JP3607252B2 - Sewage treatment method and apparatus - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to a technical field related to a sewage treatment method and a sewage treatment apparatus for treating manure excreted by livestock and the like.
[0002]
[Prior art]
Conventionally, as a sewage treatment apparatus, there exists a septic tank used at home etc. as described in Unexamined-Japanese-Patent No. 2001-121175, for example. Such a septic tank is composed of a pretreatment tank that separates and filters solids such as feces and removes them, a biological filtration tank, a treated water tank, a disinfection tank, and the like, and the purified water in the final step is the septic tank. Is more discharged. Among these, the pretreatment tank includes an anaerobic filter bed tank first chamber and an anaerobic filter bed tank second chamber, which separates and removes solids such as feces.
[0003]
Moreover, as another sewage treatment apparatus, there exists a septic tank which manufactures and processes fertilizer by decomposing livestock manure etc. as described in Unexamined-Japanese-Patent No. 10-224137. The septic tank includes a first decomposition tank having a diffuser tube in which water containing aerobic bacteria is put into the septic tank to generate fine bubbles, a second decomposition tank to which coarse bubbles are supplied, an aging concentration tank, The manure is a device that progresses while sequentially overflowing each tank, finally becomes liquid fertilizer, and the dehydrated component becomes fine compost.
[0004]
Another sewage treatment apparatus is described in JP-A-6-92765. This is to improve the mixing efficiency of compost material and manure by injecting manure into the compost material being stirred while stirring the compost material put into the fermenter with a stirrer, and treat manure by composting. is there. As a stirring device, a system in which a chain and a sprocket are driven by a motor, and a compost material is scraped up and dropped backward by blades attached to the chain is shown.
[0005]
Further, as another sewage treatment apparatus, as shown in FIG. 6, a system comprising a separator 91, a septic tank 92, a dehydrator 93, and a compost maker 94. That is, sewage (raw water) 90 is put into a separator 91 such as a centrifugal type to separate solid matter 91a and moisture 91b, and the separated sewage 91b is the next septic tank 92 (as disclosed in JP 2001-121175 A). It is thrown into. The solid matter 92a separated in the septic tank 92 is further dehydrated by a dehydrator 93, and the solid matter 93a having a small amount of water is put into a composting machine 94 (as shown in Japanese Patent Laid-Open No. 6-92765) and composted. Will be processed. Here, the solid material 91a separated by the separator 91 is directly put into the composting machine 94 and processed. Further, the water 93b removed by the dehydrator 93 is returned to the septic tank 92. The purified water 92b purified in the septic tank 92 is discharged into a river or the like.
[0006]
[Problems to be solved by the invention]
In the sewage treatment apparatus as described in JP-A-2001-121175, two anaerobic filter bed tanks are required in order to separate solids from sewage in the pretreatment tank, and this separation step becomes a major factor. It costs money. In addition, the treatment of sludge accumulated in the pretreatment tank is also expensive, and as the scale of livestock to be reared increases, a large-scale or a large number of devices are required. There is a problem that it is difficult to adopt.
[0007]
Moreover, in the sewage treatment apparatus described in Japanese Patent Application Laid-Open No. 10-224137, the treatment capacity is limited because of the configuration in which the fertilizer is formed by decomposition with bacteria in the purified water tank. Therefore, when the scale of livestock to be raised becomes large, the treatment cannot catch up, and a larger or a large number of devices are required, and there is a problem that such a large-scale sewage treatment device is difficult to adopt in terms of cost.
[0008]
Further, in the sewage treatment apparatus described in JP-A-6-92765, when the amount of urine to be injected, especially when there is a large amount of water, corrosion due to sewage of relatively small parts such as a chain of a stirring apparatus is remarkable, and durability Sex is lost. Therefore, there is a problem that a large amount of manure, particularly manure containing a lot of water cannot be processed.
[0009]
Further, the sewage treatment apparatus shown in FIG. 6 requires four types of machines, that is, a separator 91, a septic tank 92, a dehydrator 93, and a composting machine 94. When a large amount of sewage is treated, the sewage treatment plant In such a large-scale sewage treatment apparatus, there is a problem that it is difficult to adopt in terms of cost.
[0010]
The present invention has been made in view of such problems, and provides a sewage treatment method capable of treating a large amount of manure by a simple method and capable of producing compost by this treatment. Let it be an issue.
[0011]
It is another object of the present invention to provide a sewage treatment apparatus capable of treating a large amount of manure with a simple apparatus and capable of producing compost by this treatment.
