JPH10165177A - Bacteria implanting tool and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain an implanting tool for a denitrifying bacterium, etc., capable of removing a nitrate salt exerting an evil influence on culturing fishes by housing a biodegradable polymer in a tube made from a synthetic resin membrane and provided with plural small holes, melt-cutting the tube for adhering the tube ends closely. SOLUTION: This bacteria implanting tool for a denitrifying bacterium, etc., formed by packing a biodegradable polymer material 1 with a synthetic resin membrane 3 provided with >=2 holes 2 or by coating the same, capable of removing a nitrate salt having a low toxicity to fishes but exerting an evil influence on culturing fishes on accumulation thereof or preventing the accumulation of the nitrate salt, improving the living environment of the fishes, simplifying the culturing work for a long period of culturing fishes by a culturing worker and reducing a cost therefor, is obtained by housing the biodegradable polymer 1 in a tube 4 made from the synthetic resin membrane 3 and provided with >=2 small holes 2, and melt-cutting the tube for adhering the tube ends closely.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to aquatic animal and plant breeding,
In particular, nitrate and nitrite of nitrogen oxides, which are pollutants contained in breeding water in ornamental fish breeding, are converted to facultative anaerobic microorganisms that grow and proliferate using biodegradable polymers as substrates or hydrogen donors. Reduced and eliminated by nitrifying bacteria,
And the prevention of accumulation. More specifically, it is necessary to secure the habitat of denitrifying bacteria, which is a facultative anaerobic microorganism and efficiently exerts the denitrifying action of the denitrifying bacteria, which are heterotrophic (organic) vegetative bacteria. It relates to a bacterial implantation tool for maintenance.

[0002]

2. Description of the Related Art Conventionally, nitrate and nitrite in ornamental fish breeding water have been reduced, eliminated and prevented from accumulating by using a spherical substrate as a substrate for a denitrifying bacterium, which is a facultative anaerobic microorganism and a dependent (organic) vegetative bacterium. Biodegradable resin (commercial name,
Deniball (Nobe Shokai) is commercially available as a biodegradable polymer alone for removing nitrate. A commercially available spherical biodegradable polymer having a complex shape (trade name: Deniball Nobe Shokai) was analyzed by a diffuse reflection method (FT-IRJIR3510, manufactured by JEOL Ltd.). It was confirmed that it was a synthetic resin containing.

[0003]

The final pollutant of ornamental fish breeding water is nitrate of nitrogen oxide generated by nitrification, and the adverse effect caused by the inclusion of nitrate in the breeding water is low fish toxicity. Is accumulated and stresses fish that are sensitive to nitrate when breeding fish, and adversely affects the physical condition of invertebrates such as corals that are sensitive to nitrate. Further, it is said that the accumulation of nitrate causes abnormal occurrence of algae such as moss, thereby impairing the aesthetic appearance, and harmful moss that produces fish poisonous substances is also generated in cyanobacteria appearing after green algae. This phenomenon is that red tides in the ocean can occur in aquariums, and it is necessary to reduce and remove nitrates. The reduction and removal of the nitrate content in water is carried out by frequent water change of breeding water, which is a heavy labor.

[0004] At present, a simple spherical biodegradable polymer serving as a substrate for a denitrifying bacterium that is commercially available is also described in the instruction manual for use, and contains very little oxygen dissolved in the breeding water. Complaining of using it without it,
The use of biodegradable polymer alone or the place of use has not been established, and the situation is left to the ingenuity of each user. The use of a single substance becomes meaningless, and there is a high possibility that it cannot be used effectively, and the contamination of breeding water will be promoted. Although a dedicated container that uses a commercially available biodegradable polymer alone is commercially available separately, even if this dedicated container is used, the structure of this dedicated container is simply a perforated plate that holds the biodegradable polymer alone. The breeding water is only contacted uniformly with the biodegradable polymer alone, and the flow rate of the breeding water is only adjusted to a small amount, so the amount of oxygen dissolved in the breeding water is extremely small, or It is difficult to maintain and secure breeding water without water. Ornamental fish breeders recognize that nitrate removal is necessary, but it is difficult to spread for the above reasons.

