The application of air compressor in the sewage treatment industry is wide and critical, mainly reflected in the physical treatment, biological treatment, chemical treatment and auxiliary systems and other links., the following is a detailed summary of its application:
1. physical treatment stage
- suspended solids removal: Compressed air provided by the air compressor drives screw conveyors, mixers and other equipment to help remove suspended solids. For example, in the air flotation process, air is introduced into the sewage and separated from the water as a carrier in the form of fine bubbles and fine particulate pollutants. The material with relative density close to the water in the sewage is attached to the bubble and rises to the water surface with the bubble, and then skimmed by mechanical method, so as to realize the separation of pollutants in the sewage and the sewage.
- dissolved air system: In the dissolved air flotation process, the air compressor dissolves the air in the water under a certain pressure to reach a saturated state, and then suddenly decompresses the pressure to make the supersaturated air escape from the water in the form of tiny bubbles. This process requires an air compressor to provide a stable gas source to ensure the efficiency of dissolved gas.
2. biological treatment stage
- aeration system the biological treatment system relies on the pure compressed air supplied by the air compressor to provide the necessary oxygen environment for microorganisms and promote the degradation of organic matter. Aeration system is a key link in biological treatment, and its efficiency directly affects the effect of sewage treatment. The compressed air provided by the air compressor is evenly distributed into the sewage through the aeration device, providing sufficient oxygen for the microorganisms to efficiently decompose the organic matter in the sewage.
- Filter mixing: The air compressor is also used to aerate the bottom of the filter to fully stir the inside of the filter and improve the filtration efficiency.
3. chemical treatment stage
- power of water pump and backwash pump: The air compressor provides power for water pumps, backwashing pumps and other equipment, supports sludge cleaning, pneumatic valve operation, etc., to ensure the final deep purification of sewage.
- Dissolved gas tank operation in the chemical treatment process, the operation of the dissolved gas tank also needs the support of the air compressor. The dissolved air tank dissolves air in water through the compressed air provided by the air compressor to form dissolved air water for subsequent chemical treatment processes.
4. assistance system
- instrument gas: The air compressor provides air source for the instrument in the sewage treatment plant to ensure the normal operation and accurate measurement of the instrument.
- Dryer air source the air compressor is also used as the air source of the dryer, providing dry and clean compressed air for the dryer, ensuring that all controls in the whole sewage treatment process are accurate and the environment is dry and free of condensation.
