C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
C05F 15/00 (2006.01) A01C 3/00 (2006.01) C05F 3/00 (2006.01)
Patent
CA 2111431
METHOD AND APPARATUS FOR PRODUCING SOLID FERTILIZER FROM LIQUID SUBSTANCES SUCH AS MANURE FROM LIVESTOCK OR SLUDGE Background of the Invention: Field of the Invention: The invention relates to a method and an apparatus for producing solid fertilizer from liquid substances such as manure from livestock or sludge. Liquid manure production around the world is enormous. The escape of gases from liquid manure is not only malodorous but it also contributes to the global greenhouse effect and the much publicized ozone hole. Moreover, liquid manure is a danger to the groundwater when - in the old, time-honored way - the liquid manure, in its original form, is spread, as fertilizer on agricultural areas by spraying onto or other introduction into the soil. Similarproblems are associated with the immense worldwide production of sludge, for instance from water purification systems. There is accordingly a need for alternative methods that solve these problems associated with liquid manure and sludge in an environmentally appropriate manner and that at the same time enable the utilization, for soils used in agriculture, of the valuable substances contained in the fertilizer.
Fetherstonhaugh & Co.
Langenecker Bertwin
LandOfFree
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