DISEÑO DE UN MODELO EXPERIMENTAL DE FILTRO PERCOLADOR UTILIZANDO ESTOPA DE COCO COMO MEDIO FILTRANTE, PARA LA REDUCCIÓN DE NITRÓGENO Y FÓSFORO TOTAL DE LAS AGUAS RESIDUALES DOMÉSTICAS PROCEDENTES DE LA PLANTA PILOTO DE TRATAMIENTO AURORA II “ING. ARTURO P

Abstract

The hydraulic design of an experimental model of trickling filter was made using coir pith as filtering medium. The following physico- chemical characteristics of Coir were found: absorption 164,42%, density 0,22 g/cm3, specific surface area 50 m²/m³, moisture 11,87%, total dry matter 88,13%, ether extract 0,33%, crude fiber 45,83%, crude protein 2,15%, ash 5,63%, nitrogen free extract 46,06% and potential hydrogen units of 5,01. For calculated the design parameters were used Eckenfelder and Bruce & Merkens’ equations, the result of this were: flow 1,21 m³/d, retention time 45 s, filtration rate 4,59 m³/m²d, vertical hydraulic load 2,29 m³/m³d, hydraulic surface 0,046 m³/m²d, pollutant load 0,2178 kg BOD₅/d, vertical organic load 0,4122 kg DBO₅/m³d and organic surface load 0,0082 kg DBO₅/m²d. The evaluation of the experimental model regarding nitrogen and total phosphorus was 41 mg/l at the entrance to 27 mg/l at output, with 33% efficiency in total Nitrogen, 11,0 mg/l at the entrance to 13,1 mg/l in the output, with an efficiency of 24% negative total Phosphorus (-24%)