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A Novel Bioreactor for High Density Cultivation of Diverse Microbial Communities

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Published on: December 25, 2015

Microbial community characterization, activity analysis and purifying efficiency in a biofilter process.

Hong Xiang¹, Xiwu Lu, Lihong Yin

¹School of Energy and Environment, Southeast University, Nanjing 210096, China. xiangrhong@yahoo.cn

Journal of Environmental Sciences (China)

|August 9, 2013

Summary

This summary is machine-generated.

Microbial growth on biologically activated carbon (BAC) filters stabilizes within 40 days, enhancing drinking water purification. Understanding these microbial dynamics improves biological treatment efficiency for cleaner water.

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Area of Science:

Environmental Microbiology
Water Treatment Technologies

Background:

Microbial communities on biologically activated carbon (BAC) are vital for drinking water purification.
Understanding microbial growth and metabolism is key to optimizing BAC filter efficiency.

Purpose of the Study:

To investigate microbial community dynamics and water quality during BAC filter start-up and steady-state.
To correlate microbial characteristics with the efficiency of drinking water treatment.

Main Methods:

Analysis of heterotrophic plate count (HPC), phospholipid, and dehydrogenase activity.
Assessment of microbial metabolic function and key water quality parameters (e.g., NH4(+)-N, COD(Mn)).
Monitoring filter performance during start-up and steady-state operation.

Main Results:

Microbial parameters (HPC, phospholipid, dehydrogenase) and functional diversity stabilized by day 40.
Significant removal rates for NH4(+)-N (80%) and COD(Mn) (28%) were achieved by day 40.
BAC filters effectively removed various pollutants including NH4(+)-N, NO2(-)-N, COD(Mn), UV254, and trace organics.

Conclusions:

Microbial communities on BAC filters reach a stable, effective state within approximately 40 days.
Optimizing biological treatment of drinking water can be enhanced by understanding microbial growth and metabolic shifts in BAC filters.