JP2000296310A - Embeded type biological deodorizing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a biological deodorizing device in which the change in sunshine, wind, rain, etc., according to the season less influences microorganism bacterial cell and the bacterial cell is kept in a suitable surviving environment. SOLUTION: A module in which a gas circulating part for converting gas flow to downward stream, horizontal stream or upward stream is formed by disposing partition walls B1... in a horizontal tank, and bacterial cell packing layers P1... are provided at the inside of a horizontal circulating part and all of a storage water tank 11, a circulating pump, a water spray nozzle L1, etc., are housed in a body part, moreover, an open part is formed thereon is embedded underground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for deodorizing biologically by passing a malodorous gas generated from a sewage treatment plant or a wastewater treatment facility through a packed bed filled with a carrier on which microbial cells have been implanted. Related to biological deodorizing equipment.

[0002]

2. Description of the Related Art As a method for deodorizing odorous gas generated from a sewage treatment plant or a wastewater treatment facility, the running cost is low, instead of the physical treatment using a conventional adsorbent or the chemical deodorization method using a chemical solution. Attention is paid to a biological deodorization method that is easy to maintain.

In recent years, a packed bed (packing tower) system, which is compact and highly efficient and uses a packed carrier on which microorganisms have been implanted, has recently become mainstream.

[0004] Although a great number of proposals have been made for such a packed tower type biological deodorizing equipment, they all agree that the equipment is mainly an upright tower type equipment (for example, JP-A-5-421199, JP-A-5-261239, JP-A-5-261241, JP-A-6-7633, JP-A-7-24247, JP-A-7-31835, JP-A-7-80239, JP-A-7-155533, JP-A-7-274936, etc.).

[0005] Naturally, deodorizing equipment is a secondary equipment, which is not allowed to be so manually operated, and is basically operated substantially unmanned for several months to several years. Most of these towers are not equipped with instrumentation such as temperature control equipment or heat insulation, unlike ordinary chemical equipment because of their simple equipment, and are usually installed directly in one corner of a sewage treatment plant or the like. there were.

[0006] Since the biological deodorizing equipment uses microorganisms, when it is installed outdoors, it is actually necessary to pay attention to handling rather than a chemical cleaning method.
In other words, equipment installed outdoors is subject to changes in sunshine conditions during the summer to winter seasons, wind and rain, snowfall, and changes in the outside air temperature, etc., which have a considerable effect on microorganisms immobilized in the tower. Therefore, it is not always easy to always maintain an appropriate environment for the living environment of microorganisms in a tower-type facility that is operated unattended. In fact, shocks due to a drastic change in the environment, such as a decrease in the temperature of the tower due to a decrease in the outside air temperature in a severe winter, or overheating in the tower due to a severe heat in the summer, often attack the microorganisms in the tower, so that the microorganisms lose their odor decomposition ability, In the worst case, the situation is almost extinct, and in order to restart the equipment, it has been necessary to restart the process of implanting the microorganisms over several weeks.

[0007]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a deodorizing bacterial cell which is less affected by seasonal changes in sunshine, wind and rain, snowfall, outside temperature, etc. An object of the present invention is to provide a biological deodorizing facility maintained in an appropriate living environment.

[0008]

According to the present invention, there is provided a cell-filled layer filled with a carrier on which microbial cells have been implanted, and a odorous gas is passed through the layer to carry out deodorization. In a horizontal tank type biological deodorizing equipment comprising a body portion and lids at both ends thereof, in which malodorous gas is introduced from one end of the tank and discharged from the other end,

(1) Along the longitudinal direction of the body,
Partition wall B hanging from above the body₁ , B _Two , ..., B
_iOdor gas flow from installation to discharge
Gas flow sections C with downward flow, horizontal flow, and upward flow
₁ , C_Two , ..., C_jAnd the gas flows horizontally.
Forming the cell-filled layer in the flow section,
(2) At the bottom of the body,
A storage tank, circulating pump means for circulating the stored water, and
And a sprinkling nozzle for sprinkling stored water from above the packed bed
A watering system comprising:
(3) At least the packed bed and the circulation pump
Above the body of the stairs, these can be taken out of the tank.
Openings to form a deodorizing equipment module.
Buried type with at least part of the tool buried underground
Deodorizing equipment is provided.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a partially cutaway perspective view of a biological deodorizing equipment module according to the present invention, FIG. 2 is a cross-sectional explanatory view showing a state where this module is buried underground, and FIG. It is a model figure explaining the situation where a gas distribution part is defined in a body part by a partition wall.

