JPH0866674A - Device for continuously scattering high-density microorganisms - Google Patents

Abstract

PURPOSE: To continuously scatter microorganisms propagated in high density to treat a contaminated soil, etc., and to increase the effect of fertilizer on vegetation. CONSTITUTION: The aerobe useful to the soil environment, etc., is immobilized on a porous ceramic piece and introduced into the propagation reactor 7 of the first and second propagation tanks 2 and 3, a heated raw water is supplied into the tanks 2 and 3, air is diffused from a diffuser pipe 10, the contents are agitated by an agitator 16, and fresh propagation microorganism and nutrient are continuously supplied at the same time from the tanks 4 and 5 to propagate the high-density microorganisms. The propagated soln. is scattered by a scattering means 6 on the contaminated soil or a filed to increase the effect of fertilizer on vegetation from the tank 2 on the one hand, the microorganisms are propagated in the tank 3 on the other hand, and the process is repeated.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an apparatus for continuously proliferating microorganisms for treating harmful substances which cause soil pollution and crop damage, or microorganisms useful for soil cultivation, plant cultivation, etc. at high density. Regarding

[0002]

2. Description of the Related Art Conventionally, for example, when plants such as soil and turfgrass are contaminated with oils and fats such as gasoline, waste oil, heavy oil and light oil, emulsifiers, surfactants, detergents, benzene, triethanolamine and the like, For example, after requesting treatment from a specific treatment company to replace it with new soil, it is replanted with new plants, or the entire amount of contaminated soil is sampled and burned to restore it to its original state. .

[0003] On the other hand, in gardening farmers and the like, in order to prevent continuous crop failure in this field, for example, methyl bromide (M
B), chlorpicrin, ditrapex, etc. are sterilized with a disinfecting gas to prevent the spread of soil diseases, and even if the soil diseases are spread, the soil is disinfected with pesticides.

[0004]

However, the treatment for replacing soil or plants as in the former case is very large and costly. On the other hand, if left unattended and awaiting natural purification, there is a risk of not only killing plants but also causing social problems such as natural runoff due to rainfall, polluting rivers, and polluting groundwater. It was

In the latter case of disinfecting soil with a disinfecting gas, after the disinfection, the bacteria having a fast growth rate are recovered in preference to other bacteria, and the types of bacteria are simplified mainly in that. In addition, since the nitrifying bacteria are killed by soil disinfection, ammonia remains untreated and harmful bacteria are likely to spread, which is a dangerous treatment method. However, no more effective treatment method could be found by the present treatment method, and it was unavoidable in the case of disinfecting deeply into the soil, for example, about 25 cm or more. Therefore, for example, when soil disinfection is performed, it is necessary to quickly grow a soil that is not easily affected by pests and is suitable for plant growth.

In addition, when fertilizing plants and the like to grow them, there has been a demand for a method of enhancing the absorption efficiency of nutrients absorbed from plant roots.

[0007]

[Means for Solving the Problems] In order to solve the above problems, the present invention effectively utilizes microorganisms existing on the earth to purify soil and the like, or to enhance the absorption efficiency of nutrients to plants and the like. I chose That is, aerobic microorganisms that are beneficial to the soil environment, etc. are immobilized on a carrier and placed in a growth tank, raw water is supplied to this growth tank, and aeration and stirring are performed under predetermined temperature conditions. A high-density microbial community is propagated by continuously supplying various growth microorganisms and nutrients to the soil, turfgrass, rivers, or plants contaminated with nutrients serving as food for this high-density microbial community. The fertilizer was applied continuously to the main field where the effect of fertilizer was to be increased.

At this time, the aerobic microorganisms are various oils and fats,
Soil pollution such as emulsifiers and surfactants, substances that cause plant pollution, or microorganisms that preferentially assimilate various harmful substances that cause continuous crop failure in facility gardening main fields, or soil cultivation,
It is a microorganism that is useful for growing plants. The carrier is a porous ceramic plate, pellet, or particle.

