Treatment of industrial waste salt
Thread Content
The treatment of industrial waste salts is a current challenge and hot topic in the chemical industry. Utilizing ion-exchange membrane electrolysis to make efficient use of waste salts represents an excellent solution. Is there any use of industrial waste salts in electrolysis within the chlor-alkali industry at present? How to process industrial waste salt to meet the requirements of ion-exchange membrane electrolysis?
There are various approaches to treating industrial waste salts, and the challenge lies in finding a disposal method that is \"technically simple and low-cost\".
It is understood that electrochemical oxidation is currently used in industrial waste salt treatment technologies, but it is unknown what the extent of its application is.
At least for now, the salts from our epoxy resin industry are all used in the printing and dyeing industry. And it’s difficult to handle. I also want to find a way to remove the organic substances from the salt.
There are too many types of organic substances, and different ones require different treatment methods; it is not a simple task. Ion exchange membranes are quite sensitive to organic substances.
We are capable of reducing the organic content in the by-product salt to below 10 ppm, meeting the requirements for use in chlor-alkali production. But not all organic substances can be processed; it depends on what kind of organic substance it is
What method did you use? Burn it?
Do you have any introductory materials on this topic? If it’s convenient, could you send it to me so I can study it? Thank you! xueyunfei@sinochem.com.
The microwave pyrolysis treatment technology for industrial waste salts is based on continuous, stepped microwave multi-stage pyrolysis; under precise temperature and oxygen atmosphere control, the organic substances in the waste salts are oxidized and decomposed, resulting in the breakdown of these organic compounds into smaller molecular substances. The TOC concentration in the waste salts after microwave pyrolysis can be reduced to below 10 ppm, and after processes such as dissolution, filtration, and crystallization, they meet the standards for industrial use as salts. New and existing customers are welcome to inquire. Contact numbers: 0531-88800923/15552575223/13789821119 (WeChat available as well).
We employ a new technology for treating waste salts – the microwave pyrolysis method for the resource utilization of such salts. This approach requires only electricity, is modular in design, has low energy consumption, prevents coking of the equipment, stops salt from clumping together, and allows for precise temperature control. It can be widely used for dealing with waste salts (NaCl, NaSO4) in the pesticide industry, pharmaceutical industry, chemical industry, printing and dyeing industry, and petroleum processing industry. After treatment, the TOC level of these waste salts is less than 10 ppm.