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Discussions about design, construction, use and implementation of dry composting toilets. Dry composting toilets separate urine and feces and use both as fertilizer. Feces are composted for at least 9 months killing all pathogens. Dry composting toilets prevent contamination of ground water, save water, reduce waste and produce useful fertilizers.
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1 | 2 | By geoffrey 1 year ago |
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Discussions about the production and use of rice husk ash cement, a pozzolana that can be combined with lime or ordinary portland cement to form a cementitious binder.
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5 | 18 | By Dan 1 year 2 months ago |
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5 | 10 | By geoffrey 7 years 11 months ago |
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28 | 76 | By geoffrey 1 day 3 hours ago |
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17 | 42 | By geoffrey 1 year 1 month ago |