| 摘要 |
<p>PURPOSE:To perform agitation, etc. in the stage of digestion treatment without any driving power by subjecting a mixture of waste consisting of blood juice, broth and froth to an anaerobic digesting treatment to generate gaseous methane and utilizing part of the gas as gas pressurizing water in the treatment of waste liquid. CONSTITUTION:A mixture D consisting of blood juice A, broth B and froth C supplied into the 1st digesting tank 3a is transferred into the 2nd digesting tank 3b and while the mixture is agitated by the digesting gases diffused from diffusion pipes 7, 8 in the respective digesting tanks, the mixture is subjected to an anaerobic digesting treatment at 30-50 deg.C by steam pipes 5, 6. After the digesting gases generated by such treatments are passed through desulfurizers 9, 9 and are removed of sulfur compds., the gases are stored in a gas holder 10. The greater part of such gases are used as a heat source for a boiler 11 and part thereof are used as a gas pressurizing water in a pressure flotation stage for treating the waste liquid of processing.</p> |