[0012]
[Means for Solving the Problems]
In order to solve the above-described problems, the sewage treatment method according to the present invention employs the following means.
[0013]
That is, according to claim 1, sewage containing solid matter from livestock or the like is sprayed on the moisture adjusting material deposited in the treatment tank, and the moisture adjusting material and the sewage are stirred by the stirring means, and the sewage collected in the lower part of the treatment tank Is a sewage treatment method for collecting and spraying in a treatment tank, wherein the treatment tank is agitated while spraying sewage, and a ripening area for stirring and drying without sewage ripening fermentation. The agitation means is equipped with a transfer function that can transfer a mixture of moisture adjusting material and sewage, and fertilizes the mixture by stirring it from the spraying area side to the aging area side at a predetermined speed and fermenting it. It is characterized by doing .
[0014]
In this means, sewage containing solids is sprinkled on the moisture adjusting material in the treatment tank and stirred and processed, and sewage not mixed with the moisture adjusting material is recovered and again sprayed on the moisture adjusting material and processed. . Thereby, all the sewage is processed inside a processing tank, without isolate | separating a solid substance and a water | moisture content.
In addition, the sewage is mixed with the moisture adjusting material, transferred, and composted, and a new moisture adjusting material is introduced to allow the sewage to be sprayed.
Further, the mixture in which the sewage is sufficiently sprayed in the spraying area is transferred to the maturing area, and the maturing proceeds.
[0015]
Further, according to claim 2 , in the sewage treatment method according to claim 1 , the stirring means includes one or a plurality of screws, and the stirring is performed by rotating the screw and moving the inside of the treatment tank. To do.
[0016]
In this means, the screw provided above the processing tank is rotated, and the screw is moved in the processing tank to stir and transfer the mixture.
[0017]
Furthermore, in order to solve the above-described problems, the sewage treatment apparatus according to the present invention employs the following means.
[0018]
That is, in claim 3 , a treatment tank for depositing moisture adjusting material, a spraying device for spraying sewage containing solid matter from livestock, etc., a stirring means for stirring the moisture adjusting material and sewage, and a lower part of the treatment tank A recovery means for recovering the accumulated water and a supply means for supplying the recovered sewage to the spraying device again. The treatment tank is stirred while spraying the sewage, and is stirred and dried without spraying the sewage. The agitation means is provided with a transfer function capable of transferring the mixture of the moisture adjusting material and the sewage from the spraying area side to the aging area side at a predetermined speed while stirring .
[0019]
In this means, the sewage containing solid matter is sprayed on the moisture adjusting material by the spraying device and stirred and processed by the stirring means, and the sewage not mixed with the moisture adjusting material is collected by the collecting means and sprayed again on the moisture adjusting material. To be processed. Thereby, all the waste water is processed inside a processing tank, without using the apparatus which isolate | separates a solid substance and a water | moisture content.
Further, the sewage is treated in the spraying area, and the transferred mixture is aged in the aging area.
[0020]
According to a fourth aspect of the present invention, in the sewage treatment apparatus according to the third aspect , the stirring means includes one or a plurality of screws and is suspended above the treatment tank so as to be movable.
[0021]
In this means, the screw provided above the treatment tank is rotated and the screw is moved to stir and transfer the mixture.
[0022]
Further, according to claim 5 , in the sewage treatment apparatus according to claim 3 or 4 , the recovery means includes a plurality of sewage channels provided on the bottom surface of the treatment tank and a recovery tank for collecting sewage in the plurality of sewage channels. It is characterized by that.
[0023]
In this means, the sewage collected on the bottom surface of the treatment tank flows into the sewage channel, and is guided from the sewage channel to the recovery tank and collected.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, embodiments of a sewage treatment method and apparatus according to the present invention will be described with reference to the drawings.
[0025]
1 to 4 show an embodiment (1) of a sewage treatment method and apparatus according to the present invention.
[0026]
The sewage treatment apparatus 100 according to this embodiment includes a treatment tank 2 in which a moisture adjusting material 1 is deposited, a spraying device 3 that sprays sewage H (feces and urine) containing solid matter H1 from livestock and the like, and a moisture adjusting material 1. And agitation means 4 for agitating and mixing the sewage H, a recovery means 5 for recovering the sewage H collected in the lower part of the treatment tank 2, and a supply means 6 for supplying the recovered sewage H to the spraying device 3. ing.
[0027]
The treatment tank 2 is provided for treating the sewage H and producing the compost C, and is formed of concrete or the like and has a height of about 1 m to 2 m and a length of several m to several tens m or more. It is comprised by the side walls 21 and 22 and the bottom face 23 of both sides, and the both ends of the longitudinal direction are the inlet 24 of the moisture adjusting material 1, and the outlet 25 of the compost C manufactured.