Further, a plurality of breeding tanks may be provided in parallel, and while the breeding liquid is being sprayed from the breeding tank on one side, the breeding tank on the other side may be grown and this may be repeated alternately.
Alternatively, a plurality of breeding tanks may be provided in series, and the breeding solution grown in the upstream breeding tank may be sent to the downstream breeding tank and sprayed from the downstream breeding tank.

Aeration in the breeding tank and air blow for spraying the microbial population were conducted from the same air supply source.

[0011]

[Function] Although a substance that causes a pollution source is treated with microorganisms or the effect of fertilizer on plants is enhanced through the microorganisms, the environmental conditions in which the microorganisms can live are limited and the growth rate is slow. Even if the microorganisms cultured by the conventional method are directly sprayed on the pollution source or the like, the concentration of the microorganisms in the natural environment is immediately lowered and the effect cannot be enhanced. Therefore, in the present invention, the concentration of microorganisms is increased to the maximum in the growth tank, and at the same time, a high-density microorganism group is provided with a hand lunch as a nutrient, thereby adding physical strength and nutrients until the treatment is completed. Here, conditions such as nutrients are set according to the types of microorganisms that are effective against harmful substances such as pollution sources or microorganisms that are beneficial to the soil, and optimal growth methods such as temperature conditions are set.

Here, as the microorganism, for example, in the case of treating a harmful substance such as a persistent nonionic surfactant or triethanolamine, a microorganism decomposing a specific substance of Flavobacterium spp. Or Shademonas metanica spp. Is suitable.

As a microorganism useful for soil cultivation, for example, microorganisms of the genus Shademonas are known to produce antifungal antibacterial substances such as pyrrolnitrin and pyrroltheolin, and this specific microorganism is used as a pesticide. Disinfecting the soil with a sprayer, etc., can be applied to make soil resistant to pests.

Microorganisms useful for plant growth are, for example, rhizosphere microorganisms that give vitality to plant roots (microorganisms that continue to live in the rhizosphere). And actively promote the growth of plants by positively absorbing the secretions of microorganisms into the plant roots.

At this time, the use of porous ceramics as a carrier for immobilizing microorganisms enhances the proliferation effect,
In addition, by making the air supply source of the air blow for the ventilation and the air supply source of the air blow for spraying the microorganisms the same, the device can be made compact and lightweight, and for example, it can be easily configured to be portable.

Further, if a plurality of breeding tanks are provided in parallel so that one of the breeding tanks grows and the other breeding tank sprays them, and this process is repeated, a large amount of the breeding liquid is continuously sprayed. You can do it. Further, by providing a plurality of breeding tanks in series, the breeding time can be increased.

[0017]

Embodiments of the present invention will be described with reference to the accompanying drawings. Here, FIG. 1 is a structural example diagram showing a basic structure of a continuous spraying device for high-density microorganisms of the present invention, FIG. 2 is an enlarged partial sectional view of a growth reactor device in a growth tank, and FIG. 3 is a growth reactor device. It is a perspective view which shows an example of the shape of a carrier.

As shown in FIG. 1, the basic structure of the continuous spraying apparatus for high-density microorganisms of the present invention is a raw water storage tank 1 for storing raw water, a first growth tank 2 for growing microorganisms, and a second growth tank. 3, each microbial tank 4 for supplying a microbial for growth to each of the growth tanks 2, 3, each nutrient tank 5 for supplying a nutrient to each of the growth tanks 2, 3, and spraying for spreading the grown microbial group A means 6 is provided, and the respective breeding tanks 2 and 3 are provided in parallel, and
A growth reactor device 7 is provided in each of the growth tanks 2 and 3.

A large number of porous ceramic pieces 8 as carriers, which will be described later, are provided in the breeder reactor 7.
Are contained in the porous ceramic piece 8, and microorganisms are immobilized in advance on the porous ceramic piece 8. Further, an air diffusing tube 10 having a large number of air diffusing holes is provided below the inside of each breeding reactor unit 7, and the diffusing tube 10 has a compressor 11
The air pipes 12 for supplying the above air are connected. Also,
An air pipe 13 for supplying air for spraying is provided between the compressor 11 and the spraying means 6.

