JP2001314882A - Biological cleaning material - Google Patents

Biological cleaning material

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Publication number
JP2001314882A
JP2001314882A JP2000174425A JP2000174425A JP2001314882A JP 2001314882 A JP2001314882 A JP 2001314882A JP 2000174425 A JP2000174425 A JP 2000174425A JP 2000174425 A JP2000174425 A JP 2000174425A JP 2001314882 A JP2001314882 A JP 2001314882A
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JP
Japan
Prior art keywords
material
microorganisms
biopurification
water
useful
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP2000174425A
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Japanese (ja)
Inventor
Kazuyuki Iwasaki
和之 岩崎
Original Assignee
Dreams:Kk
有限会社ドリームス
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by Dreams:Kk, 有限会社ドリームス filed Critical Dreams:Kk
Priority to JP2000174425A priority Critical patent/JP2001314882A/en
Publication of JP2001314882A publication Critical patent/JP2001314882A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/10Biological treatment of water, waste water, or sewage
    • Y02W10/15Aerobic processes

Abstract

PROBLEM TO BE SOLVED: To provide a biological cleaning material as a fixing carrier of useful microorganisms for environmental cleaning being an urgent subject, by using a natural material which is floated and sunk in water, accumulated on the surface of the earth, mixed with soil, easy to handle on a pollution side, used for fixing various microorganisms, not decomposed by microbial action, harmless if discarded, fixed various microorganisms, has good water absorbability and excellent transpiration properties, is chemically stable, excellent in heat resistance and heat insulating properties, easy to obtain, low in cost and present in large quantities, and a method for manufacturing the same. SOLUTION: The biological cleaning material is manufactured by a method wherein perlite or silas balloons and rhyolite type pumice material are molded into a powdery, particulate, lumpy or granular shape to obtain a granular molded article and this granular molded article is immersed in a suspension of microorganisms useful for biological cleaning to adsorb or bond these microorganisms and this molded article is dried in air to manufacture the biological cleaning material which is porous, disposable and harmless.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD [0001] The present invention provides a biopurification material disposable for bioremediation for environmental purification and environmental restoration of a contaminated site, and a method for producing the same.

[0002]

2. Description of the Related Art Techniques for utilizing various capabilities of microorganisms for application to preservation of the global environment have been developed. Conventionally, it is a technique for immobilizing useful microorganisms such as mold, yeast, bacteria, etc., utilizing the action of enzymes as biocatalysts of the microorganisms, or utilizing the products and actions of each step generated by biochemical reactions. It may be the action of decomposing extracellular enzymes (extracorporeal enzymes) to be taken up as food, or may be a product in the cells. The ecology of a wide variety of microorganisms is still present in many unknown fields. The existence of microorganisms has been clarified not only on the ground surface but also near deep seawater volcanic zones and deep groundwater of 7 to 800 m. Life on the planet is animals, plants, and microorganisms. Elucidation of the ecology and function of microorganisms is expected to continue in the future.

[0003] At present, there are already urgent issues concerning environmental protection, such as refractory chemicals, refractory substances of biological origin, crude oil and waste oil.
It is necessary to purify the environment at the site already contaminated with heavy metals. The development of material civilization has created many compounds with new structures in the natural material cycle, and the massive consumption of petrochemical fuels has a significant impact on the environment. And chemical hazards such as lakes and groundwater pollution. Bio-purification is a technology for direct purification of polluted sites and environmental restoration. Utilizes biochemical reactions of microorganisms. However, the number of microorganisms capable of processing a specific hardly decomposable substance by a biochemical reaction is limited to some extent. In the decomposition process, enzymes of microorganisms that are different in chain from macromolecules to low molecules act to decompose and detoxify. Complex contamination purification requires complex microbial preparations in which various types of microorganisms coexist. It is important to search for microorganisms useful for biopurification, ecology, function development, and nourishment. If appropriate microorganisms are discovered, biopurification uses living organisms of microorganisms, so natural circulation-type environment restoration becomes possible. Biopurification is relatively inexpensive and allows for rapid and flexible on-site treatment with a short generation change time for microorganisms.