[0028]
Rails (not shown) that allow the stirring means 4 to move are provided on the upper surface portions 21 a and 22 a of the side walls 21 and 22 of the processing tank 2. A sewage tank 7 is formed along the side wall 22 of the treatment tank 2. The sewage tank 7 is filled with sewage H (feces and urine) containing solid matter H1 discharged from livestock and the like from the outside. Normally, the composition of sewage H from livestock such as cows and pigs is 80 to 90% of water composed of urine, and the remaining 10 to 20% is solid matter H1 composed of feces.
[0029]
The moisture adjusting material 1 is made of bark (bark of wood), rice husk, sawdust, etc., and is a raw material that adsorbs manure and fermentes the mixture M into compost C.
[0030]
In the treatment tank 2, as shown in FIG. 2, the side of the inlet 24 into which the moisture adjusting material 1 is charged is a spraying area 26 for spraying sewage, and the compost C outlet 25 side is composted without spraying sewage. A ripening region 27 (fermenter is formed here) in which C is fermented and matured is divided at a predetermined ratio (for example, half). In addition, the ratio of the spreading | spreading area | region 26 and the maturation area | region 27 can be suitably changed with the increase / decrease in the processing amount of the sewage H, the kind of compost manufactured.
[0031]
The spraying device 3 is attached to the stirring means 4 at the upper part of the treatment tank 2, and has a sewage reservoir 31 formed in a substantially semicircular tubular shape capable of storing a predetermined amount of sewage H containing solid matter H 1, and a large number of sewage reservoirs 31 An outflow port 32 is provided. The sewage H is supplied from the supply means 6 to the sewage reservoir 31 and overflows from the sewage reservoir 31 and flows down from the outlet 32 to the treatment tank 2 when the amount exceeds a predetermined amount.
[0032]
The stirring means 4 suspends the stirring device 41 suspended above the processing tank 2 and the stirring device 41 so as to be freely movable in the processing tank 2 in the vertical and horizontal directions (longitudinal direction and width direction of the processing tank 2). It is mainly comprised from the moving apparatus 45, and the waste water H containing the solid substance H1 and the moisture adjusting material 1 are stirred and mixed. The aerobic bacteria can be activated by stirring, and the stirring means 4 has a transfer function capable of transferring the mixture M of the moisture adjusting material 1 and the sewage H.
[0033]
The stirring device 41 includes two screws 42, a motor 421 that drives the screw 42, and a speed reducer 422 that reduces the speed of the motor 421 and increases the driving torque.
[0034]
The screw 42 is attached so that the two spiral blades 42b enter the two parallel rotating shafts 42a. The speed reducer 422 divides the rotational force of the motor 421 into two parts, The rotary shaft 42a of the screw 42 is configured to be driven to rotate in opposite directions. The two screws 42 are arranged back and forth in the direction toward the side walls 21 and 22.
[0035]
Further, the rotation axis 42a of the screw 42 can be adjusted in the angle of the rotation axis around the support pin 43 by a driving device using a hydraulic cylinder (not shown). The direction of the surface passing through the rotation axis is rotatable at least 90 degrees in the forward direction. Then, as shown in FIG. 3, the screw 42 is tilted and rotated forward (leftward in FIG. 3) and moved forward, whereby the material in front is scraped up by the blades 42b, and the scraped material is broken by a broken line. It falls backward as indicated by arrow T ′. That is, since the forward material is moved forward while dropping, the tilted screw 42 has a material transfer function.
[0036]
Note that the number of screws 42 is not limited to two, and the function can be exhibited by one or three or more screws. The stirring capacity increases according to the number of screws 42, but there is also an increase in cost, and as a result of repeated experiments, it has been found that two are the most efficient.
[0037]
The moving device 45 includes a longitudinal direction moving device 46 that moves the stirring device 41 in the longitudinal direction of the processing tank 2, and a width direction moving device 47 that moves the stirring device 41 in the direction of the side walls 21 and 22 of the processing tank 2.
[0038]
The longitudinal movement device 46 includes a frame 462 on which wheels 461 are mounted on rails (not shown) of the upper surface portions 21a and 22a of the side walls 21 and 22 of the processing tank 2, a motor 463 that drives the wheels 461, and a frame 462. The work table 464 is mounted on the work table 464, and a control panel 465 that can be operated by a worker on the work table 464.
