JPH0757350B2 - Organic waste / wastewater treatment equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a device for treating organic waste such as manure and kitchen waste, or wastewater, and more particularly, to a device for treating such organic waste or wastewater. TECHNICAL FIELD The present invention relates to a treatment apparatus that can recover methane gas by performing a methane fermentation treatment, and the treated fermentation liquid can be effectively utilized as a fast-acting organic liquid fertilizer.

[Prior art] Methane fermentation aims at so-called energy saving for recovering methane, and at the same time, it is taken up as one of the technologies for removing volatile organic substances in waste, that is, waste treatment technology, and the waste liquid generated after fermentation is also used as fertilizer. Has been advertised for its usefulness.

However, the reality is that it is only used for experiments and research in public institutions such as agricultural laboratories, or to reduce the concentration of organic matter in sludge discharged at sewage treatment plants, and very few people in the private sector. Is being carried out. The reason is that even in rural areas, there is a sufficient distance from the next house to the extent that the odor does not reach, and there is a sunny and spacious space, and cow dung and straw are abundantly available. If the supply can be easily obtained by mutual assistance, it is possible to operate a methane gas fermenter that can withstand practical use with relatively inexpensive materials such as cement, vinyl sheets and wood, but it is also very limited. It's stopped just because people are doing it. The rural environment is changing rapidly, and it is unlikely that the current methods will be promoted. On the other hand, private methane fermentation equipment that is operated outside of rural areas has various problems in terms of its purpose and technology to be adopted, but in general, compared to other energy saving methods, the energy balance is significantly negative, In addition, the cost is relatively high, and only the evaluation that could be branded as the least efficient is obtained from any point, such as the cost required for processing the fermentation liquid after methane fermentation.

Of course, it seems that research on methane is still underway in various fields, but in proportion to the progress in the technology for improving the efficiency of gas recovery in methane gas fermentation, mechanical devices and other instruments Even if the initial recovery cost and operating cost increase due to more complex refinement of the class and increase in the use of prime movers, and the gas recovery rate is slightly improved, the CO
%, Depending on the case, because it contains a small amount of hydrogen sulfide, etc.
Even though there are various merits, it has been considered that practical application is extremely difficult under this severe reality.

Also, due to the recent development of biotechnology, some noticeable research announcements such as improvements in bacterial cells are scattered, but the results of the experimental stage in the laboratory are practical stages that can withstand the actual large amount of waste disposal. It seems that the road to practical use will be very difficult unless it is a low-cost device or equipment because the methane gas that can be recovered is a low-value added methane gas.

In addition, there are various problems in treating the fermentation liquid after recovering methane gas. That is, the fermentation liquid after the conventional methane fermentation is separated into digestive liquid and digested sludge, and the digested liquid is denitrified and dephosphorized as a raw material diluent, or the digested sludge is dehydrated and used as compost. The law is mentioned,
Both are costly, in terms of sales, and in terms of storage, it is the current situation that they have many problems, but there is nothing but to say that fermented liquid is returned to the field as liquid fertilizer, but as a practical problem, There are many problems with the odor when applied to fields, the timing of planting, the amount of application, the method of fertilization and the storage during that period. Not done.

Therefore, an object of the present invention is to provide a realistic processing apparatus capable of solving all of the problems described above, and more specifically, to improve the energy balance and initial cost of the methane gas generator. The two-phase multi-stage fermenter, which has been considered to have the best gas recovery efficiency in the past, has been simplified to the limit as far as the structure can be thought of at the same time, and at the same time automatic gas lift stirring. By developing, we aimed to improve the energy balance and reduce the initial cost.

In addition, the entire device is designed to be suitable for all purposes, such as recovery of methane gas, treatment of various organic wastes / wastewater, utilization of fermentation liquid as organic liquid fertilizer, etc. It is an intention.

[Means for Solving Problems] In order to achieve the above object, the present invention is configured as the following processing device.

That is, first of all, as a schematic configuration, a raw material tank buried underground for storing organic waste such as manure and kitchen waste or wastewater; wastewater / wastewater pumped up from this raw material tank quantitatively on a regular basis. And a diluting tank for receiving the final fermented liquor treated in the methane fermenter and the dilution water of the fermented liquor to form an organic liquid fertilizer.

More specifically, in the methane fermentation tank, the bottom surface is inclined, one end is in contact with the tank wall, the other end is slightly separated from one end in contact with the tank wall and the tank wall of the adjacent partition wall, and the lower part is the tank bottom. The interior is divided by a plurality of bulkheads installed in contact with
A plurality of substantially independent fermentation chambers that are horizontally meandering to each other are constructed, with the upper part of the slope as the receiving side of waste / waste water from the raw material tank and the lower part of the slope as the sending side to the dilution tank. The fermented liquid is sent to the dilution tank in an amount substantially corresponding to the amount of waste material and waste water received from the raw material tank.

It also employs automatic gas lift agitation that uses generated methane gas. That is, the upper part of the methane fermenter and the valve Q
The gas tank for storing the generated methane gas is connected to the upper part of the methane fermenter via the valve R, and the valve Q is closed and the valve R is open. A gas storage chamber for storing a predetermined amount of methane gas having a predetermined pressure as a stirring gas in the fermentation tank by the gas pressure is provided, and the gas storage chamber and the bottom of the methane fermentation tank are connected via a valve P, and the gas storage chamber A detection means for detecting a predetermined gas pressure to open the valves Q and P and outputting a control signal to close the valve R is provided.
By the valve control, the methane gas in the gas storage chamber is automatically jetted from the bottom of the methane fermentation tank, and the automatic gas lift agitation in the tank is performed according to the amount of methane gas generated.

[Operation] With the above-mentioned configuration, organic waste such as manure and kitchen waste or wastewater is successively stored in the raw material tank buried underground, and at the same time, it is quantitatively stored in the methane fermentation tank on a regular basis. It will be pumped up and methane fermentation processing will be performed. By the way, as described above, this methane fermenter comprises a plurality of fermentation chambers in which the bottom surface is inclined and the inside is divided by partition walls to form a plurality of continuous fermentation chambers, and the inclined upper portion is the receiving side from the raw material tank. Therefore, when a predetermined amount of organic waste or wastewater is added, it is already staying in each fermentation chamber in the tank, and the fermentation process is proceeding toward the lower part of the slope, more specifically, it is staying. The raw material during fermentation, the raw material that has been considerably fermented, or the raw material that has been completely fermented, is sent to the fermentation chamber of the next and subsequent stages by an equal amount corresponding to the above input amount, and the final fermentation tag In addition, an equal amount of the completely fermented raw material in the vicinity of the delivery side to the dilution tank is pushed up to the dilution tank. That is, the conventional multi-stage action is achieved by a single fermenter, and the device is extremely simplified and highly adaptable to reality. Further, by providing a gas storage chamber for storing the methane gas generated in the fermentor, by providing a detection means for detecting a predetermined pressure to control the opening and closing of the valve,
The gas pressure generated in the fermentor was used to automatically eject methane gas from the bottom of the fermentor to automatically stir the gas in the tank. Compared with agitation by using a pump or the like, it becomes possible to save the cost of the prime mover and other machinery and power. In addition, the gas lift method using the generated methane gas is performed slowly when the activity of the methane bacteria is not active, and when activated, it appears as an operation method in which the frequency is increased and stirring is performed. There is no possibility of doing so, and a stirring action suitable for natural providence can be obtained.

