Anaerobic treatment of fresh leachate from a municipal solid waste incinerator by upflow blanket filter reactor |
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Authors: | Pinjing He Min Li Suyun Xu and Liming Shao |
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Institution: | (1) National Environmental Engineering Research Institute, Nagpur, India;(2) MIT College of Engineering, Paud Road, Kothrud, Pune, India |
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Abstract: | This paper describes the feasibility of fresh leachate treatment by an upflow blanket filter (UBF). Through dilution and partial
effluent recycling, the organic loading rates increased from 0.51 to 14.56 kg COD/(m3·d), meanwhile the corresponding hydraulic retention time decreased from 9.0 to 3.6 d. The reactor was able to achieve steady-state
within 80 d. Based on the distribution of COD fluxes in the process, it was concluded that anabolism was the main pathway
of COD removal in the initial phase (1–33 d), accounting for 57%–85% of total COD removed. As the anaerobic consortium of
bacteria reached steady-state (after 70–86 d), the majority of COD removed was transformed into methane, because the specific
methane yield was close to the theoretical value (0.36 L CH4/(g CODdeg)). |
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