The diffusion dialysis mixed acid recovery system is a high-efficiency acid recovery solution designed for the graphite industry, specifically for handling mixed acid waste streams containing hydrochloric acid, nitric acid, and hydrofluoric acid.
Using diffusion dialysis technology, the system efficiently separates and purifies mixed acids, achieving recovery rates of over 80%. The recovered acids, after reconcentration, can be returned to the graphite production process for reuse. This not only addresses high-concentration mixed acid discharge but also enables resource recovery, improving both economic and environmental performance.
The system operates on the concentration gradient between the waste solution and water as the driving force. Acid molecules preferentially migrate through an anion exchange membrane under this gradient, concentrating and purifying the mixed acids.
Due to the membrane’s selective blocking effect, metal ions and other impurities are retained in the original solution, ensuring the purity of the recovered acids. After reconcentration, the recovered acids are returned to the production process in a closed-loop system, reducing fresh acid consumption and minimizing wastewater discharge.
• High-efficiency acid recovery: Mixed acid recovery rate exceeds 80%, enabling resource reuse
• Precise separation: Effectively retains impurities and metal ions, ensuring high purity of recovered acids
• Closed-loop reuse: Recovered acids, after reconcentration, can be directly returned to graphite production
• Environmentally friendly and energy-saving: Reduces high-concentration mixed acid discharge and lowers wastewater treatment costs
• Stable industrial operation: Reliable performance suitable for continuous production
• Discharge problem solution: Effectively handles mixed acid waste streams containing HCl, HNO₃, and HF
• Graphite industry mixed acid recovery: Treats waste containing hydrochloric acid, nitric acid, and hydrofluoric acid
• Acidic wastewater resource recycling: Enables closed-loop reuse of mixed acids, reducing fresh acid consumption
• High-concentration acid discharge management: Prevents environmental pollution and meets regulatory requirements
• Fine chemical and metal processing waste acid treatment: Suitable for separation and purification of complex acidic solutions
• Industrial green production: Improves sustainability and economic efficiency of production processes
• Closed-loop acid circulation processes: Reduces wastewater discharge and enhances overall system efficiency
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