[0039]
The width direction moving device 47 includes a frame 473 having wheels 472 provided on a rail for moving in the width direction (not shown) provided on an arch frame 471 attached to the frame 462 of the longitudinal direction moving device 46, and frame movement. The apparatus 474 is configured. The frame moving device 474 has a configuration in which a wire hung on the frame 473 is driven by a motor.
[0040]
The recovery means 5 is means for recovering the sewage H when the sewage H applied to the moisture adjusting material 1 by the spraying device 3 reaches the bottom surface 23 of the treatment tank 2 without being mixed with the moisture adjusting material 1. 23, a plurality of longitudinal sewage channels 51, a plurality of widthwise sewage channels 52 connecting the longitudinal sewage channels 51, a longitudinal sewage channel 51a extending to the outside of the treatment tank 2, and the longitudinal sewage channels. From the collection tank 53 that collects the sewage H in the plurality of sewage paths 51 and 52 by receiving the sewage H flowing in the channel 51a, the pump 54 and the pipe 55 that pump the sewage H collected in the collection tank 53 to the sewage tank 7 It is configured.
[0041]
The supply means 6 includes a suction pipe 61 extending to the sewage tank 7, a suction pump 62 attached to the moving device 45 of the stirring means 4 above the sewage tank 7, and a supply pipe 63 for supplying the sewage H sucked to the spraying device 3. It consists of. The suction pump 62 is a switch provided in the control panel 465 and can be selected to be interlocked with the operation of the stirring means 4 or to be activated or deactivated independently of the operation of the stirring means 4.
[0042]
In addition, in the longitudinal direction sewage channel 51 and the width direction sewage channel 52 of the recovery means 5, air is used so that the mixture M of the moisture adjusting material 1 and the sewage H can promote fermentation and can produce high-quality compost C. A blower pipe 8 having a blowout hole 81 is inserted, and the blower pipe 8 is configured such that air A is sent from blowers (not shown) provided on the side walls 21 and 22. Here, the widths of the longitudinal direction sewage channel 51 and the width direction sewage channel 52 are larger than the outer diameter of the blower pipe 8, and the sewage H flows into the gaps.
[0043]
In addition, a roof of the building is provided above the treatment tank 2 to prevent intrusion of rainwater, and the side wall of the building is opened to ensure air permeability with outside air.
[0044]
The sewage treatment method by the above sewage treatment apparatus 100 will be described below.
[0045]
First, sewage H (feces and urine) containing solid matter H1 discharged from livestock and the like is charged into the sewage tank 7. Further, the moisture adjusting material 1 such as bark is fed from the charging port 24 of the processing tank 2.
[0046]
Then, the stirring means 4 is positioned in the spraying region 26 (see FIG. 2), and the stirring device 4 is operated while spraying the sewage H by operating the spraying device 3 in the spraying region 26. At this time, while rotating the screw 42 of the stirring device 41 of the stirring means 4, the screw 42 is moved in the direction of the side wall 22 of the processing tank 2 as indicated by the arrow S, and when reaching the side wall 22, the screw 42 is moved forward moderately (input). For example, it is moved 50 cm to the mouth 24 side), and is moved in the direction of the side wall 21 from the position. And if it reaches the side wall 21, it stirs zigzag so that it may advance appropriately similarly.
[0047]
In this stirring operation, by tilting the screw 42 in the forward direction, as shown by an arrow T in FIG. 2, the mixture M of the moisture adjusting material 1 and the sewage H that have been scraped up is gradually transferred to the aging region 27 side. can do.
[0048]
The amount of sewage H that can be sprayed by the spraying device 3 depends on the amount of the moisture adjusting material 1 that has been put into the treatment tank 2, but even if the sewage H is sprayed excessively, the sewage H remains on the bottom surface 23 of the treatment tank 2. Since it reaches the sewage tank 7 by the pump 54 from the grooves 51 and 52 of the recovery means 5 through the recovery tank 53, it is not necessary to worry too much about the input amount of the sewage H.
[0049]
In the chain type stirring means shown in the conventional example, if the moisture content of the sewage H mixed with the moisture adjusting material 1 is too high, fine components such as the chain easily cause problems such as corrosion. However, since the screw 42 used in this embodiment has a simple structure and the blades 42b can be made strong, durability is ensured even if the moisture content is increased. It does not hinder the stirring work.