The biological deodorizing equipment 1 used in the present invention is different from a conventionally known upright tower type, and is basically a cylindrical body 3 and a lid for closing both ends thereof as shown in FIG. This is a horizontal tank type in which a tank type can body composed of the bodies 5 and 5 ′ is set horizontally. Here, the vertical cross-sectional shape of the cylindrical body forming the body portion is arbitrary, such as a circle, an ellipse, a square, a rectangle, a round square, a round rectangle, and the like. Anything can be used. Usually, a circle, an ellipse, a round square, or the like is preferable. The lid may be flat, but may be outwardly curved, so-called a mirror plate.
The offensive odor gas is introduced from one end of the tank, for example, from a gas inlet 7 provided on one lid 5, and from the other end, for example, from a gas outlet 9 provided on the lid 5 ′ or an upper part of the body near the lid 5 ′. Is discharged.

Here, along the longitudinal direction of the body,
Partition wall B hanging from above₁ , B_Two, ..., B_iTo
The gas flow path is defined as downflow, horizontal flow, and upflow,
Number of gas distribution department C₁ , C_Two , ..., C_jForm
You. The bottom of the cell packed bed is held by the bottom plate 10.
At least one of the hanging partition walls (B in FIG. 3_Two And
B_Three ) Fits into this cell-filled layer and is in contact with the bottom plate.
An opening for gas to flow between them is formed. this
The partition wall is about 1/2 to 1/4 of the filling layer depth (filling height)
Degree, preferably about 1/3
The clearance between the tip of the partition wall and the bottom plate
Mouth. The partition wall hangs from above the body
Yes, gas is bypassed to parts other than the distribution section defined above
It also has the function of preventing flow and leakage
Things. In addition, one of the partition walls (B ₁ ) And the bottom plate
The opening formed provides an inlet for the gas into the packed bed and another
One (B _Four ) Forms a gas outlet.

For example, in FIG. 3, a lid 5 and a partition wall B ₁ hanging down from above the body portion are provided with a flow portion C ₁ (downflow portion C ₁ ) for introducing gas into the cell-filled layer and a hanging portion C ₁ hanging from above the body portion. circulation section C ₂ partition wall B ₁ and B ₂ are to horizontal flow of gas
(Horizontal flow section C ₂ ) is formed. The partition wall B ₂ and B ₃ depending from the body portion above in a similar manner the horizontal flow section C _3, the partition walls B ₃ and B ₄ form a horizontal distribution unit C _4. Further, a partition wall B ₄ hanging down from the upper part of the body and a partition wall B ₅ hanging down from the upper part of the body to the lower part of the body, a flow part C5 in which gas flows downward, and a partition B ₅ and a lid 5 ′ rise. to form a distribution unit C _6.

[0015] Incidentally, separately installed fine ducts inside the distribution unit C _1, so as to flow in the duct of the gas, and partition the portion does not flow the other gas, to form a window viewing here, It is also possible to perform a visual check of the carrier and the like.

The malodorous gas introduced into the apparatus from the gas inlet 7 flows down the flow section as shown by the arrow in FIG.
The gas flows through a horizontal flow, a downward flow, and an upward flow, and is finally discharged from the gas outlet 9.

As described above, the partition wall hanging down from the upper part of the body has appropriate clearances d ₁ , d ₂ , d ₃ , d _4, etc. between its tip and the bottom plate 10 of the filling layer. It is preferable that an opening is formed and the adjacent flow parts communicate with each other through the opening (d _{1 to} d _{4 in the} drawing).
Is a gap with the bottom plate, and d 'is a gap with the body bottom.
). These openings may be formed with a large number of holes, slits, and the like to hold the cell-filled layer. Further, the bottom of the body may be a storage tank for circulating water as described later.

