Round-up: Membrane Technology

July 1, 2009
The MegaMagnum® RO and NF systems utilize the world’s highest area spiral-wound membrane elements to reduce complexity, footprint and installation of municipal and industrial water treatment systems.

A membrane for all occasions

Click here to enlarge image

The MegaMagnum® RO and NF systems utilize the world’s highest area spiral-wound membrane elements to reduce complexity, footprint and installation of municipal and industrial water treatment systems. The 1500-m2 PURON™ module is designed for large-scale MBR applications with greater membrane packing density, lower energy costs for aeration, with greater compatibility with other available systems. Koch Membrane Systems, Wilmington, Massachusetts, USA, Enquiry No. 46

Brackish water membranes

Click here to enlarge image

Coinciding with a company reorganization, Toray Membrane USA introduces two new low pressure brackish models of TMG20-400C and TMG20-430C RO membrane elements. They feature a new permeate tube design, standardizing permeate tube dimensions without special adaptors when replacing competitor elements. Toray also offers a new 34 mil brine spacer for models of TM720N-400 high rejection brackish elements and TMG20N-400 low pressure brackish elements. The thicker brine spacer makes the element more resistant to fouling and easier to clean in waters with higher suspended solids and difficult process water applications. In other news, Randy L. Truby was named chairman of Toray Membrane global marketing & sales, working closely with Toray headquarters in Japan and its offices in Switzerland, Singapore, Dubai, etc. COO Steven J. Cappos was promoted to CEO and Gabriel Juarez to VP of operations. Toray Membrane USA Inc., Poway, California, USA, No. 47

Severn Trent saves U.S. town millions

Severn Trent Services renewed a public-private partnership with Lewes, Delaware, USA, for operation and maintenance of the seaside town’s 1.5 MGD wastewater system was renewed at a value of $450,000 a year. Since the PPP’s start in 2002, its technical specialists worked with the Lewes Board of Public Works to obtain an NPDES discharge permit that wouldn’t require relocating effluent discharge from the Lewes Rehoboth canal, saving the town millions of dollars. In 2005, the town began building a new facility with the MBR technology. It was completed at half the cost of the original concept that would have required spray irrigation of effluent. The new MBR facility, dedicated in April 2008, is the first of its kind in Delaware. Severn Trent Services Inc., Fort Washington, Pennsylvania, USA, No. 48

New point-of-use polisher improves water analysis

Scientists performing analyses on common industrial contaminants can now be assured of VOC-free ultrapure water for their work thanks to the new VOC-Pak™ filter cartridge from Millipore for removal of VOCs from ultrapure water. Analytical methods used to test drinking water and other samples for VOCs use ultrapure water as a critical reagent, but even low VOC levels can affect analysis accuracy. “This cartridge removes these contaminants to levels below detectable limits for many common VOCs,” said Jean-François Pilette, group product manager for Millipore’s Lab Water systems. Designed for use with Millipore’s Type I water purification systems (such as the Milli-Q®, Direct-Q®, Synergy® and Simplicity® systems), the filter cartridge is compatible with the water dispensing outlet to provide VOC-free water for standard solutions preparation, sample dilution or glassware rinsing. Employing activated carbon media, it’s effective provided VOCs in feed water don’t exceed 1 ppb (1 µg/L) and TOC is below 5 ppb. Millipore Corp., Billerica, Massachusetts, USA, No. 49

UF drinking water modules

German UV drinking water specialist Seccua GmbH and Nitto Denko unit Hydranautics, of Oceanside, California, USA, signed a cooperative agreement to jointly develop new markets and to expand Hydranautics’ extensive product offering with 4” ultrafiltration modules supplied by Seccua. To date, Hydranautics makes and distributes modules for large-scale projects in the UF market. This new partnership opens the door to a dominant position in the rapidly growing global market for small-scale installations. Seccua will share its knowledge in the field and supply Hydranautics with UF modules. With production facilities near Munich since 2004 and offices in Surprise, Arizona, USA, over 400 of Seccua systems are now in successful operation, including in dining cars of the latest generation of high-speed, inter-city trains in Europe. The first unit went into operation in 1998. The company is capable of manufacturing 1,500 units a year. Seccua GmbH, Steingaden, Germany, No. 50

World’s first EDI module with membrane stage

Click here to enlarge image

Septron Bio-Safe is the world’s first electro-deionisation (EDI) module with an integrated membrane stage. It’s based on proven, patented spiral-wound technology and has an additional membrane unit for removal particles and bacteria. The EDI module for production of Highly Purified Water (HPW) is available in a cold-water version and one which can be sanitised with hot water at >80 °C. Both versions are available in sizes with outputs of 500-3,000 L/h. Combination with a preceding RO stage makes it possible – without additional UF – to produce HPW with bacterial counts of = 10 CFU/100 ml. The module can be retrofitted quickly and easily on existing Osmotron systems and allows considerable improvement in microbiological safety of existing pure water systems. Christ Water Technology Group, Aesch, Switzerland, No. 51