RESOURCE-SAVING CIRCULATION SYSTEM OF WATER SANCTIONS PRODUCTIONS OF PROTECTIVE COATINGS AND PRINTED BOARDS ON EXAMPLE OJSC "BEMZ"
DOI:
https://doi.org/10.36773/1818-1212-2021-125-2-54-57Keywords:
pH, heavy and non-ferrous metal ions, chemical reactor, filters, electrodialysis, reagents, process pipelines, electrolytes, sediment, ceramicsAbstract
Improvement of the production facilities that generate wastewater in the production of protective coatings (PZP) and the production of printed circuit boards (PCB) of OJSC «BEMZ» has made it possible to significantly reduce the need for fresh water for technological needs and the removal of toxic chemicals into wastewater. The results of experimental studies, confirmed by production tests, made it possible to develop and implement a resource-saving circulating water system at OJSC «BEMZ». This system makes it possible to economically use the returned purified waste water, depending on its quality, in separate streams, both for the own needs of treatment facilities and for the main production, in addition, a method has been developed for the disposal of sludge in the manufacture of wall ceramics.
The rational formation of wastewater flows at the places of their formation allows the use of waste technological solutions (WTS) that are not utilized in the main production as purchased reagents for carrying out wastewater treatment processes.
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