Please use this identifier to cite or link to this item: https://ir.swu.ac.th/jspui/handle/123456789/13011
ชื่อเรื่อง: Use of aged sludge bioaugmentation in two-stage activated sludge system to enhance the biodegradation of toxic organic compounds in high strength wastewater
ผู้แต่ง: Boonnorat J.
Techkarnjanaruk S.
Honda R.
Angthong S.
Boonapatcharoen N.
Muenmee S.
Prachanurak P.
Keywords: 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
วันที่เผยแพร่: 2018
บทคัดย่อ: 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
URI: https://ir.swu.ac.th/jspui/handle/123456789/13011
https://www.scopus.com/inward/record.uri?eid=2-s2.0-85047377343&doi=10.1016%2fj.chemosphere.2018.03.084&partnerID=40&md5=0f26de3f081773b8b82194793d196e5e
ISSN: 456535
Appears in Collections:Scopus 1983-2021

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