[0004] As a carrier for immobilizing microorganisms, porous materials of plant type, polymer type and inorganic type have been used. Physical factors such as temperature, light, osmotic pressure, pressure, and vibration as microbial environmental factors, chemical factors such as nutrients, water, pH, oxygen, chemicals, and biology such as antagonism, symbiosis, and competition that are important for biopurification There are various factors, and the microorganisms grow in a state in which all these factors are suitable. Microbes are said to stop growing or die when one of these factors is in poor condition. For example, algae that coexisted with corals died when the seawater temperature rose by 2 ° C, causing coral bleaching. As a material for immobilizing microorganisms used for biopurification, a substance which is harmless to the environment even if it is not collected is convenient. An inorganic porous material existing in nature is convenient. Recently, porous ceramics have attracted attention as biopurification materials. For example, there are cases where incinerated ash of sewage sludge or molten slag is used, but there is a problem that it is expensive and heavy. Also, there is no evidence that it is truly safe and harmless.

As a method of restoring the environment of a contaminated site, there is an artificial neutralization detoxification method using a chemical. However, there is already experience in causing environmental pollution with new persistent compounds that were unexpected in the progress of material civilization. He has also experienced the abuse of pesticides and chemical fertilizers, disrupting soil microbial balance. The use of chemicals can cause new environmental pollution and should be avoided as much as possible.
In addition, a high-molecular-weight microorganism-immobilized carrier has been developed, but should be avoided as long as the microorganisms are not completely decomposed, because they involve recovery. There is also a biodegradable polymer PVA carrier for immobilizing specific microorganisms, but it is not possible to cope with complex and complicated purification of contamination due to limited applications. Biopurification materials that can immobilize many types of microorganisms and fuse harmlessly with the natural environment are needed.

[0006]

As a form of a contaminated site treated by bioremediation (bioremediation), in the water environment, eutrophication, groundwater contamination, hardly decomposable substances, and harmful substances such as the sea floor and lake bottoms are considered. This is due to accumulation, heavy metal pollution, waste oil, waste oil ball pollution, microbial contamination of red tide and blue water, etc.
It is a chemical hazard problem such as heavy metal pollution, leachate pollution from waste burial facilities, soil erosion, and deterioration in the balance of microorganisms due to imbalance in microorganisms. It is important that pollution remediation and environmental restoration are realistically addressed on site, and secondary pollution should not be caused. Biopurification materials that are harmless and harmonious with the natural environment are required, and must be carefully selected from natural materials.

[0007] The biopurifying material of the present invention floats on water, sinks in water, stays on the surface of the earth, intersperses in the soil, is easy to handle at contaminated sites, and has a wide variety of microorganisms colonized by the action of microorganisms. It does not decompose, is harmless when discarded, weathers and eventually returns to the soil. Good water absorption when immobilizing microorganisms by adsorption or adhesion, excellent transpiration, chemically stable, excellent heat resistance and heat insulation, easy to obtain, low cost, and present in large quantities It is a natural material. Provided is a biopurification material for environmental purification, which is an urgent issue, and a method for producing the same.

[0008]

To achieve the above object, the present invention has the following arrangement. The bio-purifying material according to the present invention is a porous material mainly composed of a natural glass material that has been heated and foamed, and has a pore diameter of several μm to 100 μm and a bulk specific gravity of 0.2.
2.02.0 g / cm 3 , powdered, granular, or lump products are used. Closed cells and continuous pores are mixed, impregnated with a suspension of microorganisms useful for biopurification, drained and dried, and supported in the form of spores and endospores, or sprayed with the suspension to fix live bacteria It is characterized in that it is a carrier that has been converted.

The natural glass materials are pearlite composed of obsidian, perlite and pine stone, or volcanic glass of shirasu balloon composed of shirasu and volcanic ash, and pumice of rhyolite volcanic eruption materials, and are mainly composed of natural glass. And These may be used alone or as a mixture. It is preferable to select one having a low content of titanium oxide having an antibacterial action.

[0010] The biopurifying material of the present invention is used in the form of powder, granules, or agglomerates, or by using a powdery product and granulating a clay mineral as a binder to form granules, pellets, or the like. Can be provided according to the type of contaminated site. The clay mineral as the binder to be formed is preferably bentonite, and is preferably blended at about 30% by weight. When 10% by weight of organic fine powder of grains or grain husks is added as an auxiliary material, granulation and formability are improved. Since natural glass material has a balloon-like closed cell body and a continuous air hole body due to foaming, it is possible to provide a material that floats on water, sinks in water, and floats in water by mixing.

