Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions
An 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 the development of a low cost, integrated approach for wastewater treatment and production of nutrient s...
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Polish Society of Ecological Engineering (PTIE)
2020
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ftdoajarticles:oai:doaj.org/article:0d2f75c8f0a54d309b64fa2407268bed 2023-05-15T13:33:54+02:00 Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions Tânia Correia Mariana Regato Adelaide Almeida Teresa Santos Leonor Amaral Maria de Fátima Nunes Carvalho 2020-04-01T00:00:00Z https://doi.org/10.12911/22998993/118286 https://doaj.org/article/0d2f75c8f0a54d309b64fa2407268bed EN eng Polish Society of Ecological Engineering (PTIE) http://www.journalssystem.com/jeeng/MANUAL-TREATMENT-OF-URBAN-WASTEWATER-BY-CHEMICAL-PRECIPITATION-FOR-PRODUCTION-OF,118286,0,2.html https://doaj.org/toc/2299-8993 2299-8993 doi:10.12911/22998993/118286 https://doaj.org/article/0d2f75c8f0a54d309b64fa2407268bed Journal of Ecological Engineering, Vol 21, Iss 3, Pp 143-152 (2020) urban wastewater antarctica chemical precipitation co2 capture hydroponics Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 article 2020 ftdoajarticles https://doi.org/10.12911/22998993/118286 2022-12-31T05:36:59Z An 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 the development of 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 lack of resources and logistical hardships make 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 bellow 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, under different reaction pHs and using mechanical agitation, were tested to access their organic matter removal efficiency, as chemical oxygen demand (COD). The best 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%). Article in Journal/Newspaper Antarc* Antarctic Antarctica Directory of Open Access Journals: DOAJ Articles Antarctic Journal of Ecological Engineering 21 3 143 152 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
urban wastewater antarctica chemical precipitation co2 capture hydroponics Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 |
spellingShingle |
urban wastewater antarctica chemical precipitation co2 capture hydroponics Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 Tânia Correia Mariana Regato Adelaide Almeida Teresa Santos Leonor Amaral Maria de Fátima Nunes Carvalho Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
topic_facet |
urban wastewater antarctica chemical precipitation co2 capture hydroponics Environmental technology. Sanitary engineering TD1-1066 Environmental sciences GE1-350 |
description |
An 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 the development of 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 lack of resources and logistical hardships make 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 bellow 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, under different reaction pHs and using mechanical agitation, were tested to access their organic matter removal efficiency, as chemical oxygen demand (COD). The best 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%). |
format |
Article in Journal/Newspaper |
author |
Tânia Correia Mariana Regato Adelaide Almeida Teresa Santos Leonor Amaral Maria de Fátima Nunes Carvalho |
author_facet |
Tânia Correia Mariana Regato Adelaide Almeida Teresa Santos Leonor Amaral Maria de Fátima Nunes Carvalho |
author_sort |
Tânia Correia |
title |
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
title_short |
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
title_full |
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
title_fullStr |
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
title_full_unstemmed |
Manual Treatment of Urban Wastewater by Chemical Precipitation for Production of Hydroponic Nutrient Solutions |
title_sort |
manual treatment of urban wastewater by chemical precipitation for production of hydroponic nutrient solutions |
publisher |
Polish Society of Ecological Engineering (PTIE) |
publishDate |
2020 |
url |
https://doi.org/10.12911/22998993/118286 https://doaj.org/article/0d2f75c8f0a54d309b64fa2407268bed |
geographic |
Antarctic |
geographic_facet |
Antarctic |
genre |
Antarc* Antarctic Antarctica |
genre_facet |
Antarc* Antarctic Antarctica |
op_source |
Journal of Ecological Engineering, Vol 21, Iss 3, Pp 143-152 (2020) |
op_relation |
http://www.journalssystem.com/jeeng/MANUAL-TREATMENT-OF-URBAN-WASTEWATER-BY-CHEMICAL-PRECIPITATION-FOR-PRODUCTION-OF,118286,0,2.html https://doaj.org/toc/2299-8993 2299-8993 doi:10.12911/22998993/118286 https://doaj.org/article/0d2f75c8f0a54d309b64fa2407268bed |
op_doi |
https://doi.org/10.12911/22998993/118286 |
container_title |
Journal of Ecological Engineering |
container_volume |
21 |
container_issue |
3 |
container_start_page |
143 |
op_container_end_page |
152 |
_version_ |
1766046887112081408 |