The oil separation tank uses the different specific gravity of suspended solids and water in wastewater to achieve the purpose of separation. The structure of grease trap mostly adopts advection. Oily wastewater enters the rectangular oil separation tank through the water distribution tank and flows slowly along the horizontal direction. During the flowing process, the oil product floats to the water surface, is pushed into the oil collecting pipe by the oil collecting pipe or the oil scraper installed on the tank surface, and flows into the dehydration tank. Heavy oil and other impurities precipitated in the oil separation tank gather in the sludge hopper at the bottom of the tank and enter the sludge pipe through the sludge discharge pipe. After oil separation, the wastewater overflows to the drainage tank for subsequent treatment to remove emulsified oil and other pollutants.

Design foundation/grease trap

1. Oily sewage from canteens and restaurants can only be discharged into sewage pipes after passing through the degreasing device.

2, sewage flow should be calculated according to the design second flow.

3. The flow rate of sewage containing edible oil in the pool shall not be greater than 0.005 m/s. ..

4. The residence time of sewage containing edible oil in the pool water is 2 ~ 65438 00 minutes.

5. The volume of oil in the artificial degreasing grease trap should not be less than 25% of the effective volume of the pool.

6. The grease trap shall be equipped with a movable cover plate. The possibility of cleaning the inlet pipeline should be considered.

7. The depth from the bottom of the outlet pipe of the grease trap to the bottom of the pool should not be less than 0.6m