JPH11179393A - Treating device and method using microorganism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To keep the activity of microorganisms in a good condition by fixing a treatment part to treat organic objects by using microorganisms, and a gas supply part to supply activated gas for maintaining microorganisms active to the treatment part. SOLUTION: A gas supply part 25 which supplies activated gas containing air to microorganisms is composed of an activated gas generator 25a which consists of a steam generating part provided with a heater to convert water into steam and an air pump to mix the generated steam with air and transport it, a gas diffusion part 25b which diffuses the activated gas containing air output from the generator 25a, into a treatment layer 14 and is installed on the side part of the treatment layer 14, and gas piping 25c which connects these units. And, air and/or water supplied from the gas supply part 25 can accelerate aerobic resolution by aerobic microorganisms, and can adjust the water retention value of microorganism carriers so as to prevent the formation of a lump consisting of the microorganism carriers or the like in the treatment layer 14.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

[0001] The present invention relates to a processing apparatus using microorganisms and a processing method using microorganisms.

[0002]

2. Description of the Related Art In recent years, methods for treating organic wastewater using aerobic microorganisms have been actively researched and developed. For example, in a sewage treatment plant, the activated sludge method is usually adopted,
In the combined type septic tank, the activated sludge method and the immersion filter method are adopted.

[0003] Regarding garbage discharged from homes and the like, research and development have been conducted on crushing garbage with a disposer and treating the crushed garbage as garbage-containing wastewater.

For example, Japanese Patent Application Laid-Open No. 9-1117 discloses that
The garbage-containing wastewater is introduced into the solids treatment section, where the solids are decomposed by microorganisms, and then the primary treated water discharged from the solids treatment device is introduced into the wastewater treatment tank, where it is subjected to aeration treatment. Discloses that solid matter is decomposed and removed from garbage-containing wastewater pulverized by a disposer and the wastewater is purified.

[0005]

However, as described above, the apparatus for decomposing by microorganisms may be provided with a heater for controlling the temperature to maintain the activity of the microorganisms. Since the temperature is lowered, there is a possibility that the temperature cannot be controlled to a preferable temperature over the entire range of the microorganisms or most of the range.

In addition, in the case of using a heater, the microbial environment is dried, so that there is a possibility that the microbial activity cannot be maintained satisfactorily.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to provide a processing apparatus using a microorganism and a processing method using the microorganism, which can favorably retain the activity of the microorganism.

[0008]

SUMMARY OF THE INVENTION The present invention relates to a processing apparatus utilizing microorganisms, comprising: a processing section for processing an organic substance using microorganisms; and a processing section for keeping the microorganisms active in the processing section. A gas supply unit for supplying an activation gas.

In the present invention, since an activating gas for keeping the microorganisms active can be supplied, it is possible to efficiently process the organic components in the organic substance in the processing section.

[0010] The present invention relates to a treatment apparatus utilizing microorganisms, which comprises treating a wastewater containing organic solids using microorganisms, and an activated gas for keeping the microorganisms active in the treatment section. And a gas supply unit for supplying gas.

In the present invention, since an activating gas for keeping the microorganisms active can be supplied, it is possible to efficiently treat the organic components in the wastewater containing organic solids in the treatment section. .

[0012] The present invention relates to a treatment apparatus utilizing microorganisms, which treats an organic wastewater with microorganisms, and supplies an activation gas for keeping the microorganisms active to the treatment section. And a gas supply unit for the same.

In the present invention, since an activating gas for keeping the microorganisms active can be supplied, it is possible to efficiently treat the organic components in the organic wastewater in the treatment section.

The present invention relates to a treatment apparatus utilizing microorganisms, comprising a primary treatment apparatus comprising a treatment section for treating wastewater containing organic solids by utilizing microorganisms, and a primary treatment apparatus discharged from the primary treatment apparatus. A secondary treatment device comprising a treatment unit for treating wastewater using microorganisms, wherein the microorganisms are actively retained in at least one of the treatment unit of the primary treatment device and the treatment unit of the secondary treatment device. And a gas supply unit for supplying an activation gas for use.

