PERFORMANCE EVALUATION OF A FULL CYCLE WATER TREATMENT PLANT LOCATED IN THE MUNICIPALITY OF MARINGÁ-PR

Abstract

The full cycle water treatment plants (WTP’s) perform the purification of natural waters through the stages of coagulation, flocculation, decantation, filtration, disinfection, fluoridation and pH correction. In order to guarantee the provision of good quality treated water, it is necessary to evaluate the performance of the treatment stages to ensure the efficiency of each one of them. With this in mind, the present paper aims to evaluate the performance of a WTP located in the interior of Paraná through indicators based on the quality of the raw, coagulated, decanted, filtered and treated water, on the construction and operational characteristics of the treatment units of the WTP and on the compliance with the technical standard NBR 12216/92, the legislations CONAMA Resolution No. 357/5 and Ordinance No. 888/21 and the considerations/recommendations made by the literature. Despite the quality of the raw water being compromised, it was found that the quality of the treated water is in accordance with the potability standard established by Ordinance No. 888/21. However, constructive and operational aspects of the WTP to be improved were identified. Due to this, the present paper shows subsidies that aim to improve the efficiency of the WTP and enable the sustainability of its water treatment system.