The practical significance of sewage treatment equipment is mainly reflected in the following aspects:

First, environmental protection and water quality improvement

1. Reduce water pollution: untreated sewage discharged directly into the environment will seriously pollute rivers, lakes and oceans and destroy the ecological balance of water bodies. Sewage treatment equipment through physical, chemical and biological methods to effectively remove harmful substances in sewage, such as organic matter, heavy metals, bacteria and viruses, protect water quality, reduce pollution to natural water bodies.

2. Ecological environment protection: Excessive discharge of nitrogen, phosphorus and other nutrients in sewage will lead to eutrophication of water bodies, causing cyanobacteria, bloom and other phenomena, and destroying aquatic ecosystems. Sewage treatment equipment can reduce the discharge of these nutrients and maintain the ecological balance of water bodies.

Second, resource recycling and utilization

1. Improve the recycling rate of water resources: sewage treatment equipment not only treats sewage, but also recyles the treated water, such as for agricultural irrigation, urban greening, industrial cooling, etc., thus saving fresh water resources and alleviating water shortage.

2. Recycling useful substances: In the sewage treatment process, some valuable substances such as phosphorus, potassium, etc., can be recovered and reused to achieve the recycling of resources.

Third, promote economic development and social progress

1. Drive the development of related industries: The research and development, production, operation and maintenance of sewage treatment equipment require a lot of human, material and financial investment, which will drive the development of environmental protection industry, manufacturing industry and other related industries and promote economic growth.

2. Improve urban quality: With the acceleration of urbanization, urban sewage discharge is increasing. The construction and use of sewage treatment equipment can improve the urban sewage discharge environment and enhance the overall quality and environmental image of the city.

Fourth, improve public health

1. Reduce the spread of diseases: Pathogenic microorganisms in sewage are easy to cause various diseases if they are discharged directly into the environment. Sewage treatment equipment effectively kills these pathogenic microorganisms through disinfection and other links to reduce the risk of disease transmission.

2. Ensure the safety of drinking water: The wide application of sewage treatment equipment can reduce the risk of pollution in water sources, so as to ensure the safe supply of drinking water.

Fifth, promote technological progress and innovation

1. Promote technological innovation: With the continuous improvement of environmental protection requirements and the increase in the difficulty of sewage treatment, sewage treatment equipment needs to continue to carry out technological innovation and improvement to meet new needs. This has promoted the development and application of relevant technologies.

2. Improve the level of automation: modern sewage treatment equipment uses automated control systems to achieve remote monitoring and operation management, which improves the operation efficiency and stability and reduces labor costs and labor intensity.

In summary, sewage treatment equipment has important practical significance in environmental protection, resource recovery and utilization, economic development and social progress, public health protection and technological progress and innovation. With the continuous enhancement of people's awareness of environmental protection and the continuous progress of science and technology, the application range of sewage treatment equipment will be more and more extensive and its role will be more prominent.