[0005] In biological filtration, the type of filtration tank,
The emphasis is on how to quickly decompose organic matter and efficiently convert fish poison ammonia and nitrite into relatively harmful nitrates by nitrification. Aeration is performed to send oxygen into the breeding water to sufficiently dissolve oxygen. This is generally instructed as a method of breeding aquatic animals such as fish.

In the natural world, there are denitrifying bacteria, which are antinitrifying microorganisms capable of sequentially reducing nitrate by a denitrifying action and releasing them to the atmosphere as nitrogen gas or nitrous oxide gas. The habitat in which denitrification takes place is effective when the presence of organic matter as a substrate and the amount of oxygen dissolved in the breeding water is extremely low or no, and the denitrifying bacteria use the oxygen constituting nitrogen oxides for respiration, The oxides are reduced, thus reducing and removing nitrates.

[0007] Conversely, nitrogen oxides that have been converted into nitrates by nitrification are released to the atmosphere by denitrification, which means that there is a problem of dissolved oxygen in breeding water and that organic substances as substrates or hydrogen donors are denitrified by denitrifying bacteria. There is an opposite contradiction to the nitrification action that must be given.

[0008] It is difficult to create a place where the amount of dissolved oxygen in the breeding water is extremely low by using a biological filtration type and a type of filtration tank of a home fish breeding aquarium which is currently used for general ornamentation. If the filter is clogged with sludge with the passage of date and time, and a partial anaerobic area has been created, the sulphate-reducing bacteria, etc. will proliferate because they can also serve as habitat for absolute anaerobic microorganisms. Hydrogen sulfide, a highly toxic substance, may be produced and annihilate living organisms.Nitrate is reduced to nitrite and then to ammonia by assimilation-type reduction, which also destroys all living organisms. It is possible and scary. Ordinary ornamental breeders have poor knowledge and are difficult to understand, so it is difficult to secure breeding water with extremely low dissolved oxygen, which is the habitat for denitrifying bacteria that reduce and remove nitrate. ing.

The present invention is intended to secure the habitat of denitrifying bacteria and the effect of denitrification in breeding aquatic organisms such as fish, and to secure and maintain breeding water with a low dissolved oxygen content, and to solve the problems of the use method and place of use. In addition, for the purpose of reducing and reducing artificial seawater costs in case of heavy labor such as water replacement work and breeding seawater animals and plants, in the denitrification process of general water treatment equipment such as wastewater treatment equipment that requires denitrification. As a substitute for the conventionally used microorganism-immobilized carrier, a bacterial implantation tool is used, and the use of dangerous and toxic substances such as methanol, which is conventionally used as a substrate for denitrifying bacteria, is eliminated. It is possible to reduce the handling work, and also to solve the problem of the large installation area of the denitrification tank in the denitrification process of the conventional wastewater treatment equipment etc., and to reduce or remove nitrogen oxides or nitrate more effectively. Accumulation of It is intended to provide a bacterial implantation instrument measured the establishment of the stop.

[0010]

In order to achieve the above-mentioned object, the present invention provides a bacterial implantation device which prevents breeding water and wastewater requiring denitrification from easily flowing and allows gas to be easily exhausted. The biodegradable polymer 1 is housed in a hard or soft synthetic resin film 3 having two or more pores 2 formed as described above.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION The biodegradable polymer 1 serves as a substrate or a hydrogen donor for the growth and growth of heterotrophic (organo) trophic bacteria. In a situation where dissolved oxygen in water is extremely low, the presence of nitrite and nitrate, which are nitrogen oxides, is a facultative anaerobic microorganism that uses the constituent oxygen of nitrogen oxides for respiration and reduces and removes nitrogen oxides. Certain denitrifying bacteria swarm and land on the biodegradable polymer.

