A Typical WtE plant |
The average person generates about 2 kg of waste per day . Thats a hell lot !!! But the good news is that we can re-use this waste into clean ,renewable , money-saving energy !!!
The waste-to-energy plant normally generates energy , most commonly electricity , by the incineration of wastes.
It is a form of energy recovery.
The first WtE plant was first established way back in 1975 at Massachusetts .
The working of the WtE plant can be categorized into six categories . Rhetorically :
I ) INSPECTION and TRANSPORTATION : In this , the refuse is weighed and inspected . Only the required municipal waste is accepted carefully.
II) COMBUSTION : Hydraulic ramps feed the refuse into integrated furnaces where it burns .
III) ELECTRICITY GENERATION : High pressure steam is driven into a turbine generator to produce electricity .
IV) PURIFICATION OF FLUE GAS : Here , harmful green-house gases and oxides of nitrogen are removed to prevent pollution.
V) EXTRACTION OF FERROUS METALS : Iron and Steel are seperated from the ash by magnetic-ore seperation technique.
VI) RECOVERY OF ASH : The final product is then collected and carefully land-filled .
The poster created by me and a frnd which won a prize at a poster presentation in my college !!! |
This method of incinerating the waste is a relatively old method of waste-to-energy conversion. Nowadays new technologies such as GASIFICATION , PLASMA ARC GASIFICATION , PYROLYSIS and THERMAL DE-POLYMERIZATION are being more effectively used .
Now the big question is WHY THIS WHEN WE CAN LANDFILL easily ???
Well , the answer is that this process is more feasible and more environmental friendly .
WtE plants produce less POLYCHLORINATED DI-BENZODIOXINS than conventional homes !!! Now ...thats something !!!
Morever ,
1 Metric tonne of MSW ---> produces ---> 1 Metric tonne of CO2 , because MSW has the same mass fraction as CO2 itself , .....................................................BUT , on land-filling ,
1 Metric tonne of MSW ---> produces ---> 62 Cubic Metres of CH4 , which has twice the green-house capability than CO2 !!!! ....
HMMMMM....THINKING MATTER ...ISN'T IT ???
For a more precise knowledge abt the working of such a WtE plant .....tune into the video at http://www.thinkgreen.com/waste-to-energy .......
NOTE : let it load..then ....press the "+" button at the building which shows "video"
WASTE IS NOT A WASTE UNTIL IT IS WASTED !!!!
Simply ...... SAVE THE EARTH !!!!
2 comments:
nyc work.... :D
;) ...thanks !!! at last i have a gr8 supporter !!!
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