5.5 Solid Domestic Waste(SDW)

Sources of SDW Solid domestic waste is garbage or

trash which has no value to the producerUSA = 3.5 kg SDW per dayEU = 1.4 kg SDW per day

Paper -16%Glass – 2%Metal – 3%Plastics - 18% Organic Food waste – 40%

Disposal of wasteLandfill:

Main method of disposal

Hazardous waste and domestic waste is buried underground

Disposal of WasteIncinerator

Burn waste at high temperatures

Heat produced is often used to drive generators as steam energyReferred to as waste

to energy incineration

Causes air pollution, acid rain, global warming

Ways to manage wasteReduce, Reuse,

Recycle Reduce- Use less of

the product that produces waste

Reuse- Use objects many times (no disposable products)

Recycle- Use old products to create new ones

Ways to minimize wasteCompost Organic Food Waste!!Vermicomposting : Vermicomposting is the

process of having redworms and other decomposer organisms process our organic waste and turn it into a great natural fertilizer (called vermicompost).

Vermicomposting When compared to soil, worm casts also

contain5 times more nitrogen7 times more phosphorous 1.5 times the calcium11 times more potassium3 times more exchangeable magnesium