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RISS 인기검색어
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- 저자 : Zabihollah Yousefi (검색결과 1 건)
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Mohammad Ali Zazouli,Zabihollah Yousefi,Esmaeil Babanezhad,Alireza Ala 대한환경공학회 2023 Environmental Engineering Research Vol.29 No.3
This study evaluated a novel municipal solid waste leachate (MSWL) treatment system called the Batch flow leachate treatment system (BFLTS). This process uses a combination of coagulation/flocculation (C-F), advanced oxidation (sulfate-hydroxyl radical), and extended aeration of activated sludge (EAAS) to treat MSWL. The results indicated that the primary treatment phase using coagulation/flocculation with 0.8 g L<SUP>-1</SUP> FeCl₃ at pH 6 achieved 67% turbidity and 63% chemical oxygen demand (COD) reduction. The secondary treatment phase with the presence of both K₂S₂O<SUB>8</SUB> and H₂O₂ peroxides was more efficient than single peroxide processes. While PS-based or H₂O₂-based single peroxide processes are less effective (UV-PS 65.7%, UV-H₂O₂ 43.2%, Heat-PS 58.6%, Heat-H₂O₂ 34.5%, and Heat-PS/H₂O₂ 74.8%). The UV-PS/H₂O₂ system achieved the highest COD removal rate of 89.4%. In the third treatment phase, the efficient removal of COD and Biochemical oxygen demand (BOD) under optimal operating conditions was 87.3% and 94.7% respectively. Overall, the BFLTS treatment system has demonstrated high efficiency in removing COD, BOD, TSS, Turbidity, TKN, and Heavy metals by 99%, 98%, 97%, 89%, 86%, and 98%, respectively. This hybrid process has potential for reducing organic load in MSWL and can be used for various leachates.
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