Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile
Background: Constructed wetlands are a promising, cheap and effective wastewater treatment in small communities. The studies on these systems have been reported mainly from cold, tropical or subtropical climate regions. In this work we constructed a pilot plant with six horizontal subsurface flow co...
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| Lenguaje: | English |
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Pontificia Universidad Católica de Valparaíso
2013
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oai:scielo:S0717-345820130004000052013-08-22Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in ChileMancilla Villalobos,RodrigoZúñiga,JimenaSalgado,EduardoSchiappacasse,Maria CristinaChamy Maggi,Rolando constructed wetlands domestic wastewater treatment horizontal subsurface flow system Mediterranean climate Background: Constructed wetlands are a promising, cheap and effective wastewater treatment in small communities. The studies on these systems have been reported mainly from cold, tropical or subtropical climate regions. In this work we constructed a pilot plant with six horizontal subsurface flow constructed wetlands (HSSF CWs) with a surface area of 2 m² and a depth of 0.6 m each, planted with Typha latifolia or Scirpus sp., and filled with gravel (G) or fine gravel (FG) of 2.8 and 1.2 cm of diameter respectively, continuously fed with raw domestic wastewater. This experimental setup was evaluated over 280 days for the removal of organic matter and nutrients in a Mediterranean climate, near Valparaíso, Chile. The removal of total COD, NH4+-N and PO4-3-P was calculated, in order to assess by analysis of variance the effect of initial pollutants concentration, air temperature (season) and plant/support combination on the wetlands performance. Results: The Scirpus/FG combination showed the highest average removal of total COD of about 59%, and Typha/FG shows the highest removal of NH4+-N and PO4-3-P (49 and 32%, respectively). Furthermore, the removal of organic matter was independent of influent concentration, while mildly dependent of the season, unlike nutrients removal that was dependent on these two parameters. Media, plant and the plant/media combination influenced positively organic matter, ammonia and phosphorous removal, respectively. Conclusions: Overall, the results demonstrate the potential of wetlands in treatment of wastewater in Mediterranean regions and show how these can help to improve the quality of water in domestic zones without high-throughput technologies.info:eu-repo/semantics/openAccessPontificia Universidad Católica de ValparaísoElectronic Journal of Biotechnology v.16 n.4 20132013-07-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400005en10.2225/vol16-issue4-fulltext-5 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
constructed wetlands domestic wastewater treatment horizontal subsurface flow system Mediterranean climate |
| spellingShingle |
constructed wetlands domestic wastewater treatment horizontal subsurface flow system Mediterranean climate Mancilla Villalobos,Rodrigo Zúñiga,Jimena Salgado,Eduardo Schiappacasse,Maria Cristina Chamy Maggi,Rolando Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| description |
Background: Constructed wetlands are a promising, cheap and effective wastewater treatment in small communities. The studies on these systems have been reported mainly from cold, tropical or subtropical climate regions. In this work we constructed a pilot plant with six horizontal subsurface flow constructed wetlands (HSSF CWs) with a surface area of 2 m² and a depth of 0.6 m each, planted with Typha latifolia or Scirpus sp., and filled with gravel (G) or fine gravel (FG) of 2.8 and 1.2 cm of diameter respectively, continuously fed with raw domestic wastewater. This experimental setup was evaluated over 280 days for the removal of organic matter and nutrients in a Mediterranean climate, near Valparaíso, Chile. The removal of total COD, NH4+-N and PO4-3-P was calculated, in order to assess by analysis of variance the effect of initial pollutants concentration, air temperature (season) and plant/support combination on the wetlands performance. Results: The Scirpus/FG combination showed the highest average removal of total COD of about 59%, and Typha/FG shows the highest removal of NH4+-N and PO4-3-P (49 and 32%, respectively). Furthermore, the removal of organic matter was independent of influent concentration, while mildly dependent of the season, unlike nutrients removal that was dependent on these two parameters. Media, plant and the plant/media combination influenced positively organic matter, ammonia and phosphorous removal, respectively. Conclusions: Overall, the results demonstrate the potential of wetlands in treatment of wastewater in Mediterranean regions and show how these can help to improve the quality of water in domestic zones without high-throughput technologies. |
| author |
Mancilla Villalobos,Rodrigo Zúñiga,Jimena Salgado,Eduardo Schiappacasse,Maria Cristina Chamy Maggi,Rolando |
| author_facet |
Mancilla Villalobos,Rodrigo Zúñiga,Jimena Salgado,Eduardo Schiappacasse,Maria Cristina Chamy Maggi,Rolando |
| author_sort |
Mancilla Villalobos,Rodrigo |
| title |
Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| title_short |
Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| title_full |
Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| title_fullStr |
Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| title_full_unstemmed |
Constructed wetlands for domestic wastewater treatment in a Mediterranean climate region in Chile |
| title_sort |
constructed wetlands for domestic wastewater treatment in a mediterranean climate region in chile |
| publisher |
Pontificia Universidad Católica de Valparaíso |
| publishDate |
2013 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400005 |
| work_keys_str_mv |
AT mancillavillalobosrodrigo constructedwetlandsfordomesticwastewatertreatmentinamediterraneanclimateregioninchile AT zunigajimena constructedwetlandsfordomesticwastewatertreatmentinamediterraneanclimateregioninchile AT salgadoeduardo constructedwetlandsfordomesticwastewatertreatmentinamediterraneanclimateregioninchile AT schiappacassemariacristina constructedwetlandsfordomesticwastewatertreatmentinamediterraneanclimateregioninchile AT chamymaggirolando constructedwetlandsfordomesticwastewatertreatmentinamediterraneanclimateregioninchile |
| _version_ |
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