JP2002086170A - Preliminary fermentation device of fermentation bacteria for sewage treatment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease time corresponding to treatment after introducing fermentation bacteria for cleaning treatment, quantity of use of the bacteria and to shorten time of fermentation treatment by equipping a portable preliminary culture device nearby a sewage treating tank and preliminarily cultivating various kinds of fermentation bacteria. SOLUTION: A fermenting tank 20, a heating apparatus 22, a drawing pump 30, various kinds of bacteria storing tanks 50a, 50b and 50c, and various kinds of bacteria supplying pump tanks 52a, 52b and 52c are equipped in a casing 10 with casters. Various kinds of hose connecting parts 32, 32b and 32c are arranged at the outer face of the casing 10.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a medium-scale sewage treatment apparatus for pre-cultivating anaerobic bacteria, aerobic bacteria, and other odor-removing bacteria used in large quantities in recent years.

[0002]

2. Description of the Related Art In recent years, anaerobic bacteria, aerobic bacteria, mixed bacteria thereof, or anaerobic / aerobic bacteria (hereinafter referred to as purification fermentation bacteria) have been used even in a medium-scale sewage treatment apparatus. A large amount of fermentative bacteria that remove odors or deodorants, so-called cleaning bacteria that decompose adhering substances that adhere to purification facilities, various pipes, and the like have been used. However, most of this kind of medium-scale sewage treatment equipment is provided with 2 to 5 treatment tanks (anaerobic filter bed tank, contact aeration tank, etc.) of about 5 to 30 tons in parallel. When using the treated bacteria, the bacteria are directly introduced into these treatment tanks, or one of the treatment tanks is used as a preculture tank. Therefore,
The size of the preculture tank is as large as 5 to 30 tons. Therefore, the amount of bacteria to be added is also large, and the sewage, manure, and the like supplied to the culture tank are not at a temperature suitable for the initial culture of the bacteria, and require a considerable time until the bacteria are activated,
The processing capacity is reduced, and to compensate for this, the amount of bacteria used must be further increased, thereby increasing the processing cost. Further, if the 5 to 30 ton tank is heated to a temperature suitable for culturing, considerable heat energy is required, which increases the cost of sewage treatment, which is not realistic.

[0003]

Therefore, the present invention provides good conditions for the growth of bacteria at the beginning of the various bacteria, starts vigorous propagation at an early stage, and sequentially supplies them to the treatment tank. Provide the market with a device that minimizes the amount of bacteria used and improves the capacity of the treatment tank. Place it near the existing treatment tank and simply connect it with a hose. This is to make it possible to use a manure processing device.

[0004]

SUMMARY OF THE INVENTION In order to achieve the above-mentioned object, the present invention provides a processing tank for supplying and discharging a treatment liquid in a culture tank, a storage tank for several fermentation bacteria, It further comprises several bacteria supply pumps and bacteria supply pipes for supplying fermentation bacteria liquid to the culture tank, a nutrient storage tank and a supply device for supplying nutrients to the culture tank, and pumps the treatment liquid into the culture tank. A pump is provided in or near the casing, and the culture tank is cylindrical and has a hollow rotating shaft perpendicular to the center thereof, and the hollow rotating shaft has a tip end of a radially protruding arm bar. A stirring plate long in the axial direction of the culture tank is fixed, and the outer edge of the stirring blade is brought into extremely close or light contact with almost the entire length of the inner peripheral surface of the culture tank, and the outer end of the hollow rotary shaft is Is connected to an air supply and An air blowing pipe is provided protruding in the radial direction near the bottom of the part of the empty rotating shaft in the culture tank, and the air blowing pipe communicates with the hollow hole of the hollow rotating shaft. The surface is equipped with a heating device, which is a preliminary fermentation device for sewage treatment fermentation bacteria.

