The buried domestic sewage treatment equipment adopts the biological treatment process of *, which integrates the removal of BOD5, COD, and NH3-N. It has the advantages of stable and reliable technical performance, good treatment effect, low investment, small land occupation, and easy maintenance. The equipment is buried underground, and the surface above the equipment can be used for greening or other purposes without the need for building houses, heating, or insulation. Second level biological connection.
The contact oxidation treatment process adopts push flow biological contact oxidation, which has a better treatment effect than mixed or two-stage series mixed biological contact oxidation tanks. And the activated sludge tank has a small volume, strong adaptability to water quality, good shock load resistance, stable effluent quality, and will not produce sludge expansion. A new type of elastic three-dimensional packing is used in the pool, with a large surface area and easy biofilm formation and detachment by microorganisms. Under the same organic load conditions, it has a high removal rate of organic matter and can improve the solubility of oxygen in the air in water. The biochemical tank adopts the biological contact oxidation method, which has a relatively low volume load of the filling material, and the microorganisms are in the self oxidation stage, resulting in low sludge production. It only takes more than three months (90 days) to discharge the sludge (using a manure truck to suction or dehydrate it into a sludge cake for external transportation). The deodorization method of this buried domestic sewage treatment equipment not only uses conventional high-altitude exhaust, but also includes soil deodorization measures. The entire equipment processing system is equipped with a fully automatic electrical control system and equipment fault alarm system, which operates safely and reliably. Generally, there is no need for dedicated personnel to manage it, and only timely maintenance and upkeep of the equipment is required.