All particles of this waste should attain a high degree of sterilization and not only “disinfection” due to the
constant agitations
Description of the Treatment Cycle of this processor
- i) Loading
* The waste needs to be loaded with falling bagged and or boxed waste into the open loading door on the boat.
* The loading door should be mounted at an angle on time top side, of this boat with appropriately sized to accommodate the
infectious wastes which it is intended
* Over-loading or loading too closely shouldn’t be an problem with this procedure, and hence no requirement of the special
operator skill.
- ii) Heat-up and fragmentation
* After loading, the boat door is to be closed, and the outer coat of this container is to be mechanically filled with
high temperature steam, which should behave as the major heating medium for heating the waste.
* Throughout this heating cycle, the mixing and shall arms should rotate constantly, causing the waste to be fragmented
and continuously tumbled against the hot vessel walls.
* At this point, the waste is broken into small fragments, and all material heats up rapidly, being equally and
completely subjected to the hot inner surfaces. The moisture content of the Waste will turn in to steam, and the container
will start to pressurize.
* Initially, no steam will be injected into the waste.
* At the conclusion of the period, the right sterilization temperature and pressure should be achieved, and the
sterilization period should start.
iii) Sterilization period
* The amount of steam fed to the outer coat is to be controlled to keep the desired temperature & pressure of this
inner vessel,
* The mixing arms (grinder) MUST continue to rotate during this cycle to make sure even sterilization pressure and
temperature for many transports.
* The treatment period should be either15 minutes at 132° C OR 30 minutes at 121° C to accomplish level 6log10
sterilization.
* The most intense subjugation of this waste to high temperature and pressure moisture in a lively environment should also
cause the waste to hydrolyze that is a quick decomposition of organic material.
* After the treatment period, the steam to the coat should stay on, and also the inner vessel will be vented through a
- iv) De-pressurization:
condenser, and de-pressurized. Therefore, the waste loses its water content by means of a mixture of heat input in the
coat and flashing of water due to depressurization.
* Further dehydration is to be accomplished by maintaining heat mixing and input – almost total dryness should be gained.
- v) Dc-hydration
* The boat should now be ready for another treatment cycle, using retained most of its heat for the remedy of this
following batch.
- vi) Unloading
* Finally, steam to the jacket should shut off, the unloading door is to be opened
* Then the shaft and mixing arms are reversed to act as unloading mechanism and should scoop the waste fragments out of
the unloading door, onto a conveyor belt or directly into a waste container.
* The vessel should now be ready for another treatment cycle, having retained most of its heat for the treatment of the
next batch.