JPH0678630B2 - Recycling greening base formation method - Google Patents

Description

Detailed Description of the Invention

[0001]

[Field of Industrial Application] The present invention is applied to artificially constructed bare land, slopes such as hillsides destroyed by disasters or rocks of inorganic recessive soil, or soils, bases, park greening at golf courses, etc. In order to form a vegetation base to be installed prior to the so-called slope greening work, where plants are introduced to protect the trees from being planted, industrial waste, domestic waste or public sewage sludge is produced with pulp dregs that are produced when paper is produced. By adding incinerated ash of (paper sludge) at a high temperature, it is intended to be recycled and used as a base material for vegetation in slope greening work.

[0002]

2. Description of the Related Art At present, one of the common problems faced by local governments is the processing of industrial and household wastes, which are generated in large quantities on a daily basis.

Above all, the sludge generated from public sewage is increasing year by year, and the treatment includes burning, landfilling,
Although it is carried out by dumping in the ocean, it is a serious social problem because it costs a lot of money and there is a fear of environmental destruction and secondary pollution.

Therefore, the present applicant has previously filed Japanese Patent Application No. 63-2.
No. 24131, incinerator ash of burning waste is added to coating fertilizer or compost and konjak flying powder, and the mixture is stirred and mixed, and water is added at the time of nozzle injection using a mortar spraying machine to a predetermined thickness in the ground. We provided a greening foundation forming method by recycling by spraying to form a foundation layer.

[0005] As a result, in the slope greening work, the top soil and mountain sand of the mountainous area leading to environmental damage, which has been conventionally used as a method for obtaining the vegetation base material, or the foreign-made peet moss which are thin and expensive are used. There is no need to use it, and permanent greening was obtained just like conventional base materials.

[0006]

By the way, in the above invention provided by the present applicant, non-health substances and heavy metals are contained in industrial waste and public sewage sludge, which are sludge compost for vegetation base materials. ing. Currently, the criteria (Prime Minister's Ordinance) regarding "industrial waste including metals" to be discarded at the landfill site are as follows.

[0007]

[Table 1]

On the other hand, in the above invention provided by the applicant of the present invention, the results of elution test and the content of heavy metals contained in sludge incineration ash used as a growth base material are as follows.

[0009]

[Table 2]

[0010]

[Table 3]

Therefore, after the vegetation base material using the incineration ash containing heavy metals is sprayed on the slope to form the vegetation base layer, the vegetation base layer collapses due to the occurrence of a natural disaster such as a typhoon, a heavy rain or an earthquake. It is considered that there is a risk of being washed away and flowing into water sources or fields or farm ponds and contaminating them.

[0012]

Therefore, according to the present invention, harmful substances such as heavy metals are eluted outside when a vegetation base layer is formed by spraying a growth base material in a conventional slope revegetation work by recycling. The purpose of this is not only to do so, but also to make it possible to carry out construction in an optimal state using water retention, air permeability, and soil improvement effects as vegetation base material.

In order to achieve the above object, the present invention is a method for forming a recycle greening base, in which organic sewage sludge or domestic waste or industrial waste is incinerated ash of high temperature pulp slag just taken out from an incinerator. After adding and holding at around 60 ℃, fermented and matured to produce granular or powdered compost, and mixing the compost with flying powder produced during the purification of konjak to make the base material, It is put into a spraying machine, and when water is added and mixed at the time of nozzle injection by compressed air of a compressor, it is sprayed so that a base layer having a predetermined thickness is formed on the ground surface.

[0014]

EXAMPLES Examples of the method for forming a recycle greening base according to the present invention will be shown below. Figure 1 is a base material production plant diagram,
FIG. 2 is a system diagram showing a treatment process for obtaining incinerated ash of pulp slag in the method of the present invention.

In FIG. 1, the base material 3 of the vegetation base layer 2 formed by spraying on the ground surface 1 is manufactured by mixing the compost 4 and the konjak flying powder 5. And the compost is
Sewage sludge or organic waste 6 such as household waste or industrial waste 6 was added with incinerator ash 7 of high-temperature pulp slag to ferment it.
It is produced by aging and granulating or powdering. In addition, the above-mentioned pulp ash incineration ash 7 is generated when paper is manufactured in a paper mill, and is usually excreted, and pulp slag such as lignin, hemicellulose, and pectin is incinerated in a kiln-type incinerator. The incineration ash of this pulp slag, which is produced, has an extremely low water content and effectively functions as a moisture conditioner. The high temperature incineration ash that has just been taken out from this incinerator is used.

