Reuse of urine
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This page in under construction. Meanwhile, see the links under references:
Why reuse urine for food production: my summary
- Motivation for valorising urine
- stop flushing gold!
- Energy consumption of water treatment plants, huge investments to maintain sewer system
- Drinking water to flush toilets: #!!!
- Same performance as conventional NPK fertiliser
- Available everywhere
- stop flushing gold!
- Risks and advantages, compared to conventional fertilisers
- Pathogens: major part removed after storage (high pH, NH4+ Temp)
- Heavy metals: less than in chemical fertilisers and in animal manure
- Micropollutants (pharmaceutical): yes, there is some risk: some metabolites of medicine may be taken up partially by some plant parts, it's very variable [ref: see Mendeley]. And apart from exceptions, MP aren't degraded simply in anoxic storage [VUNA publication] But in comparision, there's more antibiotica and other medicine found in animal manure, in average in Europe [ref!]
- Source-separation and collection
Related projects at Hackuarium
References
Key resources
- http://akvopedia.org/wiki/Application_of_Stored_Urine
- https://en.wikipedia.org/wiki/Reuse_of_excreta
- http://www.who.int/water_sanitation_health/wastewater/gsuww/en/ WHO (Editor) (2006): Guidelines for the safe use of wastewater excreta and greywater. Volume IV. Excreta and Greywater Use in Agriculture. Geneva: World Health Organisation.
- http://www.sswm.info/category/implementation-tools/water-use/hardware/reuse-agriculture/fertigation > see § on urine fertigation
[+ other links from sustainable sanitation]
References used
Many many