Mada za sehemu hiiSafety In Our EnvironmentMada 10
Waste disposal
Waste refers to materials that are not needed. Waste disposal is the process of getting rid of waste materials in a safe and effective manner.
Waste can be classified according to its state:
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Solid waste Solid waste includes hard materials such as household garbage, mining waste, plastics, paper, glass, scrap metal, used tires, empty cans, and construction waste.
Solid waste
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Liquid waste Liquid waste includes substances like urine, water from bathrooms, and water from the kitchen after washing utensils. Liquid waste can also come from industries, such as chemical liquid waste.
Liquid waste
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Gaseous waste This is waste in the form of gases, including ammonia, carbon dioxide, and sulfur dioxide gases from materials. Lead from petrol in motor vehicles is also considered gaseous waste. Gaseous waste is a major risk factor for both acute and chronic respiratory diseases.
Gaseous waste from an industry and vehicle
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Sludge waste Sludge waste is a thick, soft, and wet material, usually viscous, such as human waste and industrial waste, which contains between 30% to 70% water. Organic waste, such as food remnants, paper, and cotton clothes, is biodegradable and can be decomposed by bacteria and other living organisms. Non-biodegradable waste, such as plastics, glass, and metal, does not decompose naturally.
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Waste disposal Waste disposal refers to the activities involved in the collection, transportation, processing, re-use, and other measures that help eliminate waste. Proper waste disposal reduces the negative effects of waste on human health, animal health, and the environment.
To better manage waste, the following principles can help:
- Reducing the amount of waste we produce (e.g., carrying a woven basket instead of buying plastic bags).
- Reusing items instead of throwing them away (e.g., using an empty margarine container to store sugar).
- Recycling waste materials (e.g., broken glass can be melted and reused to make new glass).
Proper waste disposal is essential for maintaining health and environmental quality. It helps to:
- Provide a clean and pleasant environment Proper disposal prevents the accumulation of waste, which can be unsightly and unpleasant.
- Eliminate or reduce foul odors Decomposing waste can release bad smells; proper disposal prevents this.
- Minimize the spread of infections Waste, especially organic and medical waste, can harbor disease-causing organisms. Proper disposal reduces the risk of infections.
- Prevent accidents Disposing of sharp objects, broken glass, and hazardous materials properly helps avoid injuries and environmental hazards.
- Burning Waste such as paper, plastic, cartons, and empty milk packets can be burned to ashes.
- Burying
Burying is used for disposing of inorganic refuse, such as empty insecticide containers, used batteries, broken bottles, pots, and plates. Burying may take the form of:
- Pit latrine: Sewage in the pit is decayed by bacteria. When full, the pit is covered with soil, and a new latrine is dug.
- Tipping and landfills: Waste is collected by trucks and taken to dumping sites. A landfill is a place where solid waste is buried in the ground.
- Animal feeds Organic refuse like vegetable peels, fruit scraps, and cabbage leaves can be fed to animals such as goats, sheep, cattle, poultry, and pigs. Bones are dried and ground into powder for dog food.
- Compost manure Organic refuse is separated from inorganic refuse and placed in a one-meter-deep pit to decompose. To reduce the smell and health hazards, a thin layer of wood ashes or soil is used to cover the refuse. The decomposed material is used by farmers as compost manure, which enriches the soil.
- Recycling Recycling turns waste materials into useful products. Examples include converting paper into tissue or newsprint paper, treating worn-out tires for reuse, and crushing old glass bottles to make new ones.
- Incinerating Incineration is the process of burning waste materials until they turn into ash. It is often used for hazardous materials like healthcare waste. Protective clothing is essential during the process to avoid contamination from hazardous fumes.
- Garbage collection In urban areas, local authorities handle garbage collection, providing refuse bins placed at strategic locations in towns. Garbage disposal is managed through landfills and incineration.
- It provides breeding grounds for disease-causing organisms (e.g., empty containers left after rain become breeding places for mosquitoes and cockroaches).
- Poor waste disposal causes air pollution, leading to respiratory problems.
- It can cause accidents at home (e.g., fruit and vegetable peels on the floor can cause slips, or broken glass can cause cuts).
- Organic waste decomposition can create unpleasant smells and attract pests.
- Poor disposal can lead to epidemic diseases such as cholera.
- It can harm wildlife and domestic animals (e.g., cows eating plastic bags can suffocate or block their digestive systems).
- Blocked drainage systems can lead to flooding.
- Use cloth instead of paper to wipe surfaces like windows and furniture. It's cheaper in the long run and reduces the amount of paper waste.
- Invest in a set of cloth or woven shopping bags to reduce the need for plastic bags.
- Buy rechargeable batteries and a battery charger instead of disposable batteries.
- Collect and reuse plastic containers for storage.
- Initiate awareness campaigns in your community on proper waste disposal methods.
- Use plastic that can be recycled or reused, and buy products made from recycled materials.
Symbol of recycled material
- Bad habits, such as dumping waste on footpaths or roadsides, and excessive packaging (e.g., wrapping a candy in multiple layers of plastic).
- Inadequate disposal facilities make waste disposal challenging.
- Failure of local authorities to enforce proper waste disposal practices and punish those who violate them.
- Poor infrastructure and settlement planning hinder effective waste management.
- Population growth and urbanization.
- Increased consumption of disposable packaging and food.
- Technical advancements leading to higher production of industrial and electronic waste.
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