An aerobic or facultatively anaerobic microorganism immobilized on the biopurifying material of the present invention, which forms spores,
Actinomycetes and bacteria having spores can be used by immobilizing the microorganisms by immersing the cells in pure suspension cultured and acclimatized, fixing the microorganisms, drying with aeration, carrying spores or endospores in a dormant state, and storing and using them. In addition, live bacteria useful for biopurification may be used by spraying a suspension on site. Water treatment at contaminated sites can spread biopurification materials to the surface, into the water, and to the bottom.

[0012] Charcoal becomes a carbon source of soil bacteria, and useful soil bacteria proliferate. Perlite and pumice have high water retention and porosity, and can supply oxygen and moisture to the roots. A useful soil bacterium can be immobilized on charcoal or fertilizer and the biomaterial of the present invention, and provided as an agricultural material.

The method for producing a bio-purifying material according to the present invention is a method for producing a pearlite composed of obsidian, perlite and pine stone, or a volcanic glass material of a shirasu balloon composed of shirasu / volcanic ash, and a rhyolite-based volcanic ejecta. Pumice mainly composed of vitreous material is washed, heated and sterilized, and natural resources are used as the main material. Granules are formed by using powders, granules, or agglomerates, or by mixing powders with clay minerals. Immersed in a microbial suspension useful for biopurification,
It is a porous material that adsorbs microorganisms, is air-dried, carries spores or endospores in a dormant state, or sprays a suspension, and is used as a biopurification material with viable bacteria attached. 100 μm, bulk specific gravity 0.2-2.0 g / cm
3. It is characterized by a mixture of closed cells and open pores.

The biopurification material powder of the present invention can also be provided as a carrier in the food industry such as brewing and enzyme production. Further, it can be provided as a material for retaining bacterial cells for mushroom cultivation. Furthermore, it can be provided as a composting promoter or deodorant for livestock waste.

[0015]

Embodiments of the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a production process diagram of the biopurification material of the present invention. The natural glass material (1), which adsorbs or adheres and immobilizes microorganisms, is pearlite composed of obsidian, perlite and pine stone, or volcanic glass material of shirasu balloon composed of shirasu and ash (2) and volcanic eruptions of rhyolite. It is a pumice material (3) whose main component is natural glass. Pumice is washed and classified (16), heated and sterilized (15)
Select the natural material that was used. Since these natural glass materials are exposed to heat and foamed by heating (4), they are porous, have low thermal conductivity, are chemically stable, are lightweight, and are excellent in water absorption and transpiration. . The pH is almost neutral, and can be flexibly adapted to the colonization characteristics of microorganisms. These natural glass materials may be used alone or as a mixture. Further, the powder may be used as it is in the form of powder, granule, or lump, or may be used by kneading and granulating the powder with a clay mineral. It produces a large amount and is inexpensive as a biopurification material to be consumed in large quantities. It is harmless to dispose of natural resources. Natural glass material weathers in nature and eventually returns to the soil. It is optimal because it does not need to be recovered as biopurification material at the contaminated site. It is preferable to select one having a low content of titanium oxide having an antibacterial action.

The foamed natural glass material can flexibly cope with weight adjustment. For example, in the case of perlite, the dust (8) collected from the bag filter generated in the process of baking and foaming has many balloon-like or foamed pores and a very low bulk specific gravity of 0.06 to 0.2. However, the fine powder (9) generated in the sieve classification (5) or the like breaks the pores and turns the glass fragments into a card-like shape, increasing the density and increasing the bulk specific gravity to about 1.8. When the granular pearlite (6) is crushed and sieved (7), it becomes lighter, and when crushed and classified, it becomes heavier. When the weight is further increased, the fine powder collected by crushing and rectification or dust collection is kneaded with a binder (10) made of clay minerals, hydrated (11), and granulated (13).
A porous body of about μm can be obtained. In addition, auxiliary materials (12)
By adding cereal or cereal fine powder and burning the auxiliary material, the size and density of the pore diameter can be adjusted. 750-85
When fired at 0 ° C., a lightweight porous ceramic is obtained. However, for disposable as bio-purifying material,
Ceramics increase the cost and should be avoided. The fine powder generated in the perlite manufacturing process has a limited use, and if there is no demand, it is disposed of as industrial waste.
Precious natural resources can be used effectively.

