H2O Innovation commissions pathfinding Indian membrane plant
Canada's H2O Innovation announced on 31 January 2011 that its Indian joint venture, H2O Innovation India Ltd, had commissioned the 7,000 m³/d membrane water treatment system it had designed for Larsen & Toubro Heavy Engineering (L&T) in Gujarat state.
NASA approves space-station wastewater reuse
In a giant leap for wastewater reuse, NASA, the US federal space agency, gave the green light on 20 May 2009 to the Expedition 19 astronauts aboard the International Space Station to drink reused wastewater from the station's new recycling system.
Pilot vapour-recompression plant tackles oil and gas water
A pilot project to treat produced water from oil and gas operations in southern Saskatchewan, Canada, has been initiated by Purestream Technology of Salt Lake City, USA, using its advanced vapour recompression (AVARA) system.
Q&A: Tim Harper, G20 Water Technologies
Former European Space Agency scientist Tim Harper, now chief executive of G2O Water Technologies, talks graphene-coated membranes
Slimline MBR is first product from LG Electronics
Only two months after announcing it was entering the water membrane business, LG Electronics (LG) unveiled its first wastewater treatment solution, a membrane bioreactor, on 25 November 2010.
Conwed in feed spacer study
Plastic netting maker, Conwed, has provided its products for a study into options for developing and testing of feed spacers in reverse osmosis (RO) by numerical modelling, three- dimensional (3D) printing of feed spacers and experimental membrane fouling simulator studies.
SEDA December workshop to look at chemicals for RO
The Southeast Desalting Association (SEDA) has announced a technology transfer workshop on Chemical Treatment for Reverse Osmosis (RO) to be held in Palm Bay, Florida, in December 2013.
Nearly 200 abstracts received for AMTA/AWWA conference
The American Membrane Technology Association (AMTA) says that 193 abstracts have been received for its joint conference next year with the American Water Works Association (AWWA) in San Antonio, Texas.
AWA to hold membrane fouling master class
Membrane fouling is to be the subject of a master class to be held by the Australian Water Association (AWA) in November 2012.
Melbourne researchers' anti fouling membrane claim
Researchers from the Melbourne School of Engineering at the University of Melbourne have developed what they claim to be an anti fouling microfiltration system that outstrips existing technology on energy efficiency with negligible compromise on performance.
Live Webinar Masterclass - Membrane Fouling Control
The first in a series of Desalination and Water Reuse Masterclass webinars will run on 12 February this year. Each event will offer practical, readily applicable guidance delivered by an expert in the topic covered.
MIT membrane start-up completes funding round
The conclusion of an initial round of funding for Clean Membranes Inc, a start-up company based in Lexington, USA, will permit progress on development of a new generation of non-fouling membranes usable for sea and brackish water desalination.
Researchers uncover new membrane fouling mechanism
Researchers have uncovered "an additional reverse osmosis (RO) membrane fouling mechanism" arising from organic compounds present in ultrafiltration (UF) permeate during wastewater desalination.
Korean membranes chosen for Iranian process water
CSM fouling-resistant reverse-osmosis membranes, manufactured by Woongjin Chemical of South Korea, have been selected for the Fajr Phase II Project in Iran to help reduce biological fouling and scaling.
SEDA to hold May Day membrane cleaning workshop
The Southeast Desalting Association is holding a workshop in Cape Coral, Florida, on 1 May 2014 focused on reverse osmosis (RO) membrane cleaning.
Jebel Ali project is a new direction for DEWA and Besix
The $237 million contract awarded by Dubai Electricity and Water Authority (DEWA) for a seawater reverse osmosis (SWRO) desalination plant represents a big step for the client, and for Besix Concessions & Assets, which won the work in partnership with Acciona Agua.
Energy Recovery: 'hyper-focused' on water
The former chief financial director of Energy Recovery has now stepped into the top job as chief executive on a permanent basis. He reveals plans to develop new packaged product for the desalination market, and takes a wry line on the industry's lively rumour mill.
