biomedical waste management dr.praveen doddamani
TRANSCRIPT
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Dr. PRAVEEN KUMAR DODDAMANIASST. PROFESSOR
DEPT. OF MICROBIOLOGYMEDICITI INSTITUTE OF MEDICAL SCIENCES,
Medchal , R.R.dist AP(Hyderabad)
BIO-MEDICAL WASTE MANAGEMENT
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Contents
IntroductionDefinition WHO statistics Components Hazards Rules and penalties BMW 1998Management conclusion
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INTRODUCTION
• Medical care – vital in our life and health.
• BMW -emerged as issue of concern world over.
• BMW real problem for MAN, COMMUNITY,& ENVIRONMENT
• Safe scientific cost effective methods BMW management – need of hour.
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WASTESWastes
Solid waste Liquid Waste Gaseous Waste
• Household waste • Industrial waste • Biomedical waste or hospital waste
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What is Bio-medical waste ??
DefinitionWaste generated during the diagnosis, testing, treatment, research or production of biological products for humans or animals (WHO)
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• WHO estimates
85% of hospital waste is non-hazardous
10% is infectious
5% is non-infectious.
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Non-Infec-tious waste,
80%
Patholo-gical and Infectious
waste; 15%Chemical and Pharmaceutical
waste; 3%Sharps; 1%
Radioactive, Cytotoxic and heavy metals,
1%
Bio-Medical Wastes
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WHO has estimated that
In year 2000 • injections with contaminated syringes caused:
• 21 million hepatitis B virus (HBV)infections (32% of all new infections);• Two million hepatitis C virus (HCV)infections (40% of all new infections);• 260 000 HIV infections (5% of all new)
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Developed Countries- 1-5 kg/bed/day, with variations among countries.
In India- 1-2 kg/bed/day with variation among
Govt. and Private establishments.
Approximately 506.74 tons/ day wastes generated
Out of which only 57% waste undergoes proper disposal
Biomedical waste Statistics
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Sources of Bio-Medical WasteMajor Sources
Hospitals LabsResearch centersAnimal researchBlood banksNursing homesMortuariesAutopsy centers
Minor sources
Clinics Dental clinics Home care Cosmetic clinics Paramedics Funeral services Institutions
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05/02/2023 Biomedical Waste (BMW) Management
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WHO IS AT RISK??
Sanitation workers
Medical & Paramedical staff
Patients & attenders
Public
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Need of BMW Management in Hospitals???
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Small amount of infectious waste generated during patient care can make non-infectious to infectious
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•Let the waste of the “sick” not contaminate the lives of“The Healthy”
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Hazardous health care waste can result in
1. Infection
2.Genotoxicity and Cytotoxicity
3. Chemical toxicity
4.Radioactivity hazards.
5.Physical injuries
6.Public sensitivity.
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Infection
The infectious agents enter into the body through
Puncture Abrasion Cut in the skin Through mucous membranes By inhalation and ingestion.
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Most Common Infections1. Gastro enteric through faeces and/or vomit
e.g. Salmonella, Vibrio Cholera, Helminthes
Hepatitis A 2. Respiratory through inhaled secretions
e.g. Mycobacterium tuberculosis; Measles virus;
Streptococcus pneumoniae 3.Ocular infections through eye secretions
e.g. Herpes virus, 4. Skin infection through pus
e.g. Streptococcus spp , 5. Meningitis through Cerebrospinal fluid
e.g. Neisseria meningitides
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Most Common Infection Cont.
6. Blood borne diseases• AIDS • Septicaemia and bacteraemia • Viral Hepatitis B & C
7. Hemorrhagic fevers through body fluids • Lassa, Ebola and Marburg viruses
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PROBLEM ASSOCIATED WITH BMWORGANISM DISEASES CAUSED RELATED WASTE ITEM
VIRUSES HIV, Hepatitis B, Hepatitis A,C, Arboviruses, Enteroviruses
AIDS, Infectious Hepatitis,Infectious Hepatitis,Dengue, Japaneseencephalitis, tick-bornefevers, etc.
Infected needles, bodyFluids, Human excreta, soiled linen, Blood, body fluids.
BACTERIASalmonella typhi, Vibrio cholerae, Clostridium Tetani, Pseudomonas, Streptococcus
Typhoid, Cholera, TetanusWound infections,septicemia, rheumaticfever, endocarditis, skinand soft tissue infections
Human excreta andbody fluid in landfills andhospital wards, Sharps such as needles, surgical blades in hospital waste.
PARASITESWucheraria Bancrofti, Plasmodium
Cutaneous leishmaniasis,Kala Azar, Malaria
Human excreta, blood andbody fluids in poorlymanaged sewage system ofhospitals.