In the present invention, the activation gas is supplied because the activation gas for keeping the microorganisms active can be supplied to at least one of the processing section of the primary processing apparatus and the processing section of the secondary processing apparatus. It is possible to efficiently process the organic components in the processing section.

It is preferable to supply the activation gas to both the primary processing device and the secondary processing device. In this case, the gas supply unit may be common to both devices, but may be configured to include first and second gas supply units corresponding to the primary and secondary processing devices, respectively.

Since the length of the secondary treatment device for treating wastewater is generally long, supplying an activating gas to the treatment section of the secondary treatment device has a large effect.

In particular, the treatment section is provided with an auxiliary section on the drainage outflow side. The activation gas may be supplied to the processing unit via the auxiliary unit. This auxiliary section preferably has a function of promoting drainage from the processing section.

The present invention relates to a treatment apparatus utilizing microorganisms, comprising: a treatment section for treating organic waste water using microorganisms; and an auxiliary section for promoting drainage from the treatment section. A gas supply unit for supplying an activation gas for keeping the microorganisms active.

According to the present invention, it is possible to supply an activating gas for keeping the microorganism active, so that the organic components in the organic wastewater can be efficiently treated.

Further, the invention is characterized in that the processing units are provided in multiple stages.

In particular, a plurality of the processing units and the auxiliary units are provided, and the processing units and the auxiliary units are alternately stacked.

Further, the processing section is made of a microorganism carrier.

Particularly, the supply of the activating gas to the processing section is performed via the auxiliary section.

In this case, if the auxiliary section is configured to have a higher diffusion efficiency inside the processing section than the processing section, the activation gas is supplied to the processing section by supplying the activation gas through the auxiliary section. Gas can be supplied more uniformly.

Further, the auxiliary section has a higher porosity than the processing section.

In this case, the auxiliary unit can be configured to have a higher diffusion efficiency inside the processing unit than the processing unit.
Therefore, by supplying the activation gas through the auxiliary unit, the activation gas can be more uniformly supplied to the processing unit.

In particular, the activation gas is characterized in that it is an oxygen-containing gas within a temperature range in which microorganisms that decompose organic components are activated. Here, the oxygen-containing gas may be air, substantially only oxygen, or the like.

In this case, since the heating can be performed more uniformly than the heating of the processing section by a heater or the like, the aerobic microorganisms can be activated over the entire area of the processing section, and the processing by the aerobic microorganisms can be performed more efficiently. . In particular, it works effectively when the inside of the processing section is not agitated. In addition, even when the inside of the processing section is filled with, for example, a microorganism carrier, the activation gas flows through the gap between the microorganism carriers, so that even in this case, uniform heating can be achieved.

Further, the activation gas is a steam-containing gas within a temperature range in which microorganisms that decompose organic components are activated.

In this case, there is no possibility that the inside of the processing section dries, and the microorganisms are activated. Again,
It works effectively when the inside of the processing section is not agitated. In addition, even when the inside of the processing section is filled with, for example, a microbial carrier, the activation gas flows through the gap between the microbial carriers.

The above-mentioned temperature range is such that the temperature in the processing section is 20.
-40 ° C may be sufficient.

The present invention is a processing method using microorganisms, wherein an activating gas is supplied to microorganisms for processing an organic substance.

In the present invention, an activating gas for keeping the microorganisms active can be supplied, so that the organic components in the organic matter can be efficiently treated.

The organic substance is an organic liquid or / and an organic solid. The organic solid may be, for example, kitchen waste (garbage), the organic liquid may be waste water extracted from a mixture of crushed kitchen waste and water, and furthermore, organic waste. The liquid and the organic solid, that is, the mixture thereof, may be a mixture of crushed kitchen waste and water.

The treatment section preferably has a water retention property, has a gap that allows passage of air, and is composed of a large number of microorganism carriers that can easily hold and inhabit microorganisms, especially aerobic microorganisms. A configuration in which a porous material is filled may be used. Preferred forms include wood chips.

It is preferable that the auxiliary section is disposed in close contact with the processing section. As the configuration of this auxiliary part, one having water retention and a higher porosity than the processing part directly above is preferred. With this configuration, the drainage from the processing unit can be promoted, and when the activation gas is supplied to the processing unit by supplying the activation gas to the auxiliary unit, the activation gas is supplied to the entire auxiliary unit. It is preferable because the activation gas is more uniformly supplied to the entire processing section. The auxiliary portion may be configured to be filled with, for example, a granular porous material. In this case, the granular porous material is preferably larger than the microorganism carrier.

