TECHNICAL VIABILITY EVALUATION OF THE APPLICABILITY OF DIRECT FILTRATION TECHNOLOGIES ON THE TREATMENT OF THE PONTA GROSSA/PR WTP AFFLUENT WATER

Abstract

Water Treatment Plants (WTP) which use direct filtration (DF) technologies must be adapted to the changes in the row water characteristics, because these have great influence on this technology efficiency. Pitangui River row water, of Ponta Grossa City, PR, Brazil, suffers with algae presence, leading to a decrease in the treated water flow-rate, faster filter obstruction, and decrease in the filter run time duration, causing prejudices to the DF process. To evaluate the technical viability of applying DF technologies in the treatment of the row water in its present conditions, it was realized bench scale treatability studies, using different coagulants, among them Fenton's Reagent, this research differential. Besides, it was studied the behaviour of DF technologies with temporal variations in which springs row water is exposed. For this, the studied water was collect in three distinct periods. Therefore, in this work it was evaluated Aluminium Sulfate; PAC (polyaluminium chloride), Ferric Chloride, and Fenton's Reagent coagulants efficiency. It was found that DF technologies have applicability in the treatment of the studied waters, mainly to the studied water characteristic of winter period.