Therefore, the organic waste / wastewater treatment device according to the present invention can improve the energy balance of the methane gas generator, reduce the initial cost, and improve versatility, and can solve all the problems up to this point. It provides a specific and effective processing device.

Embodiments Embodiments shown in the accompanying drawings will be described below. FIG. 1 is an overall outline view showing an example of an organic waste / wastewater treatment apparatus according to the present invention, and 1 is buried underground for storing organic waste / wastewater such as manure and kitchen waste. In the prepared raw material tank, a excrement transport pipe 2 from a flush toilet and a transport pipe 3 for kitchen waste crushed by a disposer or a crusher (grinding machine) are connected. In the case of the pumping type, it may be directly stored without passing through the transportation pipe 2, and in the case of the flushing type, it is not allowed to flow into the sewer pipe but is allowed to flow directly into the raw material tank 1.
Except for all wastewater with relatively low organic matter concentration, such as rainwater, bath water, water after washing, rinsing water for tableware, it is desirable to let in all wastewater / wastewater with relatively high organic matter concentration. The daily inflow to the raw material tank 1 is the methane gas generation tank,
That is, when the planned amount of wastewater / waste treatment in the methane fermentation tank is exceeded, a spare tank 4 is provided as shown in the figure,
You should let it flow in here. Reference numeral 5 is a methane fermenter, and the raw material wastewater / dirt in the raw material tank 1 is pumped up by a pump 6 while being controlled by a liquid level sensor at a fixed time (1-2 times) every day at a fixed time. .

The methane fermentation tank 5 is made of an FRP reinforced with an iron plate, a stainless steel plate, or a steel material and designed to withstand a pressure of at least about 3 atm. As shown, the bottom surface 5a is inclined and the upper surface is hermetically sealed. The lid 5b is covered to make it hermetically sealed. As shown in FIG. 2, the inside of the methane fermentation tank 5 is divided by four partition walls 7 to form a plurality of continuous fermentation chambers a, b, c, d, and e. That is, as shown in the drawing, each partition wall 7 has one end in contact with the tank wall and the other end slightly apart from one end in contact with the tank wall and the tank wall of the adjacent partition wall. The fermentation chamber is formed continuously. The partition walls 7 are all in close contact with the bottom surface of the tank, and the top surface is 2
Gas is allowed to pass with a space of ~ 3 mm. Two partition walls 7 are firmly fixed to each other with bolts and nuts. Of course, it may be fixed by welding.

The raw material pumped up from the raw material tank 1 is sent to the upper side of the slope of the methane fermentation tank 5, ie, the fermentation chamber (i), through the piping, the electric ball valve S and the heat resistant pipe P1. The opening depth of the pipe P1 is about the middle, and the pipe P1 is opened toward the tank wall.

In the final fermentation chamber e located at the lower part of the slope, the open end of the heat resistant pipe P2 is located 5 to 6 cm above the bottom of the deepest part, and is led to the dilution tank 8 via the electric ball valve T and piping. .

FIG. 3 shows the state of reflux of the raw materials in the methane fermentation tank 5. The raw material staying in the fermentation chamber (i) due to the previous press-fitting is in the process of transitioning from the solubilization process to the fermentation process or has already entered the fermentation process.The raw material newly press-fitted from pipe P1 this time is the raw material for the previous time. It is extruded from the gap between the adjacent partition wall 7 and the next fermentation chamber. The raw material of the fermentation process which was in the fermentation chamber (b) passes through the gap between the adjacent partition wall 7 and flows into the fermentation chamber (ha) of the next stage, and almost the same amount of raw material which has passed the fermentation process is passed from the fermentation chamber (h) to the next stage. It flows into the fermentation room. The raw material in the fermentation chamber 2 has completed the fermentation process to the extent that it is complete or close to it, and an amount equivalent to the inflow amount passes through the gap between the adjacent partition wall 7 and is delivered to the final fermentation chamber E. Therefore, an approximately equal amount of the fermented liquid at the final stage after the completion of the fermentation process is pushed up from the opening end of the pipe P2 and sent to the dilution tank 8.

That is, the raw material of the solubilization process (phase I) in the raw material tank 1 and the preliminary tank 4 is sequentially passed through each partition wall 7 by the interaction between the inclination of the bottom surface of the methane fermentation tank 5 and the automatic stirring operation described later. After the methane fermentation process (Phase II) that almost completely completes the fermentation process of the raw material, the fermentation process is completed, and the two-phase and multi-stage fermentation process is performed. The amount fed into the diluting tank 8 is almost the same as the amount of the raw material that has been pumped into the methane fermentation tank 5 from the raw material tank 1 through the pipe P1 by the single pump 6. According to such a system, a single methane fermenter 5 can exert functions comparable to those of the two-phase multi-stage type, and it can be said that the limit of downsizing can be achieved.

In this way, a fixed amount of raw material is injected into the methane fermentation tank 5 every day, and a fermentation liquid of approximately the same amount as that is automatically flowed into the dilution tank 8. The size of the dilution tank 8 is 10 to 15 times larger than that of the inflowing fermented liquid, and as soon as the inflow of the fermented liquid is completed, the groundwater is supplied from the well 9 on the left of the dilution tank 8 to 10 to 15 times the inflowed fermented liquid. The sequence is controlled so that it will flow in as diluted water.

As shown in FIG. 1, a spraying pump 10 is installed in the diluting tank 8, and when a predetermined amount of diluting water flows in to dilute the fermentation liquid, the pump 10 is operated to operate the electric valve group 11 It is a system that can be delivered to three directions via the plant and can be applied to the vegetation of a size that can be adapted as a fast-acting organic liquid fertilizer at regular time intervals.

Increase the capacity of the dilution tank 8 further,
It is also possible to increase the capacity of the methane fermenter 5 and disperse and disperse it in various directions. In this case, it is also possible to construct a mass treatment system in which a plurality of feeding nipples are provided in the circumferential direction of the diluting tank 8 and are connected to a spray passage controlled by a cylinder valve using a compressor.

Whichever spraying system is used, the dispersed terminals in each direction are redistributed into several 1-inch pipes so as to be spread over a wider area. From the high place to the low place, the energy of the position is used, and on the flat ground, a vinyl pipe with a diameter of 10 cm is cut in half, or a gutter is installed in a prone position to connect the end of the 1-inch pipe. The location shall be the one most suitable for vegetation.

