RO Plant Capacity – 250 LPH to 20,000 LPH
FEATURES OF REVERSE OSMOSIS
1. Removal of dissolved salts
Reverse osmosis can stably and effectively remove dissolved salts, dissolved organic substances (trihalomethane, its precursors, agricultural chemicals, etc.), and micro fine particles (living germs, dead germs, and many other micro fine particles) from water. Thus it is ideal for a wide area of applications ranging from production of ultra pure water to desalination of seawater.
2. Energy-saving separation technique
Reverse osmosis keeps water from evaporating, making it energy-saving separation technique th/?at requires less energy consumption.
3.Utilizable as a concentration and recovery method
Reverse osmosis does not need heating, it can concentrate and recover valuable process materials dissolved in a solution without any degradation which might otherwise occur in such materials.
4. Compact equipment
Modules can be arranged in a three dimensional configuration to provide excellent space efficiency, so the space needed for installation can be minimized.
5. Simple operation and control
Reverse osmosis is a simple process, its operation and control are uncomplicated, while maintenance is easy and free from trouble.
Reverse Osmosis Membrane
In a practical implementations of RO filtering, pressure is applied with an RO Process Pump. As permeate water is produced, the concentration of impurities on the feed water side builds up and can cause the membrane to scale up and quit working. To prevent this, a continuous flow of water running across the membrane helps remove rejected ions. This is called crossflow.
Reverse Osmosis Spiral Wound Membranes
To maximize surface area and minimize space, filter membranes are/? usually wound in a spiral element. Water flows through the channels between the spiral windings of the element. Permeate is collected in a tube in the center of the element.
Several spiral elements are connected together within a pressure vessel, and several vessels are connected together within the filter system. The vessels allow permeate to collect in a tube in the center of each spiralwound element before flowing out to a holding tank or drain depending on the application. The reject then passes through another vessel and then another, until as much pure water as possible is removed. The reject is then disposed of.
Structure of TM-Series and SU-Series Module
Reverse Osmosis Plants/RO Plants
Reverse osmosis is the process of forcing a solvent from a region of high solute concentration through a membrane to a region of low solute concentration by applying a pressure in excess of the osmotic pressure. This is the reverse of the normal osmosis process, which is the natural movement of solvent from an area of low solute concentration, through a membrane, to an area of high solute concentration when no external pressure is applied. The membrane here is semipermeable, meaning it allows the passage of solvent but not of solute.
To illustrate, imagine a semi permeable membrane with fresh water on one side and a concentrated aqueous solution on the other side. If normal osmosis takes place, the fresh water will cross the membrane to dilute the concentrated solution. In reverse osmosis, pressure is exerted on the side with the concentrated solution to force the water molecules across the membrane to the fresh water side.
The membranes used for reverse osmosis systems have a dense polymer barrier layer in which separation takes place. Since Reverse Osmosis does not occur naturally, it must be created by applying pressure to the high solids water in order to force it through the membrane, with pressures from 8 – 14 bar for fresh and brackish water, and 40 – 70 bar for seawater, which has around 24 bar (350 psi) natural osmotic pressure which must be overcome.
Design Considerations for RO Plant
Fluid Systems RO Plants work on the Crossflow Filtration method, which takes the feed water and uses a percentage of it as a wash or reject stream, removing the solids during the filtration process.
The product flow of an RO Plant is mainly a function of temperature and pressure. System recovery (product divided by feed) is limited by the characteristics of the feed water and can be controlled through the use of recycle stream. Product quality is based on a percentage of dissolved solids fed to the membrane. There should be an economic balance between product quality and system recovery. High recoveries increase concentration of dissolved solids in the system which degrades quality, but high recoveries make the system work more efficiently and decrease waste.
Reverse Osmosis Plants do not deliver to service all of the water that is fed to them. During operation, some of the incoming water is used to wash down the membrane, and only part becomes finished product water. Purified water is referred to as product and wastewater is referred to as concentrate, or reject. The percent of water delivered as product is called the recovery, and depends upon the membrane and on total RO Plant design considerations.
Pretreatment – Reverse Osmosis Plants
The feed water, depending on its source, may contain various concentrations of suspended solids and dissolved matter. Suspended solids may consist of inorganic particles, colloidal particles and biological impurities such as microorganisms and algae. Dissolved matter may consist of highly soluble salts, such as chlorides, and sparingly soluble salts, such as carbonates, sulfates, and silica.
