Name

Cost-effective PFAS mitigation: foam fractionation within activated sludge treatment

Speakers

Laura Piai

Authors

Laura Piai, Kay Schmidt and Hamed Rastegarian, Royal HaskoningDHV, Netherlands
Sanne Smith and Joséphine Van Ruiten, TU Delft, Netherlands

Description

Foam fractionation has been developed as a separate treatment step. However, in activated sludge systems, foam can be formed during the aeration step, an undesired process. By integrating foam fractionation in existing treatment steps, this undesired foam formation can instead be used to remove PFAS from water, without significant additional energy requirements and carbon emissions. Utilizing the existing aeration to create and capture foam makes the operational and capital costs negligible compared to conventional foam fractionation. This research investigates in pilot and full-scale the integration of foam fractionation in the aeration step of activated sludge for increasing PFAS removal from wastewater. The outcomes of this research are: 
1) Assessing PFAS removal when integrating foam fractionation with activated sludge; 
2) Assessing the impact of foam production and collection on organic matter and nutrients removal by activated sludge; 
3) Proposing a foam collection system for maximizing PFAS removal whilst keeping activated sludge process undisturbed.

Time

10:05 AM - 10:30 AM

Location Name

Room 3

Track

10:05 - 16:15 Micropollutants & Emerging Contaminants