1. Precise chemical dosing
Chemical wastewater usually contains complex pollutants, which need to be treated with a variety of chemicals (such as flocculants, coagulants, acid-base regulators, oxidizers and disinfectants, etc.). The dosing system can accurately control the dosage of chemicals to ensure stable treatment effect and avoid wastage of chemicals and side effects caused by over dosage.
2. pH adjustment
The pH value of chemical wastewater may fluctuate greatly, through the dosing system can accurately add acid or alkali, quickly adjust the pH value of the wastewater to the appropriate range, to provide stable water conditions for the subsequent treatment process. This is especially important for the biological treatment process, because the appropriate pH value is essential for the activity of microorganisms.
3. Promote flocculation and sedimentation
Chemical wastewater contains a large number of suspended solids and colloidal substances, the dosing system can accurately add flocculants and coagulants to promote coagulation and sedimentation of suspended solids and colloids, significantly improve the solid-liquid separation efficiency, reduce the load of the subsequent treatment unit, and improve the quality of the effluent water.
4. Remove organic matter
Chemical wastewater contains a large number of organic substances, the use of dosing system adding oxidizing agents (such as hydrogen peroxide, potassium permanganate, ozone, etc.) can effectively degrade organic pollutants, reduce chemical oxygen demand (COD) and biochemical oxygen demand (BOD), improve the biochemistry of the wastewater, and enhance the efficiency of the subsequent biological treatment process.
5. Removal of heavy metals
Chemical wastewater may contain various heavy metal ions, the dosing system can add appropriate precipitants or complexing agents, so that heavy metal ions form insoluble precipitates or complexes, removed by precipitation or filtration, thus reducing the concentration of heavy metals in the wastewater to meet the discharge standards.
6. Control foam
During chemical wastewater treatment, especially in the aeration and biological treatment stage, a large amount of foam may be generated. The dosing system can add anti-foam agent to control the generation of foam, maintain the normal operation of the treatment facilities and avoid environmental pollution and equipment damage caused by foam overflow.
7. Disinfection treatment
In the final stage of wastewater treatment, disinfection is usually required to ensure that the effluent water quality meets the standard. The dosing system can accurately inject disinfectants (such as chlorine, sodium hypochlorite, ultraviolet light, etc.) to effectively kill pathogenic microorganisms in the wastewater and ensure the safety of the effluent.
8. Improve treatment efficiency and stability
By accurately controlling the dosage and dosing time of chemicals, the dosing system can significantly improve the efficiency and stability of the wastewater treatment process. Avoid the fluctuation of treatment effect and equipment failure caused by improper dosage of chemicals, and ensure the long-term stable operation of the treatment system.
9. Reduce operating costs
The automatic control of the dosing system can reduce manual operation and lower labor costs. At the same time, accurate dosing of chemicals reduces the waste of chemicals, reduces the cost of chemicals and improves the overall economic efficiency.
10. Monitoring and optimization
Modern dosing systems are usually equipped with automatic monitoring and data recording functions, which can monitor various parameters (such as pH value, redox potential, flocculation effect, disinfectant concentration, etc.) in the process of wastewater treatment in real time, and optimize the dosing strategy according to the monitoring data to further improve the treatment efficiency and effluent water quality.