| 基于在线混凝-超滤组合工艺的微污染地表水处理 |
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| 引用本文： | 崔俊华,王培宁,李凯,张建辉,李圭白.基于在线混凝-超滤组合工艺的微污染地表水处理[J].河北煤炭建筑工程学院学报,2011(1):52-56,63. |
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| 作者姓名： | 崔俊华 王培宁 李凯 张建辉 李圭白 |
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| 作者单位： | [1]河北工程大学城市建设学院,河北邯郸056038 [2]哈尔滨工业大学市政环境工程学院,黑龙江哈尔滨150090 |
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| 基金项目： | 国家科技重大专项（2008ZX07423_002） |
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| 摘 要： | 以微污染地表水为原水,采用不同混凝剂投加量的3组流程和直接超滤工艺进行对比试验,考察了在线混凝-超滤组合工艺去除污染物的效果和膜污染情况。经过150h的连续运行,组合工艺出水浊度稳定在0.1NTU以下,CODMn平均去除率为33%,水质优于直接超滤工艺。试验中组合工艺较直接超滤工艺跨膜压差增长缓慢,膜污染经化学清洗后可基本去除,表明在线混凝可以延缓膜污染的进行。在试验中提高混凝剂投加量可以略微提高超滤效果,但综合考虑运行成本,混凝剂的最优投量为30mg/L。
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| 关 键 词： | 超滤 在线混凝 跨膜压差 化学清洗 |
Treatment of slightly polluted water using inline coagu-flocculation-UF combined process |
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| Authors: | CUI Jun-hua WANG Pei-ning LI Kai ZHANG Jian-hui LI Gui-bai |
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| Affiliation: | 1.School of Urban Construction Engineering,Hebei University of Engineering, Hebei Handan 056005,China;2.School of Municipal ＆ Environmental Engineering,Harbin Institute of Technology,Heilongjiang Harbin 150090,China) |
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| Abstract: | The removal of water pollutants and the pollution of membrane were observed by advanced treatment of ultra filtration（UF） and inline coagu-flocculation-UF（ICUF） with different amount of coagulant and slightly polluted water as raw water.It was shown that the effluent quality of combination process,with its turbidity below 0.1 NTU and the CODMn average removal rate 33%,was better than UF＇s after 150h operation.It was also shown that the inline coagu-flocculation could retard membrane pollution since the growth of transmembrane pressure in ICUF was more slowly than UF＇s and the membrane pollution in ICUF could be removed.The UF effect would be improved with the amount of coagulant increased,but if the costs were considered,the optimal coagulant dosage was 30 mg/L. |
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| Keywords: | ultrafiltration in-line coagu-flocculation transmembrane pressure chemical cleaning |
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