Abstract:

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

摘要：

对新型无机高分子混凝剂聚合硫酸铁的制备方法进行了评述。指出了由硫酸亚铁和硫铁矿烧渣等含铁矿 (废 )渣制备聚合硫酸铁的优缺点,对目前聚合硫酸铁生产中存在的问题及发展方向提出了建议。另外,对聚合铁的盐基度对稳定性和混凝性能的影响进行了阐述。在盐基度为 0～ 2 0 %范围内,聚合铁均有较好的混凝效果。该结果与聚合铝有较大的差别。与铝盐混凝剂相比,聚合铁的使用不会对环境造成二次污染,且在某些废水处理中有更好的混凝效果,故今后将有广阔的发展前景。

关键词: 聚合硫酸铁, 混凝剂, 硫酸亚铁, 硫铁矿烧渣

CLC Number: 

• X751

• TU528.042.7