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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:

期数:

2011年02期

页码:

60-62

栏目:

环境科学与工程

出版日期:

2011-03-30

文章信息/Info

Title:

Treatment of Metallurgical Waste Water with High-Salt by Chemical Precipitation-Electrolysis

作者:

冯俊生¹; 翁 平²; 陆 全¹

1.常州大学 环境与安全工程学院,江苏 常州 213164; 2.常州市环境保护产业协会

Author(s):

FENG Jun-sheng¹; WEN Ping²; LU Quan¹

1.School of Environmental and Safety Engineering,Changzhou University, Changzhou 213164,China; 2.Industrial Association of Environmental Protection,Changzhou

关键词:

沉淀;  电解;  冶金废水

Keywords:

precipitation;  electrolysis;  metallurgical waste water

分类号:

X 703

文献标志码:

A

摘要:

以CaCl₂作为沉淀剂,处理冶金萃取废水脱除SO^2-₄离子,当原水ρ(SO^2-₄)为103.0 g/L,投加ρ(CaCl₂)为82.18 g/L,出水ρ(SO^2-₄)最低880 mg/L,去除率在99.15%; 回收CaSO₄纯度95%-98%,经沉淀处理后的上清液在pH=11.2,极板间距为7 mm,电解时间60 min,获得氯离子质量浓度为3 200 mg/L,氢氧根为40 g/L的回用水,完全满足了回用要求。

Abstract:

Using calcium chloride as the precipitating agent, sulfate radical can be removed from waste water of metallurgical extraction. When theconcentration of sulfate radical in the raw water was 103.0 g/L and calcium chloride added was 82.18 g/L, the minimum concentration of sulfateradical in effluent reached 88 mg/L,99.15% removal rate and 95%-98% purity of calcium sulfate recovered was also completed. At the same time,supernatantpH after precipitation treatment was 11.2,the distance of polar board 7 mm,and electrolytic time 60 min.Finally, the concentration of chloridion and hydroxy radical respectively were 3 200 mg/L,40 g/L,which satisfied the demand of reuse.

备注/Memo

备注/Memo:

作者简介:冯俊生(1963-),男,内蒙古呼和浩特人,副教授。

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更新日期/Last Update: 2011-03-30