The use of chemical scrubbers to eliminate odors
at the wastewater treatment facilities

Summary

The potential and features of using chemical scrubbers to remove from the air hydrogen sulfide and other malodorous substances generated during the transportation and treatment of wastewater are considered. A comparative analysis of the characteristics of various types of scrubbers: alkaline, hypochlorite, peroxide, and based on iron compounds is presented. It has been shown that the use of chemical scrubbers to eliminate malodorous substances at the wastewater treatment facilities has a number of significant limitations. The use of chemical scrubbers is advisable at the primary stage of air cleaning. Relatively low concentrations of hydrogen sulfide in the ventilation emissions of the wastewater treatment facilities at the relatively high concentrations of carbon dioxide result in an increase in the consumption of chemicals for second-order chemical reactions. In this case, significant operating and capital costs in the climatic conditions of Russia, except the southern regions, the operation complexity of the equipment, and the need for additional air cleaning using other methods should take into account.

Key words

wastewater , absorption , industrial methods of removing malodorous substances , hydrogen sulfide removal , chemical scrubbers , odor control