Study of kinetic coefficients of percolation filters by phases, with a volcanic stone filter medium

Abstract

The study of kinetic coefficients of trickling filters in stages, filtration medium of volcanic stone, in the treatment of wastewater of Wastewater Treatment Plant of USAC, which responds to a good performance in the efficiency of removal of organic matter; but it is important to the study of the kinetic coefficients to determine design parameters for this type of units.

The characterization of residual water from domestic, as the biochemical oxygen demand (BOD₅) and the chemical oxygen demand (COD) are the main parameters to be evaluated. This study uses the equation of Eckenfelder, whose model considered the kinetic coefficients of: (n) and (K); and according to the methodology it is solved using COD and BOD₅ data in the laboratory by graphical method.

According to the results of the filters trickling manages to remove the 89.70% of organic matter, considering that the filter medium is stone maze of sizes 2 1/2 ", 3"and 3 1⁄2"respectively in each filter. The characteristic of organic and hydraulic load are low load, and the average temperature of 25°C. The kinesthetic certain coefficients are: n = 0.673; K = 0.0294 m^0.673*day^-0.673.