[0038]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment according to the present invention will be described with reference to the drawings. FIG. 1 is an overall configuration view of a solid-containing wastewater treatment device provided with an organic wastewater treatment device (primary treatment device) as viewed from the front, and FIG.
FIG. 3 is a schematic perspective view of a secondary treatment device of the solid-containing wastewater treatment device as viewed from the side of the next treatment device. This apparatus treats garbage-containing wastewater containing garbage (kitchen waste) from a kitchen or the like as organic solid-containing wastewater. In the apparatus according to the present embodiment, waste water containing garbage, in which garbage crushed by a disposer provided at a drain of a household sink is integrated with water (for example, tap water), is introduced. However, a form in which the disposer is built in the organic wastewater treatment device may be used.

In the figure, reference numeral 10 denotes a primary treatment device for decomposing organic solids such as garbage. Reference numeral 12 denotes a container (tank) having a hopper structure that constitutes the primary processing apparatus 10. Specifically, a cross section having a rectangular cylindrical portion 12a and a stripe-shaped drainage port 12b at a portion corresponding to a vertex at a lower portion thereof is provided. And a triangular portion 12c.

Reference numeral 14 denotes a size 1 contained in the container 12.
It is a treatment layer (treatment section) of about 15 cm thickness filled with a wood chip (microbial carrier) made of cedar sawdust of about 5 mm. The treatment layer 14 filters the introduced garbage-containing wastewater to discharge organic wastewater, traps organic solids (crushed garbage), and forms organic matter by aerobic microorganisms living inside the garbage. It has a function of decomposing a solid substance. In the present embodiment, cedar sawdust (porous material) is used as a microorganism carrier, but it has a filtering function of trapping organic solids and discharging wastewater, and has a water retention property, and has microorganisms attached. Any other suitable material can be used as long as it is easy to inhabit. For example, a porous material such as a porous plastic or a porous glass material can also be used.

Reference numeral 16 denotes a first auxiliary layer (first auxiliary portion) which is disposed in close contact with the lower side of the processing layer 14, and its porosity is set to be larger than the porosity of the processing layer 14. By having water retention, the treatment layer 14 and the first auxiliary layer 1
It has a function of minimizing environmental changes at the boundary of No. 6 and promoting discharge of wastewater from the treatment layer 14. This first auxiliary layer 16
Specifically, is a configuration in which foamed glass particles (porous glass particles) having a particle size of about 5 mm larger than a microorganism carrier are filled.

Reference numeral 18 denotes a thickness of 2 to 3 made of a fibrous component (porous layer) closely arranged below the first auxiliary layer 16.
cm of the second auxiliary layer (second auxiliary portion), the porosity of which is set to be larger than the porosity of the first auxiliary layer 16. Has the function of reducing the environmental change and promoting the discharge of wastewater from the first auxiliary layer 16. The second auxiliary layer 18 has a mat shape formed by entanglement of many hard plastic fibers having a wire diameter of about 0.5 mm.

Reference numeral 20 denotes a corrugated sheet material disposed under the second auxiliary layer for collecting and discharging water. The corrugated sheet material 20 is disposed obliquely toward the drain port 12b so as to facilitate drainage (primary treatment liquid) toward the drain port 12b and forms an inverted triangular section 12c.

Reference numeral 24 denotes an apparatus for turning over the surface of the treatment layer 14 for preventing the formation of a lump made of wood chips or the like.

