"I see eyes in my soup": How Delivery Hero implemented the safety system for ...
FROM WASTE TO WEALTH.pptx
1.
2. = Biogas, which is mainly methane, is a gas
produced from the digestion of organic materials in
an oxygen – free environment (anaerobic
fermentation).
3. Household waste, especially from backyard
piggeries and poultries, are usually disposed in
open – dug pits w/c are messy, odorous and often
are breeding grounds for mosquitoes, flies, rats and
pathogenic bacteria. This system of waste disposal
threatens the ground water through the infiltration
of pollutants.
This scenario creates health hazards as well as
potentials for conflicts w/ neighbors.
4.
5. Methane, which is a main component of biogas,
provides cooking fuel for household use as well as
energy for other Gas – Operated appliances such
as: refrigerator, iron, and lamps. On a large scale,
this can even provide power to run generators to
provide electricity.
6. The digested waste from the system 1s 90%
pathogenic free and very high in nutrients, which are
vital for plant growth. As opposed to open
composing, nutrients from the waste are merely
broken down into simpler forms and are not
oxidized. This translates to its high value as an
organic fertilizer, soil conditioner and as a
geological pesticide.
7. How much do I stand to save if I have
a Biogas Digester?
There are various sizes of household – model
biogas digesters with different gas production potentials
and waste digestion capacity.
Table 1 shows digester sizes from 4 – 10 cm. m. with
corresponding gas potential LPG conversion and
livestock capacity.
Capacity
Digester
Size (M3)
Gas Production Equivalent
LPG/Month
(11 kg)
Hogs Cattle
Daily
(m3/day)
Monthly
(m3/mo)
4 - 12 3 4.0 0.5 – 1.5 15 - 45 2.11 tank
12 – 18 6 6.0 1.5 – 2.5 45 – 75 3.16 tank
18 – 24 10 8.0 2.5 – 3.5 75 – 105 4.22 tank
24 – 30 20 10.0 3.5 – 4.5 105 – 135 5.27 tank
