There are many sewage treatment processes, which are mainly divided into two types: activated sludge method and biofilm method. Our common common aeration method, oxidation ditch method,A/Bmethod,A2/Omethod belong to the former, and biological turntable and contact oxidation methods belong to the latter. tankⅠandⅡlevel contact oxidation tank, secondary sedimentation tank and sludge tank are integrated equipment, and contact oxidation tank at ⅠandⅡlevel, effectively combining the contact oxidation method and the activated sludge method. It has the advantages of both and overcomes the shortcomings of both, further improving the level of sewage treatment.
       1and has strong ability to withstand impact loads, and the average residence time of the contact oxidation method is 6 hours.
       2and has the ability to remove nitrogen and phosphorus, and can achieve the ability to treat industrial wastewater, domestic sewage, and urban sewage by adjusting the structure of the equipment.
       3and The fillers in the contact oxidation tank are mostly combination soft fillers, which are light in weight, high in strength, stable in physical and chemical properties, large in specific surface area, strong in biofilm adhesion, and high in contact efficiency between sewage and biofilm.
       4and An aerator is used for blast aeration in the contact oxidation tank, so that the fiber bundles continuously float, the aeration is uniform, and the microorganisms grow maturely, which has the characteristics of the activated sludge method.
       5and The effluent quality is stable, the sludge production is small and it is easy to handle.
       6and The submersible pump can be installed in the equipment to reduce project investment.
       7and equipment can be installed on the ground or buried underground. When buried underground, the upper part can be used for greening. The factory area occupies less space and there are fewer ground structures.
       8and is easy to complete automatic control and management operation is simple.
       9and equipment can be connected to a car to make a mobile integrated sewage treatment equipment.