Abstract: A method for producing liquid fertilizer is characterized in that raw material made of human waste consisting of feces and urine is made to come into contact with heated animal oil, plant oil, mineral oil or a mixture of these oils under a reduced pressure, and water contained in the raw material is evaporated from the raw material and moisture made of evaporated water is collected, cooled and liquefied to produce liquid fertilizer.

Abstract: A method is disclosed for producing filler suitable for addition to foods. Raw material comprising skins, meat, internal organs and, bones of animals, are boiled with steam, charged into a cooker which contains a pre-heated animal or vegetable oil followed by, closing the cooker in an air-tight manner and, heating the raw material while reducing the pressure in the cooker in two stages. The raw material is separated from the oil in a pressure reduced condition and pulverized.

Abstract: This invention relates to a method of producing protein-rich forage or nitrogenous fertilizer as a commercial product from fowl droppings, swine dung, cow dung and the like by charging said ordure into a heated animal, fish or vegetable oil, subjecting the mixture to a smooth dehydrating treatment under the two-step reduced pressure conditions starting initial by with a limited pressure reduction and later increasing the degree of pressure reduction, and thereafter squeezing oil out of the treated mixture to thereby produce said forage or fertilizer. Said method is conducive to the prevention of malodor pollution caused by said livestock excrements and can also eliminate the wasteful use of fuel required in the incineration treatments.