Underground sewage treatment equipment generally consists of an inlet, pretreatment device, bioreactor, sedimentation tank, outlet, etc. The inlet is used to receive wastewater, the pretreatment device is used to remove solid and particulate matter, and the bioreactor is a key part of sewage biological treatment.

The bioreactor is filled with a large amount of packing material, providing a surface for attaching microorganisms. Organisms attach to fillers, utilize organic matter for metabolism, and degrade organic pollutants in water. The sedimentation tank is used to separate suspended solids and sludge from wastewater, thereby obtaining purified water quality.

advantage

1. The buried sewage treatment equipment is buried underground and can be greened on top, creating a beautiful environment.

2. The entire device generally does not require dedicated management.

3. It can reduce the footprint, and parking lots can be built above the equipment without the need for factory buildings or other facilities.

4. No impact on the surrounding environment, minimal sludge production, and noise levels below the standards of Class II areas.

5. Easy to operate, new technology, good effect, and long service life.

6. The equipment can be arranged according to standards or specially arranged according to terrain requirements.

Scope of Application

1. Domestic sewage treatment in rural areas, townships, hotels, etc

2. Wastewater treatment for small and medium-sized food processing plants

3. Medical wastewater treatment in hospitals and small and medium-sized medical institutions

4. Domestic sewage treatment in public places such as stations, airports, docks, parks, scenic spots, and commercial districts

5. Domestic sewage treatment in closed units such as schools, military, government agencies, and mines

6. Washing wastewater treatment in washing plants, washing plants, bathing centers, etc

7. Dishwashing plants, tableware disinfection plants, canteens and other catering wastewater treatment facilities

8. Wastewater treatment for slaughterhouse processing and meat product processing

9. Other enterprises' domestic sewage treatment

Process description of buried sewage treatment equipment:

1) By adopting the A/O treatment process, the removal rate of pollutants has been improved, which not only effectively reduces BOD5, but also effectively removes phosphorus and ammonia nitrogen.

2) Adopting an anaerobic reaction tank, the reflux sludge is thoroughly mixed with the influent under anaerobic conditions. Phosphorus accumulating bacteria release phosphorus and simultaneously absorb low molecular weight acids in the environment, storing them in the form of PHB. In aerobic environments, phosphorus accumulating bacteria absorb a large amount of phosphorus to achieve the goal of phosphorus removal.

3) Adopting a three-stage biological contact oxidation tank, the high dissolved oxygen and excellent microbial community in the tank react with organic pollutants, creating an adaptive environment for the reduction of organic pollutants, oxidation of ammonia nitrogen, and absorption and removal of phosphorus, and improving the removal efficiency of organic pollutants, ammonia nitrogen, and phosphorus.

4) The vertical flow sedimentation tank is mainly used to clarify the effluent from the contact oxidation tank. Therefore, the design of the sedimentation tank adopts reasonable design parameters to improve the clarification effect.

5) Adopting the vertical overturning flow contact disinfection method to kill various pathogenic bacteria and coliforms.