Fate of microplastic particles during wastewater and sludge treatment - a comprehensive approach: KEYNOTE PRESENTATION

Proceedings

Fate of microplastic particles during wastewater and sludge treatment – a comprehensive approach: KEYNOTE PRESENTATION

Katrin Bauerfeld, Technische Universitaet (TU) Braunschweig, Institute for Sanitary and Environmental Engineering, Germany
(free)

Sludge stabilisation and solid-liquid separation
Figure: Manicke, 2020 modified after Zhang. u. Chen., 2020
ROS generation
heavy metals
PAH HCH
DDT, BPS,
DBP, PAE
sludge
Interaction of MPP and biomass:
▪ adsorption/desorption
▪ biofilm infiltration
▪ production of ROS
MPP transfer during dewatering:
▪ „displacement“
▪ dependent on plastic type density
Hypotheses:
▪ high MPP concentration reduces gas/CH4 yield during anaerobic digestion
▪ low density particles are transferred into sludge liquids during dewatering

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