C - Chemistry – Metallurgy – 05 – F
Patent
C - Chemistry, Metallurgy
05
F
C05F 3/00 (2006.01) C02F 1/52 (2006.01)
Patent
CA 2507388
The invention relates generally to a process to treat domestic animal manure, such as pigs and swine, so that the treated manure can be environmentally acceptable. More particularly, the present invention relates to a process of de-phosphatation of manure comprising the steps of i) adding by-products of electrolysis and foundry (BPEF) to liquid manure, ii) stirring the manure- containing BPEF, iii) letting the manure-containing BPEF that was so stirredstand for a time sufficient for the manure to separate into a solid fraction and a liquid fraction, the solid fraction depositing in the manure pit; and iv) separating the liquid and solid fractions. The liquid fraction contains less than 50 % of total phosphorus initially contained in the manure, the phosphorus being found in the solid fraction.
L'invention concerne de manière générale un procédé de traitement de lisier d'animaux domestiques, p. ex. porcs et cochons, visant à rendre ledit lisier écologiquement acceptable. Elle concerne plus particulièrement un procédé de déphosphatation de lisier, qui comporte les étapes consistant à : 1) ajouter des sous-produits d'électrolyse et de fonderie (BPEF) au lisier liquide ; 2) mélanger le BPEF contenant le lisier ; 3) laisser reposer le BPEF mélangé et contenant le lisier pendant une durée suffisante pour que le lisier se sépare en une fraction solide et une fraction liquide, la fraction solide se déposant dans la fosse à lisier ; et 4) séparer les fractions liquide et solide. La fraction liquide contient moins de 50 % du phosphore total contenu initialement dans le lisier, le phosphore se trouvant dans la fraction solide.
Parent Gaetan
Simard Regis
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Sa Majeste La Reine Du Chef Du Canada - Agriculture Et Agroalime
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