Mother liquor drying machine

High-Efficiency Vacuum Distillation evaporator for Hazardous Waste Treatment

Advanced Liquid Concentration and Crystallization System for Industrial Waste Management

This state-of-the-art vacuum distillation evaporator is engineered to transform high-concentration hazardous waste into manageable solids while recovering clean distilled water for reuse or safe disposal. Designed with precision engineering and sustainable principles, it enables industries such as electroplating, chemical manufacturing, and surface treatment to comply with environmental regulations while reducing operational costs.

Key Features:

• Automated liquid intake via external pump under vacuum control for accurate dosing
• Steam-jacketed heating system ensures uniform thermal transfer without overheating sensitive compounds
• Low-temperature evaporation at 45°C under vacuum (-80 to -90 kPa) prevents thermal degradation of organic and metallic constituents
• Integrated stirring mechanism facilitates even heat distribution and efficient residue discharge post-cycle
• Condensation unit recovers pure distilled water from vaporized contaminants for reuse in production processes
• Modular design supports scalability across batch processing needs in diverse industrial applications

The core innovation lies in its ability to perform physical separation rather than chemical treatment—allowing the direct crystallization of salts, metals, and organics from concentrated effluents like electroplating rinse waters, phosphoric acid wastewater, cutting fluid emulsions, and high-salinity COD streams. By leveraging vacuum-assisted distillation, this system avoids energy-intensive boiling points and preserves valuable components that would otherwise be lost in conventional evaporation technologies. It significantly reduces the volume of hazardous sludge generated, lowering transportation and disposal expenses associated with landfill or incineration methods.

Ideal for facilities handling heavy metal-laden liquids—including copper, nickel, silver, gold, and chromium—the device offers a closed-loop solution where up to 90% of water can be recovered and reused within the plant. This makes it an essential tool for achieving zero liquid discharge (ZLD) goals in compliance-driven sectors such as PCB fabrication, metal finishing, pharmaceuticals, and oil refining. The system also excels in treating boron-containing waste, ammonium sulfate byproducts, fluorinated effluents, and mixed acid solutions common in advanced oxidation processes.

Users report consistent performance over extended periods, especially when managing complex matrices like emulsified grinding fluids or multi-component solvent mixtures. Its robust construction and automated controls minimize manual intervention, enhancing safety and operational efficiency. Many clients have noted a reduction in regulatory scrutiny due to lower hazardous waste volumes and improved documentation of material recovery rates.

Frequently Asked Questions:

How does vacuum distillation differ from traditional MVR systems? Vacuum distillation operates at sub-atmospheric pressure, allowing water to boil at temperatures as low as 45°C—ideal for preserving thermally labile substances. Unlike MVR systems that rely on mechanical compression for energy recovery, this method uses passive thermal exchange through jacketed heating, making it suitable for volatile organics and sensitive metal ions.

Can this system handle oily sludge or semi-solid residues? Yes, the integrated stirring and controlled heating process effectively breaks down viscous materials, enabling smooth discharge of solidified residues after distillation. This feature is particularly useful for treating oil-contaminated sludges from machining operations or degreasing units.

Is the distilled water suitable for reuse in production lines? Absolutely—condensed vapors are collected in a dedicated storage tank and filtered if needed. Depending on the application, the reclaimed water meets quality standards for cooling, rinsing, or dilution purposes, aligning with circular economy objectives.