Authors: Hua Zou GuoCheng Du WenQuan Ruan Jian Chen
Publish Date: 2006/03/07
Volume: 22, Issue: 7, Pages: 701-706
Abstract
The effects of nitrate on phosphorus release and uptake in a sequencing batch reactor for biological phosphorus removal was investigated The addition of nitrate decreased phosphorus release in the anaerobic stage The synthesis of polyhydroxyalkanoates was decreased with the presence of nitrate possibly due to the competitive utilization of the carbon source by PHA synthesis and denitrification of nitrate Instead of oxygen nitrate could be used as an electron acceptor for phosphorus removal However the simultaneous addition of nitrate and acetate greatly reduced the phosphorus removal rate Phosphate and nitrate could be removed simultaneously with nitrate as the electron acceptor and the continuous and steady feeding of nitrate was beneficial to phosphate removal
Keywords: