1. The villages and towns in Dengfeng City did not have newly built sewage treatment facilities, but the new rural sewage treatment terminal equipment was built due to the urging of the Zhengzhou Municipal Government;

2. The implementation villages are in mountainous areas, some of them are scattered, and the scale of sewage treatment is small (5 tons, 10 tons, 20 tons);

3. All underground installation methods are adopted;

4. Use carbon steel anti-corrosion structure;

5. There are no flush toilets in the local area, and the sewage concentration is high;

6. The process is required to have the characteristics of high efficiency and stability, high processing efficiency, and strong impact load resistance;

7. Facilitate unified management and establish a long-term operation and management mechanism.