A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Particle balance and return loops for microplastics in a tertiary-level wastewater treatment plant (2021)


Salmi, P., Ryymin, K., Karjalainen, A. K., Mikola, A., Uurasjärvi, E., & Talvitie, J. (2021). Particle balance and return loops for microplastics in a tertiary-level wastewater treatment plant. Water Science and Technology, 84(1), 89-100. https://doi.org/10.2166/wst.2021.209


JYU-tekijät tai -toimittajat


Julkaisun tiedot

Julkaisun kaikki tekijät tai toimittajatSalmi, Pauliina; Ryymin, Kalle; Karjalainen, Anna K.; Mikola, Anna; Uurasjärvi, Emilia; Talvitie, Julia

Lehti tai sarjaWater Science and Technology

ISSN0273-1223

eISSN1996-9732

Julkaisuvuosi2021

Ilmestymispäivä31.05.2021

Volyymi84

Lehden numero1

Artikkelin sivunumerot89-100

KustantajaIWA Publishing

JulkaisumaaBritannia

Julkaisun kielienglanti

DOIhttps://doi.org/10.2166/wst.2021.209

Linkki tutkimusaineistoonhttp://urn.fi/URN:NBN:fi:jyu-202009035741

Julkaisun avoin saatavuusAvoimesti saatavilla

Julkaisukanavan avoin saatavuusKokonaan avoin julkaisukanava

Julkaisu on rinnakkaistallennettu (JYX)https://jyx.jyu.fi/handle/123456789/76137


Tiivistelmä

Microplastics (MPs) from households, stormwater, and various industries are transported to wastewater treatment plants (WWTPs), where a high proportion of them are captured before discharging their residuals to watersheds. Although recent studies have indicated that the removed MPs are mainly retained in wastewater sludge, sludge treatment processes have gained less attention in MP research than water streams at primary, secondary, and tertiary treatments. In this study, we sampled twelve different process steps in a tertiary-level municipal WWTP in central Finland. Our results showed that, compared to the plant influent load, three times more MPs circulated via reject water from the sludge centrifugation back to the beginning of the treatment process. Especially fibrous MPs were abundant in the dewatered sludge, whereas fragment-like MPs were observed in an aqueous stream. We concluded that, compared to the tertiary effluent, sludge treatment is the major exit route for MPs into the environment, but sludge treatment is also a return loop to the beginning of the process. Our sampling campaign also demonstrated that WWTPs with varying hydraulic conditions (such as the one studied here) benefit from disc filter–based tertiary treatments in MP removal.


YSO-asiasanatvedenpuhdistusjäteveden käsittelymikroroskatjätevesilietejätevedenpuhdistamot

Vapaat asiasanatenzymatic purification; microplastics; reject water; return loop; wastewater sludge


Liittyvät organisaatiot


Liittyvät tutkimusaineistot


OKM-raportointiKyllä

Raportointivuosi2021

JUFO-taso1


Viimeisin päivitys 2024-26-03 klo 09:20