The role of air compressor in sewage treatment

Air compressor plays a role in sewage treatment core role its application runs through many links such as physical treatment, biological treatment and chemical treatment. The following is a detailed analysis:

1. core role

1. physical processing stage
   • drive equipment: The air compressor provides power for the screw conveyor, mixer and other equipment to help remove suspended solids in the sewage.
   • flotation method: through the compressed air to produce tiny bubbles, adhesion of small particles in the sewage (such as emulsified oil), with the bubble floating to the surface, to achieve the separation of pollutants. Commonly used methods include mechanical methods (microporous tubes, microplates) and pressure dissolved air methods.
2. Biological treatment stage
   • aeration oxygen supply: In the activated sludge method, the air compressor provides oxygen for the aeration tank to promote microbial degradation of organic matter. Studies have shown that the wastewater stays in the aeration tank for 4-6 hours and can remove about 90% of the organic matter.
   • Stir and mix: Ensure that the sludge and sewage are fully mixed to improve the treatment efficiency.
3. chemical treatment stage
   • drive pump: Provide power for water pumps, backwash pumps and other equipment, support sludge blowing and valve operation.
   • Gas support: It is used to replace the toxic gas in the sewage tank or provide the air required for combustion to ensure the safe discharge of waste gas.
4. auxiliary system
   • instrument gas: Provide a stable gas source for the detection instrument to ensure accurate control.
   • Dry air source: Keep the processing environment dry to prevent condensation of equipment.

2. equipment selection and technical advantages

1. screw air compressor
   • performance advantages: Low failure rate, simple maintenance, and gradually replace the traditional piston air compressor.
   • energy saving technology permanent magnet variable frequency screw air compressor by adjusting the speed of energy saving, to meet the needs of sewage treatment perennial gas.
2. Oil-free air compressor
   • clean air: Avoid lubricating oil pollution in the treatment process and ensure the quality of the effluent.
3. Corrosion resistant design
   • adapt to the environment: Use corrosion-resistant materials to deal with corrosive gases and liquids in sewage treatment.

3. energy saving and environmental protection measures

1. frequency conversion technology
   • adjust the speed: Adjust the air compressor speed in real time according to the air consumption to reduce energy consumption.
   • energy saving effect: Compared with ordinary air compressors, frequency conversion models can significantly reduce power waste.
2. waste heat recovery
   • utilization of waste heat: The heat generated by the compression process is used to heat domestic water or process water to improve energy utilization.

4. Summary

air compressor in sewage treatment is an indispensable source of power its application covers multiple processing links and reduces operating costs through energy-saving technologies. In the selection, should be preferred corrosion resistance, high efficiency and energy saving the screw air compressor or permanent magnet variable frequency model, combined with waste heat recovery technology to optimize energy utilization. Regular maintenance of equipment can improve stability, ensure sewage treatment efficiency, and achieve green emission standards.