Nanofiltration, Spiral Wound
Pedal-powered nanofiltration kits sent to Haiti
Researchers from the Department of Environmental Science & Engineering at South Korea's Gwangju Institute of Science & Technology (GIST) sent several human-powered nanofiltration (NF) water- treatment systems to the earthquake victims of Haiti in January.
Liberatore becomes GE's main membrane man
Frederick Liberatore, who has been leading GE's process membrane business for the past two years, has been given an expanded role as commercial domain leader for spiral-wound and flat-sheet membranes - water and process technologies.
India's BARC develops small solar RO and UF units
Domestic and community-level reverse-osmosis (RO) desalination units have been developed for producing safe drinking water by Saly T Panicker at the Desalination Division of India's Bhabha Atomic Research Centre.
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.
Aquarion acquires Germany's MFT
Swiss oil and gas industry water systems company, Aquarion Group, has acquired Membran- Filtrations-Technik (MFT) of Germany for an undisclosed sum.
Woongjin America changes name to TCK Membrane America
Woongjin Chemical America Inc, which makes both spiral-wound and hollow-fibre desalination and water treatment membranes, has changed its name to TCK Membrane America Inc.
FCC Aqualia bags Chile deals
Water management company FCC Aqualia, has won two water supply and purification contracts in Chile's mining and petrochemical industries worth a total of € 27 million (US$ 30.7 million).
AMTA/AWWA 2015 membrane conference abstracts invited
The American Membrane Technology Association (AMTA) and the American Water Works Association have issued a call for papers for their fourth joint Membrane Technology Conference to be held in Florida in 2015.
SEDA to hold workshop on pretreatment for RO/NF
The Southeast Desalting Association is holding a workshop on 12 February 2014 at the Town of Jupiter Water Treatment Plant in Florida on Pretreatment for Reverse Osmosis (RO) and Nanofiltration (NF).
EDS announces membrane course in Rome in 2014
The European Desalination Society has announced a three-day intensive course on Membrane Technology, Process & System Design to take place in Italy next March.
APTwater buys remaining Sepro shares from Sojitz
California-based APTwater Rochem® has acquired the remaining shares of Sepro Membranes from its previous joint-venture partner Sojitz Corporation of Tokyo, Japan.
AMTA/NWMOA Utah workshop program published
The American Membrane Technology Association (AMTA) has published the program for its joint technology transfer workshop with the Northwest Membrane Operator Association (NWMOA) in December.
Escobar appointed as editor-in-chief of IDA journal
Dr Isabel Escobar of the University of Toledo, Ohio, USA, has been appointed by the International Desalination Association (IDA) to succeed Dr Jim Birkett as editor-in-chief of the IDA Journal of Desalination & Water Reuse.
EDS holding membrane training week in L'Aquila
The European Desalination Society is holding a membrane training week in L'Aquila, Italy, on 30 September - 4 October 2013 presenting two back-to-back seminars by David Paul.
Can$ 4.7 million new orders for H2O Innovation
A 1.1 MGD (4,200 m³/d) ultrafiltration (UF) drinking water system for a community in British Columbia, Canada, is one of new contracts worth Can$ 4.7 million (US$ 4.6 million) announced on 6 June 2013 by H2O Innovation Inc.
Canadian municipalities buy nanofiltration systems
Nanofiltration drinking water production systems are to be supplied to two Canadian municipalities, Waterville and Eastman in Quebec, by H2O Innovation.
EDS publishes details of membrane design course
The European Desalination Society (EDS) has published details of its first event in 2013, a three-day intensive course on Membrane Technology Process & System Design.
H2O Innovation takes Californian reuse contract
A contract to expand the Leo J Vander Lans Advanced Water Treatment Facility in Long Beach, California, has been awarded to Canadian company H2O Innovation Inc.
Two workshops ahead for SEDA in January
The Southeast Desalting Association (SEDA) is holding two technology transfer workshops in Florida at the end of January 2013.
Proposals sought for membrane-integrity test method
The WateReuse Research Foundation has issued a Request for Proposals to create a method for testing the integrity of high-pressure membranes used for nanofiltration (NF) and reverse osmosis (RO) in water treatment and desalination.