During the Reverse Osmosis process, the volume of feed water decreases, and the concentration of suspended particles and dissolved ions increases. Suspended particles may settle on the membrane surface, thus blocking feed channels and increasing pressure drop across the system. Sparingly soluble salts may precipitate from the concentrate stream, create scale on the membrane surface, and result in lower water permeability through the RO membranes. This process of formation of a deposited layer on a membrane surface is called membrane fouling and results in performance decline of the RO system. The objective of the feed water pretreatment process is to improve the quality of the feed water to the level which would result in reliable operation of the RO membranes. Based on the raw water quality, the pretreatment process for RO Plants may consist of all or some of the following treatment steps:
- Clarification followed by Sand Filtration for Turbidity removal
- Water disinfection with chlorine
- Hardness reduction by Softening
- Addition of scale inhibitor
- Reduction of free chlorine using sodium bisulfite/ Activated carbon filters
- Final removal of suspended particles using cartridge filters
We Offer a wide range of Reverse Osmosis Plants [RO Plants]
Industrial Reverse Osmosis Plants/ Industrial RO Systems
We manufacture a wide Range of industrial Reverse Osmosis Plants to cater the stringent process requirements. Our industrial reverse osmosis Plants are carefully customized and configured to suit the individual requirement of the output water, which varies from normal drinking application to the specific usage, such as food Processing, pharmaceuticals and boiler feeding requirement.
These systems come standard with pre-filters, chemical dosing and Antiscalant dosing. Customization is available on all our units based on individual water application and customer needs.
- 4″ & 8″ TFC spiral wound membranes
- FRP membrane housings
- Epoxy painted steel frame
- SS High Pressure Piping
- Stainless steel High Pressure Multi-stage pumps
- 20 & 5 micron cartridge filter
- Low & High pressure switches
- Glycerin filled pressure gauges
- Permeate & concentrate flow meters
- PLC/Microprocessor based Controllers
- Outlet Conductivity meter
These Industrial RO Systems are available in the Flow Ranges from 1 M3/Hr Product Water Capacity and above. Standard Ranges are available in Multiples of 1 M3/Hr up to 10 M3/Hr.
Higher flow Rates from 10 M3/Hr to 100 M3/Hr and above are custom-built as per Customers requirement with extensive pre-filtration units to suit the most aggressive waters.
Commercial RO Systems / Institutional RO Systems
One of our most popular series, the Commercial RO usually comes in standard Models. These Commercial RO Systems can be customized to add Multimedia Filters & Activated carbon Filters, Water softeners, Antiscalant Dosing Systems, and UV sterilizers.
These systems are used to purify water and remove salts and other impurities. It is also capable of rejecting bacteria The Main features of these RO Plants are
- Powder coated frame
- 20 & 5 micron sediment pre-filter
- Stainless Steel Multistage High pressure pump
- FRP pressure vessel
- Product and Reject Flow Meters
- Low & High pressure switch
- High rejection TFC membranes
- Heavy duty high pressure tubing
These Commercial/Institutional RO Systems are available in following Flow Ranges:
- 50 LPH RO Plants
- 100 LPH RO Plants
- 200 LPH RO Plants
- 500 LPH RO Plants
- 750 LPH RO Plants
Containerized RO Plants
Containerized Reverse Osmosis Plants / Containerized Desalination Plants/Containerized Ultra filtration Plants Fluid Systems supplies a host of water treatment in a containerized version. From ultra filtration to brackish water plants to Desalination Plants. Fluid Systems provides an affordable, plug-and-play desalination solution that can be commissioned in a short period. Our ready-to-use containerized desalination plants can produce up to 1000 m3/day of drinking water.
The Plant is housed in a standard 20 or 40 ft container. The containers can be insulated on request. The Plant comes with pre-piped and pre cabled connections [plug and play]. Remote Monitoring Option also available with GSM connectivity Benefits of Fluid Systems Containerized Plants
- Plug and Play Unit
- Minimum civil construction required
- Small footprint
- High quality components
- High recovery
- High TDS Rejection
- Easy Spare parts availability as standard Components are used
- Modular in design
- Low energy and chemical consumption
- Quick Installation
- Off shore Applications
- Armed Services Camps
- Construction Sites
- Mining Operations