Design of a Device to Eliminate Isocyanuric Acid from Water

2015 ◽  
Vol 799-800 ◽  
pp. 952-956
Author(s):  
Marina Corral Bobadilla ◽  
Eliseo P. Vergara Gonzalez ◽  
Ruben Lostado Lorza ◽  
Fatima Somovilla Gomez ◽  
Roberto Fernández Martínez
Keyword(s):  
Human Health ◽  
Renewal Process ◽  
Swimming Pool ◽  
Pool Water ◽  
Insoluble Complex ◽  
Isocyanuric Acid ◽  
Swimming Pool Water ◽  
Over Time

This paper shows the design of a device for partial eliminating of isocyanuric acid (ICN) from swimming pool water using melamine additives. The renewal process of swimming pool water through its own purification makes absolutely necessary the elimination of isocyanuric acid that has been accumulated in the water over time. An excess of isocyanuric acid in water will then prevent chlorine effectiveness in the pool water and as a result, becomes harmful to human health. Therefore, the disinfection stage is considered as well as Isocyanuric acid (ICN) stabilization and as doing this is achieved through melamine-photometry filtering of insoluble complex ICN-M. The overall objective of these stages of purification is to eventually eliminate ICN from swimming pool. The overall objective of this device is to eventually eliminate ICN from swimming pool and then make it safe for human uses, a case that has been considered viable technologically and economically in the system treatment.

scholarly journals Effecting Partial Elimination of Isocyanuric Acid from Swimming Pool Water Systems

Water ◽  
2019 ◽  
Vol 11 (4) ◽  
pp. 712
Author(s):  
Marina Corral Bobadilla ◽  
Eliseo Vergara González ◽  
Rubén Lostado Lorza ◽  
Fátima Somovilla Gómez
Keyword(s):  
Acid Concentration ◽  
Water Systems ◽  
Swimming Pool ◽  
Swimming Pools ◽  
Raw Water ◽  
The European Union ◽  
Water Network ◽  
Pool Water ◽  
Isocyanuric Acid ◽  
Swimming Pool Water

It is essential to disinfect the water in swimming pools in order to deactivate pathogenic microorganisms. Chlorination of swimming pool water provides rapid and long-lasting disinfection, but leads to the formation of potentially toxic compounds, including isocyanuric acid, that are used to stabilize chlorine in pool water. Hygiene and health guidelines require an isocyanuric acid concentration in swimming pools of 25 to 75 ppm and that there be no level in excess of 100 ppm. This paper provides a new method to partially remove isocyanuric acid from the water of swimming pool systems with the use of melamine-based reagents. A melamine-photometry process stabilizes the isocyanuric acid. The melamine-based reagent that is added to the raw water reacts with the isocyanuric acid and forms a precipitated salt. The reaction also creates turbidity that is proportional to the isocyanuric acid concentration in the water. It was noted in this study that the optimum functioning range of melamine doses in the raw water was 0.04 to 0.06 g/L and that the reduction of isocyanuric acid in raw water increased as the dose of melamine was increased. Thus, it is necessary to obtain an estimate of the dose of melamine that is necessary to reduce the isocyanuric acid in the water without needing to add fresh water from the network to dilute it. Finally, it can be stated that eliminating isocyanuric acid that has accumulated in a pool’s water by treatment with melamine provides an efficient process, as it eliminates the amount of isocyanuric acid that is necessary to conform to the human health criteria of the European Union Directive 2006/7/EC. Treatment with melamine also reduces water network consumption and sewer discharge by successive purges that eventually will become unnecessary. Therefore, this proposed method is environmentally and economically beneficial.

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