MEDICAL WASTAGE AN ISSUE OF URBAN LIVING.ppt

MEDICAL

1. CONTENTS
•What is medical waste
•Types of medical waste
•Categorization of medical waste
•Quantum of medical waste
•Regulatory frame work in India
a) Bio-Medical Waste (Management and Handling)
Rules 1998
b) Specific guidelines for handling sharps
•Management of medical waste
•Precautions while handling medical waste
•Treatment technologies for medical waste
•Conclusion
•References

2. WHAT IS MEDICAL WASTE
Waste that is generated in the diagnosis, treatment or
immunization of human beings or animals, in research
pertaining thereto, or in the production or testing of biologicals,
including but not limitedto:
•Blood soaked bandages,
•Culture dishes and other glass wares,
•Discarded surgical gloves (after surgery),
•Discarded surgical instruments (scalpels),
•Needles( used to give shots or draw blood),
•Removed body organs (tonsils, appendices, limbs etc.),and
•Lancets.

3. Hazardous
TYPES OF MEDICAL WASTE
Non infectious
Paper from offices
Corrugated cardboard
Glass
Metal
Plastic packaging
Food waste
Blood and blood products
Pathological waste
Sharps
Cultures and stocks of
infectious agents
Contaminated equipment
Isolation waste
Glassware
Infectious
Formaldehyde
Cytotoxic chemicals
Photographic chemicals
Radionuclides
Solvents
Toxic chemicals
Waste anesthetic gases

4. CATEGORIZATION OF MEDICAL WASTE
•Some can be reused or recycled
•Some safely disposed off as household waste
•Some require special treatment and disposal
techniques to guard against any risk to human
health and environment.
Medical waste is categorized in many ways in different
parts of the world since it comprises a variable mixture
of waste which are very different
Waste categories are specified by national/local
regulations.

5. Option Waste category Treatment and disposal
Category no.1 Human Anatomical
Waste
Incineration; deep burial
Category no.2 Animal Waste Incineration; deep burial
Category no.3 Microbiology and
biotechnology waste
Local autoclaving/micro-waving
/incineration
Category no.4 Waste sharps Disinfection and
mutilation/shredding
Category no.5 Discarded medicines
and Cytotoxic drugs
Incineration; destruction and drugs
disposal in secured landfill
Category no.6 Soiled Waste Incineration; autoclaving/micro-waving
Category no.7 Solid waste Disinfection by chemical treatment;
autoclaving/micro-waving and
mutilation/shredding
Category no.8 Liquid waste Disinfection by chemical treatment and
discharge into drain
Category no.9 Incineration Ash Disposal in municipal landfill
Category no.10 Chemical Waste Chemical treatment; and discharge into
drains for liquids and secured landfill for
Solids.

6. QUANTUM OF MEDICAL WASTE
Hospital waste generated in developing countries
( per patient) is much less as compared to the volume
generated in the developed countries.
Volume of waste generated from a medical facility in
developing countries ranges from1-3Kg/day/bed as
compared to 5-8Kg/day/bed in developed countries.

7. MANAGEMENT OF MEDICAL WASTE

8. •The management of medical waste is still in its infancy
all over the world.
•Unless carefully managed, medical waste can take
diseases from hospital beds to our homes.
•In most of the developing countries, it is very poorly
managed.
•In medical waste management the hazards and risks
multiply not just to the generators and operators but
also affect the general community.

9. •Significant cooperation among the concerned parties
and commitment in terms of time and resources.
•Ability and the willingness of the responsible parties to
review their current practices and adopt prevention of
waste generation as a priority.
•Limited access to financial resources as well as to
scientific and technical assistance may also limit the
success of a management programme.
•The best mantra which can be followed in the
management of any type of waste is the three R’s that
are Reduce, Reuse andRecycle.

10. Waste minimization
1.Segregation
2.Source reduction
3.Resource recovery and recycling
4.Education
5.Purchasing practices

11. REGULATORY FRAMEWORK IN INDIA
•In India, there was no legislation on medical waste till
the MoEF proposed the first draft rules in 1995.
•The second draft rules were notified in1997.
•The final rules were notified on 20 July 1998 and were
called Bio Medical Waste (Management and Handling)
rules 1998
•These rules were enacted under EPA 1986

12. The rules have specified a three bin systemfor the
segregation of wastes:
1) Yellow bin
2) Blue bin
3) Puncture proof containers

13. Bio-Medical Waste
(Management & Handling) Rules
1998
•The rules apply to all persons who generate, collect,
receive, transport, treat, dispose, store, or handle bio-
medical waste in any form.
•It is the duty of the occupier, where required to set up
requisite bio-medical waste treatment facilities for
treatment of waste, or ensure requisite treatment of
waste at a common waste treatment facility.
Salient features

14. •Bio-medical waste is to be treated and disposed in
accordance with Schedule I.
•Bio-medical waste has to be segregated at the point
of generation before its storage, transportation,
treatment and disposal.
•No untreated bio-medical waste can be kept beyond
a period of 48 hours.

