ZHOURong-zhong,XIEJin-wen,LIPan-rong,et al.Membrane Technology for Heavy Metal Separation from Organic Silicon Production Industry Wastewater[J].China Water & Wastewater,2022,38(13):90-96.
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Membrane Technology for Heavy Metal Separation from Organic Silicon Production Industry Wastewater

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第13期 Page: 90-96 Column: Date of publication: 2022-07-01
Author(s):
ZHOU　Rong-zhong1; 2;  XIE　Jin-wen1; 2;  LI　Pan-rong1; 2;  DAI　Zhen-peng1; 2;  WANG　Jia-qi1; 2;  YI　Jia-lu1; 2;  LI　Wen1; 2
（1. Jiangxi JDL Environmental Protection Co. Ltd.， Nanchang 330000， China； 2. Key Laboratory of Electronic Electroplating Wastewater Treatment and Recycling of Jiangxi Province， Nanchang 330000， China）
Keywords:
membrane separation;  heavy metal wastewater;  organic silicon;  Cu2+;  Zn2+;  recycling
Abstract:
A PVDF hollow fiber membrane with pore size of 0.4 μm was selected to treat organic silicon production wastewater containing copper and zinc under the following conditions: pumping work/stop time of 7 min to 2 min, aeration rate of 70 m3/(m2·h), initial membrane flux of 0.5 m3/(m2·d) and suspended solids concentration less than 20 000 mg/L. The concentrations of Cu2+ and Zn2+ in effluent were 0.20 mg/L and 0.36 mg/L, and the removal efficiencies were 99.80% and 99.07%, respectively. The average copper content in the dry base of condensed sludge reached 17.64%, which exceeded the fourth-grade product standard of Copper Concentrate (YS/T 318-2007) and could be directly recycled to generate economic benefits. The cost of wastewater treatment after cost compensation was 4.60 yuan/m3.
Last Update: 2022-07-01