Severn Trent Services Showcases New Water Treatment Solutions at IFAT 08

BIRMINGHAM, United Kingdom - March 28, 2008 - Severn Trent Services, one of the world's leading suppliers of water and wastewater solutions, will highlight its latest technological innovations for water treatment at IFAT 2008 - the 15th International Trade Fair for Water, Sewage, Refuse and Recycling. The exhibition is being held in Munich on May 5-9. The company's booth will be in Hall A2 at Stand 504.

Severn Trent Services is a leading supplier of electrochlorination technology. Since 1988, the company has installed more than 3,500 ClorTec® on-site sodium hypochlorite generating systems worldwide. The company has developed a cost-effective system for the on-site production of sodium hypochlorite for use in swimming pools, cooling towers and food and drink applications. The ClorTec® SCT mini on-site sodium hypochlorite generating system is a compact, innovative new product that offers a safe alternative to the transportation of hazardous chemicals. The system also features ease of maintenance and reliable performance.

Visitors can also see the company's new MicroDynamics(TM) - Microwave UV disinfection solution. The electrodeless design has a three-year bulb life guarantee - three times that of competitive brands. In addition, there is no detrimental effect to the bulb caused by it being switched on and off - a feature not possible with systems containing electrodes.

For clean water filtration projects, information on TETRA® LP Block(TM), a dual-parallel lateral underdrain filter floor for RGF and GAC filters, will also be available. The system provides excellent distribution of both backwash air and water to offer more efficient bed cleaning and lower operating costs. Severn Trent Services recently has been awarded several contracts to supply TETRA LP Blocks for pre-treatment at desalination plants throughout Europe. Severn Trent Services technical consultants will be available at the show to discuss the technology's many applications.

Visitors can also gather information on TETRA tertiary wastewater filtration solutions. Severn Trent Services is one of the world leaders in this technology as TETRA® DeepBed(TM) filters now treat more than 1 million m³/d of wastewater in Europe alone.

The TETRA® DeepBed Filter from Severn Trent Services is a down flow sand filter for the filtration of effluent from municipal wastewater treatment plants. The technology offers process flexibility and high efficiency backwash for the removal of biological oxygen demand (BOD) and suspended solids.

The TETRA® NSAF is a submerged aerated media process for the tertiary removal of ammonia (nitrification) from municipal and industrial wastewaters. The process uses proven TETRA T-Block(TM) filter floors and blast furnace slag media. The TETRA® SAF (Submerged Aerated Filter) is also available for BOD or BOD and Ammonia removal.

The Jet Aeration Sequencing Batch Reactor (SBR) available from Severn Trent Services is an aeration process for the complete treatment of sewage and industrial wastewaters. A Jet Aeration SBR plant can remove BOD, ammonia and suspended solids in a single tank.

About Severn Trent Services

Severn Trent Services (, with global headquarters in Fort Washington, Pa., USA, is a leading supplier of water and wastewater solutions. The company's broad range of products and services is concentrated around disinfection, instrumentation and filtration technologies, contract operating services and state-of-the-art residential metering products and services. Our analytical services group is the United Kingdom's leading environmental testing organization, and our international operating services business provides worldwide contract operation and support for all aspects of water and wastewater utility operational development and business transformation. Severn Trent Services is a member of the Severn Trent Plc (London: SVT.L) group of companies. Severn Trent is a FTSE 100 company.

Lori Doppelt

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