The article presents the results of experimental studies to study the effect of the hydrogen index of the medium on the iron-catalytic oxidation of hydrogen sulfide with air oxygen in a reactor with an ultrafiltration separator in the pH range from 6.0 to 10.0 at Fe(OH) catalyst doses3 – 100, 500 and 1000 mg/dm3. The results obtained make it possible to optimize the operation of one of the modern technological solutions in the field of preparation of ground hydrogen sulfide waters based on the method of iron-catalytic oxidation and ultrafiltration.

Keywords: hydrogen sulfide, iron-catalytic oxidation, air oxygen, iron hydroxide, membrane separation, ultrafiltration

The results of studies of wet gas purification in a countercurrent scrubber for the purification of hydrogen sulfide-containing combined-cycle waste from oil and gas industry enterprises, and wastewater treatment and transportation systems are presented. A technical and economic comparison of various technologies for the purification of hydrogen sulfide-containing gas mixtures is presented

Keywords: steam-gas waste, hydrogen sulfide, hydrogen sulfide-containing gas mixtures, gas purification, electrochemical oxidation, electrolysis

The article presents a modern technological solution in the field of preparation of hydrogen sulfide natural waters for domestic and drinking and technical purposes. The developed technology of iron-catalytic purification of natural hydrogen sulfide-containing waters in a reactor with an ultrafiltration separator is easy to operate, a small amount of peripheral equipment and a high speed of processes, and also has no by-products and is completely environmentally safe. The proposed technological parameters are experimentally obtained and confirmed using approved scientifically based methods of analysis, the use of metrologically certified instruments and equipment, a large amount of experimental data and their high convergence with calculated values. The presented solution can be recommended for use at water treatment facilities for the purposes of water supply to enterprises, small blue areas and individual households.

Keywords: purification of natural hydrogen sulfide waters, groundwater treatment technology, water treatment, hydrogen sulfide, catalytic iron oxidation, atmospheric oxygen, iron hydroxide, membrane separation, ultrafiltration, innovative technologies

The results of studies of the kinetics of the iron-catalytic oxidation of hydrogen sulfide by atmospheric oxygen in a reactor with a membrane separator are presented. The studies were carried out on a laboratory experimental complex. The dependences were obtained experimentally showing the effect of the catalyst dose - Fe (OH) 3¬, the pH of the medium, and the contact time of the water being purified with the reaction medium on the effect of water purification from hydrogen sulfide.

Keywords: hydrogen sulfide, iron catalytic oxidation, air oxygen, iron hydroxide, membrane separation, ultrafiltration

The research on purification of hydrogen sulfide-containing gas mixtures of volatile hydrocarbons is presented. The results of laboratory tests of the technology for the oxidation of air hydrogen sulfide with electrolytic sodium hypochlorite and the technology for removing hydrogen sulfide on an electrically conductive catalyst are presented. The experiments carried out show the economic feasibility of the presented technologies.

Keywords: gas media of oil refineries, hydrogen sulfide, gas cleaning, electrochemical oxidation, electrolysis, electrically conductive catalyst