USE OF BARIUM FERRATES FOR WASTEWATER PURIFICATION OF DAIRY FACTORIES, HOUSEHOLD SERVICES, HYDROBIANT FARMING INSTALLATIONS
Abstract and keywords
Abstract:
Barium ferrate is a highly effective and technologically complex reagent for the treatment of complex industrial wastewater. It is a chemical compound in which iron is in its maximum oxidation state of +6, which makes it a very strong oxidizing agent. Barium ferrate is more stable than alkali metal ferrates, making it a more promising reagent for wastewater treatment. The article analyzes the shortcomings of modern approaches to wastewater treatment and substantiates the high relevance of developing new technologies that would allow combining the strengths of various wastewater treatment methods based on the AOPs technology approach, which is based on producing a very powerful oxidant in the solution, such as the hydroxyl radical (•OH), which can destroy organic matter up to its mineralization. This study is devoted to the development of a method for using barium ferrate as a reagent for the treatment of real wastewater from a hydrobiont cultivation facility, a household service organization, and a dairy plant (after washing the process equipment and the MBR reactor). A method for the synthesis of barium ferrate has been substantiated and developed. The key step in the synthesis of barium ferrate is the oxidation of iron (III) hydroxide with bromine in an alkaline environment, followed by precipitation with barium chloride solution to form barium ferrate. The results of wastewater treatment using the synthesized product demonstrated a high reduction in the indicator «Chemical oxygen consumption» - about 80%; good biocidal properties of barium ferrate were recorded after it treated wastewater from a dairy membrane bioreactor. It is proposed to focus further research on the development of a technological scheme for the production of barium ferrate with maximum localization.

Keywords:
BARIUM FERRATE, AOPS, WASTEWATER, CHEMICAL OXYGEN CONSUMPTION, OXIDATION, BIOCIDAL EFFECT
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