System for Centralised Collection, Recycling and Removal of Waste Pickling and Galvanic Solutions and Sludge

Меренцов, Н. А.; Bokhan, S A; Lebedev, V. N.; Persidskiy, A. V.; Балашов, В. А.

doi:10.4028/www.scientific.net/msf.927.183

Cited by 22 publications

(8 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It was established that the best results among those mentioned above were demonstrated by samples from the G7 series of experiments -the amplitude of magnetic induction is 0.298 Tl and the pulse frequency is from 0.5 to 10 Hz, as evidenced by the data from Table 3. The water purified after the ferritization processing of galvanic waste can be used in a circulating water supply system [18].…”

Section: Discussion Of Results From Studying the Processing Of Galvanmentioning

confidence: 99%

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process

Kochetov

Prikhna

Samchenko

et al. 2019

EEJET

View full text Add to dashboard Cite

Section: Discussion Of Results From Studying the Processing Of Galvanmentioning

confidence: 99%

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process

Kochetov

Prikhna

Samchenko

et al. 2019

EEJET

View full text Add to dashboard Cite

“…The most common method of wastewater treatment is chemical or reagent [9]. In practice, wastewater from etching operations is subject to treatment with an alkaline reagent for the purpose of neutralization.…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining rational parameters for the treatment of concentrated wastewater from etching site by using combined systems producing sediments of predefined composition

Yatskov,

Korchyk,

Budenkova

et al. 2024

EEJET

View full text Add to dashboard Cite

The object of this study is model solutions, spent sulfuric acid and chloride acid etching solutions, degreasing of metal products at enterprises. The paper reports results of research on the possibility of obtaining sediments of predefined composition and reducing the consumption of chemical reagents in comparison with conventional cleaning schemes. The systematization of the elements of the technological scheme has been shown, which provides for the treatment of concentrated wastewater of the etching area in combined systems with obtaining sediments of predefined composition and is the basis for the implementation of resource-saving technology. Rational parameters were established for the state (рН=3‒4, Eh=+0.3‒+0.33 V, and rH2=16.3–19.38 V) and technological parameters (degree of iron extraction ψ=0.8, reagent consumption from the stoichiometric norm of B=0.8). Such parameters provide the proper conditions for the oxidation of organic compounds and their co-precipitation with insoluble iron hydroxy compounds (the maximum degree of extraction of organic impurities is 86 %). The formed precipitate corresponds to the FeOOH.nH2O composition, contains 2‒3 % of organic impurities, and is subject to burial. As a result of studies on the treatment of concentrated iron-containing wastewater, the obtained sediment is ready for further utilization by processing. The composition of this sediment corresponds to the natural mineral limonite FeOOH (Fe2O3.nH2O) and is formed at pH values from 3.5 to 7.5 with rH2 values from 26 V to 21 V and at technological regeneration parameters of pH=4.0–4.6; rH2 =23.34–32.25 V. As a result of research into the deep purification of wastewater using a magnetic device, a suspension of sediment of ferromagnetic impurities (hydroxo compounds of iron) is obtained, which could be the basis for extraction or production of magnetically favorable dispersed material.

show abstract

“…Among the numerous methods of processing etching solutions, the most common is the reagent method [14]. Iron ions are deposited in the form of low-soluble sediment when adding NaOH, Na 2 CO 3 , or cheaper Са(ОН) 2 .…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

“…More promising is the method of processing etching solutions with the production of oxide compounds of ironmagnetite Fe 3 O 4 , hematite α -Fe 2 O 3 , maghemite ɣ -Fe 2 O 3 . These oxide compounds have a crystalline structure and are quickly sedimented during processing, and their volume and humidity are much lower than that of ferrum hydrox-ides [14]. One of the promising methods of such processing of etching solutions is the method of hydro-phase ferritization [15].…”

Section: Literature Review and Problem Statementmentioning

confidence: 99%

Determining the rational parameters for processing spent etching solutions by ferritization using alternating magnetic fields

Kochetov

Samchenko

Lastivka

et al. 2022

EEJET

View full text Add to dashboard Cite

This paper reports the results of studying the application of a ferritization method for the integrated purification of used etching solutions. A feature of this work is the use of energy-saving activation of the process by alternating magnetic fields. Its advantages are shown in comparison with traditional thermal activation. The influence of magnetic induction amplitude and key technological parameters of ferritization on the quality of cleaning an etching solution has been studied. The qualitative and quantitative composition of sediments obtained after the ferritization of etching solutions was investigated. Used etching solutions are large-tonnage waste of industrial enterprises. They contain harmful pollutants that have a detrimental effect on the environment. It is promising to treat these solutions in order to obtain valuable commodity products. It is established that with an optimal value of magnetic induction amplitude of 0.1 Tl, the degree of extraction of iron ions from the solution reaches a value of 99.99 %. The best values for the main technological parameters of the process have been determined: the concentration of iron ions in the reaction mixture is 6.6 g/dm3; pH, 11.5; the duration of ferritization is 15 min. The residual concentration of iron ions in purified solutions does not exceed 0.3 mg/dm3. Thus, according to the norms of current standards, they can be reused in production. Comparative analysis indicates the advantages of electromagnetic activation of the reaction mixture. The phases of magnetite Fe3O4 and iron monohydrate δ ‒ FeOОН were detected by the method of X-ray phase analysis in ferritization sediments. It is established that with an amplitude of 0.1 Tl, the sediment contains only magnetite. The study's results indicate the possibility of further use of sediments for the manufacture of important ferromagnetic substances. The application of the improved ferritization process in production will achieve less energy consumption compared to well-known processing technologies

show abstract

System for Centralised Collection, Recycling and Removal of Waste Pickling and Galvanic Solutions and Sludge

Abstract: The article presents an approach to centralised collection, recycling and removal of waste pickling and galvanic solutions and sludge designed for small steel making plants and workshops having the described processes and using flow-through filter blocks.

Cited by 22 publications

References 17 publications

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process

Determining rational parameters for the treatment of concentrated wastewater from etching site by using combined systems producing sediments of predefined composition

Determining the rational parameters for processing spent etching solutions by ferritization using alternating magnetic fields

Contact Info

Product

Resources

About

System for Centralised Collection, Recycling and Removal of Waste Pickling and Galvanic Solutions and Sludge

Abstract: The article presents an approach to centralised collection, recycling and removal of waste pickling and galvanic solutions and sludge designed for small steel making plants and workshops having the described processes and using flow-through filter blocks.

Cited by 22 publications

References 17 publications

Development of ferritization processing of galvanic waste involving the energy­saving electromagnetic pulse activation of the process

Development of ferritization processing of galvanic waste involving the energy­saving electromagnetic pulse activation of the process

Determining rational parameters for the treatment of concentrated wastewater from etching site by using combined systems producing sediments of predefined composition

Determining the rational parameters for processing spent etching solutions by ferritization using alternating magnetic fields

Contact Info

Product

Resources

About

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process

Development of ferritization processing of galvanic waste involving the energysaving electromagnetic pulse activation of the process