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Manual treatment of urban wastewater by chemical precipitation for production of hydroponic nutrient solutions

2020-04Artigo científico Acesso aberto
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dc.contributor.authorCorreia, Tânia
dc.contributor.authorRegato, Mariana
dc.contributor.authorAlmeida, Adelaide
dc.contributor.authorSantos, Teresa
dc.contributor.authorAmaral, Leonor
dc.contributor.authorCarvalho, Fátima
dc.contributor.institutionCENSE - Centro de Investigação em Ambiente e Sustentabilidade
dc.contributor.pblPolskie Towarzystwo Inzynierii Ekologicznej (PTIE)
dc.date.accessioned2021-05-03T22:56:06Z
dc.date.available2021-05-03T22:56:06Z
dc.date.issued2020-04
dc.descriptionPublication is funded by the Polish National Agency for Academic Exchange under the International Academic Partnerships Programme from the project "Organization of the 9th International Scientific and Technical Conference entitled Environmental Engineering, Photogrammetry, Geoinformatics - Modern Technologies and Development Perspectives". Project with financial support of FCT, I.P./MCTES through national funds (PIDDAC) and the Portuguese Polar Program (PROPOLAR).
dc.description.abstractAn urban wastewater treatment system was developed in Portugal for posterior in situ feasibility testing at the Bulgarian Antarctic Base, using its domestic wastewater. The aim of this system was to develop a low cost, integrated approach for wastewater treatment and production of nutrient solutions (NS) for hydroponic cultivation of lettuce (Lactuca sativa var. crispa) in Antarctic stations, or any other place where the lack of resources and logistical hardships make the wastewater treatment and reuse impractical. The wastewater treatment system consisted in manual agitation lime chemical precipitation (LCPm) and effluent natural neutralization (NN) by atmospheric CO2 carbonation reactions (with and without air injection). The resulting effluent/NS had macronutrient values (nitrogen and phosphorous) for the hydroponic cultivation of lettuce below the values of commercial NS and a high pH (pH ≈ 8). The treatment achieved a total coliform removal rate of 100%. Before the LCPm treatment system development, several lime-based reagents were tested under different reaction pH and using mechanical agitation, to access their organic matter removal efficiency, as chemical oxygen demand (COD). The best COD removal results obtained were: commercial Ca(OH)2. (pH 11.5-89%), reagent grade Ca(OH)2 (pH 11.5-79%) and CaO (pH 12.0-64%).en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent10
dc.format.extent1378331
dc.identifier.doi10.12911/22998993/118286
dc.identifier.issn2299-8993
dc.identifier.otherPURE: 29527436
dc.identifier.otherPURE UUID: 36c0eab3-1563-4450-ac83-a6c603431260
dc.identifier.otherScopus: 85083641973
dc.identifier.otherWOS: 000526862500018
dc.identifier.otherORCID: /0000-0003-1125-1764/work/93243364
dc.identifier.urihttp://hdl.handle.net/10362/116910
dc.identifier.urlhttps://www.scopus.com/pages/publications/85083641973
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAntarctica
dc.subjectChemical precipitation
dc.subjectCO capture
dc.subjectHydroponics
dc.subjectUrban wastewater
dc.subjectEcology, Evolution, Behavior and Systematics
dc.subjectGeneral Environmental Science
dc.subjectSDG 6 - Clean Water and Sanitation
dc.titleManual treatment of urban wastewater by chemical precipitation for production of hydroponic nutrient solutionsen
dc.typejournal article
degois.publication.firstPage143
degois.publication.issue3
degois.publication.lastPage152
degois.publication.titleJournal of Ecological Engineering
degois.publication.volume21
dspace.entity.typePublication
rcaap.rightsopenAccess

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