PROBLEM TO BE SOLVED: To provide a system for the treatment of organic waste and a recycling system in which plastics or the like separated from raw refuse can be treated and the total operational efficiency can be improved without producing dioxins or carbon dioxide gas in a gas generator.

SOLUTION: The recycling system 30 is composed of the system 1 for the treatment of organic waste, a treating machine 31 for bottles and a treating machine 32 for cans. The system 1 for the treatment of organic waste is composed of a classifying device 2 to separate combustible materials from the organic waste put into the system, a composting facility 3 and a methane fermenting facility 4 where the organic waste from which the combustible materials are removed is supplied from the classifying device 2, a gas generator 5 where the combustible materials from the classifying device 2 are supplied, and a fuel cell 6 as a kind of cogeneration power generator equipped with a gas modifying device where the methane gas from the methane fermenting facility 4 and carbon monoxide gas and hydrogen gas from the gas generator 5 are supplied. The energy from the cogeneration power generator is distributed to the composting facility 3 and the methane fermenting facility 4.

COPYRIGHT: (C)2003,JPO

PROBLEM TO BE SOLVED: To provide a waste treatment system and a waste treatment method that can maintain a microbial reaction device in a state suitable for the reduction of molecular weight with microorganisms.

SOLUTION: This waste treatment system is provided with: at least one reforming device that hydrolyzes waste with vapor; a microbial reaction device that reduces, using microorganisms, the molecular weight of a reformed substance including at least a solid matter from the waste hydrolyzed by the at least one reforming device; a microbial reaction detection device that detects the state of the molecular weight reduction of the reformed substance in the microbial reaction device; and an adjustment device that adjusts the amount and timing of reformed substance supplied to the microbial reaction device on the basis of the value detected by the microbial reaction detection device.

SELECTED DRAWING: Figure 1

COPYRIGHT: (C)2022,JPO&INPIT

PROBLEM TO BE SOLVED: To reutilize foodstuff waste products containing much of salt-components and oil-components as feed for livestock, fertilizer, etc., by subjecting the waste products to recycling treatment.

SOLUTION: The foodstuff waste products containing the salt-components, oil-components, and moisture discarded from foodstuff factories are crushed by a disposer 2 and are subjected to a solid-liquid separation by a solid-liquid separating machine 8. The solid contents obtained by the solid-liquid separation treatment are dried by a drying machine 15 and a waste water is introduced into the disposer 2 and is utilized as washing water. The tail gas from the drying machine 15 is utilized as a heat source for heating the washing water and the washing water is introduced as warm water to the disposer 2 to wash the foodstuff waste products. Since the salt-components and oil-components of the foodstuff waste products are efficiently washed out, the foodstuff waste products are effectively recycled and reutilized as the feed for the livestock and others.

COPYRIGHT: (C)2004,JPO

PROBLEM TO BE SOLVED: To provide an organic waste treatment method capable of stably maintaining the concentration of solid matter in a substrate supplied to a fermentation tank at a concentration suitable for fermentation.

SOLUTION: An organic waste treatment method for anaerobic fermentation treatment of an organic waste including solid matter as a substrate supplied in a fermentation tank includes: a first step of measuring a solid matter concentration of a supplied substrate to be supplied to the fermentation tank; a second step of setting a dilution rate of the supplied substrate in a manner that an in-tank solid matter concentration having undergone anaerobic fermentation treatment in the fermentation tank becomes a predetermined target value; and a third step of diluting the supplied substrate to the dilution rate; wherein the dilution rate is set based on the following mathematical formula: in-tank solid matter concentration=solid matter concentration of supplied substrate×(1-decomposition rate of supplied substrate), dilution rate=in-tank solid matter concentration÷target value of in-tank solid matter concentration.

SELECTED DRAWING: Figure 4

COPYRIGHT: (C)2022,JPO&INPIT