In the present invention, the cell-packed layer filled with the carrier on which the microbial cells have been implanted is formed inside the flow path of the flow section in which the gas flows horizontally. The malodorous gas flows in from one side of the cell packed bed, passes through the packed bed in contact with the carrier, and flows out from the opposite side of the packed bed.

The cell-filled layer may be a single chamber, but is preferably divided into a plurality of chambers (a plurality of layers) by a partition wall, and divided into 2 to 6 layers, more preferably about 2 to 4 layers. It is more desirable to have a plurality of layers formed. In that case, FIG.
As shown in the flow section where the gas flows horizontally (for example, C ₂ , C
₃ , C ₄ ), the filling layers P ₁ , P ₂ , and P ₃ are formed so that gas flows in from one side of the filling layer and flows out from the opposite side. K indicates an activated carbon adsorption layer described later.

Thus, the odorous gas is brought into contact with the cell-packed layer.
By passing through, the odor components in the malodorous gas are subjected to metabolic action of cells such as sulfur oxidizing bacteria and ammonia oxidizing bacteria,
On the other hand, it is oxidatively decomposed, and as a result, an acid such as sulfuric acid or nitric acid is generated and the pH is lowered. Therefore, it is necessary to wash the generated acid by flowing washing water from above the packed bed at appropriate time intervals.

When the malodorous gas is introduced from the side of the packed bed, the generation of sulfuric acid or nitric acid is maximum near the introduction part, that is, the gas inflow part into the packed bed, and gradually decreases as going downstream. The most problematic part of the gas at the gas inflow into the packed bed, which naturally flows down in the bed due to gravity,
It is discharged relatively quickly out of the layer or can be easily removed by intermittent washing, and in any case, does not contaminate the cells downstream therefrom.

The carrier for forming the filling layer is not particularly limited, and a carrier known per se can be used. For example, various porous ceramic materials and foamable synthetic resin materials having a spherical shape, a triangular shape, a square pillar shape, a gear-shaped pillar shape, an irregular shape, a Raschig ring shape, a saddle shape, and the like are preferably used. It is also possible to use natural or synthetic fibrous organic substances, coal distillate, peat, charcoal and the like.

The layer height and cross-sectional area of each packed bed can vary depending on the flow rate and gas composition of the malodorous gas to be treated.
(Space velocity) is 100~1000h ^-1, more preferably set to be about 200~800h ^-1. Also,
LV (empty tower linear velocity) is 0.05-0.5, msec
⁻¹ , preferably 0.1 to 0.3 m · sec ⁻¹ .
Usually, the layer height is 200-3000 mm, preferably 8
Approximately 00 to 2000 mm, cross section of packed bed is 0.1 to 10
m ^2, more preferably from about ² 0.2～8M. In addition, the length (lateral distance) of the packed layer is 1,000 to 50,000.
About 00 mm, preferably 2,000 to 4,000 mm
It is about.

In the present invention, as shown in FIG. 2, circulating water is stored at the bottom of the body of the horizontal tank, and this is used as a circulating water storage water tank 11. The storage water tank may be provided on the entire bottom surface.However, as will be described later, when an activated carbon adsorption layer or the like is installed on the downstream side, a bottom step 25 is formed, and the range of the storage water tank is set in the first half of the body (upstream). It is preferable to limit to part).

A watering nozzle means 13 is provided above the packed bed, and the stored water is circulated by a circulation pump means 15.
The water is conveyed onto the packed bed through the pipe line 17 and sprayed from the upper watering nozzle 13 of the packed bed. The feature of the present invention is that the sprinkling system including the storage water tank, the circulating pump means and the sprinkling nozzle means is all provided in the body, including the circulating pump means 15 and the piping line 17, and the equipment is a single module. One.

The type of the circulating pump means 15 is not particularly limited. As shown in the figure, the circulating pump means 15 may be a submersible pump (or a throwing pump) of a submersible type so that it can be installed in a storage tank. preferable. In addition, another such submersible pump is installed separately from the circulation pump, and drainage pump means 1 for draining water from the storage tank is provided.
It is also possible to use as 6. These submersible pumps are preferably constructed of a corrosion resistant material.

