Study on the treatment of high silicate containing wastewater by coagulation

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  • School of Environmental Science and Technology, Dalian University of Technology, Dalian 116012, China

Received date: 2002-11-20

  Online published: 2010-10-01

Abstract

The optimal testing conditions of the treatment of high silicate containing wastewater by using inorganic compound coagulants:Ca(OH)2,MgO,MgO and Fe2(SO4)3 have been investigated. It is found that the removal ratio of silicon increases with the increment of the Ca(OH)2. The removal ratio of silicon increases to 98.8% when the mass ratio of Ca(OH)2/SiO32- is increasing to 20-1. Similarly,the removal ratio of silicon increases with the increment of the MgO. It approaches to 64.7% when the mass ratio of MgO/SiO32- increases to 20-1. Keeping the mass ratio of MgO/SiO32- unchangeable,when some Fe2(SO4)3 solution is added, the removal ratio can increase to 82.4%. In addition,it is proved that the optimal conditions of the treatment of high silicate containing wastewater are easily popularized.

Cite this article

Jin Ruofei, Wang Dong, Zhou Jiti, Teng Liman, Jiang Su . Study on the treatment of high silicate containing wastewater by coagulation[J]. Industrial Water Treatment, 2003 , 23(1) : 42 -43,44 . DOI: 10.11894/1005-829x.2003.23(1).42

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