Interview: Kati Bell, Stantec global reuse leader
Canadian engineering giant Stantec acquired water business MWH Global for $795 million, back in 2016. Now that the dust has settled on the deal, how well is the integration of the two organisations proceeding, and as the global water reuse practice hits its stride, how could its work help to shape the water markets of the future?
Egypt pledges $51 billion for water projects over 20 years
Egypt is stepping up efforts to address water scarcity, pledging EGP 900 billion ($51 billion) for a national water management plan over 20 years.
Keppel unveils designs for Marina East Desalination Plant
Keppel has shared design details of its Marina East Desalination Plant project in Singapore, as it broke ground on 29 June 2017.
The Long Read: The changing EPC landscape
There is a big shift going on in the water sector, and it's exemplified by the Suez-GE deal. While the focus of services offered by engineers has always ebbed and flowed along a spectrum of consultancy, design work, systems integration, and delivery, nowadays customers' decision-making processes are pushing at the boundaries of these traditional project service offerings.
"We become part of our customers' business." Anurag Bajpayee
Gradiant's philosophy on technology is to take fundamental concepts and develop them into water technologies that speak directly to customers' experiences in the field.
'Adjustable' desal plant in Brazil financed by project bond
UK water company Hydrology is to build and operate an "adjustable" desalination plant in Cubato in Sao Paulo state, Brazil, to supply industrial conglomerate Unigel.
IDA World Congress in California
A pivotal event in the global desalination and water reuse sector will be held at the US industry's epicentre amid an historic drought when the 2015 IDA World Congress on Desalination and Water Reuse convenes in San Diego, California at the end of August 2015. The "location, theme and timing could not be more appropriate," said IDA secretary general, Patricia A Burke.
Conwed joins European Desalination Society
Plastic netting manufacturer, Conwed, has joined the desalination, water reuse and water technology development trade body, the European Desalination Society (EDS).
Mitsubishi unit bags sludge system order
Mitsubishi Heavy Industries Mechatronics Systems (MHI-MS), has picked up an order for wastewater treatment facilities using its two-phase, activated sludge system, for installation at sister company Mitsubishi Chemical Corporation's Yokkaichi Plant in Mie prefecture.
Evoqua to double production capacity at US plant
Evoqua Water Technologies is to double its capacity to produce its range of water treatment products at one of its main production facilities in the US.
Texas city advances on reuse
The Texas, USA city of Weatherford is progressing with plans to reuse treated wastewater, which would save the city significant sums of money according to the Weatherford utility board.
Xylem supplies wastewater denitrification systems in China
Water technology company, Xylem, has supplied denitrification systems to three wastewater treatment plants in eastern China as part of a national strategy to improve wastewater treatment by 90% over five years.
Osmoflo wins US$ 15m wastewater reuse contract
Water and wastewater firm, Osmoflo, has won a US$ 15 million contract for the design,
construction and commissioning of a wastewater treatment plant in northern Western
Australia to produce reclaimed water for use in irrigation.
IDA accepting bids to stage 2017 World Congress
The International Desalination Association will be accepting formal bids to host its 2017 World Congress from 20 April 2014.
Randy Truby joins board of Neo-Tech Aqua Solutions
Ultraviolet (UV) disinfection specialist NeoTech Aqua Solutions Inc announced on 10 March 2014 the addition of Randy Truby, a past president of the International Desalination Association, to its board of directors.
FEDCO moves to new Dubai sales and service center
Fluid Equipment Development Company (FEDCO) has relocated its Dubai sales and service office to a new facility during November.
World's largest SWRO desalination plant operational
The world's largest seawater reverse-osmosis plant, the 624,000 m³/d Sorek plant in Israel, is now fully operational.
Ovivo to supply largest US MBR to Canton, Ohio
The City of Canton, Ohio, is to use Ovivo membrane bioreactor (MBR) technology to upgrade its water reclamation facility from 39 MGD (147,600 m³/d) to 88 MGD (333,000 m³/d).
IDA publishes new World Congress information
The International Desalination Association (IDA) has issued its Second Announcement for its World Congress 2013 on Desalination & Water Reuse which will take place in Tianjin, China, during 20-25 October 2013.
Aquaporin eyes commercial membrane sales in 2013
Danish membrane treatment startup Aquaporin A/S is preparing for commercial sales of its Aquaporin Inside membranes by the end of 2013.
