中文摘要：

以某改良型Carrousel氧化沟生物处理工艺为案例,分析了对其采用化学强化除磷工艺的技术必要性,并通过静态实验与连续实验证明了该工艺的可行性。结果表明：由于进水有机碳源不足,生物处理难以单独实现总磷达标排放,必须辅助化学除磷;除磷药剂宜选用聚合氯化铝,它产生的污泥产量低,平均约为0.208 g/mmol;药剂投加量与总磷去除控制摩尔比宜为2.0左右,此时可实现出水总磷质量浓度低于1.0 mg/L。

英文摘要：

A biological treatment process based on modified Carrousel oxidation ditch was used as a case, and technical necessity for phosphorus removal by chemical enhanced process was analyzed. The process feasibility was verified by static and continuous experiments as well. The results showed that, because the organic carbon source was not enough in infiuent, it was difficult to reach the discharge standard of total phosphorus （TP） by independent biological treatment process, aided chemical phosphorus removal was essential. The poly aluminium chloride （PAC） was preferable to be used for phosphorus removal. It had a lower sludge production quantity and average value was about 0.208 g/mmol. The molar ratio of agent dosage to TP removal was controlled about at 2.0. Under this conditions, the effluent TP could be less than 1.0 mg/L.