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| Germer, Jörn; Grenz, Jan; Sauerborn, Joachim. |
| While plant nutrient deficiencies are a major constraint to increasing crop yields in many rural parts of Sub-Saharan Africa, excess nutrients in organic wastes and wastewater cause environmental and hygienic problems in urban areas. We report on an ongoing research aimed at implementing principles of ecological sanitation on a university campus near Accra, Ghana. Alternative sanitation including dry urinals and separating toilets was installed in buildings. Pure urine, urine-water mix, greywater from baths and kitchens and faeces are treated and stored separately. Except for faeces, all materials are used to fertilise annual (urine) and perennial (urine-water, greywater) crops. Urine application significantly boosted maize and sorghum growth. Pathogens... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: Recycling; Balancing and resource management Composting and manuring. |
| Ano: 2007 |
URL: http://orgprints.org/9429/1/9429_Germer_Vortrag.pdf |
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| Schäfer, Winfried; Evers, Lars; Lehto, Marja; Sorvala, Sanna; Teye, Frederick; Granstedt, Artur. |
| The Biodynamic Research Institute in Järna developed at the farm Yttereneby a two phase biogas plant. The plant digests manure of dairy cattle and organic residues originating from the farm and the surrounding food processing units containing 17,7 - 19,6 % dry matter. A new technology for continuously filling and discharging the biogas reactor was developed and implemented. Digestion residues are separated into a solid fraction for composting and into a liquid fraction. The solid fraction is suitable for aerobic composting. Initial results show that anaerobic digestion and following aerobic composting of the solid fraction improves the nitrogen balance of the farm compared to mere aerobic composting. Composted biogas plant residues and effluent together... |
| Tipo: Conference paper, poster, etc. |
Palavras-chave: "Organics" in general Dairy cattle Recycling; Balancing and resource management Composting and manuring. |
| Ano: 2005 |
URL: http://orgprints.org/3459/1/3459.pdf |
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| Hansen, Martin N.; Birkmose, Torkild; Mortensen, Børge; Skaaning, Kent. |
| Risikoen for ammoniaktab under lagring er højere for bioforgasset og separeret gylle, men effektiv overdækning af gyllelagre begrænser effektivt tabet. Med et effektivt flydelag er tabet ens for behandlet og ubehandlet gylle. Bioforgasning og separering af gylle begrænser ammoniaktabet i forbindelse med gyllens udbringning, effekten er højst af separering. Bioforgasning og separering af gylle fører ikke til mærkbar begrænsning af lugtgener fra gyllelagre, lugtgenerne kan dog effektivt begrænses ved effektiv overdækning af lagre. Lugtgenerne i forbindelse med udbringning af gylle er lavere ved udbringning af bioforgasset og separeret gylle end ved udbringning af ubehandlet gylle. Bioforgasset gylle og separeret gylle giver en højere kvælstofudnyttelse end... |
| Tipo: Report |
Palavras-chave: Recycling; Balancing and resource management Composting and manuring. |
| Ano: 2004 |
URL: http://orgprints.org/3517/1/3517.pdf |
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