On the treatment of phosphate wastewater
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Our company used to handle phosphorus-containing wastewater, which was in the form of phosphoric acid. The client used this substance for rust removal; the product was taken out of the phosphoric acid tank and then rinsed, and the wastewater generated as a result contained phosphoric acid. Now the problem is that no matter whether I add lime, ferric chloride, phosphorus removal agents, or use activated carbon for adsorption, the total phosphorus content in the water remains above 50 mg/L, and sometimes even exceeds 100 mg/L. The environmental protection authorities are also keeping a close eye on this issue. I’m at a loss now and hope that those of you here can share your opinions and suggestions. Thank you!
Hello, does your company have any samples of waste acid? Could we allow our company to conduct a trial? If it’s feasible, we can discuss further. You can reach us at the email address 15301501561@163.com
If further improvement in the phosphate removal rate is desired, ion exchange resins can be used to ensure compliance with discharge standards at the end; the high-concentration phosphorus-containing wastewater resulting from the regeneration of these resins can then be returned to the pretreatment stage. We specialize in resins, and I personally believe that using high-quality anhydrous resins can solve the problem. We can carry out relevant pilot tests here; if needed, please contact 18969098391@163.com
You can try ion exchange resin.
Perhaps the residence time of your reaction is too short; stirring the reaction for more than 3 hours can reduce the total phosphorus level to below 50 mg/L.
The use of a CWL-type centrifugal extraction machine for removal can be considered