In the Eco-Park in New Town, there is no underground sewerage line in most parts. So we are experimentally setting up two pilot Biological Toilets (Bio-toilets) that would not need water or sewer connection. Upkeep and maintenance will be part of the contract to the firm that will set it up. Here is a picture as appearing in their documentation:
I sent an email to them seeking further information.
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Here is a clipping from today's Ebela: