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| Kitchen Wastes Management of Bangladesh |
There are
many cities of Bangladesh. Dhaka, Chittagong, Sylhet, Rajshahi, Khulna are
largest of them. Millions of people are live there. Only Dhaka city there are
lived more then fifteen millions people and each day they produce over 4,000-5,000 tons of household waste. Dhaka City Corporation can lift only 50% of it. Some of it manages
by some private firms and NGOs. The rest remains on roadsides, in open drains
and in low-lying areas include canals and rivers. Often it blocks the drainage
system and creates dirty water’s flood in rainy season. This has a negative
impact on the city’s environment. Not only that but also DCC manage the wastes in open places that they lift. So, these
wastes pollute our environment all
time. This situation is more daunting in other cities of
Bangladesh.
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| Burning Wastes |
The
Government of Bangladesh thinks other way to manage these wastes. Like as kitchen wastes based hit power plants where produce electricity. Apparently
may be this is very impressive decision.
But when you think deeply than you may realize how self-destructed
decision this is. When this project started and burns these wastes it produces lots
of smoke. Can you imagine what happened to our environment?
There are
great way to manage these wastes. Bio-gas plant is the greatest way to
manage these wastes. Many of us know what is biogas? Biogas typically refers to a gas produced
by the biological breakdown of organic matter in the absence of oxygen. Organic
waste such as dead plant and animal material, animal feces, and Kitchen Waste can be converted into a
gaseous fuel called biogas. Biogas originates from biogenic material and is a
type of bio-fuel. Biogas can be used in anaerobic digesters where it is
typically used in a gas engine to convert the energy in the gas into
electricity and heat, Biogas can be
compressed, much like natural gas, and used to power motor vehicles. We use
this gas fuel for power generator, who supplies power for our plant. From this
plant we also get huge compost fertilizers as bonus. This compost fertilizer
distributes our farmer as a reasonable price. This may increase our crop field’s
bio-circulation.
Our
Government may establish easily mega plants to manage the kitchen wastes of
our cities. For this plant no need foreign technology. This may easily do by
our local technology.
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| Household Wastes Management Plant |
Input
Section: - Here input
the household wastes that collected from city.
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| Rolling Belt |
Selection
Section:- The
wastes are move by a rolling belt to slicing blade. Some workers select the non-rotting
(non-putrescent) things like as plastic goods, canes, polyethylene, papers and
others, and remove them carefully
Slicing
Section:- A rotor
blade slices the rotting wastes to small pieces.
Mixing
Section:- The
sliced wastes are mixed with water here and send them to digester tank.
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| Digested & Gas Chamber |
Digester & Gas Chamber Section:- Here digest the wastes and produce bio-gas.
Generator
for Produce Power:- The
produced biogas are used to run a power generator for plants power. The
extra gas is store in cylinders for other uses.
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| Compost Drying Fields |
Compost
Drying Fields:- The compost fertilizer that get by-produce will be dry in the drying field. This process may take 30-40 days. It
can do early by using the stored biogas.
Packaging:-
After drying the compost then it is
packed into bags and distribute to farmer at a very cheap rate. It must
discourage our farmer to use chemical
fertilizer in their crop fields.
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| Compost Packaging |
The overall benefits of this plant are we must keep our environment safe.
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