This system employs an automatic stirring system that uses generated methane gas for stirring in the methane fermenter 5. In FIG. 1, reference numeral 10 is an automatic stirrer that forms the center of the automatic stirrer system, and is installed by burying about half of it in the ground. At first glance, it has a structure similar to that of a gas holder (water-sealed low-pressure floating roof type), and has an outer cylinder 10a and a floating roof-type inner cylinder 10b fitted in the outer cylinder 10a. The inner cylinder 10b is configured as a thick-walled iron cylinder, and a sufficient weight is applied to calculate the balance between the gas pressure to fill the gas storage chamber 10c and the floating height, and a pressure slightly lower than 0.3 atm (main In the example, it is designed to float at 0.28 bar. When the floating roof type inner cylinder 10b floats, a detection pestle 10d provided on the top of the floating roof inner cylinder 10b is provided so as to come into contact with the contact 10e, thereby operating a sequence control system described later. The gas accumulated in the gas storage chamber 10c is guided to the bottom of the methane fermentation tank 5 through the pipe P3 when the valve P is open, and is ejected from the trifurcated pipe 11 (see FIG. 2) into the tank to automatically lift the gas. Stir it (about 2 minutes). The gas that has been used for stirring and has spouted upward is stored in the gas tank 12 through the pipe P4, the strainer V, and the valve Q. The pressure limit of the gas tank 12 is set to about 0.19 atm.

It should be noted that if only water is poured into the automatic stirrer 10, there is a risk of freezing in winter, so it is advisable to mix antifreeze liquid in consideration of the minimum temperature in severe winter. In this embodiment, the outer cylinder 10
The upper part of a is expanded in two stages, but its size is determined by taking into account the annual rainfall and the amount of water that evaporates.

As shown in the figure, if the water level adjusting pipe 13 connected to the upper part of the outer cylinder 10a is adjusted for the seasonal adjustment of the water level, almost no-touch operation is possible throughout the year.

The sequence control system for opening and closing the valves P, Q and R is as shown in the following table.

In the above table, stage I is a stirring preparation stage, in which the methane gas generated in the methane fermenter 5 passes through the pipe P4, the strainer V, the valve R, and partly through the pipe P5 to the gas reservoir of the automatic stirrer 10. Sent to chamber 10c, part of which is pipe P7
It is connected to the stirring head of the pressure management device described later through. Stage II is a stirring stage in which a predetermined pressure is detected by the detection means composed of the detection pestle 10d and the contact 10e, and the valve is operated by the generated signal. It is in the stage of being ejected. The timer is set for 2 minutes. Since the valve Q is also open, the gas after stirring is sent to the gas tank 12 through the pipe P4 and the strainer V. Phase II
“I” indicates a restored state after the time is up for 2 minutes. Another pipe P6 extending from the methane fermentation tank 5
Is connected through a strainer U to a protective head of a pressure management device described later.

Here, the pressure management device 14 will be described. This pressure control device 14 is a device similar to that described in detail in Japanese Patent Application No. 62-69367 filed by the same inventor, and four transparent U-shaped tubes 15 and 16 are suspended in a suspension of 4 m above the ground. , 17, 18 are attached and related parts are attached.

The main pillar 19 in the center is graduated so that the center of the main pillar with a height of 4 m is zero, the upper part is in black and the measured pressure is double, and the lower part is in red and the measured pressure is also double. ing. Water or antifreeze solution stored in the storage containers 20 and 21 is injected into each U-shaped pipe so that the left and right water heads are at the same level at the zero position of the scale. Antifreeze is good considering freezing in winter, and ethylene glycol, which is easy to obtain commercially,
The density is 1.115 to 1.150. For controlling the amount of methane gas generated and measuring the pressure in a methane fermenter, a system of about 1/100 atm is sufficient. Therefore, a little water is mixed in the antifreeze liquid and the density is considered to be 1 as in the case of water, and the scale is graduated in units of meters and no difference occurs.

Pipe P6 connected to methane fermentor 5 is strainer U
Via the extension bent end of the U-shaped pipe 15 on the left side of the suspension main column 19. When the gas pressure inside the methane fermentation tank 5 increases due to gas generation in the methane fermentation tank 5, the water head on the left side of the U-shaped pipe 15 is pushed down in the minus direction (red scale) below zero, and the water head on the right side of the same scale from zero. Push upward in the positive direction (black mark). The limit of the gas pressure of the methane fermentation tank 5 is set to 0.3 atm, and the system operates within that range. When the gas pressure in the methane fermenter rises for some reason and exceeds 0.3 atm and reaches 0.38 atm, the liquid in the pipe is automatically stored in the storage container 20 installed at the upper right end of the main column.
The gas is released into the atmosphere. That is, the head of the U-shaped pipe 15 is in charge of the safety head. After identifying the cause of the accident and completing the repair, the storage container
If the cock 20a of 20 is opened and the liquid is returned to the inside of the pipe, it easily returns to the old state.

The U-shaped tube 16 on the right side of the main pillar 19 is in charge of the stirring head,
With valve R open, pipe P4, strainer V
When the gas pressure is stored in the gas storage chamber 10c of the automatic stirrer 10 through the path passing through the part of the U-shaped pipe 16 through a pipe P7.
Leading to. The upper end of the U-shaped pipe 16 is open to the storage container 20 to ensure safety when the pressure rises. When returning the liquid into the pipe, the cock 20b may be opened.

The U-shaped pipe 17 at the left end of the suspension is in charge of the measuring head of the gas tank pressure, and is a pipe that leads to the gas tank 12 via the valve Q.
Branch connection to part of P8. The upper end is opened to the storage container 21 at a graduation of 190 cm, and a photoelectric tube 22 for detecting the water head is installed. Therefore, as the gas generated from the methane fermenter gradually fills the gas tank 12, the head of the right side rises, and when it reaches plus 190 cm (0.19 atm),
Sequence control is performed so as to shift the inflowing gas to a spare tank (not shown) as detected by the photoelectric tube 22. In addition,
When the pressure exceeds 0.19 atm, the internal liquid flows into the storage container 21 and the gas is released into the atmosphere, so that safety is ensured. The U-tube 18 at the right end of the suspension is for the spare tank,
It can be added as needed. By opening the cocks 21a and 21b, the liquid in the storage container 21 can be returned to the U-shaped tubes 17 and 18.

Reference numerals 23 and 24 are drain cocks, which are configured in pairs and are configured to easily discharge only the water contained in the methane gas, that is, the methane gas generated from the methane fermentation tank contains a large amount of water. The drain cock is installed at an appropriate place to drain water, and is connected in the middle of the branch pipe. In the case of such a drain configuration, the water in the methane gas collects on the upper drain cock, so at the time of discharge, the upper drain cock is first opened and the water is dropped and closed. Next, the lower drain cock may be opened, discharged and then closed, and the gas is not released and only the water is completely discharged. Instead of the manual drain cock, an electric valve may be provided, and the liquid level on the upper electric valve may be detected by a photoelectric tube or a sensor of a nickel-plated steel plate, and it is possible to collectively and automatically discharge several places at the same time.

Here, the automatic stirring system will be described again in detail in association with the pressure management device 14 and the gas tank 12.

FIG. 1 is an illustration of Stage I of Table 1. Therefore, the electric valve P is closed, Q is closed, and only R is open. Stage I is a stage of stirring preparation for accumulating a stirring gas of 0.28 gauge pressure in the automatic stirrer 10.

The methane gas generated in the stirring tank 5 rises in the P4 and P6 pipes at the same gas pressure, and the methane gas rising in P6 passes through the strainer U toward the U-shaped tube 15 of the pressure control device 14, and the pressure of the methane gas in the fermentation tank 5 is increased. Is displayed with high accuracy. pipe
Since no valve or the like other than the strainer is attached to P6, the U-shaped pipe 15 of the pressure control device 14 controls both the safety device of the fermentation tank 5 and the measurement of the gas pressure in the tank.

