What are the main equipment of sewage treatment plants
time：2025-09-22
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1、 Overview of Sewage Treatment Plant
A sewage treatment plant is a facility used to treat domestic and industrial wastewater, with the aim of treating the wastewater into water resources that can be discharged or recycled. Generally speaking, sewage treatment plants include multiple stages such as primary treatment, biochemical treatment, secondary sedimentation, and disinfection treatment, and the selection and application of equipment directly affect the effectiveness of the entire sewage treatment process.
2、 Main equipment of sewage treatment plant
1. Aeration tank
Aeration tank is a tank used for oxygenation, with the purpose of providing sufficient oxygen, promoting microbial decomposition of organic pollutants, and improving the speed and efficiency of biochemical reactions. Aeration tanks can be divided into two forms: surface aeration and spray aeration.
2. Sedimentation tank
Sedimentation tank is a device used in the sewage treatment process to separate harmful substances such as small particles, suspended solids, and heavy metals. The design of sedimentation tanks is generally divided into different types such as hydraulic, anaerobic, and aerobic, each with its own characteristics that are suitable for different water quality and specific processes.
3. Biological filter
A biofilter, also known as a reaction tank, is a biological processor used for water purification. It mainly converts organic matter in water into water and carbon dioxide through microbial metabolism, while removing toxic substances and colors, reducing the load on wastewater treatment systems.
4. Disinfection device
A disinfection device is a device used to kill bacteria, viruses, and other pathogens, with the aim of ensuring that wastewater meets the national discharge standards. Disinfection devices include various methods such as ultraviolet disinfection, ozone disinfection, chlorine disinfection, etc.
3、 Conclusion
Wastewater treatment plants are important facilities for protecting the environment and human health, and the quality and efficiency of wastewater treatment depend on the use and management of equipment. In addition to aeration tanks, sedimentation tanks, biofilters, and disinfection equipment, sewage treatment plants also have other important equipment such as pump stations and sludge treatment equipment. The selection and use of these equipment need to be comprehensively considered based on specific circumstances.
