摘要
使用分散式家庭生活污水净化槽,调查了不同曝气量条件下净化槽各区对实际生活污水的净化效果,确定了最佳曝气量。试验证明,进水量为15L·d-1,经过两级厌氧处理后,COD、BOD5和浊度的去除率均在60%以上,当好氧区曝气量为3.28m3·m-3·h-1,溶解氧量为3.15mg·L-1时,出水COD、BOD5、NH3-N和浊度分别为46、9.6、23.8mg·L-1和8.2NTU;处理量为20L·d-1,出水BOD5为12.4mg·L-1,远低于国家要求的排放标准,具有较好的抗冲击性能。
The influence of domestic sewage treatment in the different zones was investigated with a small-sized decentralized domestic sewage purifying-tank in different aeration rates, and the best aeration rate was obtained from the experiment. It is found that the removal efficiency of COD, BOD5 and turbidity was more than 60% in the two anaerobic zones when the aeration zone was aerated at 3.28m^3·m^-3·h^-1 and the influent was 15L·h^-1, the DO of the aeration zone was 3.15mg·L^-1, and the COD, BOD5, NH3-N and turbidity of the effluent was 46mg·L^-1, 9.6 mg·L^-1, 23.8mg·L^-1 and 8.2 NTU respectively; while the influent was changed to 20L·d^-1, the BOD5 of the effluent was 12.4mg·L^-1 which was further lower than the discharge standard. The good shock-resistance of the purifying-tank was also shown from the experiment.
出处
《水处理技术》
CAS
CSCD
北大核心
2009年第5期35-39,共5页
Technology of Water Treatment
基金
天津市农委重大项目(0604140)
关键词
净化槽
曝气量
生活污水
purifying-tank
aeration rate
domestic sewage
