Interactive Comparator · 2026
STP Technology Comparison Matrix
Weigh Extended Aeration, MBBR, SBR, MBR and UASB against each other across footprint, effluent quality, capex, opex, simplicity and reuse-readiness. Choose what matters most and see the best-fit plant.
Weighted total score per technology — winner in green
Set your priority
The chosen criterion's column is highlighted and weighted higher in the total.
How much more the priority counts than the other five criteria (each fixed at ×1).
The full comparison matrix
Every technology scored 1–5 on each criterion (5 = best). The Effluent quality column is highlighted and weighted ×3.
| Technology | Land | Effluent | Capex | Opex | Simple | Reuse | Score |
|---|---|---|---|---|---|---|---|
| Extended AerationRobust, land-hungry, forgiving to run | 2 | 3 | 4 | 3 | 4 | 3 | 25 |
| MBBRCompact media, easy retrofit, low fuss | 3 | 3 | 4 | 4 | 4 | 3 | 27 |
| SBRBatch cycles, good effluent, automation-led | 3 | 4 | 3 | 3 | 3 | 4 | 28 |
| MBRSmallest footprint, best effluent, priciest | 5 | 5 | 2 | 2 | 2 | 5 | 31 |
| UASBAnaerobic, very low power, weak effluent | 4 | 2 | 4 | 5 | 3 | 2 | 24 |
How this works
- Each technology is rated 1–5 on all six criteria, where 5 is best. For capex and opex a lower real cost earns a higher score, so bigger is always better.
- Weighted total = sum of every rating, but your priority (Effluent quality) is multiplied by ×3 instead of ×1.
- The technology with the highest total wins — right now MBR at 31 pts, ahead of SBR (28 pts).
A directional guide for shortlisting, not a substitute for site-specific design. Confirm land, load, discharge norms and lifecycle cost with a qualified consultant before selecting a technology.
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