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Removal of Reactive Black W-2N from synthetic wastewater by an integrated membrane coagulation reactor

机译：集成膜混凝反应器从合成废水中去除活性黑W-2N

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Herein, a new integrated membrane coagulation reactor (IMCR) was developed to effectively treat synthetic wastewater containing Reactive Black W-2N. The optimal operation conditions were determined as follows: influent pH 5.5, polyferric sulfate (PFS) dose 1.2 mmol/L, and hydraulic retention time 3 h, under which a nearly complete decolorization was achieved and chemical oxygen demand removal reached 92%. Membrane fouling experienced three phases as reflected by different increment rates of the trans-membrane pressure. A high PFS dose aggravated the membrane fouling. The fractal dimension value of flocs increased with the increasing coagulant dose. In comparison to the control experiment, ferrate addition significantly increased the mean size and porosity of the floc particles formed. Because ferrate addition could reduce the trans-membrane pressure increment rate, the steady-state performance of the IMCR process was improved. (C) 2014 Elsevier B.V. All rights reserved.
机译：本文中，开发了一种新的集成膜混凝反应器（IMCR），以有效处理含有活性黑W-2N的合成废水。确定最佳操作条件如下：进水pH 5.5，聚硫酸铁（PFS）剂量1.2 mmol / L，水力停留时间3 h，在此条件下，脱色几乎完全完成，化学需氧量去除率达到92％。跨膜压力的不同增加速率反映了膜污染经历了三个阶段。高PFS剂量加重了膜的结垢。絮凝物的分形维数值随着凝结剂剂量的增加而增加。与对照实验相比，高铁酸盐的加入显着增加了形成的絮凝颗粒的平均尺寸和孔隙率。由于添加高铁酸盐可以降低跨膜压力增加速率，因此提高了IMCR工艺的稳态性能。 （C）2014 Elsevier B.V.保留所有权利。

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