On the need for engineering models of integrated chemical and biological oxidation of wastewaters

Experimental examples of sequential chemical and biological oxidation treat ment have been previously reviewed by Scott and Ollis, and economic estimat es proposed by Esplugas and Ollis. Despite the prevalence of examples evide nt in these reviews and in recent conferences, very little use of kinetic m odels to codify and rationalize results on complex or simulated wastewaters has appeared. In consequence, models are not widely available nor have the y yet received widespread acceptance as a method of analysis and reporting. To ameliorate this situation we here report a summary of important kinetic behaviors characteristic of individual chemical and biological kinetics, a nd provide experimental examples from recent works which illustrate the uti lity of such simple kinetic forms to construct two step treatment engineeri ng models for complex wastewater and waters.