Process

1. At the beginning of the sinking pond: The vertical stream sedimentation tank is used, and the sewage rate is 0.5-0.8mm/s. The sludge uses the air to the sludge pool. The amount of water treatment is ≤2m 可以h, and it can be merged with the water collection adjustment pool to the initial sinking tank. The stay time is 2.5-6.0HR.

2. Contact oxidation pool: contact oxidation pools are divided into three levels. The total stay time is 4.5-6.0HR, with a built-in combination filler. The aeration system uses micropores, which greatly improves the efficiency of oxygen use, thereby reducing energy consumption. The water and gas ratio is generally 1: 15-20.

3. Second Shen Pond: The second sinking pond is the sedimentation tank of the oblique board. The total stay time is 1-2HR.

4. Disinfection pool: The contact time of the disinfection pool is 30min according to the TJ14-74 standard, and special sewage can be extended to 1-1.5HR. Generally, solid chlorine sterilization can be used Eat emissions can save disinfection ponds.

5. Small ponds: All sludge in the Chu Shen Chi and the Er Shen Chi are all rowed into the sludge pool for oxidation and digestion. The upper liquid returns to the contact oxidation pool. Because the remaining sludge amount is small, it is generally cleaned around September to June.

Technical parameter

Model specification