In order to solve high cost and some other problems existing in advanced denitrification process for liquor wastewater treatment,a pilot-scale system of shortcut denitrification-anammox-simultaneous nitrifica-tion and denitrification was used to carry out rapid start-up experimental research.Taking the actual liquor wastewater pretreated by anaerobic process as the influent water of the denitrification system,the mass concen-trations of COD and ammonia nitrogen were 1 100 and 600 mg/L respectively.The experimental process lasted for 150 days in total,the experimental results showed that,treating anaerobic pretreated liquor wastewater with low carbon-nitrogen ratio,the removal rates of COD and total nitrogen in the pilot-scale system were maintained at 92％and 95％respectively,the total nitrogen removal load of the anammox system was 0.4-0.5 kg[TN]/(m3·d).The anammox system could realize total nitrogen removal without external carbon source,therefore could achieve advanced denitrification.In addition,the said denitrification system can achieve rapid start-up and op-erate with low dissolved oxygen.Compared with conventional nitrification and denitrification process,the said process can significantly reduce electric energy and chemical consumption.
关键词
白酒废水/厌氧氨氧化/组合工艺/短程硝化/同步硝化反硝化/节能降耗
Key words
liquor wastewater/anammox/combined process/shortcut nitrification/simultaneous nitrification and denitrification/energy saving and consumption reducing
维普
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