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- W2373014328 abstract "A system consisted of two-stage UASB-Anoxic/Oxic reactor (A/O) was used to treat municipal landfill leachate with high COD and ammonia concentration. The 180 days operational results showed that the maximum organic removal rate in UASB1 and UASB2 was 12.5 and 8.5 kg·m~ -3 ·d~ -1 , respectively. The maximum NO_x-N removal rate in UASB1 was 3.0 kg·m~ -3 ·d~ -1 . COD removal efficiency of the system was 80%~92% with effluent COD of 800~1500 mg·L~ -1 . At the raw NH~+_4-N of 1100~2000 mg·L~ -1 , the maximum NH~+_4-N removal rate was 0.68 kg·m~ -3 ·d~ -1 . At 17~30℃, the NH~+_4-N removal efficiency was about 99% by nitritation with effluent NH~+_4-N less than 15 mg·L~ -1 . The NO_x-N in recirculated effluent and return sludge was completely denitrified in the UASB1 and anoxic zone of A/O reactor, respectively. The total inorganic nitrogen (TIN) removal efficiency was 80%~92%. Due to the alkalinity supplement from complete denitrification, pH was more than 8.5 causing the maintenance of high-strength free ammonia (FA) in the A/O reactor. High-strength FA was a main reason resulting in nitritation. The aeration time in the A/O was adjusted by using pH as controlling parameter to achieve microbiological community optimization; meanwhile the stable nitritation was attained." @default.
- W2373014328 created "2016-06-24" @default.
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- W2373014328 date "2006-01-01" @default.
- W2373014328 modified "2023-09-23" @default.
- W2373014328 title "Nitrogen removal from high nitrogen municipal landfill leachate via nitritation and denitritation" @default.
- W2373014328 hasPublicationYear "2006" @default.
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