Citation:
LI Ming-Yua, LIU Pei-Hong, CHEN Wei-Hong, ZHANG Na, LI Xiu-Yu, LIU Hui-Xuan. Coagulation Characteristic and Influencing Factor of Polyferrous Sulfate Silicate[J]. Chinese Journal of Applied Chemistry,
;2004, 21(4): 396-399.
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The coagulant polyferrous sulfate silicate(PFSS) was prepared from ferrous sulfate and sodium silicate. The influences of the mole ratio of SiO2 to Fe, the mass concentration of PFSS, and the pH and temperature of water on coagulation performance of PFSS have been investigated. The sedimentation process of PFSS was researched by an on-line operation system of spectrophotometer combined with function recording instrument. The results show that the coagulation performance of PFSS was strengthened with the increase of the mole ratio of SiO2 to Fe and the temperature of water. PFSS can be used in a wider pH range, and its flocculation and sedimentation performance are better than that of ferrous sulfate. When the mole ratio of SiO2 to Fe was changed from 1:1 tO2:1, the turbidity of water is 20.5NTU mass concentration of PFSS being 0.75 mg/L. The turbity of treated was decreased to less 2NTU at pH>7.
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