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KY-SW20T/D
KAIYUAN
Product Description
This 20TPD double stage RO seawater desalination system is a two-pass reverse osmosis seawater desalination plant. Compared with single-stage seawater RO equipment, two-stage RO design can further reduce the TDS of produced water, realizing ultra-low salinity fresh water output. The whole set adopts skid-mounted integrated layout, including raw water pretreatment system, first-stage seawater RO system, two-stage RO polishing system, dosing system and automatic electric control cabinet.
All main frames and pipeline brackets are stainless steel. The equipment is pre-assembled and factory tested. After on-site connection of water pipes and power supply, it can be put into operation quickly. This two-stage seawater reverse osmosis plant is suitable for scenarios requiring higher purity produced water from seawater, stable long-term continuous operation, simple operation and convenient maintenance.
Product Nature
Seawater is pumped into the pretreatment system, transporting raw seawater into the sand filter tank.
Remove suspended solids, sediment, mud, organic impurities, reduce SDI value, protect subsequent RO membranes.
5μm cartridge filter intercepts fine particles. Antiscalant dosing prevents membrane scaling in high salinity seawater.
High-pressure pump pushes seawater through seawater RO membrane, removing most salt ions, heavy metals and microorganisms.
Permeate water from first RO enters second-stage reverse osmosis for deep desalination, further lower TDS to get high purity fresh water.
Final low-salinity fresh water flows out, available for high-standard drinking or industrial process water usage.
| Item | Specification |
|---|---|
| Rated Capacity | 20 Ton Per Day (20TPD) |
| System Type | Double Stage Reverse Osmosis Seawater Desalination |
| Raw Water Source | Seawater / High salinity brackish water |
| Raw Water TDS | ≤35000 ppm |
| Final Permeate TDS | ≤50 ppm (adjustable) |
| Salt Rejection Rate | ＞99.5% |
| Pre-treatment | Sand filter, security filter, antiscalant dosing tank |
| Membrane Type | 1st stage: seawater RO membrane; 2nd stage: high rejection RO membrane |
| Working Voltage | 380V / 220V, 50/60Hz customizable |
| Frame Material | Stainless Steel |
Application Fields
Small islands requiring ultra-pure drinking water, double stage RO greatly reduce residual salt, meet strict drinking standards.
Offshore research stations, marine labs, supply low TDS water for lab analysis and daily drinking.
Seafood processing, beverage factory, use two-stage RO desalinated water as production process water.
Pharmacy and cosmetic factories near seashore, need low conductivity high purity water from seawater source.
Yacht and large ships, produce high-quality fresh water for crew and passengers daily use.
Coastal mining sites, construction camps, solve fresh water shortage with high purity finished water.
Product Performance
Two-pass RO deep desalination, far better than single stage seawater RO, can reach ultra-low TDS high purity fresh water.
Combined double membrane filtration, total salt rejection >99.5%, effectively remove dissolved salts, bacteria, heavy metals and organic pollutants.
Built-in sand filter, security filter and antiscalant dosing system, reduce membrane fouling and scaling, extend membrane working life.
Central control cabinet with pressure monitoring, auto membrane flushing, overpressure / low pressure protection to protect pumps and RO membranes.
Stainless steel frame, seawater resistant high pressure pump and pipeline, long service life in high-salinity marine environment.
Pre-assembled skid design, simple on-site connection. Standard consumable parts, convenient inspection and replacement, low running cost.
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