DEVELOPMENT OF INDUSTRIAL PROCESS OF SAFE WATER DISINFECTION WITH NON-OXIDIZING BIOCIDE
DOI:
https://doi.org/10.20535/2218-93001332013138201Keywords:
disinfection of the water, biocide, PHMG, weak acid cation-exchange resin, sorption, regeneration, total microbial count (TMC)Abstract
The conditions of the technological implementation of the process of water disinfection using polyhexamethyleneguanidine (PHMG) followed by removal of reagent excess by macroporous weak acid cation-exchange resin (CER) were studied. The principal possibility of PHMG removal with different forms (H+, Na+) of CER to the value of the residual concentration of the reagent 0.1 mg/L in multicycle process was shown. It was demonstrated that the proposed technology provides an effective biocide removal from the water and does not lead to its secondary microbial contamination. It was ascertained that PHMG recovered during regeneration maintains its biocidal properties and can be used for disinfection of water in a closed circuit process. The basic technological schemes of the process of PHMG removal were developed: single-stage scheme with one-time use of CER and a closed-cycle scheme with absorption-regeneration mode and PHMG reuse. According to data obtained during mathematical modeling and engineering-and-economical calculations optimal conditions for the process of PHMG removal were formulated. The choice of ionic form of CER and technological schemes of the process according to the object of disinfection was establish.Downloads
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2013-11-01
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Copyright (c) 2020 М. О. Сусь, Т. Є. Мітченко, Н. В. Макарова
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