ozone Current Affairs - 2020

“Ultra Swachh” Booth developed by DRDO to disinfect PPEs

The Defence Research Development Organization (DRDO) developed a disinfection unit called Ultra Swachh. The unit is used to disinfect articles such as electronic items, Personal Protective Equipment, fabrics, etc.

About the unit

The Unit uses an advanced oxidative process called Ozonated Space Technology to disinfect the items. The device also uses Ozone Sealant Technology that involves trapping of Ozone.

The Ultra Swachh Unit houses a catalytic converter that makes it environment friendly. It also holds several safety features such as door interlocks, emergency shut down, delay cycle, dual doors, leak monitors, etc.

The system complies to International Standards of Industrial, Personal, Occupations and Environmental Safety.

Ozone as disinfectant

Ozone is an oxidizing compound that rapidly oxidizes organic materials, manganese, iron, etc. Ozone is highly unstable and oxidises to form oxygen within 15 to 20 seconds. This property of ozone is used in disinfection.

Because of its high oxidization potential, ozone disinfects or rather oxidises cell components. When the cellular wall or membrane of a cell gets damaged, the cell falls apart. This process is called lysis. It is through this process, ozone oxidises or kills microorganisms.

Two new products to enable COVID-19 disinfection process introduced by DRDO

The unit has been developed by Centre for Fire Explosive and Environment Safety by using its expertise in mist technology used to suppress fire. The unit uses water mist aerator technology to spray sanitizer while entering public places. There are no contacts between the user and the unit throughout its operation.


The unit uses an ultrasonic sensor. An atomizer has been fixed to minimize the release of sanitizer. The unit will release 5 to 6 ml of sanitizer in 12 seconds.


The unit can be installed in malls, hospitals, office buildings, airports, residential buildings, railway stations, metro stations.

UV sanitization box

The box uses Ultra Violet rays to kill the genetic material in virus such as COVID-19. The UV rays produced in the box is of wavelength 185 nm. This wavelength produces ozone gas as well. The box is a hand held device. It can be used to disinfect house hold objects, files, food packets, etc. The exposure time required for an object to get disinfected is 45 seconds.