Abstract
Nitrogen removal from wastewater is rapidly becoming an essential but expensive upgrade for many small wastewater treatment works in the UK. Using a pilot-scale waste stabilization pond effluent, this paper highlights a low-cost upgrading unit, capable of removing BOD, SS, ammonia and faecal colliforms. Results are given for 12 months of operation and it is suggested that these units could be used by the water companies when ammonia removal is necessary to meet with current legislative demands and prevent eutrophication of receiving watercourses.
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