Details released for September SWMOA courses
Details have been released by the Southwest Membrane Operator Association (SWMOA) for its two California membrane-plant operator training courses in September 2012.
Florida RO chemical pretreatment workshop for SEDA
A technology-transfer workshop on Chemical Pretreatment for Reverse Osmosis Technology is to be held in Dunedin, Florida, by the Southeast Desalting Association (SEDA).
IDA Congress exhibition floorplan available online
The International Desalination Association (IDA) has made the exhibition floorplan and online exhibitor application for the IDA World Congress 2013 available online.
IDA World Congress exhibition booking open online
The International Desalination Association (IDA) announced on 11 June 2012 that the IDA World Congress 2013 exhibition application form and floor plan is now online.
AMTA workshop to look at SCADA and PLCs
The American Membrane Technology Association (AMTA) is to hold a technology transfer workshop on SCADA/Instrumentation & Controls for Membrane Facilities in Fairfax, Virginia, on 17‑18 July 2012.
MECO wins US Navy desalination contracts
Louisiana-based MECO has been awarded the design and development of advanced shipboard desalination units for the US Navy under contracts with the Office of Naval Research.
New San Francisco wastewater reuse project relocated
San Francisco's Westside Recycled Water Project, which will reuse up to 4 MGD (15,140 m³/d) of secondary effluent, will no longer be built in the city's historic Golden Gate Park.
Four SEDA events posted for 2012
The Southeast Desalting Association has posted four events on its website for 2012, including its Spring Symposium in Bonita Springs, Florida, and a workshop in North Carolina.
Split-flow process highlight of Brightwater MBR wastewater reuse plant
Brightwater, the newest regional wastewater treatment facility owned and operated by the King County Wastewater Treatment Division in the US Pacific Northwest was officially dedicated on 24 September 2011. It features a 36 MGD (136,000 m /d) membrane bioreactor (MBR) used to capacity in a split-flow process which copes with peak hourly flows of up to 130 MGD (492,000 m /d). Without this split flow, the cost of the MBR would be prohibitive. The plant also produces biosolids for compost and agricultural use, and uses digester gas for process and space heating. This article first appeared in the November/December 2011 issue of Desalination & Water Reuse magazine.
Desalination "too expensive" as Pacific island solution
A UN aid coordinator for the Pacific region said on 2 November 2011 that desalination was probably not a future solution for drought prevention in island groups like Tuvalu and Tokelau.
NASA, space flight, water recycling and forward osmosis
For manned space vehicles and especially for the International Space Station, America's National Aeronautics & Space Administration (NASA) has had to invent and adapt many technologies. Not least among these are those aimed at life support and water supply in particular. In developing these, forward osmosis (FO) is playing a prominent part. NASA Research in FO has demonstrated that it has both spacecraft and terrestrial applications. The terrestrial applications are just now becoming a reality. This article first appeared in the August/September 2011 issue of Desalination & Water Reuse magazine.
Argentine spacecraft to map ocean salinity
An Argentine-built spacecraft is set to blast off on 10 June 2011 from Vandenburg Air Force Base in California carrying instrumentation to measure the saltiness of the world's oceans.
Fourth session track added to IDA World Congress
The International Desalination Association (IDA) has added a fourth track to the technical program for its World Congress on Desalination and Water Reuse in Perth, Australia, on 4-9 September 2011.
Reuse plant eases Melbourne's water demand
The Aus$ 48 million (US$ 52.6 million) recycled water plant in Altona, Australia, was commissioned on 19 April 2011 by Victoria state's minister for water, Peter Walsh.
Aquatech to build SBR/UF/RO reuse plant for Mumbai airport
A complete turnkey engineering, procurement and construction contract for a 10,000 m³/d waste and sewage treatment and recycle project for the Chhatrapati Shivaji International Airport at Mumbai, India, has been awarded to Aquatech. Aquatech will also subsequently operate and maintain the facility.
Branson to address IDA Perth congress in September
Sir Richard Branson, famous for his achievements as an entrepreneur and founder of the international brand Virgin, is to be keynote speaker at the World Congress of the International Desalination Association in Perth.