In order to reduce and remove nitrate and nitrite, which are nitrogen oxides, by using denitrifying bacteria, it is necessary to raise breeding water (hereinafter referred to as original breeding water) and wastewater containing nitrogen oxides (hereinafter referred to as original breeding water). Hereafter, it is necessary to secure raw breeding water and raw wastewater with little or no dissolved oxygen in the raw wastewater.

In the following, the bacterial implantation tool of the present invention is limited to ornamental fish breeding water. If the biodegradable polymer 1 requires denitrification and does not easily come into contact with the original breeding water containing dissolved oxygen. And two or more pores 2 provided on the peripheral surface of the synthetic resin film 3 so that the original breeding water requiring further denitrification is not easily circulated. Therefore, the flow of the breeding water flowing in and out of the bacterial implantation equipment is impeded, the amount of inflow and outflow is restricted, and the breeding water is replaced with the breeding water in a state of infiltration and inflow. For this reason, the watering time in which the breeding water in the bacterial implantation tool is replaced becomes longer, and the breeding water in the bacterial implantation tool is temporarily placed in a stagnant state with time. In breeding water placed in a still-water stagnation state, dissolved oxygen in the original breeding water is consumed by various aerobic microorganisms, the amount of dissolved oxygen becomes extremely small, aerobic microorganisms die, and thereafter facultative anaerobic A habitat for denitrifying bacteria, which are germ-free microorganisms.

In the bacterial implant, the body surface of the biodegradable polymer 1 provides a habitat for aerobic microorganisms, but is below the body surface of the biodegradable polymer 1 and is mostly biodegradable. The inside of the body of the molecular body 1 has a very small amount of dissolved oxygen, which becomes a habitat for the denitrifying bacteria, which are facultatively anaerobic microorganisms, and the denitrifying bacteria land on the biodegradable polymer 1. As a result, the nitrate and nitrite, which are nitrogen oxides in the original breeding water, are reduced as they are reduced and consumed by the denitrifying action of the denitrifying bacteria, which are facultative anaerobic microorganisms implanted on the biodegradable polymer, Removed. The reduced and removed breeding water and original breeding water are continuously leached in and out of the bacteria implanting device in small amounts, and are agitated.

The breeding water that infiltrates into the bacterial implantation device of the present invention is an absolutely anaerobic microorganism because it is not breeding water completely free of dissolved oxygen, and is particularly toxic by reducing sulfates in breeding marine organisms. Sulfate-reducing bacteria that produce hydrogen sulfide are difficult to implant in bacterial implants.

The material of the synthetic resin film 3 includes a thermoplastic resin, a thermosetting resin, a rubber, and the like, and a thermoplastic resin is suitable and may be either hard or soft. The material properties and various properties of the synthetic resin film 3 mechanically require strength as a matter of degree, but properties that are easily deteriorated or embrittled are more suitable, and thermal embrittlement or softening temperature is more appropriate. And the durability against various types of deterioration, particularly the weather resistance, water resistance, moisture resistance, heat resistance, cold resistance, light resistance, ultraviolet resistance, etc., should be as low as possible. Further, a hydrophilic or water-absorbing resin containing constituent groups such as a hydroxyl group and a carboxyl group is preferable. Synthetic resins which are said to have the potential to inhibit the growth and propagation of microorganisms and which do not elute additives such as plasticizers and lubricants added to the synthetic resin and contain no additives are most suitable. In addition, a biodegradable synthetic resin may be used as the material of the synthetic resin film 3. However, in this case, the biodegradable synthetic resin is more difficult to decompose than the biodegradable polymer 1.

The thickness of the synthetic resin film 3 is set to 30 μm to 5 mm in consideration of mechanical properties such as tensile strength and impact strength of various thermoplastic resins. It is also conceivable to use a synthetic fiber woven fabric or felt, a nonwoven fabric having micropores, or an open-cell resin sheet in which small cells are connected to adjacent cells by small holes as the synthetic resin film 3.

