Today was the day we picked for filling up the biodigester with the cow dung. Really messy but fun experience. Prior to this, we had constructed a contraption with the pvc pipe, gas line, ball valve and one of the covers of the tank to route the gas while preventing leaks too.
During construction of your Bio-Digester, it is important you avoid leakage of air at any point as this would lead to waste of your gas, risk of explosion or the risk of air mixing with your final ,ethane which can be very dangerous while cooking or igniting in any form.
The first real task for the day was to go to the cow paddock which was found earlier to obtain the fresh cow dung to be used for the digester.
We made sure we got the fresh part and took about 100kg for the digester. On getting to the site for the digester, we set out to work. The cow dung when thick wouldn't be suitable for the digester so it has to be mixed with water to a pouring consistency. The ratio we used for mixing was 1 part dung to 1 part water, i.e fill a container halfway with water and complete it with dung then crush the big chunks so everything forms a slurry.
When this is done, pour it through the funnel into the drum. Continue till the drum is almost full with 20cm left between the tom and the surface of your slurry.
After this seal the biodigester, then clean up
Full Post:
https://peterbanigo.com/my-final-project-fabrication-of-an-anaerobic-biogas-digester/
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