[0005] In order to achieve the above object, the casing in the preliminary fermentation apparatus for sewage treatment fermentation bacteria is substantially hermetic, and is divided into a first chamber and a second chamber. , The first chamber includes the culture tank and a heating device,
The second room is equipped with several fermentation bacteria storage tanks and an air conditioner,
The first chamber and the second chamber are shut off from the air flow, and the outer wall surface of the second chamber is provided with a fermentation bacterium supply port communicating with the fermentation germ storage tank or a door that can be opened and closed at the time of fermentation germ supply, It is preferable that connection ports for a stock solution supply hose, a treated water discharge hose, and a drain discharge hose are provided in a part of the outer wall of the first chamber.

In order to achieve the above object, a control device is provided in a part of the second chamber of the preliminary fermentation device for sewage treatment fermentation bacteria, and a control panel surface of which is exposed to an outer surface of the casing. In the control device, start and stop of the processing solution pump and circulation pump, temperature control device of the culture tank by heating device, start and stop of several bacteria supply pumps, start and stop of air supply source,
In addition, it is preferable that an input unit for starting and stopping the ventilation device is provided. Further, in order to achieve the above object, the operation panel surface of the control device of the preliminary fermentation apparatus is housed in a casing instead of being exposed to an outer surface of the casing, and only an independent operation is performed on a portion corresponding to an operation wall surface. In some cases, a door for a wall is provided. In order to achieve the above object, it is preferable that a circulation pump is connected to the culture tank in the preliminary fermentation apparatus for sewage treatment fermentation bacteria via a circulation pipe. In order to achieve the above object, the pump for pumping the fermentation apparatus for sewage treatment fermentation bacteria is provided in a first chamber in the casing.

Operation of the Invention In the above-mentioned specific invention, in order to use it, this apparatus is moved and fixed using a caster to a place where the stock solution for treatment is easily collected and the preculture solution is easily released. Next, when the pump is in the casing (invention of claim 6), each of the stock solution supply hose, treated water discharge hose and drain discharge hose provided on the outer surface of the casing is provided. The hoses are connected to the connection ports, respectively, and the other ends of the hoses are dropped to the most upstream one of the processing tanks. Alternatively, it may be a liquid receiving tank aeration sand settling tank or a flow rate adjusting tank upstream of the processing tank. When the pump is outside the casing, the primary side hose is put in the undiluted solution pumping tank, and the secondary side hose is connected to the processing liquid supply pipe provided in the casing. When the operation of the processing liquid pump is instructed from the input section of the operation unit of the control device C, and the operation is performed, the processing liquid is pumped through the hose outside the casing, the pipe in the casing and the pump. The stock solution in the tank is continuously pumped into the culture tank. Usually, this type of treatment tank may be charged with the above-mentioned purification-treated fermentation bacterium at the start of operation, which does not hinder the use thereof. When the culture tank reaches a predetermined amount, the pump is temporarily stopped.

Next, the power of the heating device is turned on from the input unit, the temperature of the culture tank is heated to a temperature suitable for culture, and this temperature is maintained until the end of use.

On the other hand, different fermentation bacteria are usually supplied to the respective fermentation bacteria storage tanks through a supply port on the outer wall surface of the casing or by opening the door of the second chamber. next,
When the purified fermentation bacteria are used, the corresponding bacteria supply device of the fermentation bacteria storage tank is operated to supply the purified fermentation bacteria to the culture tank. At the same time, the hollow rotary shaft is rotated by the motor and an air supply source is operated to supply air into the culture tank from the hollow rotary shaft and the air blowing pipe. If necessary, the culture nutrient is also supplied to the nutrient tank, and the nutrient supply device is also operated to supply the culture nutrient to the culture tank. At the same time, when using a deodorizing or deodorizing fermentation bacterium, a deodorizing or deodorizing fermentation bacterium is cultured in another fermentation bacteria storage tank in which the deodorizing or deodorizing fermentation bacterium is stored in the same manner as the septic tank fermentation bacterium. To supply. Generally, it is preferable to supply the deodorized or deodorized fermentation bacteria prior to the other bacteria. Further, as a measure for cleaning the purification facility and reducing the amount of dirt, so-called cleaning bacteria described in the section of the related art are put together and adhere to the inside of the culture tank, various pipes, hoses and various control valves. Prevents the formation of deposits. In the above-mentioned handling method, in the early stage of the operation, when the culture tank is once full, the method of temporarily stopping the pump is described.However, the operation of the pump and the operation of the circulation pump are continued to sequentially process the pump. The liquid may be returned to the purification tank, and any of these methods can be adopted.

When the fermentation in the culture tank becomes active, the grown culture solution is returned to the tank from which the stock solution was collected or the processing tank.
At this time, it is natural that the amount of the culture solution to be returned is substantially constant, and the pumping amount is adjusted so that the liquid level in the culture tank becomes constant.

In the above-mentioned culture tank, since the outer peripheral wall is heated by a heating device, a part of the components in the processing solution may adhere to the inner peripheral surface and may reduce heat conduction. In the apparatus of the present invention, since the stirring plate has the above-described structure, the inner wall surface of the culture tank is constantly wiped or scraped off by the stirring plate, and the stirring is performed. The heat is transferred to the processing solution, and the heat conduction does not decrease. When a cleaning bacterium is introduced into the culture tank, the solid substances adhering to the inner peripheral surface of the culture tank are also decomposed, and work together with the above-mentioned stirring plate to remove them.

According to the second aspect of the present invention, in addition to the operation of the specific invention, the casing is formed in the first chamber and the second chamber as described above.
The fermentation bacteria storage tank and other components are divided into separate rooms, and the second room is equipped with an air conditioner. When replenishing the fermentation bacteria into the fermentation bacteria storage tank, even if the lid of each fermentation bacteria storage tank or the lid of the second chamber is opened, the odor of the culture tank does not affect the door of the second chamber or the like. Does not emanate from the lid and does not degrade the working environment. Also, even in cold regions, the second chamber is kept at an appropriate temperature, so that it does not freeze or cool, and the various fermentative bacteria for purification treatment do not decrease in the reproductive function or die.

According to the third aspect of the present invention, there is provided the second aspect.
In addition to the operation of the invention described above, the operation of various operating devices such as a heating device and an air supply device is controlled by a control device, and the operation panel surface is exposed to the outer surface of the casing. Can be performed on the outer surface of the casing. In addition, since the control device is in the second room, the air conditioner does not expose the second room to humidity or corrosive gas generated from the culture tank, which is at an appropriate temperature and humidity. Does not corrode, and there is no danger of various fermentation bacteria growing during storage. In the invention according to claim 4, since the operation panel portion is usually housed in the door for the independent operation wall, if the door is closed, there is a possibility that an outside person may contact the operation panel surface. No risk of erroneous operation. Further, there is no possibility that the operation room is tampered with by an unmanaged person.

According to the fifth aspect of the present invention, in addition to the operation of the other aspects of the present invention, a circulating pump and its pipe are provided. Propagation of fermentation bacteria in the tank becomes uniform. Further, since the secondary side of the circulation pump is switched between the culture tank and the discharge pipe by the switching valve, the liquid after the culture can be discharged to the treatment tank through the discharge pipe using the circulation pump.

[0015]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment shown in FIGS. 1 and 2 is an embodiment including all the claimed inventions. A is the pre-fermentation apparatus of the present case, 10 is its casing, and is box-shaped,
For example, the height is about 2 m, the width is 80 cm, and the depth is 60 cm. These dimensions are not limiting. Case 1
The inside of 0 is partitioned by a partition panel 13 into a first chamber 11 and a second chamber 12, and further divided into a three-stage upper, middle, lower section as a whole by a support frame 14. The first chamber 11 and the second chamber 12 are partitioned by the partition panel 13 so that air does not flow between each other. Preferably, the partition panel 13 is formed of a heat insulating material. Of course, the first chamber 11 or all of the first chamber 11 and the second chamber 12 may be lined with a heat insulating material. The first room 1
1 is formed by a part of the lower stage, the majority of the middle stage, and the entire upper stage in the casing 10. The second chamber 12 is formed by a large part of the lower stage and a part of the middle stage. First
A culture tank 20 is provided in the middle stage of the chamber 11, and in this example, the capacity was 30 liters. This is a vertical cylindrical shape, and a heating device 22 is attached to an outer peripheral surface 21 thereof. A vertical hollow rotary shaft 23 is provided at the center axis position of the culture tank 20, and is connected to a motor 24 provided on the culture tank 20 via a suitable speed reducer (not shown). is there.

