Metal finishing wastewater & recovery
Plating and finishing lines live or die by their discharge numbers. Ion exchange pulls heavy metals down to permit limits, recovers rinse water for reuse, and can recover valuable metal from your drag-out — turning a compliance cost into a partial return.
Meets your limits and recovers what's valuable.
Selective and chelating ion exchange resins capture heavy metals from rinse waters — even chelated ones that precipitation struggles with — polishing effluent to discharge limits while enabling water and metal recovery.
Capture, polish, recover, comply.
Selective resin scavenges metals from dilute rinse streams; the treated water can be recycled back to the line; captured metal and the regenerant can be routed for recovery; and the polished effluent meets pretreatment limits before discharge.
Scavenge
Selective resin captures heavy metals from rinse water.
Recover
Treated water is recycled; metal is concentrated for recovery.
Polish
Effluent is brought to local discharge limits.
Document
We keep the regenerant waste and the compliance records.
Built for finishing operations.
Serviced or owned — your choice.
Run it as a service and we own and maintain the equipment, regenerate the media offsite, and keep the paperwork — or have us engineer and build the system for you to own outright. Same engineering either way.
Common questions
Can ion exchange meet local POTW discharge limits?
Yes — selective resin polishing is a standard route to the low metal limits in categorical pretreatment standards and local sewer-use ordinances. We design to your specific permit numbers.
What about chelated metals?
Chelated copper and nickel resist conventional hydroxide precipitation. Chelating ion exchange resins are formulated to capture them, which is often the difference between passing and failing a chelated-metal limit.
Can I recover and reuse my rinse water?
Often, yes. Ion exchange lets you recycle treated rinse water back to the line and concentrate the captured metal, cutting both water purchases and discharge volume.
Do you handle the hazardous regenerant?
On the serviced model, yes — we manage the metal-bearing regenerant and the documentation. If you own the system, we design the recovery and waste handling around your operation.
Make your discharge numbers — and recover what you can.
Send your metals, rinse flows, and permit limits and we'll map a compliance-and-recovery approach — serviced or built for you to own.
Get my free assessment →No cost · No obligation · Serviced or owned