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Commercial RO plants
Commercial RO Plants for Packaged Water and Institutions
Commercial RO plants supply drinking and utility water for packaged water units, hospitality, institutions and hospitals. They typically run on feed below 2,000 ppm TDS at 10 to 14 bar with 65 to 75 percent recovery, and are sized on peak draw with storage rather than on daily average consumption.
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Answer first
What Commercial RO Plants Are, and How They Are Specified
Commercial RO plants supply drinking and utility water for packaged water units, hospitality, institutions and hospitals. They typically run on feed below 2,000 ppm TDS at 10 to 14 bar with 65 to 75 percent recovery, and are sized on peak draw with storage rather than on daily average consumption.
The defining characteristic of commercial duty is that demand is peaky. A hostel, a hotel or a canteen draws most of its water in a few short windows, so a plant sized on daily average will be adequate on paper and short in practice.
Where the output is packaged drinking water, the specification also has to hold a mineral profile rather than simply removing everything. Fully desalinated permeate tastes flat and is aggressive to pipework, which is why a controlled blending line is part of the design.
Specification
Commercial RO plant design parameters
| Parameter | Typical value or range | Notes |
|---|---|---|
| Feed TDS | Typically below 2,000 ppm | Municipal supply or treated borewell |
| Applied pressure | 10–14 bar | Low-energy elements where duty is continuous |
| Design recovery | 65–75 % | Confirmed against feed hardness and silica |
| Output standard | IS 10500 acceptable limits | TDS 500 mg/L acceptable, hardness 200 mg/L as CaCO₃ |
| Blending | Controlled bypass line | Restores mineral profile and reduces corrosivity |
| Disinfection | UV or ozone | Specified with the storage arrangement |
| Sizing basis | Peak hourly draw plus storage | Daily average sizing runs short at peak |
| Element size | Typically 4040 | 8040 above roughly 5 m³/h |
Feed TDS
- Typical value or range
- Typically below 2,000 ppm
- Notes
- Municipal supply or treated borewell
Applied pressure
- Typical value or range
- 10–14 bar
- Notes
- Low-energy elements where duty is continuous
Design recovery
- Typical value or range
- 65–75 %
- Notes
- Confirmed against feed hardness and silica
Output standard
- Typical value or range
- IS 10500 acceptable limits
- Notes
- TDS 500 mg/L acceptable, hardness 200 mg/L as CaCO₃
Blending
- Typical value or range
- Controlled bypass line
- Notes
- Restores mineral profile and reduces corrosivity
Disinfection
- Typical value or range
- UV or ozone
- Notes
- Specified with the storage arrangement
Sizing basis
- Typical value or range
- Peak hourly draw plus storage
- Notes
- Daily average sizing runs short at peak
Element size
- Typical value or range
- Typically 4040
- Notes
- 8040 above roughly 5 m³/h
Typical design bands. Final configuration follows your feed water analysis and the applicable output specification.
Selection guidance
Blend deliberately rather than under-treating
The common shortcut on packaged water is to run the RO at lower rejection so the product keeps some minerals. That works until the feed changes, because the mineral content of the product then moves with the feed rather than being controlled.
The better arrangement is to treat fully and blend back a measured proportion of filtered feed through a controlled line. Product quality is then set by the blend ratio, which you can adjust, rather than by the feed, which you cannot.
Application mapping
Where Commercial RO Plants Are Used
Packaged drinking water
- Typical requirement
- IS 10500 acceptable limits with consistent taste
- Indicated configuration
- Multi-grade and carbon, RO with blending, UV or ozone, storage
Hotels and hospitality
- Typical requirement
- Peaky draw across service periods
- Indicated configuration
- Plant sized on peak with storage, softening where hardness is high
Hospitals and institutions
- Typical requirement
- Reliable supply through the working day
- Indicated configuration
- RO with storage and duty-standby arrangement where continuity matters
Educational campuses
- Typical requirement
- Dependable output at controlled running cost
- Indicated configuration
- Compact RO sized for peak class use, consumables planned annually
Commercial terms
How This Category Is Quoted
Water treatment does not have a list price, and any supplier quoting one before seeing a feed analysis is quoting a different plant from the one you need.
Pricing basis
On request, and capacity-dependent. Plant pricing moves with capacity, feed water analysis and the recovery target; membranes, cartridges and resins are quoted per element, per lot or per litre of media.
Order quantity
From a single replacement element or a case of cartridges through to full plant scope. Consumable lines are quoted per box or per lot, and the lot size is stated on the quotation.
Lead time
Confirmed per line item at quotation stage. Stocked consumable lines and made-to-order plant differ substantially, so a single blanket lead time for the category would be misleading — the quotation carries the figure for each line.
Invoicing
GST invoice against company or institutional purchase order. Proforma issued where advance payment or internal approval requires it.
Delivery coverage
Despatch from Delhi NCR across India, including plant, project and institutional sites. Delivery city and site access are asked for at enquiry because both affect despatch mode.
Documentation
Technical datasheet for the item quoted, and a test certificate where the principal supplies one with that product. Tender and institutional documentation formats are prepared on request — send the format with the enquiry so the quotation is issued in a form you can submit without rework.
Request for quotation
Request a Quote — Commercial RO Plants
Fields marked with an asterisk are required. The technical fields are what usually decide whether you get a quotation on the first pass or three emails of clarification.
Frequently asked
Commercial RO Plants — Common Questions
How is a commercial RO plant sized?
On peak hourly draw combined with storage, not on daily average consumption. Commercial demand arrives in short windows, so average-based sizing runs short exactly when demand is highest.
A smaller plant filling a tank across the day is frequently cheaper both to buy and to run than a larger plant sized to meet the peak instantaneously.
What TDS should packaged drinking water have?
IS 10500:2012 sets TDS at 500 mg/L acceptable and 2,000 mg/L permissible in the absence of an alternate source. Design to the acceptable limit — the permissible figure is a tolerance, not a target.
Total hardness under the same standard is 200 mg/L acceptable and 600 mg/L permissible, as CaCO₃.
Why does RO water taste flat, and can that be corrected?
Because reverse osmosis removes the dissolved minerals that give water its taste along with everything else. Fully desalinated permeate also tends to be aggressive to distribution pipework.
The usual correction is a controlled blending line returning a measured proportion of filtered feed, or a remineralisation stage. Both give a product whose mineral content you set rather than inherit from the feed.
Related Products and Categories
Specified alongside commercial ro plants, and the category this page sits in.
Industrial RO plants for process dutyActivated carbon cartridges for chlorine removalWater testing solutionsBack to Industrial RO Systems
- Delhi NCR base with pan-India supply, including plant and project sites.