The synthetic resin film 3 is a light-shielding synthetic resin film 3 or a colored synthetic resin film 3 for preventing the inhabitation of unnecessary microorganisms, for example, for preventing the growth of photosynthetic bacteria. However, the use of a bacterial implantation tool in a place having a light-shielding property may be achieved by using a transparent synthetic resin film 3.

Powder of calcium hydroxide, calcium carbonate, magnesium oxide, magnesium hydroxide or the like is added to the material of the synthetic resin film 3 at an arbitrary weight so that the synthetic resin film 3 is not easily damaged. Mold synthetic resin,
Alternatively, when formed on the synthetic resin film 3 as an inorganic / organic hybrid biodegradable synthetic resin, a neutralizing action of acidification accompanying the progress of the nitrification reaction, which has an adverse effect on breeding organisms, can be added, and dehydration can be achieved. It is said that the denitrifying activity of the nitrifying bacteria is the highest around PH9, which can be approached. In particular, it is said that an isobutylene-maleic anhydride copolymer resin has excellent dispersibility in inorganic substances.

The pores 2 provided on the peripheral surface of the synthetic resin film 3
The pore diameter is set to 6 μm or more and 2 mm, which is low in water holding power without capillary attraction and good in water permeability.

The biodegradable polymer contained in the synthetic resin film 3 as the biodegradable polymer 1 is a completely degradable polymer or a biodegradable polymer which is decomposed by microorganisms and assimilated by microorganisms. There are, as the completely degradable polymer, polyhydroxybutyric acid and its derivatives and pullulan produced by microorganisms, chitin of natural products, chitosan, starch, cellulose, agar and the like, and mixtures and complexes thereof, It is an aliphatic polyester-based polymer such as polybutyric acid, a low molecular weight biodegradable synthetic resin, a urethane-bonded copolymer such as an aliphatic polyurethane, and an ether-bonded copolymer such as polyethylene glycol. The synthetic polymer is a synthetic resin containing a completely degradable polymer in an arbitrary weight ratio, and is a high molecular weight biodegradable synthetic resin such as polybutyric acid. An ester-based polymer, other, a urethane bond copolymers and aliphatic polyurethane, is an ether bond copolymers such as polyethylene glycol. For the purpose of denitrification, a biodegradable polymer containing no nitrogen atom as a constituent atom of the biodegradable polymer 1 is preferable.

Considering the denitrification effect rate, the biodegradable polymer 1 is polybutylene succinate adipate (PBSU) having good biodegradability in seawater as denitrification of seawater.
AD), polyethylene succinate (PESU) having good biodegradability in fresh water as denitrification of fresh water, and polyhydroxy butylate valerate (PHB / V) (Polymer in March 1996) for both seawater and freshwater No. 45, page 143) is suitable.

Polyhydroxybutyrate is a nutrient substance in the body of many microorganisms, and is more biodegradable in an oxygen-free environment. It is most suitable as one of the materials.

The biodegradable polymer 1 of the bacterial implantation device is a completely degradable polymer or a biodegradable polymer, and includes a solid, liquid, or gel state, and a solid degradable polymer. For porous polymers and biodegradable polymers, continuous porous resin with open pores in which vacuoles communicate with adjacent vacuoles through small pores can be shaped into granules, powders, or strings, or completely Degradable polymers and biodegradable polymers can be used as granules, powders, and long-fiber spun or corded materials as they are, or granules, powders, and long-fiber spun materials can be compacted and adhered. Solidified sphere, oval, square, rectangular, tetrahedral, cylindrical,
The synthetic resin film 3 is formed into a shape such as a helical body or the like, and is further accommodated in the synthetic resin film 3 as a solid, liquid, or gel mixture or composite. When the solid biodegradable polymer 1 is made of a continuous porous resin, the pores are 6 μm or more having good water permeability and low water retention without capillary attraction.

Microorganisms such as denitrifying bacteria that are implanted on the biodegradable polymer 1 are components of compounds such as oxygen, vitamins and hormones that are biologically active for growth and reproduction, It is said that metabolic processes require trace elements (minerals). Therefore, it is conceivable to mix igneous rock particles or powders such as quartz porphyry or granite, such as barley stone, and granite, which contain essential elements of the living body as silicates or oxides, with the biodegradable polymer 1.

Experiments have confirmed that the bacterial implant of the present invention is also effective in removing ammonia from contaminated water (Japanese Patent Application No. 8-279842, bacterial implant), and that ammonia has only nitrite-type nitrification action. After that, reduction and removal of nitrite were confirmed by denitrification. Ammonia is oxidized and converted to nitrite, and there is no reaction of nitrate to be oxidized and converted from nitrite with a test reagent.Nitrite directly converts nitrite into nitrous oxide gas or nitrogen gas by denitrification. It is considered that the nitrite was released to the atmosphere when the ammonia was oxidized and converted to nitrite by nitrite-type nitrification, and simultaneously the nitrite became nitrous oxide gas or nitrogen gas by denitrification.

The bacterial implantation device of the present invention can secure and maintain an environment where denitrifying bacteria, which are facultatively anaerobic microorganisms, can be implanted even if dissolved oxygen is present in water, and denitrification bacteria can be removed. Because it can remove nitrogen oxides by nitrification, it is not limited to breeding water for aquatic animals and plants lovers, but large-scale aquariums such as aquariums that require denitrification as nitrate and nitrite nitrogen oxide removal tools Water tank equipment and wastewater treatment equipment that usually involves denitrification,
Further, the present invention can be used in a combined septic tank and a water treatment facility of a separation contact aeration system, an anaerobic filter bed contact aeration system, and the like.

The bacterial implantation device of the present invention is formed by enclosing a biodegradable polymer 1 with a synthetic resin film 3 having two or more pores 2 or by coating. In this mode, rice or copper wire, such as laver rolled sushi or electric cable, is covered with laver or synthetic resin, crushed and cut, and then the coated material at both ends is in close contact with each other. Or in a bag of cement, or in a state of being wrapped in another taste product different from the taste, such as candy, chocolate, or gum. As a means of manufacturing this,

Referring to FIG. 6 as a means 1 for producing, a thermoplastic synthetic fiber film or sheet having a large number of pores 2 or a woven fabric or felt, a nonwoven fabric having fine pores or an empty The process of welding and bonding is performed by welding or bonding the open-cell resin sheet, etc., in which the cells communicate with the adjacent vacuoles through small holes, in the form of a tube or a tube using heat appliance welding, high-frequency welding, ultrasonic welding, or an adhesive. Then, the biodegradable polymer 1 in the form of a granular material, a powder, a liquid, or a gel is filled and housed in the tube 4 made of a synthetic resin film having a tubular or cylindrical shape. Thereafter, a synthetic resin film tube 4 filled with the biodegradable polymer 1
Heating equipment welding, high frequency welding,
Fusing by ultrasonic welding etc. to complete the bacterial implantation tool.

Referring to FIG. 5 as means 2 for producing, referring to FIG. 5, in order to produce a continuous porous resin, hydrocarbon foaming agents such as propane, butane and pentane, azodicarbonamide, sodium citrate, sodium bicarbonate, ammonium carbonate While processing a melt of a thermoplastic synthetic resin mixed with a chemical foaming agent such as ammonium bicarbonate into a tube or tube by an adaptive process such as an extrusion molding machine, the tube or tube processed in this process is processed. The biodegradable polymer 1 in the form of granules, powders, liquids or gels is filled and accommodated therein. After that, the ends of the synthetic resin film 3 at both ends of the synthetic resin film tube 4 filled with the biodegradable polymer 1 are adhered to each other by heat appliance welding, high frequency welding, ultrasonic welding or the like, and blown off to obtain a bacterial implantation tool. Finalize.