At least two sets of upper and lower arm rods 25 are provided at a position in the culture tank 20 as a part of the hollow rotary shaft 23 and two sets of upper and lower arms are provided. Each of the arm rods 25 has a vertically long stirring plate 26 fixed thereto. When the stirring plate 26 is made of a material having high rigidity, its outer edge 26a is provided very close to (5 mm or less) the inner peripheral surface of the cylindrical portion of the culture tank 20, and the stirring plate 26 is made of a material having a slight flexibility. In this case, the outer edge 26a is in contact with the inner peripheral surface of the cylindrical portion. Near the lower end of the hollow rotary shaft 23, an air blowing pipe 27 is discharged in the radial direction, and a large number of air blowing holes 28 are formed on the upper surface thereof.
3 is communicated with the hollow hole 23a.

A pump 30 for pumping the processing solution into the culture tank 20 is provided at the lower stage of the first chamber 11, and the tip of the suction pipe 31a on the primary side is provided below the casing 10. The secondary side pumping pipe 31 b is connected to the hose connection part 32, and is connected to the lid 33 of the culture tank 20. The suction pipe 31a and the pumping pipe 31
b constitutes a processing liquid supply pipe 31. The maximum pumping amount of the pump 30 was 0.5 liter / min. The pump 30 is a casing 10
It is preferable that the pump is provided inside the casing 10, but it may be provided outside the casing 10, or the pump used in the conventional purification treatment tank may be switched and connected to the embodiment of the invention according to claim 1. included. In the lower part of the casing 10, two more
One hose connection part 32b, 32c is provided, one of which is connected to the drain main pipe 35 in the casing 10.
The other one is connected to a processing liquid discharge pipe 36.

The culture tank 20 has a treatment liquid circulation pump 3
7 and the primary side thereof, a primary-side circulation pipe 38 connected to the bottom of the culture tank 20 is connected to the secondary side, and a secondary-side circulation pipe 39 is connected to the secondary side. It is connected to the lid 33 of the tank 20. The output of the processing liquid circulation pump 37 is 2 liters / minute to 2.5 liters / minute.
All you need is enough. The other end of the switching valve 40 is connected to one of the hose connection portions 32B via the processing liquid discharge pipe 36. Therefore, the switching valve 40 also has a function of controlling the liquid level.

The culture tank 20 is further connected with an overflow pipe 41 and a drain pipe 42, which are connected to the drain main pipe 35. An air pump 44 is provided at an upper position of the first chamber 11 in the housing 10, that is, above the lid 33, and a secondary side of the air pump 44 is connected to the hollow rotary shaft 23 via an appropriate joint. I have. In addition, although not shown, a liquid level gauge is provided, and when the liquid level falls below the allowable range, the switching valve 40 is set to the culture tank 30 side so that the culture liquid circulates more, and the allowable range is set. If it does, return it to its original state. These operations are also performed by the control device C. Further, a nutrient storage tank 45 is provided at an upper position of the first chamber 11. Usually, granules such as sodium glutamate and sorbitol are used as nutritional supplements. In the illustrated embodiment, a screw feeder is used as the nutrient supply device 46. The supply capacity was 0.2 g to 2 g / min.

In the lower part of the second chamber 12, a plurality of fermentation bacteria storage tanks 50a, 50b and 50c are provided.
The second door 51 is opened so that the fermentation bacteria solution can be supplied to each fermentation bacteria storage tank. The lids of the fermentation bacteria storage tanks 50a, 50b, and 50c are provided independently on the outer wall surface of the housing 10 of the second chamber 12, and the fermentation bacteria storage tanks 50a, 50b,
In some cases, it may be possible to put it into 50c.

