Short Term Effect of Carbon Source to Phosphorus Release in Enhanced Biological Phosphorus Removal Process
Phosphorus release insufficiency usually is the main reason of the degradation in enhanced biological phosphorus removal (EBPR)process.Anaerobic-anoxic-aerobic(A2/O)oxidation ditch(OD)process treating the municipal wastewater combined with batch test.Based on the EBPR stabilization of the OD system,the activated sludge of SBR was taken from the aerobic zone of the OD,phosphorus release after acetate added,anoxic phosphorus uptake and denitrification proceeding at difierent carbon sources was studied.The effluent activated sludge of the aerobic zone of the anaerobic--anoxic-aerobic oxidation ditch process was adapted.5 kinds of carbon source such as acetate,propionate.glucose.ethanol and methanol were used.The main batch test processed though batch test with 10L reactor.The results indicated that：(1) In anaerobic conditions,PAOs released P rapidly with acetate or propionate acting as carbon sources,specific P release rate was 290.5mgP/(gVSS.d)and 236.7mgP/(gVSS.d)respectively.However,P released slowly when glucose,ethanol or methanol acting as carbon source,the specific P release rate was 49.4mgP/(gVSS.d),38.8mgP/(gVSS.d)and 8.9 mgP/(gVSS.d)respectively.(2)Whereas in anoxic conditions,P release rate was almost the same to in the anaerobic conditions if acetate or propionate act as carbon sources.But P seldom release with glucose,ethanol or methanol acting as carbon source in anoxic conditions.(3)PAOs utilized NO3-to uptake P after P-release,if original NO3-was high enough, when acetate acts as carbon source.
enhanced biological phosphorus removal(EBPR) anaerobic phosphate release carbon source PAOs nitrate
HOU Hongxun WANG Shuying PENG Yongzhen WANG Gan YUAN Zhiguo WANG Yingzhe
Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Colle Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Colle Anhui Guozhen Environmental Protection Science and Technology Co.,Ltd.,Hefei 230088,China Anhui Guozhen Environmental Protection Science and Technology Co.,Ltd.,Hefei 230088,China;Advanced W
国际会议
合肥
英文
339-344
2008-06-05（万方平台首次上网日期，不代表论文的发表时间）