Numeral 25 denotes a gas supply unit for supplying water vapor (activating gas) containing air to the microorganisms. The gas generation unit has a heater for converting water into steam, and the steam generated from the steam generation unit. Gas generating device 25a comprising an air pump for mixing and transporting air into the air, and a treatment layer for diffusing water-containing water vapor output from the activation gas generator 25a into the treatment layer 14. The gas diffusion part 25b is introduced into the side of the gas turbine 14 and a gas pipe 25c connecting the gas diffusion parts 25b to each other. Here, the temperature of the water vapor containing the air supplied into the treatment layer 14 is a temperature at which the aerobic microorganisms treating the organic component are activated, for example, 20 to 40 ° C.
It is set to be. The gas supply unit 25
Selects either air alone or water vapor containing air (the water vapor amount may be changed based on the monitoring result) while monitoring the internal state of the treatment layer 14 with a temperature and humidity sensor (not shown). Although it is preferable to control so as to supply the water vapor appropriately, the control may be performed so as to appropriately supply the water vapor containing the air, and the water vapor can be changed as appropriate.

In the primary treatment apparatus 10, when waste water containing garbage is introduced, the crushed garbage, which is an organic solid, is filtered and separated by the treatment layer 14, and the organic liquid (organic liquid) is separated. Wastewater) is treated layer 14, first auxiliary layer 16,
After passing through the second auxiliary layer 18, the water is discharged from the drain port 12 b via the corrugated sheets 20, 20.

In the treatment layer 14, the filler (microorganism carrier) is a porous material, microorganisms are easily retained and inhabited, and organic substances as nutrients are sufficiently supplied from waste water containing garbage. Since the air is sufficiently supplied from the voids, aerobic microorganisms proliferate. Therefore, organic solids (crushed garbage) and the like trapped in the treatment layer 14 are favorably decomposed by the aerobic microorganisms.

In this configuration, the processing unit 14 can be controlled to a preferable temperature at which aerobic microorganisms that decompose organic components are activated by the heat of the activating gas from the gas supply unit 25 without mounting a heater. Aerobic decomposition by aerobic microorganisms can be promoted.

Further, in the above configuration, the gas supply unit 2
The air and / or moisture from 5 can promote aerobic decomposition by aerobic microorganisms and adjust the water retention of the microorganism carrier so as to suppress the formation of clumps composed of microorganism carriers and the like in the treatment layer 14.

Reference numeral 26 denotes a reserve tank provided at the lower stage of the primary treatment device 10, and organic wastewater (primary treated water) discharged from the drainage port 12b is dropped and stored. Compressed air is supplied from an air pump 28 to the reserve tank 26, and an organic wastewater stored inside is aerated.

Reference numeral 30 denotes a secondary treatment device as an organic wastewater treatment device for treating organic wastewater (primary treated water) from the reserve tank 26.

The secondary processing device 30 includes a cylindrical container 32
A drainage treatment layer (drainage treatment part) 34 with a thickness of about 15 cm
a to 34d have a four-layer structure in which four layers are laminated via first auxiliary layers (first auxiliary parts) 36a to 36d each having a thickness of 2 to 3 cm, and are disposed in close contact with the first auxiliary layer 36d on the bottommost side. A second auxiliary layer (second auxiliary portion) 38.

The processing layers 34a to 34d have a size of 1.
This layer is filled with wood chips (microbial carriers) made of cedar sawdust of about 5 mm, and oxidatively decomposes organic components in the introduced organic wastewater by aerobic microorganisms that live inside them. It has a function to do.

Each of the first auxiliary layers 36a to 36d, which are disposed in close contact with the lower side of each of the processing layers 34a to 34d,
The porosity is set to be larger than the porosity of the wastewater treatment layers 34a to 34d, and has water retention, so that each treatment layer 34a to 34d and each first auxiliary layer 36a to 3d are provided.
The environment change at the boundary of 6d is reduced, and each processing layer 34a-
It has a function to promote discharge of wastewater from 34d. The first auxiliary layers 36a to 36d are specifically configured to be filled with foamed glass particles (porous glass particles) having a particle size of about 5 mm.

The second auxiliary layer 38 is a layer composed of a fibrous component (porous layer) closely adhered to the first auxiliary layer 36d, and has a porosity of the first auxiliary layer 36d. , The environmental change between the first auxiliary layer 36d and the second auxiliary layer 38 is reduced so that the first auxiliary layer 36d
Has the function of promoting the discharge of wastewater from The second auxiliary layer 38 has a mat shape formed by entanglement of a large number of hard plastic fibers having a wire diameter of about 0.5 mm.

