Influence of carbon source and temperature on the denitrifying phosphorus removal process  

作　　者：WANG Yayi WANG Shuying PENG Yongzhen Zhu Guibing LING Yunfang 

机构地区：[1]School of Civil Engineering and Architecture,Zhejiang University of Technology,Hangzhou 310014,China [2]Key Laboratory of Beijing for Water Quality Science and Water Environment Recovery Engineering,Beijing University of Technology,Beijing 100022,China [3]School of Municipal and Environmental Engineering,Harbin Institute of Technology,Harbin 150090,China

出　　处：《Frontiers of Environmental Science & Engineering》2007年第2期226-232,共7页环境科学与工程前沿（英文）

基　　金：This work was supported by the National Natural Science Foundation of China(Grant No.50608064 and 50138010);the Natural Science Foundation of Zhejiang Province(Grant No.Y505031);the China Postdoctoral Science Foundation(Grant No.2005037296).

摘　　要：To supply the valuable operating parameters for the popular usage of the new denitrifying phosphors removal process,it is essential to study the dominant biochemical reactions and the characteristics of denitrifying phosphorus removing bacteria(DPB).Thus,parallel batch experiments using DPB sludge were carried out to assess the effect of substrates(sewage,HAc,and endogenous carbon source)on denitrifying dephosphorus removal efficiency in this study.The results showed that the initial specific phosphorus release rate increased with the high concentration of the short-chain volatile fatty acids ratio in the influent,and sufficient phos-phorus was released by DPB.This improved the subsequent denitrification and phosphorus uptake efficiency.The specific endogenous denitrification mainly relies on the internal carbon source(PHB)stored by poly-P bacteria.Denitrifying phosphorus removing bacteria were very hungry when the internal PHB was consumed.Consequently,the specific endogenous denitrification rate was low and the phosphorus uptake did not happen.On the other hand,in the experiment,the denitrifying phosphorus removal performance under two temperature conditions(8-10°C and 25-26°C)was also investigated and analyzed.It was found that the lower temperature decreased the specific phosphorus release and uptake rate,but did not inhibit the denitrifying phosphorus removal completely.Therefore,the negative influence of the low temperature on the overall phosphorus removal was not significant.

关 键 词：denitrifying phosphorus removal denitrifying phosphorus removing bacteria(DPB) carbon source TEMPERATURE 

分 类 号：X70[环境科学与工程—环境工程]