Volume reduction of the waste after processing: by 60-80percent through complete waste dehydration such as fluid
content of the waste
All actions after loading for sterilization, fragmentation of product is to be occurred in the same chamber/vessel
Pre or Post-air evacuation should not be necessary or used
Exhaust air quality: Does not need any venting for odor management
Operating System: Fully automatic with manual over-ride. (On board PLC capable of generating written report with
cycle period, cumulated time at >121◦C
The option should be there for Web connectivity by phone, cable or
Boiler: should not need pre-heated water
Electrical requirements: 220Vac, 1ph or 400vac 3ph to suit customer needs
Noise level at complete operation: <80 dB
Working Principle of the chip
The chip should utilize steam technology together with a mechanical fragment (grinder) to sterilize
medical waste, thus making the residual waste safe for disposal in landfills.
The sterilization vessel MUST be a double walled (jacketed) cylindrical vessel.
Pre-shredding of infectious waste must not be accepted, the fragmentation must occur safely within the scaled vessel
continuously.
The sterilization vessel/chamber must be fitted with a motor driven shaft to which a heavy duty grinder (fragmenting
arm) is attached within the vessel to produce an unrecognizable size of the waste product
The fragmenting are have to rotate to agitated continuously through the heating and sterilization cycle to ensure
that the fragmented & agitated wastes (such as sharps and liquids) are exposed evenly to sterilization temperature
and pressure.
Steam heating ought to be applied to the jacket only, although the agitated waste absorbs the heat from the jacket and makes
its steam from its moisture content.
Should not desire for special autoclave bags- simple bag or box ought to be workable
MUST not need for pre-treatment of the waste.
Liquids and gases MUST remain locked within the vessel until sterilization is complete-nothing ought to be vacuumed or
pumped out in its infected state.
Jacket steam heating to dehydrate the waste completely regardless of its original water content.
All the hot condensate in the jacket is recycled, making the chip quite economical to operate
All particles of the waste should achieve a high level of sterilization and not only”disinfection” because of the
constant agitation.
The loading door ought to be mounted at an angle on the top side of the vessel with suitably sized to accommodate the
infectious wastes for which it is intended
Over-loading or loading too closely should not be an problem with this procedure, and hence no requirement of the special
operator skill.
ii)Heat –upward and fragmentation
After loading, the vessel door is to be closed, along with the outer jacket of the vessel is to be mechanically filled
with high temperature steam, which should act as the major heating medium for heating the waste
During this heating cycle, the shaft and mixing arms ought to bend continuously, causing the waste to become fragmented
and always tumbled against the hot vessel walls.
now, the waste is broken up into little fragments, and all material heats up rapidly, being evenly and
thoroughly subjected to the hot inner surfaces. The moisture content of the waste will turn in to steam, along with the vessel
will begin to pressurize.
Initially, no steam will be injected into the waste. If there insufficient moisture in the waste to pressurize the
vessel, a little bit of steam is to be automatically inserted until the desired pressure is reached.
At the end of the period, the correct sterilization temperature and ought to be reached, and the sterilization interval
should begin.
iii)Sterilization interval
The quantity of steam fed into the outer jacket is to be controlled to maintain the desired temperature & pressure of the
inner vessel.
The mixing arms (grinder) MUST continue to rotate during this cycle to make sure even sterilization pressure and
fever for many wastes.
The treatment period should be either 15 minutes at 132◦C OR 30 minutes at 121◦C to reach level 6log10 sterilization
The extreme subjugation of the waste to elevated temperature and pressure moisture in a dynamic environment should also
cause the waste to hydrolyze, that is a quick decomposition of organic material.
iv)De-pressurization
Following the treatment period, the steam into the jacket should remain on, and the internal vessel would be to
be vented through a condenser, and de-pressurized. Therefore, the waste loses its water content
by means of a combination of heat input in the jacket and trapping of water because of
depressurization.
v)De-hydration
Further dehydration will be achieved by keeping heat input and mixing-almost total dryness ought to be achieved.
After the treatment time , the steam to the jacket should remain on, and the internal vessel is to
be vented through a condenser, and de-pressurized. Thus, the waste loses its water content
through a combination of heat input from the jacket and flashing of water due to
depressurization.
v)De-hydration
Further dehydration is to be achieved by maintaining heat input and mixing-almost total dryness should be achieved.