The type of the nozzle constituting the water spray nozzle means 13 may be any type as long as the circulating water stream can be evenly sprayed on the surface of the filling tank, and may be of any type, for example, as shown in FIG. A watering pipe L ₁ having many holes 19,
L _2, L _3, and ... it can be configured by extending the branch from the main pipe line. The watering pipes may be arranged radially or concentrically. The amount of water sprayed may be the same in each of the packed beds P ₁ , P ₂ , P ₃ ,..., But may be changed according to the amount of acid generated. That is, P ₁ with a higher acid generation amount is maximized, and P ₂ ,
It is also possible to reduce P ₃ ,. For this purpose, watering pipes L ₁ , L ₂ , L ₃ ,.
・ ・ The number may be changed from upstream to downstream.
You may simply change the watering time according to each watering amount.

As already mentioned, the filling layer is provided on the bottom plate 10.
The bottom plate is provided with a pipe extending downward, and the washing water or the like flows down the pipe and is discharged to a lower storage tank.

In the present invention, it is preferable that an activated carbon adsorption layer K is provided downstream of the cell-packed layer, and the treatment gas passed through the cell-packed layer is further contacted to perform adsorption treatment.

When a high-concentration malodorous gas enters due to the concentration fluctuation of the gas at the entrance of the cell packed bed, the biological treatment is not sufficiently performed.
The residual malodorous component in the processing gas that may leave the cell packed bed can be surely adsorbed by the activated carbon adsorption layer and discharged to the atmosphere.

Further, in the activated carbon adsorption layer, since only a very low concentration portion of the processing gas after the biological treatment in the cell packed bed is processed, only a very long time is required until the breakthrough point is reached. Can be used.

On the other hand, when the malodorous gas is deodorized by contacting with the activated carbon adsorbing layer without biological deodorization, high concentration malodorous components which can be easily treated by other inexpensive means are originally expensive. The treatment with activated carbon is irrational, and the activated carbon reaches a breakthrough point in a short time, which can be said to be a large waste of resources.

The activated carbon to be used may be one usually used for deodorization, and is not particularly limited.
For example, a coconut shell-based material having a particle size of 4 to 8 mesh is preferably used.

In the present invention, it is preferable to provide a blower means 22 having a function of sucking the malodorous gas into the apparatus and forcing the gas into the activated carbon layer inside the body. The installation site of the blower means is basically
It may be located anywhere within the body, but is preferably provided downstream of the cell-packed layer, more preferably in a gas flow section interposed between the cell-packed layer and the activated carbon adsorption layer. In the example of FIG. 2, the gas flow section C _{4 in} which the packed layer P ₃ is formed
And a circulation section C between the circulation section C ₆ provided with the activated carbon adsorption layer K.
₅ is provided with a blower means 22 for sucking out the odorous gas treated in the packed bed,
And push it in.

[0035] The gas from the distribution part C ₄ sucks the wire mesh or folded plate or the like by the blower means 22 through the mist separator 24, the separator material, activated carbon adsorption after collecting only possible entrained mist gas Preferably, it is introduced into the layer. Further, in the module of FIG. 1, to effectively utilize the blower capacity, between the partition walls B ₄ and B _5, provided a smaller flow section C _l, gas through the flow path so as to suck in the blower means ing.

Activated carbon is most preferred as the adsorbent, but depending on the type of malodorous component, an adsorbent such as alumina gel or acid clay may be used together with or instead of activated carbon.

In the present invention, as shown in FIG. 2, at least above the body filled layers P ₁ , P ₂ , P ₃ and the body of the circulating pump means 15, these can be taken out of the tank. forming an opening _{(manhole) X 1, X 2, X} 3 , or the like. That is, at the time of regular maintenance, the filling material and the circulation pump are taken out (by lifting or the like) (or refilled or reinstalled) through the opening. In addition, these inspections
Maintenance is also performed through the opening. In addition, when the blower means 22, the activated carbon layer K, the drainage pump means 16 and the like are provided, the openings X ₄ , X ₅ , X ₆ are also provided.
It is preferable to provide for example. The opening is also used,
Some may be provided collectively. The opening is usually not closed by a lid or cover, but malodorous gases sealed tank is prevented from leaking, the opening X ₅ also serving as a outlet for clean gas after the treatment, the atmosphere It opens inside and does not need to be completely closed.

