During pesticide production, the discharged wastewater often contains high concentrations of phthalic acid and other benzene derivatives. This type of wastewater is complex in composition, highly toxic, and poorly biodegradable. Traditional treatment methods are costly and struggle to achieve both purification and resource recovery.Today, through solvent extraction technology, we can not only achieve compliant wastewater purification but also turn the phthalic acid in the water from waste into value.
As an organic acid, phthalic acid can exist in molecular form under specific pH conditions. By exploiting its solubility differences between phases, specialized extractants can be selected to achieve:
Precise capture: The extractant exhibits high selectivity toward phthalic acid molecules, effectively “grabbing” them from complex wastewater.
Efficient enrichment: Using high-efficiency centrifugal extraction equipment, low-concentration phthalic acid can be enriched dozens of times in the organic phase.
Resource recovery: The enriched phthalic acid can be recovered through stripping, obtaining high purity that allows direct reuse or sale as a by-product, generating economic benefits.
Tiei Extraction Centrifugal Extraction Process
The CWL-M Series Centrifugal Extractor, with its unique advantages, perfectly addresses the common issues of traditional extraction equipment when treating pesticide wastewater—such as emulsification, poor phase separation, and low efficiency.
1.Powerful demulsification, clear phase separation
Pesticide wastewater has a complex composition and is prone to emulsification. The ultra-gravity field generated by the centrifuge instantly breaks the emulsion, achieving rapid and thorough separation of the oil and water phases, and solving the problem of entrainment.
2.High mass transfer efficiency, rapid extraction
The high-speed rotating drum enables instantaneous and thorough mixing of the two-phase liquid. Its mass transfer efficiency far exceeds that of traditional equipment. The single-stage extraction efficiency is extremely high, which greatly reduces the number of equipment units.
3.Continuous operation, automated control
The fully enclosed continuous countercurrent process realizes automated operation, reduces manual intervention and ensures stable operation.
4.Strong resistance, stable and reliable
Designed specifically for chemical wastewater characteristics, the Centrifugal Extractor is corrosion-resistant and clog-resistant. It can adapt to fluctuations in pesticide wastewater quality, ensuring long-term, stable operation.
Tiei Creates Greater Value for You
Economic benefits: Transform costly wastewater treatment expenses into profitable resource recovery, shortening the investment payback period.
Environmental compliance: After the pre-recovery of phthalic acid, the wastewater’s COD is significantly reduced, easing the load on subsequent biochemical treatment and ensuring stable compliance of the final effluent.
Energy saving and emission reduction: Achieve internal material recycling, reducing pollutants at the source and enhancing the company’s green and sustainable image.
Welcome contact us for more details
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820