H2O Innovation supplies US city with UF, NF and RO
The City of Delaware in Ohio, USA, has awarded a contract to Canada's H2O Innovation Inc for a drinking-water production system involving ultrafiltration (UF), nanofiltration (NF) and reverse osmosis (RO).
SWMOA seeks papers for 2013 San Diego symposium
The Southwest Membrane Operator Association (SWMOA) has made a call for papers for its 2013 Annual Symposium in San Diego, California, on 22-24 April 2013.
H2O Innovation wins Canadian and US contracts
A 5,000 m³/d nanofiltration water treatment plant is to be provided for the city of Saint-Tite, Quebec, Canada, by H2O Innovation Inc.
Buenos Aires membrane papers deadline 15 June
A deadline of 15 June 2012 has been set for papers for the International Water Association (IWA) 3rd Regional Conference on Membrane Technology.
AMTA/WEF workshop set for Seattle in May
The American Membrane Technology Association (AMTA) has announced that it will be holding a Technology Transfer Workshop in Seattle, Oregon, in May in cooperation with the Water Environment Federation (WEF).
EDS adds SDI Workshop to Barcelona events
The European Desalination Society has added a workshop on the Silt Density Index to the satellite events around its upcoming Barcelona conference, the society confirmed in an announcement on 12 March 2012.
Oil/gas sector MBR leads new H2O Innovation jobs
Supply of a membrane bioreactor (MBR) wastewater treatment and reuse system to an industrial user in the oil and gas industry in Alberta, Canada, was announced by H2 O Innovation Inc on 8 March 2012.
Jack August to give AWWA/AMTA keynote speech
Dr Jack L August Jr, historian and executive director of the Barry Goldwater Center for the Southwest and visiting scholar in legal history at Snell & Wilmer LLP will be keynote speaker at the AWWA/AMTA Membrane Technology Conference & Exposition, which opens in Pheonix, Arizona, next week.
VSEP NF system used at Brazilian ethanol plant
A full-scale vibratory shear enhanced process (VSEP) membrane separation system has been commissioned successfully by New Logic Research at a Brazilian ethanol plant.
New contracts end H2O Innovation's year strongly
Canada's H2O Innovation Inc is to supply membrane nanofiltration (NF) water supply systems to two municipalities in Canada and expand an existing system in a third, among contracts totaling Can$ 8 million (US$ 8.25 million) announced on 6 July 2011.
Tri-Tech to expand large UF/NF plant in China
The City of Ordos in China is to build what will be the largest water treatment plant in the world using ultrafiltration (UF) and nanofiltration (NF) when it expands its existing plant to 148,000 m³/d.
Woongjin opens all-Americas headquarters and factory
A new American headquarters and membrane manufacturing facility was opened on 5 April 2011 in Anaheim, California, by Woongjin Chemical America Inc, manufacturer of CSM reverse-osmosis and nanofiltration membranes for desalination and water treatment.
Sinochem setting up seawater desalination industrial base
Sinochem Corp held a ground-breaking ceremony for a seawater desalination industrial base in Hangzhou, China, on 22 March 2011, coinciding with World Water Day
Pentair to buy CPT division from Norit
Pentair Inc is to acquire the Netherlands-based Clean Process Technologies (CPT) division of Norit Holding BV in the second quarter of this year for € 503 million (US$ 705 million), plus net debt at closing.
Ceramic filters bought for Saudi RO pretreatment
German start-up company ItN Nanovation AG, which makes nanofiltration ceramic products for the water industry, announced on 15 March 2011 an order in Saudi Arabia for its CFM Systems® nanoceramic-based filtration system for water purification.
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.
AMTA webinar to look at Florida nanofiltration plant
The American Membrane Technology Association's next webinar on 28 October 2010 will look at the split-feed nanofiltration plant in Jupiter, Florida.
World's largest membrane leachate-treatment plant handed over
Norit X-Flow and ISTAÇ (Istanbul Metropolitan Municipality Environmental Protection & Waste Materials Valuation Industry) celebrated the handover on 17 August 2010 of a notable wastewater treatment project: the treatment of leachate from the Istanbul landfill in Odayeri and Kömürcüoda.