In this configuration, the primary processing liquid in the reserve tank 26 is supplied by the water pump 40 to the reserve tank 26.
Water is supplied from a water sprinkling device 46 via a primary processing liquid supply pipe 42 connected to a processing layer 34a on the upper side of the container 32 via a filter 48 for trapping solids.
On the other hand, a drain pipe 44 is connected to the bottom of the container 32, from which treated water is drained.

In such a configuration of the secondary treatment device 30, the water pump 40 is driven to sprinkle the primary treatment liquid in the reserve tank 26 over the entire surface of the treatment layer 34 a in the container 32 by the water spray device 46. And the first auxiliary layer 36a-
Processing layers 34a to 34h constituting a four-layer structure through 36d
At 34d, it descends while being in contact with microorganisms that decompose organic components.

Here, reference numeral 50 denotes a gas supply unit for supplying water vapor (activating gas) containing air to the microorganisms. The gas supply unit 50 has a heater for converting water into steam, and the gas supply unit 50 has a heater. Activated gas generator 50a including an air pump for mixing and transporting air to generated steam
Then, the water vapor containing air output from the activation gas generator 50a is diffused from the side into the first auxiliary layers 36a to 36d, and the processing layers 34a to 34d are diffused through the first auxiliary layers 36a to 36d. And a gas pipe 50b for introducing the gas into the gas pipe. Here, the temperature of the water vapor containing air supplied into the processing layers 34a to 34d is set to a temperature at which the aerobic microorganisms that process the organic components are activated, for example, 20 to 40 ° C. In addition, this gas supply unit 50
While monitoring the internal state of the processing layers 34a to 34d with a temperature and humidity sensor (not shown), select either air alone or water vapor containing air (the amount of water vapor may be changed based on the monitoring result). It is most preferable to control so as to supply as appropriate, but it is also possible to control so as to appropriately supply steam containing air, and it is possible to change as appropriate.

In this configuration, the temperature inside the processing layers 34a to 34d can be controlled to a preferable temperature at which the aerobic microorganisms that decompose organic components are activated by the heat of the activating gas from the gas supply unit 50 without attaching a heater. Therefore, aerobic decomposition by aerobic microorganisms can be promoted.

Moreover, in the present configuration, the first auxiliary layers 36a to 36a
36d has a higher porosity than the processing layers 34a to 34d, and the gas is easily diffused. Therefore, the activation gas supplied to each of the first auxiliary layers 36a to 36d includes the activation gas supplied to each of the first auxiliary layers 36a to 36d. After being diffused satisfactorily over the entire area inside 36d, it is diffused to the processing layers 34a to 34d.
Efficiently diffuses all over 4d. Therefore, the processing layers 34a-
The microorganisms in 34d are sufficiently activated.

Further, in the above configuration, the gas supply unit 50
The aerobic decomposition by the aerobic microorganisms can be promoted by the air and moisture from the water, and the water retention of the microorganism carrier can be adjusted so as to suppress the formation of clumps composed of the microorganism carrier and the like in the treatment layers 34a to 34d.

Accordingly, the processing layer 34 in the secondary processing device 30
In a to 34d, aerobic microorganisms adhered and propagated well,
Organic components contained in the primary processing liquid from the secondary processing tank 10 can be effectively oxidatively decomposed.

Further, the secondary processing device 30 includes a processing layer 34a
To 34d in multiple stages. Processing layer 3
The primary processing liquid that has passed through 4a is dispersed in the first auxiliary layer 36a having a high diffusibility closely attached to the processing layer 34a, and is introduced into the next processing layer 34b. Reach. Therefore, the primary treatment water supplied from the upper part flows so as to spread over the entire treatment layers 34a to 34d, thereby preventing a flow path from being formed in a part of the treatment layers 34a to 34d.

As described above, the first auxiliary layers 36a-36
d instead of introducing an activation gas or the like into
An activation gas or the like may be directly introduced into a to d. Further, the method may be appropriately changed to another method.
It may be introduced from a location. However, each processing layer 34
In consideration of the uniformity of diffusion of the activation gas or the like into the active layers a to d, it is preferable to introduce the active gas from a plurality of layers.
An activation gas or the like is preferably supplied to 4a to 34d.