A water supply pipe 14 is provided between the raw water storage tank 1 and each of the breeding tanks 2 and 3, and a raw water storage tank 1 is provided by a pump P.
As well as being able to suck up the raw water of
A warmer 15 is provided in the middle of the water supply pipe 14, and the warmer 15 allows the raw water to have a predetermined temperature range (for example, about 30 to 5 in the case of a microorganism that prefers to assimilate various fats and oils).
It is heated to 0 ° C). And this warmer 1
The branch pipes 14a and 14b are branched downstream of the valve No. 5 so that heated raw water can be supplied to the respective growth tanks 2 and 3 by operating a valve.

The raw water is tap water or ground water. If the tap water can be supplied to each of the breeding tanks 2 and 3, the raw water storage tank 1
Is not necessarily required. Further, the warming of the raw water by the warming device 15 may be performed after the raw water is supplied to the breeding tanks 2 and 3 instead of being heated before being fed to the breeding tanks 2 and 3.

The microorganisms contained in the microorganism tank 4 are fixed in an inorganic fine particle such as diatomaceous earth or an organic powder such as wheat flour or rice bran in a so-called hibernation state, and a predetermined amount is supplied by the quantitative supply means 4a. It is supplied to each of the breeding tanks 2 and 3. The quantitative supply means 4a is a known one such as a screw feeder, a belt feeder, a vibration feeder, a quantitative mass device and the like.

The nutrients stored in the nutrient tank 5 are appropriately selected depending on contaminants. For example, when the cause of contamination is mineral oil such as heavy oil, commercially available Hyponex powder can be used. Mineral oil such as gasoline and soybean oil,
For vegetable oils such as rapeseed oil, commercially available powdered fertilizers, liquid fertilizers, etc. can be used. It is also effective to add brown sugar powder to commercially available powdered fertilizers such as Hyponex. And
Screw feeder, belt feeder, vibration feeder,
A constant amount can be supplied to each of the breeding tanks 2 and 3 by a constant amount supply means 5a such as a flow rate measuring device.

The first and second breeding tanks 2 and 3 are, for example, containers having conical bottoms, and discharge pipes 2a and 3a are provided at the centers of the bottoms, respectively. In addition, each breeding tank 2,
An agitator 16 for mixing and agitating the supplied raw water, growth microorganisms and nutrients, and an electromagnetic liquid level switch 17 for detecting the liquid level of the growth liquid are provided on the upper part of each growth tank 2 When the liquid level switch 17 detects that the liquid level of 3 has risen to a predetermined level, the branch pipe 14 on the corresponding side is detected.
The valves a and 14b are closed and the constant quantity supply means 4
The operation of a and 5a is stopped, and when the liquid level drops to a predetermined level, the valves of the branch pipes 14a and 14b on the corresponding side are opened and the fixed quantity supply means 4a and 5a are activated.

Each of the breeding reactor devices 7 is a hollow body having a large number of punch holes h as shown in FIG.
A perforated support plate 7a such as a net or a punching plate is provided below the inside. The air diffuser 10 is provided below the perforated support plate 7a, and the large number of porous ceramics pieces 8 are housed above the perforated support plate 7a.
And this breeding reactor device 7 and perforated support plate 7a
Is made of a material such as vinyl chloride, FRP, stainless steel, iron, etc., and the air diffuser 10 is, for example, a vinyl chloride pipe, a stainless steel pipe, an iron pipe, or the like.

Further, punch holes h of the breeding reactor unit 7
Is formed as a horizontal or downward hole from the inside of the cylinder to the outside of the cylinder, and in particular, when the liquid level is lowered, the inside of the growth reactor device 7 is convected upward by the air ejected from the diffuser pipe 10. The proliferating solution of is easily discharged to the outside to enhance the convective stirring effect.

