Industrial RO Water Treatment System and Reverse Osmosis Unit

The RO water treatment system, or reverse osmosis, is one of the most effective water treatment methods for reducing dissolved solids, salinity, hardness, TDS, nitrate, heavy metals, and many of the contaminants present in water. By passing water through semi-permeable membranes, this system produces treated water with suitable quality for industrial, agricultural, food, pharmaceutical, and utility uses.

Poly Payesh, by reviewing the raw-water quality, the consumption rate, the type of use, and the required standard, designs and executes the RO water treatment system to suit the conditions of each project. The correct selection of the unit’s capacity, the type of membrane, suitable pretreatment, and the control equipment plays an important role in the quality of the output water, reducing maintenance costs, and increasing the system’s lifespan.

What Is an RO Water Treatment Unit?

The RO water treatment unit, also known as an industrial water desalinator, an industrial reverse osmosis unit, and an industrial RO water treatment system, passes water through special membranes using high pressure.

In this process, the majority of the salts, dissolved solids, very fine particles, and contaminants present in the water are separated, and the treated water exits the unit. The output water can be used in production lines, boilers and steam generators, cooling towers, the food industry, greenhouses, factories, and many industrial projects.

How Does the RO System Work?

The water treatment process in an RO unit usually includes several main stages:

1. Water Pretreatment

In the first stage, suspended particles, mud, sand, rust, free chlorine, and part of the water’s hardness are reduced. This stage is very important because it prevents damage to the membranes.

2. Chemical Dosing

According to the water analysis, anti-scaling agents or antiscalants may be used to reduce the likelihood of scale forming on the membranes.

3. High-Pressure Pump

The high-pressure pump feeds the water into the membrane housings at a suitable pressure. The required pressure depends on the raw-water quality, the salinity level, and the unit’s capacity.

4. Passing Through the RO Membrane

The membranes are the main part of a reverse osmosis unit. In this stage, the water passes through the membrane, and the dissolved solids and contaminants are largely separated.

5. Production of Treated Water

The unit’s output water, known as permeate, has a higher quality than the input water and is stored for the intended use or fed into the production line.

6. Disposal or Management of the Reject

Part of the input water, which has a higher concentration of solids, exits the system as reject (concentrate). A suitable design of this section is highly important in reducing water consumption and managing the reject.

Applications of the RO Water Treatment System

The industrial RO water treatment unit is used in various industries and complexes, including:

Food and beverage manufacturing plants
Pharmaceutical and sanitary industries
Manufacturing and industrial plants
Steam generators and boilers
Cooling towers
Greenhouses and agricultural units
Livestock and poultry farms
Well-water treatment
Saline and brackish water treatment
Providing suitable water for production lines
Industrial complexes and industrial towns
Water and beverage bottling units
Treatment of the input water to sensitive industrial systems

Advantages of Using an Industrial Reverse Osmosis Unit

Using an RO water treatment system can offer important advantages for industrial and manufacturing units:

Reducing the salinity and TDS of the water
Reducing the water hardness and preventing scaling
Improving the quality of the water used in the production line
Increasing the lifespan of industrial and utility equipment
Reducing failures of boilers, pumps, pipes, and heat exchangers
Reducing chemical consumption in some industrial processes
Providing suitable water for sensitive uses
The ability to be designed in various capacities
Usability for well water, municipal water, brackish water, and some saline water sources
Better control of the output water quality

Main Components of the RO Water Treatment Unit

An industrial RO water treatment system, depending on the capacity and project conditions, can include the following equipment:

Raw-water storage tank
Sand filter
Carbon filter
Resin water softener
Cartridge filter
High-pressure pump
RO membrane
Membrane housing
Electrical panel and control system
Flow meter, pressure gauge, and TDS meter
Antiscalant dosing system
Treated-water storage tank
Membrane cleaning system (CIP)
Water quality monitoring and control equipment

The selection of this equipment must be done based on the water analysis and the type of use. Using unsuitable equipment or omitting essential pretreatment can cause a drop in efficiency, membrane fouling, and an increase in repair costs.

