Water & Wastewater Treatment Magazine
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Thames Water rolls out energy- reducing sludge pump solution In Focus: sludge pumps P rogressive cavity pump specialist SEEPEX has developed a new system to improve dewatered sludge handling, enabling long distance transfer with reduced operational costs by using a combination of PC pump technology and dense-phase conveying. The technology has already been trialled by Thames Water at its Reading Sewage Treatment Works (STW) and is now being installed as part of the new Thames Water Riverside project, providing an energy-efficient, high- performance alternative to conventional sludge handling systems. SEEPEX has a longstanding relation- ship with Thames Water, having worked for many years to increase the water company's process efficiency and reduce the energy consumption of dewatered biosolids sludge handling. As the UK's largest water and sewage treatment company, Thames Water provides wastewater services to 15 million customers and is committed to reducing its energy consumption. Its interest in A smart air injection (SAI) system combined with progressive cavity pumps is proving key to more efficient sludge handling at Thames Water's Reading Sewage Treatment Works SAI was linked to a new project at Riverside STW to handle dewatered sludge. Testing the water Following a visit by Thames Water representatives to observe SAI in action in Sweden, the company decided to measure the potential energy savings it could make by installing a trial SAI system at its Reading STW. This site had previously used piston pumps, but as a result of process limitations and high WWT PUMP AND VALVE SUPPLEMENT 2019 27 The smart air injection solution has allowed Thames Water to significantly reduce pump length and installed motor power