When the natural glass material fine powder is granulated and used, the clay mineral as a binder has good compatibility with bentonite. Bentonite is preferably used in an amount of 25 to 30% by weight. Further, granulation is facilitated by adding 5 to 10% by weight of organic fine powder of grains or grain husks as an auxiliary material for forming and sizing in wet extrusion. Wet extrusion of natural glass material is important for forming the amount of water. It collapses when there is much water, and does not solidify when there is little water. The aid of organic fines is effective in spreading the moisture control width of the kneaded wet product. Addition of corn starch, wheat flour, buckwheat husk fine powder, etc. to the organic fine powder makes granulation and moldability suitable. It has the effect of not breaking the porous material on which the microorganisms settle and breaking the surface structure. 10 after granulation
Dry with air at about 0 ° C (14). If there is a purpose to control the pore size depending on the environmental characteristics of microorganisms, etc., heating to burn organic matter is required. The burnout of the organic substance has the effect of adjusting the distribution and size of the pore diameter, and a surface structure that facilitates adsorption and adhesion of microorganisms can be obtained.

The bio-purifying material of the present invention is used to fix and carry
The microorganisms to be preserved are fungi that are useful for biopurification, bacteria that have spores, molds, actinomycetes, spores, and aerobic and facultative anaerobic bacteria. These may be immersed in a suspension (17) of useful microorganisms purely cultured and acclimated for impregnation and implantation, or may be adhered by spraying an aqueous solution. Also,
An aqueous solution of a commercially available microbial composite material may be sprayed. Further, an aqueous solution may be prepared and dispersed with a granular purifying material. In any case, the microorganism is dissolved in water to be adsorbed or adhered, and used as a microorganism carrier (18). Alternatively, the spores or endospores can be supported in a dormant state by ventilation drying (19) and stored and used as a biopurification material for water treatment (20) or soil treatment (21). For viable bacteria and anaerobic microorganisms useful for biopurification, suspensions, sealed containers or gelled ones are increased in aqueous solution and sprayed on materials, but handling requires specialized knowledge.

When utilizing the ability of microorganisms, the preservation method of microorganisms is extremely important. Because the generation change time is short,
Evolve and mutate. Even when transplanted by subculturing and preservation, the mutation may occur and the expected ability may not be maintained. As a means of preserving inoculum for a long time and always maintaining stable performance, proper preservation methods suitable for the characteristics of microorganisms are basic and important techniques. Bacteria that have spore-forming fungi, actinomycetes, and spores can be stored for a long period of time if they remain dormant and suppress metabolism, and if they suppress nutrient depletion and metabolite products. As the carrier preservation method, soil, sea sand, silica gel and the like are often used. The biopurification material mainly comprising the natural glass of the present invention can also be stored on a carrier. Specifically, if microorganisms are adsorbed and adhered, dried, and shut off from air, aerobic bacteria and facultative anaerobic bacteria can be stored, and they can be provided as materials for carrier storage.

The division speed (generation time) of the microorganism is several tens of minutes to several hours, during which growth, multiplication, and generation alternation are performed. For example, when the respiratory activity is calculated by equivalent weight as compared with humans, fungi are 10 to 50 cultures and yeasts are 50 to 100 cultures.
It is said that cultures and bacteria absorb 100-3000 cultures of oxygen. Microorganisms coexist with animals and plants with high metabolic capacity. Cows eat grass and gradually decompose plant cellulose by the action of extracellular enzymes produced by a huge number of microorganisms in the gastrointestinal tract and by their own digestive enzymes, and convert them to high-quality proteins. Plants produce extracellular enzymes, degraded minerals, moisture, heat, and other substances that are by-products of the metabolic activity of microorganisms that inhabit organic matter in the soil.
It grows by absorbing nutrients from the roots. Animals and plants coexist with microorganisms and use their enzymes to maintain life. When charcoal is introduced into the soil, useful microorganisms such as mycorrhizal fungi, rhizobia, and aerial nitrogen fixing bacteria proliferate. As they propagate, the degraded enzymes are absorbed from the roots and plant growth is promoted. In the case of crops, this leads to increased sales. In addition to increased sales of vegetables, it has been confirmed that the growth of turf and fruit trees and the growth of trees such as cedar and pine also have a growth promoting effect. Charcoal is a carbon source for useful soil bacteria and is a soil improvement material. Perlite and pumice have high water retention and porosity and trap air. It is also a suitable material for raising seedlings. A useful soil bacterium can be immobilized on the charcoal (22) or the fertilizer (23) and the biomaterial of the present invention, and provided as an agricultural material (24).