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Genotoxicity and Cytotoxicity
• Irritant to skin and eyesE.g. alkylating agent, intercalating agent
• Carcinogenic and Mutagenice.g. Secondary neoplasia due to
chemotherapy
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Chemical Toxicity
• Many drugs are hazardous• May cause intoxication , burns,
poisoning on exposure
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Radioactivity HazardsRadioactive waste exposure may cause headache, dizziness, vomiting, genotoxicity and tissue damage
Visual impact of the anatomical waste, recognizable body parts
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Physical injuries
• Sharps
• Chemicals
• Explosive agents
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Waste with high content of heavy metals
Blood pressure guages
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Waste Sharps eg: Needles
Human anatomical waste
Discarded medicines
Solid waste eg: cotton swabs
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Blood bags found in the municipal waste stream in violation of rules for such waste.
Hospital waste disposal
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How did BMW come into Existence
• In the late 1980’s– Items such as used syringes washed up on several East Coast
beaches USA – Concern about HIV and HBV virus infection – Lead to development of Biomedical Waste Management Law
in USA.
• However in India the seriousness about the management came into lime light only after 1990’s.
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LEGISLATION
• Recognizing the deadliest nature of the Bio-Medical Waste, the Government and Pollution Control Boards under the guidelines of Ministry of Environment and Forests(MOEF).
• MOEF have promptly designed and issued guidelines to the hospitals to ensure a proper and safe disposal of bio-medical waste
• “BIO-MEDICAL WASTE Management & Handling RULE 1998 came into effect.
• Provides uniform guidelines and code of practice for Bio-medical waste management.
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Biomedical WasteManagement and Handling Rules, 1998
[Amended in 2000]• These rules apply to all persons who generate,
collect, receive, store, transport, treat, dispose or handle bio-medical waste in any form. All Institutions generating BMW must take all steps to ensure that such waste is handled without any adverse effect to human health and the environment
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PENALTIES AS PER RULES
• The PENALTIES are as specified in Environment (Protection) Act 1986.
• Imprisonment for upto five years with fine upto one lakh rupees, or both.
• In case the failure additional fine upto five thousand rupees for every day.
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Bio-Medical Waste Disposal Cycle
Common Facility(Transportation, Treatment
And Disposal)
Legislation (BMW Rule)
Implement ting Authority
Waste Generator(Hospitals)
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Bio-Medical Waste Flow Chart
In House Segregation(Collection, Segregation Packing
in Color Coded Poly Bags)
Common Storage PointAt
Hospitals
Transportation (Approved Special Vehicle)
Unloading and Temp Storage at CBWTF
Treatment(Incineration, Autoclaving
and Shredding)Disposal
( Recycling & Landfill)
Waste Water to ETP
Re Use
Generator (HOSPITALS)
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WASTE CATEGORY TYPE OF WASTE TREATMENT AND
DISPOSAL OPTION
Category No. 1 Human Anatomical Waste (Human tissues, organs, body parts) Incineration@ / deep burial*
Category No. 2
Animal Waste(Animal tissues, organs, body parts, carcasses, bleeding parts, fluid, blood and experimental animals used in research, waste generated by veterinary hospitals and colleges, discharge from
hospitals, animal houses)
Incineration@ / deep burial*
Category No. 3
Microbiology & Biotechnology Waste (Wastes from laboratory cultures, stocks or specimen of live micro organisms or
attenuated vaccines, human and animal cell cultures used in research and infectious agents from research and industrial
laboratories, wastes from production of biologicals, toxins and devices used for transfer of cultures)
Local autoclaving/ microwaving / incineration@
Categories of Biomedical Waste Schedule as per WHO Standard
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Category No. 4
Waste Sharps (Needles, syringes, scalpels, blades, glass, etc. that may cause puncture and
cuts. This includes both used and unused sharps)
Disinfecting (chemical treatment@@ / autoclaving / microwaving and mutilation /
shredding
Category No. 5Discarded Medicine and Cytotoxic drugs
(Wastes comprising of outdated, contaminated and discarded medicines)
Incineration@ / destruction and drugs disposal in secured
landfills
Category No. 6
Soiled Waste (Items contaminated with body fluids including cotton, dressings, soiled plaster
casts, lines, bedding and other materials contaminated with blood.)
Incineration@ / autoclaving / microwaving
Category No. 7Solid Waste (Waste generated from disposable
items other than the waste sharps such as tubing, catheters, intravenous sets, etc.)
Disinfecting by chemical treatment@@ / autoclaving / microwaving and mutilation /
shredding# #
Categories of Biomedical Waste Schedule as per WHO standards Cont….
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Category No. 8Liquid Waste (Waste generated from the laboratory and washing, cleaning, house keeping and disinfecting activities)
Disinfecting by chemical treatment@@ and discharge into drains
Category No. 9 Incineration Ash (Ash from incineration of any biomedical waste) Disposal in municipal landfill
Category No.10Chemical Waste (Chemicals used in
production of biologicals, chemicals used in disinfecting, as insecticides, etc.)
Chemical treatment @@ and discharge into drains for liquids and secured landfill for solids.
Categories of Biomedical Waste Schedule as per WHO standards cont….
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COLOR CODING FOR SEGREGATION OF BMW 1998
COLOR WASTE TREAT
Yellow Human & Animal anatomical waste / Micro-biology waste and soiled cotton/dressings/linen/beddings etc.
Incineration/DB/
Red Tubings, Catheters, IV sets. Autocl/microwav/chemical treatment
Blue / White
Waste sharps ( Needles, Syringes, Scalpels, blades etc. )
Autocl/microwav/chemical treatment/destruction/shredding
Black Discarded medicines/cytotoxic drugs,Incineration ash, Chemical waste.
Disposal in land fields
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2011
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Awareness of BMW Management and treatment among HCW
Study subjects Total Aware (%)
Doctors 56 43 (76.8)
Interns 65 25(38.5)
Nurses 83 68(81.9)
Technicians 44 12(27.3)
Attenders 78 23(29.5)
House keeping staff 57 11(19.3)
Source:International Journal for Basic Medical Science
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HOW TO MANAGE BMW??
1. Survey of waste generated 2. reduction at source .3. Segregation of hospital waste.4. Collection & Categorization of
waste.5. Storage of waste.6. Transportation of waste.7. Treatment of waste.
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If you are not measuring it, you are not managing it.
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Source Reduction
• Source Reduction - ways to lessen the amount of material
– Segregation - keeping noninfectious waste out of the infectious waste stream
– Minimization - reduce or eliminate waste at the source
– Engineering controls - methods to reduce quantity of waste(smaller containers)
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Steps to Manage Hazardous Wastes before Disposal
1. Know what hazards you have.
2. Purchase smallest quantity needed, and don’t purchase hazardous materials if safe alternative exists
**Use mercury-free thermometers
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Steps to Manage Hazardous Wastes (cont..)
3. Limit use and access to trained persons with personal protective gear
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4. Use Engineering Controls such as Ventilation, Hoods for Select Hazards
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5. Get Rid of Unnecessary Stuff
• Don’t accumulate unneeded products
• Don’t let peroxides and oxidising agents turn into bombs
5: Managing Medical Waste Slide 48
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6. Label of Hazard Warnings
toxic
biohazard
inflammable
corrosiveRadiation
Gas bottle explosive
Health danger
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7. Communicate about Work -place Hazards
• Job description• Posters on doors• Labels on hazards• Give feedback on use of PPE
and disposal in evaluation• Role model safe use and
disposal• Contact point who is
responsible
5: Managing Medical Waste Slide 50
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LABEL FOR BIO-MEDICAL WASTE CONTAINERS/BAGS
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8. Recycle Products When Possible
5: Managing Medical Waste
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Segregation of waste
At the point of generation
In a color coded leak-proof container
Container should bear 'Biohazard' symbol and appropriate wording
Container should never be completely filled
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Segregation of waste should be observed strictly
To avoid mixing of general (non-infectious) waste into infectious waste. Once mixed, becomes infectious and should not be removed.
To reduce infectious waste
To decrease expenditure on disposal of infectious waste
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COLOR CODING FOR SEGREGATION OF BMW 1998
COLOR WASTE
Yellow Human & Animal anatomical waste / Micro-biology waste and soiled cotton/dressings/linen/beddings etc.
Red Tubings, Catheters, IV sets.
Blue / White
Waste sharps ( Needles, Syringes, Scalpels, blades etc. )
Black Discarded medicines/cytotoxic drugs,Incineration ash, Chemical waste.
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Microbiological waste Autoclaving
Final disposal as a general waste- Black Bag
Wastes requiring pretreatment before disposal
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WASTE•Tubes used for serum separation, centrifugation of samples, preparation of dilutions etc.
sample cups ,Tips , Caps.
Any other contaminated plastic wares
Sodium hypochlorite
Method: Chemical Disinfection
Pretreatment before disposal Cont…
Final Disposal- Blue bag
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-Frequency of changing of Na hypochlorite solution-Daily
Who prepares the solution?-Technical person. A trained housekeeping person can do preparation under observation.
