What are the common high-concentration, high-COD, and high-salt wastewaters currently used in industry?

Hydroxypropyl methylcellulose HPMC, sodium carboxymethylcellulose CMC industry salt: The main raw materials for HPMC production from sodium chloride are refined cotton, sodium hydroxide, alkyl chloride, propylene oxide, etc. During the production reaction process, sodium chloride is produced as a by-product, and the discharged wastewater contains high sodium chloride content. As a thickening agent for food, CMC is widely used in milk, toothpaste and other products. The main production raw materials are chloroacetic acid, ethanol, and sodium hydroxide. The company produces high-concentration salt-containing organic wastewater during the CMC production process. The wastewater is weakly acidic, yellow in color, and contains a small amount of CMC impurities and ethanol. The main components of the wastewater are sodium chloride and sodium glycolate (sodium glycolate). The total solid content is as high as 30%, and the COD is as high as 70,000m/L. If not treated properly, it will cause serious pollution to the environment. CMC wastewater contains a large amount of salt, and the traditional wastewater treatment process cannot meet environmental protection requirements, so the wastewater needs to be pretreated by desalination. If these two salts can be refined and recycled, it will have certain economic benefits. According to the different solubility of different salts in the solution, we use a multi-effect evaporator secondary evaporation and crystallization process to recover the salt in the wastewater. The evaporated liquid only contains a small amount of alcohol and can be discharged up to standard after biochemical treatment.

Salt content in epoxy resin production industry: The difficulty of treating sodium chloride epoxy resin wastewater mainly lies in two aspects:: One is the separation of aging resin in waste water, and the other is that the water contains a large amount of NaCl and partially unreacted NaOH, which is difficult to handle. According to the characteristics of the wastewater, oil-water separation equipment is first used to separate the aged resin in the wastewater, and the remaining high-salt wastewater is subjected to wastewater evaporation, concentration and crystallization equipment. Separate low boiling point organic matter and high boiling point salts. The condensed water generated by evaporation enters the biochemical treatment system or is used in less demanding reuse process sections.

OK, where is your factory? lol

You can give it a try{:1_90:}

The COD is okay. I used to process wastewater with a COD of 200,000 and it was able to be reduced to about 20,000. But what are the main components of the blue carbon wastewater?

You can try {:1_90:}

Try wastewater from food factories, brewing factories, biochemical pharmaceutical factories, and meat processing plants. That would be more challenging. Those in industry can try PTA wastewater, refinery desalination wastewater, and coking plant wastewater. It's easy to find them, they are everywhere.

Rubber accelerator production industry salt: Sodium chloride rubber accelerator is developed * * developing * * Transfer production results. The main raw material of rubber accelerator is aniline, as well as some cyclic amines, sodium hypochlorite, etc. Generally, its semi-finished products are M, CA, etc. Most of the effluent has high alkalinity, mainly because the reaction conditions are under alkaline conditions. The salt content is high, mainly sodium chloride after the reaction of sodium hypochlorite. We use evaporation crystallization process to recover sodium chloride waste salt. The condensed water enters the biochemical system for further treatment.

Your company's wastewater can use our company's technology electrodialysis to help you solve the problem. If necessary, please contact me at 15088793370