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Study on the characterization of raw leachate in Laogang landfill

Lou Ziyang, Ou Yuanyang, Zhao Youcai,et al. The State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092  
The colloidal particles present in the raw leachate sampled from the Laogang landfill compartment under placement operation in March 2003 are gradiently separated by a series of membranes with varied porosity. COD\-\{Cr\}, ammonia\|N, conductivity, pH, TOC, IC, TC, FS(fixed solid), TS, colourity, turbidity in the leachate before and after gradient separation by the membrane are determined and quantitatively co\|related to the membrane porosity. It is found that the values of the parameters, such as COD\-\{Cr\}, ammonia\|N, TOC, IC, TC, FS, TS, colourity, turbidity decreased after membrane separation, which indicate that the dissolved fraction have a significant impact on the contamination of the raw leacheate, while conductivity and pH increased at first and then decreased.
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