Application of AAO-IMABR coupling process in municipal sewage treatment
In view of the characteristics of municipal sewage such as low COD concentration and relatively high NH3-N and TN concentrations,as well as serious C/N imbalance,the coupling of AAO and heavy ion mi-croporous aeration bio-membrane reactor(IMABR)process was adopted for its treatment.The engineering opera-tion results showed that,the average mass concentrations of COD,NH3-N and TN decreased from 126,32.3 and 38.8 mg/L respectively to 12.2,0.05 and 7.75 mg/L respectively,the removal rates of NH3-N and TN were as high as 99.8%and 80%respectively.The AAO-IMABR coupling process can not only achieve simultaneous ni-trification and denitrification with high nitrogen removal efficiency but also has lower operating costs,and the ef-fluent water quality meets the standard stably.
AAOIMABRcoupling processmunicipal sewagesimultaneous nitrification and denitrificationnitrogen removal
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维普
