ This demonstration study aimed to improve reverse osmosis pre-treatment in a water treatment plant. Three pre-treatment options with different filtration stages were considered, with dual-stage pressurized filtration giving the best results. Tue, 21 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23980/filtration-demonstration-as-reverse-osmosis-pre-treatment-in-industrial-water-treatment-plant/ http://workingwithwater.filtsep.com/view/24026/supplying-to-the-us-oil-and-gas-industry/ New oil and gas projects offer significant opportunities and challenges to the US oil and gas industry and to the pump business. Many customers are seeing attractive economics, so they want deliveries as soon as possible. In this article Keith Loria talks to a number of suppliers and finds out what the demands are and how they can match them. Tue, 21 Feb 2012 09:54:00 GMT http://workingwithwater.filtsep.com/view/24026/supplying-to-the-us-oil-and-gas-industry/ http://workingwithwater.filtsep.com/view/24025/xylem-makes-a-big-splash/ The splitting off by ITT Corporation of some of its most well known brands to form Xylem, a company dedicated to the water and wastewater industry, did take some people by surprise. However, the move has proved to be a shrewd one and holds great promise for the future as Mike Kuchenbrod explained to World Pumps. Tue, 21 Feb 2012 09:53:00 GMT http://workingwithwater.filtsep.com/view/24025/xylem-makes-a-big-splash/ http://workingwithwater.filtsep.com/view/23975/effects-of-fenton-treatment-on-pharmaceuticals-and-personal-care-products-in-wastewater/ It is found that Fenton oxidation is effective for the degradation of pharmaceuticals and personal care products (PPCPs) in wastewater. Fenton oxidation causes effluent organic matter to break down into smaller fragments, with the formation of several aldehydes and carboxylic acids. Mon, 20 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23975/effects-of-fenton-treatment-on-pharmaceuticals-and-personal-care-products-in-wastewater/ http://workingwithwater.filtsep.com/view/23860/assessing-the-risks-to-human-health-from-co2-leakage-into-groundwater/ A quantitative methodology to assess the risks to human health from CO2 leakage has been developed, as geological carbon capture and storage (CCS) becomes a viable option to reduce atmospheric CO2 emissions. Risk is sensitive to hydrological parameters (stratification, dispersion, sorption), while toxicity has a lesser impact on risk than hydrological parameters. The results show an unexpected increase in risk for arsenic in comparison to lead. Thu, 16 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23860/assessing-the-risks-to-human-health-from-co2-leakage-into-groundwater/ http://workingwithwater.filtsep.com/view/23921/hybacs-treats-wide-range-of-organic-industrial-wastewater/ A new wastewater treatment system demonstrates performance and versatility in a growing number of installations, including municipal sewage and high strength industrial, food, livestock, textile and hospital wastewaters. The hyper-active and dense biomass naturally attaches in proprietary porous rotors, enabling a system very economical in land, energy and capital cost. Tue, 14 Feb 2012 17:00:00 GMT http://workingwithwater.filtsep.com/view/23921/hybacs-treats-wide-range-of-organic-industrial-wastewater/ http://workingwithwater.filtsep.com/view/23919/cost-effective-desalination-innovation-continues-to-lower-desalination-costs/ Water scarcity, climate change and increased global energy consumption are all having an impact on technology and investment trends and leading to the implementation of more desalination projects. Anthony Bennett looks at how current and future technologies and manufacturing practices are constantly lowering the cost of desalination with every new innovation made. Tue, 14 Feb 2012 16:28:00 GMT http://workingwithwater.filtsep.com/view/23919/cost-effective-desalination-innovation-continues-to-lower-desalination-costs/ http://workingwithwater.filtsep.com/view/23854/enhancement-of-textile-wastewater-treatment-process-using-nanofiltration/ The use of nanofiltration has been studied as a post-treatment after coagulation–flocculation of a mixture of effluents from textile industry operations. The use of microfiltration pretreatment leads to an enhanced nanofiltration permeate in terms of flux and quality. Tue, 14 