JPS5855389A - Method of composting organic waste - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for composting organic materials by composting them in an aerobic fermenter.

The above method involves mixing a phonogenic Toro Qin material and a Hatsu # Shima material to promote its production, and supplying the mixture to a fermenter to produce an oxygen-containing gas such as SW saze or 9 Qi. The material is made into compost by being crushed by contact with the material.

In order to bring the above-mentioned mixed product into the fermentation tank, the conventional method requires only one #! The mixed material is deposited in a dense state, and as the thickness of the deposited layer increases, the ventilation resistance increases, so the amount of composting processed per unit time, that is, the processing efficiency. In order to improve this, equipment such as blowers that supply oxygen-containing gas may be built into larger buildings, or the fermentation tank may be made larger in plan with a shallow bottom to reduce the thickness of the sediment layer. However, there were disadvantages such as an increase in the initial cost in terms of power, an increase in running cost, and an increase in the site area.

In view of the above points, it is an object of the present invention to make it possible to improve processing efficiency without causing any of the above-mentioned disadvantages in terms of power or site.

Next, an embodiment of the method of the present invention will be explained based on illustrative drawings.
The mixed product is supplied to the mixing device*ts+ via the !, and the mixed product is supplied to the granulator N4+ to be acid-formed into granules.
The granular molded product of No. 7 is fed to the fermenter fII KP.

# II ill K
By supplying χ air, the air is treated almost silently by the activity of aerobic bacteria, and exhaust gases such as gas and excess air generated with the trap are discharged from the tank (6) via the exhaust pipe (8). While draining
The fermented product is taken out through the discharge path rll, and a part of it is passed through the return path (7) to the second hopper (!1) as the seed sludge.
K is supplied, and the remainder is left as is or subjected to post-processing such as drying, and then K[X is taken out to obtain 1 ft of compost as a product.

The granulation device (4) may extrude the mixed product in a string shape through holes and cut it into predetermined lengths, accommodate predetermined granular gVC and press it, or extrude the mixed product into strings through holes, or press the gVC into predetermined granular form. Various means can be adopted, such as supplying it onto a disk that is rotated by a cylindrical object and turning it into a spherical granule with a certain particle size as it rotates. It is something to do.

An example of the water content of the sewage sludge, seed sludge, and granular material is approximately 86 to aOS.

The seed sludge is about 60 to 80-1 and the particulate matter is about 66 to 45%, and when sewage sludge and seed sludge are mixed and supplied, the mixing ratio is such that the moisture content of the particulates is within the set range. It is set as appropriate.

In the above embodiment, as the seed sludge, the treated product fermented in the fermenter (6+) is used, but the fermented product processed for utilization, the sewage sludge, etc.
In short, various fermented products can be used as long as they can promote the fermentation of the sewage sludge to be composted or adjust the temperature, moisture, etc., along with its supply.

In order to supply the raw gas to the above-mentioned source #m ($1), it may be supplied by natural ventilation without using the blower (6).Also, instead of nitrogen IK, high purity oxygen gas may be used. The present invention is not limited to the composting treatment of sewage sludge as described above, but can also be applied to composting of sewage sludge, for example, sewage sludge, industrial wastewater sludge, waste collection of garbage residue, municipal garbage, etc. Applicable to the composting process of various organic lI & nests ◎In summary, the method for composting organic waste according to the present invention mixes organic *'a* with fermented material and converts it into granular or cylindrical rc After the aging process, the mixture is made into granules in an aerobic fermenter (1), so the thickness of the sedimentary layer increases. Even if the particles become large, a ventilation path is secured between the particles to avoid an increase in ventilation resistance.
1 liter device for supplying oxygen-containing gas such as a blower (-)
Fermentation tank +81t without becoming large
As a result, it is possible to avoid an increase in the amount of land on the site, and the processing efficiency for composting organic waste can be improved without causing any inconvenience in terms of power or site.

[Brief explanation of drawings]

, the drawing is a flow sheet 111s1 illustrating the implementation of the method for composting organic waste according to the present invention. TI)・・・・Issuing tank 0

Claims (1)

[Claims] A method for composting organic waste, which comprises mixing the organic waste with a fermentation product, processing the mixture into granules or cylinders, and then treating the mixture in an aerobic fermenter.