Description

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An EDI water treatment system for cosmetics is a high-purity water plant (usually RO + EDI) that produces very low-salt, zero-hardness, clean water for cosmetic manufacturing-ideal for products like creams, lotions, shampoos, serums, wet wipes, and face masks.
EDI is used as a "polishing" step after RO to get more stable, higher purity water than RO alone-without acid/caustic regeneration.

Where Edi Water Is Used In Cosmetics

Solution / batch preparation (water is the main ingredient)
High-sensitivity products (clear gels, serums, baby products)
Rinse water (final rinse for tanks/fillers)
Utilities where consistency matters (some plants use RO water for general wash, RO+EDI for product water)

Typical EDI Water Treatment System For Cosmetics

A common, reliable configuration:

Raw Water Tank

→ Multimedia/Sand Filter (MMF)

→ Activated Carbon Filter (ACF) (chlorine/odor/organics removal)

→ Water Softener (or antiscalant dosing)

→ Precision Filter (5 µm)

→ Double Pass RO

→ UV (optional)

→ EDI

→ UV (recommended)

→ SS316L Purified Water Tank

→ Ozone dosing (recommended)

→ Recirculation loop to mixing / filling

Why UV + ozone + loop?
Cosmetics are very sensitive to microbial growth in storage tanks and pipes. A recirculation loop + ozone/UV helps keep water stable.

Typical Quality You Can Expect (practical Ranges)

(Depends on raw water and design)

Conductivity: ~0.05–0.2 µS/cm after EDI
Very low TDS, hardness ~ zero
With good hygiene controls: very low microbial risk

Cosmetic brands may specify their own internal limits for conductivity, microbes, odor, and metals.

When EDI is worth it vs RO-only

Choose RO-only if:

Products are not very sensitive
You use preservatives robustly
You consume water quickly (low storage time)

Choose RO + EDI if:

You make clear products (serums/gels), baby products, wipes/masks
You need very consistent batches across seasons
Raw water quality varies
You want longer storage stability and fewer quality issues

Key Design Points (most Important In Cosmetics)

Hygienic post-RO design

SS316L tank & piping after RO/EDI

sanitary valves, minimal dead-legs

Microbial control

UV + ozone + continuous recirculation

Tank vent filter (0.2 µm)

Good pretreatment

Protect RO membranes (turbidity, chlorine, hardness)

Monitoring

Online conductivity/resistivity

Routine micro testing at tank & points-of-use

If you tell me these 3 things, I can suggest the most suitable EDI Water Treatment System For Cosmetics

Required flow (LPH or m³/hr)
Raw water source + TDS/hardness (if known)
Products (shampoo/cream/serum/wipes/mask) and whether water is stored long hours