The theory and design of aerobic biological treatment.
The processing of numerous experimental data shows that the high-level and rough treatments of multicomponent sewage water follow different laws. In the case of rough treatment, the classical Monod's model is fairly adequate to the experiment. High concentrations of a pollutant "saturate" the complex of microorganisms (activated sludge or biofilm) and the general oxidation process follows a zero order for the substrate. In the case of high-level treatment, the model of an n order (n > 1) for the substrate is adequate to the experiment. Generalized models of aerobic treatment, independent of the reactor type (an aeration tank, trickling filter, rotating disk), are proposed.
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Water Problems Institute, USSR Academy of Sciences, 13/3 Sadovaya-chernogryazskaya Street, 103064 Moscow, USSR.