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23854/enhancement-of-textile-wastewater-treatment-process-using-nanofiltration/ http://workingwithwater.filtsep.com/view/23850/effects-of-ozone-and-ozone-peroxide-on-trace-organics-and-ndma-in-drinking-water-and-water-reuse/ Ozone and ozone/peroxide are effective in reducing the potential formation of N-nitrosodimethylamine (NDMA). Both ozone and ozone/peroxide remove trace organic contaminants (TOrCs), and hydrogen peroxide provides a significant benefit in the removal of TOrCs in surface water. Mon, 13 Feb 2012 11:30:00 GMT http://workingwithwater.filtsep.com/view/23850/effects-of-ozone-and-ozone-peroxide-on-trace-organics-and-ndma-in-drinking-water-and-water-reuse/ http://workingwithwater.filtsep.com/view/23729/thin-film-composite-hollow-fibre-membranes-for-pressure-retarded-osmosis-with-high-power-density/ A new thin-film composite hollow fibre membrane has been developed for pressure retarded osmosis. High power density can be achieved using seawater and wastewater brines, demonstrating that this hollow fibre membrane has potential for PRO in harvesting salinity gradient energy. Thu, 09 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23729/thin-film-composite-hollow-fibre-membranes-for-pressure-retarded-osmosis-with-high-power-density/ http://workingwithwater.filtsep.com/view/23728/progress-in-real-time-control-applied-to-biological-nitrogen-removal-from-wastewater/ Real-time control is a key issue in optimising the process of nitrogen bioremoval. The potential of indirect parameters for real-time control is investigated here for both municipal and strongly nitrogenous wastewaters. Tue, 07 Feb 2012 15:00:00 GMT http://workingwithwater.filtsep.com/view/23728/progress-in-real-time-control-applied-to-biological-nitrogen-removal-from-wastewater/ http://workingwithwater.filtsep.com/view/23675/similarities-in-effluent-organic-matter-characteristics-from-connecticut-wastewater-treatment-plants/ This comprehensive study of effluent organic matter, using geochemical techniques, finds that effluent organic matter is similar to microbially derived natural organic matter. It is found that the characteristics of the effluent organic matter are similar, regardless of the treatment plant. Mon, 06 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23675/similarities-in-effluent-organic-matter-characteristics-from-connecticut-wastewater-treatment-plants/ http://workingwithwater.filtsep.com/view/23575/influence-of-membrane-orientation-and-organic-fouling-on-boron-and-arsenic-removal-by-forward-osmosis-membrane/ Membrane orientation and organic fouling have been investigated in terms of their influence on the performance of forward osmosis membranes in the removal of boron and arsenic. Rejection of both was higher in FO mode compared to the pressure-driven RO mode. Thu, 02 Feb 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23575/influence-of-membrane-orientation-and-organic-fouling-on-boron-and-arsenic-removal-by-forward-osmosis-membrane/ http://workingwithwater.filtsep.com/view/23572/improved-water-quality-in-response-to-pollution-control-measures-at-masan-bay-korea/ This study evaluates the first application of a pollutant abatement policy in a highly developed coastal area of Korea. Land–sea pollutant interactions were addressed by a six-year systematic monitoring effort, and a reduction in land-based pollutants was successfully achieved by control of point sources. Tue, 31 Jan 2012 11:30:00 GMT http://workingwithwater.filtsep.com/view/23572/improved-water-quality-in-response-to-pollution-control-measures-at-masan-bay-korea/ http://workingwithwater.filtsep.com/view/23574/submersible-pump-solution-for-kenyan-water/ A water services provider in Kenya's coast province has installed a new set of vertical multistage pumps at its water treatment plant following a failure. Mawasco, based in Malindi, Kenya, procured a set of Poldap Dalgic Pump sets from Konya in Turkey as replacements. Shem Oirere tells the story. Tue, 31 Jan 2012 11:28:00 GMT http://workingwithwater.filtsep.com/view/23574/submersible-pump-solution-for-kenyan-water/ http://workingwithwater.filtsep.com/view/23525/review-of-treatment-technologies-for-water-reverse-osmosis-concentrates/ This review paper looks at treatment technologies for reverse osmosis (RO) concentrates. The analysis considers volume reduction of the effluent, reducing the pollutant load, and the recovery of valuable compounds, salts