Publication:
Use of aged sludge bioaugmentation in two-stage activated sludge system to enhance the biodegradation of toxic organic compounds in high strength wastewater

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Issued Date

2018

Resource Type

Article

File Type

application/pdf

ISSN

456535

DOI

10.1016/j.chemosphere.2018.03.084

Other identifier(s)

2-s2.0-85047377343

Rights Holder(s)

Scopus

Bibliographic Citation

Chemosphere. Vol 202, (2018), p.208-217

Suggested Citation

Boonnorat J., Techkarnjanaruk S., Honda R., Angthong S., Boonapatcharoen N., Muenmee S., Prachanurak P. Use of aged sludge bioaugmentation in two-stage activated sludge system to enhance the biodegradation of toxic organic compounds in high strength wastewater. Chemosphere. Vol 202, (2018), p.208-217. doi:10.1016/j.chemosphere.2018.03.084 Retrieved from: https://hdl.handle.net/20.500.14740/4055

Title

Use of aged sludge bioaugmentation in two-stage activated sludge system to enhance the biodegradation of toxic organic compounds in high strength wastewater

Author(s)

Boonnorat J.
 Techkarnjanaruk S.
 Honda R.
 Angthong S.
 Boonapatcharoen N.
 Muenmee S.
 Prachanurak P.

Abstract

This research investigates the toxic organic compounds biodegradation efficiency of two-stage activated sludge systems with (bioaugmented) and without aged sludge bioaugmentation (non-bioaugmented). The influent was a mixture of leachate and agriculture wastewater (1:1, v/v), used as the representative high strength wastewater. The bioaugmented and non-bioaugmented systems were operated in parallel, with three levels (low, moderate, and high) of concentrations of organics, nitrogen, and toxic organic compounds in the influent (conditions 1, 2, and 3). The results showed that both systems could efficiently degrade the organic compounds. Nevertheless, the toxic organic compounds biodegradation efficiency of the bioaugmented system was higher than that of the non-bioaugmented one. The bioaugmentation enhanced the overall removal efficiency under conditions 1 and 2. However, the bioaugmented system became less effective under condition 3. Further analysis indicated that the bacterial groups essential to the toxic organic compounds biodegradation were abundant in the aged sludge, including heterotrophic bacteria, heterotrophic nitrifying bacteria, and nitrifying bacteria. The abundance of the effective bacteria improved the biodegradation and wastewater treatment performance of the bioaugmented system. In essence, the aged sludge bioaugmentation is a viable and eco-friendly solution to improving the treatment efficiency of the biological activated sludge system, despite limited biodegradation efficiency in an elevated compounds-concentration environment. © 2018 Elsevier Ltd

Subject(s)

Activated sludge process
 Agricultural robots
 Bacteria
 Efficiency
 Nitrification
 Organic compounds
 Wastewater treatment
 Activated sludge systems
 Aged sludge
 Bio-augmentation
 Biodegradation efficiency
 Heterotrophic bacterias
 High strength wastewater
 Micropollutants
 Toxic organic compounds
 Biodegradation
 Nitrogen
 Organic compound
 Toxic substance
 Organic compound
 Activated sludge
 Biodegradation
 Organic compound
 Performance assessment
 Pollutant removal
 Sludge
 Toxic substance
 Wastewater treatment
 Activated sludge
 Agriculture
 Article
 Bacterium
 Bioaugmentation
 Bioprocess
 Concentration (parameters)
 Controlled study
 Heterotrophy
 Microbial community
 Microbial degradation
 Nitrifying bacterium
 Sludge
 Waste water management
 Water quality
 Bioreactor
 Bioremediation
 Metabolism
 Microbiology
 Procedures
 Sewage
 Waste water
 Water pollutant
 Bacteria (microorganisms)
 Bacteria
 Biodegradation, Environmental
 Bioreactors
 Organic Chemicals
 Waste Disposal, Fluid
 Waste Water
 Water Pollutants, Chemical

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URI

https://hdl.handle.net/20.500.14740/4055

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Scopus: Year 1983-2021

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