Septic Tank (ST)-Up Flow Anaerobic Filter (UFAF)-Subsurface Flow Constructed Wetland (SSF-CW) systems aimed at wastewater treatment in small localities in Colombia
| Autor: | Juan David Villegas Gómez, Jhonniers Guerrero Erazo, Juan Mauricio Castaño Rojas, Diego Paredes Cuervo |
|---|---|
| Jazyk: | English<br />Spanish; Castilian |
| Rok vydání: | 2006 |
| Předmět: |
Saneamiento hídrico
participación comunitaria tanque séptico filtros anaerobios de flujo ascendente humedales artificiales de flujo subsuperficial Water sanitation communitarian participation septic tank up flow anaerobic filter subsurface flow constructed wetland Engineering (General). Civil engineering (General) TA1-2040 Technology (General) T1-995 |
| Zdroj: | Revista Técnica de la Facultad de Ingeniería, Vol 29, Iss 3, Pp 269-281 (2006) |
| Druh dokumentu: | article |
| ISSN: | 0254-0770 |
| Popis: | Se estudiaron modificaciones al conjunto Tanque Séptico (TS), Filtro Anaeróbio de Flujo Ascendente (FAFA), y Humedales Artificiales de Flujo Subsuperficial (HAFSS) para el tratamiento de aguas residuales domésticas (ARD) en pequeños municipios. En primer lugar, se evaluó el empleo de medios de soporte de grava y anillos de guadua en FAFAs con tiempos de residencia hidráulica (TRH) inferiores a 8 horas, tratando un efluente de TS. Se obtuvieron remociones de 49,6% ± 2,6 en DQO, de 56,6% ± 2,1 en DBO5 y 62,4% ± 2,3 en SST, sin detectarse diferencias estadísticamente significativas entre tratamientos. Como complemento al sistema TS-FAFA, se evaluaron unidades piloto de HAFSS (TRH < 1 día) con lechos de grava y arena, usando 3 especies vegetales de la zona cafetera colombiana: Typha (Typha sp.), Junco (Juncus sp.) y Jengibre (Renealmia alpina). Se reportaron remociones de 50,6% ± 21,7 en DBO5 y reducciones en indicadores bacterianos inferiores a 2 órdenes logarítmicos, sin encontrarse diferencias significativas. Las tasas de remoción globales obtenidas, en términos de DBO5, del conjunto TS-FAFA-HAFSS fueron del 80%. Estos resultados se usaron para optimizar un sistema de tratamiento de ARD en una localidad colombiana.Research was done on Septic Tank (ST), Up Flow Anaerobic Filter (UFAF) and Subsurface Flow Constructed Wetlands (SSF-CW) arrangements, aimed at domestic wastewater (DWW) treatment in Colombian small localities. UFAF (commonly used as complementary treatment for ST effluents) with hydraulic residence times (HRT) up to 8 hours were evaluated using gravel and bamboo rings as supporting media. Removal efficiencies of 49.6% ± 2.6 of COD, 56.6% ± 2.1 of BOD5 and 62.4% ± 2.3 of TSS, were obtained. No significant statistical differences were detected between treatments. Pilots units of SSF-CW with HRTs up to 1 day were evaluated in order to reach a minimum of 80% removal efficiency on DWW, as established by Colombian legislation. Typha sp, Juncus sp and Renealmia alpina, vegetal species of the Colombian coffee-growing region, were planted in gravel and sand media. The systems reached BOD5 removal efficiencies of 50.6% ± 21, and indicator bacteria reductions near to 2 log cycles. No significant differences in efficiency were attained. The BOD5 removal rates encountered, in the ST-UFAF-SSF-CW package, during the study allows 80%. The results obtained from the present research were used in scaling-up a DWW treatment system in a small locality in Colombia. |
| Databáze: | Directory of Open Access Journals |
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