The methane gas in the pipe P4 passes through the strainer V, the electric valve R, the pipe P5 and the thick steel inner cylinder 10b of the automatic stirrer 10 at the same gas pressure as P6. This inner cylinder is considerably heavy, and in order to press-fit and float the methane gas therein, it is necessary to increase the volume of the upper gas storage chamber 10c and raise its pressure to 0.28 gauge pressure. The methane gas passing through the electric valve R through the pipe P4 is divided into two parts, one goes to the inner cylinder 10b through the above-mentioned pipe P5, and the other enters the U-shaped pipe 16 through the pipe P7. Inner cylinder 10b
The pressure in the upper gas reservoir 10c is measured. At this time, methane gas has begun to be injected into the gas storage chamber 10c, and its volume and gas pressure are gradually increasing. The heads of the aforementioned U-tube 15 and this U-tube 16 rise and fall at exactly the same level.
If there is a difference in height between the two heads, it may be due to dust accumulated in one of the strainers, twisting of the pipe, etc. Is displayed.

FIG. 6 (A) shows the state before the methane gas is injected into the gas storage chamber 10c of the inner cylinder 10b from the methane fermentation tank 5, but the mixed water of water and the antifreezing liquid causes the inside of 10b to reach the gas storage chamber 10c. It is full of water. Methane gas vigorously generated from the fermenter 5 is pressed into the inner cylinder 10b through P4 → R → P5, and methane gas starts to pass through the upper gas storage chamber 10c. As the amount of injected gas increases, the volume of methane gas in the gas storage chamber 10c increases, and the gas pressure also increases, so that the inner cylinder 10
Since the water in b is pushed downward, the water volume rises so that the water rises in the gap with the outer cylinder 10a and deeply sinks the inner cylinder 10b.

The gas volume in the gas storage chamber 10c further increased, and the pressure thereof also continued to rise, and when it approached 0.28 Geshi pressure, the inner cylinder 10b began to levitate, but the moment the buoyancy reached 0.28 gauge pressure, the buoyancy rapidly increased. To surface. When floating, the T-shaped detection rod 10d mounted on the top of the inner cylinder 10b comes into contact with the contact 10e mounted on the top of the automatic stirrer 10. This completes Stage I and moves to Stage II for the stirring gas.

FIG. 6 (B) shows a state in which the gas pressure in the gas storage chamber 10c approaches 0.28 Gesi pressure and the inner cylinder 10b is on the verge of floating, and FIG. 6 (C) shows the state at the moment of completion of stage I, That is, the inner cylinder
It shows the moment when 10b floats and the detection rod 10d contacts the contact 10e.

Next, the head and gas pressure of the U-shaped tube related to the gas tank in stage I will be described. I mentioned that the pressure limit of the gas tank 12 is set to about 0.19 gauge pressure, which means that
The methane gas generated in the fermentation tank 5 is first used by the automatic stirrer 10 for stirring in the fermentation tank 5 and then sent to the gas tank 12, and if the gas pressure in the gas tank 12 becomes 0.19 gauge pressure, the gas that flows into the preliminary tank is introduced. Shifts, so
It means that the pressure does not exceed 0.19 gauze pressure. However,
The total amount of gas generated in the methane fermenter 5 is not stirred by the automatic stirrer 10, but a small amount of methane gas present in the upper gas reservoir of the methane fermenter 5 is allowed to stir in the stirring preparation stage I. Instead, it is sent directly to the gas tank.

The gas pressure of methane gas in the gas tank 12 is 0.19 gauge pressure at the maximum, that is, the head difference of the U-shaped tube is 1 m90 cm, but since methane gas is used as fuel at any time, it is usually considerably lower than 0.19 Geshi pressure. In this example, it is assumed that the pressure is 0.09 gauge, that is, the head difference of the U-shaped tube is 90 cm. Since the gas tank 12 is connected to the U-shaped pipe 17 of the pressure control device 14 by the pipe P8, the horizontal head difference of the U-shaped pipe 17 accurately indicates 90 cm. In step I, the gas for automatic stirring is supplied to the gas storage chamber 10c of the automatic stirrer 10.
Since the electric valve Q is closed because it is the stage of stockpiling inside, and the gas generated from the methane fermentation tank 5 does not flow into the gas tank, in stage I, a U-shaped tube for displaying the gas pressure in the gas tank. The head difference of 17 is fixed at 90 cm and does not rise or fall.

Summarizing the above, in stage I, the electric valves P and Q are closed and R is open, so the methane gas actively generated from the methane fermentation tank 5 is not sent to the gas tank 12,
Therefore, the U-shaped pipe 17 of the pressure control device 14 indicates a head difference of 90 cm because the pressure is 0.09 gauge pressure from the beginning to the completion of the phase I. However, if the methane gas in the gas tank 12 is used, the pressure will drop and the head difference will decrease. On the other hand, since the electric valve R is open and P is closed, the vigorous methane gas generated in the methane fermentation tank 5 is automatically stirred through the valve R.
The methane gas is press-fitted into the inner cylinder 10b of 10 and accumulated in the gas storage chamber 10c above the inner cylinder 10b. The pressure and volume gradually increase, and when the pressure reaches 0.28 gauge pressure, the inner cylinder 10b
And the detection rod 10d comes into contact with the contact 10e, and the stage I is completed and the stage II is started.

Step II is a step of performing stirring in the methane fermenter 5. As shown in Table 1, electric valves P and Q are opened,
R is closed and opening and closing is the reverse of stage I. Since R is closed and Q is opened, 0.28 gauge methane gas compressed into two hemispheres at the top of the methane fermentation tank 5 flows into the gas tank 12 through the pipe P4-strainer V-motorized valve Q-pipe P8. . At the same time, the 0.28 gauge methane gas confined in the gas storage chamber 10c of the inner cylinder 10b of the automatic stirrer 10 is closed by the electric valve R and the electric valve P, and passes through the pipe P3-electric valve P to ferment methane. Tank 5
It is jetted from a trifurcated pipe 11 provided at the bottom of the tank to stir the gas lift in the tank.

Regarding how much 0.28 Gesi pressure methane gas compressed in the gas storage chamber 10c of the inner cylinder 10d is used for stirring and sent to the gas tank 12, first, the methane fermenter 5
There is a problem with the water pressure (specific gravity may be assumed to be 1.0) and the gas pressure in the gas tank 12 only at the water depth at the center of the. An automatic stirrer with a water depth of 1 m at the center of the methane fermentation tank 5 shown.
The height of 10 is about 2m35cm. Also, the height of the gas storage chamber 10c filled with 0.28 gauge methane gas is almost 1 m.
There is. Therefore, the height of water is about 2m30cm, that is, 0.
Since the gas in the gas storage chamber 10c is pushed up by 23 gauge pressure,
The water depth of the raw material organic material of the methane fermenter does not affect, but the gas pressure of the gas tank pressure does. If the gas tank 12
When the gas pressure of is increased to the maximum limit of 0.19 gauge pressure, a considerable amount of stirring gas close to 0.19 gauge pressure remains in the gas storage chamber 10c, so few gases can be involved in stirring, but the next stirring preparation step As soon as the pressure reaches 0.28 gauge, even if the amount of gas used for stirring is small, strong stirring is performed and the number of stirring increases. The stirring activity is completed in about 1 minute. Electric valve Q is open, so methane fermentation tank 5 and gas tank
The gas pressure of 12 becomes equal. The head heights of U-tubes 15 and 17 are equal and the U-tube 16 is slightly higher or settles somewhere between the head differences of up to 190 cm. Give another minute to enter Stage III after a total of 2 minutes.

