Purified Water Equipment
A merged double-stage RO page for projects where a single pass RO system cannot meet the required conductivity or purified water room standard.
Send source water, flow rate, voltage and target quality. We will confirm whether this model fits before quotation.
Factory direct supply, project configuration, packing and voltage checked before price.
| Parameter | Value |
|---|---|
| Method | Pretreatment + double stage RO system |
| RO membrane Type | 8040 / 4040 |
| Capacity | 0.25-50 T/h by project |
| Warranty | 1 year for the equipment |
| Transport Package | Wooden box / container / bulk cargo |
| Working Pressure | 0-1.5 MPa |
| Desalination Rate | 98-99% |
| Certification | CE, ISO9001, ISO14001, SGS available by project |
| Materials | FRP, stainless steel, UPVC |
| HS Code | 8421219990 |
| Power supply | Three-phase: 220/380/415V 50/60Hz |
| Control Type | Manual / Auto control |
| Origin | Shandong Province, China |
| Application | Where this equipment fits |
|---|---|
| Application 1 | Purified process water |
| Application 2 | Cleaner industrial production water |
| Application 3 | Laboratory and testing support water |
| Application 4 | Projects requiring lower conductivity than single-stage RO |
Raw water is pressurized into pretreatment and precision filtration, then passes the first-stage high-pressure pump and first-stage RO membrane. Permeate enters the second-stage high-pressure pump and second-stage RO membrane for lower final conductivity. Online conductivity monitoring and automatic flushing help stabilize operation.
Double-stage RO is used when the final permeate needs a stricter and more stable quality level than a single RO pass can provide.
The first RO permeate becomes the feed water for the second RO pass. This improves final conductivity control and makes the system more suitable for purified water rooms and cleaner process-water projects.
If the project needs ultrapure water, EDI can be added after double-stage RO as a polishing step.
| Model range | Best fit | Selection note |
|---|---|---|
| 0.25T/H Double Stage FRP RO | Small purified water demand | FRP pretreatment and double-stage RO route |
| 0.5T/H Double Stage Stainless Purified Water | Cleaner water room projects | Stainless skid option with double-stage RO logic |
| 0.5-50T/H Double Stage RO | Project capacity range | Final configuration selected by water analysis and target conductivity |
Use these checks to decide whether the route is close enough before sending water data.
Single-stage RO passes water through one RO section. Double-stage RO sends first-pass permeate through a second RO section for lower final conductivity.
No. Double-stage RO improves conductivity, while EDI is an additional polishing route when the project requires ultrapure water.
Send capacity, application, water analysis report, product water target, voltage and optional modules such as EDI, ozone, pasteurization or UV.
Use the route cards to avoid comparing the wrong equipment family before water data is checked.
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