Decolorization and mechanism of Poly-aluminum(Ⅲ)-magnesium(Ⅱ)-sulfate for secondary effluent treatment of leachate

摘要：

Poly-aluminum(III)-magnesium(II)-sulfate (PMA) was prepared, and performance of it for color removal from secondary effluent of landfill leachate was evaluated here. The decolorization mechanism was discussed as well. The results indicated that decolorization performance of poly-aluminum(III)-magnesium(II)-sulfate for secondary effluent treatment was better than those of traditional coagulants, with color removal rate above 90%. The flocculation mechanism of PMA was mainly charge neutralization and co-precipitation netting. Charge neutralization mainly happened when at low dose. However, flocculation behaviors were different along with different pH of wastewater when at high dose, namely, charge neutralization happened mainly at low pH and co-precipitation netting at high pH, both of them happened at relative neutral solution.

关键词： landfill leachate secondary effluent poly-aluminum(III)-magnesium(II)-sulfate color removal flocculation mechanism

作者: Gu Qingbao Sang Yimin Sun Tichang Li Fasheng

作者单位: Department of Soil Pollution Control, Chinese Research Academy of Environmental Science, Beijing 100 College of Civil and Environmental Engineering, University of Science and Technology Beijing, Beijin

会议类型: 国际会议

会议名称: The 3rd International Conference on Waste Management and Technology(第三届固体废物管理与技术国际研讨会)

会议地点: 北京

会议语种:英文

页码: 516-521

在线出版日期: 2008-11-05（万方平台首次上网日期，不代表论文的发表时间）