and nutrients. It also considers advanced techniques aimed at zero liquid discharge. Mon, 30 Jan 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23525/review-of-treatment-technologies-for-water-reverse-osmosis-concentrates/ http://workingwithwater.filtsep.com/view/23396/integrated-approach-to-evaluate-emerging-contaminants-in-brazilian-drinking-water/ Estrogen and xenoestrogen levels have been chemical and biologically assessed in raw and drinking water samples from Brazilian intakes. It was found that estrogenicity is a better guiding parameter to select samples and chemical substances to be investigated. This integrated approach can guide the development of adequate treatment technologies. Thu, 26 Jan 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23396/integrated-approach-to-evaluate-emerging-contaminants-in-brazilian-drinking-water/ http://workingwithwater.filtsep.com/view/23446/calculating-pipes-and-duty-points-with-vogel-software-tools/ Energy savings can be obtained in several ways, but before manufacturers turn to hydraulic optimisation of units or apply new electrical drives or powerful control systems, they should look at the dimensions of the pipelines and make sure they get the duty point specifications right. This can be done with the aid of web-based tools from Vogel Software. Tue, 24 Jan 2012 20:25:00 GMT http://workingwithwater.filtsep.com/view/23446/calculating-pipes-and-duty-points-with-vogel-software-tools/ http://workingwithwater.filtsep.com/view/23395/flux-patterns-and-propensity-for-membrane-fouling-during-desalination-of-seawater-by-forward-osmosis/ This study of seawater desalination by forward osmosis found that the dominant inorganic fouling is caused by polymerised silica scaling, in which the fouling layer comprises silica scaling surrounded by biopolymers. While the flux saw a significant decrease, it can be partially recovered by water flushing. Tue, 24 Jan 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23395/flux-patterns-and-propensity-for-membrane-fouling-during-desalination-of-seawater-by-forward-osmosis/ http://workingwithwater.filtsep.com/view/23393/are-all-membrane-reactors-equal-from-an-environmental-point-of-view/ Life Cycle Assessment (LCA) has been used to compare different membrane bioreactor configurations with increasing complexity. Energy use and sludge disposal were identified as major environmental hot spots, and it was also found that there is an inverse relationship between technological complexity and environmental impact. Mon, 23 Jan 2012 11:45:00 GMT http://workingwithwater.filtsep.com/view/23393/are-all-membrane-reactors-equal-from-an-environmental-point-of-view/ http://workingwithwater.filtsep.com/view/23239/electrochemical-removal-of-ammonia-nitrogen-nitrate-and-carbon-from-aquaculture-wastewater/ This review of electrochemical technologies looks at how nitrate and organic carbon contaminants can be removed from aquaculture wastewater in a ‘green’ manner. Mechanisms of contaminant removal in electrochemical and bio-electrochemical reactors are discussed. It is found that 99% of organic matter and nitrate can be removed using bio-electrochemical cells. Thu, 19 Jan 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23239/electrochemical-removal-of-ammonia-nitrogen-nitrate-and-carbon-from-aquaculture-wastewater/ http://workingwithwater.filtsep.com/view/23284/hydropower-from-ksb-pumps-as-turbines/ Brazil is known for its use of hydropower, but when a small, remote tourism complex in a Brazilian nature reserve needed additional power supply, a conventional hydropower solution was deemed too expensive. A more affordable option came in the form of a KSB centrifugal pump driving an electric motor acting as a generator. Tue, 17 Jan 2012 18:57:00 GMT http://workingwithwater.filtsep.com/view/23284/hydropower-from-ksb-pumps-as-turbines/ http://workingwithwater.filtsep.com/view/23238/testing-the-resilience-of-water-supply-systems-to-long-droughts/ A method has been developed to test the resilience of water supply drought plans to extended droughts. Reservoir models are used interactively to expose managers to an unfolding drought, highlighting decision points and weaknesses in drought plans. The method is demonstrated for two water supply systems in the UK. Tue, 17 Jan 2012 10:00:00 GMT http://workingwithwater.filtsep.com/view/23238/testing-the-resilience-of-water-supply-systems-to-long-droughts/ http://workingwithwater.filtsep.com/view/23237/magnetically-induced-membrane-vibration-for-fouling-control-in-mbrs/ A novel magnetic vibrating module system has been developed, which shows promise as an energy-efficient process to limit fouling in membrane bioreactors used to treat wastewater. Mon, 16 Jan 2012 12:00:00 GMT http://workingwithwater.filtsep.com/view/23237/magnetically-induced-membrane-vibration-for-fouling-control-in-mbrs/ http://workingwithwater.filtsep.com/view/23106/hurricane-katrina-impact-on-water-quality-in-east-pearl-river-mississippi/ The water quality of the East Pearl River in southern Mississippi was examined before and after Hurricane Katrina in 2005. The analysis finds that hurricane-induced vegetative destruction within this river basin has not greatly changed carbon or suspended particulate concentrations, suggesting that the system is resilient. Thu, 12 Jan 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/23106/hurricane-katrina-impact-on-water-quality-in-east-pearl-river-mississippi/ http://workingwithwater.filtsep.com/view/23155/water-recycling-in-the-brewing-industry/ Effluent should be recycled back into brewery operations with less reticence than is currently the case, according to South African wastewater specialists Talbot & Talbot. Throughout many parts of the world there are areas or entire regions where water is scarce and water quality highly suspect. In these situations beer quality is often compromised and production schedule disrupted. The use of properly treated effluent presents the brewer with a safer option and greater security of supply. Wed, 11 Jan 2012 16:00:00 GMT http://workingwithwater.filtsep.com/view/23155/water-recycling-in-the-brewing-industry/ http://workingwithwater.filtsep.com/view/23114/refurbishment-for-a-bristol-sewage-plant/ Bedford Pumps contributed to an extensive refurbishment of Ashton Avenue sewage pumping station, one of Wessex Water's largest and most critical facilities in the Bristol region. Included was the installation of three storm pumps and two dry-weather flow pumps, plus condition monitors, on time and under budget. Tue, 10 Jan 2012 14:28:00 GMT http://workingwithwater.filtsep.com/view/23114/refurbishment-for-a-bristol-sewage-plant/ http://workingwithwater.filtsep.com/view/23103/current-trends-and-future-prospects-for-seawater-reverse-osmosis-desalination/ This comprehensive review looks at technological innovations in seawater reverse osmosis processes. RO membrane and rack design improvements are described in detail, and there is a special focus on the use of renewable energies for medium/large capacities. Tue, 10 Jan 2012 12:00:00 GMT http://workingwithwater.filtsep.com/view/23103/current-trends-and-future-prospects-for-seawater-reverse-osmosis-desalination/ http://workingwithwater.filtsep.com/view/22983/positively-charged-nanofiltration-membrane-to-treat-textile-industry-wastewater/ A novel positively charged nanofiltration membrane has been created using the self-assembly method, which exhibits high charge and controlled pore size for high rejection and flux. The membrane is demonstrated with the removal of methylene blue dye from a synthetic dye house effluent. Mon, 09 Jan 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/22983/positively-charged-nanofiltration-membrane-to-treat-textile-industry-wastewater/ http://workingwithwater.filtsep.com/view/22957/comparison-between-hybrid-and-stand-alone-mbrs-treating-municipal-wastewater/ Membrane bioreactors (MBRs) are now an accepted municipal wastewater treatment process. This study compares a stand-alone MBR with series and parallel hybrid MBR configurations. Fri, 06 Jan 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/22957/comparison-between-hybrid-and-stand-alone-mbrs-treating-municipal-wastewater/ http://workingwithwater.filtsep.com/view/22954/salinity-dynamics-as-a-tool-for-water-resources-management-in-coastal-zones/ Salinity dynamics is proposed for water resources management in the coastal zone, since salinity is a good environmental indicator. Salinity dynamics helps determine which water bodies critically need management. Thu, 05 Jan 2012 09:00:00 GMT http://workingwithwater.filtsep.com/view/22954/salinity-dynamics-as-a-tool-for-water-resources-management-in-coastal-zones/ http://workingwithwater.filtsep.com/view/22951/corrosion-in-drinking-water-pipes-the-importance-of-green-rust/ The complex