Working With Water - the online magazine for the international water industry

Latest News

IDA launches desalination academy
The International Desalination Association (IDA) has created the IDA Desalination Academy, a global institute of desalination higher learning that will offer an accredited set of training events available in various global locations.
Pall supplies water treatment technology to Qatar Petroleum
Contractor SEG (Société d'Entreprise & de Gestion) Qatar has selected Pall Corp to supply a state-of-the-art water treatment solution for Qatar Petroleum’s Ras Laffan Emergency and Safety College.
Dow products win environmental awareness award
Dow Water & Process Solutions’ ultrafiltration and reverse osmosis products were utilised by electronics specialist Spansion Inc in winning the 2011 City of Austin, Texas, USA Environmental Awareness Award in the large business category.
B&V appoints new global water business president
Black & Veatch has appointed Cindy Wallis-Lage as president of its global water business.
Alfa Laval wins SEK110mn decanter order for water treatment in Canada
Alfa Laval is to supply newly developed decanters for the cleaning of industrial wastewater in Canada.

Research Trends

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.
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.
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.
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.
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.

Webinars

What does the future hold for renewable energy in the Middle East?
We are pleased to announce a new webinar from Renewable Energy Focus in association with the World Future Energy Summit, which addresses the future for renewable energy in the Middle East.
Filtration+Separation Webinar with Elmarco Inc.
The new Filtration+Separation webinar, in association with Elmarco, is free to access. Looking at nanofibers, the webinar will look at the nanofiber formation process, the benefits of nanofibers and the most suitable markets for their use.

Podcasts

July/August issue of Filtration+Separation
Mark Holmes introduces the July/August issue of Filtration+Separation.
Podcast introducing the new issue of Desalination
Claire Young introduces the latest issue of Desalination magazine, the biannual supplement to Filtration + Separation and sister publication, World Pumps.
Ofwat's Final Determination
Claire Young presents an overview of Ofwat's Final Determination process and what it means to you, the customer.
Editorial podcast - 15th January 2010
Claire Young presents a round-up of this weeks news from Working with Water

Features

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.
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.
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.
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.

Downloads

Seawater desalination: Current trends and challenges
Changing climate patterns, population growth pressures and the limited availability of new and inexpensive fresh water supplies are shifting the water industry's attention. In an emerging trend, the world is reaching to the ocean for fresh water. Nikolay Voutchkov from Water Globe Consulting explains recent trends and explains his predictions for the future market.
Back to basics with desalination
This is another in our occasional series of ‘basic' articles. Courtesy of the Waterworks museum in the UK, we present some brief insights into the background and development of desalination pumps. The article gives an overview of reverse osmosis and multi-stage flash process.
Tubular case pumps for desalination
Bryan Orchard discusses the use of tubular casing water feed pumps in KBS's Frankenthal plant, Germany.
Using alternate energy sources: Decentralised membrane systems
Oil and water shortages are turning attention towards alternative energy sources. Rajindar Singh looks at the potential of fuel cells as an energy source for filtration, especially with water production processes.
Wastewater pre-treatment: China looks to ultrafiltration
Flora Tong explains the role which ultrafiltration is playing as the city adapts to modern needs and an increased demand for water.

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