In recent years, with the continuous advancement of industrialization and urbanization, the social economy has developed rapidly, but the subsequent pollution problem has become an important issue that needs to be solved urgently. Sewage treatment has gradually become indispensable for economic development and water resources protection. component. Therefore, vigorously developing sewage treatment technology and industrialization level is an important way to prevent water pollution and alleviate water shortages. In this process, the pump head of the peristaltic pump has also played a big factor. Maybe you don't know much about the purpose of the peristaltic pump, but I believe that after reading the following article, you will understand the role of the peristaltic pump.
Sewage treatment overview:
Sewage treatment is the process of purifying sewage to meet the water quality requirements for discharge into a certain water body or reuse. Modern sewage treatment technology is divided into primary, secondary and tertiary treatment according to the degree of treatment.
The primary treatment mainly removes the suspended solid matter in the sewage. Physical methods are commonly used. After the first-level treatment, BOD can generally be removed by about 30%, which does not meet the discharge standard. The first-level treatment belongs to the pretreatment of the second-level treatment.
The secondary treatment mainly removes the colloidal and dissolved organic matter (BOD, COD) in the sewage. Generally, the sewage that reaches the secondary treatment can meet the discharge standard, and the activated sludge method and the biofilm treatment method are commonly used.
Tertiary treatment to further remove certain special pollutants, such as phosphorus, nitrogen, and organic pollutants that are difficult to biodegrade, inorganic pollutants, and pathogens. The main methods include biological nitrogen and phosphorus removal method, coagulation precipitation method, sand filtration method, activated carbon adsorption method, ion exchange method and electroosmosis analysis method.
The working principle of peristaltic pump:
The peristaltic pump is a kind of precision transmission equipment. It is assembled by the driver, the pump head of the peristaltic pump and the silicone tube of the peristaltic pump. The liquid is transferred by squeezing the silicone tube by the pump roller. Its transmission precision and hygiene are widely Used in sewage treatment, pharmaceutical industry, etc.
Sewage treatment needs:
In the water treatment process of the factory, in order to ensure the quality of drinking water, accurate quantitative feeding is required for primary disinfection, secondary disinfection and pH control. In these processes, a pump with good sealing is required. Chemical substances such as ferric chloride, sodium hypochlorite, chlorine, carbon, lime, etc. often cause gear wear and pump blockage, resulting in a decrease in pump performance and life, especially lime and polymer electrolytes that will seriously affect the operation of the pump. , The usual solution is to replace the new pump. At the same time, the performance of the shear-sensitive flocculant will be greatly reduced when it passes through the high flow rate and tortuous pump channel.
Therefore, safe and efficient chemical dosage and transmission is the goal of every sewage treatment operation. The industry urgently needs a pump that can be used to handle demanding applications to optimize the production process, reduce maintenance work, and reduce costs and improve treatment. effectiveness. The above requirements are the advantages of peristaltic pumps.
Application in sewage treatment:
As municipal and industrial wastewater treatment becomes more specialized and complicated, the dosing, chemical delivery and product transfer operations are critical.
In sewage treatment plants, in the sodium hypochlorite feeding system, when the concentration of sodium hypochlorite needs to be diluted to 1%, it is easy to cause salt solidification in the transportation pipeline and storage tank. As gas accumulates in the system to cause various hazards, it is easy to cause gas processing problems. In this case, a pump that is not affected by gas processing and crystallization and has good chemical corrosion resistance is required. Accumulate in the pump head. Due to its own characteristics, the peristaltic pump can be easily competent in this process.