The WSZ buried domestic sewage treatment device can be buried below the ground surface, which can be used as green or square land. Therefore, this equipment does not occupy the surface area, does not require building, and does not require insulation.
The WSZ-AO sewage treatment equipment consists of secondary equipment made of steel structure, and uses domestically pioneered anti-corrosion coatings for corrosion prevention. It has acid, alkali, salt, gasoline, kerosene aging resistance, impact and wear resistance, and can be rust proof with embroidery. After the equipment is coated with paint, the anti-corrosion life can reach more than 12 years.
The AO biological treatment process in the WSZ buried domestic sewage treatment plant adopts a push flow biological contact oxidation tank, which has a better treatment effect than fully mixed or two-stage series fully mixed biological contact oxidation tanks. And it has a smaller volume than activated sludge tanks, strong adaptability to water quality, good impact resistance, stable effluent water quality, and will not cause sludge expansion. At the same time, a new type of elastic standing material is used in the biological contact oxidation tank, which has a large actual specific surface area, microbial biofilm formation, and convenient membrane removal,