Advanced sludge reduction and phosphorous removal process  

作　　者：吉芳英 左宁 杨肃博 胡玉琴 

机构地区：[1]Key Laboratory of Three Gorges Reservoir Region's Eco-Environment, Ministry of Education, Chongqing University,Chongqing 400030,China

出　　处：《Journal of Central South University of Technology》2006年第3期313-317,共5页中南工业大学学报（英文版）

基　　金：Project (50278101) supported by the National Natural Science Foundation of China ; Project( CSTC, 2005AB7030)supported by Chongqing Key Technologies Research and Development Program

摘　　要：An advanced sludge reduction process, i.e. sludge reduction and phosphorous removal process, was developed. The results show that excellent sludge reduction and biological phosphorous removal can be achieved perfectly in this system. When chemical oxygen demand ρ（COD） is 332 - 420 mg/L, concentration of ammonia p（NH3-N） is 30 - 40 mg/L and concentration of total phosphorous p（TP） is 6.0 -9.0 mg/L in influent, the system still ensures ρ（COD）〈23 mg/L, ρ（NH3-N）〈3.2 mg/L and ρ（TP）〈0. 72 mg/L in effluent. Besides, when the concentration of dissolved oxygen ρ（DO） is around 1.0 mg/L, sludge production is less than 0. 140 g with the consumption of 1 g COD, and the phosphorous removal exceeds 91 %. Also, 48.4% of total nitrogen is removed by simultaneous nitrification and denitrification.An advanced sludge reduction process, i.e. sludge reduction and phosphorous removal process, was developed. The results show that excellent sludge reduction and biological phosphorous removal can be achieved perfectly in this system. When chemical oxygen demand ρ（COD） is 332 420 mg/L, concentration of ammonia ρ（NH3-N） is 30 40 mg/L and concentration of total phosphorous ρ（TP） is 6.0 9.0 mg/L in influent, the system still ensures ρ（COD）<23 mg/L, ρ（NH3-N）<3.2 mg/L and ρ（TP）<0.72 mg/L in effluent. Besides, when the concentration of dissolved oxygen ρ（DO） is around 1.0 mg/L, sludge production is less than 0.140 g with the consumption of 1 g COD, and the phosphorous removal exceeds 91%. Also, 48.4% of total nitrogen is removed by simultaneous nitrification and denitrification.

关 键 词：sludge reduction phosphorous removal dissolved oxygen simultaneous nitrification and denitrification 

分 类 号：X703.1[环境科学与工程—环境工程]