The porous ceramic piece 8 is made of, for example, alumina, silicic acid, iron oxide, titanium oxide, magnesium oxide, potassium oxide, etc. as the main raw material, and also contains a trace amount of calcium oxide, manganese oxide, sodium oxide, etc. As shown in the example of FIG. 3, the microorganisms are immobilized in advance, and as shown in an example of FIG. 3, a cylinder type, a ball type, a column type, a star type, a triangular type, a rectangular type,
It is desirable that the shape is arbitrarily selected from a corrugated shape, a concave-convex shape, a lotus root shape, etc., and the porosity is, for example, about 5 to 75%.

The spraying means 6 is a collecting pipe 2 in which the outlet pipes 18 and 19 extending from the respective breeding tanks 2 and 3 shown in FIG.
It is connected to 0, and is configured as a spray type or a spray hose type so that spraying can be performed over a wide area. Then, as described above, the air pressure sent by the compressor 11 is used for spraying.

The operation of the above-mentioned continuous spraying apparatus for microorganisms will be described. The raw water supplied from the raw water storage tank 1 is warmed to a predetermined temperature by the warmer 15 and sent to the first breeding tank 2. In addition, air blows out from the air diffuser 10 below the growth reactor 7 of the first growth tank 2 and rises inside the growth reactor 7. When the hot water is filled in the first breeding tank 2, the liquid level switch 17 closes the valve of the branch pipe 14a and the supply of the hot water is stopped.

On the other hand, a fixed amount of growth microorganisms and nutrients are supplied from the microorganism tank 4 and the nutrient tank 5 of the first growth tank 2 by the respective quantitative supply means 4a, 5a. Then, when agitated by the agitator 16 at the upper part, the air ejected from the air diffuser 10 and the agitator 16 cause a convection of the growth liquid,
Microorganisms that have been immobilized and hibernating wake up from hibernation, start their activities, and multiply.

At this time, the air ejected from the air diffuser 10 passes through the surface of the porous ceramic piece 8 or the inner surface of the ventilation hole to activate the activity of the immobilized microorganisms, and the stirrer 16 rises. It is effective in forcibly expanding the water flow toward the periphery of the breeding tank 5 and then pushing it downward to promote convection, and the growth is accelerated by continuously raising and lowering. Further, in order to promote the growth, the temperature setting by the warmer 15 is one of the important requirements.

Thus, while the first breeding tank 2 is growing, the second breeding tank 3 is supplied with heated raw water,
Proliferation is started through the same process as the first breeding tank 2.

When the microorganisms in the first growth tank 2 multiply at high density, a lamp (not shown) is turned on, the valve of the outlet pipe 18 and the valve of the spraying means 6 are opened, and a large number of microorganisms and nutrients are contained. Sprinkle the growth fluid where needed. And
When the spraying of the first breeding tank 2 is completed, the spraying is started from the second breeding tank 3, but at this time, the drain cock of the discharge pipe 2a of the first breeding tank 2 was opened to fix the growth microorganisms. Emission of residues such as inorganic powder, organic powder, plant,
Spray on the roots of trees. Then, after that, the same operation is repeated again.

The high-density microbial community thus dispersed is
Rich nutrients are given in the breeding tanks 2 and 3 to strengthen physical strength, and since there are abundant nutrients in the surroundings, decomposition and purification of pollution sources and the like can be completed in a very short time. Further, since the air pipe 12 for supplying air to the air diffuser 10 and the air pipe 13 for supplying air upstream of the spraying means 6 are connected to the same compressor 11 and the air supply drive source is the same, the apparatus is made compact. Is planned.

Next, a second structural example of the present invention will be described with reference to FIG. In the figure, the same parts as those described above are designated by the same reference numerals. In this configuration example, the first and second breeding tanks 2 and 3 are provided in series, which is different from the parallel configuration in the configuration example.

