What are some alternative arrangements for sewage disposal? What are the advantages of on-site human waste technology? [3 MARKS]

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Solution

Each arrangement: 0.5 Mark
Onsite human waste technology: 1.5 Marks

The various alternative arrangements for sewage disposal are:
i) Septic Tanks
ii) Chemical Tanks
iii) Composting Tanks

In case of on-site human waste technology, the toilets do not require scavenging. Excreta from the toilet seats flow through covered drains into a biogas plant. The biogas produced is used as a source of energy.

So, on-site human waste technology has a two-fold advantage:
i) It disposes off the wastes.
ii) The biogas produced from these can be used as an alternative source of energy.

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