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Solutions to microplastic pollution - removal of microplastics from wastewater effluent with advanced wastewater treatment technologies

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Date
2017
Author(s)
Talvitie Julia
Mikola Anna
Koistinen Arto
Setälä Outi
Unique identifier
10.1016/j.watres.2017.07.005
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Citation
Talvitie Julia. Mikola Anna. Koistinen Arto. Setälä Outi. (2017). Solutions to microplastic pollution - removal of microplastics from wastewater effluent with advanced wastewater treatment technologies.  WATER RESEARCH, 123, 401-407. 10.1016/j.watres.2017.07.005.
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© Elsevier Ltd.
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CC BY-NC-ND https://creativecommons.org/licenses/by-nc-nd/4.0/
Abstract

Conventional wastewater treatment with primary and secondary treatment processes efficiently remove microplastics (MPs) from the wastewater. Despite the efficient removal, final effluents can act as entrance route of MPs, given the large volumes constantly discharged into the aquatic environments. This study investigated the removal of MPs from effluent in four different municipal wastewater treatment plants utilizing different advanced final-stage treatment technologies. The study included membrane bioreactor treating primary effluent and different tertiary treatment technologies (discfilter, rapid sand filtration and dissolved air flotation) treating secondary effluent. The MBR removed 99.9% of MPs during the treatment (from 6.9 to 0.005 MP L−1), rapid sand filter 97% (from 0.7 to 0.02 MP L−1), dissolved air flotation 95% (from 2.0 to 0.1 MP L−1) and discfilter 40–98.5% (from 0.5 – 2.0 to 0.03–0.3 MP L−1) of the MPs during the treatment. Our study shows that with advanced final-stage wastewater treatment technologies WWTPs can substantially reduce the MP pollution discharged from wastewater treatment plants into the aquatic environments.

Subjects
Microplastics   Wastewater effluent   Tertiary treatments   MBR   
URI
https://erepo.uef.fi/handle/123456789/4394
Link to the original item
http://dx.doi.org/10.1016/j.watres.2017.07.005
Publisher
Elsevier BV
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  • Luonnontieteiden ja metsätieteiden tiedekunta [1109]
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