That is, the raw water warmed by the warmer 15 is supplied only to the first breeding tank 2, and the breeding liquid which has grown to some extent in the first breeding tank 2 is passed through the connecting pipe 22 to the second breeding. It is sent to the tank 3, the growth of the high-density microorganism group is completed in the second growth tank 3, and it is led from the outlet pipe 19 to the spraying means 6. It should be noted that a means for supplying nutrients to the second breeding tank 3 and a stirrer may be provided.

In this case, hot water, growth microorganisms and nutrients are supplied from the water supply pipe 14, the microorganism tank 4 and the nutrient tank 5 in the first growth tank 2 in the same procedure as described above, and the agitator 16 is used. After the microorganisms are grown to almost the desired density by stirring and aeration by the air diffuser 10, the valve of the connecting pipe 22 is opened and sent to the second growth tank 3, and the air diffuser 1 of the second growth tank 3 is supplied.
Propagation is completed by aeration from 0, and spraying is carried out by the spraying means 6 connected to the outlet pipe 21. During this time, the connecting pipe 2
The valve 2 is closed and the raw water, the growth microorganisms and the nutrients are supplied again in the first growth tank 2 to start the growth.

Therefore, it is possible to grow a new group of microorganisms in the first growth tank 2 even while spraying from the second growth tank 3. That is, the second breeding tank 3 is effective in earning the breeding time.

By the way, when the spraying area is small,
It is possible to use only a single breeder tank 2 as shown in FIG. In this case, continuous spraying is limited to the range of the capacity of the breeding tank 2, but it may be sufficient when spraying to a locally contaminated site, for example. .

Next, a modified example of the air supply means for the air diffuser 10 will be described with reference to FIGS. All of these are designed so that a mixed flow of air and a breeding liquid is ejected from the air ejection port of the air diffuser 10. FIG.
The fan 24 is driven by the submersible motor 23 connected to a, and the air sucked from the outside air suction pipe 25 and the breeding liquid taken in by the fan 24 are mixed and sent to the air diffuser 10.

Further, in the case of FIG. 7, the growth liquid is sucked from the suction pipe 26 by the pump P installed outside the growth tank 2,
This growth liquid and the air sucked from the air suction pipe 27 are mixed and sent to the air diffuser 10. Then, by ejecting the mixed flow in this way, the convection effect is further improved.

Now, a concrete application example of the present continuous spraying device will be described with reference to FIGS. FIG.
Is an embodiment in which this device is mounted on a vehicle and is configured as a portable device. In this case, in addition to the raw water storage tank 1, the first and second breeding tanks 2 and 3, the compressor 11, etc., for example, a generator 30 for driving power source, LP gas 31 for warming raw water, etc. are mounted on the vehicle, Spraying is performed in the spraying area by the spraying means 6 provided with the rubber hose 32 and the like. This device is, for example, fuel is leaked in a vehicle accident and the soil is locally contaminated with oil or fire extinguishing agent,
This is effective when spraying a microorganism that prefers to assimilate fats and oils and treating it when the plant is contaminated.

Next, FIG. 9 shows an embodiment in which, for example, the soil in a greenhouse is disinfected, and then microorganisms useful for growing the soil are sprayed. For example, after disinfecting with a disinfecting gas,
After about 10 to 20 days have passed, the greenhouse is removed, and before and after tilling with a tiller, microorganisms useful for soil growth are sprayed with this device.

Next, FIG. 10 shows an embodiment in which, for example, microorganisms useful for growing plants planted in rock wool 35 are sprayed together with liquid fertilizer. In this case, for example, the groundwater as the raw water is sucked up by the pump P, the rhizosphere microorganisms as the growth microorganisms are supplied by the constant quantity supply means 4a, and the liquid fertilizer as the nutrients is supplied by the constant quantity pump 5a as the constant quantity supply means to grow the microorganisms. Is sprayed from the irrigation pipe 6 as a spraying means. At this time, it is needless to say that spraying the stock solution of the proliferating solution is the most effective. However, if the cost is to be kept low, it is also effective to mix it with the raw water by the operation panel 33 and then spray it. is there. Alternatively, the breeding liquid sucked from the second breeding tank 3 may be directly introduced into the pump P body, and mixed with the raw water in the pump P body to be sprayed, so that the operation panel 33 may not be provided to dilute it. Incidentally, reference numeral 34 in the drawing is a support base.

