Journal of Environmental Treatment Techniques  
2021, Volume 9, Issue 1, Pages: 335-341  
J. Environ. Treat. Tech.  
ISSN: 2309-1185  
Journal web link: http://www.jett.dormaj.com  
https://doi.org/10.47277/JETT/9(1)341  
Development of an Electrolytic Pilot Plant for the  
Production of Chlorine Gas “In Situ” in the  
Disinfecting Water Process  
2
Ruben Guerra *, Marlene Ballestas , Alonso Barrera , Vladimir Pinzón , Henry Herrera  
1
1
2
1
1
Department of engineering, ITSA University, Soledad, Colombia  
2
Department of basic sciences, De la Costa University, Barranquilla, Colombia  
Received: 19/08/2020  
Accepted: 23/11/2020  
Published: 20/03/2021  
Abstract  
Technology of gaseous chlorine in water treatment has shifted to the dosage of sodium hypochlorite or calcium hypochlorite because of  
their greater biocide power; require less contact time with the microorganisms in the pretreated water, and the pH of slightly affect water.  
The generation of chlorine gas in place is based on the principles of electrolytic dissociation and laws of electrolysis by Faraday. The  
equipment corresponds to an electrolytic cell of three (3) compartments , a central one (anode) where chlorine gas emerges , and two side  
(
cathodes) where sodium hydroxide is produced in the central compartment must be refilled chloride solution sodium consumed due to the  
electrochemical reaction , the chlorine evolved being of gaseous nature ascends the column of sodium chloride and is captured by the vacuum  
venture system , who to put in direct contact with target that has been previously subjected to the processes of uptake , coagulation ,  
sedimentation and filtration. Compartments anode-cathode - anode are physically separated by porous diaphragm, whose purpose is to permit  
selective flow of sodium and chloride ions , avoiding side reactions recombination , as additional product is the formation of sodium  
hydroxide in the cathode chambers, which should be removed from the cell through side pipes. Statistical models were used to optimize the  
performance and operation of the prototype.  
Keywords: Saline electrolysis; chlorine gas; electrolytic reactor  
1
built (1), which is loaded with concentrated brine (6) to which  
1
A Headings are the primary heading type  
electric current supplied by a DC power rectifier source is applied  
3), the mixture of gases generated in the anode are extracted by  
One of the most common diseases among the population of  
Latin America are related to lack of water and contaminated water  
1]; taking millions of lifes per year [2]. In most large cities in the  
(
the suction created by the Venturi system (2), the pump (5)  
circulates a working volume (4) of 200 lt at a flow rate of 15,3  
Lt/min (9,18 mt3/h) , passing through the Venturi and the shunt  
[
country with more than 10000 inhabitants, chlorination has been  
made reasonably reliable using gaseous chlorine dosing  
technology supplied in cylinders, however, chlorination of  
potable water supply systems that serve smaller populations  
usually remains unreliable and intermittent [3]. To help solving  
this problem, many technological alternatives applicable to  
disinfection have been investigated [4 and 5]. These include  
various technologies suitable for ozonation [6], iodine [7],  
ultraviolet radiation [8], as well as the use of various methods for  
performing gas chlorination, chloramines, chlorine dioxide and  
methods for generating disinfectants in situ [9 and 10]. The latter  
method being the one that has proven to be the most promising of  
all the technologies used [10].  
(
7). As seen in the Fig. 1 and Fig. 2.  
2.2 CAD design and construction of an electrolyte cell with a  
capacity of 15 A  
The reactor design used in the tests consists of an electrolyte  
cell loaded with 20 liters of brine at concentrations of 45 and 68  
gr NaCl/lt respectively, which produces oxidizing gases (chlorine  
and oxygen species) in the anode compartment, and sodium  
hydroxide and hydrogen in the cathode compartment, which is  
shown in the fig. 4. These two compartments are separated by a  
semipermeable polysulfonated membrane usually made of Nafion  
@
, General purpose material in the manufacture of car batteries,  
the prototype body was made of 5mm thick transparent acrylic  
sheets resistant to the action of chlorine, ozone and NaOH. The  
cathode of the unit is made of stainless steel and a matrix of 22  
cylindrical graphite electrodes 10mm in diameter by 300mm of  
length.  
2
Plant Development  
2
.1 CAD design and construction electrolytic pilot plant for gas  
chlorine production  
For the purpose of evaluating the performance of chlorine-  
generating equipment in situ an electrolytic cell was designed and  
*
Corresponding author: Ruben Guerra, Department of engineering, ITSA University, Soledad, Colombia.  
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