Design and development of disinfected bin using ozonization with high pressure plasma system

Abstract

This research aimed to study a method to handle infectious waste from small hospitals and laboratories. The first section of this research was designed to create the waste tank disinfecting by high pressure plasma system of ozone technology in the laboratory scale. The waste bin could produce ozone of 600 at frequency of 10.5 KHz and 0.3 A electrical current. This was more efficient and consumed less energy power. The disinfected bin could be smoothly operated for 5 hours continuously. The next part was to study the relationship between contact time of ozone and the percentage of bacterial reduction using Escherichia coli (E. coli), and Salmonella sp. as test organisms. When applying 600 of ozone to both E. coli and Salmonella sp., the correlation analysis () between contact time and percent bacterial reduction was 0.9588 and 0.9864 for     E. coli and Salmonella sp., respectively. This result indicated that the ozonization bin with high pressure plama system could be used to disinfect E. coli, and Salmonella sp. up to 100 percent when using ozone 600 for 120 minutes.