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.
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.
Dow gets NF start in Saudi Arabia at Ha'il
The Dow Chemical Company has been chosen to supply water nanofiltration technology to the Ha'il nanofiltration (NF) plant by the Ministry of Water & Electricity in Saudi Arabia.
EDS announces new desalination course
The European Desalination Society is to hold a course on Membrane Technology, Process and System Design in Genoa, Italy, on 3-5 March 2010.
Nanoparticles for water and desalination - how safe are they?
The potential dangers from the use of engineered nanoparticles, such as nanotubes, metal oxides or nanodots, some of which form the basis of new solutions for desalination and water treatment, are outlined in a new European Union publication.
Nine desalination studies bag US$ 1.4 million funding
Nine research projects and pilot studies will share US$1.4 million in funding under a desalination and water purification research programme set up by the US Bureau of Reclamation.
Desalination drives nanofiltration market growth
Desalination is one of the primary forces behind nearly three quarters of a 15% growth forecast in the nanofiltration (NF) market worldwide that will take it above US$ 445 million by 2019 according to market researcher BCC Research.
Hydranautics introduces two new spiral wound RO membranes
Hydranautics has brought out two new spiral wound reverse osmosis membranes for demanding industrial and municipal applications.
Innovative feed spacer technology leads to enhanced reverse osmosis element performance
Innovations in feed spacer technology can enhance the performance of reverse osmosis (RO) technologies, write Dr Carsten Schellenberg and Alan D Sharpe of Conwed Plastics and LAXNESS.
H2O Innovation commissions its biggest ultrafiltration project
H2O Innovation has commissioned a 45,400 m³/d ultrafiltration (UF) project for the Clifton Water District, Colorado under a design and build project - its largest to date.
Chilton joins Toray Membrane in Europe
Mark Chilton has joined Tory Membrane Europe as European specialty products manager effective 1 January 2013.
Toray expands California membrane manufacturing site
Desalination membrane manufacturer Toray Membrane USA Inc has bought a third building located adjacent to its existing two-building manufacturing facility in Poway, California, USA.
Fluence introduces Aspiral, new modular MABR system
Fluence has introduced a new, modular Membrane Aerated Biofilm Reactor (MABR) system that it claims can reduce aeration energy consumption by up to 90 per cent compared to conventional technology.
Truby to direct NanoH2O's global sales
Membrane veteran Randy Truby, who formerly looked after global marketing and sales at Toray Membrane USA, has joined NanoH2O Inc as director of global sales.
"We're now at more than $100 million revenue." Doug Brown, AquaVenture chairman and CEO
AquaVenture chief executive Doug Brown has a track record of delivering shareholder value. When he joined water technology and engineering firm Ionics as chief executive in 2003, the struggling business was trading at $16 a share.
Leveraging nanotechnology for next generation seawater desalination
NanoH2O advanced membranes for reverse osmosis (RO) desalination represent a new material that enhances current polymer-based membranes with the benefits of nanotechnology. These nanocomposite RO membranes represent a step-change in productivity through improved permeability while maintaining requisite salt and contaminant rejection. Since the original publication of this concept, further development and optimization of this membrane technology for seawater reverse osmosis (SWRO) has resulted in an enhanced flux of more than double that of a 22.7 m /d (6,000 gpd) commercial baseline with 99.7% salt rejection. Recent seawater field testing of an industry-standard spiral-wound element module including the TFN material combined with a fabric support base topped with a microporous polysulfone layer has supported current laboratory research findings. This article appeared in the May/June issue of Desalination & Water Reuse magazine
IDA launches reverse-osmosis certification program
The International Desalination Association (IDA) is to launch a reverse‑osmosis training certificate associated with its recently launched IDA Desalination Academy.
Water Planet joins forces with Applied Membranes
Water treatment technology firm, Water Planet, and reverse osmosis (RO) systems specialist, Applied Membranes, have formed a strategic alliance to market, sell and service nanofiltration and reverse osmosis based water treatment systems.
Mann+Hummel buys into membrane-maker Microdyn-Nadir
Industrial filtration group Mann+Hummel announced on 8 May 2014 that it had taken a 50% stake of the German‑based company Microdyn‑Nadir.
