Diseño de un humedal artificial para el tratamiento de aguas residuales producidas en la zona de ordeño automático y potreros de la estación agropecuaria UTPL

Abstract

Abstract:Constructed wetlands represent an unconventional type of technology capable of purify discharges, such as those that originate in the stables of cattle farms and that they are generally discharged into bodies of fresh water, causing their contamination. This paper presents the design of an artificial wetland for the treatment of wastewater generated in the automatic milking area and paddocks of the station agricultural UTPL. The pH, conductivity, temperature, biochemical oxygen demand (BOD5), chemical oxygen demand (COD), total nitrogen (NT), total phosphorus (FT), oils and fats total dissolved solids (SDT) and total solids (TS) of the influent. As a result of the characterization it was obtained that the main parameters affected are the BOD5 (428.85 mg/l), COD (892 mg/L) and fecal coliforms (18.2E105 NPM/100ml). Based on the results of characterization, the hydraulic design of the wetland was carried out based on the methodology of Reed et al., 1995, which uses first-order equations as a function of a temperature dependent reaction constant. Finally got the dimensioning of a horizontal subsurface type artificial wetland based on the maximum pollutant load BOD5.