JP2652114B2 - Method for promoting fermentation of organic sludge - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for accelerating fermentation of organic sludge, which does not use any fermentation machine or fermentation tank, and provides the same fermentation effect as using the fermentation machine or fermentation tank. A large amount of fermented organic sludge can be obtained in a very short time and very cheaply.

[0002]

2. Description of the Related Art The applicant of the present invention has provided a recycling greening method called PMC (PMC) method (see Japanese Patent Publication No. 4-45613 and Japanese Patent Application Laid-Open No. 4-261914). The PMC method is a method of mixing organic waste such as public sewage sludge and livestock dung and charcoal powder, or the organic waste and incinerated ash generated from various industries such as incinerated ash of pulp slag generated during pulp production. , Fermented to produce an organic "growth base material", using this growth base material and an adhesive material called "Pmzai (registered trademark)", a plant fertilizer made mainly from konjac flour, This is a method of forming a plant growth base in the greening work. And
As a means for producing the organic "growth base material", a kiln type (horizontal) fermenter is used, and a mixture of organic waste such as public sewage sludge and livestock manure and incineration ash is supplied from one input port. The mixture is charged and heated for about two days while sending high-temperature hot air into the fermenter, and the mixture heated to about 50 ° C to 60 ° C is discharged from the outlet at the other end. Then, the fermentation is completed after about 2 to 3 months of accumulation at the accumulation site.

[0003]

The above-mentioned PMC method substitutes black soil and mountain sand used as a vegetation base material in the conventional method, and also contains a large amount of fertilizer. In addition, it is useful and useful as a modern construction method that can recycle organic sludge and caps that destroy nature by collecting sand. On the other hand, in the above-mentioned PMC method, in the fermentation promotion of organic waste, the inability to adjust the water content determines the period of completion of fermentation. Then, after the fermentation treatment, it is necessary to accumulate in the sedimentation site for a period of two to three months until it is ripe. Therefore, expensive equipment investment for installing the fermenter, fuel costs for sending high-temperature hot air into the fermenter are required, and it takes about two months to obtain a growth base material that can be used as compost. It takes a long time, so if you do not stock a considerable amount, there is often a risk that it will not be possible to use a large amount of growth base material due to landslides such as typhoons, heavy rain or landslides is the current situation.

[0004]

SUMMARY OF THE INVENTION Therefore, the present invention is provided to solve the problems of the conventional method and to achieve the object of the invention. That is, the present invention relates to a method for accelerating fermentation of organic sludge, wherein at least pulp slag high temperature incineration ash or incineration ash obtained by carbonizing waste wood generated during the production of thinning materials or construction materials is used as woody incineration ash in public sewage sludge. While maintaining the temperature at about 100 ° C, the mixture was stirred and mixed at a mixing ratio of 50:50 with a tire shovel car, and the self-heating temperature of the mixture of the public sewage sludge and the powdery high-temperature incinerated ash was reduced to 40 ° C.
水分 80 ° C., while adjusting the moisture content and deodorization while maintaining the self-heating temperature of the mixture at around 40 ° C. to 80 ° C. Immediately thereafter, it has air permeability and a diameter of 1 m, height Natural fermentation is carried out in a relatively short time, packed in a bag for storage and transportation capable of storing a mixture of 1 m and a volume of about 1 cubic rice.

[0005]

The incineration ash of the powdery pulp slag immediately after being discharged from the incinerator has a high temperature of about 300 ° C. The temperature of the incinerated ash that has been discharged or is in contact with the outside air decreases, but the temperature of the incinerated ash has not decreased much, and at least about 100 ° C. has been maintained. When stirring and mixing at a mixing ratio of 50 volumes, the water content of the sewage sludge and the like is adjusted, and considerable deodorization is performed due to the properties of the incinerated ash. Then, the mixture sufficiently stirred was immediately permeable to the air, packed in a stacking / transport bag capable of storing a mixture of 1 m in diameter, 1 m in height and 1 cubic rice in capacity for 10 days. ~
If it accumulates for about 15 days, the outside air permeates moderately into the bag, assists in the promotion of fermentation, and reaches full maturity.

[0006]

Next, an embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a schematic side view showing the step of accelerating the fermentation of organic sludge according to the present invention. In the figure, reference numeral 1 denotes a public sewage sludge treated in a sludge treatment plant, which is an organic waste.
2 is a woody high-temperature incinerated ash, specifically, a paper mill B
In addition to the high-temperature incinerated pulp slag generated during pulp production, carbonized incinerated ash produced by burning thinned wood and scrap wood generated during the production of construction materials is used. In the case of the high-temperature incinerated ash of the pulp slag, even after the time of being discharged from the paper mill and transporting it to a fermented product manufacturing plant at a long distance by a truck such as a dedicated truck and arriving, the temperature is around 100 ° C. Need to maintain the temperature.
Reference numeral 3 denotes a 50:50 mixture of the sewage sludge 1 for one dedicated truck and the woody high temperature incinerated ash 2 including pulp slag.
The mixture was stirred by a tire excavator C at a mixing ratio of 40 ° C. to 80 ° C. in this mixed state.
Have self-heating. 4 is a bag body having air permeability to accommodate stuffed with mixture 3, the housing can be volume was set at 1 m ³ per bag to a capacity enough to penetrate the outside air into the mixture inside, and transverse The diameter of the surface is set to about 1 m and the height to about 1 m.

