Interdisciplinary Areas Grade 10
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Hazardous waste: This refers to waste materials that are dangerous or potentially
harmful to human health, wildlife, or the environment. It could be in the form of
solids, liquids, gases, or sludges and is typically generated from industrial,
commercial, medical, or household activities. Hazardous waste may exhibit one
or more of the following characteristics:
Toxicity : Poisonous and harmful when ingested, inhaled, or absorbed.
Flammability : Easily ignites and poses fire hazards.
Corrosivity : Can corrode materials or living tissue, such as strong acids and
bases.
Reactivity : Can explode or release harmful gases when mixed with other
substances
Examples include industrial chemicals, batteries, pesticides, medical waste, and
asbestos. Proper handling, treatment, and disposal of hazardous waste is
essential to minimise environmental damage and protect public health.
Bio-medical waste: This refers to any waste generated during the diagnosis,
treatment, or immunisation of humans or animals, as well as research activities
or the production and testing of biological products. This type of waste is
typically produced by healthcare facilities such as hospitals, clinics, laboratories,
veterinary institutions, and research centres.
Key Characteristics of Bio-medical Waste:
Categories: This includes infectious waste, pathological waste (e.g., tissues,
organs), sharps (e.g., needles, scalpels), pharmaceutical waste, and chemical
waste.
1.
Hazard: This can pose serious risks to human health and the environment if
not managed properly, as it may contain infectious agents, toxic chemicals, or
hazardous biological materials.
2.
Disposal: Requires proper segregation, treatment (e.g., incineration,
autoclaving), and disposal to prevent contamination and the spread of
infections.
3.
Soiled diapers and sanitary pads
Used bandages, gauze, and cotton
Discarded syringes and needles
Contaminated surgical instruments
Examples: