Interactive Selector · 2026
STP Technology Selector
Extended Aeration, MBBR, SBR or MBR? Tell us how much you value footprint, effluent quality, cost, power and simplicity, and we score all four processes to recommend the best fit for your project.
Fit score per technology — taller is better
What matters to you?
Rate each priority from 1 (don't care) to 5 (critical). The more weight you give a criterion, the more it pulls the recommendation towards technologies that excel at it.
Land / civil space is tight
Water for flushing, landscape, reuse
Lower capex & running cost
Energy-efficient operation
Easy to run with basic staff
How the four technologies score
Total fit score = Σ (your importance × the technology's base rating on each criterion).
The workhorse conventional process — cheapest and simplest to run, but needs more land and delivers only moderate effluent.
Moving-bed biofilm media boost capacity in a compact tank — a balanced all-rounder that upgrades easily.
Batch reactor with good effluent and a small footprint, at the cost of automation and PLC-driven operation.
Membrane filtration gives the smallest footprint and near-reuse-ready water — premium capex, power and membrane upkeep.
How this is scored
- Each technology carries a base rating from 1–5 on five criteria — footprint, effluent quality, cost, power and simplicity.
- Your importance sliders act as weights. The fit score for each option is Σ (importance × base rating), so a criterion you set to 5 counts far more than one set to 1.
- The option with the highest total is recommended. With everything equal, MBR wins on quality and footprint while Extended Aeration wins on cost and simplicity — your weights decide.
Base ratings are indicative of typical Indian package-plant experience for concept selection. Confirm against site constraints, discharge norms and life-cycle cost with a qualified consultant before finalising.
Related Guides — Deep-dive reading
How to Choose an STP Technology: ASP vs MBBR vs SBR vs MBR
A practical decision guide to picking the right sewage treatment technology for your building — matched to your footprint, effluent quality, budget, power bill and the skill of the people who will run it.
Sewage Treatment PlantsMembrane Bioreactor (MBR): The Highest-Quality STP Technology
How a membrane bioreactor swaps the settling clarifier for ultra-fine membranes to produce near-reuse-grade effluent in the smallest possible footprint — the working principle, the superb water quality, the high-MLSS advantage, and the real trade-offs of cost, fouling and power.
Sewage Treatment PlantsExtended Aeration Process: The Simple, Robust STP for Small Sites
A long-aeration variant of activated sludge that stabilises its own sludge in one tank — forgiving, low-maintenance and the quiet workhorse behind most packaged STPs for Indian apartments and institutions. How the long aeration works, the power-for-simplicity trade-off, and where it fits.
Sewage Treatment PlantsRelated Tools — You may also find these useful
STP Lifecycle Cost Comparison Tool
Compare MBBR, SBR and MBR sewage treatment plants on total lifecycle cost — capex plus lifetime energy — at your capacity, lifespan and power tariff, and see the lowest-cost technology.
STP CalculatorSTP Technology Comparison Matrix
Compare Extended Aeration, MBBR, SBR, MBR and UASB across six criteria, set your priority, and see the best-fit STP technology instantly.
ComparatorMBBR vs MBR Comparator
Weight seven decision criteria and get a scored recommendation between MBBR and MBR sewage-treatment technologies.
Comparator