UDC 628.316.12

Tcherkesov A. Yu.

Iron-catalytic technology for the purification of strong hydrogen
sulfide-containing wastewater from petroleum organic synthesis plants

Summary

Recommendations for the selection of a process flow scheme for the removal of sulfides by the method of iron-catalytic oxidation were developed and theoretically substantiated. The optimal conditions for running the process and utilization of sulfur extracted from wastes in the form of a commercial product were established. The proposed solutions are a new practical direction for improving the methods for removing hydrogen sulfide from concentrated solutions (total H₂S is more than 50 mg/dm³). Recommendations for the selection of the optimal parameters of the process and technological schemes of desulfidation by the method of iron-catalytic oxidation were composed. A new no-waste technology for the removal of sulfides from industrial wastewater and solutions by the method of iron catalytic oxidation with the regeneration of the recycling iron hydroxide in the technology of purification with air oxygen and the utilization of sulfur extracted from the wastewater in the form of a commercial product is proposed. Advanced and environmentally friendly process flow schemes for the removal of sulfides field-tested and introduced into the investment project are proposed. Their practical implementation in industrial wastewater treatment will provide for eliminating environmental pollution with H₂S and SO₂ emissions and obtaining the effluent that meets both the conditions of reuse in oil-and-gas synthesis technology and regulatory requirements for the industrial effluent discharge into the municipal sewer at minimal expense.

Keywords

sulfide-alkaline wastewater , sulfides , hydrogen sulfide , iron-catalytic oxidation of sulfides

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