摘要
采用模拟配制生活污水 ,研究循序间歇反应器 (SBR)工艺在不同运行条件下对好氧污泥颗粒化和生物除磷效果的影响 .试验分别对进水中不同COD/TN比 ( 1 1 .79,1 8 85,2 0 72 ,2 4 .66)、COD/TP比 ( 2 7 85,4 4 53,4 8 93、58 2 5)、TN/TP比 ( 4 0 0 ,2 .36,1 54)、温度 ( 2 2℃ ,1 5℃ ,8℃ )和污泥龄 ( 1 6d ,1 0d ,5d)作比较 ,发现进水中较高的COD/TN比 ( 2 4 66)、COD/TP比 ( 58 2 5)、温度 ( 2 2℃ )和较低的污泥龄 ( 1 0d)对生物除磷和颗粒的形成有利 ;适当的TN/TP比 ( 2 36)、接种污泥的选择是好氧颗粒污泥形成的关键 .
This paper investigate the effect of the different operating conditions on the aerobic sludge granulation and biological P removal characteristics in SBR by using synthetic domestic wastewater as feed. Different ratios of COD/TN (11.79, 18 85, 20 72, 24 66), COD/TP (27 85, 44 53, 48 93, 58 25), TN/TP (4 00, 2 36, 1 54), temperature(22℃, 15℃, 8℃) and sludge retention time(16d, 10d, 5d) are tested in this process. It is found that the high ratios of COD/TN (24 66), COD/TP (58 25), temperature (22℃) and low SRT (10d) are beneficial to the phosphorus removal and the cultivation of the aerobic granular sludge. The proper TN/TP rate (2 36), dissolved oxygen and selection of anaerobic seed sludge are basic requirement and most important factors to guarantee such aerobic granules in the process.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2001年第2期87-90,共4页
Environmental Science
基金
清华大学研究基金