As means 3 for producing, for producing a continuous porous resin, a hydrocarbon foaming agent such as propane, butane or pentane or a chemical foaming agent such as azodicarbonamide, sodium citrate, sodium bicarbonate, ammonium carbonate or ammonium bicarbonate is used. In a melt of a thermoplastic synthetic resin mixed with or dissolved in a solvent, a required spun body, string-like body or sphere, egg-like body, cuboid, rectangular body, tetrahedron, cylinder The biodegradable polymer 1 shaped into a shape such as a helical plate-like body for several seconds to several minutes, or several times,
After that, it is cooled or dried to complete the bacterial implantation device.

As means 4 for producing, a biodegradable material shaped into a spun body, a string body or a sphere, an ovoid body, a cuboid, a rectangular body, a tetrahedron, a tubular body, a helical body, etc. The polymer 1 is immersed in a melt of a thermoplastic synthetic resin or a solution dissolved in a solvent for several seconds to several minutes, or immersed several times, and then cooled or dried to produce a thermoplastic synthetic resin. In the state of being applied to the degradable polymer 1, two or more pores are provided on the peripheral surface with a plate tool or a rotating tool having a needle-like sharp tool such as a carbon dioxide laser or a sword plate to provide a bacterial implantation tool. Finalize.

As means 5 for producing, biodegradation shaped into a spun yarn, string, sphere, egg, square, rectangular, rectangular, tetrahedral, cylindrical, spiral, etc. A plate having a needle-like sharp tool such as a carbon dioxide laser or a sword plate on its peripheral surface is coated with a melt of a thermoplastic synthetic resin or a solution dissolved in a solvent by a sprayer, and then cooled or dried. A bacterial implantation tool is completed by providing two or more pores with a tool or rotating tool.

As means for producing other bacterial implantation tools, bagging such as rice bagging and cement bagging, laver sushi production, electric wire cable production in electric wire coating molding, candy production containing different tastes are included. It is also conceivable to use an apparatus system or the like to manufacture a bacterial implantation tool using such an apparatus system.

The biodegradable polymer 1 is covered with a synthetic resin film 3 or a cross-sectional shape of a bacterial implanter coated or coated with a synthetic resin cylinder having an inner diameter of 10 mm to 20 mm or an approximate inner diameter. Body and polygonal cylinder, further 10m
A circumferential egg shape or oval shape having an inner diameter of m to 20 mm is used.
In addition, in the bacterial implantation tool manufactured by the manufacturing means 1 and 2, the both ends may be connected by heat fusion to form a donut shape, or a triangular donut deformation type.

[0036]

According to the present invention, when breeding fish and the like, it is possible to perform denitrification even if dissolved oxygen in the breeding water is higher than necessary for denitrification. It is possible to reduce nitrate, which is harmful to breeding fish. Nitrate is removed by reduction treatment to enable long-term breeding of fish, aquatic and marine organisms, and simplification of breeding and work such as frequent cleaning of aquariums and reduction of frequent water refilling of aquarium breeding water. To be peeled off. In breeding seawater animals and plants, the cost of artificial seawater can be reduced.

In the bacterial implantation device of the present invention, the breeding of absolute anaerobic microorganisms such as sulfate-reducing bacteria and methane-producing bacteria is suppressed because the bacterial implantation device always comes into contact with breeding water or wastewater containing dissolved oxygen. . Especially in the case of seawater rearing water, sulfate is reduced by sulfate reducing bacteria, and the generation of highly toxic hydrogen sulfide is small, and even if it is generated, dissolved oxygen is present in the hydrogen sulfide leached out of the bacterial implantation tool It is exposed to breeding water and is reduced to sulphate by sulfur-oxidizing bacteria existing in the vicinity where dissolved oxygen is present, and rendered harmless.

