There are many sewage treatment processes used at home and abroad, which are mainly divided into two kinds of activated sludge and biofilm method, our common ordinary aeration method, oxidation ditch method, A/B method, A2/O method belongs to the former, the biological carousel, contact oxidation method belongs to the latter. Integrated wastewater treatment equipment is a sinking tank, I, II contact oxidation tank, the second sinking tank, sludge tank centralized in one piece of equipment, and in the I, II contact oxidation tank in the blast aeration, so that the contact oxidation method and the activated sludge method is effectively combined, while having the advantages of the two, and to overcome the shortcomings of the two, so as to further improve the level of wastewater treatment. Grease trap The use of suspended solids in wastewater and water with different specific gravity to achieve the purpose of separation.

The structure of the grease trap is mostly advection type, the oily wastewater through the water tank into the rectangular grease trap plane, along the horizontal direction of slow flow, in the flow of oil on the surface of the water, by the collection of oil pipe or set up on the surface of the pool of the scraper pushed to the collection of oil pipe flows into the dewatering tank. Heavy oil and other impurities precipitated in the grease trap accumulate in the sludge hopper at the bottom of the tank and enter the sludge pipe through the sludge discharge pipe. Wastewater treated by oil separation overflows into the drainage channel and is discharged out of the tank for subsequent treatment to remove emulsified oil and other pollutants.

Integrated wastewater treatment equipment is equivalent to a sewage treatment plant, which can treat wastewater into clear water, which can be reused for washing cars, watering flowers, sprinkling the ground and so on. The grease trap is a primary water treatment equipment, used to separate the oil and water in the catering wastewater, but far from the reuse standard.