中文关键词好氧/缺氧时长分区排泥生活污水联合优化短程硝化反硝化除磷 英文关键词aerobic/anoxic durationzoned sludge dischargedomestic sewagejoint optimizationshort-cut nitrification denitrifying phosphorus removal

作者	单位	E-mail
王文琪	北京工业大学城市建设学部, 水质科学与水环境恢复工程北京市重点实验室, 北京 100124	wangwq0227@163.com
李冬	北京工业大学城市建设学部, 水质科学与水环境恢复工程北京市重点实验室, 北京 100124	lidong2006@bjut.edu.cn
高鑫	北京工业大学城市建设学部, 水质科学与水环境恢复工程北京市重点实验室, 北京 100124
张杰	北京工业大学城市建设学部, 水质科学与水环境恢复工程北京市重点实验室, 北京 100124 哈尔滨工业大学城市水资源与水环境国家重点实验室, 哈尔滨 150090

中文摘要 采用生活污水接种人工配水下成熟短程硝化反硝化除磷颗粒，通过不同好氧/缺氧时长联合分区排泥优化调控短程硝化反硝化除磷系统运行.结果表明，调控好氧/缺氧时长联合分区排泥可实现系统的稳定运行.后期稳定期出水COD浓度在50mg·L^-1以下，出水TN浓度低于15mg·L^-1，TN去除率达83%左右并保持平稳，出水P浓度均在0.5mg·L^-1以下，平均去除率为93.72%.同时，分区排泥（70%顶部污泥和30%底部污泥）可作为筛选微生物的途径，维持了良好的亚硝化和除磷性能，使粒径分布更为集中，并保证氨氧化菌（ammonia oxidizing bacteria，AOB）和反硝化聚磷菌（denitrifying phosphate accumulating organisms，DPAOs）的生长优势.缺氧时长的增加提高了缺氧异养菌的生长速率，使得缺氧异养菌分泌出更多的EPS，确保了颗粒污泥性状的改善和后续维持稳定. 英文摘要 In this study, domestic sewage was used to inoculate mature short-cut nitrification denitrifying phosphorus removal particles, which were cultivated and matured under artificial water. The operation of the short-cut nitrification denitrifying phosphorus removal system was optimized using different aerobic/anoxic durations combined with zoned sludge discharge. The results showed that regulating the aerobic/anoxic duration, in combination with zoned sludge discharge, can realize the stable operation of the system. In the later stable period, the effluent COD concentration was below 50 mg·L^-1, the effluent TN concentration was below 15 mg·L^-1, the TN removal rate reached about 83% and remained stable, the effluent P concentration was below 0.5 mg·L^-1, and the average P removal rate was 93.72%. At the same time, zoned sludge discharge (70% top sludge and 30% bottom sludge) can be used to screen out microorganisms, maintain good nitrosation and phosphorus removal performance, limit the particle size distribution, and ensure the growth advantages of AOB and DPAOs. Increases in the anoxic duration improved the growth rate of anoxic heterotrophic bacteria, causing them to secrete more EPS and ensuring granular sludge improvements and continued stability.

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