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《Environmental Science and Management》 2007-12
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Study on the Treatment for restrain Landfill Leachate by Flocculation

Liu Yong1,Huang Qin2,Li Maojie1,Chen Di2(1.Institute of Chemistry and Material Science,Sichuan Normal University,Chengdu 610066,China;2.College of Environmental Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China)  
The semi-aerobic landfill leachate has been treated by flocculation.Using the CODcr removal rate of landfill leachate as the inspection target,the influence of factors such as flocculant,the optimum flocculant's dosage and the most pH value,et al on the treatment result has also been discussed.Base on above study,the optimum treatment condition has been determination.The experiment results show that the ferrous sulfate's flocculation is best.when the dosage of ferrous sulfate whose concentration is 20% is 0.7 mL/100 mL,the pH value is 10,the proportion of adding polyacrylamide(PAM) is 2:1,the CODcr removal rate of landfill leachate can reach 60%,chromaticity removing rate can reach 40%.It can make the CODcr of landfill leachate reduce from 2654.6 mg/L to 977.8 mg/L and be satisfied for the three grade discharge standard.
【Fund】: 四川省教育厅资助自然科学研究项目(2004B009);; 四川师范大学2007年本科生科创项目
【CateGory Index】: X703
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