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In recent years, there has been a growing demand for research on the use of alternative coagulants to chemical coagulants for the treatment of drinking water, aiming at improving the process, reducing the generation of sludge and the absence ENCICLOPÉDIA BIOSFERA, Centro Científico Conhecer Goiânia, v.15 n.27; p. 2018 18 of metals in the water. Therefore, the present work aimed to analyze the performance of natural coagulants, Moringa oleifera and Tanino (Tanfloc), comparing them to the chemical coagulant aluminum sulfate in water treatment. The raw water used in this research came from the Pirapó River basin, collected in the municipality of MaringáPR. The coagulation / flocculation and sedimentation experiments were performed in Jar Test. The parameters used in the characterization of the water were: turbidity, color and pH. The results showed the efficacy of the tannin when compared to the other treatments, and that between aluminum sulfate and Moringa oleifera there were no differences. However, aluminum sulphate has low market cost because it is produced on a large scale, but it is bioaccumulating and poses a health risk. Moringa oleifera is a natural, efficient coagulant and to be used in the treatment requires easy and practical processing, which makes it a viable solution for the sustainable treatment of water, especially in less developed regions.

ANÁLISE DA PERFORMANCE DOS COAGULANTES NATURAIS Moringa oleifera E TANINO COMO ALTERNATIVA AO SULFATO DE ALUMÍNIO PARA O TRATAMENTO DE ÁGUA