Capacity and System Design

Actual production depends on feedwater TDS, temperature, operating pressure, membrane condition and system recovery.

Suitable Raw Water

The 3m³/h RO system can be designed for:

• • Municipal tap water

• • Borehole and well water

• • Low- to moderate-TDS groundwater

• • Pretreated river, lake or reservoir water

• • Process water requiring further desalination

• • Water used for small food and beverage production

• • Commercial or community water-supply projects

A complete water analysis is required before final system design.

If the water contains high hardness, iron, manganese, silica, turbidity or organic matter, additional pretreatment may be necessary. View our borehole water treatment solutions for groundwater projects.

Feedwater with higher salinity requires a dedicated brackish water desalination system rather than a standard low-pressure RO configuration.

Product-Water Quality

Under suitable design and operating conditions, the system can typically achieve:

• • Salt rejection of approximately 97%–99%

• • Significant reduction of TDS and conductivity

• • Significant reduction of calcium and magnesium hardness

• • Reduction of many dissolved metals and ionic contaminants

• • Clear, low-turbidity product water

• • More stable water quality for industrial processes

Final product-water TDS depends on the feedwater TDS, membrane selection, temperature, pressure and system design. It should therefore be calculated from the actual water analysis rather than guaranteed from capacity alone.

RO membranes can also reduce microorganisms, but an RO system should not be treated as the only microbiological barrier. Drinking-water applications normally require suitable disinfection and laboratory testing.

Boiler feedwater, food production and other regulated applications must be designed according to the specific water-quality standard required by the project.

Typical Treatment Process

Standard Process

Suitable for municipal water or groundwater with relatively stable quality:

Raw Water → Raw-Water Tank → Feed Pump → Multimedia Filter → Activated-Carbon Filter → Softener or Antiscalant Dosing → 5 μm Cartridge Filter → High-Pressure Pump → RO Membrane System → Product-Water Tank

The final pretreatment process is selected according to the raw-water analysis. Correct pretreatment helps control RO membrane fouling, scaling and premature performance loss.

Main Equipment Configuration

A typical 3m³/h RO system includes:

• • Raw-water feed pump

• • Multimedia filtration system

• • Activated-carbon filtration system

• • Water softener or antiscalant dosing unit

• • 5 μm cartridge security filter

• • RO high-pressure pump

• • Industrial RO membrane elements

• • RO membrane pressure vessels

• • Automatic flushing system

• • Flow and pressure instruments

• • Online conductivity or TDS monitoring

• • Electrical control panel

• • Skid-mounted frame and connecting pipelines

The exact configuration and component brands are confirmed according to the customer’s water quality, application and budget.

Optional Configurations

Power supply, membrane brands, pump brands, electrical components and construction materials can be customized.

Technical Parameters

All parameters are subject to final engineering design and membrane calculations.

Applications

The 3m³/h industrial RO system is suitable for:

• Small food and beverage factories

• Bottled-water and drinking-water plants

• Hotels, restaurants and commercial buildings

• Boiler makeup-water preparation

• Cosmetics and personal-care production

• Equipment and container washing

• Small manufacturing facilities

• Construction camps and remote project sites

• Community water-supply projects

• Laboratory and medical-water pretreatment

Applications requiring pharmaceutical purified water, laboratory-grade water or electronics-grade ultrapure water may require double-pass RO, EDI and additional post-treatment.

Frequently Asked Questions

What feedwater TDS can this system treat?

A standard configuration is normally used for low- to moderate-TDS water. A typical design reference may be up to approximately 2,000 mg/L, but the actual limit depends on hardness, alkalinity, silica, sulfate, temperature and required recovery.

Higher TDS requires a dedicated BWRO membrane and pump design.

Does 3m³/h refer to feedwater or product water?

It refers to the rated RO product-water output. Feedwater demand is higher and depends on the system recovery rate.

For example:

• At 60% recovery, approximately 5m³/h of feedwater is required.

• At 70% recovery, approximately 4.3m³/h of feedwater is required.

Can the system operate 24 hours per day?

Yes, when it is correctly designed with adequate raw-water and product-water storage. Scheduled inspection, filter replacement, membrane cleaning and maintenance are still required.

Can it treat borehole water containing iron and manganese?

Yes, but excessive iron and manganese must be removed before the RO membranes. Oxidation and dedicated filtration are normally used to prevent membrane fouling.

Can the product water be used for drinking?

The system can be configured for drinking-water production. Suitable disinfection, optional remineralization and final laboratory testing are required according to local regulations.

Adding UV or ozone alone does not automatically confirm drinking-water compliance.

Can the system be installed inside a container?

Yes. The RO equipment, pretreatment system, tanks and control panel can be integrated into a container for outdoor or remote-site installation.

How long do RO membranes last?

RO membranes commonly operate for approximately 2–5 years. Actual service life depends on feedwater quality, pretreatment, operating pressure, cleaning frequency and maintenance.