Ecological Systems and Devices Annotation << Back Modeling and Calculation of an Electrochemical Reactor for Cleaning Ventilation Emissions from Hydrogen Sulfide Golovanchikov A.B., Prokhorenko N.A., Churikova V.I. The electrochemical process of sulfur recovery from hydrogen sulfide formed in ventilation emissions of municipal wastewater is considered. Based on experimental data, it is shown that at low concentrations of hydrogen sulfide, the kinetics corresponds to a zero-order reaction. A diagram of an industrial electrochemical reactor and calculations of its main process and geometric parameters for a typical ideal displacement mode and flow structure modeled by six ideal mixing cells are presented, taking into account the experimentally obtained differential response curve for a dispersion equal to 0.159. It is shown that when segregation of reaction gases is equal to unity, to achieve a given degree of conversion, it is necessary to increase the average residence time, and therefore the volume and height of the reactor compared to the ideal displacement mode by 1.656 times. Keywords: hydrogen sulfide, sulfur, municipal wastewater, electrochemical reaction, reaction order, rate constant, plug flow, flow structure, mixing or segregation level, dispersion, cell model. DOI: 10.25791/esip.4.2026.1586 Pp. 22-29.