Metal finishing

Unlock plating performance without wastewater constraints

Industry challenges

01

Plating chemistries are becoming harder to treat

Modern plating operations often generate rinse water containing complex chemistries, additives and chelators that keep metals dissolved in wastewater streams. These conditions can make dissolved metals harder to remove using conventional precipitation systems and require closer control to maintain stable treatment performance. ECD selectively separates dissolved metals from rinse water streams, helping treatment systems perform reliably even as plating chemistries evolve.

metals removed from wastewater

metal removal with chelators

reduction in metal variability

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02

Better rinsing can make metals harder to remove

Higher rinse rates help maintain plating quality and reduce bath contamination, but they also dilute metal concentrations in wastewater streams. Lower concentrations can make dissolved metals harder to remove using conventional precipitation systems. ECD removes dissolved metals even at low concentrations, allowing facilities to maintain optimal rinse performance without creating new treatment challenges.

increase in rinse volume

ppm dissolved metals at high rinse

removal across wide concentrations

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03

Permits can limit operational flexibility

Metal finishing facilities operate under strict discharge permits that limit dissolved metals in wastewater. As production volumes increase or plating chemistries evolve, those limits can restrict the ability to expand operations or improve rinse performance. ECD helps facilities remove dissolved metals more effectively, enabling greater flexibility within existing discharge permit limits.

reduction in evaporation volume

compliance over two years

more compliance headroom

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ECD solutions for metal finishing

ZLD enablement

Achieving zero liquid discharge (ZLD) can unlock facility expansion without the need for new discharge permits. However, dissolved metals and salts must be concentrated into as small a volume as possible for ZLD systems to operate efficiently.

ECD-powered solutions create a small, highly concentrated stream that can reduce evaporator size and energy requirements by up to 5–10×.

Expanding capacity to unlock rinse performance

Rinsing parts is at the heart of plating quality, yield and production capacity, but higher rinse rates create larger wastewater volumes and dilute metal concentrations that can challenge conventional precipitation systems.

ECD-powered solutions treat acidic rinse water directly, concentrating dissolved metals so facilities can increase rinse performance without creating additional treatment complexity.

Discharge compliance

Plating wastewater streams can change throughout the day as production shifts, baths are adjusted and chemistries vary. These changes can make it difficult for conventional treatment systems to maintain consistent discharge performance.

ECD-powered solutions automatically adapt to changing metal concentrations, helping stabilize treatment and maintain predictable discharge compliance.

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ECD solutions

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ECD technology

Most treatment systems work like coffee filters, trapping contaminants until performance declines. Electro-Ceramic Desalination works more like a kidney, continuously separating dissolved salts and metals so treatment performance becomes adaptable even in demanding wastewater conditions.

Resources

Explore Membrion resources to gain insights on solving complex water challenges.