Variability in Nutrient Dissipation in a Wastewater Treatment Plant in Patagonia: A Two-Year Overview.
Constructed wetlands are environmental solutions that mitigate the impacts of urban effluents. It is unclear how the performance of these wastewater treatment plants (WWTP) is affected by climatic conditions. The dissipation of nutrients, suspended solids, and changes in dissolved oxygen were invest...
| Published in: | Environmental Management Vol. 71; no. 4; pp. 773 - 785 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Published: |
Springer Nature
Apr2023
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| Online Access: | View this record in EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=162470666&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 162470666 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 0364152X O5H jtl: Environmental Management issn: 0364152X maglogo: N pubinfo: dt: Apr2023 vid: 71 iid: 4 pid: 237 pub: Springer Nature place: New York, New York artinfo: ui: 162470666 160666203 10.1007/s00267-022-01761-1 162470666 ppf: 773 ppct: 12 formats: fmt: – @attributes: type: T – @attributes: type: P tig: atl: Variability in Nutrient Dissipation in a Wastewater Treatment Plant in Patagonia: A Two-Year Overview. aug: au: Manzo, Luz María Epele, Luis Beltrán Horak, Cristina Natalia Assef, Yanina Andrea Miserendino, María Laura affil: Centro de Investigación Esquel de Montaña y Estepa Patagónica (CONICET-UNPSJB), Roca 780, 9200, Esquel, Chubut, Argentina sug: ab: Constructed wetlands are environmental solutions that mitigate the impacts of urban effluents. It is unclear how the performance of these wastewater treatment plants (WWTP) is affected by climatic conditions. The dissipation of nutrients, suspended solids, and changes in dissolved oxygen were investigated on a monthly basis over two years (2018/2019) at six sampling points across a WWTP located in Esquel, Patagonia. It was predicted that climatic variables (rain pattern and air temperature) would affect the functioning and efficiency of the WWTP (i.e., via nutrient load mitigation and sediment retention). Rainfall and temporal patterns differed markedly between and throughout the two years, leading to a clear seasonality in the transformation of pollutants. Nitrate loads were significantly higher in 2018 than in 2019 suggesting some degree of operational failure, whereas ammonia levels in treated effluents were extremely high during both years, with marked peaks occurring during autumn 2018 and summer 2019. The WWTP was moderately successful (~36%) in reducing TSS contents during 2018 but was inefficient in 2019. Ammonia levels in receiving waters underwent dilution due to rains rather than due to adequate WWTP nutrient retention. In terms of nutrients, effluent values exceeded those established by governmental regulation during most months, but worsened during summer coinciding with low flows. This lack of predictability for the values of the treated effluent strongly jeopardizes the ecological integrity and biodiversity of the receiving stream. pubtype: Academic Journal doctype: Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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