[0045]

INDUSTRIAL APPLICABILITY As described above, the apparatus for continuously spraying high-density microorganisms according to the present invention is capable of maximizing the concentration of microorganisms that assimilate pollutants and the like in the growth tank, or microorganisms useful for soil and plant cultivation. At the same time, the microorganisms of high density are sprayed with a box lunch as nutrients, so that, for example, when soil, turfgrass, etc. are locally contaminated with oil, or soil is sterilized. This is effective when or when it is desired to enhance the effect of fertilizer on plants.

[Brief description of drawings]

FIG. 1 is a structural example diagram showing the basic structure of a device for continuously spraying high-density microorganisms according to the present invention.

FIG. 2 is an enlarged partial sectional view of a breeding reactor device in a breeding tank.

FIG. 3 is a perspective view showing an example of the shape of the carrier in the growth reactor device.

FIG. 4 is a diagram showing a configuration example when a plurality of breeding tanks are arranged in series.

FIG. 5 is a diagram showing a configuration example when there is one breeder tank.

FIG. 6 is a structural example view showing a modified example of air supply means for the air diffuser.

FIG. 7 is a structural example view showing a modified example of air supply means for the air diffuser.

FIG. 8 is an explanatory diagram when this device is applied to treatment of oil pollution and the like.

FIG. 9 is an explanatory diagram when the device is applied to soil cultivation in farmland or the like.

FIG. 10 is an explanatory diagram when the device is applied to plant cultivation.

[Explanation of symbols]

2 ... 1st growth tank, 3 ... 2nd growth tank, 4 ... Microorganism tank, 5 ...
Nutrient tank, 6 ... Spraying means, 7 ... Proliferation reactor device, 8 ...
Porous ceramic piece, 10 ... Air diffuser, 15 ... Heater,
16 ... Stirrer.

Claims (7)

[Claims] 1. An aerobic microorganism, which is beneficial to the soil environment, etc., is immobilized on a carrier and installed in a growth tank, and raw water is supplied to this growth tank and aerated and agitated under a predetermined temperature condition. By continuously supplying new growth microorganisms and nutrients, a high-density microorganism group is propagated, and this high-density microorganism group is provided with nutrients that serve as food and is continuously sprayed to soil or the like. A continuous spraying device for high-density microorganisms, which is characterized in that 2. The aerobic microorganism preferably prefers various substances such as various oils and fats, emulsifiers, surfactants, etc. that cause soil contamination and plant contamination, or various harmful substances that cause continuous cropping failure in a field gardening facility. The continuous spraying device for high-density microorganisms according to claim 1, which is an assimilating microorganism. 3. The continuous spraying device for high-density microorganisms according to claim 1, wherein the aerobic microorganisms are microorganisms useful for soil growth, plant growth and the like. 4. The continuous spraying device for high-density microorganisms according to claim 1, 2 or 3, wherein the carrier is a plate, pellets, particles or the like of porous ceramics. 5. A plurality of the above-mentioned growth tanks are provided in parallel, and while growing a microorganism group in one of the growth tanks, a group of microorganisms grown from the other growth tank is scattered, and this is repeated alternately. Claim 1 or Claim 2 or Claim 3 characterized
Alternatively, the device for continuously spraying high-density microorganisms according to claim 4. 6. A plurality of said growth tanks are provided in series, and the microorganisms grown in the upstream growth tank are sent to the downstream growth tank, and the microorganisms grown in the downstream growth tank are scattered. Claim 1 or Claim 2 or Claim 3 characterized
Alternatively, the device for continuously spraying high-density microorganisms according to claim 4. 7. The continuous spraying device for high-density microorganisms according to claim 4 or 5, wherein the same air supply source is used for aeration in the growth tank and air blow for spraying microorganisms.