Published 2026-07-04T12:59:24+08:00
RO membrane quantity should be sized from the project basis, not from a generic rule of thumb.
The correct number depends on flow rate, recovery target, feedwater quality, target permeate quality, and the selected system arrangement. Project data is required for proper sizing.
Clear Answer First
RO membrane quantity should be sized from the real design basis, not from a generic rule of thumb. Flow rate, recovery target, water quality, and a practical fouling margin all affect the final count.
Why It Matters
Membrane and concentration routes are sensitive to feedwater swings, so the upstream stability matters as much as the final product quality.
A process that looks acceptable on paper can become hard to run if pretreatment, recovery, or concentrate handling were not set from the real data.
Typical Design Inputs
- feedwater report and seasonal variation
- target permeate quality or recovery target
- scaling risk, temperature, and operating pressure
- pretreatment route and cleaning strategy
- concentrate handling or residue handling plan
Common Mistakes
- Using average water data instead of the worst operating period
- Picking the membrane route before pretreatment is confirmed
- Ignoring concentrate handling or cleaning frequency
FAQ
Q: Can this be designed without water data?
It is not recommended. The design should follow actual project data.
Q: What should be checked first?
Start with the process basis, water quality, and the target result.
Q: What information is needed before quotation?
Flow rate, water quality report, target standard, and site conditions are recommended.
CTA
Send your water data and flow requirement. YAOTONG engineers will help size the RO membrane quantity.