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SWRO Desalination Systems Indonesia
Updated
SWRO seawater desalination systems from PT Beta Pramesti Asia, Indonesia: design, pretreatment, energy recovery, fabrication, installation, O&M and project references.
SWRO desalination systems for industry and power plants
An SWRO (seawater reverse osmosis) desalination system turns seawater into fresh water through pretreatment, high-pressure reverse osmosis membranes, energy recovery and post-treatment. PT Beta Pramesti Asia designs, fabricates in its Cikupa workshop, installs and supports SWRO plants for power stations, industry and coastal sites in Indonesia, with references including Bimoli Tanjung Priok SWRO and the PLTU Barru II desalination plant.
DuPont’s FilmTec RO/NF technical manual, revised February 2026 treats feedwater analysis, pretreatment, system design, operation, troubleshooting and cleaning as connected RO controls. Beta applies that data-led approach within the membrane supplier’s limits and the project’s intake, product-water and concentrate conditions.
Technically reviewed: 12 November 2026.
A desalination plant is sized from feedwater and product demand
A reliable desalination plant is more than an RO skid. Design starts with representative seasonal seawater analysis, production capacity, operating hours, product-water targets, and a feasible concentrate route. These inputs determine the intake type, coagulation or ultrafiltration needs, SWRO configuration, post-treatment, pump redundancy, and instruments that operators must monitor. Potable use requires post-treatment and verification against the applicable requirements; the World Health Organization’s desalinated drinking-water guidance treats source-water control, treatment, remineralization, storage, and distribution as one water-safety system. Beta therefore develops each proposal from project data rather than applying one generic specification.
The SWRO process runs from intake to finished water
Each stage protects the next one. Pretreatment stabilizes membrane feed, SWRO separates dissolved salts, and post-treatment adjusts the product water for its intended use.
| Stage | Design purpose | Inputs reviewed |
|---|---|---|
| Intake and screening | Draw seawater and exclude coarse debris | Bathymetry or beach-well conditions, tides, debris, and maintenance access |
| Pretreatment | Control solids, colloids, organics, and fouling risk | Turbidity, SDI, TSS, organics, microbiology, and seasonal variation |
| High-pressure SWRO | Separate most dissolved salts from water | TDS, temperature, production target, design recovery, and membrane limits |
| Post-treatment | Adjust stability and quality for end use | Conductivity, pH, mineral, disinfection, and process-water targets |
| Concentrate system | Manage brine for the site conditions | Flow, salinity, discharge route, permits, and receiving environment |
Betaqua SWRO preliminary specification range
These figures support early project discussions; they are not guaranteed design values. Final selections follow feedwater analysis, seasonal review, and the agreed operating basis.
| Parameter | Available preliminary range |
|---|---|
| Product capacity | 1-500 m³/day; other capacities can be assessed |
| Seawater feed TDS | 30,000-45,000 mg/L |
| Preliminary permeate TDS target | Below 500 mg/L, then adjusted for the required end use |
| Preliminary recovery | 35-45%, depending on feedwater quality and temperature |
| Operating pressure | 55-70 bar, subject to membrane configuration |
A configuration can include FilmTec or Toray membranes, high-pressure pumps, an energy recovery device (ERD), PLC controls, and conductivity, pressure, and flow monitoring. Membrane elements and pressure vessels are available from PT Watermart Perkasa (water.co.id), our sister company and the official distributor of DuPont FilmTec in Indonesia: see FilmTec seawater membranes, Toray seawater membranes and RO pressure vessels. Wetted materials—including FRP, HDPE, PVDF, and stainless steel—are selected for salinity, pressure, and installation conditions.
Why does energy recovery matter in SWRO?
Seawater must be pressurised to push fresh water through the membrane, so the high-pressure pump is the largest energy user in an SWRO plant. Much of the feed leaves again as concentrate (brine) that is still at high pressure. An energy recovery device (ERD) returns that brine pressure to the feed stream and reduces the load on the high-pressure pump.
| ERD type | How it works | What to compare in design |
|---|---|---|
| Pressure exchanger | Brine pressure is transferred directly to part of the feed; a booster pump makes up the difference | Efficiency, booster requirement, noise, and brine mixing into the feed |
| Turbocharger | Brine drives a turbine that boosts the pressure of the feed to the membranes | Simplicity, footprint, flow range, and part-load efficiency |
The ERD type, number of trains and high-pressure pumps are set from capacity, operating profile and site energy cost. A good quotation states its assumed energy use per m³ of product water and the feedwater conditions used to calculate it.
PT Beta Pramesti Asia desalination references
The desalination and seawater projects below are listed in our project portfolio and reverse osmosis references:
| Project | Location | Year | Capacity | Client |
|---|---|---|---|---|
| Bimoli Tanjung Priok SWRO | Tanjung Priok, Jakarta | 2010 | 1,000 m³/day | PT Salim Ivomas Pratama |
| PLTU Anggrek 2×25 MW: desalination WTP, WWTP, electrochlorination, mixed bed | North Gorontalo | 2014 | Desalination 2×39 m³/h | PT Rekadaya Elektrika / PT PLN |
| PLTU Sulsel Barru II 100 MW: desalination plant and demin plant | Barru, South Sulawesi | 2019 | Desalination 2×25 m³/h, demin 2×12.5 m³/h | PT PLN Nusantara Power |
| Desalination plant | Batuputih, Bombana, Southeast Sulawesi | 2022 | 20 m³/h | PT Dua Samudera Perkasa |
| SWRO rental | Apical refinery | – | – | – |
For operation and maintenance of running plants, see our WTP, RO and SWRO operation and maintenance service.
