Abstract
The object of research is liquid and solid wastes resulting from the processing of highly concentrated wastewater from industrial enterprises using the ferritization method. It is known that galvanic production creates large volumes of highly toxic waste requiring further processing or safe disposal. One of the most problematic places is the use of traditional reagent methods that do not provide high rates of treated water and chemical stability of a significant amount of solid-phase waste water. The use of ferritization technology allows eliminating the indicated disadvantages and increasing the efficiency of the industrial wastewater treatment process. In the course of the study, improved ferritization method with electromagnetic activation of the process is used, which can significantly increase its energy efficiency. However, dense and stable ferritization sediments that contain toxic compounds of heavy metals need reliable disposal. But even with proper treatment of wastewater from heavy metal compounds, they contain a large amount of other pollutants, making it impossible to discharge such water into natural water bodies, in particular, because of its increased alkalinity. Environmentally safe use of such substandard products in solid and liquid state as components of building materials is developed. The most effective cementing materials with reliable immobilization of industrial waste compounds are alkaline binders. The performance properties of such modified alkaline cements and concretes based on them are obtained. The leaching of heavy metal ions from the matrix of the material is investigated and their reliable fixation in the structure of alkaline cements is proved. Due to this, immobilization of water treatment products in alkaline cements and concretes based on them does not degrade the performance of their properties and at the same time provides the advantages of such waste disposal. Compared with similar known technologies, a completely waste-free complex treatment of industrial wastes of electroplating plants of industrial enterprises is developed.
Highlights
The wastewater of electroplating industry today is one of the most harmful products of man-made origin
The results of the literature analysis suggest that the use of a matrix of alkaline cements will ensure reliable fixation of heavy metal ions contained in wastewater treatment products
Analysis of the results shows that the introduction of alkaline cements products of industrial wastewater treatment does not significantly impair the operational properties of the material
Summary
The wastewater of electroplating industry today is one of the most harmful products of man-made origin. The intensive development of modern industry, in particular, electronics in the world and Ukraine, requires the use of effective technologies for the treatment of such waters in order to preserve the environment. In order to avoid such problems, it is necessary to apply an integrated approach to the recycling of electroplating waste, by water treatment, and by deeper processing of the obtained products.
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