Sewage biological deodorization is a device that uses microbial metabolic activities to decompose organic pollutants into non-polluting water and carbon dioxide gas. It is an activated sludge method. The method is mature and has good treatment effect, and is widely used in sewage treatment plants. However, this method is more sensitive to fluctuations in influent water quality and quantity. Therefore, corresponding adjustment and control measures should be taken to maintain a stable effluent effect.
When the packing is set as the carrier in the biochemical reaction tank, the water enters the reactor through the gap of the filler, and is in full contact with the microorganisms on the packing to carry out the biochemical reaction. When the water flows through the surface of the filler, a strong disturbance will be generated, forming a jet, so that the air and water are mixed to achieve the purpose of uniform mixing, so that the suspended solids in the water are separated, flow into the sedimentation area, and be discharged after further purification.
Flocs are composed of particles with uniform particle size, and the particle size is generally less than 01mm, spherical or similar spherical state is called flocculation hereinafter referred to as alum), which condenses with each other in the water to form large alum particles that settle at the bottom of the water, and are discharged from the body through the sewage outlet.
Features of biological deodorization technology.
1. No secondary pollution.
Uses the metabolism of microorganisms to remove odor pollutants without the addition of chemicals.
2. Low energy consumption, simple operation and maintenance.
The intelligent control system is used to realize automatic circulating spraying to ensure microbial activity, and the full set of equipment is fully automatic to operate, without additional staff.
3. Fast start-up and short debugging cycle.
The scientific selection and precise addition of microbial activity promoters make the high-efficiency deodorant flora quickly enriched on the surface of the filler and shorten the commissioning cycle.
4. Resistant to shock load, stable treatment effect.
The microbial index on the surface of the filler is high, the microbial community structure is stable, and it is resistant to high-concentration odor impactIt can still maintain a stable deodorization effect under complex working conditions (water outage in the factory area, equipment maintenance, etc.).
Deodorization process of biological filter deodorization box:
The odorous gas is collected through the pipeline and enters the deodorization box of the biological filter, and the air flow and circulating liquid complete the three processes of biological gas diffusion, liquid solid diffusion and biological oxidation through the biological packing layer, and the biofilm microorganisms on the surface of the biological filler take the odorous gas substances as nutrition, and the odor and volatile organic compounds are oxidized and decomposed by microorganisms, and generate energy in the transformation process to provide energy for the growth and reproduction of microorganisms, so that the transformation of odorous gas substances continues, and the purified gas is discharged by the induced draft fan.
The biological deodorization automation equipment mainly adopts the biological filter process, which is a process that uses microbial cells to adsorb, absorb and degrade odorous substances. The odor enters the treatment system through the pre-washing pool to humidify and remove dust, and then enters the biological filter, the odor passes through the wet, porous, full of active microbial filter layer, using the adsorption, absorption and degradation functions of microbial cells, microbial cells have the characteristics of small individuals, large surface area, strong adsorption, and diverse metabolic types, and the odor substances are adsorbed and decomposed into carbon dioxide, H2O, H2SO4, and simple inorganic substances, such as HNO3. NH3 effectively removes odorous components such as H2S.