The stage III returns to the stage I again and the electric valves P and Q are closed,
R opens. Therefore, the methane fermentation tank 5 and the gas tank 12 are shut off, and the gas storage chamber 10c of the automatic stirrer 10 and the methane fermentation tank 5 are connected. The head of the U-shaped pipe 17 indicating the pressure of the gas tank is unchanged, but the head of the U-shaped pipe 15 rises, and conversely, the head of the U-shaped pipe 16 descends to the same level, and the stirring described in Stage I is started. The preparation process begins.

Therefore, although a machine for compressing methane gas is not equipped, by using the vigorous generated gas in the tank to form a gas storage chamber 10c in the inner cylinder 10b of the automatic stirrer 10 and increasing the pressure of methane gas. , It is possible to smoothly carry out the stirring activity using electronics.

FIG. 4 shows another example of the gas lift stirring system using the generated methane gas.

In this example, the compression vessel 10 'is used as the gas storage chamber, and the stirring head of the pressure control device 14 (head of the U-shaped pipe 16) is used as the detection means to open / close the valves P', Q ', R'. I'm trying to control. The principle is no different from the water-sealed automatic stirrer 19. Therefore, Table 2 of the sequence control for opening and closing the valves P ', Q', R'is the same as Table 1.

In stage I, the electric valves P'and Q'are closed and only R'is opened, so the vigorous methane gas generated from the methane fermenter 5 raises P'4 and P'6 at the same gas pressure, and P'6. Methane gas rising up through the strainer U'and pressure control device 14
It faces the U-shaped tube 15 and serves as a safety device for measuring the pressure of the fermentation tank 5. The methane gas in the pipe P'4 reaches the T-shaped passage through the strainer V'at the same gas pressure as P'6, and enters the compression container 10 'through the electric valve R'. P '
Since it is closed, it is not press-fitted into the methane fermentation tank 5, and because Q'is also closed, it does not flow into the gas tank 12. The vigorous methane gas fermenting from the raw material organic substances injected up to the upper limit of the methane fermentation tank 5 rises from the two hemispherical shapes on the lid of the tank to which the pipes P'4 and P'6 are attached and rises to U. It flows into the character tube 15 and the compression container 10 'at the same pressure. Therefore, the water heads of the U-tube 15 and the U-tube 16 rise at the same level, which is similar to the water-sealing type. The head difference between the U-shaped tubes 15 and 16 is increased in proportion to the amount of methane gas generated from the methane fermenter. The U-shaped tube 16 is provided with a hard glass tube 25 at a water head difference of 2 m80 cm, and the liquid level of the water head can be detected by a nickel-plated copper plate 26 inserted in the tube from the tip of the pipe or a photoelectric tube instead of it. is there. At the moment when the water head difference reaches 2m80cm and the nickel-plated copper plate 26 senses the liquid level, the control becomes stage II, P ′ and Q ′ are opened, R ′ is closed, so the methane fermentation tank 5 and the gas tank 12 are The pressure is instantaneously reduced to 0.09 Geshi pressure through Q '. At the same time, through P ', the compression container 10'
The methane gas having a pressure of 0.28 gauge, which was trapped inside, was ejected from the three-way pipe 11 for stirring at the bottom to perform stirring, and was fed into the gas tank 12 through Q '.

The transition from stage II to stage III is performed by setting a timer for 2 minutes, as in the case of Table 1 above.
In the same manner as in step I, the electric valve is opened and closed to enter the stirring preparation step.

In either the automatic stirring system shown in FIG. 1 or the automatic stirring system shown in FIG. 4, it is possible to measure the gas pressure in the gas reservoir 10c or the compression container 10 'by the stirring head of the U-shaped pipe 16, Moreover, it is a principle that it always operates at the same level as the safety head of the U-shaped pipe 15. Therefore, if there is a difference between the operating states of the two, it means that a failure or some other failure has occurred and a precise check function can be expected.

Between the pressure control device 14 and the U-shaped tube 15 in charge of its protective head and the methane fermentation tank 5, there is no drain cock provided other than the strainer except the strainer, and a valve or cock is provided in the gas path. Since it is not provided, the structure is extremely safe. Also, if a transparent vinyl pipe is used for the U-shaped tube and a plastic container is used for the storage container,
There is no fear of rust or corrosion, which is beneficial for ensuring safety.
That is, at the same time as the generation of methane gas, dust of organic matter especially containing a large amount of moisture is ejected, and hydrogen sulfide is included depending on the raw material. By adopting the above-mentioned structure, it is possible to eliminate defects that are likely to cause problems in safety and system of the class.

Also, while increasing the pressure resistance of the methane fermenter, and enclosing mercury in a sandwich state in the liquid in the U-shaped tube that is in charge of the safety head of the pressure control device, switching to the high pressure measurement mechanism,
It is possible to automatically push the fermentation liquid to a height of 10 to 30 m. In that case, although depending on the conditions of the diluted water intake, by effectively utilizing the energy of the position, it is possible to significantly reduce the facility cost required for the dispersion and dispersion of the diluted fermentation liquor over a wide range. In the case of spraying over such a wide range, it is possible to reduce costs by unifying the valve of the methane fermenter into a cylinder valve system using a compressor.

Methane fermentation is a treatment of human manure and livestock / poultry manure,
In addition, there are large fluctuations in the supply of raw materials such as raw garbage treatment and treatment of excess waste of raw fruits, and in a single methane fermentation tank, the treatment amount often exceeds temporarily. For such excess supply of raw material, a spare tank 4 shown in FIG. 1 is installed to store the excess, and a liquid level sensor is installed in the spare tank so as to process the decrease in the raw material production amount one after another. This can be dealt with, but an increase in the amount of raw material generated over a considerable period of time can be easily dealt with by installing a preliminary methane fermentation tank, adding it to the above-mentioned suspension, and arranging U-tubes in parallel.

If the methane fermentation tank and the automatic gas lift agitation system are operated in combination with the above pressure control device, the safety is sufficiently secured, and if sequence control or computer control instead of this is performed, unmanned automatic operation with high accuracy is achieved. It can be controlled, and labor costs can be reduced.

The fermentation process using the methane fermenter is designed to operate at medium temperature fermentation at around 40 ° C, but of course, it is possible to switch to the high temperature fermentation method. A road heater can be easily used to heat and keep the fermentation tank warm. That is, the bottom of the fermentation tank is heated by a load heater between 38 ° C and 43 ° C, and is held down with an asbestos board, then the entire tank is first covered with glass fiber, and the top is covered with styrene foam etc. to keep it warm. By increasing the effect of, it is possible to considerably reduce the initial cost for heating and heat retention. In order to maintain the temperature in the methane fermentation tank, a thermostat insertion hole 27 for installing a thermostat for the load heater and a thermostat for checking the temperature rise in the event of a load heater failure should be provided on the side of the fermentation tank. It is desirable to keep it (see FIG. 3).