crystallographic composition of corrosion products is studied by X-ray diffraction, and results compared for different sample pre-treatments. Green rusts are found to be much more abundant in corrosion scales than has been assumed so far. Wed, 04 Jan 2012 12:23:00 GMT http://workingwithwater.filtsep.com/view/22951/corrosion-in-drinking-water-pipes-the-importance-of-green-rust/ http://workingwithwater.filtsep.com/view/22568/frequency-of-use-controls-leaching-of-chemicals-from-disinfected-drinking-water-bottles/ This study investigates the magnitude and variability of antimony and bromine leaching from reused plastic containers that have been subjected to UV and/or temperature-driven disinfection, in particular for safe water distribution in developing countries. Thu, 15 Dec 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22568/frequency-of-use-controls-leaching-of-chemicals-from-disinfected-drinking-water-bottles/ http://workingwithwater.filtsep.com/view/22566/evaluation-of-surface-urban-energy-and-water-balance-scheme-in-los-angeles-and-vancouver/ This urban energy and water balance model uses a small number of commonly measured meteorological variables and information about the surface cover. The model is tested against direct flux measurements over several years in Vancouver, Canada and Los Angeles, USA. Tue, 13 Dec 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22566/evaluation-of-surface-urban-energy-and-water-balance-scheme-in-los-angeles-and-vancouver/ http://workingwithwater.filtsep.com/view/22565/high-recovery-brackish-water-desalination-process-without-precipitation-chemicals/ This novel high water recovery desalination process is devoid of chemicals, with alkaline scaling species precipitated by pH increase through CO2 air stripping. Pilot plant data show water recovery increasing from 78 to 90 percent, and recoveries exceeding 95 percent are anticipated from carbonate-rich concentrates. Mon, 12 Dec 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22565/high-recovery-brackish-water-desalination-process-without-precipitation-chemicals/ http://workingwithwater.filtsep.com/view/22432/on-farm-treatment-of-dairy-soiled-water-using-aerobic-woodchip-filters/ The ability of aerobic woodchip filters to treat dairy soiled water (DSW) has been studied. This low-cost, easily maintained system is shown to be effective in treating DSW under operational conditions. Thu, 08 Dec 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22432/on-farm-treatment-of-dairy-soiled-water-using-aerobic-woodchip-filters/ http://workingwithwater.filtsep.com/view/22479/energy-optimization-for-grundfos-booster-sets/ C. Kallesøe, J. Aarestrup and K. Rokkjær of Grundfos analyse the control and design of booster sets from an energy perspective. They investigate how the structure and control can be used to minimize energy consumption, and demonstrate that equally sized pumps equipped with speed control and running at the same speed are a safe design choice. Tue, 06 Dec 2011 20:58:00 GMT http://workingwithwater.filtsep.com/view/22479/energy-optimization-for-grundfos-booster-sets/ http://workingwithwater.filtsep.com/view/22431/distinguishing-between-management-induced-and-climatic-trends-in-phreatic-groundwater-levels/ A method is proposed for distinguishing between climatic and management-induced contributions to observed trends in phreatic groundwater levels over a 10-year period at a number of wells in Belgium. Ignoring this difference would lead to flawed conclusions about the effectiveness of water management strategies. Tue, 06 Dec 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22431/distinguishing-between-management-induced-and-climatic-trends-in-phreatic-groundwater-levels/ http://workingwithwater.filtsep.com/view/22429/integrity-sensor-to-assess-performance-of-low-pressure-membrane-modules/ This new integrity sensor provides a low-cost, sensitive, compact, online instrument with a rapid response for assessing the integrity of pre-treatment modules in water treatment facilities. The improved design eliminates fouling on the second membrane. Mon, 05 Dec 2011 11:35:00 GMT http://workingwithwater.filtsep.com/view/22429/integrity-sensor-to-assess-performance-of-low-pressure-membrane-modules/ http://workingwithwater.filtsep.com/view/22387/thin-film-composite-membranes-for-engineered-osmosis/ A novel thin-film composite membrane is proposed to address the problem of