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Selection and Composition of Coagulant for Landfill Leachate Treatment

Yongli Zhang

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Abstract

Using the orthogonal test,toxic and hazardous landfill leachate with high concentration was pretreated by coagulation.Single-component coagulants were screened through comparing their COD removal rate for landfill leachate,the optimum amount of single-components was obtained as follows: 1 250 mg/L(PAC),1 500 mg/L(PFS),50 mg/L(PAM).Two-component and multi-component cross-configuration of three coagulants were studied,the optimal ratio of compound was determined as follows: PAC/ PFS/PAM=1︰1︰1.Experimental results show that the coagulants cross-configuration has better pretreatment effect than single-component.

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What this paper is about

Using the orthogonal test,toxic and hazardous landfill leachate with high concentration was pretreated by coagulation.Single-component coagulants were screened through comparing their COD removal rate for landfill leachate,the optimum amount of single-components was obtained as follows: 1 250 mg/L(PAC),1 500 mg/L(PFS),50 mg/L(PAM).Two-component and multi-component cross-configuration of three coagulants were studied,the optimal ratio of compound was determined as follows: PAC/ PFS/PAM=1︰1︰1.Experimental results show that the coagulants cross-configuration has better pretreatment effect than single-component.

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Available abstract

Using the orthogonal test,toxic and hazardous landfill leachate with high concentration was pretreated by coagulation.Single-component coagulants were screened through comparing their COD removal rate for landfill leachate,the optimum amount of single-components was obtained as follows: 1 250 mg/L(PAC),1 500 mg/L(PFS),50 mg/L(PAM).Two-component and multi-component cross-configuration of three coagulants were studied,the optimal ratio of compound was determined as follows: PAC/ PFS/PAM=1︰1︰1.Experimental results show that the coagulants cross-configuration has better pretreatment effect than single-component.

Key concepts: Leachate, Chemistry, Composition (language), Waste management, Component (thermodynamics), Hazardous waste, Pulp and paper industry, Environmental science

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