In medium-temperature fermentation, it is necessary to keep the temperature at about 40 ° C, so it is effective to use the hot water of the solar water heater for heat exchange, and at the same time, store the generated gas to prepare for heating at night in winter. However, the problem is how to make the initial cost required for them economical. It is theoretically possible to make the energy balance positive if effective facilities are available. However, since the commercially available solar water heater is for the purpose of making hot water, it is uneconomical to use it only for heating the methane gas fermenter, and if the hot water is used too much, it will be used for heating the fermenter. It causes a lack of defects. By the way, for heating only with the road heater, if the heat insulation is appropriate, the power consumption is 8 to 10 kW per fermenter cultivated rice even in winter.
/ It only takes about a day. In addition, the automatic gas lift agitation action by the generated methane gas, compressors, other machines,
Compared with stirring with a pump, etc., it has the effect of saving the cost of the prime mover and other machinery and power, and also provides a stirring action suitable for natural providence. That is, it is generally known that, with respect to stirring in a methane fermenter, excessive stirring leads to damage of cells, destruction of formed blocks, and increase in consumption power, resulting in a negative effect. Stirring in Gas Fermenter "Theory and practice of methane gas utilization" (Ryoji Ono,
Bungaido Shoten), page 185 states that once every 3 to 5 days (however, one tank method) is appropriate. Also, on page 147 of "Biomass Energy" (edited by Shingo Yamazawa, Asakura Shoten),
A comparison list of 30 to 300 minutes per day (however, two-phase system multi-stage type) is posted, but probably it is understood as stirring when methane bacteria are actively active in the fermenter.

In methane fermentation, the ecology of methane bacteria is the same as the physiology of humans and animals, as long as it is a living organism, and is never fixed and invariable. It constantly fluctuates depending on the quantity and quality of the food that the human digestive system provides, it appears in the bowel movements, the normal state does not last long, and always some, in some cases considerable,
It's just as variable and not like a well-equipped machine. In conventional mechanical agitation, the physiological state of the bacterium cannot be distinguished from the outside of the fermentation layer, and agitation of a set intensity is applied at a set time, which may damage the microbial cells in some cases, or However, excessive stirring may kill the activation of the bacteria themselves. In this respect, the automatic stirring system is suitable for natural providence. That is,
When the intermediate product of Phase I that had been in the solubilization process was newly injected into the fermentation layer from the raw material tank, the previous portion was sequentially fed into the fermentation chamber of the next stage, and the original complete fermentation chamber in the final fermentation chamber was flowed. After fermentation, almost the same amount of liquid is pushed out of the tank. Meanwhile, the activity state of the methane bacteria in each fermentation chamber accurately reflects the gas generation amount, which is directly reflected in the gas compression / storage process of the automatic stirring system, and the stirring frequency is automatically adjusted. That is, when the activity of the methane bacteria is not active, it is slow, and when it is activated, the frequency is increased and stirring is performed, and the activation of the methane bacteria is further promoted to increase the gas generation. I'm confirming.

In particular, it is difficult for an inexperienced person to start up by newly seeding and adding raw materials to generate methane gas, but using this automatic stirring system makes it possible to start up relatively easily. This is also confirmed experimentally.

Further, conventionally, it has been said that the methane fermentation cannot be performed only with the sewage discharged from the flush toilet, and this has been made possible for the first time with this device. On page 166 of Energy for The home, published by Garden Way Publshing in the US, solid and liquid ratios of 1 to 10 are required for methane gas generation, but in the case of flush toilets, the ratio is about 1 As opposed to 500, to obtain methane gas, we have to use other methods to collect sewage efficiently in a flush toilet vscu
Describes um systems. On the other hand, with this device, it was possible to generate methane gas only from the waste water of the flush toilet. Of course, since the organic matter concentration of the sewage in the flush toilet is extremely low, the gas generation amount is naturally small accordingly. However, as will be described later, in this case, the generated gas amount is not a problem. The issue is whether the fermented liquid discharged is suitable as liquid fertilizer, and as far as the generation of methane gas is concerned,
It can be said that the correct fermentation liquor has been discharged.

It is unclear whether to see the generation of methane gas only with the sewage discharged from the flush toilet, whether it is due to the efficiency of the fermentation tank, the automatic stirring system, or the synergistic effect of both, but the fermentation from the raw material tank It is conceivable that the bacteria had been acclimatized and acclimatized in the tank for at least 1 to 2 months, and that there was power in them. This is because the amount of kitchen waste in the raw material is gradually reduced during experimentation and operation, and it is reduced to zero after 1-2 months, and only manure from the flush toilet is used as the raw material for methane fermentation, which is suitable as a liquid fertilizer. This is the product obtained from the fermented liquid.

Regarding the installation of the methane fermenter, it is common sense that it is expected that there will be restrictions or restrictions in place. However, the installation of this device is welcomed,
It is a device that will not be shot. That is, since the present apparatus can be used not only for flush toilets but also for excretion type manure, a vacuum car is not required. At the time of injecting the raw materials, there is no odor problem even if it is a washing type or a drawing type. At the same time, all of the raw garbage whose treatment is currently a problem can be treated, and it is a positively welcomed device because it can collect gas and can obtain even more excellent fast-acting organic fertilizer. Has become.

Also, the generated methane gas itself has a slight odor, but if you do not want to use the gas, you can feel no odor if you release it from the top of the suspension into the atmosphere, and the above-mentioned pressure control device. When used in combination with 14, there is no problem in terms of safety. When methane gas is used as fuel, almost no odor is felt and the calories are higher than city gas. However, the methane gas generated from the fermenter contains a large amount of water, but there is no problem if the simple drain as described above is provided.

Further, when using a methane gas combustion instrument such as a gas stove, if a frame trap 28 as shown in FIG. 5 is attached immediately before the combustion instrument, it can be used while observing the gas flow rate. The flame trap is prepared for flashback, and in this system, there is no possibility of occurrence due to the mechanism,
As a precaution, it prevents the risk that the pressure in the fermentor will drop below atmospheric pressure and cause a flashback in the gas fermentor system.
The structure of the frame trap is as shown in the drawing, and water or lime water is put into the hard glass ball 28a, gas is led from the pipe 28b, and taken out from the pipe 28c. Water or lime water is supplied by closing the cock 28d and opening the cock 28e.

