Title:
【発明の名称】動物排泄物,水肥及び下肥を処理する方法及び装置
Document Type and Number:
Japanese Patent JP2545041
Kind Code:
B2
Abstract:
The invention concerns a method of processing animal excrement and liquid manure (fluid-solid materials) in order to utilize the ammonia in the material in non-volatile, chemically bound form as fertilizer, and the disposal by combustion of the polluting constituents of the material which are not easy to react chemically, or residues arising from the process, such as residual ammonia, methane gas or strong-smelling gaseous substances such as skatoles and mercaptans. The method is characterized in that the non-bonded and/or dissolved ammonia in the material is converted, by the addition of carbon dioxide and gypsum, into a non-volatile nitrogenous fertilizer which is readily absorbed by plants. Exhaust air from animal-husbandry facilities is preferably used as the source of carbon dioxide. Strong-smelling substances, residual ammonia and methane and other volatile substances from the exhaust air are removed from the material usually in a stripping procedure by passing oxygen, preferably in the form of air, and in particular exhaust air from animal-husbandry facilities, into the material. Such substances are combusted over a thermal catalyst, or in combustible gas, when they leave the installation.
Inventors:
HARUFUTERU GEORUKU
Application Number:
JP50576393A
Publication Date:
October 16, 1996
Filing Date:
September 16, 1992
Export Citation:
Assignee:
HARUFUTERU GEORUKU
International Classes:
B01D53/74; C05C3/00; C05D3/00; C05F3/00; F23G7/06; B01D53/38; F23G7/07; (IPC1-7): C05C3/00; B01D53/38; B01D53/74; C05F3/00; F23G7/06
Attorney, Agent or Firm:
Osamu Nakahira