Journal of South China University of Technology (Natural Science Edition) ›› 2005, Vol. 33 ›› Issue (6): 63-67.

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Analysis of the Removal of Heavy Metals in Landfill Leachate by Biological Treatment

Yang Zhi-quan  Zhou Shao-qi   

  1. College of Environmental Science and Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong, China
  • Received:2004-09-30 Online:2005-06-25 Published:2005-06-25
  • Contact: 杨志泉(1978-)，男，硕上，助教，主要从事环境生物技术及固废资源化方面的研究 E-mail:zqyang@scut.edu.cn
  • About author:杨志泉(1978-)，男，硕上，助教，主要从事环境生物技术及固废资源化方面的研究
  • Supported by:

    广东省科技攻关项目(2002C32108)；广东省重点科技攻关项目(302-B25570)；广州市重点科技攻关项目(98-K-005-01)

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Abstract:

In order to efi ciently treat landfill leachate，a sort of efluent containing complex pollutants,ICP -MS analysis was used to measure the heavy metals contained in the landfill leachate generated from Datianshan landrill in Guangzhou．46 kinds of heavy metals in the landfill leachate were detected,1 0 of which belong to the environ.mental priority pollutants considered by Environmental Protection Agency in USA. In these 1 0 priority pollutants,the mass concentrations of Cr,Ni,Zn,Cu and Pb are comparatively high,especially those of Cr and Zn.which are more than 1 00 μg/L. Moreover,a set of simultaneous aerobic.anaerobic bioreactor was used t()treat the landrill  leachate.The results demonstrate that 10 of the 46 pollutants have a removal rate of more than 70%, 12 of 50% ~69%,and the removal rates of Cr and Zn all exceed 60%.In addition, in the ten priority pollutants.the removal
rates of Cr,Zn,As,Pb and Se account for more than 60% .

Key words: landfill leachate, heavy metal, biological treatment, simultaneous aerobic-anaerobic treatment, distri-bution