Power generation
I would like to add a 'post script' (p.s) to a 'letter to editor' published in the pages of a local English daily on 3rd May. As stated by the writer, both solar and wind sources of power generation does not need any conventional fuel, rather the fuel for this form of power generation is Allah's gift to mankind, available forever!
However, we must have back up batteries and inverters to store this power and put it back to our grid from the stored sources to supplement power supplies, when there is no sun and wind! This is where the use of another renewable source can and should be exploited for all times!
Come wind, sun or moon, be it night or day, the compulsory healthy bodily function of discharging 'urine' and 'excrement' has to be carted on regardless! This 'excrement', like cow dung, also produces methane gas. We can generate the gas in a 'biogas plant' built with bricks, cement and sand, and the methane gas (biogas) can run a gas engine coupled to an alternator (generating set), producing normal electric power round the clock!
This is the same conventional source of power that we distribute to every household and industry today. The fuel (methane, ) contributed by the waste of human beings, can be the free source of power forever! In terms of volumes, it will go on increasing, as our population grows, and more power will be needed, while availability of geological fuels like coal oil, or natural gas (methane) is finite and limited!
We should seriously go for 'excreta' based power generation projects all over Bangladesh. To begin with, Wasa's sewage line can be the first source of fuelling this project.
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