type of Waste Management and disposal .ppt

Environmental Management

1. How to handle waste?
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2. Process Approach 2

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4. 4

5. 5
C
O
S
T
CYCLE

6. Introduction
•Safe, healthy & productive workplace environment
•Responsible and effectively handling of hazardous waste
•Good etiquette
•Municipal and government laws exist to regulate and control
hazardous waste disposal
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7. Waste Removal
•Cost enormous
•Contractor -…………………………
•Waste removal is arrange via ………………………
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8. Waste management
Manage waste responsible:
•Classification/ Characterizing hazardous waste
•Proper packaging
•Proper storage of waste
•Effective labeling
•Waste collection protocol in place
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9. Types of waste
•Normal Municipal waste (general)
•Recyclable waste
•Broken Glass
•Biological / Medical waste
•Chemical waste
•Sharps, Broken Glass
•Radioactive material waste
•Electronic and computer waste
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10. Hazardous Waste
•Any waste that directly or indirectly represents
a threat to human health or to the environment
by introducing one or more of the following
risks:
•Explosion or fire
•Infections, pathogens, parasites or their vectors
•Chemical instability, reactions or corrosion
•Acute or chronic toxicity
•Cancer, mutations or birth defects
•Toxicity or damage to the ecosystems or natural
resources
•Accumulation in the biological food chain,
persistence in the environment or multiple effects
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11. CHEMICAL WASTE 11

12. Classification dangerous goods and substances
•Class 1 Explosives
•Class 2 Gases
•Class 3 Flammable liquids
•Class 4 Flammable solids
•Class 5 Oxidizing substances and organic
peroxides
•Class 6 Toxic and infectious substances
•Class 7 Radioactive Substances
•Class 8 Corrosives
•Class 9 Other miscellaneous substances
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13. Segregate chemical waste
•Proper segregation =good chemical hygiene + safe
workplace environment
•Only put compatible chemicals in a container
•Also do not store the following near each other
•Acids and bases
•Organics and acids
•Powdered or reactive metals and combustible materials
•Cyanide, sulfide or arsenic compounds and acids
•Mercury or silver and ammonium containing compounds
•Do not mix solids and liquids
•Halogenated with non-halogenated chemicals
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14. Chemical Waste Compatibility (1)
•Incompatible chemical waste not be mixed or store together
•If it must be store in same area –separated secondary
containment
•Container must be compatible with the waste:
•Mineral acids -plastic
•Bases -Plastic
•Oxidizers -Glass
•Organics (incl Acetic acid) -Glass
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15. Chemical Waste Compatibility (2)
Take special care
•Nitric acid:
Reacts with organics-heat & gas
Be sure container is rinse thoroughly
•Perchloric acid, Organic Peroxides:
Highly reactive with organics and organic material (wood).
May react with metals
•Hydrofluoric acid:
Dissolves glass containers
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16. Packaging of chemical waste (1)
•Place hazardous waste in sealable containers
•Enviroserv supply different plastic and metal containers
•Sized from 25L to 200L, plastic or metal.
•Containers must be kept closed.
•Do not leave a hazardous waste container with a funnel in
it.
•Glass bottles with waste must be packed with vermiculite
into bigger containers.
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17. Packaging of chemical waste (2)
•The container should not react with the waste being
stored (e.g. NO hydrofluoric acid in glass)
•Similar wastes may be mixed if they are compatible
•Wastes from incompatible hazard classes should not
be mixed (e.g. organic solvents with oxiders)
•Be aware that certain metals also cause disposal
problems when mixed with flammable liquid or other
organic liquids.
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18. Labeling
•Must be labeled as HAZARDOUS WASTE
•Should be accurate, legible and fully explained
•Contain name of the department, lab group name, contact person
details, content and concentration, hazard class, date
•Use Enviroserv /Sanumed self adhesive labels or your own.
•Waste vs. used
•No old labels
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19. Waste classification by Enviroserv
Specific codes for different departments
CodeType Disposal Method
•3AFlammables ...
•3BToxic compounds E
•3CPolyetheleneGlycols TA
•3DContaminated Broken Glass TC
•3EContaminated tips, tubes TC
•3FMineral acids ITP with Lime
•3GConcentrated organic acids TWC
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20. Storage
•Select the correct container (glass / polyethylene) for storage
•Use original containers if possible
•Use appropriate sized container
•Do not make containers too heavy to lift by the contractors
•Containers must be tightly sealed and not leak
•Containers correctly labeled
•Container compatible with chemical being stored -separate
containers for each type of waste
•Do not store longer than 90 days
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21. Collection Procedures
•Pack all waste in drums provided by contractors
•Ensure glass bottles are prevented from breaking by adding
vermiculite
•All drums must be properly classified and labelled as
HAZARDOUS WASTE
•When drums are full, fill in a pick-up form and forward to
USBD (Piet van Deventer, email [email protected])
•USBD will arrange for contractors (Enviroserv) to pick up the
drums at your department
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22. USBD formCHEMICAL / BIOLOGICAL WASTE PICK -UP REQUEST FORM

