Design of Colloidal Silver Disinfection for a Public Swimming Pool with Solar Heating

Dang, Tony
Lam, David
Reid, Scott
Wang, Eric
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This paper describes the design of a half-Olympic sized outdoor swimming pool which uses a treatment method other than traditional chemical-based disinfection to maintain quality while also implementing a renewable energy system for pool heating. From extended research on various water treatment alternatives, colloidal silver (CS) disinfection is an effective treatment process at a concentration of 20 ppb and capable of eliminating common pathogenic microorganisms found in pool water. A safety factor of two was used providing a concentration of 40 ppb. Mathematical modeling was performed on the CS generation system and from this it was determined a weekly CS dosage of 12 ppb was required to maintain the desired concentration. Moreover to the pool design, unglazed solar thermal collectors were chosen to heat the pool. From temperature modeling, it was found that the solar collectors were adequately sized to maintain the temperature of the pool with an operating range of 25-28�C. The two components satisfied the design objectives as viable options for the pool system.

Created in fulfillment of the course requirements for ENGG*3100 Engineering and Design III. This course combines the knowledge gained in the advanced engineering and basic science courses with the design skills taught in ENGG*1100 and ENGG*2100 in solving open-ended problems. These problems are related to the student's major. Additional design tools are presented, including model simulation, sensitivity analysis, linear programming, knowledge-based systems and computer programming. Complementing these tools are discussions on writing and public speaking techniques, codes, safety issues, environmental assessment and professional management. These topics are taught with the consideration of available resources and cost.
colloidal silver, solar collector water heating, swimming pool disinfection