By the way, when the fermentation liquid is used as liquid fertilizer, odor becomes a problem. Whether the raw material to be put into the methane fermenter is manure, poultry manure, kitchen waste, or anaerobic treatment, the shape and odor of the fermented liquid to be discharged do not undergo such treatment, and aerobically treated human livestock.・ "Theory and practice of methane gas use", which is completely different from the shape and spoilage of poultry manure and kitchen waste.
As said on page 95, "of which, the color of the liquid is
It becomes blackish brown or black, and has no stool odor and tar odor. " Even if you throw in kitchen garbage and other organic substances, the fermentation liquid is the same as the above expression, regardless of the raw materials used. It is a well known fact that the composition of the fertilizer component of the fermented liquid contains a large number of organic fertilizer components other than nitrogen, phosphoric acid and potassium in a well-balanced manner and is an excellent organic fertilizer. However, the peculiar odor becomes a problem even if the fermentation liquid is used as it is or separated into digestive liquid and digested sludge and sprayed on the field. Even if the fermentation broth is processed instead of direct spraying, the peculiar odor of tar odor is emitted at that stage, and a large amount of equipment and cost are required for the processing, and a large amount of spraying is done in urban areas and in the vicinity of houses. There is a great possibility that problems will occur in the processing of fermented liquor.

However, in this system, the fermentation broth was diluted 10 to 15 times with the nearest groundwater in a completely sealed state,
It is an automatic and unmanned operation that regularly sprays a fixed amount every day. With regard to the fermentation broth, even if the concentration of input materials is relatively high and the concentration is relatively high, the odor can be completely eliminated by diluting it about 15 times.

In recent years, the use and utilization of organic fertilizers have been sought after in order to prevent soil degradation, but the application of organic fertilizers requires a large amount of labor and is currently unavoidably expensive. Composting in organic farming is the most labor-intensive and labor-intensive. In Japan, the application of manure to the field gradually disappeared, and it is hardly seen at present, but since it was the application of manure collected in the fertilizer, it was abolished not only because of odor but also because of parasite problems and hygiene. It has been said that it is a natural consequence. However, as described above, even if the manure is fermented with methane and subjected to anaerobic treatment, it is completely different from the above-mentioned manure in the fertilizer as an organic fertilizer. Recently, it has been pointed out that the manure of livestock and poultry, which has been conventionally heavily used as an organic fertilizer, is affected by an antibiotic contained in a blended sample ingested, and has a problem as an organic fertilizer. However, as far as human excrement is concerned, such concerns are irrelevant at present. Regarding fermented liquor by anaerobic treatment such as methane fermentation, page 21 of the above "Theory and practice of methane gas utilization" is "extremely excellent as a fertilizer, and harmful bacteria and parasites in manure are also killed. Therefore, it is suitable for clean cultivation of fruits and fruit trees. ” In addition, on page 159 of "Biomass Energy",
"When the fermentation broth is alkaline due to anaerobic fermentation and the antibacterial activity of methane bacteria causes pathogenic bacteria in digestive sludge, some of the seeds of roundworm eggs and weeds to die or the activity to decrease significantly. It is said (Shigehisa Iwai 1977) ”.

Regarding manure of livestock and poultry, if anaerobic treatment of methane fermentation is performed, how the influence of the antibiotics contained in the above-mentioned mixed feed will change is a subject of future research, but in any case, It is safer than direct fertilization of manure.

By the way, as for organic fertilizers in general, it is slow-acting. Water fertilizer is one of the most popular methods for making simple fast-acting fertilizer from organic fertilizer. It is a method of adding 30 to 40 times the weight of dried oil cake, spoiling it well, and diluting the supernatant further 10 to 15 times and spraying.
Even if it is diluted to that extent, it emits a uniquely strong odor, and even if it is about a flower pot, it can not be spread over a wide area. Even if water fertilizer is diluted so much, it still gives off a bad smell.
For aerobic treatment, if the same amount of lees is put into the raw material tank of this system and anaerobic treatment is performed, the fermentation liquor has a tar odor of 10 to 10 as described above.
If diluted 15 times, it is almost odorless and can be spread over a wide range.

The need for conversion to organic fertilizers is being emphasized to prevent soil degradation. In addition, it has been reported that the results of experiments in which the application of organic fertilizer rather than the inorganic fertilizer require less spraying of chemical liquid for controlling pests. However, the commonly used organic fertilizers are slow-acting ones, and we do not know any published examples of concrete large-scale experimental results regarding the effects of fast-acting organic fertilizers on vegetation.

[Experimental example] The results of investigating the effect of diluted methane fermented liquid as a fast-acting organic fertilizer on vegetation and groundwater on the site of 180 tsubo in Higashi-Osaka city are as follows. It was

(Planting) In addition to the mochi trees in the hedges, there are 100 species of evergreen and fallen leaves.
The garden trees and other trees of the book are mixed. Among them, the fruit trees are apples, loquats, peaches, plums, apricots, non-fruits, grapes, pomegranates,
Chestnuts, walnuts, ginkgo, Japanese laurel, mountain peach, popo, akebi, plum, persimmon, tree strawberry, jujube, kiwi, citrus, etc. 21
Includes a total of 35 species.

<Comparative example> (Fertilization) For the first 3 years, as an organic fertilizer, 10 bales containing 30 kg of oil meal, chicken manure
12 bales containing 10 kg, bone meal 30 kg, fish meal 20 kg etc.
The fertilizer was applied according to the textbook as a fertilizer. No inorganic fertilizer is used.

(Insecticide) The application of insecticides for controlling pests did not fall below 12 to 15 times three times a year in most months except winter. In winter, lime-sulfur liquid was sprayed twice and machine oil was sprayed twice.

As a result of the above-mentioned maintenance, the tree was found to be more vigorous than other trees in the vicinity, but the labor and cost required for it were considerable.

<This example> (Fertilization) From the spring of the following year, all fertilization was switched to 10 to 15 times diluted methane fermentation solution. In the winter of the same year (first year) and the following year (second year), the lime-sulfur solution was sprayed once each, but it was stopped after the third year. From the first year onwards, the spraying of pesticides during the spring-autumn season has no problem even if the number of times is reduced year by year. In other words, the damage of pathogens has gradually decreased. After 4 years, spray 1000 times diluted solution such as Sumithion and Dipterex (both are trade names) 1-2 times to exterminate peaches, plums, plums and other oilworms in the spring. If insects occur, this too is 2-3
The application of pesticides is limited to once a year.

It can be said that the spraying of the diluted solution of the methane fermentation liquor, which is a fast-acting organic fertilizer, far strengthens the resistance to pests more than the slow-acting organic fertilizer described above.

(Growth) Regarding the growth of trees, 67 strains on the east side, 15.6 m, 90 strains on the west side, 1
A one-year experiment was conducted on a hedge of a 7.5m-wide mochi tree vegetation. The distance between east and west is 37m.

The sunshine conditions are the same on the east side and the west side, but the land on the east side is somewhat low and moist, and the west side can be said to be normal.

Topdressing of oil cake was conducted once a winter on the east side, and pipes were sprinkled on the west side, and a diluted solution of the methane fermentation solution was sprayed almost once a day. As a result, the west's vigor and growth far surpassed those of the east. In particular, regarding the sprouts in spring, the mochi trees on the west side were much more active than on the east side.

