Biofilms

Front

What is a biofilm?

Back

A biofilm is a complex aggregation of microorganisms growing on a solid substrate, often encased in a protective extracellular matrix.

Front

What are biofilm reactors commonly used for?

Back

Biofilm reactors are often used for small scale domestic applications and wastewater treatment.

Front

What is hydraulic retention time?

Back

Hydraulic retention time is the average time that wastewater remains in a treatment system or reactor.

Front

What are the two key processes involved in biofilm reactors?

Back

The two key processes are mass-transfer and biochemical conversion.

Front

What is the first step in a moving bed biofilm reactor (MBBR)?

Back

The first step is hydraulic retention time.

Front

What biological processes occur in the biofilm of an MBBR?

Back

Aerobic and anoxic degradation of organic matter, nitrification, denitrification, and phosphorus removal.

Front

What is mass transfer in the context of biofilms?

Back

Mass transfer refers to the movement of substances (like nutrients and waste) to and from the biofilm.

Front

What role does the extracellular matrix play in biofilms?

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The extracellular matrix provides structural support and protection for the microorganisms within the biofilm.

Front

How do biofilms contribute to wastewater treatment?

Back

Biofilms facilitate the breakdown of organic matter and removal of nutrients through various biological processes.

Front

What is the significance of biofilm formation in wastewater treatment?

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Biofilm formation enhances the efficiency of microbial processes, leading to improved treatment outcomes.