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首页> 外文期刊>Journal of environmental science and health, Part A. Toxic/hazardous substances & environmental engineering >Technical and economic aspects of a sequential MF + NF + zeolite system treating landfill leachate
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Technical and economic aspects of a sequential MF + NF + zeolite system treating landfill leachate

机译：Technical and economic aspects of a sequential MF + NF + zeolite system treating landfill leachate

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This work explores the techno-economic aspects of landfill leachate treatment by an integrated scheme composed of microfiltration (MF), nanofiltration (NF), and zeolite application for carbon and nitrogen removal. In bench-scale experiments, MF and NF were investigated, and zeolite batch tests were carried out to determine optimum conditions. A preliminary economic analysis is presented for a 200 m~3 d~(-1) full-scale treatment facility based on the data obtained from experimental tests and literature surveys. The maximum removals of 92%, 94%, and 79% for chemical oxygen demand (COD), absorbance at 254 nm, and ammonium nitrogen (NH_4~+-N) were achieved in bench experiments, respectively. It was possible to reach the local discharge standard for COD (200 mg L~(-1)), but it was not possible to reach the Brazilian disposal requirement for NH_4~+-N (20 mg L~(-1)). The total cost of the integrated MF+NF + zeolite system was estimated at 19.89US$m~(-3). In this study, the costs of the zeolite application account for around 70% of the total costs of the integrated scheme. Membrane process integration was an adequate strategy for removing organic compounds at low operating costs; However, further NH_4~+-N depuration is needed to meet discharge requirements.

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