TREATMENT OF EFFLUENTS OF THE FOOD INDUSTRY BY COAGULATION-FLOCCULATION USING STARCH OF SOLANUM TUBEROSUM L. ‘POTATO’ AS AN ALTERNATIVE TO CONVENTIONAL HANDLING
DOI:
https://doi.org/10.31381/biotempo.v15i1.1699Abstract
Treatment of industrial wastewater was evaluated through coagulation-fl oculation using starch of Solanum tuberosum L.
‘potato’ as an alternative to the conventional management. Assays were performed in a laboratory scale by performing Jar
Test with two coagulants: aluminum sulfate and aluminum polychloride, and two fl occulants: anionic polyacrylamide
and gelatinized starch, making variations in dose, concentration and speed. To determine the ideal parameters, the
following response variables were used: Willcomb index, absorbance, turbidity and chemical oxygen demand. Th e best
treatment was when using aluminum polychloride as coagulant and anionic polyacrylamide as fl occulant, reaching a
reduction percentage of 83.05% in chemical oxygen demand. Even then, the results suggest that anionic polyacrylamide
can be replaced by starch of S. tuberosum when applying a primary treatment to industrial wastewater from a food
company located in the district of Ate in Lima, Peru to meet the admissible values set in the Supreme Decree No.
021-009-VIVIENDA, with respect to organic matter present in wasterwater.