Análisis de la re-valorización de biosólidos de la PTAR, El Peral, Ambato, para insumos de mampostería

Abstract

The present work analyzed an alternative of re-valorization of residual sludge from the primary and secondary purification processes of the Wastewater Treatment Plant, El Peral, Ambato, using them as a substitute of the soil for the elaboration of bricks. It began with the sampling of the raw material, soil and residual sludge, for its characterization by physical and chemical parameters; In addition, the CRETIB characterization of the sludge. Then, we proceeded to the manufacture of 5 batches of bricks of mixture, with different percentages of sludge amendment, between 5% and 30%. These were tested in the laboratory to determine their quality according to the norm NTE-INEN 297. With the values obtained in the mechanical tests, it was determined that the bricks of 5% of amendment, fulfilled the parameters of minimum resistance to compression and bending, and maximum absorption of humidity, classifying as solid type C bricks. By interpolation, it is inferred that the bricks of mixture of 8.6%, complied with the parameter of minimum resistance to compression; however, these bricks can not be subject to bending loads. Finally, a possible use for the 30% mix bricks was analyzed.