Siemens to supply 88,000m³/d UF pretreatment for Scottsdale
Siemens Water Technologies announced on 14 December 2010 a US$ 7 million contract to supply 11 Memcor CP membrane filtration systems for the City of Scottsdale Water Campus Advanced Water Treatment (AWT) Facility expansion in Arizona, USA.
New Indian partnership for inge watertechnologies
Germany-based ultrafiltration manufacturer inge watertechnologies AG is expanding its presence in the Indian subcontinent through a sales and distribution partnership with CN Tech Engineers (CNTE).
SEDA spring symposium brochure available
Back To The Basics will be the theme for the Spring Symposium of the Southeast Desalting Association (SEDA) which will be held in Captiva, Florida, on 13-16 June 2010.
Siemens wins OC membrane system contract
A hollow-fiber membrane pretreatment system is to be supplied to Orange County's Groundwater Replenishment (GWR) system expansion under a US$ 14 million contract won by Siemens in California, USA.
Aquatech prepares membrane-thermal ZLD for Columbia gold mine
The new hybrid membrane-thermal system is to be installed in April and commissioning is expected to be completed by Q4 2019.
UK seawater desalination may become necessary, says IMechE report
Seawater desalination may become necessary in the United Kingdom if precipitation does not provide sufficient water, according to a report Climate change: adapting to the inevitable published in February 2009 by the UK Institution of Mechanical Engineers.
Pratt & Witney to validate PEI equipment
US space and aero engine-builder Pratt & Whitney Rocketdyne Inc (PWR) is to provide engineering and development services for Pump Engineering Inc (PEI), manufacturer of desalination pumping and energy-recovery equipment.
Gold Coast's twin intake/outfall tunnels save space and environment
A key part of the anti-drought strategy in Queensland, Australia, has been the construction of a 125,000 m³/d seawater reverse-osmosis desalination plant, located at Tugun on the Gold Coast, due to start producing water in November 2008. This plant will supply up to 20% of the average demand for the Brisbane/Gold Coast Region. The Gold Coast Desalination Project is an excellent example of the delivery of a complex project in a very fast timeframe through the use of innovation and teamwork. The blueprint for this outcome was set very early in the project by the adoption of an alliance-style contract for the project. The plant also features twin segmentally lined intake and outfall tunnels, each 2.8 m internal diameter. The tunnels extend approximately 1.5 km offshore, into 20 m water depth. This article appeared in D&WR magazine's August/September 2008 issue.
GE expands HERO licensing agreement
GE Power & Water announced on 1 February 2011 that it has completed a new expanded licensing agreement to allow it to continue offering High Efficiency Reverse Osmosis (HERO) systems to help more of its industrial customers increase their water usage efficiency and reuse capacity.
ZLD wastewater pilot makes first water in Beijing
A pilot NanoClear zero-discharge wastewater treatment plant in Beijing has just produced its first water, according to developer Dais Analytic Corporation.
Video Q&A: Ronit Erlitzki, AdEdge Water Technologies
AdEdge Water Technologies' director of business development Ronit Erlitzki, presents a new technology that uses flow reversal to minimise membrane fouling.
Desalitech wins zero liquid deal in China
Desalitech has won a deal to supply a high-efficiency, ultrapure water treatment system for Novelis' aluminium production facility in Changzhou, China to help comply with a regulatory requirement for zero-liquid discharge (ZLD) in applicable process wastewaters.
EDS posts desalination courses for early 2011
The European Desalination Society has posted a half-year series of courses on its website for 2011 related to water desalination and membrane technology. All the courses will take place in Pegli, close to Genoa, Italy, at the Hotel Mediterranée.
MSF/FBE seawater desalination and fouling hypersaline wastewater treatment
The Multi-Stage Flash/Fluidised Bed Evaporator (MSF/FBE) is not strictly a new technology, but the applications suggested in this article are new. It is claimed to halve the costs of distillate production compared with most advanced conventional MSFs and is suggested as a way to expand existing MSF plants. Another application is the wind-powered MSF/FBE for distillate production at remote underdeveloped locations. This article also introduces a Vapour Compression/Fluidised Bed Evaporator (VC/FBE) for the treatment and concentration of saline and severely fouling industrial and mining (waste)water streams. This article first appeared in the August/September 2010 issue of Desalination & Water Reuse magazine.