The deodorization equipment module is formed as described above, and FIG. 1 shows an example of the deodorization equipment module thus formed. In the present invention, at least a part of the deodorization equipment module is buried underground to provide a buried biological deodorization equipment.

In this case, more preferably, almost all of the deodorizing equipment module is buried underground so that there is almost no portion exposed above the ground. More preferably, it is buried deep underground as much as possible in order to make it less susceptible to sunshine and climate change on the ground surface.However, the geographical location of the burial site, annual climate change, sunshine, rainfall, snowfall, soil quality In consideration of the slope, etc., an appropriate depth is selected and buried. Normally, simply burying the entire module near the surface of the earth has a considerable effect.

The module of the present invention is made of a material which is easy to process and has corrosion resistance, for example, a thermoplastic resin, a thermosetting resin,
It is formed by FRP or the like. It is also possible to divide it into several flanged units to facilitate transportation to the installation point and to assemble it at the time of use or at the installation point.

FIG. 2 shows a state where almost the entire module shown in FIG. 1 is buried near the ground surface.

Hereinafter, an operation for deodorizing using the buried type biological deodorizing equipment will be described with reference to the drawings.

First, microbial cells are implanted in the carrier-packed layer. The sludge water in the activated sludge tank of the sewage treatment plant or the liquid obtained by culturing the cells in the activated sludge is supplied to the storage water tank 11 at the bottom of the tank through the water supply line 18, and the circulation pump means 1
5 and the packed beds P ₁ , P ₂ and P
_From the watering nozzle means 13 provided on the upper part ₃ , sludge water or the like is sprayed and circulated. By continuously spraying this sludge water for about 2 to 4 weeks, the cells adhere to the carrier and the implantation is completed.

Although not shown, the water supply line 18
May be directly connected to the watering nozzle means 13 to introduce activated sludge water or the like from outside the tank, and water may be directly sprayed from the watering nozzle means. In this case, the excess sludge is
By activating the drainage pump means 16 and the like of the storage water tank, the water is discharged out of the tank through the drainage lines 20 and 21 and the like.

Thereafter, a malodorous gas to be treated is introduced.
The malodorous component of the malodorous gas targeted by the present invention is hydrogen sulfide,
Methyl sulfide, methyl disulfide, methyl mercaptan, trimethylamine, ammonia, etc., as already mentioned, usually in odorous areas such as sewage treatment plants, wastewater treatment plants, human waste treatment plants, food factories, pulp factories or fertilizer factories. What happens.

The malodorous gas G is introduced from the malodorous gas inlet 7 to deodorization equipment 1 as G _i, first flows down the descending flow section C _1, the side surface of the cell filling layer P ₁ formed in the horizontal distribution part C ₂ next And exits from the opposite side of the layer. While the gas passes through the packed bed, it comes into contact with bacterial cells supported on the carrier, and the malodorous substances in the malodorous gas are decomposed. Malodorous gas treatment in the first stage is then, a packed bed P ₂ middle of the horizontal distribution part C ₃ of the adjacent horizontally passes, the processing of the second stage by bacteria in the same manner is performed. Malodorous gas treatment of the two-stage been then, the medium-filled layer P ₃ next to the horizontal distribution part C ₄ horizontally pass, processing of the third stage by bacteria in the same manner is performed.

The gas subjected to the biological treatment in this way is
Finally, the air is sucked by the blower means 22 through the mist separator, and is preferably sent to the activated carbon adsorption layer K provided in the ascending flow section C ₆ , where untreated malodorous components are adsorbed and removed, and the odor components are removed from the opening X ₅ It is discharged as a clean gas _Go . The opening X _5, as already mentioned, also serves as the outlet of the clean gas, a manhole for occupying become subjected to replacement of the activated carbon operations, and the like.

Since the cells break down sulfur-based and amine-based odor components by metabolic action and become odorless and generate acids such as sulfuric acid and nitric acid, the cells are required to maintain the activity of the cells implanted on the carrier. Operating the circulation pump means 15 intermittently,
Alternatively, it is preferable to wash the generated acid by introducing cleaning water through the water supply line 18 and intermittently spraying water from above the packed bed. The cleaning interval is not particularly limited,
For example, if the interval is 3-15 minutes / 15 minutes (3-15
Disperse water and stop for 15 minutes). The intermittent watering operation is preferably performed by turning on / off a switch such as a circulating pump unit according to a sequence chart or by using a timer.

