Frontiers of Environmental Science & Engineering
>> 2009,
Volume 3,
Issue 4
doi:
10.1007/s11783-009-0149-6
Anaerobic treatment of fresh leachate from a
municipal solid waste incinerator by upflow blanket filter reactor
State Key Laboratory
of Pollution Control and Resource Reuse, Key Laboratory of Yangtze
River Water Environment, College of Environmental Science and Engineering,
Tongji University, Shanghai 200092, China;
Available online: 2009-12-05
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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 0.51to 14.56kg COD/(m·d), meanwhile the corresponding hydraulic retention time decreased from 9.0d to 3.6d. The reactor was able to achieve steady-state within 80d. 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―33d), accounting for 57%―85% of total COD removed. As the anaerobic consortium of bacteria reached steady-state (after 70―86d), the majority of COD removed was transformed into methane, because the specific methane yield was close to the theoretical value (0.36L CH/(g COD)).
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