Fluorocarbon Salt Wastewater Treatment
Fluorocarbon salt wastewater is the wastewater produced in the production and processing of fluorocarbon salts. Due to the complex composition of fluorocarbon salt wastewater, it is necessary to determine the wastewater treatment process according to the wastewater treatment object, the type of wastewater and its water quality. Because the water quality and main pollutants of the fluoride-containing wastewater vary greatly, the actual practice should be based on the characteristics of the wastewater treatment object, and each process should be comprehensively evaluated, time- and space-saving, and cost reduction. The principle of selection.
Fluorocarbon salt wastewater contains a variety of pollutants, such as heavy metals and organic pollutants, and its water quality is complicated. In the process of wastewater treatment, it is more important to understand the main components of the wastewater, and to select the wastewater treatment technology and process reasonably according to the requirements of wastewater treatment.
Fluorocarbon salt wastewater treatment process:
The pre-treatment process includes homogenization and removal of suspended solids, grease and colloidal substances. Chemical and physical processes can be used for pre-treatment, such as coagulation, sedimentation, air flotation, filtration, and the like.
The biochemical treatment process mainly includes aerobic treatment and anaerobic treatment processes. Aerobic treatment uses microorganisms to oxidize organic matters in wastewater under the condition of oxygen supply. The commonly used aerobic treatment can be aerobic biochemical reaction tank, aerobic suspended biological contact oxidation or biological granular activated carbon reaction tank. In the actual treatment, the process units can be used in combination according to the raw water quality and the required treatment effect. Generally speaking, a hydrogen sulfide removal process should be adopted in the front-end of the aerobic biochemical process, including alkaline precipitation and nitrate reduction.
The anaerobic treatment process removes the easily degradable metabolites in the wastewater under anaerobic conditions, including anaerobic fixed bed, anaerobic suspended film, anaerobic contact oxidation tank, flash anaerobic oxidation tank, and high rate anaerobic reaction tank.
After pretreatment and biochemical treatment of fluorocarbon salt wastewater, the treatment process of final effluent mainly adopts chemical coagulation, sedimentation, microfiltration, or ultrafiltration membrane process, etc.
It is worth noting that the characteristics of heavy metal-containing wastewater are specific, and the treatment should be processed as much as possible to avoid secondary pollution. It is usually treated by chemical precipitation (including complex precipitation and adsorption), ion exchange and membrane separation methods. When selecting treatment technology, it is necessary to comprehensively evaluate the contaminants, concentration and pH value of wastewater, and consider the wastewater load, transportation and its use for reuse or drainage purposes.
In conclusion, waste water generated from the production and processing of fluorocarbon salts requires a comprehensive multifaceted approach for treatment. Pretreatment and biochemical treatment processes to remove suspended solids, grease, and colloidal substances with physical or chemical processes should be used, followed by aerobic or anaerobic treatment as appropriate. Finally, chemical coagulation, sedimentation, microfiltration, or ultrafiltration membrane processes are used to effectively remove heavy metals and pollutants from the wastewater.
