化学生物絮凝悬浮填料层工艺研究  

Research on Process of Chemical-biological Flocculation with Suspended Media Blanket

作　　者：刘绪为[1] 夏四清[1] 汪珅[1] 

机构地区：[1]同济大学污染控制与资源化研究国家重点实验室,上海200092

出　　处：《净水技术》2006年第3期40-42,共3页Water Purification Technology

摘　　要：考察了一体化化学生物絮凝悬浮填料床工艺处理城市污水的效果,通过对絮凝剂不同投加量(20mg/L,40mg/L,60mg/L)的比较分析,从而确定较佳的运行参数。实验结果表明：在投加絮凝剂聚合硫酸铁(PFS)为60mg/L (含Fe量18．5%)、水力停留时间6h、填料填充率为50%、内回流比为1：1、污泥回流比为0．75：1的条件下,当进水COD_(Cr)为200～400mg/L、平均312mg/L,氨氮20～80mg/L、平均62．5mg/L,总磷3．3～7．5mg/L,平均4．8mg/L,pH=6～9时,出水COD_(Cr),平均浓度为50mg/L,氨氮平均浓度为10．2mg/L,总磷平均浓度为0．5mg/L,均满足《污水综合排放标准》。The research of treating municipal wastewater by the combined process of chemical-biological flocculation and suspended media packing bed was presented in this paper. Through the parallel experiments on different PFS dosage of 20mg/L, 40mg/L, 60mg/L, it indicated that the better operating condition is the hydrauhc retention times （HRT） of 6 hours; PFS dosage of 60mg/L; 50%suspended media; 1：1 internal recychng ratio 0.75：1 sludse recycling ratio. When the influent concentration of CODCr, NH3-N and rip varied in a range of 200mg/L-400mg/L（average 312mg/L）, 20mg/L～80mg/L （average 62.5mg/L） and 3.3mg/L～7.5mg/L（average 4.8mg/L）, the average effluent concentrations were 50mg/L, 10.2mg/L and 0.5mg/L, respectively which all meet the requirement for waste water disposal.

关 键 词：化学生物絮凝 悬浮填料床 城市污水处理 

分 类 号：X703.1[环境科学与工程—环境工程] TQ053.5[化学工程]