low water flux in engineered osmosis (EO) membrane-based separation technology. Thu, 01 Dec 2011 19:00:00 GMT http://workingwithwater.filtsep.com/view/22387/thin-film-composite-membranes-for-engineered-osmosis/ http://workingwithwater.filtsep.com/view/22386/assessing-water-quality-in-marine-protected-areas-off-southern-california/ Storm events have been sampled across 16 sites in marine protected areas off southern California, to study how urban storm drains impact water quality in these supposedly safeguarded areas. Thu, 01 Dec 2011 18:00:00 GMT http://workingwithwater.filtsep.com/view/22386/assessing-water-quality-in-marine-protected-areas-off-southern-california/ http://workingwithwater.filtsep.com/view/22385/uv-chlorine-advanced-oxidation-treatment-for-removal-of-emerging-contaminants/ This work compares UV/HOCl and UV/ClO2 advanced oxidation processes with the state-of-the-art UV/H2O2 advanced oxidation process under realistic treatment conditions, to allow precise scale-up and find the most energy- and cost-efficient solution. Thu, 01 Dec 2011 17:40:00 GMT http://workingwithwater.filtsep.com/view/22385/uv-chlorine-advanced-oxidation-treatment-for-removal-of-emerging-contaminants/ http://workingwithwater.filtsep.com/view/22337/surge-protection-in-tall-buildings/ As water companies reduce water pressure in the domestic mains to reduce leakages, tall buildings are becoming reliant on booster pumps to provide water at sufficient pressure to enable normal daily living. This has revealed a potential threat – hydraulic shock, says Gary Wheatley from Wilo (U.K.) Ltd. Tue, 29 Nov 2011 17:00:00 GMT http://workingwithwater.filtsep.com/view/22337/surge-protection-in-tall-buildings/ http://workingwithwater.filtsep.com/view/22149/survey-of-chemical-dosing-for-sulfide-control-in-the-australian-water-industry/ This industry survey looks at several major Australian water utilities, and catalogues chemical dosing practice at a variety of field sites. It summarises current practice in Australia, and discusses key opportunities for more cost-effective sulfide control. Thu, 24 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22149/survey-of-chemical-dosing-for-sulfide-control-in-the-australian-water-industry/ http://workingwithwater.filtsep.com/view/22148/catchment-flow-estimation-using-artificial-neural-network-in-euphrates-basin/ An Artificial Neural Network (ANN) modelling approach has been used to simulate the streamflow in the Upper Euphrates Basin, utilising its ability to model nonlinear hydrological processes. Tue, 22 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22148/catchment-flow-estimation-using-artificial-neural-network-in-euphrates-basin/ http://workingwithwater.filtsep.com/view/22146/ppsu-pei-blend-membranes-for-humic-acid-removal-by-ultrafiltration/ The blending of two polymers (PPSU and PEI) is explored to exploit the advantages of each material. The aim is to develop a membrane with negative charge and hydrophilic properties, which is beneficial for humic acid removal and reduced fouling. Mon, 21 Nov 2011 13:00:00 GMT http://workingwithwater.filtsep.com/view/22146/ppsu-pei-blend-membranes-for-humic-acid-removal-by-ultrafiltration/ http://workingwithwater.filtsep.com/view/22061/quantifying-exchangeable-calcium-in-activated-sludge-flocs-and-sludge-settleability/ The exchangeable calcium in activated sludge flocs is quantified next to that present in the floc structure as enmeshed solid precipitates. Both exchangeable and precipitated calcium solids fractions play an important role in the settling properties of the sludge flocs. Thu, 17 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/22061/quantifying-exchangeable-calcium-in-activated-sludge-flocs-and-sludge-settleability/ http://workingwithwater.filtsep.com/view/22053/carbon-and-energy-footprint-of-wastewater-treatment-processes/ The carbon and energy footprint of a water treatment process has been modelled with varying COD fractions. While enhancing primary sedimentation reduces the process energy deficit, increased COD removal in primaries may adversely affect nutrient removal downstream. Increasing soluble COD (sCOD) increases aeration energy demand and reduces biogas recovery. Wed, 16 Nov 2011 11:00:00 GMT http://workingwithwater.filtsep.com/view/22053/carbon-and-energy-footprint-of-wastewater-treatment-processes/ http://workingwithwater.filtsep.com/view/22052/scaling-propensity-of-seawater-in-ro-boron-removal-processes/ The boron concentration in seawater desalination by reverse osmosis (RO) is controlled by increasing pH, which promotes scaling propensity. This study provides new data to determine scaling limits in boron control processes, and analyses the possibility of simplifying current boron control design to a single-pass system. Tue, 15 Nov 2011 18:15:00 GMT http://workingwithwater.filtsep.com/view/22052/scaling-propensity-of-seawater-in-ro-boron-removal-processes/ http://workingwithwater.filtsep.com/view/22051/san-tai-efficiency-for-taiwan-power-plant/ It is often said that the bigger the project the bigger the potential energy savings. This is true for the Datan power plant, the largest of its kind in north Taiwan. Part of the reason for its success is the use of 12 sets of highly efficient, corrosion-resistant, low maintenance San Tai centrifugal water pumps giving an efficiency of 89%. Tue, 15 Nov 2011 15:59:00 GMT http://workingwithwater.filtsep.com/view/22051/san-tai-efficiency-for-taiwan-power-plant/ http://workingwithwater.filtsep.com/view/21846/influence-of-membrane-properties-on-the-silt-density-index/ The Silt Density Index (SDI) was measured for eight commercial 0.45 µm membranes, and variations observed between the membranes. It is therefore recommended to use standardized membranes with constant properties. Using a membrane with a high membrane resistance results in a low SDI value. Wed, 09 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/21846/influence-of-membrane-properties-on-the-silt-density-index/ http://workingwithwater.filtsep.com/view/21845/magnetic-removal-of-surfactants-from-wastewater-using-micron-scale-iron-oxide-powders/ This sustainable process for the removal of surfactants from wastewater achieved up to 90 percent removal of cationic surfactants using magnetite, and 50 to 90 percent removal of all surfactants using hematite. The adsorption and magnetic separation times are applicable to a real urban plant. Tue, 08 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/21845/magnetic-removal-of-surfactants-from-wastewater-using-micron-scale-iron-oxide-powders/ http://workingwithwater.filtsep.com/view/21844/coupled-model-tree-genetic-algorithm-scheme-to-assess-biofouling-in-pipelines/ A computerized learning algorithm has been developed for assessing the extent of biofouling formations on the inner surfaces of water supply pipelines. Mon, 07 Nov 2011 10:00:00 GMT http://workingwithwater.filtsep.com/view/21844/coupled-model-tree-genetic-algorithm-scheme-to-assess-biofouling-in-pipelines/ http://workingwithwater.filtsep.com/view/21784/scale-formation-and-control-in-high-pressure-membrane-water-treatment-systems/ This review considers the mechanism of scale formation and the properties of alkaline, non-alkaline, and silica-based scales encountered when reverse osmosis is used in desalination, brackish water, and wastewater recycling applications. Thu, 03 Nov 2011 10:34:00 GMT http://workingwithwater.filtsep.com/view/21784/scale-formation-and-control-in-high-pressure-membrane-water-treatment-systems/ http://workingwithwater.filtsep.com/view/21773/managed-aquifer-recharging-of-treated-wastewater/ Wastewater quality changes have been compared after passing through a calcareous vadose zone in a managed aquifer recharge field trial. The concentration reductions for phosphorus, fluoride, iron, and organic carbon were >30%, although aerobic conditions in the vadose zone were not conducive for removing nitrate. Wed, 02 Nov 2011 17:25:00 GMT http://workingwithwater.filtsep.com/view/21773/managed-aquifer-recharging-of-treated-wastewater/ http://workingwithwater.filtsep.com/view/21744/vsd-energy-savings-in-submersible-systems/ While considerable energy savings can be achieved by installing variable speed drives in standard pump systems, VSDs are less common in submersible applications, being more difficult to implement. However, it is well worth the effort as the energy savings and process improvements can be enormous. Here, ABB examines the main factors to consider. Tue, 01 Nov 2011 16:30:00 GMT http://workingwithwater.filtsep.com/view/21744/vsd-energy-savings-in-submersible-systems/ http://workingwithwater.filtsep.com/view/21559/selected-papers-from-the-6th-international-conference-on-marine-pollution-and-ecotoxicology/ Papers from the 6th International Conference on Marine Pollution and Ecotoxicology, held 