15. •Prescribed Authority
•Authorization
•Advisory committee
•Annual report
•Maintenance of records
•Accident reporting
•Appeal

16. Specific guidelines for handling sharps
Definition of sharps:The rules categorize sharps in
Category No 4.Sharps are defined as comprising of
needles, syringes, scalpels, blades, glass, i.e. anything
that may cause puncture and cuts. These include both
used and unused sharps.
Segregation and storage:The types of containers
prescribed for waste sharps have to be puncture-proof
and can be blue, white or translucent in color.

17. Treatment:Chemical treatment /autoclaving/
rotoclaves/ microwaving.
Mutilation prior to disposal is mandatory to prevent any
unauthorized re-use.
Final disposal:After disinfection and mutilation of
sharps they should be disposed in secured landfills as
per the rules. As secured landfills are not available
everywhere alternate systems recommended include:

18. a)Sharps pit:
Pit can be dug and lined
with brick, masonry or
concrete rings. The pit
should be
covered with a heavy
concrete slab.

19. a)Encapsulation:
Sharpsare collected in puncture-proof and leak proof
Containers.
When a container is three-
quarter full, a material such
as cement mortar,
bituminous sand, plastic
foam, or clay is poured in
until the container is
completely filled.
After the medium has dried,
the containers are sealed
and disposed of in landfill
sites.

20. Never transfer sharps
directly from person to
person
Never recap the needles
Never overload bins
used for storing Bio
Medical Waste
Do not inhale chemicals
directly.Use always
mask.
Keep away sharps medicines from children
Never transfer sharp directly
PRECAUTIONS FOR HANDLING MEDICAL WASTE

21. 1)Incineration
•Most common method.
•Temperature:1600°F -2500°F or 871°C -1371°C
•Over 90% of infectious waste is often burned in
incinerators.
•Incinerators are either located onsite or offsite.
TREATMENT TECHNOLOGIES FOR
MEDICAL WASTE

22. 2) Reduces overall energy cost.
Advantages:
1)Reduce landfill cost.
Disadvantages:
1)Emit toxic air pollutants.
2) Incineration ash is potentially
hazardous.
3)Health impacts of incineration

23. 2)Steam sanitation
•Carried out in device called Autoclave
•Process takes 30-90 minutes
•Temperature: 30-190°C
•Volume reduced by 75%
•Residue can be landfilled
•Used for low radioactive, chemical, pathological waste

25. 3) Dry heat disinfection
Fragmentation of waste and preheating in a rotating
auger
Temperature varies from 110-140°C
Process takes 20 min.
Volume reduced by 80%
Recommended for the treatment of infectious waste
and sharps

26. 4)Chemical disinfection
a) Aldehydes
b) Chlorine compounds
c) Ammonium salts
d) Phenol compounds
a) Infected body fluids
b) Microbiological waste
c) Reusable objects
d) Hospital sewer systems
This technology is used for :
Chemicals used are:

27. 5) Microwave sanitation
•Microorganisms destroyed by waves of frequency
2450MHz.
•Waste are shredded before the process.
•Volume reduced by 80%.

28. 6) Hydroclave
•Based on hydrolysis of organic material.
•Dry, sterilized waste are shredded and their volume
reduced by 80%.
•Total process takes one hour.
•Used for infectious and anatomical waste.

29. 7)Rotoclave
Process is fully automated.
Modernized version of autoclave.
Sterilizing agent is water vapour in a rotating
pressure chamber.
Used for laboratory waste, bedding material & animal
waste.

39. •The only alternative that holds promise for waste
disposal seems to be ingoing back to mother earth.
•Earthworms have succeeded in reducing even the
toughest of pathogens to compost dust.
•This bioreactor work silently without making its presence
felt-there is no smell, it does not attract flies and the result
is rich manure.
7) Vermiculture-deep burrowing earthworms

40. With newer diseases attacking human kind, it is
incumbent on the part of the medical fraternity to ensure
that hospitals don’t become breeding grounds for
infections.
Awareness and sensitization at all levels through
education, training and internal communication are must.
CONCLUSION

41. REFERENCES
www.studymafia.org
www.google.com
www.wikipedia.com
seminarppt.com
Studymafia.net