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2015•Environmental Pollution & ControlRequires access

Study on pretreatment of landfill leachate using MAP-Fenton process

Wang Xiaofe

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Abstract

MAP-Fenton process was used to study the landfill leachate pretreatment.The removal rate of ammonia nitrogen and COD were analyzed.The optimal conditions were obtained according to the single factor and orthogonal tests.The optimal conditions of MAP were pH=9.5,Mg2+∶NH+4∶PO3-4(molar ratio)=1.3∶1.0∶1.3and reaction time of 25min;the optimal conditions of Fenton were pH=3.5,30% H2O2 dosage 20 mL/L,H2O2∶FeSO4·7H2O(molar ratio)=5∶1and reaction time of 2.0h.Under the above optimal conditions the removal rate of ammonia nitrogen and COD were 93.89% and 90.12%,respectively.

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MAP-Fenton process was used to study the landfill leachate pretreatment.The removal rate of ammonia nitrogen and COD were analyzed.The optimal conditions were obtained according to the single factor and orthogonal tests.The optimal conditions of MAP were pH=9.5,Mg2+∶NH+4∶PO3-4(molar ratio)=1.3∶1.0∶1.3and reaction time of 25min;the optimal conditions of Fenton were pH=3.5,30% H2O2 dosage 20 mL/L,H2O2∶FeSO4·7H2O(molar ratio)=5∶1and reaction time of 2.0h.Under the above optimal conditions the removal rate of ammonia nitrogen and COD were 93.89% and 90.12%,respectively.

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Available abstract

MAP-Fenton process was used to study the landfill leachate pretreatment.The removal rate of ammonia nitrogen and COD were analyzed.The optimal conditions were obtained according to the single factor and orthogonal tests.The optimal conditions of MAP were pH=9.5,Mg2+∶NH+4∶PO3-4(molar ratio)=1.3∶1.0∶1.3and reaction time of 25min;the optimal conditions of Fenton were pH=3.5,30% H2O2 dosage 20 mL/L,H2O2∶FeSO4·7H2O(molar ratio)=5∶1and reaction time of 2.0h.Under the above optimal conditions the removal rate of ammonia nitrogen and COD were 93.89% and 90.12%,respectively.

Key concepts: Leachate, Molar ratio, Chemistry, Ammonia, Nitrogen, Process (computing), Nuclear chemistry, Environmental chemistry

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