How do aerators promote pollutant degradation in ecological oxidation ponds?

In the ecological oxidation pond, aerators promote the degradation of pollutants through various mechanisms to improve the efficiency and quality of sewage treatment.

First, increase dissolved oxygen
Aerators inject air into the oxidation pond, significantly increasing the dissolved oxygen content in the water. Sufficient dissolved oxygen is a necessary condition for aerobic microorganisms to perform metabolic activities. Aerobic microorganisms can decompose organic pollutants more efficiently in a high dissolved oxygen environment and convert them into harmless substances such as carbon dioxide and water, thus achieving the degradation of pollutants.

Second, promote microbial growth and metabolism
The agitating effect of the aerator keeps the pond water flowing and promotes the full contact between microorganisms and pollutants. At the same time, the tiny bubbles generated by the aeration process can provide an attached surface for microorganisms and increase the living space of microorganisms. Under good dissolved oxygen and contact conditions, the growth and metabolic activities of microorganisms are strengthened, accelerating the decomposition and transformation of organic pollutants.

Third, improve water mixing and circulation
The operation of aerator makes the water in oxidation pond form directional horizontal circulation and vertical circulation. This kind of water mixing and circulation can effectively avoid the excessive accumulation of pollutants in local areas and ensure the uniform distribution of pollutants in the entire oxidation pond. The uniform distribution of pollutants is conducive to the uniform degradation of microorganisms and improves the efficiency of pollutant treatment in the whole oxidation pond.

Fourth, inhibit algae growth
Excessive growth of algae in oxidation ponds may lead to eutrophication of water, consume a large amount of dissolved oxygen, and affect the degradation of microorganisms. The agitation and bubble release of aerator can destroy the growth environment of algae and inhibit the propagation of algae. Reduce algae competition, provide more stable living conditions for microorganisms, and further promote the degradation of pollutants.

Fifth, promote nitrogen and phosphorus removal
While increasing dissolved oxygen, the aerator can also promote the removal of nutrients such as nitrogen and phosphorus. Under aerobic conditions, microorganisms are able to absorb and use nitrogen and phosphorus more efficiently, converting it into biomass or removing it through biochemical processes. In addition, the water circulation of the aerator helps to transport nutrients such as nitrogen and phosphorus to different areas of the oxidation pond, and improve the removal efficiency of nitrogen and phosphorus by microorganisms.

Sixth, reduce sludge accumulation
The stirring action of the aerator can make part of the sludge deposited at the bottom of the pond suspended in the water again. The suspended sludge is more fully in contact with microorganisms and is easier to be decomposed and utilized by microorganisms. In this way, the aerator reduces the accumulation of sludge at the bottom of the pond, reduces the cost of sludge treatment, and improves the effective volume and treatment capacity of the oxidation pond.

In ecological oxidation ponds, aerators effectively promote the degradation of pollutants by increasing dissolved oxygen, promoting microbial growth and metabolism, improving water mixing and circulation, inhibiting algae growth, promoting nitrogen and phosphorus removal, and reducing sludge accumulation. These synergies significantly improve the efficiency and quality of wastewater treatment in the ecological oxidation pond, making it an efficient and environmentally friendly wastewater treatment technology.