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公开(公告)号：EP1494971A1
公开(公告)日：2005-01-12
申请号：EP03711766.0
申请日：2003-04-08
发明人： Blais, Jean-François , Mercier, Guy , Belanger, Genevieve , Chartier, Myriam , Leblanc, Danielle
CPC分类号： A01C3/00 , C02F1/24 , C02F1/56 , C02F3/00 , C02F3/12 , C02F9/00 , C02F2103/20 , C02F2301/08 , C02F2303/02 , C05F3/00 , Y02A40/205 , Y02P20/145 , Y02W10/15 , Y02W10/37
摘要： A method of treating animal manure yielding a final liquid fraction and solid fractions whereby the final liquid fraction has a suspended solids (SS) content of about 3 g/L or lower comprising subjecting at least a part of said manure to a first biological passive flotation step in a flotation unit having a hydraulic residency time (HRT) of about 4 to about 24 hours with a polymer to yield a first flotation solid fraction and a first flotation liquid fraction, said method comprising a further treatment. An apparatus for treating animal manure comprising a main flotation unit having a HRT of about 4 to about 24 hours, said main flotation units including skimming means for removing floating solids from at least a portion of the surface of the manure and dredging means for removing settled contaminants from at least a portion of the bottom of the tank, whereby at least a part of said manure is directed to the main flotation unit wherein it is separated in a first floating solids fraction, a second liquid fraction and a first settled solids fraction and wherein the second liquid fraction has a SS content of about 3 g/L or lower.
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