The form of treatment of the contaminated site is symptomatic purification. Emergency and flexible treatment at the site of the contaminated area. In the case of water treatment, it is preferable that the powder can be sprayed in the form of powder or granules that float on the water surface, float in the water, and sink to the bottom of the water. Aerial application may be necessary depending on the situation. It is preferable that the material is diffused on the water surface and dispersed on the water bottom to be in harmony with the environment. The surface of soil contamination is scattered in powder or granular form. If the contamination is spreading in the ground, the contaminated area is separated and treated with soil washing or water treatment.
It will be kneaded with the contaminated soil and treated. It is important that the carrier situation fuses with the soil. In any case, the object to be treated and the useful microorganism are surely encountered, and the subsequent detoxification treatment is left to the vitality of the microorganism. Purification materials themselves are unnecessary and must be harmless to the environment. The perlite, shirasu balloon, and pumice made of natural glass material eventually weather and return to the soil and circulate naturally. In most cases, water treatment and soil treatment coexist at contaminated sites. The function of biopurifying materials is a function that requires adjustment of the bulk density to be compatible with water treatment and soil treatment. Natural glass materials can flexibly meet the required functions. It can be used in the form of powder, granules, agglomerates, or granules. The fixed density of microorganisms differs, but can be compensated for by adjusting the concentration of the suspension. It is easy to handle locally and can be provided as a material harmless to the environment.

[0021]

[Embodiment 1] Hereinafter, the present invention will be described based on embodiments, but the present invention is not limited to these examples.

[Table 1] Table 1 shows the chemical components, physical properties, and microbial carrier functions of natural glass materials. Natural glass material is produced from lightweight rhyolite magma, and its composition differs slightly depending on the volcanic zone and volcanic activity, but there is no great difference. Due to the volcanic eruption, the lava in the upper part of the magma becomes rhyolite, obsidian, and pearlite due to the difference in cooling rate near the surface. Pumice and volcanic ash ejected by pyroclastic flows are called volcanic glass. Around the caldera volcano where the explosion occurred, there are abundant rocks, pumice and volcanic ash. The bentonite deposit is said to have been modified from volcanic glass and rhyolite tuff, and its origin and composition are similar. It has been used for a long time as a soil conditioner in the agricultural field, and it is known that microorganisms and algae settle well in clayey paddy fields and that rice grows well. As a reference microorganism, a Bacillus-type bacterium which is marketed as an environmental purification biopharmaceutical of Meiji Seika (trade name: BNCLEAN) is used as a reference bacterium. The test method for the number of immobilized viable bacteria is a general viable test method for foods.
The cells are cultured for a period of time, and the number of viable bacteria is counted from the number of colonies. Since BN bacteria produce endospores, the preservability of the carrier as a biopurification material was also measured. As a result, it was confirmed that it was possible to save the spores and endospores of the microorganism carrier if the storage conditions were devised, although it was halved in about one month.

[0022]

Embodiment 2

[Table 2] Table 2 shows biopurification materials for immobilizing microorganisms. These materials are used for immobilizing microorganisms used in the market, although they have different uses. Material A is a biopurification material. Material B is a porous ceramic for treating organic waste. The cedar chips in Material C are fungal bed materials used for composting garbage and livestock waste. Materials D, E and F are fluidized beds for wastewater treatment and sewage treatment. If the number of viable bacteria to be fixed is large, a quick effect is expected. In the case of biopurification, the function of reliably carrying microorganisms and dispersing them to a contaminated area, which is a feeding ground for microorganisms, is more important. From that point, the bacterial density per area is an important characteristic. The functions of conventional microbial carriers used in closed environments and biopurification materials used in open natural environments are different. However, it was confirmed that the number of fixed viable bacteria was about the same as that of the materials used in the closed environment, and it was confirmed that it could function as a material in the closed environment.

