Page 40 - Mechanic Diesel - TT

MECHANIC DIESEL - CITS

Fig 24

Microwave (Fig 25) For liquids and small quantities, a 1-10% solution of bleach can be used to disinfect biomedical
waste. Solutions of sodium hydroxide and other chemical disinfectants may also be used, depending on the
waste’s characteristics.
Microwave disinfection can also be employed for treatment of biomedical wastes. Microwave irradiation is a
type of non-contact heating technologies for disinfection. Microwave chemistry is based on efficient heating of
materials by microwave dielectric heating effects. When exposed to microwave frequencies, the dipoles of the
water molecules present in cells re-align with the applied electric field. As the field oscillates, the dipoles attempts
to realign itself with the alternating electric field and in this process, energy is lost in the form of heat through
molecular friction and dielectric loss. Microwave disinfection is a recently developed technology which provides
advantage over old existing technologies of autoclaves as microwave based disinfection has less cycle time,
power consumption and it requires minimal usage of water and consumables as compared to autoclaves.
Microwave (Fig 25) For liquids and small quantities, a 1-10% solution of bleach can be used to disinfect biomedical
waste. Solutions of sodium hydroxide and other chemical disinfectants may also be used, depending on the
waste’s characteristics.

Fig 25

Chemical disinfection plant (Fig 26)
Other treatment methods include heat, alkaline digesters and the use of microwaves. For autoclaves and
microwave systems, a shredder may be used as a final treatment step to render the waste unrecognizable. Some
autoclaves have built in shredders.
Bio-medical Waste (Management and Handling) Rules & Amendments

The Bio-medical Waste (Management and Handling) Rules, 1998 and further amendments were passed for the
regulation of bio-medical waste management. On 28th Mar 2016 Biomedical Waste Management Rules 2016
were also notified by Central Govt. Each state’s Pollution Control Board or Pollution Control Committee will be

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CITS : Automotive - Mechanic Diesel - Lesson 01 - 04