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NUTRIENT REMOVAL FROM SWINE WASTEWATER IN A COMBINED VERTICAL AND HORIZONTAL FLOW CONSTRUCTED WETLAND SYSTEM REA
Bôas,Regina B. Vilas; Fia,Ronaldo; Fia,Fátima R. L.; Campos,Alessandro T.; Souza,Gabriela R. de.
ABSTRACT This study aimed to assess the performance of a combined vertical flow (VFCW) and horizontal subsurface-flow (HFCW) constructed wetland systems built on a pilot scale and submitted to different configurations and organic load application rates of pre-treated swine wastewater (SWW) in anaerobic systems on the nitrogen and phosphorus removal. The average values of redox potential in the systems were between anoxic and aerobic conditions, favoring an increased nitrate concentration in VFCW. Nitrogen removal by VFCW–HFCW system can be considered as satisfactory, reaching removal values of 75%. VFCW and HFCW proved to be limited in phosphorus removal, reaching values of 48%.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cynodon spp; Phosphorus; Nitrogen; Post-treatment; Typha sp.
Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000300411
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TREATMENT OF SEPTIC TANK SLUDGE IN A VERTICAL FLOW CONSTRUCTED WETLAND SYSTEM REA
Andrade,Cynthia F.; Sperling,Marcos Von; Manjate,Elias S..
ABSTRACT: The study consisted of the evaluation of the treatment of septic tank sludge in a vertical constructed wetland system (CW), built according to the first stage of the French system. The system operated also for sewage treatment and one of the beds (area of 29.1 m2, height of the support medium of 0.7 m and planted with Tifton 85 grass, Cynodon dactylon Pers), began to receive the application of sludge from clean-pit trucks once a week. The percolated liquid was directed to post-treatment in the other two beds of the French system. The application of the raw sludge had average hydraulic loading rate of 13.1 m3/m2.year and solids loading rate of 81 kgTS/m2.year. The system improved the quality of percolated liquid in terms of carbonaceous and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Constructed wetlands; Septic tank; Post-treatment; Sludge.
Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000400811
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Ambiance rose production and nutrient supply in soil irrigated with treated sewage AGRIAMBI
Gabrielli,Giuliano; Paixão,Jorge L. da; Coraucci,Bruno; Tonetti,Adriano L..
Tipo: Info:eu-repo/semantics/article Palavras-chave: Wastewater reuse; Post-treatment; Eutrophication.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000800755
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