Automatic devices for electrochemical water treatment with cooling of electrolyte
The most common disinfectants for water treatment are based on chlorine and its compounds. Practically, water treatments with chlorine compounds have no alternative, since they provide, in comparison to other effective processes such as ozonization or ultraviolet irradiation, high residual...
Main Authors: | , , , , |
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Format: | Article |
Language: | English |
Published: |
Association of Chemical Engineers of Serbia
2016-01-01
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Series: | Hemijska Industrija |
Subjects: | |
Online Access: | http://www.doiserbia.nb.rs/img/doi/0367-598X/2016/0367-598X1500026T.pdf |
Summary: | The most common disinfectants for water treatment are based on chlorine and
its compounds. Practically, water treatments with chlorine compounds have no
alternative, since they provide, in comparison to other effective processes
such as ozonization or ultraviolet irradiation, high residual disinfection
capacity. Unfortunately, all of chlorine-based compounds for disinfection
tend to degrade during storage, thus reducing the concentration of active
chlorine. Apart from degradation, additional problems are transportation,
storage and handling of such hazardous compounds. Nowadays, a lot of
attention is paid to the development of electrochemical devices for in situ
production of chlorine dioxide or sodium hypochlorite as efficient
disinfectants for water treatment. The most important part of such a device
is the electrochemical reactor. Electrochemical reactor uses external source
of direct current in order to produce disinfectants in electrochemical
reactions occurring at the electrodes. Construction of an electrochemical
device for water treatment is based on evaluation of optimal conditions for
electrochemical reactions during continues production of disinfectants. The
aim of this study was to develop a low-cost electrochemical device for the
production of disinfectant, active chlorine, at the place of its usage, based
on newly developed technical solutions and newest commercial components. The
projected electrochemical device was constructed and mounted, and its
operation was investigated. Investigations involved both functionality of
individual components and device in general. The major goal of these
investigations was to achieve maximal efficiency in extreme condition of
elevated room temperature and humidity with a novel device construction
involving coaxial heat exchanger at the solution inlet. Room operation of the
proposed device was investigated when relative humidity was set to 90% and
the ambient temperature of 38°C. The obtained results in such extreme
operation conditions reveled that it was possible to obtain required
concentration of 0.85% of active chlorine with maximal temperature of outlet
electrolyte of 35.3°C, which is within the limits of optimal temperatures.
[Projekat Ministarstva nauke Republike Srbije, br. 172046] |
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ISSN: | 0367-598X 2217-7426 |