H2O Innovation wins North American contracts worth US$ 3.6 million
H2O Innovation has bagged four new contracts worth a total of US$ 3.6 million with two each in the US and Canada. These new deals, the company reported, will maintain its sales backlog for water treatment projects at US$ 38.6 million excluding its Professional Water Technologies, Piedmont and H2O Innovation Maple businesses.
USEPA chief briefs Senate on dangerous contaminants
Perchlorate, chromium-6 and volatile organic compounds (VOCs) in drinking water were all discussed by the US Environmental Protection Agency's administrator, Lisa P Jackson, in testimony before the Senate Committee on Environment & Public Works on 2 February 2011.
UK water nano group to be launched at February workshop
The programme has been announced for a UK nanotechnology for water event to be held at University College London (UCL) on 15 February 2011, which will provide an official launch for the EcoNano Focus Group.
Ceramic nanofiltration company gets big investor
ItN Nanovation AG, a start-up company in Saarbrucken, Germany, making nanofiltration ceramic products for the water industry, announced on 9 December 2010 a framework investment agreement with the US investment fund YA Global Master SPV Ltd, part of the Yorkville Group.
GE Water and Halvorsen TEC secure offshore sulphate removal deal
GE Water has secured the first order of its seawater sulphate removal technology for the offshore oil and gas industry from Norway's Statoil.
HTI deal takes forward osmosis to China
The world's only commercial manufacturer of forward-osmosis (FO) membranes, modules and systems, Hydration Technologies Innovations LLC (HTI), reached an international distribution, services and cooperation agreement for FO technology with Chinese company Tri-Tech Holding Inc.
Swiss venue for IWA conference on nanotech in water
The International Water Association has announced a conference on nanotechnology in the water sector to take place in Switzerland on 15‑18 May 2011.
SWMOA looking for Annual Symposium presenters
The Southwest Membrane Operator Association (SWMOA) is looking for presenters for its 2014 Annual Symposium to be held in Santa Rosa, CA in May.
Brazilian offshore SRP system awarded to VWS Westgarth
VWS Westgarth has been awarded a multi-million dollar contract by SBM Atlantia for of a seawater sulphate-reduction package (SRP), using Dow FilmTec membranes, in a Brazilian offshore oil and gas field.
EDS publishes dates for 2013 courses
The European Desalination Society has published dates for two courses in the first half of 2013.
Papers called for AMTA-SEDA joint conference in Miami
A call has been issued for papers for the joint 2011 American Membrane Technology Association (AMTA) annual conference and exposition with the Southeast Desalting Association (SEDA).
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.
New Mexico BWRO seeking waste revenue stream
Processing residual wastes from a proposed brackish-groundwater desalination plant in New Mexico, USA, could provide a revenue of around US$ 4.6 million/year, according to a preliminary engineer report just completed.
Hyflux and NEWRI to collaborate on biomimetric membranes
Water treatment specialist Hyflux has signed a memorandum of understanding with Nanyang Environment and Water Research Institute (NEWRI) to collaborate on commercialising advanced membrane technologies, particularly aquaporin-based biomimetic membranes, and nanofiltration applications.
Time to upgrade Carlsbad SWRO design to NF-SWRO Hybrid ?
The Carlsbad seawater reverse-osmosis (SWRO) desalination plant in California has been endeavoring to get started for more than a decade. During this wait, which now looks as if it could end this summer, has technology passed it by? Engineering proposals are now being invited for the similar plant at nearby Huntington Beach. The author puts forward a novel proposal that San Diego County would get a better deal from Carlsbad with the upgraded performance of a nanofiltration-SWRO hybrid with the reject treated using multi-effect distillation (MED). This RO/MED hybrid idea is under development by several groups, including Saline Water Conversion Corporation, Leading Edge Technologies, Sasakura and Water Reuse Promotion Center. The merits of the idea for Carlsbad or Huntington Beach would require evaluation of availability of steam for the MED process. This article first appeared in the May/June 2012 issue of Desalination & Water Reuse magazine.
