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0223U003780,
0122U201793
,
Scientific and technological substantiation of waste-free technologies for the processing of liquid and solid waste with the production products of industrial importance
Ivanchenko Anna V., Доктор технічних наук
30-06-2023
Ivanchenko Anna V.
The regularities of dephosphatization of municipal liquid waste by means of reagent-adsorption treatment have been established. The dependences of biochemical destruction of waste with the production of biomineral fertilizers, methane and soda ash were obtained. New types of fertilizers from secondary raw materials were obtained, the chemical composition of which corresponds to DSTU 7369-2013. The dependences of the process of obtaining rare earth elements from phosphogypsum by sulfuric and nitric acid treatment have been revealed. Regression equations were obtained that allow predicting the degree of extraction of rare earth elements from phosphogypsum. A complex liquid mineral fertilizer based on phosphogypsum and ammonium nitrate with the content of nutrients N:Ca:S = 24:8:12 was obtained. Chemically activated sorbents based on zeolite and walnut shell were created. The regularities of sorption removal of pollutants from wastewater of coke chemical production and heavy metals were established and adsorber designs were proposed. Optimum technological parameters of sorption of Fe(III) and Zn metals on lignocellulosic sorbent were revealed. Sediments after adsorptive processing of liquid waste from coke-chemical production were tested as an additive to asphalt concrete mixture and physical and mechanical parameters were established that meet the requirements of DSTU BV 27-119:2011 and as fillers for bituminous-mineral compositions in combination with phosphogypsum. Technological schemes for the processing of liquid and solid waste with the production of products of industrial importance have been developed, which make it possible to obtain new types of bio- and mineral fertilizers with trace elements, methane, soda ash, concentrate of rare earth elements, additives to asphalt concrete mixtures and fillers of bituminous compositions, and to neutralize liquid waste of coke-chemical production and industrial effluents contaminated with heavy metals.
2023-06-30
Updated: 2025-12-08
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