Kinetic parameters determination that rule the BOD equation of water sewage

Analyzing the conventional methods to measure the pollutional potency of water sewage, Biochemical Demand of Oxygen (BOD) constitutes, up to now, the best used criteria in the pollutional control of effluents where the organic charge must be restricted to maintain levels of dissolved oxygen. This document presents the kinetic parameters that rule the equation of BOD in water sewage of soft drinks industry and dairy products industry of the Zulia Region, through the application of Thomas Pending Method, the Fujimoto Graphic Method and the Thomas Graphic Method, bearing in mind the region climate being a fundamental parameter having a great influence on such values. Obtaining the constant of biodegradation, k, and the ultimate demand, L: it’s observed that only the Thomas Pending Method and the Thomas Graphic Method are applicable for such type of water sewage, which means the Fujimoto Graphic Method did not throw real results for the executed analysis. It is very important to emphasize on organic matter concentration that each type of sewage has, since on this document a great difference on values of obtained kinetic constants is noted, bearing in mind that for the soft drinks industry the values of such constants are lower than for the dairy industry, and this is due to the fact that in the last mentioned industry the ideal environment for proliferation of micro organisms, which are greatly bio-degradable, is created, which means, organic matter in essence.