This conference brings together experts from different sectors – water/sanitation, agriculture, soil, energy and health – to share experiences in the new field of Terra Preta Sanitation (TPS). TPS is being promoted as integrated sustainable solution to address poor sanitation, food insecurity, and soil degradation. It is inspired by the discovery of the anthropogenic ancient soils in the Amazon called Terra Preta.
- Re: How should we call the excreta-derived product of a composting toilet or a UDDT? Do we need a new term? - by: goeco July 30, 2016I would suggest that our use of the term vermicomposting refers to the process of worms digesting organic material into humus. Eventually compost must become humus, but my use of the term "compost" refers to a wider range in states of organic matter decomposition. Humus being a subset of compost, a later stage whereby the organic C has stabilised. […]
- Re: How should we call the excreta-derived product of a composting toilet or a UDDT? Do we need a new term? - by: hajo July 30, 2016Dean, then vermi-composting is actually not 'composting' but 'making humus', thus we use the wrong expression??!! ... or it is a bit of compost after being feces/organic matter and before being eaten by the worms??
- Re: UDDT versus Pour Flush (with vermi-composting) versus ???: which are sustainable sanitation technologies and systems for peri-urban areas in Africa? - by: hajo July 30, 2016Dear Dean, I expressed in my previous post (11.4) the expectation that the vermi-composting would reduce the emptying cycle of the pour flush twin pits from 2 years to up to 5 years. So there we agree. Soaking away urine, black water or grey water takes place with most of the on-site systems which are currently in use here: pit latrines soak away urine; (pou […]
- Re: What do we know about odorous gases from composting toilets (or from composting in general)? - by: goeco July 30, 2016Both humus and compost are derived from organic matter. For our purposes, humus could be defined as having less "active" carbon than compost. It still contains organic C but this C is more stable (something to do with half-lives and mineralisation rates of soil organic carbon) and because humus isn't a ready food source for organisms to respir […]
- Re: UDDT versus Pour Flush (with vermi-composting) versus ???: which are sustainable sanitation technologies and systems for peri-urban areas in Africa? - by: goeco July 30, 2016Hajo, certainly worms will significantly reduce the bulk of the feces, which drying alone will not do. You'll definately use more water if vermicomposting the waste, so having a good soakaway is imperative. This means more care with water tables than if the liquid was only urine. That said, I doubt that percolating urine into the ground next to toilets, […]
- Re: How should we call the excreta-derived product of a composting toilet or a UDDT? Do we need a new term? - by: goeco July 30, 2016
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