New distributors and EU compliance for PWT
Membrane chemicals supplier Professional Water Technologies (PWT), the US arm of Canada's H2O Innovation, recently signed agreements with two new distributors in Brazil and Argentina, increasing its presence in South America.
Experience helps boost production and stability at Ras Abu Jarjur
Improving production with reduced expenditure could be the main targets of any desalination facility around the world. Such feats are being methodically achieved at Ras Abu Jarjur reverse-osmosis (RO) plant in Bahrain as a result of a series of improvements. Of the many available desalination techniques, RO was seen from the earliest days as a reliable and cost-effective technology and was therefore employed at Ras Abu Jarjur. From the huge quantity of groundwater (40 million m /year) extracted from borewells, potable water totalling 29 million m /year is produced. The other 30% of water is being rejected to the Arabian Gulf, which has a similar salinity level and higher temperatures. Trials are being carried out to extend the brine staging by one more stage from two to three for the ninth and tenth trains and from three to four for the first to eighth trains, as the reject water from the trains is already filtered, acidified, dosed with antiscalant and most importantly possessing the required pressure energy (minimum of 38 bar) to be used. This strategy would increase the overall water recovery by another 4.5%. By closely following the guidelines of the scaling indices, solubility product limits of potential scale-forming constituents in the water and various performance-monitoring tools, it would be possible to recover another 2% of the water. The full article first appeared in the November/December 2008 issue of D&WR magazine. The paper on which it was based was awarded the prize for Best Oral Presentation at the International Desalination Association World Congress in Maspalomas in 2007.
A sustainable antiscalant for RO processes
One of the common complaints leveled at the desalination industry by environmentalists is discharges of brine from plants contain additional amounts of chemicals required to reduce scaling and biofouling. Carboxymethyl inulin (CMI) is an environmentally friendly antiscalant which has proven to be cost-effective in RO processes and therefore could have a positive contribution to addressing this concern. This article first appeared in the February/March 2011 issue of Desalination & Water Reuse magazine.
North Sea gas RO package supplied by UK company
A containerised reverse‑osmosis (RO) desalination package is to be supplied for an unmanned gas platform in the North Sea by Salt Separation Services of Rochdale, UK.
AWC in full production at new Tampa factory
American Water Chemicals (AWC) has resumed full production of its membrane water treatment chemicals following its recent move into a new 41,000 ft² (3,800 m²) building.
PWT signs three new overseas distributors
Three new distributors in Malaysia, Singapore and South Africa have been signed up by Professional Water Technologies (PWT), the business unit of Canada's H2O Innovation Inc.
PWT to be represented by Omya in EMEA region
Professional Water Technologies announced on 6 September 2011 that it had signed a sales representative agreement with Omya International AG, a leading global producer of industrial minerals, and a worldwide distributor of chemical products.
BWA changes hands once more
Desalination and water treatment chemical specialist BWA Water Additives has been sold for the second time in three years for around £ 185 million (US$ 300 million).
S Australia government questions Billiton desalination EIS
Desalination discharge led the list of concerns raised by the South Australia government in its submission on 24 April 2009 to BHP Billiton's environmental impact statement (EIS) related to its proposed expansion of its Olympic Dam mining operations.
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.
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.
Dow and Veolia system wins ultrafiltration deal for new Total floating oil production unit
Dow Water and Process Solutions and Veolia Water Technologies are to provide ultrafiltration technology for Total's new Moho Nord offshore floating deep water oil production unit off the Republic of the Congo coast.
Desalitech and Veolia tie up Mexican MoU
Desalitech Inc has signed a memorandum of understanding (MoU) with Veolia Water Solutions & Technologies to bring advanced cost‑effective high‑recovery water solutions to Mexico and additional countries worldwide.
IDE sells two MVC evaporators to Alberta oil-sands site
IDE Technologies Ltd announced on 10 March 2014 that it had sold two IDE horizontal mechanical vapor compression (MVC) evaporators to increase the produced water treatment capacity of a steam-assisted gravity drainage (SAGD) production site in Northern Alberta.
EDS launches 2014 desalination courses with Rome event
The European Desalination Society (EDS) kicks off a list of six events in its series of Master Courses with a three-day course in Rome, Italy, on Membrane Technology, Process & System Design on 3‑5 March 2014.
Desert community MD trial produces first water
First water was produced in mid-November 2013 by the membrane distillation plant set up in the Great Victoria Desert, Australia, by a team from the National Centre for Excellence in Desalination Australia (NCEDA).
LACSD signs up Desalitech for chloride‑removal test
Desalination system developer Desalitech is to support a pilot project with the Los Angeles County Sanitation Districts (LACSD) to upgrade two Santa Clarita Valley wastewater treatment plants in order to meet state‑mandated chloride limits, the company announced on 2 October 2013.
MD+VC succeeds at produced-water disposal site
A new desalination technique of membrane distillation (MD) combined with vapour compression (VC) has been pronounced a success in an effort to reduce produced water disposal costs at a Texas disposal well.
IDE/Clean Harbours tie-up aims at oil sands clean-up
Desalination designer and constructor IDE Technologies Ltd and US waste and wastewater specialist Clean Harbors today announced a joint research and development (R&D) program to increase the availability and reliability of mechanical vapor compression (MVC) evaporators for treating oil sands produced water in Alberta, Canada.
EDS lists desalination courses for 2013
The European Desalination Society (EDS) has released a complete list of its courses for 2013. EDS has been giving training certificates since 2003 to over 400 participants from all over the world.
