低温及运行参数对低碳磷比生活污水的影响研究

Effect of Low Temperature and Operating Parameter on Low Carbon-Phosphorus Ratio Domestic Wastewater

摘要: AAO工艺广泛被用于处理生活污水，温度和碳源是影响微生物代谢过程的两个重要因素。低温会使微生物活性和底物利用率下降，有机碳源的缺乏会导致系统中的释磷与反硝化之间存在因碳源不足的竞争性矛盾。在我国北方地区，冬天水温一般在5℃~10℃，且我国生活污水普遍具有低C/P的特点。因此实验室模拟了北方生活污水的特点，更改实验参数，为低温低C/P条件下反硝化除磷工艺的实际推广应用提供了技术参考。

Abstract: The AAO process is widely used to treat domestic wastewater, and temperature and carbon source are two important factors affecting microbial metabolic processes. Low temperature will reduce microbial activity and substrate utilization, and the lack of organic carbon source will lead to competitive conflicts between phosphorus release and denitrification in the system due to insufficient carbon source. In the northern region of China, the water temperature in winter is usually 5˚C~10˚C, and domestic wastewater in China is generally characterized by low C/P. Therefore, the laboratory simulated the characteristics of northern domestic wastewater and changed the experimental parameters to provide a technical reference for the practical application of denitrification and phosphorus removal process under low temperature and low C/P conditions.