刘国昌;冯世业;李浩;周从章;黄振华;李雪梅;吕经烈;

• 1:国家海洋局天津海水淡化与综合利用研究所
• 2:广东普润环保科技有限公司

摘要(Abstract)：

为实现电镀废水中6价铬离子(Cr(Ⅵ))回用,将纳滤技术与离子交换技术耦合,建立了1 m3/h中试试验装置。含Cr(Ⅵ)废水经离子交换纤维吸附处理,出水Cr(Ⅵ)质量浓度≤0.08 mg/L,可达标排放;将离子交换纤维吸附饱和后再生,获得5 000 mg/L以上Cr(Ⅵ)浓缩液,同时含有Cl-。采用纳滤膜处理该浓缩液,将Cr(Ⅵ)与Cl-分离。对比研究了运行压力和离子质量浓度对分离效果的影响,由此筛选较适宜膜产品。结果表明:进水Cr(Ⅵ)质量浓度为3 680mg/L,Cl-质量浓度为16 049 mg/L,运行压力为0.7 MPa,Cr(Ⅵ)截留率为80%,Cl-完全透过;溶液p H=8和p H=11时纳滤膜对Cr(Ⅵ)、Cl-分离效果无显著差异;经过60 d试验纳滤膜的脱盐性能无衰减。将离子交换与纳滤技术耦合,连续运行,能获得Cr(Ⅵ)质量浓度为3 200 mg/L、Cl-质量浓度为20 mg/L的浓缩液。研究表明,集成工艺整体可行,具有潜在应用价值。

关键词(KeyWords)： 环境工程学;分离过程;离子交换纤维;电镀废水;铬离子;纳滤膜

Abstract:

Keywords:

基金项目(Foundation): 企业科研开发项目(201209001);; 国家海洋局青年海洋科学基金重点项目(2013502)

作者(Authors): 刘国昌;冯世业;李浩;周从章;黄振华;李雪梅;吕经烈;

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