In industries such as coking, petrochemicals, pharmaceuticals, and dyes, the phenol-containing wastewater produced is complex in composition, highly toxic, and poorly biodegradable, making it a persistent challenge in industrial wastewater treatment. An advanced technology—solvent extraction, known for its high efficiency, energy savings, and ability to recover phenolic resources, has become the preferred solution for treating phenolic wastewater. As the core equipment of this process, the Zhengzhou Tiei Extraction CWL-M series centrifugal extractor, with its superior performance, provides an ideal solution for the efficient industrial application of this technology.
Why Choose the Solvent Extraction Method to Treat Phenol-Containing Wastewater?
The principle of the solvent extraction method lies in the difference in solubility of phenolic compounds between an organic solvent (extractant) and water (wastewater). Through thorough contact between the two phases, phenolic compounds in the wastewater are efficiently transferred into the organic phase, thereby achieving separation of phenols from water.The key advantages of this method include:
- High treatment efficiency: Especially suitable for the pretreatment of high-concentration (>500 mg/L) phenol-containing wastewater, it can quickly reduce phenol concentrations to low levels.
- Resource recovery: The phenol-rich solvent obtained after extraction can be further processed through distillation or other operations to recover high-purity phenolic products—turning waste into value and creating economic benefits.
- Reduced downstream load: Significantly lowers the phenol concentration in wastewater, creating favorable conditions for subsequent biochemical or advanced treatment processes and ensuring stable compliance of the final effluent with discharge standards.
High Efficient Extraction Process
The phenol-containing wastewater treatment system, centered on the CWL-M centrifugal extractor developed by Zhengzhou Tiei Extraction, features a clear, efficient, and continuous process flow:
- Mixing and mass transfer: Phenol-containing wastewater and a specific extractant are rapidly mixed inside the centrifugal extractor. Phenolic compounds quickly dissolve into the extraction phase.
- Centrifugal separation: With the aid of powerful centrifugal force, the two liquid phases achieve rapid and complete separation within seconds—far more efficient than conventional gravity settling.
- Solvent regeneration: The phenol-loaded extractant enters the subsequent stage (such as stripping), where phenols are recovered and the extractant is recycled, realizing resource recovery and reuse.
- Purified effluent: After extraction treatment, the wastewater’s phenol content is significantly reduced, enabling either direct discharge in compliance with standards or entry into subsequent biological treatment—greatly easing the load on downstream processes.
Core Advantages of the CWL-M Series Centrifugal Extractor
- High efficiency and energy saving: Features high mass transfer efficiency, short residence time, and large processing capacity. Compared with traditional column-type equipment, energy consumption can be reduced by about 30%.
- Thorough separation: The powerful centrifugal force effectively eliminates emulsification, achieving rapid and clear phase separation while minimizing solvent entrainment losses.
- Continuous and automated operation: The entire process runs in a sealed, continuous, and highly automated manner, greatly reducing manual labor intensity and operational risks.
- Compact and flexible design: With a small footprint and compact structure, the equipment is easy to integrate into existing production lines for process upgrades or capacity expansion.
- Environmentally friendly and safe: Excellent system sealing prevents unorganized VOC emissions, minimizes solvent consumption, and ensures an environmentally sustainable operation.
Zhengzhou Tiei Extraction CWL-M centrifugal extractor perfectly integrates advanced centrifugal extraction principles with reliable engineering design. It not only helps enterprises achieve stable compliance in treating phenol-containing wastewater but also turns waste into value by recovering high-value phenolic resources—making it a wise choice for achieving both environmental and economic benefits.
Email: sales@tieiextraction.com
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