摘要
作者采用PAC(聚合氯化铝)/PAM(阴离子聚丙烯酰胺)和PFS(聚合硫酸铁)/PAM两种复合絮凝剂分别进行了洗毛废水的絮凝实验研究,同时跟踪了过程中的粒径变化。实验表明:(1)PAC不仅能去除废水中的乳化胶体,还能结合游离的LAS,PFS只能去除乳化胶体;(2)PAC与废水胶体生成一次性絮体的粒径约30μm,过量的PFS却能导致絮体的解体;(3)对于LAS类洗涤废水,PAC/PAM复配絮凝效果较好,LAS去除率高达97%,COD去除率可达90%以上。
For better wool scouring effluent treatment, the effect and efficiency of two inorganic coagulants: PAC(polyaluminium chloride) and PFS(polyferric sulf ate), followed by adding PAM(polyacrylamide), have been investigated, calculated and compared using parameters such as concentration of LAS, COD, colloid or agg regates size. Results show: (1) PAC can remove emulsificated colloid and free LA S more completely. PFS may coagulate colloid mainly by the electrical double-lay er compression. (2)The aggregates from PAC with effluent colloid is meas- ured to be 30 μm in size with narrower size distribution. PFS shows some disagg regating effect on aggregates when the dosage is increased beyond some point. (3 )When PAC/PAM is used, LAS removal rate is 97% and COD removal rate is 90% respe ctively. It suggests that coagulants with aluminium may be more effective on was tewater with LAS.
出处
《工业水处理》
CAS
CSCD
北大核心
2005年第4期22-25,共4页
Industrial Water Treatment
关键词
洗毛废水
聚合氯化铝
聚合硫酸铁
wool scouring effluent
polyaluminium chloride
polyferric sulfate
