Sewage temperature is mainly determined by climate temperature. On the one hand, the buried depth of municipal pipelines meets the minimum depth stipulated in the code, but due to the cold winter in Inner Mongolia, there is still frozen soil below ten meters or even twenty meters, which will reduce the water temperature; On the other hand, the heat transfer between the pool body and the water surface leads to the drop of water temperature. To improve the water temperature, measures such as pool body insulation, water surface capping or covering can be taken, and other measures can also be taken, such as providing heat source, air duct insulation, and thermal energy utilization of mechanical and electrical equipment.
Regarding the environmental protection of anaerobic and aerobic tanks in northern sewage treatment, it is suggested that low-temperature bacteria can be cultivated or heated. After sealing first, the temperature in the tank has little effect day and night. If a hut is built on the ground, there will be a lot of greenhouse gases in the hut, which can absorb heat during the day and keep the temperature of the pool at night.