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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. shu

Coagulation Characteristic and Influencing Factor of Polyferrous Sulfate Silicate

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a Department of Environmental Engineering, Jinan University, Guangzhou 510632;
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b Department of Chemistry, Huanan Normal University, Guangzhou;
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c Department of Fire Control Engineering, The Peoele's Armed Police College of China, Langfang

Corresponding author: LI Ming-Yua,
Received Date: 30 June 2003
Available Online: 28 September 2003
Fund Project:

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.
- coagulant,
- polyferrous sulfate silicate,
- ferrous sulfate,
- polyferric sulfate,
- water treatment
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