[0049]

EXAMPLES The present invention will now be described specifically with reference to examples, but the technical scope of the present invention is not limited to these examples.

Example 1 The deodorizing equipment used was the one shown in FIG. As a filling layer, a cylindrical ceramic carrier is filled to a filling height of 1500 mm and a length of 3200 mm,
The chamber was divided into three chambers (three layers) by partition walls. Gas superficial velocity 2
00h ^-1 and the superficial linear velocity of the packed bed is 0.2 msec
^{It was set to -1} . As activated carbon, 4 to 8 mesh coconut shell activated carbon was used and filled to a height of 400 mm to form an activated carbon adsorption layer.

After the activated sludge of the sewage treatment facility was used for two weeks for the landing treatment, the raw odor gas from the sewage treatment facility having the composition shown in Table 1 was introduced into the apparatus and treated. The interval of the washing operation was 15 minutes / 15 minutes.

After the analysis value was stabilized after a 5-day acclimatization period, the introduced original odor gas, the gas at the outlet of the third-stage packed bed and the gas at the outlet of the activated carbon adsorption layer were collected and analyzed. In the table, “intermediate gas” is the gas composition at the outlet of the third packed bed, and “treatment gas” is the gas composition at the outlet of the activated carbon adsorption layer.

The analysis of the offensive odor component was carried out in accordance with the method for measuring the offensive odor specified by the Offensive Odor Control Law. The measured value was an average value of three samples.

Each of the removal rates Y is represented by an inlet concentration x of each component.
_i and the outlet concentration x _o were calculated by the following equation (1). Y = _{[(x i -x o) / x} i ] × 100 (%) (1)

The experiment was performed for one year starting from January. The results are shown in Tables 1 to 4. Table 1 shows the measurement at the start of the experiment (January), Table 2 shows the measurement in May, Table 3 shows the measurement in August, and Table 4 shows the measurement in December.

A cold wave occurred once in February on the way, and the heat became extremely hot in August, but the activity of the bacterial cells was maintained relatively stable throughout the year. The operation of the deodorizing device was smooth, and there was no need to interrupt and restart the device.

Comparative Example 1 The deodorizing equipment was the same as that shown in FIG. 2, but was used as a ground-installed type. This was installed near the apparatus of Example 1, and an experiment was performed for one year in parallel with Example 1.

Table 5 shows the measured values at the start of the experiment (January). In addition, as described above, there was a cold wave in February, and the temperature inside the device was extremely lowered, and the activity of the bacterial cells was significantly reduced.
It took about three weeks to restart. Table 6 shows data for August. It can be seen that the temperature inside the apparatus exceeded 40 ° C. during the day due to the intense heat and direct sunlight as described above, and the activity of the bacterial cells began to decrease. The activity continued to drop dramatically due to the continued intense heat. This restart took about three weeks.

[0059]

[Table 1]

[0060]

[Table 2]

[0061]

[Table 3]

[0062]

[Table 4]

[0063]

[Table 5]

[0064]

[Table 6]

[0065]

(1) According to the present invention, a biologically packed bed is provided in a tank, and a watering system including a storage water tank, a circulation pump means, a watering nozzle means, a blower means, etc. are all provided in this tank. As a single module, and this module is a buried type biological deodorization facility buried underground, so changes in the ground such as sunshine, wind and rain, snowfall, outdoor temperature due to seasons are buried underground by buffering soil. There is little direct effect on the microorganisms in the tank, and the cells that perform the deodorizing action are always maintained in an appropriate living environment. In addition, since the equipment is of a buried type, light shielding is sufficient and there is little adverse effect on microorganisms.

(2) Since the facility of the present invention is an underground facility, vibration and noise generated from rotating equipment such as a circulation pump and a blower can be reduced from leaking to the outside. Can be reduced.

