摘要： 采用厌氧/好氧/缺氧模式运行的SBR工艺处理模拟城市污水，考察外加碳源乙酸钠和污泥水解酸化上清液对其脱氮除磷效果的影响。模拟城市污水，进水水质COD为400 mg/L、氨氮为60 mg/L、磷酸盐为7 mg/L。结果表明：不投加碳源时，系统对COD、氨氮、磷酸盐的去除率分别为90%、91%、82%；乙酸钠投加量为60 mg/L的条件下，外加乙酸钠系统对COD、氨氮、磷酸盐的去除率分别为93%、100%、100%，磷的去除主要是通过好氧聚磷作用；上清液投加量折合进水COD为30 mg/L时，外加污泥水解酸化上清液系统对COD、氨氮、磷酸盐的去除率分别为97%、99%、95%，系统中出现明显的反硝化除磷现象，反硝化除磷占24%。

关键词: SBR, 碳源, 污泥, 水解酸化, 反硝化除磷

Abstract: The SBR process of anaerobic/aerobic/anoxic operation mode has been used for treating simulated urban sewage. The influences of extra carbon sources sodium acetate and sludge hydrolytic acidification supernatant flu-id on the removing effects of nitrogen and phosphorus are investigated. In the simulated urban sewage,its influent water quality COD concentration is 400 mg/L,ammonia nitrogen concentration 60 mg/L,and phosphate concentra-tion 7 mg/L. The results show that without adding any carbon sources,the removing rates of COD,ammonia nitro-gen and phosphate by the system are 90%,91% and 82%,respectively. When the dosage of sodium acetate is 60 mg/L,the removing rates of COD,ammonia nitrogen and phosphate by AOA-SBR system are 93%,100% and 100%,respectively. The removal of phosphorus is mainly through aerobic poly-phosphorus effect. When the su-pernatant fluid dosage converts into influent COD 30 mg/L,the removing rates of COD,ammonia nitrogen and phosphate by AOA-SBR system are 97%,99% and 95%,respectively. Apparent denitrifying phosphorus removal phenomenon appears. The percentage of denitrifying phosphorus removal is 24%.

Key words: SBR, carbon source, sludge, hydrolysis acidification, denitrifying phosphorus removal

中图分类号: 

• X703.1