Four workshops to precede AMTA / AWWA conference
There are now four preconference workshops prior to the Membrane Technology Conference & Exposition being held by the American Membrane Technology Association (AMTA) and the American Water Works Association (AWWA) in San Antonio, Texas, at the end of February 2013.
SCMA launching membrane operator certification
The South Central Membrane Association (SCMA) is kicking off a membrane operators certification program in January 2013 featuring the first of four modules being developed by the Southeast Desalting Association (SEDA) with SCMA and other affiliates of the American Membrane Technology Association (AMTA).
EDS publishes desalination courses line-up for 2013
Five courses for the first half of 2013 have been announced by the European Desalination Society (EDS). All except one will be staged in Genoa, Italy.
UF membranes tackle silica at Indian powerplants
Pentair X-Flow HFS 60 Silica ultrafiltration (UF) membranes are to be used in two projects in India for the removal of colloidal silica from surface water.
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.
Desalitech building demo plant with Layne Christensen
The originator of the Closed Circuit Desalination (CCD) technology, Desalitech Ltd, announced on 30 June 2011 that it will work with mineral and water drilling and treatment company Layne Christensen to design and build an innovative desalination system.
Proton compares closed-circuit versus conventional RO
Proton anti-scaling software from Amercian Water Chemicals was first introduced at the AMTA Conference in 2014. The platform's innovative approach to modelling membrane treatment systems which, unlike other anti-scalant predictors, accounts for ion complexes and ion activity in water, and differentiates between nano-filtration and reverse osmosis membranes, enabled it to improve on the accuracy of predicting water quality and chemical dosing requirements.
Desalitech closed-circuit technology set for BWRO project
Israel-based Desalitech Ltd announced on 7 April 2011 that it had been awarded a contract to design and build a reverse osmosis (RO) desalination system for Environmental Protection Technologies (EPT), a global company that leads the industrial wastewater treatment market in Israel.
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.
Al Sharif made VP sales for ERI's OEM group
California-based Energy Recovery Inc announced on 26 January 2011 the promotion of its former global sales director, Imad Al Sharif, to vice president of sales of OEM group, one of the fastest growing business groups at ERI.
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.
Rotec's flow reversal scoops Rising Star Award at TechXchange
Flow reversal firm Rotec has won the Rising Star Award at TechXchange at Singapore International Water Week 2018.
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.
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.
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.
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.
UF solution to rural water supplies?
Sub-Saharan Africa is not a region generally associated with membrane technology, but that is now changing. Desalination projects are already appearing in, for example, South Africa and Ghana, and South Africa is fast developing its own technologies. Water treatment manufacturer Ikusasa is developing its own UF modules both for rural water supply and for desalination pretreatment. The company is also developing its reverse-osmosis desalination capability and is currently looking at anodic Zn for scaling protection in treating high-calcium groundwater. This article appeared in the February-March 2010 issue of Desalination & Water Reuse.
New recovery technologies can minimize concentrate volumes
Several emerging technologies show potential to enhance recovery rates during desalination of brackish water. These processes include emerging approaches for concentrate treatment and new desalination technologies. Emerging concentrate treatment technologies that aim to enhance recovery and thus minimize concentrate include physical-chemical or biological treatment of concentrate followed by further reverse-osmosis (RO) treatment; new RO methods based on softening pretreatment and pH control to result in a high-efficiency system; a new RO separator that uses vibration shear force; and seeded slurry processes combined with RO to remove scaling compounds in a controlled fashion. Some of these emerging technologies could be applied at full-scale as the primary desalting step in non-municipal applications. For municipal applications, however, these technologies would likely be most cost-competitive when used to treat the concentrate from a conventional RO system, which is being used as the primary desalting step. These emerging technologies have the potential to enhance recovery rates by about 10% or more, thus resulting in significant concentrate minimization. Additional research, both at the fundamental and applied levels, will be important and beneficial to develop, optimize, and implement practical solutions to minimize concentrate. The full article first appeared in the November/December 2008 issue of D&WR magazine
Video Q&As - the lowdown on technology trends from MTC18
Water technologists spoke of innovations in science and data to address the challenges emerging from the latest membrane applications, at the AMTA/AWWA Membrane Technology Conference 2018 in Florida, US.
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.
The Long Read: Where's the innovation in brine treatment?
As water scarcity bites and the drive to recycle water grows, the focus on recovering clean water and other resources from brine is sharpening. The challenge is particularly pertinent for industrial operators.
Desalitech recognised for topping water recovery rate records
Desalitech has won the IDA Industry Technology and Innovation Leader in Water Reuse and Conservation Award of Distinction, thanks in part to its work at Padre Dam Advanced Water Reclamation plant in Southern California.
GE bids to be market leader in digital services for water companies
GE has unveiled a new suite of software as it moves to establish a leading position within digital services for the water industry.
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.
Desalitech bags water treatment deal for five power plants
Desalitech has won a contract with Southern California Edison (SCE) to supply five of its ReFlex water treatment systems for installation at SCE's peak power generating stations in California.
Adionics launches liquid-to-liquid desalination system
France-based Adionics has launched a smart desalination solution that is able to remove specific salts to address the growing demand coming from oil and gas, food and beverages as well as mining.
Scaling-up and piloting of pressure-retarded osmosis
When Statkraft abandoned its pilot pressure retarded osmosis project it took much of the momentum out of the industry s then accelerating progress. This was despite the reported successes of Japan s giant Mega-ton project. The authors here outline the chief challenges and the prevalent views of the future among leading figures in the industry. This article first appeared in the November/December 2014 issue of Desalination & Water Reuse magazine.