New composting systems for rural refuse and sewage sludge.
نویسندگان
چکیده
منابع مشابه
Biodegradation of Lignocelluloses in Sewage Sludge Composting and Vermicomposting
Aims of the Study: The aim of this study was to determine the amount of lignin degradation and biodegradation of organic matter and change of biomass under compost and vermicomposting of sewage sludge. Materials & Methods: Sawdust was added to sewage sludge at 1:3 weight bases to Carbon to Nitrogen ratio of 25:1 for composting or vermicomposting. Lignin and volatile solids were deter...
متن کاملBehaviour of Enteric Micro-organisms during Composting of Rural Sewage Sludge
Introduction The spreading of sludge will only be possible on the condition of being able to guarantee to farmers and consumers the harmlessness of this practice. To minimize the potential risk for the health of humans and animals, it is necessary to coordinate sludge applications in time with planting, grazing or harvesting operations. For these reasons, sludge could not be applied continuousl...
متن کاملEffect of temperature on composting of sewage sludge.
The effect of temperature on the composting reaction of sewage sludge was investigated at 50, 60, and 70 degrees C. The total amount of CO(2) evolved and the final conversion of volatile matter were maximum at 60 degrees C., suggesting that the optimal temperature for composting was around 60 degrees C. The specific CO(2) evolution rate (moles of CO(2) evolved per hour per viable cell) was maxi...
متن کاملVariations of metal distribution in sewage sludge composting.
In the study, the variations of heavy metal distributions (of Cu, Mn, Pb, and Zn) during the sewage sludge composting process were investigated by sequential extraction procedures. The total content of Cu and Zn in the composted mixture increased after the composting process. Mn and Zn were mainly found in mobile fractions (exchangeable fraction (F1), carbonate fraction (F2), and Fe/Mn oxide fr...
متن کاملThe Agronomic Value of The Sewage Sludge of Tenerife. Composting
One of the most effective ways of recycling the organic and mineral fractions of sludge from the treatment of domestic wastewater is to compost the sludge with the organic fraction of domestic refuse. In the present study, a compost on a semi-industrial scale was obtained from a mixture of domestic refuse and sewage sludge. The evolution of the different parameters throughout the process was no...
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ژورنال
عنوان ژورنال: Journal of Environmental Conservation Engineering
سال: 1984
ISSN: 1882-8590,0388-9459
DOI: 10.5956/jriet.13.853