| 摘要 |
<p>Liquid manure is separated into a thick slurry phase and an aqueous phase by a method wherein the manure in a first treatment stepis sedimented into a thick slurry phase containing the coarse solid matter components of the liquid manure and a primary aqueous phase, which is filtrated and discharged as aqueous phase with high N-content, when desired, or, passed to a second treatment step where it is mixed with a flocculant, and flocculated and sedimented into a secondary thick slurry phase, which is united with the thick slurry phase formed in the first treatment step, and a secondary aqueous phase, which is discharged as aqueous phase with moderate N-content, when desired, or passed to a third treatment step where it is subjected to ion exchange with a cation exchanger and discharged as aqueous phase with low N-content. The thick slurry phase is discharged from the first sedimentation step.</p> |