The fermentation bacteria storage tanks 50a, 50b, 50c
Are connected to the lid 33 of the culture tank via the bacterial supply pumps 52a, 52b, 52c, and the bacterial supply pumps 52a, 52b, 52c.
The bacteria supplied by a, 52b, 52c can be put into the culture tank 20, and the bacteria supply pumps 52a, 52b, 52c
Bacteria corresponding to the output of c can be supplied continuously or intermittently. These bacteria supply pumps 52a, 52b and 52c
The revision of the discharge amount and the operation control are performed by the control device C. These bacteria supply pumps 52a, 52b, 52c are provided in the first chamber 11. These bacteria supply pumps 52
The maximum discharge rates of a, 52b, and 52c can be appropriately changed within a range of up to 30 cc / min.

The control device C is provided in the middle second chamber 12 of the casing 10. Usually, it is inserted from the outside of the casing 10 so as not to be exposed to corrosive and harmful gas in the first chamber 11. The operation panel 55 of the control device C is exposed on the outer wall surface of the casing 10, and starts and stops various motors, sets the discharge amounts of various pumps, and controls the heating device 22.
An input unit such as a knob or switch or a numeric keypad for setting the temperature of the liquid, controlling the liquid level, and switching various switching valves is provided. In the embodiment shown in the drawings, a separate and independent operation panel surface opening / closing door 56 is provided in the housing 10 only at a portion corresponding to the operation panel 55, and is opened only when the operation is performed. When the door 56 is closed at the time of use and at the time of non-use, there is no unintentional contact of the operator and no malfunction due to mischief.

In addition, a ventilation fan 60 is provided above the first chamber 11.
When deodorizing and deodorizing fermentation bacteria are not used, a deodorizer or a deodorizing device (not shown) filled with a deodorant such as activated carbon may be added to the primary or secondary side. is there. A second chamber, for example, a first chamber 11 and a second chamber 12
An air conditioner 58 is provided on the partition panel of
The room temperature is kept from rising too high. For example, the electronic air conditioner 58 uses the Peltier effect. First and second observation windows 15 and 29 made of transparent glass are provided in a part of the casing 10 and a part of the outer peripheral wall of the culture tank 20 opposed to each other. The inside state can be observed.

Operation and effect of the embodiment A case where a purified fermentative bacterium is cultured will be described. Operation panel 55
Is operated to pump the undiluted solution from, for example, the undiluted solution receiving tank 61 and operate the pump 30 to pump the undiluted solution into the culture tank 20. The sewage (stock solution) to be treated usually has a considerable odor, so the odor generation preventing bacteria are supplied to the three fermentation bacteria storage tanks 50c before or during the pumping of the stock solution,
The germ supply pump 51c corresponding to this is operated, and the odor generation preventing bacterium newly determined is thrown into the culture tank 20.

When the undiluted solution is filled in the culture tank 20, the pump 30 is first stopped, and the temperature optimal for cultivation of the odor preventing bacteria, usually the temperature in the culture tank 20 is 25 ° C to 3 ° C.
While being heated by the heating device 22 so as to be 0 ° C.,
The hollow rotary shaft 23 is rotated by the motor 24, and is stirred by the stirring plate 26 by the air pump 43 so that the undiluted solution in the aeration and stirring culture tank 20 and the odor generation preventing bacteria are sufficiently mixed. These operations are also performed by operating the operation panel 55.

When nutrients are required in the initial cultivation of the odor-preventing bacteria, the nutrient supply device 46 is operated to determine sodium glutamate, sorbitol, etc., which are stored in the nutrient storage tank 45 in advance. Inject quantity. These nutrients are generally freeze-dried and have a hygroscopic property, so that they are supplied to the nutrient storage tank 45 each time they are injected.

