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e Present Problems in Refuse Disposal Treatment
Information Bulletin No 7 July 1959
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acid addition aeration aerobic agriculture air holes amounts anaerobic analysis application ashes bacteria Bad Kreuznach Baden-Baden biological boron carbon cellulose chemical composting plant composting process costs crops Dano decomposed decomposition depth determined dewatering digested sludge domestic wastes dumping effect erosion experiments fungi grinding ground refuse hammermill heat Heidelberg humic acids humus humus content hygienic incineration increase Information Bulletin IRGR lignin material mature mesophilic method microorganisms mixture moisture content Mull Netherlands nitrogen nutrients operation organic matter organic substances oxygen particles pathogens peat piles plots possible problems production raw refuse refuse and sludge refuse compost refuse disposal refuse-sludge compost requirements samples Schiedam self-heating sewage sludge sewage treatment showed stable manure Stadtetag Straub temperature thermophilic tion trace elements treatment plant urban refuse utilization Verwertung vineyards viniculture windrow composting windrows Winter rye yield zones Zurich