Article
Article name Sorption Technology for the Treatment of Waste and Circulating Waters of Ash Dumps
Authors Shumilova L.. ,
Bibliographic description Razmakhnin K. K., Khatkova A. N., Shumilova L. V., Nomokonova T. S. Sorption technology for the treatment of waste and circulating waters of ash dumps // Transbaikal State University Journal. 2023. Vol. 29, no. 3. P. 35–44. DOI: 10.2109/2227-9245-2023-29-3-35-44.
Category Subsoil Use, Mining Sciences
DOI 622.7/ 502/504
DOI 10.2109/2227-9245-2023-29-3-35-44
Article type Original article
Annotation The purpose of the research is to assess the possibility of effective treatment of waste and recycled water from the ash dump by sorption methods. The objectives of the study include the following: development of a scheme of a sorption plant with the sequential introduction of zeolite for the treatment of waste and recycled water from hydraulic ash dumps; development of a scheme for a continuous sorption plant using a zeolite sorbent for the treatment of waste and recycled water from hydraulic ash dumps; determination of the efficiency of waste and recycled water treatment through the use of sorption methods based on the use of natural zeolites. The results of studies on the possibility of using natural zeolites of the Shivyrtuiskoye deposit for the treatment of waste and recycled water from the Chita CHP-1 hydraulic ash dump from polluting components that have a negative impact on the environment are presented. The subject of the research is the technologies and materials that ensure the treatment of waste and circulating waters of the hydraulic ash dump. It has been revealed that the use of natural zeolites of the Shivyrtuiskoye deposit for the treatment of waste and recycled water from the ash dump is reasonable and effective. At the same time, the degree of purification from arsenic was 93.3 %, from fluorine – 97 %, lead – 87 %, manganese ‒ 99.7 %. A scheme of a sorption plant with sequential introduction of zeolite has been developed. A scheme of a continuous sorption plant based on the use of natural zeolites as a sorbent has been developed. Experimental studies carried out in dynamic mode on the extraction of arsenic from waste and circulating waters of the hydraulic ash dump showed that natural zeolites have the necessary characteristics that allow the adsorbent to be used in industrial conditions for a long time while maintaining sufficiently high sorption capacities. It has been established that natural zeolites are an effective material for the purification of waste and recycled water from arsenic. The advantage of using zeolites in the processes of ion-exchange and sorption purification of waste and circulating water is the possibility of implementing ion-exchange and sorption processes in a dynamic mode, high sorption selectivity and ease of instrumentation.
Key words ash and slag waste, hydraulic ash dump, Chita CHPP-1, waste water, recycled water, pollutants, purification, sorption, natural zeolites, dynamic capacity
Article information
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