4th Membranes & Desalination event set for Gold Coast
The Membranes and Desalination Specialty IV Conference, to be held in Gold Coast on 11-12 February 2011 by the Australian Water Association, has a problem solving focus.
Dow project seeks to promote reuse
Dow Water & Process Solutions, is participating in one of ten European Commission-funded projects that aim to stimulate innovation and improve cohesion in Europe's water reuse sector.
Pretreatment course scheduled by EDS for May 2010
The European Desalination Society (EDS) on 15 January 2010 announced a four-day course on Pretreatment, membrane fouling and scaling to be held in Genoa, Italy, on 31 May - 3 June 2010.
Veolia and NanoH2O hook up to test new membranes
Veolia Water Solutions & Technologies and NanoH2O announced a five-year partnership on 10 November 2009 at the International Desalination Association's World Congress in Dubai.
IDA releases more Congress details
More details have been released about the program for the 2009 World Congress of the International Desalination Association (IDA), which will take place during 7-12 November 2009 in Dubai.
Three desalination workshops follow IDA World Congress
Three different aspects of desalination will be covered in workshops announced on 10 September 2009 by the International Desalination Association (IDA), which will follow its upcoming World Congress in Dubai.
Furukawa and Glater enter AMTA Hall of Fame
Two very popular admissions to the American Membrane Technology's Hall of Fame were announced at the association's 2009 conference and exhibition in Austin, Texas, on 15 July 2009.
Toray to set up desalination/reuse R&D lab in Singapore
The establishment of Toray Water Technology Laboratory (TWTL) in Singapore to conduct research and development of water treatment technologies was announced by Toray Industries Inc on 24 June 2009. The Nanyang Environment & Water Research Institute (NEWRI) at Nanyang Technological University (NTU) will be Toray's partner for its research activities in Singapore.
Large EDR river desalination plant opens in Spain
GE Water and Aigües Ter-Llobregat (ATLL) of Spain announced on 19 May 2009 the opening of the 220,000 m³/d electrodialysis reversal (EDR) brackish water desalination plant on the Llobregat river.
Desalination course just misses quake
Earth tremors felt during the European Desalination Society's fouling and scaling course in L'Aquila, Italy, last week, were obviously precursors of the major earthquake that struck the town at 03:30 on 6 April causing over 190 deaths.
AdVE desalination pilot plant approved for Laredo
A 50,000 gpd (190,000 L/d) advanced vapor compression desalination (AdVE) pilot plant is to be constructed and operated for the City of Laredo, Texas. The City Council has approved a US$ 1.6 million joint proposal by Terrabon LLC and the Texas Engineering Experiment Station (TEES).
Pilot tests for dopamine anti-fouling technology
Seed capital totalling US$ 500,000 for the development of a dopamine-based membrane anti-fouling technology has been raised by Advanced Hydro Inc (AIC), based in Austin, Texas, USA, the company announced on 6 January 2009.
First MOT plant produces water in Gibraltar
The first desalination plant to employ Manipulated Osmotic Technology (MOT) has produced its first water in Gibraltar. Modern Water, the UK company that installed the plant, also announced on 15 September that it has an agreement to install another MOT plant in Oman.
Combining Forward Osmosis with Reverse Osmosis
A combination of forward osmosis with reverse osmosis could facilitate the treatment of some high fouling wastewaters. The system uses brine to draw water from the wastewater without high pressure or turbulence. Key element is the membrane's ability to allow rapid passage of water without much internal concentration polarization. The diluted draw solution can then be desalinated by reverse osmosis. The Two-Way Osmosis or TWO system may also be usable in very remote areas, where seawater ponds can be built for evaporative recovery of salt. Catalyx is designing a pilot system (patent pending) to desalinate seawater without external electric power. This article was published in the May/June 2009 issue of Desalination & Water Reuse.
