PAC、PFS对洗毛废水絮凝效果及作用机理的比较
Comparison of the flocculation effect between PAC and PFS on the wool scouring e ffluent treatment and their action mechanisms
Online published: 2010-10-01
王栋, 赵书平, 林海英 . PAC、PFS对洗毛废水絮凝效果及作用机理的比较[J]. 工业水处理, 2005 , 25(4) : 22 -25 . DOI: 10.11894/1005-829x.2005.25(4).22
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.
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