Chrome Plating Tank Water Recycling Equipment

Chrome plating rinse water contains valuable chromium that is typically lost during conventional wastewater treatment processes.

Our chrome plating rinse water recovery system enables up to 99% chromium recovery and up to 95% water reuse, converting wastewater into reusable plating solution and clean rinse water.

Instead of treating chromium as hazardous waste, this system establishes a closed-loop electroplating water recycling process, significantly reducing chemical consumption, sludge generation, and environmental compliance pressure.

This solution is suitable for both hexavalent chromium (Cr⁶⁺) and trivalent chromium (Cr³⁺) plating lines.

Why Chrome Wastewater Recovery is Necessary

Chrome plating wastewater is one of the most regulated industrial effluents due to its toxicity and chemical value loss.

Key industrial challenges:

● High cost of chromium loss in rinse water

● Strict environmental discharge limits (Cr content control required)

● Hazardous sludge disposal costs

● High fresh water consumption in plating lines

● Increasing pressure for zero liquid discharge (ZLD) compliance

In conventional systems, chromium is chemically reduced and discarded as sludge, resulting in loss of valuable raw material and high operating costs.

Chrome Rinse Water Recovery Technologies

We provide two industrial-grade recovery technologies depending on your chrome process type.

1. Hexavalent Chromium Recovery System (Ion Exchange Technology)

For traditional Cr⁶⁺ plating lines, the system uses selective anion exchange resin to capture chromate and dichromate ions from rinse water.

Working principle:

Chromate ions are adsorbed by ion exchange resin

Regeneration produces concentrated chromic acid

Concentrate is returned directly to plating bath

Clean water is reused in rinsing system

Result:

Chromium recovery up to 99%

Stable bath concentration recovery

Minimal chemical waste generation

2.Trivalent Chromium Recovery System

For modern Cr³⁺ plating systems, we use high-pressure reverse osmosis (up to 120 bar) to overcome high osmotic pressure challenges.

Working principle:

● Pre-filtration removes suspended solids

● High-pressure RO concentrates chromium solution

● Permeate water is recycled to rinse tank

● Concentrate is returned to plating bath

Technical highlights:

● Operating pressure: up to 120 bar

● Chromium rejection: up to 99.8%

● Water recovery: up to 95%

● Energy consumption: 1.5–2.7 kWh/m³

Closed-Loop Process Flow

Hexavalent Chrome Recovery Process (IX System)

1. Rinse water collection from plating line

2. Pre-filtration (10 μm)

3. Ion exchange adsorption of Cr⁶⁺

4. Clean water returned to rinse tank

5. Resin regeneration process

6. Concentrated chromic acid returned to bath

Trivalent Chrome Recovery Process (RO System)

1. Rinse water collection

2. UF + pre-filtration

3. High-pressure RO concentration

4. Permeate water reuse

5. Concentrate returned to plating bath

6. Optional second-pass polishing

Key Specifications

For integrated treatment, our chromium rinse water recycle system can be configured with additional stages including UF pre-treatment, second-pass RO for boric acid removal, and evaporator for zero liquid discharge.

Closed-Loop Process Flow

Hexavalent Chrome Recovery (IX System):

Trivalent Chrome Recovery (HPRO System):

Case studies show that high-pressure RO systems achieve >99.8% rejection of chromium and sulfate, meeting requirements for direct reuse in the electroplating process.

Key Advantages

● Chrome recovery system reduces chromium chemical consumption by up to 99%.

● Closed-loop design eliminates chromium discharge into wastewater streams.

● Water reuse rate reaches up to 95%, significantly reducing fresh water demand.

● Sludge generation is reduced to near zero compared to conventional treatment systems.

● Enables compliance with strict environmental discharge regulations.

● Supports zero liquid discharge (ZLD) system integration.

● Suitable for both hexavalent and trivalent chromium processes.

Applications

Our chrome plating rinse water recovery system is widely used in:

● Automotive decorative chrome plating

● Hard chrome plating (hydraulic rods, rollers, molds)

● Aerospace components finishing

● Bathroom hardware and faucet manufacturing

● Electroplating job shops with multi-line production

● Industrial surface treatment plants

The system is suitable for both new plating lines and retrofit projects.

Why Choose JUNDA

As a professional manufacturer of electroplating and surface treatment equipment, we combine plating process engineering + water treatment technology + automation control.

Our advantages:

Factory-direct engineering design and manufacturing

Dual expertise in electroplating process + wastewater treatment

Customized system design based on plant layout

Proven industrial application experience

CE-certified environmental protection equipment

Long-term technical support and optimization service

We understand not only equipment, but also electroplating chemistry and production efficiency optimization.

FAQ

What is a chrome plating rinse water recovery system?

It is an industrial wastewater treatment system that recovers chromium from rinse water and reuses both water and chemical solution in a closed-loop process.

How does chromium recovery work?

Chromium ions are separated from rinse water using ion exchange or high-pressure reverse osmosis, then concentrated solution is returned to the plating bath.

What is the benefit of chrome recovery systems?

They reduce chromium chemical consumption, eliminate sludge disposal, and enable up to 95% water reuse in electroplating plants.

Can this system work for trivalent chromium plating?

Yes. High-pressure RO technology is specifically designed for Cr³⁺ systems with high osmotic pressure.

Contact Us

Request Engineering Proposal

Get a customized chrome recovery system design based on your plating line capacity and layout.

Get ROI Analysis

Calculate your chromium savings, water reuse benefits, and payback period.

Send Your Factory Layout

Our engineers will design a tailored closed-loop recovery solution for your production line.