Introductory terms of solid waste management in short. One can get an overall concept about solid waste with its different parts in short.
Besides how the waste occurs in environment and what are the way to minimize it are also discussed.
3. Introduction
We human depend on many things on our
environment to satisfy our widest needs. And in the
process of our development we generate a lot of
things which are generally no use to us and we simply
discard them. We also buy packet food, bottle drinks,
canned food etc. But what exactly we do after having
it. We just throw them as well as for the left vegetable
or food in the kitchen.
4. What is Waste ???
๏ Any object which are no longer any use
to us is called waste.
5. Why do we waste things ??
๏ It is no more useful
๏ Its unwanted
๏ Its defected
๏ Its old or worthless
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17. Solid Waste
Solid waste are defined as all the discarded
solid material from municipal, industrial and
agricultural activities.
Any solid material which have reached its end
of life or discarded by the owner is solid
waste.
18. Types of solid waste
๏ Municipal solid waste
๏ Industrial waste
๏ Hazardous waste
๏ Construction & demolition
20. Solid Waste Management
Solid waste management is the process of
treating solid waste and offers variety of
solutions for recycling items that donโt
belongs to trash.
It is about how garbage can be used as a
valuable resources.
21. Wastes can be managed by
1. Landfills
2. Incineration
3. Recovery/Recycling
4. Plasma gasification
5. Composting
6. Waste to energy
22. Landfills
๏ This process focuses attention on
burying the extravagance in land.
๏ Used to eliminate odors & dangers of
waste.
๏ Availability of land.
๏ Air & Water pollution increased.
23. Landfill includes
๏ A clay base
๏ A plastic liner
๏ Daily soil cover
๏ Top clay layer (applied when landfill is
full)
Landfill creates
๏ Methane gas
๏ A liquid called leachate
24. Incineration
๏ Burning of solid waste in high
temperature so as to convert them into
residue and gaseous products.
๏ It decreases solid prodigality to 20%-
30% of thatโs original volume.
๏ Also known as thermal treatment.
๏ Produce air pollution.
๏ Toxic ash.
25. Recovery & Recycling
Resource recovery is the process of
taking useful discarded items for a
specific next use.
By this, waste convert into form of
useable heat, electricity or fuel.
Recycling is the process of converting
waste products into new products.
26. Plasma gasification
๏ Plasma is a highly ionized gas.
๏ Waste materials breaks the molecular
bond at a high temperature exceed
12600 degree F.
๏ This provide renewable energy source.
27. Composting
๏ Using soil microorganism to decompose
organic matter.
๏ Easy & natural bio-degradation process.
๏ Normally used organic farming.
๏ Especially useful for food waste,
basically at house level.
๏ Slow process requiring a lot of space.
28. Waste to energy
๏ This process involves converting of non-
recyclable waste items into useable
heat, electricity or fuel.
๏ It can also help to reduce carbon
emission by offsetting the need for
energy from fossil sources.
29. E-waste
๏ E-waste or electronic waste is a term of
electronic products that have become
unwanted, not working , obsolete &
reached the end of their useful life.
๏ It has been found that only a mobile phone
can pollute 40k gallon of water.
๏ E-waste contains arsenic, silica, mercury,
lead.
๏ 70-80% recyclers exports e-waste
overseas.
30. Conclusion
๏ Any type of waste should exert at
minimum level.
๏ Disposal should be in specific areas.
๏ Waste management should be in
specific & regular manner.
