摘要
考察了化学生物絮凝和化学混凝两工艺对低浓度城市污水的处理效果。试验表明,在PAC加入量为70mg/L、PAM加入量为0.5mg/L、絮凝反应时间为35min时,化学生物絮凝工艺对COD的平均去除率为61%,对TP的平均去除率为70%,对SS的平均去除率为90%,效果明显优于化学混凝工艺;在化学生物絮凝工艺中污泥回流不仅可以提高去除效果,而且对进水水质波动有一定的稳定作用。
Investigation was made on the treatment effect of low strength urban wastewater by using chemical bio-flocculation process and chemical coagulation process. The result showed that when polyaluminium chloride dosage is 70 mg/L, PAM dosage is (0.5) mg/L, and flocculation reaction time is 35 min, average removal rate of chemical bio-flocculation process is 61%, 70%, and 90% respectively for COD, TP and SS, the removal effect of this process is greatly superior to that of chemical coagulation process. In addition, sludge return from chemical bio-flocculation process can not only improve the removal effect, but also has some stabilization effect on the fluctuation of inflow quality.
出处
《中国给水排水》
CAS
CSCD
北大核心
2004年第4期5-8,共4页
China Water & Wastewater
基金
国家高技术研究发展计划(863)项目(2002AA601320)
关键词
低浓度城市污水
化学生物絮凝
化学混凝
low strength urban wastewater
chemical bio-flocculation
chemical coagulation