None of the trees on the premises are considered to have died as a result of the dilution of the fermentation broth not being suitable as a fertilizer, and the methane fermentation broth grows far more than ordinary slow-acting organic fertilizers. I have to admit that it is excellent. In particular, evergreen broad-leaved trees such as Kusunoki and oak show extremely strong growth potential. The reason is that even if the slow-acting organic fertilizer gradually decomposes in the ground and becomes soluble, the soil water surrounding the root hair is not always abundant, and the difference in osmotic pressure is so large. Absence of root hairs is relatively slow, and the ability to absorb fertilizer vigorously may be due to the occasional increase in soil water and diminished osmotic pressure when diluted by rainfall. In comparison, the dilution water of methane fermentation broth was measured at a fixed time every day, and the fertilizer component was abundant and the molecular weight was high (low osmotic pressure), and it was sufficiently diluted to further increase the difference in osmotic pressure. Since it is given as soil water, it is thought that it can make a marked difference in the growth of trees compared to slow-acting organic fertilizers. The same applies to the cultivation of vegetables and vegetables, and some varieties show remarkable growth potential, but I will omit them specifically.

For the purpose of treating the fermentation broth after methane fermentation, it is necessary to increase the spray amount per unit area. It is more effective and economical to sprinkle a viable tree to form a dense artificial tree in a short period of time, rather than simply throwing it into the field or cultivating vegetables. This system is also a practical system that can implement it. The movement to protect forests from deforestation and loss has become more and more popular in recent years, but if there is no further active movement to foster forests, the current development activities will inevitably lead to natural forests. We are convinced that the effectiveness of this system is one of the measures that should be promoted in the future, as there is a high possibility that other trees will be reduced.

Furthermore, the relation with water is described.

It is a well-known fact that Japan belongs to the region with the highest rainfall on earth and is suitable for growing trees. Diluted water is required for groundwater because it requires a large amount, so relying on water is not only costly, it causes problems during the dry season. Ground subsidence would not logically occur with this method even if pumped from the confined aquifer, but it will be awaited by expert research and water intake will be conducted from the unconfined aquifer. Where there is groundwater even if the amount of water in the unconfined aquifer is small, it takes time if the pump is controlled, but it is necessary to dilute it by dividing it into several times and pumping. The amount of water can be secured. Start with a methane fermenter of a scale that can discharge 10 to 15 times less fermented liquid than the amount of groundwater that can be secured for the time being. If there is no place restriction, it is economical from the aspect of the drainage pipe to spread the area gradually from the periphery of the fermenter, and as a result, the growth of trees is remarkable as mentioned above. The tree surely holds rainwater at its roots, gradually increasing the water retention capacity and increasing groundwater. It makes it possible to spread the dilution water over a wider area, and forms a dense forest of huge trees over a wider area. It is arguable that this recharges the water source. We are convinced that it can be the starting point for restoring the normal water circulation of the open stationary system of the earth.

[Effects of the Invention] As described in detail above, the present invention is an apparatus for methane-fermenting organic wastes / wastewater such as manure and kitchen waste,
It was possible to provide not only mere treatment but also a total treatment system that can recover methane gas and can be used as an extremely effective organic fertilizer by diluting the fermentation broth. With one fermenter, the same efficiency as a multi-stage fermentor can be achieved, and the methane gas generated in the fermenter is stored in the gas reservoir only by its gas pressure, and if a predetermined gas pressure is reached. By automatically controlling the valve, the bottom of the fermentation tank was jetted into the fermentation tank only by gas pressure, and the automatic gas lift agitation in the tank was performed.Therefore, external pressure such as a compressor is unnecessary, improving the energy balance and initials. Cost reduction has also been achieved, and since the stirring in the fermentation tank is performed by the gas pressure of the generated methane gas, It has the advantage that since the stirring action in proportion to the growth activating Tan bacteria is achieved stirring expedient law of nature is performed. In addition, since the fermentation broth completely treated in this way is diluted and used as an organic liquid fertilizer,
There was no problem of odor when used as a fertilizer, and it was possible to provide the optimum apparatus for treating organic waste and wastewater.

Therefore, it is suitable for immediate use, for example, as a processing device in a golf course clubhouse or a hotel in a hot spring along a valley, etc. It is possible to create an ideal environment surrounded by dense forests that isolate odors, if the provision or provision of the above can be obtained.

Furthermore, in Japan, 90% of the total land area is mountainous, and the rise in land prices related to housing, forest conservation issues, environmental conservation issues, etc. are complicated in this area, and voices calling for a crisis are becoming more and more intense. There is. Under such circumstances, the system of the present invention, which is capable of directly connecting the treatment of manure and garbage and the cultivation of forests, shows a highly desirable direction as a fundamental solution to these problems.

[Brief description of drawings]

FIG. 1 is an overall schematic view showing an embodiment of the apparatus for treating organic waste / waste water according to the present invention, FIG. 2 is a plan view of a methane fermentation tank, and FIG. 3 is a methane fermentation tank. FIG. 4 is a front view showing another example of the automatic stirring system in the methane fermentation tank, and FIG. 5 is a view just before the fuel equipment when the generated methane gas is used as a fuel. FIGS. 6 (A), (B) and (C) are sectional views showing the operating state of the automatic stirrer, which is an explanatory view of the frame trap which is recommended to be attached. 1 ... Raw material tank, 5 ... Methane fermenter, 7 ... Partition wall,
8 ... Dilution tank I, B, C, D, F ... Fermentation chamber, P, P '... Valve 10c ... Gas reservoir chamber, 10' ... Pressure container (gas reservoir chamber) 10d ... Detection (detection Means) 10e …… Contact (detection means) 26 …… Nickel-plated copper plate (detection means)

Claims (1)

[Claims] 1. A raw material tank buried underground for storing organic waste such as manure and kitchen waste or wastewater; receiving wastewater / wastewater pumped up from this raw material tank quantitatively on a regular basis; A methane fermentation tank for performing methane fermentation treatment; and a final fermentation liquor processed in this methane fermentation tank and a dilution tank for receiving the dilution water of this fermentation liquor to form an organic liquid fertilizer. The methane fermentation tank has a bottom surface. In addition to being inclined, one end is in contact with the tank wall, the other end is slightly separated from one end in contact with the tank wall and the tank wall of the adjacent partition wall, and the lower part is formed by a plurality of partition walls installed in contact with the tank bottom surface. Divide and configure a plurality of almost independent fermentation chambers that are horizontally meandering to each other, with the upper part of the slant serving as the receiving side of waste / waste water from the raw material tank and the lower part of the slant serving as the sending side to the dilution tank. Sending wastewater Was carried out, the amount of fermentation broth to substantially correspond to the dirty waste-fouling accept fraction of the waste water from the raw material tank and sent to configure the dilution tank, also be connected via a methane fermentation tank top and the valve Q,
The gas tank for storing the generated methane gas is connected to the upper part of the methane fermentation tank through the valve R, and the valve Q is closed.
With the valve R in the open state, a gas storage chamber is provided for storing a predetermined amount of methane gas having a predetermined pressure as a stirring gas in the methane fermentation tank by the gas pressure generated by gas generation in the methane fermentation tank. The fermenter bottom is connected to the bottom of the fermenter via a valve P, and a detection means for detecting a predetermined gas pressure in the gas storage chamber to open the valves Q and P and to output a control signal to close the valve R is provided, By controlling the valve, methane gas in the gas storage chamber is automatically ejected from the bottom of the methane fermentation tank, and automatic gas lift agitation in the tank is performed according to the amount of methane gas generated. Organic waste / wastewater treatment apparatus.