Effect of low-temperature for the treatment of municipal wastewater in a full-scale BAF
The impact of temperature on nitrification in biological aerated filter (BAF), process was studied in order to improve the nitrification performance in municipal wastewater treatment. When the water temperature dropped, the nitrification performance obviously deteriorated. Effects of important process variables such as DO concentration and backwash period to nitrification performance were investigated when the water temperature dropped from 23℃ to 9℃. The study shown that by raising the DO concentration to enhance nitrification performance was not available in low water temperature environment and by extending the backwash period to enhance nitrification was available. The effluent NH4-N concentration reduced from 8mg/L to 6.5mg/L, when the backwash period extended from 48 hours to 65 hours and the the effluent concentration of SS and head loss were all in a permissible range.
HAN Hongjun HU Hongbo XU Chunyan LI Yufei
State Key Laboratory of Urban Water Resources and Environment, Harbin Institute of Technology Harbin, China
国际会议
成都
英文
1-4
2010-06-18（万方平台首次上网日期，不代表论文的发表时间）