Combined titrimetric respirometer as a real-time sensor to monitor the aerobic biodegradation process of different substrates

Article

Hoque, M. A., Aravinthan, V., Pradhan, N. M. and Sakhiya, A.. 2011. "Combined titrimetric respirometer as a real-time sensor to monitor the aerobic biodegradation process of different substrates." Journal of Applied Sciences. 11 (13), pp. 2299-2305. https://doi.org/10.3923/jas.2011.2299.2305
Article Title

Combined titrimetric respirometer as a real-time sensor to monitor the aerobic biodegradation process of different substrates

ERA Journal ID17620
Article CategoryArticle
AuthorsHoque, M. A. (Author), Aravinthan, V. (Author), Pradhan, N. M. (Author) and Sakhiya, A. (Author)
Journal TitleJournal of Applied Sciences
Journal Citation11 (13), pp. 2299-2305
Number of Pages7
Year2011
Place of PublicationFaisalabad, Pakistan
ISSN1607-8926
1812-5654
1812-5662
Digital Object Identifier (DOI)https://doi.org/10.3923/jas.2011.2299.2305
Web Address (URL)http://http://scialert.net/qredirect.php?doi=jas.2011.2299.2305&linkid=pdf
Abstract

Off-line analysis of liquid phase samples have traditionally been used for the determination of organics and nitrogen load for process control or optimization in full-scale wastewater treatment plants. However, these sampling and analysis methods are labor-intensive and time-consuming. Besides, the results are not generally available on real-time to the operators who struggle on daily basis to meet the constant discharge license conditions of the effluent while the influent conditions change diurnally with varying loads. Combined respirometric titrimetric sensor is an on-line method that has been developed recently, indicating the oxygen demand exerted by organic and nitrogen loadings. This sensor monitors both the oxygen uptake as well as the proton production/consumption resulting from the biological reactions in activated sludge system. The basic-data can then be interpreted to find out the short-term BOD, which can be used effectively for process control and optimization. Data interpretation and model development are still in progress as researchers keep on unraveling the mystery of how the substrates are biodegraded by activated sludge. Hence, in this study, it is aimed to develop an in-depth understanding about the aerobic biodegradation process using real-time biosensors through addition of different substrates such as acetate, surfactant (SDS) and ammonium to batch cultures of activated sludge by maintaining the pH of 7.8. Basic data interpretation was carried out to calculate oxygen uptake rate (OUR) as well as proton production/consumption rate from the raw data. Besides, the improved bio-kinetic model calibration was presented in this paper explaining the oxidation of different substrates in activated sludge system.

Keywordsoxygen uptake rate; OUR; proton; activated sludge; substrate; biodegradation
ANZSRC Field of Research 2020401199. Environmental engineering not elsewhere classified
400410. Wastewater treatment processes
401102. Environmentally sustainable engineering
Public Notes

Pagination of 2009 Conference copy is pp.454-460.

Byline AffiliationsDepartment of Agricultural, Civil and Environmental Engineering
Australian Centre for Sustainable Catchments
Centre of Excellence in Engineered Fibre Composites
EventICCBE 2009: 3rd International Conference on Chemical and Bioprocess Engineering
Institution of OriginUniversity of Southern Queensland
Event Details
ICCBE 2009: 3rd International Conference on Chemical and Bioprocess Engineering
Event Date
12 to end of 14 Aug 2009
Event Location
Kota Kinabalu, Malaysia
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