The Options Available for Ammonia Removal at Davyhulme Sewage‐Treatment Works

In: Water and environment journal, Band 4, Heft 5, S. 457-468

Abstract

ABSTRACTDavyhulme sewage‐treatment works, which serves the Manchester drainage area, is one of the lagest in the UK. The dry‐weather flow is 300 000 m3/d, and the plant receives a wide range of industrial effluents. The works has been identified as a major source of pollution in the Mersey estuary, with an average discharge of 6500 kg ammonia/day. As part of its initiative to improve the Mersey estuary, North West Water intends to reduce the daily ammonia load from Davyhulme to about 1000 kg/d by 1995. In order to assess the capabilities of both conventional and novel processes to achieve this degree of ammonia removal, a number of on‐site pilot plants were established. This paper reports on the pilot‐plant studies and the selection of process options. Recommendations with regard to design parameters and final process selection are given.