31 May–3 June 2010 at City University of Hong Kong, have been published in a special issue of Marine Pollution Bulletin. Mon, 24 Oct 2011 16:42:00 GMT http://workingwithwater.filtsep.com/view/21559/selected-papers-from-the-6th-international-conference-on-marine-pollution-and-ecotoxicology/ http://workingwithwater.filtsep.com/view/21558/optimised-mf-membrane-cleaning-in-indirect-potable-reuse-scheme/ An optimised chemical cleaning protocol has been demonstrated for a membrane pilot plant. Bench-scale results were replicated at pilot scale for real municipal wastewater, and an operating envelope for chemical cleaning conditions has been established for full flux recovery. Mon, 24 Oct 2011 16:38:00 GMT http://workingwithwater.filtsep.com/view/21558/optimised-mf-membrane-cleaning-in-indirect-potable-reuse-scheme/ http://workingwithwater.filtsep.com/view/21556/developing-financially-self-sustaining-water-and-wastewater-management-policies/ A new approach for water utilities to be financially self-sustaining has been proposed. Complex interconnections and feedback loops in water and wastewater network management are considered using a causal loop diagram. Mon, 24 Oct 2011 16:32:00 GMT http://workingwithwater.filtsep.com/view/21556/developing-financially-self-sustaining-water-and-wastewater-management-policies/ http://workingwithwater.filtsep.com/view/21555/performance-of-polymeric-membranes-treating-ozonated-surface-water/ The effect of pre-ozonation of the feed surface water on the flux and rejection performance of polymeric nanofiltration and ultrafiltration membranes has been investigated. The fouling and dissolved organic carbon (DOC) rejection characteristics of the membranes were found to depend on the ozonation dosage. Mon, 24 Oct 2011 16:30:00 GMT http://workingwithwater.filtsep.com/view/21555/performance-of-polymeric-membranes-treating-ozonated-surface-water/ http://workingwithwater.filtsep.com/view/21554/effects-of-membrane-orientation-on-forward-osmosis-performance/ This work investigates the effects of membrane orientation on forward osmosis (FO) performance, and provides a guideline for the orientation selection in various FO applications. The FO mode provides better performance when severe fouling occurs. Mon, 24 Oct 2011 16:14:00 GMT http://workingwithwater.filtsep.com/view/21554/effects-of-membrane-orientation-on-forward-osmosis-performance/ http://workingwithwater.filtsep.com/view/21553/recovery-of-toxic-metal-ions-from-washing-effluent-containing-excess-apcs/ This work looks at the recovery of toxic metals from effluents containing an excess of aminopolycarboxylate chelants (APCs) in solution, using an ion-selective solid phase extraction system containing immobilized macrocyclic material. Mon, 24 Oct 2011 16:11:00 GMT http://workingwithwater.filtsep.com/view/21553/recovery-of-toxic-metal-ions-from-washing-effluent-containing-excess-apcs/ http://workingwithwater.filtsep.com/view/21551/evaluation-of-rainfall-over-mountainous-terrain-from-a-water-resources-perspective/ The usefulness of several commonly used precipitation products over complex mountainous terrain with scarce data – for two regions in the tropical Andes – has been evaluated from the perspective of water resources management. Mon, 24 Oct 2011 16:00:00 GMT http://workingwithwater.filtsep.com/view/21551/evaluation-of-rainfall-over-mountainous-terrain-from-a-water-resources-perspective/ http://workingwithwater.filtsep.com/view/21552/hydrogel-biochar-composites-for-organic-contaminant-removal-from-wastewater/ Environmentally benign hydrogel-biochar composites have been evaluated for phenol removal, and found to offer effective remediation of wastewater. Mon, 24 Oct 2011 16:00:00 GMT http://workingwithwater.filtsep.com/view/21552/hydrogel-biochar-composites-for-organic-contaminant-removal-from-wastewater/ http://workingwithwater.filtsep.com/view/21513/culture-media-new-carrier-aids-biological-sewage-water-treatment/ A new carrier medium for biological sewage water treatment has been developed that result in significant increases in facility capacities. Stefan Christof Bidinger, Bernd Dzedzig, Dr.-Ing. Markus Geiger and Bernd Rauch of Multi Umwelttechnologie AG describe how the Mutag BioChip is tackling micro-organisms in the treatment of sewage. Fri, 21 Oct 2011 11:26:00 GMT http://workingwithwater.filtsep.com/view/21513/culture-media-new-carrier-aids-biological-sewage-water-treatment/