(3) The deodorizing equipment of the present invention is used as a horizontal tank type, and all the openings such as manholes are provided at a position where they can be easily accessed. Without the use of cumbersome crane equipment and crane operation, which was indispensable for tower type biological deodorization equipment, the exchange of carriers and activated carbon,
Inspection and maintenance of pumps and blowers are easily performed.

(4) The buried type equipment of the present invention is buried underground with all pumps and blowers housed in the module. Especially when the whole module is buried underground, no structure is exposed on the ground. Because it is not exposed to the sea, it is very preferable in protecting the natural scenery.

(5) Further, since the buried type facility of the present invention is buried underground as a module, the seismic intensity in the case of an earthquake is reduced, and the standard for seismic design is further reduced.

[Brief description of the drawings]

FIG. 1 is a partially cutaway perspective view of a biological deodorization equipment module according to the present invention.

FIG. 2 is a cross-sectional explanatory view showing a situation where a module is buried underground.

FIG. 3 is a model diagram illustrating a situation where a gas flow passage is defined in a body by a partition wall;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Biological deodorizing equipment 3 Body of tank 5, 5 'lid 7 Gas inlet 9 Gas outlet 10 Filling tank bottom plate 11 Reservoir tank 13 Sprinkling nozzle means 15 Circulation pump means 16 Drainage pump means 17 Piping line 18 Water supply line 19 watering pipe holes 20 discharge line 21 discharge line 22 blower means 24 mist separator 25 bottom step _{B 1, B 2, B 3} , B 4, B 5 partition wall C ₁ hanging down the torso, C _2, C _3, C _4, C _5, C ₆ gas distribution part C _l a small flow section G _i inlet malodorous gases G _o outlet malodorous gases (clean gas) K activated carbon adsorption layer _{L 1, L 2, L 3} , L 4, L 5 watering pipe P ₁ , P ₂ , P ₃ packed bed X ₁ , X ₂ , X ₃ , X ₄ , X ₅ , X ₆ opening _xi gas inlet concentration _xo gas outlet concentration d ₁ , d ₂ , d ₃ , d ₄ partition Clearance between the end of the wall and the bottom plate d 'The end of the partition and the body Clearance between the part bottom

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D002 AA03 AA05 AA13 AA14 AB02 BA04 BA16 BA17 CA07 DA35 DA41 DA46 DA47 DA59 EA02 GA03 GB01 HA01

Claims (6)

[Claims] Claims: 1. A carrier filled with microbial cells is filled.
Equipped with a cell-packed layer, through which odorous gas is passed
It consists of a cylindrical body and the lids at both ends for deodorization.
This is a horizontal tank type biological deodorization facility,
In the case of introducing from the end and discharging from the other end, (1) before
Along the longitudinal direction of the body part, it hangs from above the body part
Partition wall B₁ , B _Two , ..., B_iFrom the introduction and introduction
Downstream, horizontal, up
A plurality of gas circulation sections C for ascending flow₁ , C_Two , ..., C
_jAre sequentially defined, and the gas flows in the flow section where the flow is horizontal.
Form a cell-packed layer and allow odorous gas to pass through and contact
(2) circulating the stored water with the storage tank at the bottom of the body.
Circulating pump means for circulating, and above the packed bed
Spraying system consisting of spraying nozzle means for spraying stored water
A stem in the body, and (3) at least
Above the body of the packed bed and the circulation pump means,
Deodorization by forming an opening that allows these to be taken out of the tank
Equipment module, at least a part of the module
A buried type biological deodorization facility that is buried underground. 2. The bottom of the cell-filled layer is held by a bottom plate, and at least one of the hanging partition walls fits into the cell-filled layer, and gas flows between the cell and the bottom plate. 2. The buried type biological deodorizing facility according to claim 1, wherein an opening is formed. 3. The buried biological deodorizing facility according to claim 1, wherein substantially all of the deodorizing facility module is buried underground. 4. The buried type biological deodorization facility according to claim 1, wherein an activated carbon adsorption layer is provided downstream of the cell packed bed to make contact with gas passing through the cell packed bed. 5. The buried type biological deodorization facility according to claim 1, wherein a blower means for sucking the malodorous gas into the apparatus is provided inside the body. 6. The method according to claim 1, which is used for a buried type biological deodorization facility.
The deodorizing equipment module according to any one of claims 1 to 5.