The processing circulation pump 37 is operated so that fermentation bacteria can be propagated more evenly in the culture tank 20, and a part of the treated water in the culture tank 20 is drawn out from near the bottom thereof.
7 through the switching valve 40 and from the upper part of the culture tank 20 to the culture tank 2 again.
0, and the culture solution is circulated. The flow rate at which the culture solution is returned to the purification tank is determined in advance, and the pump 3
Try to pump at 0. The liquid level in the culture tank 20 is detected by a liquid level meter (not shown), and the output valve selects the switching valve 40 to either circulation or discharge and sets the culture tank 2 within an allowable range.
The liquid level in 0 is maintained. In this case, the pump 30 operates continuously. Next, the fermentation bacterium liquid in the purification treatment tank is supplied to, for example, one fermentation germ storage tank 50a among the three fermentation germ storage tanks. The bacteria supply pump 51a corresponding to the fermentation bacteria storage tank 50a is operated according to a command from the operation panel 55 to supply the above-mentioned purified liquid fermentation bacteria to the culture tank 20. The supply amount and the flow rate of the above-mentioned purification fermentation bacteria are set in advance from the input unit of the control device C. If it is necessary to replenish nutrients, they are replenished. After introducing the purified fermentation bacteria during the operation of the circulation pump 37, the air pump 43, and the stirring plate 26, the pumping pump 30 is restarted for about 1 hour, and a part of the processing solution is circulated from the culture tank 20 by the circulation pump. The culture solution is sequentially returned to the treatment tank or an appropriate tank upstream from the treatment liquid discharge pipe 36 or the overflow 41 through the 37 and the switching valve 40.

Alternatively, the switching valve 40 provided on the secondary side circulation pipe of the processing liquid circulation pump 37 is switched to the discharge side, and the processing liquid is sequentially drained to the drain main pipe 35 or a separate processing liquid discharge pipe 36.
, The culture solution is sequentially returned to the treatment tank or an appropriate tank upstream of the treatment tank.

Although the first chamber 11 may be of a closed type in general, in a temperate area, the bottom panel and the top panel are made of insect screen panels so that the room temperature of the first chamber 11 does not rise excessively. In some cases. Moisture discharged from the culture tank 30 is released to the outside by a ventilation fan 57. As described above, when the bottom panel and the top panel are insect screen panels, the ventilation fan 57 is not necessarily required.

The air conditioner 58 and the controller are controlled so that the room temperature of the second chamber 12 is maintained within a temperature range in which the fermentative bacteria of various purification treatments start or freeze and their reproductive ability does not deteriorate or die. The room temperature controlled by the device C is preferably 5 ° C to 20 ° C. When the outside air is too low, such as in a cold region or in winter, the heat source for warming the second room is from the first room 11,
The air conditioner 5 receives only heat and does not ventilate.
As described above, reference numeral 8 denotes an electronic air conditioner utilizing the Peltier effect. In the apparatus of the present invention, since the preliminary culture is performed, the various fermentation bacteria multiply in the culture tank 20 approximately 100 to 1000 times.

When the fermentation of the purified fermentative bacteria in the anaerobic filter bed tank and the contact aeration tank in the sewage treatment plant reaches a normal fermentation state, the apparatus of the present invention may be temporarily stopped, and the apparatus may be used in winter or in winter. In cold regions, the liquid in these anaerobic filter bed tanks and contact aeration tanks does not rise to the optimum temperature for fermentation.If fermentation is not sufficient, the device is continuously operated, and these The supply of the liquid after the culture is continued. As a heat source for heating the liquid in the anaerobic filter bed tank and the contact water tank to an optimum temperature for fermentation, it is preferable to use waste heat of a waste incinerator or the like. When the device of the present invention is stopped for a long time, the control device and other devices other than the electrical devices are washed with water, and the washed water is collected in the drain main pipe 35 and discharged out of the casing 10.

FIG. 7 shows an example of a sewage purification facility using this apparatus. This apparatus is a flow chart showing the flow of sewage, which is a kind of one usually used as an agricultural settlement wastewater treatment facility. From the upstream side, receiving tank or aeration sand settling tank 6
0, a flow regulating tank 61 is provided. This flow control tank 61
The undiluted solution is further pumped up to the pre-culture device of the present invention, and the liquid after the culture is returned to the uppermost stream tank of the anaerobic filter bed tank 62, and the liquid passed through the anaerobic filter bed tank 62 flows into the aeration tank 63. . Further, solids are settled in the settling tank 64, and the supernatant is disinfected and discharged. The anaerobic filter bed tank 62 and the anaerobic filter bed tank 6
2 and the sediment generated in the sedimentation tank 64 are separated from the wastewater, the sediment is returned to the fertilizer, and the wastewater is returned to the sedimentation tank 64.

