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《Journal of Southwest Jiaotong University》 2010-02
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Characteristics of Heavy Metals in Semi-aerobic Landfill Leachate

YANG Qiaoyan,LIU Dan,LI Qibin, ZHA Kun(School of Environmental Science and Engineering,Southwest Jiaotong University,Chengdu 610031,China)  
To raise the removal rates of heavy metals in leachate,pilot-scale experiments of semi-aerobic landfill were carried out,the factors influencing the characteristics of heavy metals in semi-aerobic landfill leachate,such as pH value,ammonia nitrogen and dissolved oxygen(DO),were investigated.The results show that pH value and DO play an important role in the attenuation of heavy metals.When pH value is small,the concentration of heavy metals is great.The influence of DO is decided mainly by the states of heavy metals in waste.After 250 d,the removal rates of Cr,Ni and Pb are 76.5%,94.3% and 91.4% respectively.
【CateGory Index】: X703
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