摘要
采用A/O工艺对含己内酰胺化纤废水进行连续动态试验。结果表明,在缺氧段与好氧段的容积比为1:2,水力停留时间48 h、BOD5污泥负荷0.15 kg/(kg.d)、混合液回流比为250%～300%时,COD去除率均达到95%以上,氨氮和总氮去除效果显著,出水达到天津市污水综合排放标准(DB 12/356-2008)二级标准。
The experimental study on treatment of chemical fiber wastewater containing caprolactam by A/O process was carried out continuously. The results show that when the volumetric ratio ofanoxic and aerobic section was 1：2, hydraulic retention time was 48 h, sludge loading of BOD5 was 0.15 kg/（kg, d） and mixed liquor reflux ratio was 250%-300% ,the removal rate of COD reached 95%. The removal effect of ammonia nitrogen and total nitrogen were remarkable, and the effluent quality met Grade two of integrated wastewater discharge standard in TianJin.
出处
《水处理技术》
CAS
CSCD
北大核心
2013年第5期49-51,共3页
Technology of Water Treatment
关键词
A
O工艺
化纤废水
己内酰胺
脱氮
A/O process
chemical fiber wastewater
caprolactam
nitrogen removal
