Reverse Osmosis Deionizer for Coolants

A Reverse Osmosis Deionizer for coolants is a water treatment unit that produces low-conductivity, low-mineral water used to make up or dilute industrial coolants-such as water-glycol, machining coolants, closed-loop chiller water, and heat-transfer fluids.

• Prevents scale & deposits: removes calcium/magnesium and silica that form scale on heat exchangers and pipes.
• Reduces corrosion risk: lowers chlorides/sulfates and stabilizes water chemistry (with proper inhibitors).
• Improves heat transfer: cleaner surfaces = better cooling efficiency.
• Extends coolant life: fewer ions and contaminants slow coolant degradation and reduce sludge/biofouling.
• More consistent mixing: stable water quality improves repeatability from batch to batch.

(Depends on system type and OEM specs)

• Low conductivity (commonly tens of µS/cm or lower for closed loops)
• Very low hardness (often near zero)
• Low chloride/sulfate
• Low silica (important for high-temp or sensitive heat exchangers)

1. Pretreatment

Sediment / multimedia filter (particles)

Activated carbon (chlorine/chloramine, organics) if on municipal water

Softener or antiscalant (if hardness/silica is high)

2. Reverse Osmosis (RO)

Removes most dissolved salts and organics

3. Deionization (DI) polishing

Mixed-bed DI or separate cation/anion beds to reach low conductivity

4. Optional add-ons

UV sterilizer / biocide strategy (if biological growth is an issue)

Final cartridge filter (1–5 µm) for cleanliness

Storage tank + recirculation loop (helps keep quality stable)

• Coolant type & use: closed-loop HVAC/chillers vs metalworking coolants vs water-glycol have different needs.
• Required makeup flow (m³/hr or L/min) and daily volume.
• Raw water report: TDS, hardness, silica, chloride, alkalinity, iron/manganese.
• Target water spec: conductivity/resistivity + limits for chloride, hardness, silica.
• Materials & controls: corrosion-resistant piping, conductivity monitoring, automatic DI changeover (if needed).

If you tell me:

(1) coolant type

(2) required flow

(3) raw water TDS/hardness/silica (or a water analysis)

(4) target conductivity or OEM spec

I can suggest a suitable Reverse Osmosis Deionizer For Coolants

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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