膜科学与技术

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Study on the Fouling Propensity of Effluent from the MBR System for the Electronics Wastewater with High Salinity

Authors： Han Yongping1, Zhang Yuan1, Li Keyi1, Liu Xiaoyan1、XiaoYan2, Wang Xiaolin2

Units： 1. Beijing Key Laboratory of the Resource Utilization of Biomass Waste, Biochemical Engineering College, Beijing Union University, Beijing 100023 2. Beijing Key Laboratory of Membrane Materials and Engineering, Department of Chemical Engineering, Tsinghua University, Beijing 100084

KeyWords： Electronics Wastewater, MBR, RO, Membrane Fouling

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2016,36(5):81-86

Abstract：

To the electronics wastewater with high salinity, the fouling propensity of effluent from the MBR system plays an important role for the design and long-term operational sustainability of the MBR+RO system. In this text, the effluent quality, settling performance and RO membrane fouling were researched with EEM and SEM-EDS. The results showed that there were a few organic matters with a strong adhesion in the effluent. The metal ions in the effluent not only had a complexation reaction with the macromolecules humus acid and protein, but also with silicon colloid. It caused a compacts structure fouling layer on the RO membrane surface. But the organic matters and most of metal ions could form settling of flocs to be removed from the effluent by improving pH of the effluent to 10, which would relieve the membrane fouling. In addition, the removal of metal ions in the fouling layer was critical for enhancing the cleaning efficiency of RO membrane.

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AuthorIntro：

第一作者简介：韩永萍（1971.6），女，山东曹县，博士，副教授，主要从事膜科学技术的应用与教学研究，E-mail:hypyyt@163.com

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