The integrated membrane treatment system for electroplating wastewater is a high-efficiency solution designed specifically for the electroplating industry. It combines membrane electrodialysis, ultrafiltration, MVR (mechanical vapor recompression) evaporation, and reverse osmosis technologies to effectively remove heavy metals and organic pollutants while enabling wastewater resource recovery.
The system concentrates heavy metals and COD in the wastewater, produces reusable freshwater, and achieves near-zero discharge, significantly reducing environmental impact and water consumption.
Electroplating wastewater first undergoes sedimentation, oxidation, and ultrafiltration pretreatment to remove suspended solids and large molecular pollutants. The pretreated water then enters a homogeneous membrane electrodialysis unit, where selective ion transport concentrates heavy metals and salts. Once the concentration reaches approximately 12%, the concentrated water is sent to the MVR evaporation system for further concentration. The recovered freshwater is treated by reverse osmosis and reused in production processes.
By combining membrane separation and evaporation technologies, the system effectively reduces wastewater volume while enabling resource recovery.
• Efficient heavy metal removal: Homogeneous membrane electrodialysis effectively separates a wide range of heavy metals and salts
• Strong wastewater concentration: Capable of concentrating wastewater up to 12% before evaporation treatment for high-strength wastewater processing
• Near-zero discharge: Recovered freshwater is treated by reverse osmosis for reuse, minimizing concentrated waste and maximizing environmental benefits
• Integrated multi-process operation: Combines sedimentation, oxidation, ultrafiltration, electrodialysis, MVR evaporation, and reverse osmosis to ensure treated water meets quality standards
• Adaptable to complex water quality: Stable and reliable operation for wastewater with high COD and complex heavy metal composition
• Electroplating wastewater treatment: Suitable for copper, nickel, chromium, and other electroplating wastewater streams
• Heavy metal recovery and concentration: Efficiently concentrates heavy metals and salts using membrane electrodialysis and evaporation technologies
• Production water reuse: Freshwater from reverse osmosis can be directly reused in electroplating processes
• Wastewater reduction and near-zero discharge: Reduces wastewater output and improves environmental compliance
• Industrial water resource optimization: Centralized treatment and recycling of complex, high-COD, high-salinity wastewater streams
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