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Landfill is most widely used solution for ultimate disposal of wastes generated with rising urbanization and industrialization. Landfill being a promising solution for waste management effectively but also creates menace to the environment by generation of contaminated wastewater produced by leaching of waste dumped with age known to be leachate. This paper collectively suggests that a sequential treatment approach using primary treatment followed by gravel and zero-valent iron (ZVI) filter media can effectively treat landfill leachate. The present study was carried out to treat the landfill leachate by using a primary treatment followed by ZVI filter techniques. Study was carried out in batch mode by monitoring the COD and solids. This study reports the pretreatment of landfill leachate by coagulation followed by ZVI filtration. Performance of coagulation-flocculation and ZVI in series was analysed at optimum retention time of 12 h for parameters such as pH, COD and (TS) total solids. The maximum efficiency achieved for COD removal was 83.87%. Also, reduction in TS and TDS were observed.

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Sequential Treatment of MSW Landfill Leachate by Primary Treatment Followed by Gravel and ZVI Filter Media as Filter Technique

  • 会议论文

  • 发表日期：

    2025年

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  • Abhay Kumar,
  • Anuj D. Bhatt,
  • Kunwar D. Yadav

摘要

Landfill is most widely used solution for ultimate disposal of wastes generated with rising urbanization and industrialization. Landfill being a promising solution for waste management effectively but also creates menace to the environment by generation of contaminated wastewater produced by leaching of waste dumped with age known to be leachate. This paper collectively suggests that a sequential treatment approach using primary treatment followed by gravel and zero-valent iron (ZVI) filter media can effectively treat landfill leachate. The present study was carried out to treat the landfill leachate by using a primary treatment followed by ZVI filter techniques. Study was carried out in batch mode by monitoring the COD and solids. This study reports the pretreatment of landfill leachate by coagulation followed by ZVI filtration. Performance of coagulation-flocculation and ZVI in series was analysed at optimum retention time of 12 h for parameters such as pH, COD and (TS) total solids. The maximum efficiency achieved for COD removal was 83.87%. Also, reduction in TS and TDS were observed.