product details

This equipment adopts the world's advanced biological treatment process, which integrates the removal of BOD5, COD, and NH3-N, and is currently the most efficient sewage treatment equipment. It is widely used for the treatment of domestic sewage in high-end hotels, villa communities, and residential areas, replacing septic tanks with low removal rates that cannot meet national comprehensive discharge standards after treatment. Through field application, it has been shown that the WSZ-AO series sewage treatment equipment is a device with excellent treatment efficiency and easy management.

Underground sewage treatment 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, it can effectively remove pollutants such as BOT5, COD, NH3-N.

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 sewage, microorganisms are in a state of gas deficiency. At this time, microorganisms are facultative microorganisms, which convert and decompose organic nitrogen in sewage 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 A-level tanks not only have a certain organic matter removal function, reducing the organic load of subsequent aerobic tanks to facilitate nitrification, but also rely on the high concentration of organic matter in the raw water to complete denitrification and ultimately 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 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-grade tank flows back to the A-grade tank, providing electron acceptors for the A-grade tank. Through denitrification, nitrogen is ultimately removed

Performance characteristics:

Excellent main material and anti-corrosion properties
Advanced technology, new elastic three-dimensional filling material
Stable effluent quality, low sludge production, and no sludge expansion
Good noise reduction effect
Soil deodorization facilities, no odor components dissolved
Fully automatic electrical control, good reliability
Equipment does not occupy surface area

1) Primary sedimentation tank: The MHW-III-WSZ-AO series products have a laminar sedimentation tank with a surface load of 1.5m3/m2. h.
2) Regulating pool: The MHW-III-WSZ-AO series products have a regulating time of 6 hours.
3) A-grade biological tank: MHW-III-WSZ-AO series A-grade biological tank is a push flow biological contact oxidation tank. The residence time of sewage in the tank is 2.7 hours, and the filling material is elastic three-dimensional filling material with a specific surface area of 200m2/m3.
4) O-grade biological tank: MHW-III-WAZ-AO series products. The O-grade biological tank is a push type biological contact oxidation tank, and the residence time of sewage in the tank is 3.0 hours. The filling material is elastic three-dimensional filling material with a specific surface area of 200 m2/m3
5) Secondary sedimentation tank: The MHW-III-WSZ-AO series secondary sedimentation tank is a vertical flow sedimentation tank with a surface load of 1.0 m3/m2. h and a sedimentation time of 2.1 hours.
6) Disinfection pool: The MHW-III-WSZ-AO series product disinfection pool is a cyclone reaction pool, and the total residence time of sewage in the pool is about 30 minutes.
7) Sludge tank: The MHW-III-WSZ-AO series products have sludge storage capacity in the sludge tanks and primary sedimentation tanks, and the sludge after 90 days of concentration is extracted by municipal mud trucks or regularly transported outside.
8) Technical Performance List of MHW-III-WSZ-AO Series Underground Sewage Treatment Equipment

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.