| pH对钢铁废水再生过程中CMF系统的影响 |
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| 引用本文： | 孙凯,许丹宇,唐运平,石岩,侯霙. pH对钢铁废水再生过程中CMF系统的影响[J]. 环境工程学报, 2012, 6(5): 1419-1424 |
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| 作者姓名： | 孙凯 许丹宇 唐运平 石岩 侯霙 |
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| 作者单位： | 1. 天津市环境保护科学研究院,天津300191／天津市联合环保工程设计有限公司,天津300191
2. 天津市环境保护科学研究院,天津,300191 |
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| 基金项目： | 国家“水体污染控制与治理”科技重大专项（2008ZX07314-001） |
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| 摘 要： | 通过中试实验研究了钢铁废水再生过程中pH变化对微滤系统性能的影响。结果表明,进水pH的升高增加了微滤膜对UV254、Ca2+和总铁的去除,同时引起了有机物以及无机沉淀物在膜面的吸附。铁锰无机沉淀物在膜面的吸附和对膜孔的堵塞是引起膜污染的主要因素。降低pH有助于控制无机沉淀在膜面和膜孔内的形成,抑制膜污染的形成。
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| 关 键 词： | 钢铁废水 微滤膜 pH 膜污染 |
Impact of pH on CMF treatment and reuse of iron and steel wastewater |
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| Sun Kai,Xu Danyu,Tang Yunping,Shi Yan and Hou Ying. Impact of pH on CMF treatment and reuse of iron and steel wastewater[J]. Techniques and Equipment for Environmental Pollution Control, 2012, 6(5): 1419-1424 |
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| Authors: | Sun Kai Xu Danyu Tang Yunping Shi Yan Hou Ying |
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| Affiliation: | 1,2(1.Tianjin Academy of Environmental Science,Tianjin 300191,China; 2.Tianjin United Environmental Protection Engineering Design Co.Ltd.,Tianjin 300191,China) |
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| Abstract: | The performance of continuous micro-filtration membrane system under variation of pH conditions was studied through the steel wastewater reuse process in the pilot test.The results showed that the removal efficiency of UV254,Ca2+ and total iron content increased with the improvement of pH,at the same time,it caused the adsorption of organic and inorganic sediments on membrane surface.The main factors of membrane fouling were the long-term accumulation of inorganic sediments of iron and manganese.The decline of pH would control the formation of inorganic sedimentation on membrane surface,and reduce the rate of membrane fouling. |
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| Keywords: | iron and steel wastewater micro-filtration membrane pH membrane fouling |
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