[0033]

According to the first and sixth aspects of the present invention, since the entire apparatus is caster and movable and can be fixed freely, the apparatus itself is moved to a place where the sludge waste treatment apparatus is required, and the liquid to be pumped is lifted. It is connected to a tank by a hose, and the processing liquid can be pumped into the culture tank by the pump in this apparatus. In particular, since various fermentation bacteria are precultured under optimum conditions in a culture tank having a relatively small capacity (relative to a normal treatment tank), the various fermentation bacteria actively grow from a suspended state or a growth stopped state. It grows to about 100 to 1000 times in a short time (1 to 2 hours).

Since this is returned to the treatment tank, it is practically compared with a method in which various fermentation bacteria are directly introduced into the treatment tank.
Reduce the amount of various fermentation bacteria to 1/100 to 1/100 of the conventional amount
An amount equal to 0 has the same effect as the conventional amount. In addition, using the same equipment, cultivation of anaerobic fermentation bacteria and aerobic fermentation bacteria,
It can be performed simply by selecting whether or not to supply air from the air pump to the hollow rotary shaft of the culture tank and the air blowing pipe.

Further, the above-mentioned culture tank is provided with a heating device, and the liquid in the culture tank can be adjusted to an optimum temperature for the culture, in combination with the rotation of the above-mentioned stirring plate. There is no possibility that the contaminants of the above will adhere to the inner surface of the outer peripheral wall of the culture tank.

According to the second aspect of the present invention, in addition to the above-described effects, the casing is divided into the first chamber and the second chamber as described above, and the constituent devices are disposed as described above.
Regardless of the heating of the culture tank in the first chamber, the various fermentation bacteria storage tanks in the second chamber are not heated to such an extent that these bacteria ferment, and the bacteria do not overheat. In addition, since various hoses such as a stock solution supply hose are provided on the outer surface of the casing so as to be connected to and disconnected from the connection port, it is easy to attach and detach these various hoses.

According to the third aspect of the present invention, since the control device and the air conditioner are provided in the second chamber, the control device is not exposed to high humidity or corrosive gas generated from the culture tank. Of course, the above-mentioned various storage tanks are also kept under optimal conditions. Further, since the operation panel of the control device is exposed to the outer wall surface of the casing, various operations, commands, settings, and the like can be performed on the outer wall surface of the casing.

According to the fourth aspect of the present invention, the operation panel is provided with a dedicated opening / closing door.
The operation panel surface is not exposed to the outside, and there is no possibility that each operation unit may malfunction due to unconscious contact of an operator or tampering by an outsider.

According to the fifth aspect of the present invention, the culturing tank is further provided with a circulating pump separate from the pumping pump and these pipelines, so that the liquid in the culturing tank is further stirred and the switching valve is provided. By operating the pump, the pre-cultured liquid can be discharged into the treatment tank independently of the pump while operating the pump. In the invention according to claim 6, the pump 30
Is provided in the casing 10, so that it is not necessary to use an external pump and the setup is easy.

[Brief description of the drawings]

FIG. 1 is a front view of the entire appearance.

FIG. 2 is a side view of the entire appearance.

FIG. 3 is a schematic vertical front view of a casing.

FIG. 4 is a schematic vertical sectional side view of a casing.

FIG. 5 is an overall piping system diagram.

FIG. 6 is a sectional view of a culture tank.

FIG. 7 is a flowchart of an example of a sewage treatment facility using the apparatus of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Casing 11 1st chamber 12 2nd chamber 13 Division panel 14 Support frame 15 1st observation window 20 Culture tank 21 Outer peripheral surface 22 Heating device 23 Hollow rotating shaft 23a Hollow hole 24 Motor 25 Arm rod 26 Stirring plate 26a Outer edge 27 Air blowing Pipe 28 Air outlet hole 29 Second observation window 30 Pumping pump 31 Treatment liquid supply pipe 31a Suction pipe 31b Pumping pipe 32a Hose connection part 32b Hose connection part 32c Hose connection part 33 Cover 35 Drain main pipe 36 Treatment liquid discharge pipe 37 Treatment liquid circulation pump 38 Primary side circulation pipe 39 Secondary side circulation pipe 40 Automatic liquid level control valve 41 Overflow pipe 42 Drain pipe 43 Air pump 45 Nutrient storage tank 46 Nutrient supply device 50a, 50b, 50c Fermenting bacteria Storage tank 51a 51b, 51c bacteria feed pipe 52a, 52b, 52c bacteria feed pump 55 operation panel 56 door 57 Ventilator 58 air conditioner

