Waste fluoroplastics are also known as "hazardous waste", "toxic waste residue", and its English name is "hazardous waste". Hazardous characteristics of waste fluoroplastics, including corrosivity, acute toxicity, leaching toxicity, reactivity, contamination, radioactivity, etc.

The Resource Conservation and Recovery Act (RCRA) regulations in the United States define corrosive waste:

① Water-bearing waste, pH <2 or pH> 12.5 measured according to standard methods.

Liquid waste, according to a standardized test method, measured at a test temperature of 55°C, has a corrosion rate of (SAE1020)> 6.35ram(0.250 inches)/year.

The disposal and pollution prevention system of waste fluoroplastics includes the whole process of production, collection, transportation, classification, detection, packaging, comprehensive utilization, storage, treatment and disposal of waste fluoroplastics.

In the production process of petroleum, chemical, metallurgy, electric power, pharmaceutical, pesticide, food, chlor-alkali, environmental protection and other industries, the economic losses caused by the corrosion of various chemical media to equipment, pipelines and accessories are very huge. According to relevant information, the annual loss caused by corrosion accounts for about 3% to 4% of the total output value of the national economy, far exceeding the losses caused by various natural disasters; the annual waste generated by corrosion, the leakage of chemical substances and the accidents caused by corrosion not only affect the health of the staff, but also seriously threaten the life safety of the recovery of fluorine plastics. Moreover, the damage to the natural environment and ecological balance is even more shocking. The selection and application of good anti-corrosion materials to extend the service life of process pipelines and equipment is particularly important in the treatment of waste fluoroplastics.

The treatment and disposal process of waste fluoroplastics generally includes the collection and transportation of waste fluoroplastics, classified temporary storage and exchange, comprehensive utilization, physical and chemical treatment, stabilization and solidification, incineration and safe landfill.

Comprehensive Utilization of Recycled Fluoroplastics

According to the statistical results of the registration data, the comprehensive utilization rate of waste fluoroplastics in China has reached 45.4 percent.Recycling fluoroplasticsA breakthrough has been made in the practice of comprehensive utilization. Through chemical reaction, sedimentation separation, filtration, electrolysis, evaporation and other processes, a small amount of precious metals such as gold, silver, copper, nickel and lead contained in the waste liquid are refined or made into corresponding salt products.

This article comes from:www.tflpfa.com

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