中文摘要：

为强化低温脱氮效能，通过快速富集驯化得到一组低温好氧反硝化菌群，其在10℃好氧环境下可实现氨氮、总氮和有机物的高效同步去除。低温好氧反硝化菌群与聚氨酯载体结合后投加进行生物强化，氨氮去除率提升10.31％～16.89％，总氮去除率提升25.07％～32.44％，且各项指标出水均达一级A标准；停止强化10 d后，强化反应器较未强化反应器氨氮、硝氮、总氮和CODCr出水质量浓度仍分别下降2.43，3.07，6.02和3.63 mg／L，说明低温好氧反硝化菌群强化具有显著高效和持续时间长的优点。

英文摘要：

Low temperature inhibits the performance of nitrogen removal efficiency during the biological treatment of municipal wastewater. Therefore, the effluent could hardly meet the emission standard. To enhance the performance of nitrogen removal at low temperature, a psychrotolerant aerobic denitrification consortium by fast enrichment and domestication was obtained, which could remove the ammonia, nitrate and organic matter simultaneously and efficiently in aeration environment under 10℃. The results showed that the removal efficiency of ammonium and total nitrogen by bioaugmentation was improved by 10.31%-16.89% and 25.07%-32.44%, respectively. It made the effluent quality meet the grade1A level of national discharge standard. After bioaugmentation terminating for 10 days, the remained consortium could still improve the reactor that the effluent of ammonium, nitrate, total nitrogen and CODCr concentrations was decreased about 2.43, 3.07, 6.02 and 3.63 mg/L, respectively. The results indicated that bioaugmentation performed well and persistently.