 ────────────────────────────────────────────────── ─── Continued on the front page (72) Inventor Isamu Isoh 2-3, Shioda, Higashida-cho, Iwaki-shi, Fukushima (72) Inventor Toru Hirayama 15 Kanoda, Shimo-yoshima, Iwaki-shi, Fukushima F-term (reference) 4B029 AA02 BB02 BB06 CC01 DB01 DB11 DB19 DD06

Claims (6)

[Claims] 1. A feeder and a discharge pipe for treating liquid in a culture tank, a storage tank for several fermentation bacteria, and a supply of several bacteria for supplying a fermentation bacteria solution to the culture tank in a casing with casters. A pump and a bacterium supply pipe, a nutrient storage tank and a supply device for supplying nutrients to the culture tank, and a pump for pumping the treatment liquid into the culture tank is provided in or near the casing; It is cylindrical and has a hollow rotary shaft perpendicular to the center thereof, and a stir plate long in the axial direction of the culture tank is fixed to the tip of an arm rod protruding in the radial direction on the hollow rotary shaft, The outer edge of the agitating plate is extremely close to or lightly in contact with the inner peripheral surface of the culture tank at substantially the entire height, and the outer end of the hollow rotary shaft is connected to an air supply source provided in the casing. And a part of the hollow rotary shaft in the culture tank. An air blowing pipe is provided near the bottom so as to protrude in the radial direction. The air blowing pipe communicates with a hollow hole of the hollow rotary shaft, and a heating device is provided on an outer peripheral surface of the culture tank. Preliminary fermentation apparatus for sewage treatment fermentation bacteria. 2. The casing is of a substantially hermetic type, and is internally divided into a first chamber and a second chamber. The first chamber is provided with the culture tank and a heating device. The room is provided with several fermentation bacteria storage tanks and an air conditioner, the first and second chambers are shut off from the air flow, and the outer wall of the second chamber has fermentation bacteria communicating with the fermentation bacteria storage tank. A supply port or a door that can be opened and closed when the fermentation bacteria are supplied is provided, and a connection port for a stock solution supply hose, a treated water discharge hose, and a drain discharge hose is provided on a part of the outer wall of the first chamber. The preliminary fermentation apparatus for sewage treatment fermentation bacteria according to claim 1, wherein: 3. A control device and an air conditioner are provided in a part of the second chamber, and an operation panel surface of the control device is exposed to an outer surface of the casing, and a processing liquid pump and a circulation pump are provided in the control device. Start and stop, temperature control device of culture tank by heating device, start and stop of several bacteria supply pump, start and stop of air supply source,
3. The preliminary fermentation apparatus for sewage treatment fermenters according to claim 2, further comprising an input section for starting and stopping the ventilation device. 4. An operation panel surface of the control device is housed in a casing instead of being exposed on an outer surface of the casing.
The preliminary fermentation apparatus for sewage-treated fermentation bacteria according to claim 3, wherein an independent operation wall opening / closing door is provided only in a portion corresponding to the operation wall surface. 5. A circulating pump is connected to the culturing tank via a circulating pipe, and a secondary side of the circulating pump is connected to the culturing tank.
5. The pre-fermentation apparatus for sewage-treated fermentative bacteria according to claim 1, wherein the apparatus is connected to a drain main pipe or a discharge pipe via a switching valve. 6. The pump according to claim 1, wherein said pump is provided in a first chamber in said casing.
A preliminary fermentation apparatus for a sewage treatment fermenter according to 2, 3, 4 or 5.