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城市景观水体混凝除藻过程对氮元素协同去除特性初探

焦卫东 刘瑜 陈强 龚春明 曹英兰 罗专溪 魏群山

焦卫东, 刘瑜, 陈强, 龚春明, 曹英兰, 罗专溪, 魏群山. 城市景观水体混凝除藻过程对氮元素协同去除特性初探[J]. 环境科学研究, 2012, 25(8): 897-903.
引用本文: 焦卫东, 刘瑜, 陈强, 龚春明, 曹英兰, 罗专溪, 魏群山. 城市景观水体混凝除藻过程对氮元素协同去除特性初探[J]. 环境科学研究, 2012, 25(8): 897-903.
JIAO Wei-dong, LIU Yu, CHEN Qiang, GONG Chun-ming, CAO Ying-lan, LUO Zhuan-xi, WEI Qun-shan. Removal of Algae and Nitrogen from Urban Landscape Waters by Coagulation Process[J]. Research of Environmental Sciences, 2012, 25(8): 897-903.
Citation: JIAO Wei-dong, LIU Yu, CHEN Qiang, GONG Chun-ming, CAO Ying-lan, LUO Zhuan-xi, WEI Qun-shan. Removal of Algae and Nitrogen from Urban Landscape Waters by Coagulation Process[J]. Research of Environmental Sciences, 2012, 25(8): 897-903.

城市景观水体混凝除藻过程对氮元素协同去除特性初探

基金项目: 国家自然科学基金项目(20807033,41001327);厦门市科技支撑计划项目(3502Z20102001);厦门市科技局项目(3502Z20101010)

Removal of Algae and Nitrogen from Urban Landscape Waters by Coagulation Process

  • 摘要: 以城市景观水体净化为目标,考察混凝除藻同时去除氮元素的特性和影响因素. 结果发现,水体内较高的DOC(溶解性有机质)含量会阻碍藻浊度的去除. 聚合氯化铝(PACl)以及PACl与硫酸铝(Alum)的复合剂(PACl+Alum)对藻浊度的去除效果均相对单独使用PACl或Alum较好,其中PACl+Alum对其他物质(如氮、DOC等)的去除效果也相对单独使用PACl或Alum更佳;在同样的最佳投药量时,低pH条件能获得更好的藻浊度去除率;对氮元素去除的进一步研究发现,DON(溶解性有机氮)的去除特征和过程与TN(总氮)非常一致,表明该水体TN的去除主体上是通过DON的去除实现的;低pH条件同样有利于氮和DOC的去除;但DOC与DON去除的不同步性,说明DOC中的DON成分和性质是非均一性的,是未来可进一步深入研究的重要方向.

     

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出版历程
  • 收稿日期:  2012-02-14
  • 修回日期:  2012-03-09
  • 刊出日期:  2012-08-25

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