[0023]

Example 3 The deodorizing effect of livestock waste and the effect of promoting composting using biopurification materials were examined in a pairwise comparison.

[Table 3] The deodorizing effect was measured by measuring the amines concentration and ammonia concentration by the detector tube.

[0024]

[Example 4] This is a list of the results of comparing usefulness as agricultural materials in horticultural production houses. Effect of Bacillus thuringiensis (BT bacteria ‥‥ microbial pesticide) Mycorrhizal fungi, horticultural soil

[Table 4]

[0025]

According to the biopurification material of the present invention, screening for the development and enhancement of the function of microorganisms useful for biopurification has been completed, and safety has been confirmed.
If a strengthening method is established, it will be possible to flexibly cope with water treatment and sludge treatment of contaminated sites as a biopurification material, and contribute to natural circulation-type environmental conservation, such as purification of already contaminated environment and restoration of environment by the proliferation of microorganisms. Can be. Microorganisms can be immobilized as a bio-purifying material even if it is powdered, granular, massive, or granulated. Above all, it is a natural glass material even if it is thrown away locally, and weathers and eventually fuses with the soil. It is inorganic, chemically stable, and can be supplied in large quantities at low cost. It can be provided as a suitable biopurification material.

According to the bio-purifying material of the present invention, it is possible to carry and deliver useful microorganisms to polluted areas on the water surface, in the water, and on the water bottom of lakes and rivers. Particularly excellent effects can be expected by mixing natural glass materials having different bulks with easy weight adjustment. By adjusting the mixing ratio of the continuous vent and the independent climatic body, it can be expected that it will work effectively in the whole water area. In particular, microorganisms having spores or endospores can be aggressively sprayed in the air to respond to urgent red tides and blue-green algae, for example, to minimize damage. The potential for cross-contamination due to drug application is almost eliminated. Quick response to tanker oil spills. Similarly, if microbial pesticides could be developed, it would be possible to minimize the damage of food pests by the large army of grasshoppers and locusts that occur periodically.

According to the biopurifying material of the present invention, the promotion of composting of livestock waste and the reduction of bad smell in livestock barns are
It can be easily handled using existing useful microorganisms. BN bacteria whose use has been relatively limited until now can be widely spread. Exploiting the metabolic capacity of microorganisms that change generations in just a few tens of minutes can potentially restore a critical global environment.
Suitable materials for immobilizing microorganisms have been identified in the present invention. The porous material of natural glass is a natural material, and there is no single porous material. The structure of the pores is diverse and the pore diameter is varied. It can flexibly respond to the size of microorganisms that settle. Moreover, since the carrier is inorganic, there is no fear that the carrier itself is decomposed by the action of microorganisms. It is harmless to living organisms. For example, perlite has proven to be safe enough to be used as a food additive. If technologies that properly utilize the amazing ability of useful microorganisms can be spread, natural circulation-type environmental conservation will be promoted.

The main materials of the biopurification material of the present invention are perlite of natural glass material, pumice and volcanic ash. Since this is heat sterilized, it is sterile. It is in an environment where useful microorganisms can easily colonize. The demand for pearlite fine powder generated in the manufacturing process was limited, and the remaining was discarded. The usefulness that microorganisms can easily colonize is extremely high, and the effective use of natural resources can be ensured. In addition, perlite and pumice have been used for nursery and horticultural soil since ancient times. The characteristics of water retention, heat insulation and high porosity were utilized. According to the present invention, the growth rate of roots is greatly different due to the action of extracellular enzymes due to the biochemical reactions of microorganisms, the plant activity is increased, and the absorption of nutrients in addition to conventional oxygen, moisture and temperature is promoted, Was proved to haveten. It is thought that the original organic farming method using more aggressive microorganisms will spread, starting from the hydroponic farming method that is easy to control. In addition, it can be expected to break away from the excessive dependence on harmful pesticides and chemical fertilizers and stop the dead spiral.