Industrial desalination plant applications in Indonesia
SWRO is relevant where fresh water is constrained, seawater is accessible, and the project has viable intake and concentrate-management routes.
- Coastal power and energy facilities — produce feedwater for further treatment into boiler make-up or utility water.
- Offshore oil and gas operations — provide fresh water for utilities and crew needs with the specified post-treatment.
- Industrial estates and remote islands — establish an independent water source where the public supply is insufficient.
- Coastal hotels and resorts — supply utility or potable water after suitable post-treatment and testing.
- Vessels, ports, and fisheries facilities — produce fresh water close to demand at a project-specific capacity.
Data needed for a comparable desalination plant proposal
A useful proposal needs a shared design basis. Provide the following information so equipment capacity, chemical demand, installation space, and scope boundaries do not remain hidden assumptions.
- Seawater analysis, intake location and method, temperature, and tidal or seasonal variation.
- Hourly and daily product-water demand, operating hours, TDS or conductivity target, and final use.
- Electrical supply, available footprint, noise limits, crane access, and corrosive site conditions.
- Routes for concentrate, backwash water, and cleaning waste, including project environmental requirements.
- Automation level, standby philosophy, SCADA integration, civil scope, and commissioning target.
What should a comparable SWRO quotation prove?
| Quotation item | Buyer evidence to request |
|---|---|
| Process duty | Net product capacity at the stated feed salinity and temperature, recovery basis, operating hours, and product-water target |
| Complete process boundary | Included intake, pretreatment, high-pressure SWRO, post-treatment, CIP, and concentrate-management equipment |
| Materials and energy basis | High-pressure pump and energy-recovery selection, wetted materials, connected load, and energy calculation assumptions |
| Controls and monitoring | Instruments, alarms, interlocks, performance trends, remote or SCADA interface, and data retention |
| Acceptance test | Feed conditions, test duration, product flow and quality criteria, recovery, power measurement, and allowable exclusions |
| Commercial boundary | Civil works, utilities, installation, commissioning, chemicals, initial spares, training, documentation, and warranty scope |
PT Beta Pramesti Asia can cover process study, engineering, local fabrication at its Cikupa workshop, delivery, installation, commissioning, and operating support within an agreed scope. Discuss an SWRO design basis with Beta’s technical team.
Supporting products for an SWRO plant
- Betaqua Ultrafiltration for SWRO pretreatment — a membrane-barrier option for solids and colloids before the high-pressure unit.
- Brackish Water Reverse Osmosis — downstream treatment when the product-water target needs another RO stage.
- Reverse osmosis chemicals — antiscalant, dechlorination, and cleaning programs selected for membrane conditions.
- PAC and ACH coagulants — coagulant options evaluated through testing and pretreatment design.
- Electrochlorination — on-site hypochlorite from seawater for biofouling control at the intake and pretreatment.
- Membrane cleaners and membrane antiscalants — chemical programmes that keep SWRO membranes performing.
- Betaqua industrial RO machines — standard RO units for brackish water and seawater at small to medium capacity.
- Membrane elements and pressure vessels: water.co.id from PT Watermart Perkasa, the official distributor of DuPont FilmTec in Indonesia.
Desalination plant questions
Who builds SWRO desalination plants in Indonesia?
PT Beta Pramesti Asia designs, fabricates, installs and supports SWRO desalination plants in Indonesia, with references including Bimoli Tanjung Priok SWRO, the PLTU Barru II desalination plant and the PLTU Anggrek desalination WTP. Membrane elements and pressure vessels are available from our sister company, PT Watermart Perkasa (water.co.id).
Does an SWRO plant produce drinking water directly?
Not necessarily. SWRO permeate must be checked against the applicable quality target and may require remineralization, pH adjustment, disinfection, hygienic storage, and testing before potable use.
What desalination plant capacity can Betaqua supply?
The preliminary range shown here is 1-500 m³/day. Final capacity depends on hourly demand, operating hours, seawater quality, standby requirements, and available space; multiple trains can be assessed for larger capacity or redundancy.
What drives the cost of a desalination plant?
Feedwater and intake conditions, production capacity, pretreatment, membrane pressure and configuration, corrosion-resistant materials, energy, post-treatment, buildings, and concentrate management are the main drivers. Compare quotations on the same design basis and scope boundary.
How should operators control SWRO membrane fouling?
Start with feedwater characterization and suitable pretreatment, then trend SDI, differential pressure, normalized permeate flow, and permeate quality. Trigger cleaning from performance trends and the membrane supplier’s guidance rather than from a fixed calendar alone.