Adopting the world's advanced biological treatment technology, it is an efficient sewage treatment equipment that combines the removal of BOD5 and COD. It is widely used for domestic sewage treatment in hotels, villa communities, and residential areas, replacing septic tanks with low removal rates that cannot meet comprehensive discharge standards after treatment. Field applications have shown that the AO series sewage treatment equipment is a highly effective and easy to manage device.

Introduction:
The use of buried sewage treatment equipment can leave more surface space for greening, plazas, parking lots, or road use, and can also be semi buried according to terrain needs. Suitable for centralized sewage treatment in villa communities far from municipal sewage treatment plants, replacing traditional septic tanks and effectively removing pollutants such as COD and BOD. Basic principle: The removal of organic pollutants and ammonia nitrogen mainly relies on the AO biological treatment process in the equipment. In Class A, due to the high concentration of organic matter in wastewater, microorganisms are in a state of gas deficiency. At this time, microorganisms are facultative microorganisms that convert and decompose organic nitrogen in wastewater into NH3-N. At the same time, they use organic carbon as an electron donor to convert NO2-N and NO3-N into N2, and also utilize some organic carbon sources and NH3-N to synthesize new cellular substances. So the A-level tank not only has a certain organic matter removal function, reducing the organic load of subsequent aerobic tanks to facilitate nitrification, but also relies on the high concentration of organic matter in the raw water to complete denitrification and eliminate nitrogen eutrophication pollution. At level O, although the concentration of organic matter has significantly decreased, there is still a certain amount of organic matter and high levels of NH3-N present. In order to further oxidize and decompose organic matter, and ensure smooth nitrification while carbonization is complete, an aerobic biological contact oxidation tank with low organic load is set up at level O. There are mainly aerobic microorganisms and autotrophic bacteria (nitrifying bacteria) in the O-level pool. Aerobic microorganisms decompose organic matter into CO2 as a nutrient source, converting NH3-N in wastewater into NO2-N and NO3-N. The effluent from the O-level tank flows back to the A-level tank, providing electron acceptors for the A-level tank and removing nitrogen through denitrification

Performance characteristics:
The main material is excellent, the anti-corrosion technology is advanced, the new elastic three-dimensional filling material has stable effluent water quality, low sludge production, no sludge expansion, good noise reduction effect, soil deodorization facilities, no odor component dissolution, fully automatic electrical control, and reliable equipment that does not occupy surface area.

Application:
The treatment of domestic sewage in hotels, hospitals, nursing homes, schools, residential areas, etc. Wastewater treatment in industries such as aquatic processing plants, livestock storage processing plants, dairy processing plants, etc.