Abstract:
A process of recycling biological waste includes the steps of dehydrating pieces of biological waste by heat to remove water content in the biological waste until the water content of the biological waste is less than 20% by original weight; rapidly freezing the biological waste to at least -35 DEG C by providing a predetermined amount of liquefied nitrogen around the biological waste for a predetermined period of time until the biological waste completely becomes a brittle substance; crushing the frozen biological waste to a crumb and powder form substance; and drying the substance until the water content thereof is less than 5% by original weight to form a bacteria free recyclable substance. Thereby, the volume, size and weight of the biological waste is reduced by recycling to a bacteria free, crumb and powder form, recyclable substance which is adapted to be used as a kind of animal feed and raw material of plant fertilizer.
Abstract:
A liquid fertilizer produced from a combination of worm castings and liquid biological waste is provided. The liquid fertilizer is characterised by high microbial activity and a carbon to nitrogen ratio of at least 7 to 1.
Abstract:
The stabilization of bio-organic sludges such as those derived from sewage, meat works or dairy works effluent, against putrefication or microbial decomposition is disclosed. The stabilization is achieved by adding a bio-organic material, such as coir fibre, straw, flax and/or ground bark and/or a source of carbohydrate. Preferably, the final concentration of water in the product is at least 15 % by weight water, with a preferred upper limit of 70 % by weight water.
Abstract:
The present invention, which is directed to a method of manufacturing pellet type organic crude fertilizer and raw compost material by utilizing the pressurizing and kneading effects of a rotary screw apparatus, and which can render unnecessary a long term fermentation treatment and equipment, such as a boiler and its management system, is characterized in that the method includes the steps of introducing a raw vegetable fiber material and cut organic material to be treated into a rotary screw-carrying casing, pressurizing and kneading these materials, tearing and smashing the same materials by an interaction between the pressurizing and kneading operations and the edge portions of a plurality of grooves formed in the inner surface of the casing and extending in the axial direction thereof, whereby the raw vegetable fiber material is planted in the organic material to be treated, and pelletizing the resultant product by extruding with a cutter the same product in a predetermined amount at a time from molding ports of the casing.