Desalination using forward osmosis with nanofiltration membranes
Forward osmosis (FO) is an emerging membrane technology, often used for desalination. Like reverse osmosis (RO), FO uses a semi-permeable membrane to separate water from dissolved solutes. The semi-permeable membrane acts as a barrier that allows water to pass through while blocking salts. Generally, any dense, non-porous, selectively permeable material can be used as a membrane for FO. Professor Chung invented a novel polybenzimidazole (PBI) nanofiltration (NF) membrane with a narrow pore size and high flux for the FO process. PBI was chosen mainly because of its robust mechanical strength and excellent chemical stability. However, at high ionic strength (normal in FO applications) and normal operational pH values, the charge of the membrane surface is neutral, leading to a decrease in electrostatic repulsion between the membrane surface and electrolytes to be rejected. Consequently, monovalent salts rejection decreases. Ideal NF membranes for FO would be highly negatively charged at most pH values. Additionally, these membranes are hydrophobic and have a propensity to foul during operation. Therefore, this collaboration is performing research to improve the separation performance of the PBI FO membrane by (1) lowering membrane fouling via chemical modification, and (2) increasing its monovalent salt-rejection via membrane surface modifications. Since these properties are given to a porous PBI NF membrane instead of the conventionally used dense RO membranes, this project has the potential to revolutionize the field of desalination using FO. Development of a desalination process technology using the FO route has the potential to achieve up to a 75% decrease in costs and energy consumption in desalination, in comparison with conventional thermal or RO processes. This technology is still undergoing research. Acknowledgments The source of funding was the National Science Foundation, NSF OISE 0832894. This article appeared in D&WR magazine's May/June 2009 issue.
MBR upgrades mean less maintenance and longer life
In recent years, MBR membranes have evolved to the point where they require less maintenance and at the same time have a longer useful life. An added benefit comes from the more advanced designs that consume significantly less energy and lower operating costs. The new Puron module from Koch Membrane Systems Inc (KMS) is a second generation MBR membrane module that employs hollow fibers. Like several other second generation membranes, the high-strength fibers that comprise the Puron modules also overcome the fiber breakage problems typical of first generation systems that use non-braided fibers. Second generation systems position the membrane bioreactor industry for even more rapid growth. They offer several advantages, including improved performance in terms of reduced fouling and lower energy consumption. They are also more robust than first generation systems and are usually designed with compatibility in mind to minimize retrofitting costs. This article appeared in D&WR magazine's August/September 2008 issue.
Antiscalant removes need for acid in wastewater RO
Field trials of a new scale-inhibiting chemical for use with reverse-osmosis membranes in wastewater reuse plants show that, at a low dose rate, it can increase the solubility of calcium phosphate by over one hundred times, obviating the need for using dangerous and costly acid. Current design practices for large effluent reuse projects are focused on a combination of removing phosphate by precipitation prior to the RO plant and acid dosing to reduce pH to 6.0 and hence increase calcium phosphate solubility to prevent fouling. Conventional antiscalants are ineffective at high phosphate and high recovery rates, and the only other option has been to dose large quantities of acid to reduce feed pH to below 6.2. Reducing the pH from 7.5 to 6.0 on a 2,700 m /day plant would require 0.5 to 1 ton of 95% sulphuric acid per day. Handling this quantity of acid is an environmental, health, safety and logistical problem that many plant operators would like to move away from. The results from the field trials show that using a highly active threshold inhibiting antiscalant such as Genesys PHO at a low dose rate of 2 -5 mg/L can increase the solubility of calcium phosphate by over one hundred times. This article appeared in D&WR magazine's August/September 2008 issue.
H₂O Innovation bags Clearlogx
Membrane filtration company, H₂O Innovation, as acquired all of the assets of control technology specialist, Clearlogx, that relate to its control technology and its specialty coagulants.
IDA 2015 World Congress draws 1,700 delegates
More than 1,700 delegates from 63 countries attended the International Desalination Association's (IDA's) 2015 World Congress held in San Diego recently according to the association's key metrics published this week. Awards for papers and presentations topped US$ 30,000.