The bio-purifying material of the present invention is a bio-purifying material that takes into account the natural environment in which a contaminated site is open, unlike the conventional microorganism-fixed carrier used in a closed environment. According to the present invention, only conditions for effectively utilizing microorganisms can be widely applied. Future bioreactors
With the development of technologies such as biomass, the ecology and function of useful microorganisms
The elucidation of the ability of microorganisms such as microbial sensors and enzyme sensors that can search for pb-level endocrine disrupters is expected. The biopurifying material of the present invention is expected to be able to flexibly cope with it as a mineral and natural material even as a carrier for unknown microorganisms.

[0030]

[Brief description of the drawings]

FIG. 1 is a production process diagram of a biopurification material.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Natural glass 2 Volcanic ash / shirasu 3 Vitreous pumice 4 Heat foaming 5 Classification process 6 Granular product 7 Crushing and sizing 8 Dust collection fine powder 9 Powdery product 10 Binder 11 Water 12 Auxiliary material 13 Granulation / molding 14 Drying 15 Heating・ Sterilization 16 Washing / Classification 17 Suspension impregnation 18 Microorganism carrier 19 Drying 20 Water treatment 21 Soil treatment 22 Charcoal etc. 23 Fertilizer etc. 24 Agricultural materials

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. 7 Identification symbol FI Theme coat ゛ (Reference) C05G 3/00 101 C05G 3/00 101 C12N 1/00 C12N 1/00 S 11/14 11/14

Claims (10)

    [Claims]
  1. The main material is a pearlite composed of obsidian, perlite and pine resin, or a volcanic glass material of a shirasu balloon composed of shirasu / volcanic ash and a light glass mainly composed of natural glassy material of volcanic products of rhyolite. It is stone. By using these alone or as a mixture, the pore size can be several μm.
    100100 μm, bulk specific gravity 0.2-2.0 g / cm 3 , a porous material with a mixture of closed cells and continuous pores, immersed in a suspension of microorganisms useful for bioremediation (biopurification), Alternatively, it is a carrier on which microorganisms immobilized by adhering or adhering microorganisms by spraying a suspension are characterized by being harmless even if disposable locally.
  2. 2. The biopurifying material according to claim 1, wherein the main material is a powder, a granular product, or a lump product used alone or in combination.
  3. 3. The bio-purifying material according to claim 1, wherein the main material is pulverized and granulated and formed into granules and pellets using at least one kind of clay mineral as a binder.
  4. 4. The biopurifying material according to claim 1, wherein the microorganism is carried in a live state or dried and the microorganism is carried in a spore or endospore dormant state.
  5. 5. The biopurification material according to claim 1, wherein a material that floats on water, sinks in water, and floats in water is present by using a mixture of main materials.
  6. 6. An antibacterial titanium oxide having a low content of titanium oxide is selected.
    And the biopurification material according to 5.
  7. 7. The biopurification material according to claim 1, wherein the pumice material is washed and sterilized by heating.
  8. 8. The microbial active material according to claim 1, wherein an enzyme is used instead of the microorganism.
  9. 9. The method according to claim 1, wherein useful soil bacteria are immobilized and mixed with charcoal, fertilizer or seed.
    Agricultural materials according to 3, 4, 5, 6 and 7.
  10. 10. A method of manufacturing the method, wherein the method comprises the steps of: producing a pearlite composed of obsidian, perlite and pine stone; or a volcanic glass material of a shirasu balloon composed of shirasu / volcanic ash; The pumice material is washed, heated and sterilized to make it the main material, using powdered, granular, and lump products.
    Alternatively, the powdered product is mixed with a clay mineral, granulated, and used as granules / molded product. The product is immersed in a suspension of microorganisms useful for biopurification, adsorbed by microorganisms, air-dried, and spores or internal Carrying the spores dormant or spraying the suspension,
    A porous material used as a bio-purifying material to which live bacteria are attached, having a pore diameter of several μm to 100 μm and a bulk specific gravity of 0.2 to
    A method for producing a biopurification material, comprising 2.0 g / cm 3 , wherein closed cells and open pores are mixed.
JP2000174425A 2000-05-09 2000-05-09 Biological cleaning material Pending JP2001314882A (en)

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