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| Mancilla Villalobos,Rodrigo; Zúñiga,Jimena; Salgado,Eduardo; Schiappacasse,Maria Cristina; Chamy Maggi,Rolando. |
| 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... |
| Tipo: Journal article |
Palavras-chave: Constructed wetlands; Domestic wastewater treatment; Horizontal subsurface flow system; Mediterranean climate. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-34582013000400005 |
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| Miranda,Suymara T.; Matos,Antonio T.; Matos,Mateus P.; Borges,Alisson C.; Baptestin,Gheila C. F.. |
| ABSTRACT This study aimed to characterize the material composition responsible for clogging the porous medium of horizontal subsurface flow constructed wetland (HSSF–CW) systems, which is detrimental to a proper system operation. Six completely clogged HSSF–CWs were used after treatment of swine wastewater. Operating conditions of these systems were named CW–C (HSSF– CW 1 and HSSF–CW 4, non-cultivated, i.e. controls), CW–T (HSSF–CW 2 and HSSF–CW 5, cultivated with Tifton 85 (Cynodon spp.)), and CW–A (HSSF–CW 3 and HSSF–CW 6, cultivated with alligator weed (Alternanthera philoxeroides)). The results showed that most of the clogging material was composed of total fixed solids (95, 84, and 82% in CW–C, CW–T, and CW–A, respectively). However, total volatile... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Constructed wetlands; Clogging; Porous medium. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000300463 |
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| Baptestini,Gheila C. F.; Matos,Antonio T.; Martinez,Mauro A.; Borges,Alisson C.; Matos,Mateus P.. |
| ABSTRACT Many modifications in hydrodynamic conditions occur inside the bed of a horizontal subsurface flow constructed wetland (HSSF–CW) in operation. Studies on hydraulic conductivity measurement techniques in HSSF–CW are imperative since the monitoring of flow conditions is essential for understanding and controlling its clogging. This study aimed to assess the hydrodynamic behavior in HSSF–CW by means of saturated hydraulic conductivity (Ks) analysis. For this, six HSSF–CW were used: two non-cultivated (control), two cultivated with Tifton 85 (Cynodon spp.), and two cultivated with alligator weed (Alternanthera philoxeroides). Application of swine wastewater (SW) in HSSF–CW started on June 15, 2011, with Ks measurement period between September 9 and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydrodynamic conditions; Clogging; Constructed wetlands; Wastewater treatment. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000200333 |
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| Omotade, Ifeoluwa Funmilola. |
| A field experiment was conducted to determine the growth and yield performance of hot pepper using aquaculture wastewater. Some parameters used as indicies to ascertain the usability of wastewaters such as pH, Total Suspended Solids (TSS), Dissolved Oxygen (DO), Chemical Oxygen Demand (COD), Biochemical Oxygen Demand (BOD), nitrate, phosphate, chloride and Electrical Conductivity (EC) were also considered in the analysis. Soil analysis was also carried out to determine the quantity of the nutrients that affect the growth and yield performance of the pepper. ANOVA was used as a statistical tool for the analysis. The research was carried out at the Department of Fisheries and Aquaculture Technology, Teaching and Research Farm, the Federal University of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil and water engineering; Environmental engineering Aquaculture wastewater; Constructed wetlands; Hot pepper. |
| Ano: 2019 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/5266 |
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