Drain decontamination using in-situ-generated ozone

The portable ozone disinfection system described has demonstrated potential for controlling the escape of pathogens from drains. Compared with conventional liquid-based disinfection techniques, the portable ozone disinfection system has the following advantages: (i) a gaseous biocide can reach all surfaces inside the treatment target, without any restriction from orientation or surface tension; (b) ozone is effective in reducing planktonic and biofilm bacterial counts; and (c) ozone is generated at the point of use from air, using minimal electrical power, requiring no chemical delivery or storage, and producing no toxic residues.