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The evaluation of COD fractionation and modeling as a key factor for appropriate optimization and monitoring of modern cost-effective activated sludge systems
Abstract
A study was conducted to characterize the raw wastewater entering a modern cost effective municipal WWTP in Poland using two approaches; 1) a combination of modeling and carbonaceous oxygen demand (COD) fractionation using respirometric test coupled with model estimation (RTME) and 2) flocculation/filtration COD fractionation method combined with BOD measurements (FF-BOD). It was observed that the particulate fractions of COD obtained using FF-BOD method was higher than those estimated by RT-ME approach. Contrary to the above, the values of inert soluble fraction evaluated by FF-BOD method was significantly lower than RT-ME approach (2.4% and 3.9% respectively). Furthermore, the values for low colloidal and particulate fractions as well as soluble inert fractions were different than expected from a typical municipal wastewater. These observations suggest that even at low load (10% of the total wastewater treatment inflow), the industrial wastewater composition can significantly affect the characteristics of municipal wastewater which could also affect the performance and accuracy of respirometric tests. Therefore, in such cases, comparison of the respirometric tests with flocculation/filtration COD/BOD measurements are recommended. Oxygen uptake rate profile with settled wastewater and/or after coagulation- flocculation, however, could still be recommended as a “rapid” control method for monitoring/optimising modern cost-effective wastewater treatment plants.
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Authors (6)
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Sheena Kumari Dr
- Durban University of Technology Institute for Water and Wastewater Technology,
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Faizal Bux Prof.
- Durban University of Technology Institute for Water and Wastewater Technology,
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- Publication version
- Accepted or Published Version
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- Copyright (2019 Taylor & Francis Group, LLC)
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING
no. 54,
pages 736 - 744,
ISSN: 1093-4529 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Drewnowski J., Remiszewska-Skwarek A., Fudala-Książek S., Łuczkiewicz A., Kumari S., Bux F.: The evaluation of COD fractionation and modeling as a key factor for appropriate optimization and monitoring of modern cost-effective activated sludge systems// JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-TOXIC/HAZARDOUS SUBSTANCES & ENVIRONMENTAL ENGINEERING -Vol. 54,iss. 8 (2019), s.736-744
- DOI:
- Digital Object Identifier (open in new tab) 10.1080/10934529.2019.1592531
- Verified by:
- Gdańsk University of Technology
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Determination of COD Fractionation as a Key Factor for Appropriate Modelling and Monitoring of Activated Sludge Processes
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