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- W3039476640 abstract "Nitrate-containing wastewater has a severely negative impact on the ecological environment, and anaerobic denitrification process is promising biotechnology for nitrate-containing wastewater treatment. The nitrogen removal performance of anaerobic denitrifying upflow anaerobic sludge bedbioreactor (AD-UASB) and granular sludge characteristics were investigated. The results showed the maximum nitrogen removal loading rate (NRR) was reached up to 28.6 kg/(m3d) as nitrogen loading rate (NLR) was 28.8 kg/(m3d). At the same time, the effluent NO3 −-N concentration and total nitrogen removal efficiency of AD-UASB was 5.09 mg/L and 99.51%, and the effluent NO2 −-N concentration was as low as 10.97mg/L without obvious accumulation. As NLR was elevated to 36 kg/(m3d), the effluent NO3 −-N and NO2 −-N concentration were sharply increased to 199.62mg/L and 453.13mg/L, respectively, Thus, the denitrifying metabolic pathway was strongly suppressed which further led to the accumulation of NO2 −-N concentration and the collapse of AD-UASB performance. The granular sludge was broken up and washed out from the reactor, and meanwhile, the concentration of MLSS and MLVSS were declined to 55.09g/L and 24.7g/L, respectively. The research can provide a beneficial reference for the anaerobic denitrification biotechnology application in nitrate-containing wastewater treatment." @default.
- W3039476640 created "2020-07-10" @default.
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- W3039476640 date "2020-07-01" @default.
- W3039476640 modified "2023-10-16" @default.
- W3039476640 title "Performance of anaerobic denitrifying upflow anaerobic sludge bed bioreactor (AD-UASB)" @default.
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- W3039476640 doi "https://doi.org/10.1088/1755-1315/508/1/012157" @default.
- W3039476640 hasPublicationYear "2020" @default.
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