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Title: EFFECTIVE COAGULANT FOR WASTE WATER PURIFICATION FROM HYDROGEN SULFUR
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EFFECTIVE COAGULANT FOR WASTE WATER PURIFICATION FROM HYDROGEN SULFUR
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1314-2704
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English
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20
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1.3
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This report provides the findings of analysis intended to determine the reasons for the hydrogen sulfide formation in anaerobic conditions of urban sewage systems. The studies have shown that the technogenic content of sulphates in urban networks and the presence of organic components in wastewater lead to the formation and release of hydrogen sulfide into the atmosphere. Various methods of hydrogen sulfide removal from wastewater have been analyzed. The authors of the report have developed a complex alumina-ferrous coagulant to purify wastewater from hydrogen sulfide based on local raw materials of the natural ferruginous diatomite and alumina production middlings; they have also tested it on model wastewater and demonstrated its effectiveness.
The novelty of the work is in the determination of the coagulant mechanism of action due to the formation of activated ferric hydroxide forms that bind dissolved hydrogen sulfide, as well as aluminum hydroxide that promotes the formation of rapidly precipitating floccules in the presence of amorphous silicon diatomite. The principal difference of the proposed coagulant from analogs is the use of the ferrous variety of Kazakhstani natural diatomites as a source of the active iron hydroxide form. The extremely active forms of iron compounds formed in an aqueous solution readily interact with a hydrogen sulfide solution to form insoluble sulfides. The use of cakes (containing ferrite and sodium aluminate), alumina production middlings to reach medium alkalinity provides the accelerated course of reactions to form iron sulfides and their precipitation by coagulation with aluminum hydroxide forms. |
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conference
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20th International Multidisciplinary Scientific GeoConference SGEM 2020, SCIENCE AND TECHNOLOGIES IN GEOLOGY, OIL AND GAS EXPLORATION, WATER RESOURCES, FOREST ECOSYSTEMS
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20th International Multidisciplinary Scientific GeoConference SGEM 2020, 8-11 December, 2020
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Proceedings Paper
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STEF92 Technology
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SGEM International Multidisciplinary Scientific GeoConference
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SWS Scholarly Society; Acad Sci Czech Republ; Latvian Acad Sci; Polish Acad Sci; Russian Acad Sci; Serbian Acad Sci & Arts; Natl Acad Sci Ukraine; Natl Acad Sci Armenia; Sci Council Japan; European Acad Sci, Arts & Letters; Acad Fine Arts Zagreb Croatia; C
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113-120
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8-11 December, 2020
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website
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cdrom
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7621
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wastewater; hydrogen sulfide removal; alumina-ferruginous coagulant; ferruginous diatomite; alumina production middlings
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