Underground sewage treatment equipment refers to burying all equipment underground or semi-underground. Its advantages include small footprint, low noise, no odor, little impact on climate, convenient management, and high processing efficiency.
1. The working principle of anaerobic biological filter
Filtration? The filler intercepts large particles and suspended solids in the filtered water
Hydrolysis? Anaerobic microorganisms can break down macromolecules Insoluble substances are hydrolyzed and converted into soluble substances of small molecules
. Absorption? Anaerobic microorganisms adsorb and absorb organic pollutants in the water. Part of them is used for their own growth and reproduction, and part of them is sealed out through the water in the form of biogas< br/>Denitrification? Return the effluent from the contact oxidation bed to the anaerobic filter. The denitrifying bacteria in the anaerobic microorganisms can use the nitrate nitrogen in the return water and convert it into nitrogen to remove nitrogen substances in the sewage. After rural sewage is treated by anaerobic filters, the concentrations of suspended solids, organic pollutants and nitrogen are reduced, and the subsequent load of the contact oxidation bed is reduced.
2. The working principle of the contact oxidation bed
, adsorption?
During the growth and reproduction process of aerobic microorganisms on the filler, they interact with each other to form a biofilm with a larger surface area and higher concentration. A large amount of adsorption of most of the organic pollutants in the water reduces the concentration of pollutants, uptakes, and decomposes them?
When air is continuously vented into the reactor, aerobic microorganisms can use the adsorbed organic pollutants as Nutrients are taken into the human body for metabolism, part of which is used for their own growth and reproduction, and part of which is converted into carbon dioxide and water. The contact oxidation bed further reduces the concentration of organic pollutants in rural sewage and the removal rate reaches above, which can meet the national second-level sewage discharge standards.
3. The working principle of the sedimentation tank
Use gravity to make the suspended sludge in the effluent from the oxidation bed sink to the bottom of the tank, thereby removing it from the water to ensure better effluent quality
br/>, the sludge that settles to the bottom is automatically returned to the contact oxidation bed to maintain the sludge concentration in the contact oxidation bed.
Underground sewage treatment equipment is a high-efficiency modular biological treatment equipment with the advantages of stable operation, easy operation, and high integration.
Xuzhou integrated underground sewage treatment equipment