With the rapid development of global industrialization, industries such as coal chemical, petrochemical, pharmaceutical, and agrochemical have generated large volumes of high-concentration phenolic wastewater during their production processes. Due to its high toxicity, poor biodegradability, and significant environmental hazards, phenolic wastewater has become one of the key industrial pollution sources receiving worldwide attention in environmental protection and wastewater treatment. How to treat high-concentration phenolic wastewater efficiently and economically while achieving resource recovery and compliant discharge has become an important issue for the sustainable development of industrial enterprises.

As a professional manufacturer specializing in liquid-liquid extraction separation equipment, Zhengzhou Tiei Extraction Technology Co., Ltd. is committed to providing customers with efficient, reliable, and intelligent solutions for phenolic wastewater treatment. The company's core product, the CWL-M Series Centrifugal Extractor, has been successfully applied in numerous high-concentration phenolic wastewater treatment projects, thanks to its outstanding extraction efficiency, fully enclosed operation, and flexible parameter adjustment capabilities.

Challenges in High-Concentration Phenolic Wastewater Treatment

Traditional phenolic wastewater treatment methods, such as adsorption, biological treatment, and chemical oxidation, often face challenges including low treatment efficiency, high operating costs, and secondary pollution when treating high-concentration wastewater.
Solvent extraction, with its advantages of large processing capacity, high efficiency, and the ability to recover phenolic compounds, has been widely used in the pretreatment stage of high-concentration phenolic wastewater. However, conventional extraction equipment, such as mixer-settlers and extraction columns, suffers from disadvantages including large installation footprints, limited extraction efficiency, and significant solvent entrainment losses.

CWL-M Centrifugal Extractor: Core Operating Principle

The CWL-M Series Centrifugal Extractor is a high-efficiency equipment designed based on the principle of liquid-liquid extraction and separation. Its core operating process is as follows:

1.Mass Transfer Through Mixing
High-concentration phenolic wastewater (aqueous phase) and the extractant (organic phase) enter the extractor at a specified ratio. Under the action of the high-speed rotating drum, the two phases are thoroughly mixed to form an emulsion consisting of a dispersed phase and a continuous phase. During this process, phenolic compounds are efficiently transferred from the aqueous phase into the organic extractant, achieving effective interphase mass transfer.

2.Centrifugal Separation
Under the high-speed centrifugal force field, the mixed liquid is rapidly separated within an extremely short time according to the density difference between the aqueous phase and the organic phase. One phase is the phenol-rich extractant (light phase), while the other is the dephenolized wastewater (heavy phase).

3.Continuous Discharge
The separated phases are continuously discharged through their respective outlets, ensuring uninterrupted extraction operation.

Key Advantages of the CWL-M Centrifugal Extractor

1.Ultra-High Extraction Efficiency: The powerful centrifugal force enables more intensive contact between the two phases and much faster separation. Compared with traditional equipment, extraction efficiency is significantly improved, making it especially suitable for high-concentration phenolic wastewater treatment.

2.Extremely Low Solvent Entrainment: High-precision phase separation effectively minimizes solvent entrainment into the aqueous phase, significantly reducing solvent consumption and operating costs.

3.Fully Enclosed Operation for Safety and Environmental Protection: The fully enclosed design prevents the leakage of hazardous gases and solvent evaporation, protecting operators' health while meeting stringent environmental protection requirements.

4.Compact Footprint: Featuring a compact structure and large processing capacity, the equipment occupies far less space than mixer-settlers or extraction columns with the same treatment capacity, reducing infrastructure investment.

5.Excellent Process Adaptability: The centrifugal extractor can handle phenolic wastewater with varying concentrations and flow rates. Its rotational speed can be flexibly adjusted according to operating conditions to achieve optimal separation performance.

6.High Degree of Automation: Continuous feeding, mixing, separation, and phase discharge are integrated into one continuous process, making the system easy to automate and suitable for remote monitoring, thereby reducing labor costs.

Application Areas

The CWL-M Centrifugal Extractor has been successfully applied in the following high-concentration phenolic wastewater treatment applications:

Coal Chemical Industry: High-concentration phenolic wastewater generated from coal gasification, coal coking, and coal liquefaction processes.
Petrochemical Industry: Phenolic wastewater discharged from oil refining and aromatic hydrocarbon production units.
Pharmaceutical and Agrochemical Industries: Phenolic organic wastewater generated during chemical synthesis processes.
Phenolic Resin Production: Process wastewater and cleaning wastewater containing phenolic compounds.
Fine Chemical Industry: Wastewater generated during the production of various phenolic intermediates.

Zhengzhou Tiei Extraction Technology Co., Ltd. is always driven by technological innovation and is committed to providing efficient and reliable liquid-liquid extraction and separation solutions for customers worldwide. Our CWL-M Series Centrifugal Extractor has been operating reliably in high-concentration phenolic wastewater treatment projects across multiple countries and regions, helping customers achieve both compliant wastewater discharge and valuable resource recovery.
If you are facing challenges in treating high-concentration phenolic wastewater, please feel free to contact us.
Email: sales@tieiextraction.com
Whatsapp: +86 19069612820