In FIG. 2, the outline of the steps until the incineration ash of the pulp slag 7 is formed is divided into a chemical pulp step and a mechanical pulp step. First, in the chemical pulp process, wood chips 20 obtained from domestic or foreign countries are temporarily stored in a storage tank 21, and then put into a wooden kettle 22, and the wood chips are melted in a thick manner while applying pressure with chemicals and steam in the kettle. To pulp, wash with a washer 23, remove only the fibers, and
After removing the dust at 24 and further applying it to the bleaching machine 25, it is passed through the screen 26 again to the paper making machine 27 to produce fine paper pulp. On the other hand, in the mechanical pulp process, the log 27 is conveyed to the storage area 28, the bark is removed by applying it to the drum barker 29, and then the wood is crushed with a wood grinder 30 to separate the fibers, and further passed through a screen 31. After bleaching with the bleaching machine 32, it is again passed through the screen 33 and then with the paper machine 34 to produce pulp for newsprint. The wood-based fibers discharged from the paper machines 27 and 34 as slag pass through the clarifier-35 and then to the dehydrator 36, and finally burn the pulp slag in the kiln type incinerator 37 to incinerate the ash. Is discharged.

Next, the concrete manufacturing process of the compost 4 is as follows. For example, if the organic public sewage sludge 6 is put into a fermenter 8 equipped with a fermenter, and along with this, the incinerator ash 7 of a high temperature pulp slag at 100 ° C or higher, which has just been taken out from the incinerator, is put in. , Mixed with the above sludge, the temperature of the sludge is lowered by heat exchange action due to the low temperature of the sludge, but by completely aging at least around 60 ° C,
A relatively free-flowing sand-grained compost 4 is obtained. And, this compost is organic, and the fertilizer component (NP.
K and other minerals), it also has the function of neutralizing acidic soil and exerts a soil improvement effect. Mixing the high-temperature pulp slag incineration ash 7 with sludge or the like can be used as fermentation heat, and can promote fermentation, and in the conventional method, a burner can be used to retain the fermentation heat. Although it was used, it does not require a burner for temperature control. Further, the incinerated ash 7 of pulp slag contains about 10% to 15% of organic carbon, and has a deodorizing action or a washout preventing action due to adsorption of non-health substances such as heavy metals.

Next, sewage sludge is mainly sludge and other raw mud produced from public sewers, and domestic waste is cooking scraps of vegetables and fish from households, other raw garbage, and industrial waste. The thing is a large amount of seafood handled for business,
There are processing residues of meat and the like. Those processed to are suitable. In the figure, 9 is a mixer for adding konjak flying powder 5 to compost 4 and stirring, 10 is a mortar spraying machine for spraying the sprayed base material 3 obtained by the mixer 9, 11 is a sprayed base material 3 Of the spray hose 12 to the tip nozzle part 13 of the spray hose 12, and 14 is a water hose 12 'at the nozzle part.
Power sprayer for adding water to the water tank 15 through,
Reference numeral 16 is a generator for the belt conveyor to the spraying machine 10 and for driving the power sprayer 17, and 18 is a pump for pumping water from a water source 19. The above-mentioned konjak flying powder is a plant-based adhesive material, and has both a stabilizing effect on the spraying material and a fertilizer effect.

In the construction of the present invention, the compost is charged into the mixer 9 by a belt conveyor, a shovel or the like, and further, the konjak flying powder 5 is charged and stirred in the mixer. Spraying area of slope = 100 square meters, spraying thickness t = 10
The composition in cm is as follows. (Materials used) (quantity) ○ Compost (pulp slag incineration ash and organic sludge mixed fermentation and aged product) 15,300 0.0 l ○ Konjak flying powder (Pemzai = registered trademark) 255.0 kg

The sprayed base material obtained by the above mixing ratio is put into the mortar spraying machine 10 by the belt conveyor, and is sent under pressure to the nozzle part 13 by the compressed air of the compressor 11, and at the same time, water is supplied from the water source 9 to another water hose. It is sent to the nozzle part through 12 'and sprayed on the ground 1 together with the sprayed base material 3 to form the vegetation base layer 2. The vegetation base layer 2 described above has a vegetation base layer provided with a greening net on the surface thereof according to the intended use (Japanese Patent Publication No. 62-21937 “Patent No. 1416457”).
No. ”), wastewater treatment method (Japanese Patent Publication No. 62-1050,“ Patent No. 1396451 ”, (Japanese Patent Publication No. 1-4012,“ Patent No. 1522804 ”) and a log prone construction method (Japanese Patent Laid-Open No.
No. 2-182316).

