Chemical wastewater will pollute the environment and threaten the ecosystem and human health if discharged directly because of the chemicals and toxic substances it contains. Therefore, effective wastewater treatment is the key to realize sustainable development. As a supplier of environmental protection materials, Yuxinhuan's products such as Polyaluminum chloride(PAC) and Polyacrylamide(PAM) play an important role in chemical wastewater treatment.
(1) Physical method:
Gravity precipitation method: using gravity field to precipitate suspended particles, PAC as coagulant, can accelerate the coagulation and precipitation of suspended matter to improve the treatment efficiency.
Filtration method: PAM as coagulant aid can enhance the retention capacity of the filtration layer and remove more insoluble impurities.
Air flotation method: Combined use of PAC and PAM can further improve the removal rate of suspended solids.
Membrane Separation Technology: Although membrane separation technology itself does not directly involve PAC and PAM, the use of these two products in the pre-treatment stage can improve the service life of the membrane and the treatment effect.
(2) Chemical method:
Neutralization method: PAC and PAM can be used as auxiliary agents when adjusting the pH value of wastewater to ensure that the wastewater reaches a neutral level.
Coagulation: PAC is a commonly used coagulant, which can effectively remove colloidal substances and suspended matter in wastewater, and PAM can be used as a coagulant aid to enhance the coagulation effect and form larger flocs for easy precipitation.
Redox method: Although PAC and PAM are not directly involved in the redox reaction, they can remove part of the organic matter in the pretreatment stage to create favorable conditions for the subsequent redox reaction.
Electrochemical method: When treating wastewater by electrochemical method, PAC and PAM can be used as auxiliary agents to improve the electrolysis efficiency and pollutant removal rate.
(3) Biological method:
Aerobic biological treatment method: including biofilm method and activated sludge method, using the metabolic action of microorganisms to remove organic matter.
Anaerobic biological treatment method: using the degradation effect of anaerobic microorganisms to remove pollutants.
Aerobic biological treatment: PAC and PAM in the pretreatment stage to remove difficult to degrade organic matter, help the growth and metabolism of microorganisms, improve the efficiency of biological treatment.
Anaerobic biological treatment: Similarly, the use of PAC and PAM in the pretreatment stage can reduce the burden of anaerobic microorganisms and improve the degradation efficiency.
(4) Currently Emerging Technologies:
Microelectrolysis treatment: PAC and PAM can be used as auxiliary agents for microelectrolysis materials to improve electrolysis efficiency and pollutant removal rate.
Artificial wetland: In the artificial wetland treatment system, the use of PAC and PAM in the pretreatment stage can remove part of the organic matter and suspended solids, reduce the burden of wetland plants and improve the treatment effect.
Comprehensive sewage treatment case of a chemical industrial park in a certain city
Case overview:
There are numerous production enterprises with different products in a chemical industrial park in a certain city. The wastewater quality is complex and organic matter is difficult to degrade. The park adopts a quality based pretreatment method, combined with various sewage treatment processes, to achieve effective treatment of wastewater.
Handling method:
① In the comprehensive wastewater treatment case of this chemical park, PAC and PAM are widely used in the pretreatment stage.
②Through the pretreatment process of conditioning, coagulation and precipitation and ozone catalytic oxidation, combined with the use of PAC and PAM, the suspended matter, colloidal material and difficult to degrade organic matter in the wastewater are effectively removed. Subsequent treatment processes such as hydrolytic acidification, A2O, secondary sedimentation tank, and high-efficiency sedimentation tank further remove pollutants.
③Finally, ozone catalytic oxidation depth treatment and activated carbon filtration process are used to ensure that the effluent water quality meets the emission standards.
Conclusion:
Combined with Yuxinhuan's Polyaluminum chloride(PAC) and Polyacrylamide(PAM) products, the chemical wastewater treatment process is more efficient and reliable.
These products not only improve the efficiency and quality of wastewater treatment, but also reduce environmental pollution and ensure the stable development of the chemical park.
In the future, with the promotion of technological innovation and environmental protection policies, the chemical wastewater treatment industry will usher in more development opportunities and make greater contributions to water resources and environmental protection.
