碳源种类对反硝化除磷系统运行状态的影响  

Effects of Carbon Source Types on Operation of Denitrifying Phosphorus Removal System

作　　者：吉芳英[1] 杨勇光[1] 万小军[1] 贺颖[1] 

机构地区：[1]重庆大学三峡库区生态环境教育部重点实验室,重庆400045

出　　处：《中国给水排水》2010年第15期5-9,共5页China Water & Wastewater

基　　金：国家自然科学基金资助项目(50278101);国家水体污染控制与治理科技重大专项(2008ZX07315)

摘　　要：在与生活污水试验系统作对比的情况下,采用连续运行方式研究了乙酸、丙酸、葡萄糖三种单碳源对反硝化除磷系统运行状态的影响。试验结果表明:①运行良好的反硝化除磷系统能在短时间内承受因碳源变化带来的冲击;3d后单碳源系统出现了厌氧释磷和出水磷浓度的波动;两周后,乙酸、丙酸系统逐渐恢复稳定,葡萄糖系统则逐渐失去反硝化吸磷能力。②乙酸能提高生物除磷效果,可以作为富集反硝化除磷菌(DPB)的有效碳源;丙酸虽然也可以提高生物除磷效果,但对反硝化除磷的促进作用不明显;葡萄糖的大量存在将使已成为优势菌群的PAOs和DPB逐渐被非聚磷菌取代。③乙酸碳源基质的污泥产率系数低于丙酸和葡萄糖的,葡萄糖碳源基质有利于获得更高的污泥产率。Compared with the domestic sewage test system, the influence of different types of carbon sources, such as glucose, acetic acid and propionic acid on the operation of denitrifying phosphorus removal system operated continuously was researched. The resuhs indicate that： ① When the denitrifying phosphorus removal system is well operated, it can resist the impacts due to change in carbon sources in a short time. After three days, anaerobic phosphorus release and fluctuation of effluent phosphorus concentration occur in single carbon source system; and two weeks later, the stability is restored in the systems with acetic acid or propionic acid as carbon source, while the ability of denitrifying phosphorus uptake is lost in the system with glucose as carbon source; ②Acetic acid can enhance biological phosphorus removal efficiency and can be used as an effective carbon source to enrich denitrifying phosphorus accumulating bacteria （DPB）, while propionic acid can also enhance biological phosphorus removal efficiency, but it has no significance on denitrifying phosphorus removal. Because of a great deal of glucose, PAOs and DPB are replaced by non-phosphorus accumulating bacteria; ③The sludge yield coefficient of acetic acid is lower than that of propionic acid and glucose, and glucose has higher sludge yield.

关 键 词：反硝化除磷 碳源 生活污水 乙酸 丙酸 葡萄糖 

分 类 号：X703[环境科学与工程—环境工程]