• 关键词：碳源  超短泥龄活性污泥系统  系统性能  动力学参数

• 基金项目：国家水体污染控制与治理科技重大专项（No.2017ZX07102-003）

• 邵宇婷
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 章改
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 王悦
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 刘国华
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 范海涛
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872;尚川（北京）水务有限公司，北京 100097

• 王洪臣
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 徐相龙
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 张景炳
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 姜昭
• 中国人民大学环境学院低碳水环境技术研究中心，北京 100872

• 摘要：由于可以同时实现污水中碳磷的快速分离，超短泥龄活性污泥系统在降低能耗与资源回收方面受到人们的广泛关注.本研究对不同 进水碳源（乙酸钠、丙酸钠、葡萄糖、生活污水）条件下超短泥龄活性污泥系统污泥性质、碳磷分离规律与分离机制、微生物动力学参数等进行了研究.结果表明，与生活污水相比，由单一碳源所培养超短泥龄活性污泥浓度较低，活性较高，但乙酸钠与丙酸钠培养活性污泥处于微膨胀状态.不同碳源培养系统中COD的去除性能并无明显差异（p>0.05），并且由于生活污水中含有悬浮物，COD去除性能弱于单一碳源培养系统.不同碳源培养系统中磷酸盐的去除性能存在较大差异，乙酸钠与丙酸钠基本依靠生物效应除磷，但生物效应无法实现高效除磷，葡萄糖与 生活污水培养系统均同时依靠生物效应与EPS吸附效应除磷，不同碳源培养系统除磷效率排序为：葡萄糖>生活污水>丙酸钠>乙酸钠.研究同时发现，碳源分子量越小，培养系统中活性污泥生物活性越高，异养菌生长与衰减系数越高.

• Abstract：The ultra short sludge-retention-time （SRT） activated sludge system with the ability to separate carbon and phosphorus from wastewater simultaneously has been widely concerned for energy consumption reduction and resource recovery in the field of wastewater treatment. In this paper， the sludge characteristics， separation regulation and mechanism of carbon and phosphorus， and microbial kinetics in the ultra short SRT activated sludge systems were studied based on different influent carbon sources including sodium acetate， sodium propionate， glucose， and actual wastewater. Compared with the actual wastewater cultivating system， the sludge from the systems cultivated by the other carbon sources showed lower concentration and higher activity. Although the systems cultivated by sodium acetate and sodium propionate showed a moderate bulking state， there was no significant difference in COD removal performance compared with the two carbon source systems except actual wastewater cultivating system. However， the phosphate removal efficiency in different systems was quite different. The systems with sodium acetate and sodium propionate mainly relied on biological effect to remove phosphorus， showing an insufficient phosphorus removal efficiency. The system with glucose and wastewater influent relied on both biological effect and EPS adsorption effect to remove phosphorus. The order of phosphorus removal efficiency under different carbon source conditions followed as： glucose>actual wastewater>sodium propionate>sodium acetate. In addition， microbial kinetic analysis indicated that heterotrophic bacteria in the activated sludge systems had higher growth and attenuation coefficients using smaller molecular carbon source， showing higher biological activity.

• Key words：carbon source  ultra short SRT  system performance  microbial kinetics

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