Designing the RO Water Treatment System Based on Water Analysis

To correctly select an industrial water treatment unit, knowing only the required capacity is not enough. The input-water quality must also be examined precisely. Factors such as TDS, hardness, chlorine, iron, manganese, silica, nitrate, turbidity, pH, and the amount of organic matter have a direct effect on the unit’s design.

For this reason, at Poly Payesh the RO water treatment system is designed based on the following:

Raw-water analysis
The amount of water needed per day
The required capacity in cubic meters per hour
The type of industry and the use of the output water
The expected quality of the treated water
The conditions of the unit’s installation site
The amount of available space
Access to electricity and auxiliary equipment
The maintenance and operating conditions of the system

Capacity of the Industrial RO Water Treatment Unit

Industrial RO units can be designed and built in various capacities. The suitable capacity of the unit depends on the real water consumption, the operating hours of the complex, the raw-water quality, and the project’s future needs.

For example, one complex may need a low-capacity unit to supply a limited amount of consumed water, while a factory or industrial town needs larger, multi-stage systems. A sound capacity design prevents purchasing more equipment than needed or a water shortage during operation.

The Difference Between an RO Unit and Ordinary Water Treatment

Simple water treatment systems are usually designed to remove suspended particles, sediment, and odor; but the industrial RO reverse osmosis unit has a greater ability to reduce dissolved solids and water salinity.

Simply put:

A sand filter is used more for removing suspended particles.
A carbon filter is used to reduce odor, color, and free chlorine.
A resin water softener is suitable for reducing water hardness.
An RO system is used to reduce TDS, salts, and dissolved solids.

In many projects, this equipment is used in combination alongside the RO unit to increase the output water quality and the lifespan of the membranes.

Why Poly Payesh for Executing an RO System?

Poly Payesh, with a focus on designing water and wastewater treatment solutions, strives to provide the RO water treatment system to suit the real need of each project, not merely based on a fixed, generic capacity.

The advantages of a sound RO system design include the following:

Reviewing the water quality before selecting equipment
Designing based on the type of use and the required capacity
Selecting equipment suited to the project conditions
Attention to reducing maintenance and operating costs
The possibility of implementing pretreatment systems alongside the RO
The ability to design for industrial, agricultural, and utility projects
Consultation for selecting the suitable capacity and the future expansion path

Consultation and Price Inquiry for the RO Water Treatment Unit

The price of an industrial RO water treatment unit depends on various factors, including the unit’s capacity, the input-water quality, the type of membrane, the pretreatment equipment, the piping material, the electrical panel, the control system, and the auxiliary equipment.

To receive consultation and select an RO water treatment system precisely, it is best to have the following information ready:

Raw-water analysis
The amount of water needed
The type of use of the output water
The unit’s installation site
The intended capacity
The electricity conditions and available space
The need for a tank, pretreatment, or a water storage system

To receive specialized consultation, a water-analysis review, and a price quote for the industrial reverse osmosis unit, get in touch with the experts at Poly Payesh.

Frequently Asked Questions About the RO Water Treatment System

Can an RO unit treat well water?

Yes. An RO unit can be used to treat well water, but a water analysis must be done first to determine the levels of salinity, hardness, iron, manganese, nitrate, and other parameters.

Does an RO system reduce water salinity?

Yes. One of the most important applications of a reverse osmosis system is reducing the salinity and TDS of the water. The extent of salinity reduction depends on the system design, the input-water quality, and the type of membrane.

What industries is the industrial RO water treatment unit suitable for?

This unit can be used for the food, pharmaceutical, manufacturing, and agricultural industries, greenhouses, boilers, cooling towers, and various industrial units.

Does an RO unit require maintenance?

Yes. Replacing the filters, controlling the pressure, monitoring the TDS, checking the chemicals, and periodically cleaning the membranes are essential to maintain the system’s efficiency.

What information is needed to select an RO unit’s capacity?

The water consumption rate, the raw-water quality, the type of use of the treated water, the operating hours of the complex, and the installation space are among the most important pieces of information needed.