Department Information

To: Piet van Deventer; Risk and Protection Services, University of Stellenbosch

From: __FAWZIA GORDON_

Building: _NATURAL SCIENCE BUILDING

Department: _BOTANY & ZOOLOGY ____

Room #: 3056 Tel: __808 2402, Cell: 083 611 0644_

E-mail: [email protected]____________________

Date: 21 OCTOBER 2005

Waste Information

Please arrange for the disposal of the following hazardous waste material:

See attached page
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Container
Code
Disposal
Method
Type of Waste/
Waste Description
Quantity to be REMOVED
with size of container
Quantity to be
REPLACED
with size of
container
Other
Comments
3 A ABW Ethanol-10% Formalin mix 1x 25 L Tight head Metal drum –OWN
3A ABW Ethanol, 1x 50L Open head drum, Plastic
3D TC Broken Glass, some chemically
soiled
1x 50L Open head drum, Plastic
3 E TC Plastic Tips, Tubes, Gloves, Paper
Towels soiled with Ethidium
bromide, dried ethidium bromide
gels
1x 200L Open head drums, Plastic None
3 E TC Plastic Tips & Tubes empty
(Chemically soiled)
3x 200L Open head drums, Plastic 4x 200L Open head
Plastic drum
3 E TC Plastic Tips & Tubes empty
(Chemically soiled)
2x 50 L Open head drum, Plastic 4x 50L Open head Plastic
drum

24. Special waste (1)
•Ethidium Bromide
•Electrophoresis gels < 0.1% -trash
•Electrophoresis gels >0.1% -biohazard box
•EtBr solution-charcoal filtration
•Mercury
•Spilled-pooled droplets, gloves & paper-puncture resistant container –label
“mercury spill debris”
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25. Special waste (2)
•Silica gel
•Not grossly contaminated –normal lab trash
•Heavy contaminated-disposed as hazardous waste
•Batteries
•Classified as universal waste rather than hazardous waste
•Contain mercury, cadmium, lead, silver, lead-acid
•Alkaline (no Hg) -not to be put in the normal trash.
•South Africa Recycle program?
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26. Unidentified Chemical waste
•Should be considered unknown hazardous waste.
•Unknown waste cannot be legally transported or disposed.
•To dispose them safely and properly it need to be
characterised by Enviroservwhich is a costly affair.
•Find out as much as possible about how the waste was
generated.
•Please DO NOT
Pour unknown chemicals down the drain
Mix unknown chemicals with any other chemicals
Bring unknown chemicals to a regular waste pick up
Abandon unknown chemicals in the work area.
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27. BIOLOGICAL WASTE
•Definition:Waste generated from biologically-cultured
stocks and plates, molecular material, blood, animal and
plant tissues etc.
•All sharps e.g. glass implements, needles, syringes,
blades, glass Pasteur pipettes
•Separate biological waste from chemical hazardous
waste
•Treat to eliminate biohazard by sterilization or
incineration
•Label correct, use biohazard tape
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28. Biological waste cont.
•Animal Bedding waste
•Bagged –not be mixed with other waste
•Labelled as animal bedding waste
•Are to be autoclaved before being placed in medical waste
boxes –disposed in the medical waste stream
•Animal carcasses
•Are kept frozen
•Get an order number from Elmarie King –USBD ([email protected])
•Department took the carcasses themselves to the Western
Province Veterinary lab , Stb for incineration
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29. Containers (1) –Biological
•Biohazard/medical
waste boxes
•Disposal of non-sharp
bio hazardous waste
•Cardboard box lined
with a red 45 micron
plastic bag
•Two sizes 50 and 142
litre-max 15kg
•Seal bag with cable tie,
seal box with biohaz
.tape
•Sanumed destruct it by
high temp. incineration
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30. Containers (2) –Biological
•Biohazard Sharp containers
•Disposal sharp bio-hazardous waste
•100% puncture proof
•Available in 4, 7.6, 10, 15 and 25 l
•Destruction by high temp
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31. Containers (3) –Biological
•Specimen bins
•For safe human and animal tissue
disposal.
•Ideal for wet waste
•Available in 2.5, 5 and 10lbin
•Destruction by high temp
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32. Points to remember
•No bio-hazardous waste shall be stored for longer than
24 hours without being decontaminated
•Decontaminated bio-hazardous waste stored up to 30
days
•No storage public areas
•Store under refrigeration if necessary to prevent odors
•Sharps containers treated as regular bio-hazardous waste
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33. Bio-hazardous waste Pick-up Procedures
•Seal red bags when ¾ full with cable ties
provided by contractor
•Seal Biohazard/Medical waste boxes with
biohazard tape
•Complete chemical/biological waste pick-up
request form
•Forward electronically to USBD
•USBDwill arrange for contractor (Sanumed)
to pick up waste and replace containers as
needed
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34. Ways to minimize waste
•Good housekeeping
•Document Procedures
•Maintain Chemical inventory
•Centralize purchasing
•Spill Preparedness
•Neutralize corrosives
•Minimize use of solvents
•Use alternative products
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35. Information 35

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