The Biokinetic Parameters for the Removal of the Biochemical Demand of Oxygen and Coliforms in the Domestic Wastewater Treatment Plant of Pisco

Abstract

Abstract The objective of the research was to determine the biokinetic parameters that significantly influence the removal of the biochemical oxygen demand and coliforms in the domestic wastewater treatment plant. Material and methods, primary documentation was used, using the analytical-explanatory method, applied research. Results: The technical standard OS.090, for wastewater treatment plants establishes the maximum permissible limits and the average values of the oxidation lagoon were obtained, with a pH between 8-9, temperature 30.9 ° C, it was evidenced that the oxygen utilization rate values (VUO), for 5h (VUO = -0.1301), 15h (VUO = -0.1257), 35 h (VUO = -0.1187), 60h (VUO = -0.0958) and 80h (VUO = - 0.0885). Discussion: With the consumption of dissolved oxygen, the microbial ecological balance was reached on the third day in the reactor, which allowed obtaining the biokinetic parameters with a K = 0.0097 L/mg * d, Ks = 149.132 mg/l, qmax = 0.0698 h-1, a = 0.041 kgO2 / DBOr and b = 0.0365. Conclusion: The complete mixture of the removal of BOD5 is in a range of 85-95, the tests in the sample at 80 hours reached for the BOD5 of 27 mg/l.