化学生物絮凝处理生活污水优化试验研究  

STUDY ON OPTIMIZATION OF CHEM-BIOLOGICAL COAGULATION PROCESS TREATING DOMESTIC WASTEWATER

作　　者：郭旋[1] 李伟光[1,2] 田文德 

机构地区：[1]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 [2]城市水资源开发利用(北方)国家工程研究中心,黑龙江哈尔滨150090

出　　处：《水处理技术》2011年第12期64-67,共4页Technology of Water Treatment

基　　金：国家水体污染控制与治理科技重大专项(2009ZX07317-008)

摘　　要：以生活污水为研究对象,采用新型复合聚硅酸镁盐絮凝剂(CSM),探讨了化学生物絮凝工艺的影响因素及最佳运行条件,考察了化学生物絮凝工艺对pH、水温的适应能力。结果表明,在污水水温为14～16℃情况下,化学-絮凝工艺最佳运行条件为:污泥活化时间2.0 h,MLSS/COD=1.5～2.0,曝气强度为0.04 m3.h-1,反应时间为40 min,絮凝剂投量为60 mg.L-1。在利用CSM为絮凝剂的条件下,化学生物絮凝工艺对原水pH适应范围较宽。原水水温对SS和PO43--P去除效果影响不大,而COD和NH4+-N的去除率则随着水温的下降而下降。Anewtypeofcoagulant-composite-silicate-magnesium-coagulant （CSM）was used in chem-biological coagulation process to treat domestic wastewater, and its operating conditions were optimized. Furthermore, its adaptability to pH value and temperature of raw water was also investigated. The results showed that, the optimistic chem-biological operating conditions： sludge-activating-time, 2.0 h; MLSS/COD, 1.5 -2.0; intensity of aeration mixing, 0.04 m3. h-1 and reaction time, 40 min and CSM dosage, 60 mg. L-1 at the temperature of 14 - 16 ℃. Chem-biological coagulation process could exhibit well at a wide range ofpH value. SS and PO43--P removal had little correlation with the temperature of raw water, but COD and NH4＋-N removal decreased with it.

关 键 词：生活污水 化学生物絮凝工艺 复合聚硅酸镁盐絮凝剂 

分 类 号：TQ314.253[化学工程—高聚物工业] X799.3[环境科学与工程—环境工程]