To review an MBR membrane replacement, start with the existing brand, exact model, drawings, dimensions, membrane area and connection details. Then verify the tank, design flow, MLSS, wastewater, aeration, operating cycle and cleaning limits; a similar-looking module is not proof of compatibility.
The minimum evidence for a replacement review
| Information | Why it matters |
|---|---|
| Existing brand and exact model | Identifies the original configuration and the documentation that must be compared. |
| Nameplate and product photos | Help confirm revision, frame, header, element arrangement and visible interfaces. |
| Dimensioned drawing | Shows overall size, lifting points, tolerances, nozzles and connection locations. |
| Membrane area | Supports area and hydraulic comparison, but cannot be used alone. |
| Connection size and standard | Prevents unsupported assumptions about permeate, air and cleaning interfaces. |
| Installed quantity and arrangement | Defines cassette, train and duty/standby implications. |
Tank and process data that change the decision
Provide the membrane-tank length, width, operating depth, lifting clearance, module spacing and available aeration arrangement. For a new module size, check whether the cassette, headers and maintenance access remain workable.
Also provide average, peak and instantaneous design flow; wastewater type; temperature; MLSS; current flux and TMP; permeate/relaxation/backwash sequence; air-scour rate; cleaning chemistry and cleaning frequency.
Element-only, cassette or complete-module replacement
An element-only proposal may be practical when the existing frame, seals, headers and aeration system remain serviceable and the new element interfaces are approved. A cassette or complete-module replacement may be needed when structural dimensions, headers, connections or air distribution cannot be retained.
The supply boundary should state whether it includes elements, frames, permeate headers, air headers, hoses, seals, lifting parts, drawings and commissioning support.
How preliminary compatibility should be decided
- Confirm the original product and revision.
- Compare dimensions and mechanical interfaces.
- Compare effective membrane area and hydraulic mode.
- Check the tank, aeration and cleaning sequence.
- Review wastewater, MLSS, temperature, flux and TMP history.
- Obtain the proposed product datasheet and approved drawing.
- Use written technical confirmation before purchase.
When direct replacement should not be claimed
Do not claim direct replacement when the original model cannot be identified, drawings conflict with measured dimensions, connections or aeration cannot be matched, the process operates outside approved limits, or the reason for premature failure has not been investigated.
Changing membrane area without reviewing biological and hydraulic loading can also move the system away from its intended operating point.
Send your replacement requirement
Send your existing MBR model, drawing or photos
Send your existing MBR model, drawing or photos for preliminary compatibility review. Include the installed quantity, tank size, design flow, MLSS, wastewater type, current operating data and delivery country.
Send Your MBR Replacement DataInformation to send YiFu
- Existing brand, exact model and product revision
- Nameplate photos plus element and cassette photos
- Dimensioned drawings and connection details
- Membrane area, installed quantity and arrangement
- Tank dimensions, water depth and lifting clearance
- Average, peak and instantaneous design flow
- MLSS, temperature, wastewater type, flux and TMP
- Aeration, operating cycle, cleaning history and current problem