活化硅酸特性与生产性应用研究
收稿日期: 2004-02-12
网络出版日期: 2010-10-01
基金资助
国家高技术研究发展计划:太湖流域安全饮用水保障技术项目(2002AA601130)
Research on the activated silica characteristic and its full-scale application
Received date: 2004-02-12
Online published: 2010-10-01
张东, 乐林生, 陆善伦 . 活化硅酸特性与生产性应用研究[J]. 工业水处理, 2004 , 24(10) : 42 -44 . DOI: 10.11894/1005-829x.2004.24(10).42
The closer pH approaches to neutral, the more rapid silicic-acid gelatin rate becomes, and the higher alkalinity or acidity is, the relatively slower silicic-acid gelatin rate becomes. Monomer and low polymer turn into higher polymer during the activated process, and high polymer is the predominant form of silica in activated products, and its amount is above 80%. Activated products molecular weight is 9.3 × 103 by gelatin chromatogram and it is a kind of particulate anionic inorganic polymer, and its optimal dose is about 1 mg/L SiO2 in the Huangpu River raw water treatment. It can reduce averagely about 28.2% of coagulant dose and maintain stable turbidity of settled basin outlet.
[1] Baylis J R.Silicates as aid to coagulate[J].J.AWWA.,1937,29(9):1355-1396
[2] 戴安邦,江龙.硅酸及其盐的研究(I)--硅酸聚合的速度和机制[J].化学学报,1957,23(1):91-98
[3] Iler R K. The chemistry of silica[M]. New York, 1979. 97 - 102
[4] Weres O, Yee A, Tsao L. Kinetics of polymerization[M]. U. S.Department of energy, 1980. 465-467
/
〈 | 〉 |