Simultaneous progression of nitrite-type nitrification by nitrite-nitrifying bacteria, which is considered to be a kind of heterotrophic (organic) vegetative bacteria, and denitrification of nitrite by denitrifying bacteria was confirmed (Japanese Patent Application No. 8-2798).
42, bacterial implantation equipment), so that fish and the like can reduce the size of the filtration tank when breeding, and can reduce the amount of oxygen to be supplied to the nitrification process in wastewater treatment equipment and the like, which is economically advantageous and at the same time the nitrification process. Can be denitrified in the nitrification tank, and the size of the apparatus can be reduced. When designing a process such as denitrification activated sludge treatment using the bacterial implantation tool of the present invention,
It may be possible to design a process without the conventional denitrification step.

The bacterial implantation tool of the present invention can be freely formed in shape, size, and length depending on the purpose of use, and can be used for wastewater treatment equipment requiring denitrification. The use of dangerous and poisonous substances such as methanol, which is commonly used as a substrate for denitrifying bacteria, can be eliminated, handling can be reduced, and the denitrification process of conventional wastewater treatment facilities The problem of large installation area of the denitrification tank can be solved.

The effective period of ammonia removal and denitrification by using a bacterial implant using the solid biodegradable polymer of the present invention depends on the material and weight of the biodegradable polymer 2.
At least one month to one year or more is possible.

[Brief description of the drawings]

FIG. 1 is a partial cross-sectional perspective view of a bacterial implantation tool of the present invention.

FIG. 2 is a sectional perspective view of a bacterial implantation tool of the present invention.

FIG. 3 is a perspective view of Example 1 of a bacterial implantation tool of the present invention.

FIG. 4 is a perspective view, partially in section, of a second example of a bacterial implantation tool of the present invention.

FIG. 5 is a schematic diagram of the production of a bacterial implantation tool of the present invention.

FIG. 6 is a schematic diagram 2 of the production of a bacterial implantation tool of the present invention.

FIG. 7 is a schematic diagram showing a method for manufacturing a bacterial implantation tool, in which a biodegradable polymer 1 of a spun or string-like body is immersed and coated in a melt or a solution of the synthetic resin of the present invention.

FIG. 8 is a perspective view of Example 3 of a bacterial implantation tool according to the present invention.

FIG. 9 is a perspective view, partially in section, of a fourth example of a bacterial implantation tool of the present invention.

FIG. 10 is a perspective view, partly in section, of a fifth example of a bacterial implantation tool of the present invention.

FIG. 11 is a perspective view, partly in section, of a bacterial implantation tool example 6 of the present invention.

FIG. 12 is a perspective view, partially in section, of Example 7 of a bacterial implantation tool of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 biodegradable polymer 2 pores 3 synthetic resin film 4 synthetic resin film pipe 5 pipe extruder 6 synthetic resin introduction 7 biodegradable polymer introduction 8 cooling section 9 biodegradable polymer filled pipe 10 welding Fusing 11 Bacterial implants 12 Welding and bonding 13 Synthetic resin bath 14 Coated biodegradable polymer

Claims (4)

[Claims] 1. A bacterial implantation device in which a biodegradable polymer (1) is covered with a synthetic resin film (3) provided with two or more pores (2) or a coating is formed. 2. A biodegradable polymer (1) in a tube (4) made of a synthetic resin film (3) provided with two or more pores (2).
The bacterial implanter according to claim 1, wherein the bacterial implanter is manufactured by fusing the tube (4) and bringing the tube ends into close contact. 3. The biodegradable polymer (1) is produced by immersing the biodegradable polymer (1) in a synthetic resin melt or solution having means for producing an open-cell resin, followed by cooling and drying. Bacteria implanter. 4. The method according to claim 1, wherein the biodegradable polymer (1) is applied by means of applying a synthetic resin melt or solution, and two or more holes are provided on the peripheral surface. Bacteria implanter.