SOLID WASTE

SOLID WASTE

• It is all the rubbish people generate.

Nature also generates solid waste

• Organic : Coming from plants or animals; by living organisms.

• Biodegradable :Able to be broken down by bacteria or other living organisms.

• When nature produces waste, it recycles it all!

BRANCHES

LEAVES

EXCREMENTS

DEAD ANIMALS

THE CYCLE OF MATTER

• Biodegradable – Able to be broken down by bacteria or other living organisms.

• Nature returns living organisms back to the earth after they die. As the organisms decompose, the nutrients they contain are broken down and returned to the soil, where they are available to be used by future plants and animals.

URBAN SOLID WASTE (PROBLEMS)

• People generates a lot of solid waste.

• Nature is not able to decompose everything.

• Not all the solid waste we generate is biodegradable.

BIODEGRADABLE: Organic waste

• Kitchen waste:

coffee grounds

fruit and vegetable peels

eggshells

What is done with Organic solid waste?

• COMPOST: Rich organic product created by organic waste. – It looks like soil.– It is rich in carbon and

nitrogen.– It is an excellent

nutrient for plants.

TOXIC

old medicines

oils

paints

RECYCLABLE

PAPER AND CARDBOARD

BOTTLES AND GLASS

PLASTIC AND CANS

What can we do?

3 R’s• REDUCE: Reduce the amount of waste we generate.

• REUSE: Reuse many things before we throw away.

• RECYCLE: Separate materials before throw them to the container.