Toray acquires TCK
Toray Industries' US membrane arm has bought TCK Membrane America - a manufacturer of reverse osmosis /nanofiltration (RO/NF) membranes in Anaheim, California.
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.
H20 wins UF and RO contracts in Canada and US
A contract to augment the capacity of the existing reverse osmosis system of the City of Las Animas, Colorado, is one of a number of recent contracts won by H2O Innovation Inc totalling Can$ 2.7 million (US$ 2.4 million).
Desalination and reuse in California/New Mexico get funding
US Secretary of the Interior Ken Salazar announced on 1 July 2009 27 water reclamation and reuse projects in California and New Mexico identified by the Bureau of Reclamation to share in a total of US$ 134.3 million under the American Recovery & Reinvestment Act of 2009.
Jason Deal to represent PWT in south-west USA
Membrane filtration specialist Professional Water Technologies (PWT) announced on 30 July 2013 the appointment of Jason Deal as regional sales manager, based in Florida.
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.
Large Diameter RO Desalination Elements
In recent years, increasing the diameter of spiral elements has been studied as a method of lowering the cost of membrane treatment. It has been shown that the installed cost of a reverse osmosis (RO) plant can be reduced by up to 27% using larger diameter elements.Large diameter elements provide savings in footprint and building costs, as well as savings in the number of connections, to reduce the installed cost of a brackish water RO or nanofiltration (NF) system. This article presents case studies where large diameter reverse osmosis (RO) elements were used, including the reasons why large diameter elements were selected for specific projects. Systems desalinating brackish groundwater for potable water supply in the United States include the City of Goodyear, Arizona; the City of Waupun, Wisconsin; and the Tate-Monroe Water Association of Ohio. In Australia, the Bundamba AWT Plant in Queensland treats municipal effluent for reuse. At Joe White Maltings, an integrated membrane system, combining a membrane bioreactor (MBR) and an RO system, allows wastewater from the plant to be recycled. This article appeared in D&WR magazine's February/March 2009 issue.
Water leads as membrane market to hit US$ 39.2 billion by 2019
The global membrane separation market is expected to grow at a compound annual growth rate (CAGR) of 10.8% from 2013 to reach US$ 39.2 billion in 2019 with water and wastewater leading the charge according to a recent report.
SEDA workshop to look at RO operational variances
The Southeast Desalting Association (SEDA) is to hold a Workshop on Brackish and sea water reverse osmosis operational variances in Gibsonton, Florida, at the Tampa Bay Desal II Water Treatment Plant.
IDA announces final academy details for Singapore
The International Desalination Association (IDA) has announced details of its inaugural set of courses and faculty for the new IDA Desalination Academy, which will officially be launched in conjunction with the 2012 Singapore International Water Week.
Desalitech teams with TEC to target municipalities
Reverse osmosis (RO) specialist, Desalitech, has tied up with Treatment Equipment Company (TEC) to provide sales support for municipal water treatment projects.
EDS/Wetsus issues membrane conference call for papers
A deadline of 30 June 2012 has been set for abstracts for the eighth in the series of conferences on Membranes in Drinking & Industrial Water Production, which will take place at Leeuwarden in the Netherlands on 10‑12 September 2012.
New US/Canadian contracts for H2O Innovation
Canadian H2O Innovation Inc announced on 21 December 2011 that it had recently been awarded new membrane water-treatment contracts totalling Can$ 4.7 million (US$ 4.6 million).
EDS desalination course dates for 2012 published
The European Desalination Society (EDS) has published dates for its series of courses for 2012, which will take place in February, April and June.
Q&A: AMTA president Brent Alspach on why the need for membranes has never been more acute
In the week of the AMTA/AWWA Membrane Technology Conference 2018, in Florida, US, Brent Alspach, president of AMTA and director of applied research at Arcadis, outlines the water challenges and how current and in-development membrane-based treatments are addressing them.
Miller Truby joins Professional Water Technologies
Miller Truby has joined Professional Water Technologies (PWT) in the USA as regional account manager.
SEDA Spring Symposium brochure available for download
The Southeast Desalting Association (SEDA) has a brochure available for its 2013 Spring Symposium to be held at Delray Beach, Florida.
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.