[0021]

EFFECTS OF THE INVENTION Since the present invention has the above-mentioned constitution, after adding high temperature pulp slag to organic public sewage sludge, industrial waste and domestic waste, it is fermented and aged to obtain granules or powder. By eliminating compost, it is no longer necessary to collect and procure black soil, mountain sand, or foreign-produced peat moss, which were conventionally used as vegetation base materials, and to prevent environmental damage and stabilize quality, and reduce construction costs. be able to.

Next, the compost in the present invention is mixed with the incinerated ash of the pulp slag, and thus has the effect of a moisture conditioner, the effect of fermentation, and the effect of deodorizing. That is, the incinerated ash of pulp slag has an extremely low water content, and is effective as a moisture adjusting material. Also, by mixing high temperature incinerated ash of 100 ° C or higher with low temperature organic sludge, domestic waste or industrial waste, the heat of incineration of the pulp is lowered by heat exchange action, but at least around 60 ° C is maintained. By setting it so that it can be used as fermentation heat, the fermentation can be promoted, and at the same time, it is not necessary to use the gas burner conventionally used for temperature control, so the gas burner Although the flames of No. 1 touched the sludge and killed the microorganisms in its vicinity, the composting effect for fermentation and produced base materials is high by preventing the killing of the microorganisms.

Further, since the incinerator ash of pulp slag is used in large quantities in a high temperature state immediately after being taken out from the incinerator, it is not necessary to dispose of the ash of pulp slag, and the temporary storage for the disposal is performed. There is no need to install equipment or manpower, and the effect of two birds with one stone is achieved.

In addition, the incineration ash of pulp slag contains 10% of organic carbon.
Since it contains about 15% to 15%, it has the same effect as dust coal, such as deodorizing effect, prevention of washout by adsorption of non-healthy substances such as heavy metals, and effectiveness as a base material for greening. No need to mix pulverized coal.

Further, the base material is prepared by mixing the above-mentioned compost with the flying powder produced during the purification of konjak, and the base material is put into a spraying machine, and water is added and mixed when the nozzle is jetted by the compressed air of the compressor. However, by spraying on the ground surface to a predetermined thickness, it is only necessary to construct the foundation for slope greening once, there is no accumulation and concentration of heavy metals, and the components of fertilizer are sufficient for vegetation. Because it is, it is ideal for growing green areas.

And instead of the conventional use of mountain sand and black soil or of peat moss and its analogues as soil conditioner to form the base material, for organic sewage sludge and other wastes. It is obtained by adding combusted manure by adding incinerated ash of pulp dregs that has air permeability and sufficient oxygen supply, fermenting and aging to make compost, and adding konjak fly powder. Then, the above-mentioned base material is put into a mortar spraying machine and mixed, and the nozzle spraying machine is used to spray water to a predetermined thickness on the slope while mixing water at the time of spraying the nozzles, which is effective for greening. An excellent base layer can be obtained.

In addition, organic industrial waste and domestic waste can be effectively used for forming a vegetation base in slope greening work, and it is possible to digest waste sludge generated from public sewers without waste. it can. In addition, the problems that were difficult to dispose of can be solved, the applications can be expanded, and this is a new useful method for forming a recycling greening foundation of this kind.

[Brief description of drawings]

FIG. 1 is a diagram of a base material production plant.

FIG. 2 is a system diagram showing a treatment process for obtaining incinerated ash of pulp dregs.

[Explanation of symbols]

 1 Ground 2 Vegetation base layer 3 Base material 4 Compost 5 Flying powder 6 Organic waste 7 Incinerator ash of pulp dregs 8 Fermenter 9 Mixer 10 Sprayer 11 Compressor 12 Spraying hose 13 Nozzle part (1)

[Table 1] (2)

[Table 2] (3)

[Table 3]

Claims (1)

[Claims] 1. An organic sewage sludge or domestic or industrial waste is added with incinerator ash of a high temperature pulp slag that has just been taken out from an incinerator, and the mixture is maintained at about 60 ° C., then fermented and aged to be granulated. Alternatively, a compost that has been pulverized is produced, and the base material is prepared by mixing the compost with the flying powder generated during the purification of konjak, and the base material is put into a spraying machine, and water is added when the nozzle is jetted by the compressed air of the compressor. A method for forming a recycle greening base, which consists of spraying so that a base layer with a predetermined thickness is sprayed onto the ground surface while mixing and mixing.