In the above description, air is supplied from the gas supply units 25 and 50, but it is needless to say that oxygen required by aerobic microorganisms may be used instead of air.

[0066]

According to the present invention, it is possible to provide a processing apparatus using a microorganism and a processing method using the microorganism, which can maintain the activity of the microorganism satisfactorily.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram of a solid-containing wastewater treatment device including an organic wastewater treatment device according to an embodiment of the present invention, as viewed from the front.

FIG. 2 is a schematic configuration diagram of a side view of a primary processing apparatus of the apparatus.

FIG. 3 is a schematic perspective view of a secondary processing device of the above device.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Primary processing apparatus 12 Container 14 Processing layer 16 1st auxiliary layer 18 2nd auxiliary layer 20 Corrugated sheet material 12b Drain port 25 Gas supply part 25a Activated gas generator 25b Gas diffusion part 25c Gas pipe 30 Secondary processing apparatus 34a- 34d treatment layer 36a to 36d first auxiliary layer 38 second auxiliary layer 50 gas supply unit 50a activation gas generator 50b gas pipe

Claims (15)

[Claims] 1. A processing apparatus utilizing a microorganism, comprising: a processing section for processing an organic object using a microorganism; and an activation gas for supplying an activation gas for keeping the microorganism active to the processing section. A processing device using microorganisms, comprising: a gas supply unit. 2. The method according to claim 1, wherein the organic substance is an organic liquid substance and / or
The processing apparatus using microorganisms according to claim 1, wherein the processing apparatus is an organic solid. 3. A treatment apparatus utilizing microorganisms, comprising: a treatment section for treating wastewater containing organic solids by utilizing microorganisms; and supplying an activation gas for keeping the microorganisms active to the treatment section. And a gas supply unit for performing the treatment. 4. A treatment apparatus utilizing microorganisms, comprising: a treatment section for treating organic waste water using microorganisms; and an activation gas for supplying an activation gas for keeping the microorganisms active to the treatment section. A processing device using microorganisms, comprising: a gas supply unit. 5. A treatment device utilizing microorganisms, comprising: a primary treatment device comprising a treatment section for treating wastewater containing organic solids by utilizing microorganisms; and a wastewater discharged from the primary treatment device. A secondary processing device comprising a processing unit for processing by utilizing microorganisms, wherein at least one of the processing unit of the primary processing device and the processing unit of the secondary processing device actively holds microorganisms. A processing apparatus using a microorganism, comprising: a gas supply unit for supplying an activation gas. 6. The microorganism according to claim 1, wherein the treatment unit is provided with an auxiliary unit on the drainage outflow side for promoting drainage from the treatment unit. Processing equipment. 7. A treatment apparatus utilizing microorganisms, comprising a treatment section for treating organic waste water using microorganisms and an auxiliary section for promoting drainage from the treatment section in this order,
A processing apparatus using microorganisms, comprising: a gas supply unit for supplying an activation gas for keeping the microorganisms active to the processing unit. 8. The processing apparatus using microorganisms according to claim 1, wherein the processing units are provided in multiple stages. 9. The apparatus according to claim 6, wherein a plurality of the processing units and the auxiliary units are provided, and the processing units and the auxiliary units are alternately stacked. Processing equipment using microorganisms. 10. The supply of an activating gas to the processing section,
7. The method according to claim 6, wherein the step is performed through the auxiliary unit.
A processing apparatus using the microorganism according to at least one of items 9 to 9. 11. The processing apparatus according to claim 6, wherein the auxiliary unit has a higher porosity than the processing unit. 12. The at least one of claims 1 to 11, wherein the processing section is made of a microorganism carrier.
A processing device using the microorganism according to Item. 13. The microorganism according to claim 1, wherein the activation gas is an oxygen-containing gas within a temperature range in which the microorganism that decomposes organic components is activated. Processing equipment utilizing 14. The microorganism according to any one of claims 1 to 13, wherein the activation gas is a steam-containing gas within a temperature range in which the microorganism that decomposes organic components is activated. Processing equipment utilizing 15. A treatment method using a microorganism, comprising:
A processing method using microorganisms, which comprises supplying an activating gas to microorganisms that treat organic matter.