| 微涡旋絮凝-逆流气浮-纳滤集成工艺去除水中腐殖酸的研究--以聚合氯化铝(PACl)为絮凝剂 |
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| 引用本文： | 娄敏,王毅力,刘杰,廖柏寒.微涡旋絮凝-逆流气浮-纳滤集成工艺去除水中腐殖酸的研究--以聚合氯化铝(PACl)为絮凝剂[J].环境科学学报,2005,25(9):1156-1163. |
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| 作者姓名： | 娄敏 王毅力 刘杰 廖柏寒 |
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| 作者单位： | 湖南农业大学资源与环境学院环境科学与工程系,湖南,410128;北京林业大学资源与环境学院环境科学学科,省部共建森林培育与保护教育部重点实验室,北京,100083 |
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| 基金项目： | 国家自然科学基金资助项目（No.50178009,20407004）,霍英东青年教师基金资助项目（No.91078） |
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| 摘 要： | 研究了微涡旋絮凝-逆流气浮-纳滤集成工艺去除水中腐殖酸的工艺特征和效果.试验结果表明,微涡旋絮凝-逆流气浮工艺去除水中腐殖酸时,在最佳投药点(PACl),出水水质符合纳滤系统预处理单元的要求,而且该工艺需要PACl絮凝剂的量较低.该预处理系统与纳滤系统组合的集成工艺可以使水中的腐殖酸浓度大大降低,且含TQ56-36FC型纳滤膜的流程1比含M-N1812A型纳滤膜的流程2效果好.前者出水的TOC值可达0.28～0.45mg·L-1,CODMn值为0.47～0.8mg·L-1,UV254nm值为0～0.0033,且有95%以上的脱盐率;后者出水的TOC值为0.52～1.25mg·L-1,CODMn值为0.66～1.0 mg·L-1,UV254nm值为0.008-0.012,脱盐率很低.另外,尽管保安过滤器/活性炭预处理有利于纳滤膜出水水质的提高,但活性炭柱与纳滤膜能去除的有机物种类有些重合,活性炭柱的存在也降低了纳滤膜对有机物的去除率.水中颗粒物的粒度分布表明,原水、絮凝后和气浮出水中颗粒物粒度分布的中位直径(d50)分别为5～6μm、10～14μm和8～13 μm.经过保安过滤器或保安过滤器/活性炭柱,水样中的颗粒物的d50为0到几个μm.经过纳滤膜后出水无颗粒物.
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| 关 键 词： | 微涡旋絮凝-逆流气浮-纳滤集成工艺 腐殖酸 聚合氯化铝(PAC1) 工艺特征 |
| 文章编号： | 0253-2438(2005)09-1156-08 |
| 收稿时间： | 03 15 2005 12:00AM |
| 修稿时间： | 07 1 2005 12:00AM |
Removing humic acid in water by the integrated process of micro-eddy flocculation (MEF)-counter current dissolved air flotation ( CCDAF )-nanofiltration ( NF ),PACl as flocculant |
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| LOU Min,WANG Yili,LIU Jie and LIAO Bohan.Removing humic acid in water by the integrated process of micro-eddy flocculation (MEF)-counter current dissolved air flotation ( CCDAF )-nanofiltration ( NF ),PACl as flocculant[J].Acta Scientiae Circumstantiae,2005,25(9):1156-1163. |
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| Authors: | LOU Min WANG Yili LIU Jie and LIAO Bohan |
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| Institution: | Department of Environmental Science and Engineering, College of Nature Resource and Environment, Hunan Agriculture University, Hunan 410128,Environmental Science, College of Nature Resource and Environment, The Key Laboratory for Silviculture and Conservation of Ministry of Education and Beijing, Beijing Forestry University, Beijing 100083,Environmental Science, College of Nature Resource and Environment, The Key Laboratory for Silviculture and Conservation of Ministry of Education and Beijing, Beijing Forestry University, Beijing 100083 and Department of Environmental Science and Engineering, College of Nature Resource and Environment, Hunan Agriculture University, Hunan 410128; |
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| Abstract: | |
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| Keywords: | micro-eddy flocculation(MEF)-counter current dissolved air flotation(CCDAF)-nanofiltration(NF) integrated process humic acid (HA) polymeric aluminum chloride(PACl) process characteristic |
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