If a factory requests a quote saying only “We need 20 tonnes of water per day,” the supplier still does not know when that water must be used. Discussions about industrial purified-water equipment configurations in Yunnan should distinguish daily total demand, continuous production time, instantaneous draw-off, and water storage. Gudian Technology begins requirements discussions with the actual process. The same daily demand cannot automatically be assigned the same equipment unit.
Map the water-use schedule first
For actual process steps such as cleaning, solution preparation, and process makeup water, record each period's duration, draw-off rate, and equipment operating at the same time. List drinking-water and process-water criteria separately. Specify which water uses can be staggered and which require continuous supply. Include power outages, maintenance, and production expansion as conditions to discuss, without setting standby capacity on the customer's behalf.
| Item | Unit or details | Purpose |
|---|---|---|
| Total daily effective water demand | m³/day | Check whether the day's demand can be replenished |
| Effective water-production time | hours/day | Exclude periods when water cannot be produced; align with the agreed unit operating schedule |
| Peak draw-off | m³/hour and duration | Check instantaneous supply capacity and the decline in stored water |
| Usable storage range | m³ | Distinguish the tank's nominal volume from the volume actually available for use |
Hypothetical example: Average flow is only a starting point
Suppose a process uses 20m³ of effective water daily and only 8 hours are available for production. Ignoring other losses, the average replenishment requirement is 20÷8 = 2.5m³/hour. This is only an arithmetic starting point, not an equipment-selection result. Feedwater temperature, target water quality, shutdowns, rinsing, storage, and supply still need to be checked.
If draw-off is 6m³/hour for 2 consecutive hours while actual effective production is 2.5m³/hour, consumption during that period is 12m³ and replenishment is 5m³, resulting in a net storage decrease of 7m³. All figures in this example are hypothetical. They show why usable water at the start of the peak and subsequent replenishment arrangements must be checked. They do not mean that a 7m³ tank or any particular model must be purchased. Water use during other periods must still be included in the daily balance.
Include site conditions in the confirmation
Equipment location, power supply, inlet and drainage connections, pump head, storage cleanliness, and maintenance access affect the implementation scope. Nominal tank size cannot replace checks of high and low water levels, unusable water volume, and downstream supply. List water production, storage, and delivery separately in the configuration and expense schedules to avoid having the main unit arrive without the necessary site provisions.
What to record during acceptance
Under the agreed operating conditions, record feedwater conditions, effective water production, product-water criteria, and point-of-use supply separately. Instrument units, measurement points, and calibration information must correspond. A single outlet-conductivity reading does not mean that all production or drinking-water requirements have been met. Retain commissioning and sampling records, and reassess when demand or the water source changes.
Frequently asked questions
Does a 5-tonne-per-hour RO unit always produce 120 tonnes per day?That cannot be guaranteed. Actual production also depends on available operating hours, operating conditions, shutdowns, and other factors.
Is more stored water always better?Check actual scheduling and usage conditions, and also consider maintenance, hygiene, and available space.
How should I request a quote if I already have equipment?Provide the existing model details, piping, demand, and operating records, and identify what will be retained and what will be added.
Supporting records you can fill in
Further reading
- Industrial RO selection inquiry checklist
- Scope for calculating operating costs
- Factory water requirements
- Knowledge & resources
- Submit the water requirements for this inquiry
Sources and scope of application
Gudian Technology compiled this material using public technical information and purchasing discussion needs, with AI-assisted drafting. Content checked on October 6, 2026. The sources below explain general principles. They are not test reports, authorizations, or evidence of project results for this site's equipment models. Confirm the specific equipment configuration, expenses, services, and acceptance criteria for the intended use through written documents.
The same daily water demand can have entirely different hourly peaks
RO production describes the amount produced per unit of time under the corresponding operating conditions. Instantaneous workshop demand also involves storage, supply pumps, and the piping network. Break the day's demand down by period before deciding the required main-unit size, usable storage, and point-of-use supply capacity.
| Item | Example A | Example B |
|---|---|---|
| Total daily demand | 12 m³ | 12 m³ |
| Water-use pattern | Uniform use over 12 hours | Use concentrated within 3 hours |
| Average demand during the usage period | 1 m³/h | 4 m³/h |
| Information still needed | Peaks over shorter periods, operating hours, and supply pressure | Peaks over shorter periods, replenishment time, and usable storage range |
Consider the cumulative deficit when discussing storage
The figures above are arithmetic examples, not equipment recommendations or design guarantees. If RO can still produce water during peak use, record hourly demand and actual production during the same periods and compare the cumulative deficit. Then check the usable storage range, low-level protection, standby arrangements, and shutdown effects. A tank's nominal volume is not the amount of stored water entirely available for use.
Before ordering, list water temperature, raw-water conditions, and operating hours alongside the equipment requirements. A unit with a stated nominal flow may produce different results at different sites. Dividing daily total demand by 24 hours does not constitute a complete equipment selection.
Related resources and next steps
Sources and scope
Drafted with AI assistance on 8 October 2026 and checked item by item against the knowledge base and the public sources below. Manufacturer information explains the relevant technology; it does not imply that Gudian is an authorized distributor or manufacturer for that brand. Equipment specifications are subject to the selected model and confirmed documents.