2. INTRODUCTION
It is a waste that generated as a result of the ordinary day-to-day
consumptions of households
It includes:
Remains of food, plastics, bottles, papers.
4. Output of daily waste depends on
Dietary habits
Life style, living standards.
Degree of urbanization and industrialization.
Glass, metals, plastics, textiles.
5. EXAMPLE
Organic waste: Flowers, Vegetables and fruits, Kitchen waste, leaves
Toxic Waste: batteries, paints, old medicines and other chemicals.
Recyclable Waste: glass, cardboard, paper, plastics, metals.
Soiled Waste: nappies, cloth soiled with body fluids, animal waste.
10. COLLECTION AND SEPARATION
Collect by trucks or van
Collect at one area the waste for treatment and disposal
11. composting
• The moisture content of 55–60 per cent and
airspace of 20–30 per cent in the bed of
biodegradable waste
• Temperature rise from 35°C to 55–65°C
achieved within 2–3 days.
• Thermotolerant fungi
• Thermophilic bacteria
• Actinomycetes
• Are the predominantly active
microorganisms at this stage.
12.
13. Vermicomposting
Vermicomposting is the process of using earthworms and microorganisms to turn kitchen waste/ organic
solid waste into black and nutrient-rich.
Vermicomposting involves the stabilization of organic solid waste through earthworm consumption, which
converts the material into worm castings.
Vermicomposting is the result of the combined activity of microorganisms and earthworms.
Microbial decomposition of biodegradable organic matter occurs through extracellular enzymatic activities
(primary decomposition) whereas decomposition in earthworms occurs in the elementary tract by
microorganisms inhabiting the gut (secondary decomposition).
Microbes such as fungi, actinomycetes and protozoa are reported to inhibit the gut of earthworms.
14.
15. Type of waste Approximate Time to Break Down
Organic waste Up to 2 weeks
Cigarette Butt Up to 5years
Aluminium can Up to 500 years
Plastic Bags Up to 1000 years
Tyres Up to 2000 years
Glass Up to 1 million years
Aluminium foil Never
