Design and implementation of a Scada type system to improve the overall equipment efficiency of a WWTP

Abstract

The present research work consisted in the development and implementation of a computer system for remote monitoring and data acquisition on the operation of a WWTP owned by the company CLARVI, located in Los Mochis, Sinaloa, Mexico, in order to properly take advantage of the industry 4.0 technology previously installed, whose information could only be viewed on the site, whose registration was kept manually and of which no type of analysis was carried out. The purpose of this was the creation of a SCADA type tool that would help in decision making, which were based on quantifiable information to improve the overall equipment efficiency (OEE) of the plant's bioreactor. During a period of five months, four water quality variables were monitored, the WWTP shutdown times, the water input flows to the supply network and the water output after treatment, through the use of PLCs and specialized sensors. With the information obtained, the percentage of OEE was calculated on a monthly basis, as the system was implemented, and after carrying out activities based on the analysis of the data, the impact was observed. Finally, a very strong degree of correlation was determined between the OEE and the degree of system implementation. In this research, very positive results were obtained with the use of this new tool, both qualitative and quantitative, but, without a doubt, it stands out to have exceeded the 80% OEE proposed in the hypothesis until reaching 93.56%, starting from an initial 12.94%.