Metal Finishing & Electroplating
Reduce Electroplating Wastewater Volume and Disposal Costs
Customized evaporation, concentration and ZLD solutions for metal-bearing rinse water, plating bath drag-out and segregated high-strength wastewater.
Why This Wastewater Is Difficult
Recommended Treatment Approach
A typical evaluation begins with stream segregation and conventional metal removal where appropriate. Low-temperature vacuum evaporation can then reduce liquid volume and recover distillate. Concentrate may require stabilization, off-site disposal or further crystallization depending on salt composition and the project objective.
Suitable Applications and Important Limits
Suitable candidates may include segregated plating rinse water, bath drag-out, ion-exchange regeneration wastewater and membrane reject. Cyanide-, chromium(VI)- or volatile-containing streams require specific safety and pretreatment review.
Actual volume reduction, energy use, distillate quality and concentrate condition depend on feed composition and operating conditions. Local reuse or discharge requirements must be confirmed for each project.
Technology Options
Low-Temperature Vacuum Evaporation — wastewater minimization and distillate recovery.
Scraped Vacuum Crystallization — further concentration of scaling, viscous or crystallizing feeds.
Integrated ZLD — pretreatment, evaporation, crystallization, separation and polishing as required.
Information Needed for Evaluation
Metals, anions, COD/TOC, complexing agents, pH, conductivity/TDS, daily volume, current treatment, discharge or reuse target.
For complex or variable wastewater, GRELLIX recommends a representative sample and bench or pilot testing before final equipment selection.
Tell Us About Your Wastewater
Upload your analysis, daily capacity and treatment objective for a preliminary engineering review. Your process information will be used only for technical evaluation.