Evaluación de la Remoción de Nitrógeno, Fósforo y Sulfuros en Agua Residual Doméstica, Utilizando Phragmites australis en Bioreactores

Abstract

ResumenEn el presente estudio se evaluó la remoción de nitrógeno, fósforo y sulfuros en un agua residual doméstica mediante fitorremediación utilizando Phragmites australis en bioreactores a escala de laboratorio. Se determinó el estudio las condiciones hidráulicas en reactores analizando las variables de relación geométrica largo:ancho (4:1 y 1:4) y usando un medio filtrante (grava/arena). Adicionalmente se evaluó el crecimiento de P. australis en los reactores y se analizó los porcentajes de remoción para cada configuración. Los resultados hidráulicos indicaron que los reactores con configuración 4:1 presentan un comportamiento de flujo a pistón contrario a los reactores en configuración 1:4 que presentan una mayor tendencia de flujo mezclado. Los valores de remoción de contaminantes indican mayor remoción de fósforo (60 a 90%) en todos los medios filtrantes de los bioreactores y menor remoción de nitrógeno (13%). Los sulfuros fueron removidos en un 20%. El mayor porcentaje de remoción se presentó en los reactores de grava 4:1, siendo esta la mejor condición para optimizar la extracción usando P. australis. Palabras clave: condiciones hidráulicas, configuración geométrica, Phragmites australis, remoción de nutrientes Evaluation of Nitrogen, Phosphorus and Sulphur Removal in Domestic Wastewater, using Phragmites australis in bioreactors AbstractIn the present study, nitrogen, phosphorus and sulfur removal was evaluated in domestic wastewater by phytoremediation using Phragmites australis in laboratory scale bioreactors. The hydraulic conditions in the reactor were determined by analyzing the geometric variables long:width ratio (4: 1 and 1: 4) and using a filter medium (gravel / sand). Additionally, the P. australis growth was evaluated and removal percentages for each configuration were analyzed. The results indicated that water reactor with setting 4:1 present piston flow while configuration 1:4 present a behavior similar to mixed flow. Values of contaminant removal indicate higher phosphorus removal (60 to 90%) in all reactors and lower nitrogen removal (13%). The sulfides removal was 20%. The highest percentage of removal was presented in reactors gravel 4: 1 being the best condition to optimize the extraction of P. australis.

A turbidity sensor development based on NL-PI observers: Experimental application to the control of a Sinaloa’s River Spirulina maxima cultivation

“…In this sense, the treatment of wastewater employing bioreactors is a potentially useful alternative for the control of water quality parameters since these bioreactors are a subsystem of water sources [46]. For this reason, microalgae are usually produced in photobioreactors in a controlled manner as a way of controlling the contamination of water sources [47,48]. In some types of microalgae, the property of multiform metabolism to be able to obtain energy for the growth of biomass is presented: autotroph and heterotroph; Spirulina maxima is one of these types of organisms.…”

Effects of Ornamental Plant Density and Mineral/Plastic Media on the Removal of Domestic Wastewater Pollutants by Home Wetlands Technology

“…In HSSF-CWs the aerobic conditions occur mainly in the rhizosphere zone. [51,52]. The concentration of NO 3 -N (Figure 5c,d) in the influent was 4.22 ± 0.18 mg/L for both substrates, and after treatment it decreased significantly (P = 0.001) in systems with vegetation, 2.97 ± 0.10 mg/L in PET and 2.91 ± 0.18 in PRS respectively were detected, but not in systems without vegetation (3.65 ± 0.83 mg/L and 2.81 ± 0.18 mg/L in PET and PRS substrate).…”