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Aeration Process in Bioreactors as the Main Energy Consumer in a Wastewater Treatment Plant. Review of Solutions and Methods of Process Optimization
Abstract
Due to the key role of the biological decomposition process of organic compounds in wastewater treatment, a very important thing is appropriate aeration of activated sludge, because microorganisms have to be supplied with an appropriate amount of oxygen. Aeration is one of the most energy-consuming processes in the conventional activated sludge systems of wastewater treatment technology (may consume from 50% to 90% of electricity used by a plant), which makes it the most cost-generating process incurred by treatment plants. The paper presents the construction of aeration systems, their classification as well as parameters and factors that significantly affect the aeration process e.g., oxygen transfer effciency, diffuser fouling, methods of dealing with diffuser fouling, diffuser selection. Additionally, there are briefly presented “smart control” systems in wastewater treatment and effect of application control strategy based on Supervisory Control and Data Acquisition system connected with the decrease in the energy consumption for aeration of bioreactors with activated sludge. It is noted that before the process is optimized, the system should be equipped with suitable metering devices. Only when relevant data is available, the improvements can be carried out. However, it’s important, that the operator should regularly maintain good condition and high effciency of diffusers.
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Authors (4)
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Sylwia Duda
- Politechnika Lubelska Wydział Inżynierii Środowiska
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Grzegorz Łagód Dr inż.
- Politechnika Lubelska Wydział Inżynierii Środowiska
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Details
- Category:
- Articles
- Type:
- artykuły w czasopismach
- Published in:
-
Processes
no. 7,
pages 311 - 332,
ISSN: 2227-9717 - Language:
- English
- Publication year:
- 2019
- Bibliographic description:
- Drewnowski J., Remiszewska-Skwarek A., Duda S., Łagód G.: Aeration Process in Bioreactors as the Main Energy Consumer in a Wastewater Treatment Plant. Review of Solutions and Methods of Process Optimization// Processes -Vol. 7,iss. 5 (2019), s.311-332
- DOI:
- Digital Object Identifier (open in new tab) 10.3390/pr7050311
- Sources of funding:
-
- Statutory activity/subsidy
- Verified by:
- Gdańsk University of Technology
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