www.armgroupltd.co.uk t. +44 (0) 1889 583811 natural wastewater treatment Need Uffington Waste Water Treatment Works (WwTW) is operated by Thames Water and serves a population of 700-800 in a rural situation. The WwTW comprised a Primary Settlement Tank, Filter Bed and Humus Tank. Due to its age and an increasing load from the village the works required chemical coagulant dosing to improve load removal through precipitation, settlement and

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