초록 ▼

In the treatment of livestock waste, liquid to be aerated is pumped from a storage container, holding pond or lagoon and drawn through a magnetic air inductor inlet then pumped into a conical chamber towards an outlet port at the narrow end of each of a series of conical chambers. Air is drawn into

In the treatment of livestock waste, liquid to be aerated is pumped from a storage container, holding pond or lagoon and drawn through a magnetic air inductor inlet then pumped into a conical chamber towards an outlet port at the narrow end of each of a series of conical chambers. Air is drawn into the chamber by pressure differential and intermingled with the liquid and waste to be treated to hydrolyze the fines as the material passes through the chambers. A conically shaped expansion cone attached as an extension of each chamber outlet port permits further expansion and intermingling of the air and liquid waste mixture. An open-ended sleeve is attached in surrounding relation to the outlet of each discharge cone so that the air/liquid stream from each cone is directed axially through its sleeve, each sleeve having a spiral baffle plate extending along the interior length thereof to further promote agitation of the mixture and most complete aerobic digestion of the fines.

대표청구항 ▼

In the method for conversion of animal waste material into useful feed values wherein the animal waste material is flushed from a collection area to a separation stage whereby to separate liquid waste and fines of a selected size from the animal waste material, the steps comprising: advancing the se

In the method for conversion of animal waste material into useful feed values wherein the animal waste material is flushed from a collection area to a separation stage whereby to separate liquid waste and fines of a selected size from the animal waste material, the steps comprising: advancing the separated liquid waste and fines from said separation stage to a waste treatment container; pumping the separated liquid waste and fines in said container under pressure through a submerged aeration chamber and creating a magnetic field in association with said aeration chamber to remove magnetizable particles from the liquid waste and fines as they are pumped into the aeration chamber; injecting air into the aeration chamber whereby to aerate the liquid waste and fines sufficiently to hydrolize the fines into single cell protein; advancing the intermixed air, liquid waste and fines from said aeration chamber through an open-ended mixer tube whereby to induce the introduction of additional liquid waste and fines into said tube under the influence of the reduced pressure of the intermixed air, liquid waste and fines as it exits from said aeration chamber into said mixer tube; and recycling the liquid waste and single cell protein from the waste treatment container for flushing additional animal waste from the collection area to the separation stage for introduction of the single cell protein into the animal waste material. In apparatus for the conversion of animal waste in a confinement facility into useful feed values wherein said animal waste is flushed from the confinement facility with aerated liquid waste pumped from a waste treatment container and passed through a separation stage to remove moisture from the liquid waste together with solid fines contained in the liquid waste and the liquid waste and solid fines so removed being returned to said waste treatment container, a submersible air induction apparatus submerged in said waste treatment container for aeration of the liquid waste therein and hydrolization of the single cell protein in the fines present in the liquid waste so aerated, the combination therewith comprising: impeller means having an inlet end and a discharge end and magnet means having an open-ended inlet passage sleeve normal to and in communication with said inlet end intermediately between opposite ends of said sleeve whereby to create a magnetizable field across said inlet end to remove magnetizable particles from the liquid waste and solid fines in said container which are drawn through opposite ends of said inlet passage sleeve by said impeller means, at least one injector assembly at said discharge end of said impeller means having first and second hollow, generally conical members, said first member having an injector inlet end receiving the liquid waste and fines under pressure from said discharge end of said impeller means and generally nozzle-shaped discharge means for discharge of the liquid waste and fines under pressure from a discharge end of said first member, said second member disposed in outer concentric surrounding relation to said discharge end of said first member including a venturi portion downstream of said first member continuing into an outwardly flowing expansion outlet, and air injecting means communicating with each said second member for introducing air into said second member, said discharge means creating a region of reduced pressure in said venturi portion to induce the flow of air from said air injecting means into and through said second member for intermixture with said liquid waste and fines whereby to aerate the liquid waste and fines sufficiently to hydrolize the fines into single cell protein, an elongated, open-ended, hollow sleeve including means mounting one end of each said sleeve in proximity to said expansion outlet whereby to direct the intermixture of air, fines and liquid waste from said expansion outlet through said sleeve and discharge said intermixture of air, fines and liquid waste through an opposite end of said sleeve into said waste treatment container, and means for recycling the liquid waste and single cell protein from the waste treatment container for flushing additional animal waste from the confinement facility to the separation stage for introduction of the single cell protein into the animal waste material.