Printed Circuit Board Manufacturing
Reduce PCB Wastewater Volume and Recover Water
Customized evaporation and ZLD solutions for segregated high-strength PCB wastewater, metal-bearing streams and membrane concentrate.
Why This Wastewater Is Difficult
Recommended Treatment Approach
Effective projects normally begin with stream segregation. Metal recovery or precipitation is applied where appropriate, followed by clarification, membrane treatment or vacuum evaporation. High-strength concentrate and RO reject can be evaporated to recover distillate and reduce final liquid waste. Crystallization may be considered when salt saturation is approached.
Suitable Applications and Important Limits
Potential feeds include segregated copper- or nickel-bearing wastewater, chemical copper streams, developer or cleaning wastewater after compatibility review, and RO reject. Cyanide, fluoride, ammonia and volatile organics require specific assessment.
Actual performance depends on feed composition, operating conditions and the required reuse or discharge objective. Representative testing is recommended for complex or variable streams.
Technology Options
Low-Temperature Vacuum Evaporation — liquid-waste minimization and distillate recovery.
Scraped Vacuum Crystallization — further concentration of scaling, viscous or crystallizing feeds.
Integrated ZLD — pretreatment, evaporation, crystallization, separation and polishing.
Information Needed for Evaluation
Copper, nickel and other metals; COD/TOC; ammonia; fluoride; cyanide if applicable; chelating agents; anions; pH; TDS; daily volume; and required water quality.
Tell Us About Your Wastewater
Upload your analysis, daily capacity and treatment objective for a preliminary engineering review. Your information will be treated as confidential.