Projecto de um sistema automático para drenagem de águas residuais para emissário da higest moçambique, Machava- Maputo Província.

Abstract

The Higest Mocambique, Lda is a national company dedicated to the production of feed, raising and rearing of chickens, located in the neighborhood of Bunhica, municipal post of Machava, in the province of Maputo, specifically at Av. Josina Machel, km 15.Due to the constant problem related to the management of wastewater and Rainwater that has occured at the site, especially in one of its production units, the slaughterhouse, the company has chosen to start bulding a wasterwater treatment plant ( WWTP) and na outfall for their disposal.Not having a Project to automate nthe existing outfall at the time, the presente work presentes in its development a proposal for nan automatic system for draining wasterwater for the outfall of the Higest Mocambique. The system and its control logic are based on the use o fone of the most sophisticated and affordable controllers on the market, the S7- 1200 form Siemen. Based on the computational tool for programmng this, the Tia Portal, the Operating logic for the automaton was developed and conect to this a CP 1243-7 module, which aims to allow the sending of SMSM to maintenance cell phone inevents of a failure in the exixting system in the emissary. This module allows that a quick response is achieved When aa fault occurs in the outfall, and avoids the need for full-time monitoring of HMI, as the outfaull is located in na área far from the production centres, An HMI i salso proposed, which was developed with a view to allowing users to have acess to the mais data on the state of the outfall, among them, the state of the eletric pumps that drain water to the outfall, of the emissary eletropumps, its Operating mode ( Manual or automatic ) and the amount of water drained from the emissary to the final discharge point.