Salt Water Purification Plant for Electroplating

A salt water purification plant for electroplating is a treatment system that converts high-TDS / brackish / saline water into low-salt, low-hardness, low-metal water suitable for plating bath make-up, rinsing, and utility use.

Untreated or brackish water contains dissolved ions (such as chlorides and carbonates) that can ruin the plating quality.

• Preventing Bath Contamination: Impurities in salt water can react with plating chemicals, leading to "bath poisoning" and the frequent need to replace expensive chemical solutions.
• Surface Quality: Purified water ensures a "spot-free" rinse, preventing mineral deposits that cause pitting, cloudiness, or poor adhesion of the metal layer.
• Conductivity Control: Accurate electroplating depends on precise electrical conductivity in the bath; removing dissolved salts allows for total control over the plating environment.

• Plating bath make-up (preparing/adjusting bath chemistry)
• Rinsing (after degreasing, pickling, plating, passivation)
• DI/DM final rinse (critical for finish quality)
• Scrubbers & utilities (less strict)

For saline / brackish raw water, the standard is:

Pretreatment + RO + EDI polishing

Why add EDI after RO?

RO typically makes "good" water, but electroplating often needs very low conductivity for final rinse and bath consistency.

1) Strong pretreatment (to protect membranes)

Plating plants often have variable raw water quality; target stable feed to RO:

Iron/manganese removal (if present)

SDI control (often UF helps)

Dechlorination before RO membranes

2) Corrosion-resistant materials

Use FRP/UPVC/PP/SS316L appropriately-salty water and plating environments are corrosive.

Small plating shop: 0.5–2 m³/hr
Medium: 3–10 m³/hr
Large OEM line: 10–50+ m³/hr

• Good rinsing + process water: Pretreatment + RO
• High finish quality / final rinse: RO + Mixed Bed DI (or EDI)
• Strict discharge rules: Add recycle + ZLD (MEE/ATFD for reject)

If you share these 5 details, we can design the suitable Salt Water Purification Plant For Electroplating

Raw water source (tapwater/brackish/borewell) + TDS

Required treated flow (LPH or m³/hr)

Plating type (Zn, Ni, Cr, Cu, anodizing, etc.)

Which use: bath make-up / rinse / final DI rinse (% split)

Guarantee
a.All systems delivered to customers are carefully examined and pipe tested.
b.All systems enjoy 12 MONTHS warranty ever since B/L date.

Technical support
a.We provide full technical support and after equipment installation.
b.We help to train operator of the system. And detailed operating manual is provided.
c.7*24 hours phone assistance on technical support.
d.We provide consumable and spare parts in the long-term for cost price.

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