Operation and Maintenance (O&M) for WTP, RO and SWRO Plants
Updated
PT Beta Pramesti Asia’s operation and maintenance (O&M) service for WTP, RO and SWRO plants keeps water treatment plants delivering the agreed flow and quality: operators and technicians on site, chemical programmes, membrane, media and resin replacement, cleaning in place (CIP), spare parts, troubleshooting and performance reporting. Contracts can be a service contract, a total service agreement, or a BOO, BOT or ROT scheme.
About 200 sites use machines and systems from Betaqua / PT Beta Pramesti Asia. Our operation and maintenance team comprises 4 process engineers, 1 IE engineer, 7 skilled technicians and 6 skilled operators, backed by a workshop for fabrication, assembly and project support.
What does the O&M service cover?
| O&M area | Work performed | Evidence reported |
|---|---|---|
| Operators and technicians | Daily shift operation, plant rounds, log sheets and alarm response | Daily logs, shift notes and incident list |
| Chemicals | Supply and dose control of antiscalants, coagulants, flocculants, biocides and membrane cleaning chemicals | Chemical consumption, dosing pump calibration and process results |
| Membranes | Pressure and permeate trend monitoring, CIP based on performance trends, and membrane replacement | Normalised data, CIP records and element replacement history |
| Media and resin | Replacement of filter media and ion exchange resin, checks on demin and softener units | Water analysis, cycle capacity and replacement records |
| Spare parts | Spare part supply and stock of components, pumps, valves and instruments | Asset list, spare part plan and replacement records |
| Troubleshooting | Problem analysis on RO, demin and UF systems with corrective action | Investigation reports and repair recommendations |
| Reporting | Monthly performance trends, deviations, corrective actions and management review | Monthly report and review minutes |
Which plants can be operated and maintained?
- Reverse osmosis (RO) for brackish and process water, including pretreatment, cartridge filters and dosing. See Betaqua industrial RO machines.
- SWRO / seawater desalination, including intake, pretreatment, high-pressure pumps and energy recovery. See SWRO desalination systems.
- Water treatment plants (WTP) for surface water and groundwater: clarifiers, media filters and disinfection.
- Demineralisers, mixed beds and ultrafiltration for boiler feed and process water. See demineralizer and Betaqua ultrafiltration.
- Industrial WWTPs: biological and chemical treatment and sludge handling. WWTP O&M scope is described in the WWTP O&M reference; for start-up and recovery of biological processes, see WWTP bacteria and bioaugmentation.
Which O&M contract models are available?
| Model | Meaning | Fits when |
|---|---|---|
| Service contract | Operation and maintenance services for a customer-owned plant | The customer owns the plant and wants a specialist team to run it |
| TSA (Total Service Agreement) | A comprehensive agreement for plant operation and maintenance, with scope agreed per project | The customer wants one party accountable for plant performance |
| BOO | Build, Own, Operate: Beta builds, owns and operates the plant | The customer buys treated water rather than the plant |
| BOT | Build, Operate, Transfer: Beta builds and operates the plant, then hands it over | The customer wants to own the plant after an operating period |
| ROT | Revitalisation, Operate, Transfer: an existing plant is revitalised, operated, then handed back | An existing plant has degraded and needs repair before operation |
| Rental | Rental of water treatment systems or equipment | Temporary or emergency demand, or while a permanent plant is built |
| Replacement and reverse engineering | Replacement of components or systems, and rebuilding or optimising a system from its existing condition | Ageing equipment, hard-to-find original parts, or capacity changes |
Plants we have built
The projects below are listed in our project portfolio and show the plant types our team handles:
| Project | Location | System | Client |
|---|---|---|---|
| Bimoli Tanjung Priok SWRO | Tanjung Priok, Jakarta | SWRO 1,000 m³/day (2010) | PT Salim Ivomas Pratama |
| PLTU Anggrek 2×25 MW | North Gorontalo | Desalination WTP, WWTP, electrochlorination, mixed bed (2014) | PT Rekadaya Elektrika / PT PLN |
| PLTU Sulsel Barru II 100 MW | Barru, South Sulawesi | Desalination plant and demin plant (2019) | PT PLN Nusantara Power |
| SPAM Kali Angke | South Tangerang | Water supply system 220 L/s (2020) | PT PP (Persero) Tbk. |
| Desalination plant | Bombana, Southeast Sulawesi | Desalination 20 m³/h (2022) | PT Dua Samudera Perkasa |
Our latest project is the Kendal Industrial Park (KIK) Phase 1B wastewater treatment plant, Stage 1, with a capacity of 16,200 m³/day for PT Kawasan Industri Kendal. Our scope covers design, civil works, mechanical-electrical-process works and maintenance chemicals; construction runs 2025-2026 with start-up in 2026.
How does an O&M service start?
- Site visit and baseline review. Our team reviews the process diagram, design capacity and actual flow, water quality data, equipment condition, operator logs and chemical consumption.
- Scope and targets. Flow, water quality, operating time and responsibility limits are agreed, including what remains the plant owner’s responsibility.
- Staffing and maintenance plan. Number of operators and technicians, preventive maintenance schedule, CIP schedule, spare part plan and chemical programme are set.
- Operational handover. SOPs, log sheets, alarms and escalation routes are prepared before the team takes over.
- Reporting and continuous improvement. Performance is reported regularly and deviations are followed up with root-cause analysis and corrective action.
What should you send for an O&M quotation?
- Plant type, design capacity, actual flow and operating hours.
- Process diagram or P&ID, equipment list, and age of membranes, media or resin.
- Raw and product water quality data and the quality targets to meet.
- Chemical and power consumption and component replacement history.
- Current problems and the preferred contract model.
Send the data through PT Beta Pramesti Asia contacts. For independent water analysis as a baseline, samples can be tested through lab.id. Replacement parts such as DuPont FilmTec membrane elements and pressure vessels are also available from our sister company PT Watermart Perkasa, the official distributor of DuPont FilmTec in Indonesia, at water.co.id.
WTP and RO O&M FAQ
Can Beta operate a plant that Beta did not build?
Yes. The service starts with a baseline review of the plant and its documents. If equipment must be repaired or replaced before operation, that is proposed separately, for example through ROT, replacement or reverse engineering.
What is the difference between a service contract and BOO?
In a service contract the customer owns the plant and pays for its operation and maintenance. In BOO, Beta builds, owns and operates the plant, and the customer buys the treated water.
Does the O&M service include chemicals and membranes?
It can, depending on the agreed scope. Chemicals, membrane, media and resin replacement and spare parts can be included in the O&M contract or supplied separately as the plant needs.
How often do RO membranes need cleaning or replacement?
There is no fixed schedule for every plant. CIP is done based on normalised flow, differential pressure and permeate quality trends; membrane replacement is decided from monitoring results and element condition, not age alone.
Is O&M also available for wastewater treatment plants?
Yes. WWTP O&M covers operator routines, biological and chemical process control, equipment reliability and effluent reporting. Details are in the WWTP O&M reference.