[0007]

[Specific process example 1] In a paper mill, powdery pulp slag high temperature incineration ash 2 immediately after being discharged from an incinerator is about 30%.
It has a high temperature of about 0 ° C. Then, although the temperature of the incinerated ash discharged and touching the outside air decreases,
It maintains its own heat of at least around 100 ° C even after the arriving time at the distant fermented product manufacturing plant by transport vehicle has passed. This incinerated ash 2 was transported from the sewage treatment by a dedicated truck to one public sewage sludge 1 and the bucket was used with a tire shovel car C in a mixing ratio of 50:50 using a tire shovel car C, and it was turned back and forth uniformly. Stir and mix. As a result, the temperature of the high-temperature incinerated ash is further lowered by a kind of heat exchange action, but the temperature of the stirred mixture 3 is maintained at least about 40 ° C to 80 ° C, and the moisture contained in the mixture is adjusted. In addition, the intense foul or off-flavor odor of large amounts of public sewage sludge is considerably deodorized due to the properties of the powdered pulp slag high-temperature incineration ash.
Then, the mixture 3 having been sufficiently stirred is immediately packed in a bag 4 having air permeability, and the mixture is slivered for about 10 to 15 days.
And is covered with a tent 6 if necessary. The outside air permeates the bag from the periphery of the bag to an appropriate extent to promote fermentation. In this case, the fermentation promoting is further improved by keeping open the opening 4 ₁ of the bag so as not to spill.

[0009]

[Specific process example 2] When incinerated ash is to be obtained from woody high-temperature incinerated ash or scrap wood generated during the production of thinned wood or construction materials, these are put into an incinerator that burns them and burned in large quantities. Ash is produced at the same volume as that of the high-temperature incinerated ash of the pulp slag in step 1 before the temperature is lowered.

[0010]

According to the present invention having the above-described structure, the powdery high-temperature incinerated ash or woody high-temperature incinerated ash discharged from the incinerator into public sewage sludge, and the waste generated during the production of thinned wood or construction materials The wood incineration ash is stirred at a mixing ratio of 50:50 while maintaining the self-heat of at least about 100 ° C, and the public sewage sludge is stirred while the self-heat of about 40 ° C to 80 ° C is maintained. The moisture is adjusted, and the sewage sludge is also deodorized due to the properties of the high-temperature incinerated ash. Of the above-mentioned high-temperature incinerated ash, the use of scrap wood generated during the production of thinned wood or construction materials opens up the way of mass use of those that have no use even if they are generated, and the expansion of applications has particularly stimulated the local industry. It also has the effect of contributing to the development. Then, a mixture of sewage sludge and powdered pulp slag high-temperature incineration ash, woody high-temperature incineration ash, or high-temperature incineration ash obtained by carbonizing waste wood generated during the production of thinned wood or construction materials is immediately permeable to a large-volume gas. By accumulating a bag filled with the mixture in a plurality of stages, which can be stored in a bag that can be accommodated, the outside air permeates moderately into the bag in which the air is accumulated, and natural fermentation is promoted and eventually. Fermentation is completed. The fermented product after the natural fermentation can be shipped together with the bag, so that the operation can be omitted.
Therefore, according to the present invention, fermentation of public sewage sludge does not require any fermenter or fermentation tank, and also requires an aeration (supply of oxygen by stirring and mixing the mixture back and forth) during fermentation. Natural fermentation is promoted even if it is not necessary, and it is only 10 days to 1
It is possible to obtain a large amount of fermented organic sludge suitable for a growth base required for complete slope revegetation in a short period of time in which it is accumulated for about 5 days.

[Brief description of the drawings]

FIG. 1 is a schematic view showing a step of accelerating fermentation of organic sludge according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Public sewage sludge 2 Powdery high-temperature incineration ash, such as pulp slag 3 Mixture of 40 degreeC-80 degreeC 4 Bag with air permeability 5 Sunoko 6 Tent C Tire excavator

Claims (1)

(57) [Claims] Claims: 1. Maintaining at least about 100 ° C. of pulp slag high temperature incinerated ash or incinerated ash obtained by carbonizing waste wood generated during the production of thinned wood or construction material as woody incinerated ash in public sewage sludge. 5 with a tire excavator while
The mixture was stirred and mixed at a mixing ratio of 0:50, and the self-heating temperature of the mixture of the public sewage sludge and the powdery high-temperature incinerated ash was set to 40 ° C to 8 ° C.
0 ° C. and the mixture is heated to 40 ° C.
While maintaining the temperature at around 80 ° C, moisture adjustment and deodorization were carried out. Immediately thereafter, it had air permeability and was 1 m in diameter and 1 m in height.
m. A method for accelerating fermentation of organic sludge, wherein natural fermentation is carried out in a relatively short time after being packed in a bag for accumulation and transportation capable of storing a mixture of about 1 cubic rice.