阳离子絮凝剂PDA的合成与应用研究——对城市污水的污泥脱水的效果比较  

Synthesis and Application of Cationic Flocculant PDA ——Study on Sludge Dewatering in Processing Municipal Sewage

作　　者：张跃军[1] 顾学芳[1] 陈伟忠[1] 

机构地区：[1]南京理工大学化工学院,南京210094

出　　处：《南京理工大学学报》2001年第2期205-209,共5页Journal of Nanjing University of Science and Technology

摘　　要：该文以城市生活污水的污泥脱水效果为判据 ,用烧杯絮凝法考察了自制PDA样品和市售的几种用于污泥脱水的具有不同阳离子结构的阳离子聚丙烯酰胺类絮凝剂的污泥脱水性能。研究结果表明 ,各种阳离子絮凝剂量的最佳使用范围一般在 5 0～ 80mg/L ,上清液COD去除率达到 78%以上 ,透过率达到 90 %以上。与市售几种不同阳离子结构的高分子絮凝剂相比 ,自制PDA样品的综合应用性能较好 ,具有良好的实用价值。The flocculating properities of cationic copolymer Poly DMDAAC AM(PDA) and several commercial cationic polyacrylamide with different cationic structures were tested for sludge dewatering in processing municipal sewage. The results show that each cationic flocculant has optimal dosage range, generally from 50 mg/L to 80 mg/L. COD removal efficiency of the tested water can reach 78 % or more, the transmittancy can reach 90 % or more. Compared with cationic flocculants with different cationic structures, the copolymer PDA prepared is of high value in practice.

关 键 词：阳离子絮凝剂 污泥脱水 结构 性能 城市污水处理 

分 类 号：X703.5[环境科学与工程—环境工程] X505