Reduction of Foam in Sewage Treatment Plant by Using Pervious Concrete

DOI

No DOI

Published In

Volume 6, Issue 2 (2025)

Published Online

March-April 2025

Pages

105-110

Article Type

Case Study

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The project “Reduction of Foam in Sewage Treatment Plants by Using Pervious Concrete” aims to address the issue of formation of foam in aeration tanks, which is a frequent challenge in sewage treatment plants (STPs). Foam formation results from the presence of surfactants and organic matter found in the wastewater, which diminishes aeration effectiveness, as well as oxygen transfer. Chemical anti-foaming agents have, for a long time, been the most common solutions, but they are very expensive and environmentally unfriendly. In this project, the focus is placed on implementing the technology with the use of pervious concrete as a potentially environmentally beneficial option. Due to its elevated porosity, pervious concrete can also allow water to pass through, which may assist in controlling foam by enhancing air circulation and reducing surface tension of the wastewater. Different types of pervious concrete will be incorporated in the aeration tanks and their ability to absorb and reduce foam using wastewater will be evaluated. Important aspects such as foam height, foam stability, and treatment efficiency using COD, BOD measuring parameters will be assessed and evaluated against the tanks with solid concrete. the foam will decrease and therefore aeration and treatment efficiencies will be better. Eventually, this approach can lead to a decrease in the need for chemical foam inhibitors and provides a more effective solution to STPs problems.