The research and development of inorganic polymer coagulant polyf erric sulfate
Received date: 2000-01-02
Online published: 2010-10-01
This paper gives a review of the preparation method of inorganic high polymer coagulant polyferric sulfate. The present situation of the studies and the production of PFS is discussed. It points out the merit and the shortc oming of the preparation methods of PFS with ferrous sulfate, pyrite cinder and ot her slags containing iron. Some suggestions about present problems and developm ent direction in the production of PFS have been put forward. In other hand,th e influence of polyferric sulfate basicity on stability and coagulating effect i s reported. The coagulating effects of polyferric sulfate with the basicity from 0 to 20%. The result is different from polyaluminium chloride. Comparing polyfe rric with polyaluminium, there is not secondary pollutant in the application process of polyferric. The coagulating ability of polyferric is higher than polyalumin i um in the treatment of some wastewater. So the application prospect of polyferr ic is very good in the future.
Key words: polyferric sulfate; coagulant; ferrous sulfate; pyrite cinder
LI Mingyu, TANG Qihong, ZHANG Shunli . The research and development of inorganic polymer coagulant polyf erric sulfate[J]. Industrial Water Treatment, 2000 , 20(6) : 1 -3,25 . DOI: 10.11894/1005-829x.2000.20(6).1
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