文章摘要：
混凝处理是给水排水处理中最常采用的一种水处理方法，而混凝处理的关键是混凝剂的选择。混凝剂的研制及其混凝特性研究，对于新型混凝剂的研究开发和水处理技术的发展，具有重要的实际意义。聚合氯化铝(PAC)[1~3]和聚合硫酸铁(PFS)[4,5]等无机高分子混凝剂的研制和应用，大大促进了混凝剂的研究和混凝技术的发展。但铝盐混凝剂残留铝的环境效应[6]、铁盐混凝剂的腐蚀性以及它们在处理低温低浊水时所遇到的困难，向人们提出了新的问题。20世纪90年代之后聚硅酸盐类混凝剂的研制成功[7,9]，克服了以往单纯铝、铁盐类混凝剂的缺点，使无机高分子混凝剂的研......
R. Science[J], 1973, 180: 511.
[7] Haase D, Spiyatos N. US Patent 4877597[P], 1989.
[8] Hasegawa T, Hashimeto K, Onitsuka T. Water Sci. Tech.[J]., 1991, 23(7): 1713
[9] LI Ming-yu(李明玉),CHEN Wei-hong(陈伟红), TANG Qi-hong(唐启红), et al. Technology of Water Treatment(水处理技术)[J], 2001,27(4):207
[10] CHEN Wei-hong(陈伟红), LI Ming-yu(李明玉), TANG Qi-hong(唐启红), et al. Chemical Research (化学研究)[J], 2000,11(4):28
[11] LUAN Zhao-kun(栾兆坤), QU Jiu-hui(屈久辉), TANG Hong-xiao(汤鸿霄). Environ. Chem.(环境化学) [J], 1997,16(6):506
[12] LI Ming-yu(李明玉), CHEN Wei-hong(陈伟红), DU Hai-kuan(杜海宽), et al. Water and Wastewater(给水排水) [J], 2000, 26(11):16
[13] AI Zhi-ping(艾子萍), GAO Bao-yu(高宝玉). Environ. Chem.(环境化学)[J],1994,13(2): 119
[14] CHI Yun-xiang(慈云祥), ZHOU Tian-zhe(周天泽). Coordination Compound in Analytical Chemistry (分析化学中的配位化合物)[M]. Beijing(北京):Beijing university Press(北京大学出版社), 1986:116
Coagulation Characteristic and Influencing
Factor of Polyferrous Sulfate Silicate
LI Ming-Yu
(Department of Environmental Engineering, Jinan University, Guangzhou 510630)
Abstract The coagulant of 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 were investigated. The coagulate sedimentation process of PFSS was researched by an on-line operation system of spectrophotometer and function recording instrument. The experimental results show that the coagulation performance of PFSS was strengthened with the increasing of the mole ratio of SiO2 to Fe and the temperature of water. Compared with ferrous sulfate, PFSS can be used in a wide pH range, and the flocculation and sedimentation performance of PFSS are higher than ferrous sulfate. When the mole ratio of SiO2 to Fe was changed from 1:1 to 1:2, the turbidity of water is 20NTU, and the mass concentration of PFSS is 0.75mg/L, the treated water turbidity can be decreased to 2NTU under the condition of pH > 7.
Keywords coagulant, polyferrous sulfate silicate, ferrous sulfate, polyferric sulfate, water treatment
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