Fossa séptica biodigestora associada a círculo de bananeira como proposta de tratamento de esgoto rural

Abstract

In Brazil, only 60,2% of the population has service by sewage networks. In relation to the treatment network, less than 30% of the rural population is served. Given the importance of sewage treatment systems in rural areas, the present undergraduate thesis aims to propose a sewage treatment system composed of biodigester septic tank, EMBRAPA model, associated with the banana circle, in a rural lot located near the Dourados river, in addition to comparing costs with the traditional system and determine the volume of sewage effluents that the system will avoid throwing in natura into the Dourados River.The system design was designed according to NBR 7229 of 1993, EMBRAPAS's construction manual and EMATER's technical booklet. The proposed system for sewage treatment shows a reduction of 13.77% in cost when compared to the traditional system and avoids the release of 52500 liters of fresh sewage into the Dourados River.