ECS refurbishes screw pump to keep sewage works operating Case Study: 061 Wessex Water’s Avonmouth wastewater recycling, bioresources and renewable energy park is set to serve its 1,000,000+ population for decades to come following a major overhaul to inlet pumping station, which is one of the largest of its kind in the UK. The two Archimedes screws at the inlet works have proven the durability of this pump type. These essential pieces of plant each measure 20 metres in length, 3.1 metres in diameter and weigh 21 tonnes with a 3645 litres per second capacity. However, after 40 years’ service, one had become so worn that ECS Engineering Services was asked for proposals to replace it.some detailed planning and the application of significant expertise. It was not possible to

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