Treatment of wastewater effluents from paper-recycling plants by coagulation process and optimization of treatment conditions with response surface methodology

被引：40

作者：

Birjandi N. ^{[1
]}

Younesi H. ^{[1
]}

Bahramifar N. ^{[1
]}

机构：

[1] Department of Environmental Science, Faculty of Natural Resources, Tarbiat Modares University, P.O. Box 46414-356, Noor

来源：

Applied Water Science | 2016年 / 6卷 / 04期

关键词：

Alum; Coagulation; Paper-recycling wastewater; Polyaluminum chloride;

D O I：

10.1007/s13201-014-0231-5

中图分类号：

学科分类号：

摘要：

In the present study, a coagulation process was used to treat paper-recycling wastewater with alum coupled with poly aluminum chloride (PACl) as coagulants. The effect of each four factors, viz. the dosages of alum and PACl, pH and chemical oxygen demand (COD), on the treatment efficiency was investigated. The influence of these four parameters was described using response surface methodology under central composite design. The efficiency of reducing turbidity, COD and the sludge volume index (SVI) were considered the responses. The optimum conditions for high treatment efficiency of paper-recycling wastewater under experimental conditions were reached with numerical optimization of coagulant doses and pH, with 1,550 mg/l alum and 1,314 mg/l PACl and 9.5, respectively, where the values for reduction of 80.02 % in COD, 83.23 % in turbidity, and 140 ml/g in SVI were obtained. © 2014, The Author(s).

引用

页码：339 / 348

页数：9

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