摘要
在A2/O池前加水解池,并将二沉池出水部分回流到水解池,增加水解反硝化作用,研究改进水解池-A2/O工艺对处理城镇生活污水的影响情况。试验结果表明,在二沉池到水解池的回流比分别为28%和40%时,系统出水TN质量浓度分别为13.22mg·L-1和9.61mg·L-1,COD分别为72mg·L-1和54mg·L-1,TP质量浓度分别为1.9mg·L-1和1.1mg·L-1,2个工况下出水TN质量浓度均小于15mg·L-1,达到了城镇污水处理厂污染物排放标准(GB18918-2002)一级A标准,满足了试验目的。
Hydrolysis was setting up in front of A^2/O and part of secondary sedimentation tank effluent was returned to the hydrolysis in order to increasing hydrolysis denitrification, so as to study the effects of improved hydrolysis-A^2/O to the treatment of urban sewage. The result shows that the effluent concentration of TN, COD, TP was 13.22mg·L^-1 and 9.61mg·L^-1, 72mg·L^-1 and 54mg·L^-1, 1.9mg·L^-1 and 1.1mg·L^-1 respectively when the reflux ratio from the secondary sedimentation tank to the hydrolysis was 28% and 40%. The effluent concentration of TN was all less than 15mg·L^-1 at the both conditions so that the effluent quality attained 1 -class criteria specified in Discharge Standard of PoUutants for Municipal Wastewater Treatment Plant （GB 18918-2002）.
出处
《水处理技术》
CAS
CSCD
北大核心
2009年第12期102-104,108,共4页
Technology of Water Treatment
关键词
水解池
回流比
水解反硝化
hydrolysis
reflux ratio
hydrolysis denitrification
