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The Treatment of Landfill Leachate by Fe/Diatomite and Fe/ZSM-5 Non-homogeneous Fenton

LI Li1 ， NING Mencui1 ， SONG Yu1，TAN Yanxia1 Xiaojing2，PENG Li1 , WU Wenbin1   

  1. (1. Faculty of Environment and Chemical Engineering, Kunming Metallurgy College , Kunming 650033, China;2. Kunming Green Island Environmental Technology Co. , Ltd. , Kunming 650228 , China)
  • Received:2023-02-27 Online:2023-04-30 Published:2023-11-13

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Abstract: Using diatomite and ZSM-5 molecular sieve as carriers and Fe(NO, ),9H,0 as the Fe sourceIwo catalysts, two catalysts , Fe/diatomite and Fe/ZSM-5 , were prepared to treat landfill leachate withH,0, in a non-homogeneous Fenton system. The effects of solution pH, temperature, H,0, dosage , cat.alyst addition and reaction time on the COD removal of landfill leachate were investigated. The experimental results show that the COD removal rates of Fe/diatomite and Fe/ZSM-5 catalysts can reach88. 78% and 92. 58% respectively under the conditions that the pH value of the solution system is 3.0the reaction temperature is 30 C , the equivalent concentration of catalyst dosage is 1. 6 g/L, the equiva-ent concentration of H,0, dosage is 0. 2 mol/L, and the reaction time is 60 min.

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