Masterclass webinar to look at combining reuse and desalination using forward osmosis
Award-winning researcher, Gaetan Bandin, will present the next Desalination and Water Reuse Masterclass Webinar on 30 June looking at opportunities and challenges for forward osmosis and pressure assisted osmosis (PAO) to combine water reuse and desalination.
Singapore's PUB draws curtain on algae
Singapore's national water agency PUB has for the first time installed silt curtains at the waters off Tuaspring and Singspring desalination plants, to protect them from damaging fouling of their reverse osmosis membranes by mounting levels of algae in the water.
Video Q&A: Doug Eisberg, Avista Technologies
Avista Technologies' director of business development Doug Eisberg, explains how new applications of membranes in water reuse systems are bringing fresh challenges.
A grand conference is AMTA/ AWWA's fourth
One thousand attendees turned up at Orlando, Florida for the fourth Membrane Technology Conference (MTC) hosted jointly by the American Water Works Association (AWWA) and American Membrane Technology Association (AMTA) last week.
AMTA NEWS Novel sub-nanofiltration ceramic membrane production uses DNA
A novel method for creating ceramic reverse osmosis membranes with sub-nanometre pores by using the genetic material, DNA, as a template former, overcomes the poor reproducibility encountered in conventional methods according to the developer of the technology, Cerahelix.
Microbubble membrane cleaning stems fouling
In spring 2014 we published an article on how Genesys developed its microbubble-based membrane cleaning system. In this follow up Genesys presents results from a case study of the technology in a wastewater reverse osmosis plant. This article first appeared in the February 2015 issue of Desalination & Water Reuse magazine.
Kuwait plant to get GE membranes
Kuwait's Sulaibiya wastewater treatment and reclamation plant will be upgraded with GE's water reuse technology.
AMTA unveils annual gongs for membrane experts
The American Membrane Technology Association (AMTA) has conferred its annual roster of awards for membrane specialists, include its Lifetime Service Award, Hall of Fame Awards, and Operator of the Year Award.
Membrane market growth to run until 2020
The fruits of growing research and development in forward osmosis for desalination are highlighted in a recent sector report as drivers of growth in the market for membrane separation technologies running to at least 2020.
First guide to harmful algal blooms launches at IDA World Congress 2017
UNESCO Intergovernmental Oceanographic Commission (IOC) and Middle East Desalination Research Centre (MEDRC) introduced the world's first guide to harmful algal blooms (HABs) on Tuesday 17 October 2017, at IDA World Congress.
Researchers share industry prize for fouling research
Doctoral students, Ariel Atkinson of the University of North Carolina at Chapel Hill and Erin Partlan of Clemson University, have received the 2014 Fellowship for Membrane Technology award from the American Membrane Technology Association (AMTA) and the National Water Research Institute (NWRI) for research in membrane fouling.
Nine desalination studies bag US$ 1.4 million funding
Nine research projects and pilot studies will share US$1.4 million in funding under a desalination and water purification research programme set up by the US Bureau of Reclamation.
Researchers cast doubt on economics of osmotic power
New research findings have questioned the economics of power production from pressure retarded osmosis (PRO).
Why MFI is edging SDI as a fouling index
PARTICULATE FOULING has plagued reverse osmosis (RO) systems since their first use in desalination and remains a persistent issue today for RO and other pressure-driven systems such as microfiltration (MF), ultrafiltration (UF) and nanofiltration (NF). In the early 1960s, the Du Pont company/Permasep Product successfully launched the hollow-fine-fibre (HFF) permeator onto the desalination market, where it dominated for several decades. A well-known weakness of this permeator was its vulnerability to fouling. Initially, this vulnerability was attributed to suspended and colloidal matter in the feed water, ie, particulate fouling. Therefore, Du Pont developed, the Silt Density Index (SDI), initially named the Fouling Index, as a parameter to characterize the fouling potential of the feedwater for permeators. The fouling mechanism turned out to be more complicated than just fouling of the membrane surface as initially assumed. Gradually it became clear that the fouling was initiated by local clogging of the woven or non-woven fabric between the fibres, which is needed to ensure equal flow distribution of the feed water (see Figure 1). This article first appeared in the issue of Desalination & Water Reuse magazine.