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Experimental Study on Pretreatment of Refractory-Degraded Landfill Leachate by Fenton Reagent

Wang Qing-ping

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Abstract

The pretreatment of refractory-degraded organics of landfill leachate by Fenton reagent was investigated.The effects of pH value,ratio of H2O2/Fe2 +,Fenton reagent dosage,and reaction time on biodegradability and the removal efficiency of CODCr were studied respectively.The results showed that,when pH value was 3.0～4.0,H2O2/Fe2 + was 6∶1(mass ratio),H2O2 amount was 600 mg·L-1,reaction time was 2 h,the removal efficiency of CODCr hit 75.0%and the BOD5/CODCr raised from 31.9% to 53.6%.It indicated that biodegradability of landfill leachate could be improved effectively by Fenton reagent,while the outlet CODCr loading was decreased obviously.

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What this paper is about

The pretreatment of refractory-degraded organics of landfill leachate by Fenton reagent was investigated.The effects of pH value,ratio of H2O2/Fe2 +,Fenton reagent dosage,and reaction time on biodegradability and the removal efficiency of CODCr were studied respectively.The results showed that,when pH value was 3.0～4.0,H2O2/Fe2 + was 6∶1(mass ratio),H2O2 amount was 600 mg·L-1,reaction time was 2 h,the removal efficiency of CODCr hit 75.0%and the BOD5/CODCr raised from 31.9% to 53.6%.It indicated that biodegradability of landfill leachate could be improved effectively by Fenton reagent,while the outlet CODCr loading was decreased obviously.

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Available abstract

The pretreatment of refractory-degraded organics of landfill leachate by Fenton reagent was investigated.The effects of pH value,ratio of H2O2/Fe2 +,Fenton reagent dosage,and reaction time on biodegradability and the removal efficiency of CODCr were studied respectively.The results showed that,when pH value was 3.0～4.0,H2O2/Fe2 + was 6∶1(mass ratio),H2O2 amount was 600 mg·L-1,reaction time was 2 h,the removal efficiency of CODCr hit 75.0%and the BOD5/CODCr raised from 31.9% to 53.6%.It indicated that biodegradability of landfill leachate could be improved effectively by Fenton reagent,while the outlet CODCr loading was decreased obviously.

Key concepts: Leachate, Reagent, Chemistry, Biodegradation, Fenton's reagent, Refractory (planetary science), Degradation (telecommunications), Environmental chemistry

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Experimental Study on Pretreatment of Refractory-Degraded Landfill Leachate by Fenton Reagent — Research Paper | ScholarLens