Disposal of liquid and solid
- Liquid: Pour into drain with running tap
- Solid: Blue bag
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Yellow bagContaminated gloves; latex & plastic(Uncontaminated – general waste)
Contaminated tissue /blotting papersContaminated cottonHuman tissue/organs
White sharp disposal containerBroken glass, pipettes, broken test tubes, Needles, razor blade, scalpel
Waste disposed without pretreatment
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Attention !!
Do not allow the containers to overfill
Arrange containers near the operation area at accessible distance
Ensure that the disposed item is inside the container and not hanging at the edge
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PACKAGING & LABELING:
• Bags 3/4th filled should be tied,• be supervised Name of Ward, • Date of Packaging, • Destination (Treatment Site)• Bio Hazard/Cytotoxic Symbol• Weighing & Recording • Separate Register and Weighing Machine• Daily recording is mandatory
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Bad Practice -Storage:
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Collection, transportation, storage (within the hospital)
• Waste collected and stored in thick non-corrosive disposable
plastic bags or containers of specific colour code.
• The waste in bags or containers should be stored in a
separate area, room, or building of a size appropriate to the
quantities of waste produced and the frequency of
collection.
• Health care waste should be transported within the hospital
or other facility by means of hand cart wheeled trolley .
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LABEL FOR TRANSPORT OF BIO-MEDICAL WASTE CONTAINERS/BAGS
• Date of generation ...................• Waste category No ........• Waste class……………• Waste description………….• Sender's Name & Address………..
Contact Person…………..• Receiver's Name & Address……… Contact Person…………..
• In case of emergency please contact, Name & address………. Label shall be non-washable and prominently visible.
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TRANSPORTATION
• Transportation of BMW can be divided into internal and external transportation.
• INTERNAL: it is for yellow ,red ,blue and white bags.
• EXTERNAL: it is for the general waste collected in the black coloured plastic bags.
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Safe TransportationREGISTERED, AUTHORIZED, BMW TRANSPORTERS
G.J
multiclav
e
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Do you have a bio-spill kit? Container of undiluted household bleach Several pairs of gloves Safety glasses Absorbent material Biohazardous waste (autoclave) bags Dust pan & scoop or tongs for broken glass
Place in a labeled bag or bucket and keep in areas where biohazards are used
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DISPOSAL METHODS OF BIO-MEDICAL WASTES
• Incineration• Chemical disinfection• Inertisation• Autoclave• Encapsulation• Microwave• Shredder• Plasma pyrolysis• Deep burial
• G.J multiclave Ltd is external agency managing final disposal in this zone.
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BMW RULES 2011 v/s 19982011 1998
Every occupier generating BMW, irrespective of the quantum of wastes comes under the BMW Rules and requires to obtain authorisation
Occupiers with more than 1000 beds required to obtain authorisation
Duties of the operator listed Operator duties absent
Categories of Biomedical Waste reduced to Eight
Biomedical waste divided in ten categories
Treatment and disposal of BMW made mandatory for all the HCEs
Rules restricted to HCEs with more than 1000 beds
A format for annual report appended with the Rules
No format for Annual Report
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ACCIDENT REPORTING• 1. Date and time of accident:• 2. Sequence of events leading to accident• 3. The waste involved in accident :• 4. Assessment of the effects of the accidents on human health and the environment,.• 5. Emergency measures taken• 6. Steps taken to alleviate the effects of
accidents• 7. Steps taken to prevent the recurrence of
such an accident
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ANNUAL REPORT
• To be submitted to the prescribed authority by 31 January every year
• Name of the occupier with Address• Categories of waste generated and Quantity
[monthly average] basis:• Name of treatment facility with Address• Category-wise quantity of waste treated• Mode of treatment with details:• Any other information
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STAFF SAFETY
• Proper training• Personal protective clothing and equipment • Immunization• Post-exposure prophylaxis• Medical surveillance• Personal hygiene
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Responsibility
Infection control is everyone's business.
You are not only protecting yourself, but also those around you
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Conclusion Thus refuse disposal cannot be solved
without public education.
Individual participation is required.
Municipality and government should pay importance to disposal of waste economically.
Thus educating and motivating oneself first is important and then preach others about it.
PPE does not replace proper procedures and techniques, consider all as hazard.
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Our’s is a Beautiful Planet…Let us save together…
Lets Make This World A Better Place to Live in.
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THANK YOU
• References:• MOEF guidelines INDIA• BMW(management & handling) RULES 1998• WHO guidelines & CDC guidelines• Current world environment journal-Need for
BMW management system vol 7,2012.