Sewage treatment equipment is a kind of industrial equipment that can effectively treat urban domestic sewage and industrial wastewater. Through physical, chemical and biological methods, the harmful substances in the sewage are decomposed, transformed, removed and other treatment processes, so that the sewage meets the national standards and environmental protection requirements, and can be reused and discharged. The following is a detailed explanation of the sewage treatment equipment:

First, definition and function

The main function of sewage treatment equipment is to remove suspended matter, organic matter, nitrogen and phosphorus and other nutrients, heavy metal ions and other harmful substances in sewage through various treatment technologies, so that the treated water quality can meet the specific discharge standards or reuse requirements. These devices are of great significance for preventing environmental pollution caused by direct discharge of sewage and protecting water resources and ecological environment.

Second, the working principle

The working principle of sewage treatment equipment mainly includes three processes: physical treatment, chemical treatment and biological treatment:

1. Physical treatment: Remove large particles of solid, suspended matter and grease in sewage by means of screen, grid, precipitation and so on. Physical treatment is the first step in sewage treatment and provides a good foundation for subsequent treatment.

2. Chemical treatment: On the basis of physical treatment, by adding chemical agents, the dissolved substances in the sewage are converted into sediments or gases, so as to remove them. Common chemical treatment methods are neutralization, oxidation, reduction, precipitation and so on.

3. Biological treatment: The use of microbial metabolism to transform organic pollutants in sewage into harmless substances. Biological treatment is the core of sewage treatment, including activated sludge process, biofilm process, anaerobic biological treatment and so on.

Third, type and classification

There are various types of sewage treatment equipment, which can be divided into three categories: physical treatment equipment, chemical treatment equipment and biological treatment equipment according to different treatment processes and uses. At the same time, according to the different processing scale and processing objects, it can also be subdivided into a variety of specific models and specifications of equipment. For example, the buried sewage treatment equipment is suitable for the treatment of domestic sewage and similar industrial organic wastewater such as residential quarters, hospitals, office buildings; For the wastewater treatment of specific industries, such as textile printing and dyeing, paper making, chemical industry, etc., it is necessary to use more specialized and customized sewage treatment equipment.

Fourth, scope of application

Sewage treatment equipment is widely used in industry, urban construction, agriculture and other fields. In the industrial field, it is mainly used to treat various industrial wastewater to ensure that the wastewater is discharged or reused according to the standards; In the field of urban construction, it undertakes the important task of treating urban domestic sewage and protecting urban water environment. In agriculture, properly treated sewage can also be used as an irrigation water source.

Fifth, characteristics and advantages

Sewage treatment equipment has a variety of characteristics and advantages, such as convenient management, simple operation, low operating cost, good treatment effect, stable water quality and so on. In addition, some advanced sewage treatment equipment also has automatic control, no sludge reflux, low noise, no odor and other characteristics, further improve the practicality of the equipment and environmental protection.

Sixth, development trend

With the improvement of environmental awareness and the continuous progress of technology, sewage treatment equipment will develop in the direction of more efficient, environmental protection and intelligent. In the future, sewage treatment equipment will pay more attention to energy saving, emission reduction and resource utilization, and realize the in-depth treatment and resource reuse of sewage by adopting more advanced treatment processes and technical means. At the same time, the application of intelligent and remote monitoring technology will also make the operation of sewage treatment equipment more convenient and efficient.