Biological Aerated Filter

The biological aerated filter, BAF, was a new process developed around 1990s based on conventional biological filter and filters for potable water treatment, which was applied as tertiary treatment process at first and then developed as secondary treatment process. This process combines biological oxidation and filtration together in one structure, which eliminates the need for a secondary sedimentation.

Key Features and Benefits

High concentration of contaminant and organic load
Low infrastructure investment, low operation cost and energy consumption
Bio-film forms easily which allows early commissioning
Short hydraulic retention time and small tank footprint
Low infrastructure investment, low operation cost and energy consumption
Up to 98% SS removal
Up to 95% BOD₅ and 90% COD removal
KWI offers BAF specific aerator; air flow rate up to 0.43 m³/h

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Applications

BAF is applied as a form of secondary treatment and tertiary treatment in the following applications

Municipal sewage
Food processing wastewater
Brewery wastewater
Papermaking wastewater
Printing and dyeing wastewater
Upgrading of sewage and wastewater treatment plant

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Biological Aerated Filter

Key Features and Benefits

Applications

What we do

We design our process packages, proposing a wide range of customizable solutions to match market challenges.

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KWI offers its high level of expertise and innovative technologies in solid- liquid separation solutions to our clients.