Combined Reduction/Precipitation, Chemical Oxidation, and Biological Aerated Filter Processes for Treatment of Electroplating Wastewater

被引：18

作者：

Shi, Huichun ^{[1
,2
]}

Li, Jijun ^{[1
]}

Shi, Dewei ^{[3
]}

Shi, Huijing ^{[4
]}

Feng, Bin ^{[2
]}

Li, Wei ^{[2
]}

Bai, Yongping ^{[2
]}

Zhao, Jun ^{[2
]}

He, Aihong ^{[5
]}

机构：

[1] Lanzhou Univ, Coll Earth & Environm Sci, Lanzhou 730000, Gansu, Peoples R China

[2] Northwest Normal Univ, Coll Geog & Environm Sci, Lanzhou, Gansu, Peoples R China

[3] Ningxia Vocat & Tech Coll Minor, Wuzhong, Ningxia, Peoples R China

[4] CPC, Dept Econ, Yinchuan Municipal Party Coll, Yinchuan, Ningxia, Peoples R China

[5] Northwest Univ Nationalities, Sch Econ, Lanzhou, Gansu, Peoples R China

来源：

SEPARATION SCIENCE AND TECHNOLOGY | 2015年 / 50卷 / 15期

基金：

中国国家自然科学基金;

关键词：

cyanide; heavy metals; reduction; precipitation; biological process; HYDROGEN-PEROXIDE; CYANIDE; REMOVAL; REDUCTION; CHROMIUM; IRON; PRECIPITATION; HYPOCHLORITE; FE(II); SYSTEM;

D O I：

10.1080/01496395.2015.1049365

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this work, a combination process was developed in lab-scale for the purpose of removing pollutants in electroplating wastewater with high cyanide and metal loadings. Most of heavy metal ions were removed by Fe2+ reduction (for Cr6+) and subsequent precipitation (for Cr3+, Cu2+, and Ni2+ ions), and cyanide was efficiently removed by the formation of insoluble complex compounds with Fe2+ ions. During the following chemical oxidation process, the residual cyanide was mainly transformed to low-toxic cyanate, and Cu2+ and Ni2+ ions were released due to degradation of organic compounds and then removed by precipitation.

引用

页码：2303 / 2310

页数：8

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