摘要
考察了聚合氯化铝、壳聚糖以及复合絮凝剂对活性污泥的调理作用,结果表明,它们都有助于改善活性污泥的脱水,通过比较污泥比阻的变化,观察试验中的矾花生成现象,表明聚合氯化铝/壳聚糖复合絮凝剂在污泥调理中不仅效果明显,污泥比阻最先达到低点3×1012m·kg-1,滤速较快,而且有助于减少金属污泥的生成,是较佳的调理剂.
The effect of the dosage of flocculants on activated sludge dewatering is analyzed through the determination of sludge specific resistance to filtration. Sludge dewatering behaviors conditioned on polymeric aluminum chloride （PAC）, chitosan （CTS） and composite flocculants have been compared. The results show all the conditioning agent have help to sludge dewatering. Compared with PAC, CTS and PAC/CTS composite coagulant, the optimum coagulant with its optimum dosage is obtained. PAC/CTS can greatly reduce the sludge specific resistance and improves the sludge dewatering performance largely while the clarity of the fihrate was higher.
出处
《环境化学》
CAS
CSCD
北大核心
2007年第1期42-45,共4页
Environmental Chemistry
关键词
污泥
调理
壳聚糖
聚合氯化铝.
actived sludge, conditioning, chitosan, polymeric alaminum chloride.
