Wastewater Treatment Technologies Compared

By BIOPOWER (BPG Renewables) · Updated June 2026 · Sewage Treatment

The main wastewater treatment technologies are Activated Sludge Process (ASP), Sequencing Batch Reactor (SBR), Moving Bed Biofilm Reactor (MBBR), and Membrane Bio-Reactor (MBR). MBR gives the highest water quality and smallest footprint, while ASP is the most economical for large, space-available sites.

How do the main technologies compare?

TechnologyFootprintOutput qualityRelative cost
ASPLargeGoodLow
SBRMediumGoodMedium
MBBRCompactVery goodMedium
MBRSmallestExcellentHigh

Which technology should I choose?

Choose ASP/SBR where land is available and budgets are tight; choose MBBR for compact, robust performance; choose MBR where the highest reuse-grade water and minimal footprint are essential.

Where does BIOPOWER fit in?

BIOPOWER designs STP and ETP systems across these technologies, matching the solution to your effluent profile, space, and reuse goals. Read the industrial STP guide for selection help.

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Frequently Asked Questions

What is the best wastewater treatment technology?

There is no single best — MBR offers the highest quality and smallest footprint, while ASP is most cost-effective for large sites. The right choice depends on space, budget, and reuse needs.

What does MBBR stand for?

MBBR stands for Moving Bed Biofilm Reactor, a compact biological treatment that uses suspended plastic carriers to grow biomass.

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