Diseño de una Planta de Tratamiento de Aguas Residuales para la parroquia Dayuma del cantón Francisco de Orellana.

Abstract

A Wastewater Treatment Plant was designed to Dayuma parish, Francisco de Orellana canton, Orellana province, in order to minimize the negative environmental impact caused by sewage. The characterization of wastes water was realized and a treatment plant was proposed using programs as AUTO CAD, ARC GIS and EXCEL. The flow measurement was carried out for six consecutive days, resulting an average flow of 1,6 L/s indicating there are no significant variations. The sample and laboratory analysis during the seven days of sampling used glass bottles amber 1L and sterile bottles provided by LABSU laboratory. The analysis indicated values of: total suspend solids 147mg/L, sedimentary solids 2,14 mg/L, oils and fats 1,77 mg/L, BOD5 101,43mg/L and fecal coliforms (9,61x106 col/100mL), these results are outside of permissible limit according to Unified Text of Secondary Legislation of Environment Ministry (TULSMA). The proposed design includes: pre treatment, primary and secondary treatment with flow wetlands sub superficial with german grassland, achieving average total 83,5 % efficiency and a required area of 0,08 hectares. The treatment plant designed is efficient to reduce the concentration contaminants from the wastewater discharge, compliance with maximum permissible limits established in Ecuadorian standard, minimizing environmental damage these waters represent. It is recommended the implementation of this Wastewater Treatment Plant in Dayuma parish.