1.Start-up of a full-scale system for short-cut nitrification and Anammox in treatment of pharmaceutical wastewater.
Shuang DING ; Ping ZHENG ; Zonghe ZHANG ; Huifeng LU ; Meng ZHANG ; Datian WU ; Zegao WU
Chinese Journal of Biotechnology 2014;30(12):1889-1900
In order to broaden the application area of the new nitrogen removal technology, a full-scale system for short-cut nitrification and anaerobic ammonium oxidation (Anammox) was investigated in the nitrogen removal from a strong-ammonium pharmaceutical wastewater. When the influent ammonium concentration was (430.40 ± 55.43) mg/L, ammonia removal efficiency was (81.75 ± 9.10)%. The short-cut nitrification and Anammox system could successfully remove nitrogen from the pharmaceutical wastewater. The start-up of short-cut nitrification system took about 74 d and the nitrite accumulation efficiency was (52.11 ± 9.13)%, the two-step mode using synthetic wastewater and actual wastewater was suitable for the start-up of short-cut nitrification system. The start-up of Anammox system took about 145 d and the maximum volumetric nitrogen removal rate was 6.35 kg N/(m3·d), dozens of times higher than those for the conventional nitrification-denitrification process. The strategy achieving Anammox sludge by self-growth and biocatalyst addition was suitable for the start-up of Anammox system.
Ammonia
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chemistry
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Bioreactors
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Drug Industry
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Nitrification
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Nitrites
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chemistry
;
Nitrogen
;
chemistry
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Sewage
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microbiology
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Waste Disposal, Fluid
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methods
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Waste Water
;
chemistry