[0050]
Therefore, a large amount of sewage H can be treated by sequentially supplying the moisture adjusting material 1 from the inlet 24. Moreover, since the sewage H containing the solid matter H1 can be sprayed, there is no need for a device for separating the solid matter H1 from the sewage H as in the conventional septic tank or the separator 91 shown in FIG. 6, and the cost of such a separation device. Can be reduced. In addition, a filter is often used for the apparatus that separates the solid matter H1 from the sewage H. Since this filter easily clogs, maintenance is troublesome. However, in the present invention, the moisture adjusting material 1 serves as a filter, and the filter is mixed with the sewage H by the stirring means 4 to form a new filter at all times, so that a problem such as clogging does not occur.
[0051]
The mixture M of the moisture adjusting material 1 and the sewage H that has been stirred for a predetermined time in the spraying region 26 is transferred to the aging region 27 as indicated by an arrow T, and the sewage H is removed by the stirring means 4 in the aging region 27. Agitation is carried out without spraying. Moreover, air is supplied to the mixture M from the ventilation pipe 8 provided in the groove | channels 51 and 52 of the bottom face 23 of the processing tank 2, and fermentation is accelerated | stimulated. In this fermentation process, in addition to the fermentation process performed by the microorganisms, the water contained in the mixture M is also blown into the air by fermentation, and the sewage process is also performed in the fermentation process. Stirring in the ripening region 27 may be about once a day, and good compost C is produced in about 20 to 30 days after the material is charged.
[0052]
Dispersed sewage H is used as compost C and does not discharge to the outside unlike conventional septic tanks, so it does not pollute the surrounding environment such as rivers and groundwater, and stirring means 4 is a conventional chain. Compared to methods using the above, etc., the amount of jumping into the air is small, so that the generation of bad odor can be reduced and the sewage treatment apparatus is environmentally friendly.
[0053]
In other words, since the sewage treatment apparatus 100 has a plurality of functions, when compared with the system shown in FIG. Can do. Looking at this in terms of cost, the sewage treatment apparatus 100 can cover the cost level of the compost maker 94 of the system shown in FIG. 6, and three kinds of expensive apparatuses (separator 91, septic tank 92, The cost of the dehydrator 93) can be saved.
[0054]
In the septic tank 92 in the system shown in FIG. 6, BOD indicating the degree of contamination of sewage is limited to 8,000 and SS is limited to 16,000. However, in the sewage treatment apparatus 100, BOD 24,000 and SS80 are experimentally determined. It is known that 1,000 sewage can be treated. The degree of contamination of livestock manure is BOD 16,000 and SS 74,000 in the cattle manure mixed state, and BOD 24,000 and SS 80,000 in the swine manure mixed state (from data presented by the Central Livestock Association). In the system shown in FIG. 5, it is understood that the separator 91 that reduces the degree of contamination of the sewage introduced into the septic tank 92 to a predetermined position is necessary.
[0055]
Moreover, it is necessary to maintain 60 degreeC or more for the fermentation of the compost accompanying drying. However, conventional agitation means using a chain or the like (also called a rotary type, there is also a method of rotating an impeller like a water wheel to scoop up the compost material and fly it backwards). In contrast, the temperature is lowered by stirring, whereas the screw M of the stirring means 4 of this embodiment hardly blows the mixture M. Therefore, the temperature drop due to stirring is small, the fermentation temperature can be maintained even in winter in cold regions, and compost production can be performed through sewage treatment and fermentation throughout the year.
[0056]
The longitudinal sewage channel 51 and the widthwise sewage channel 52 of the collecting means 5 are clogged with compost C little by little. However, if the cleaning is performed once a year, there is no problem in collecting the sewage H. The maintenance of the sewage treatment apparatus 100 does not take time.
[0057]
Moreover, the collection | recovery means 5 is not limited to the said form, What is necessary is just a structure which can collect | recover the sewage H which reaches the bottom face 23 of the processing tank 2. FIG.
[0058]
According to this embodiment, the sewage H containing the solid matter H1 is sprinkled on the moisture adjusting material 1 in the treatment tank 2 and stirred and processed, and the sewage H that has not been mixed with the moisture adjusting material 1 is recovered and again. Since it was set as the method of disperse | distributing and processing to the moisture adjusting material 1, all the waste water H is processed inside the processing tank 2 without isolate | separating a solid substance H1 and a water | moisture content, and it can process a lot of excrement by a simple method. It becomes possible.
[0059]
Further, the sewage H containing the solid matter H1 is sprayed on the moisture adjusting material 1 by the spraying device 3 and stirred and processed by the stirring means 4, and the sewage H not mixed with the moisture adjusting material 1 is recovered by the collecting means 5. Since the device is again sprayed on the moisture adjusting material 1 and processed, the sewage H is completely processed inside the processing tank 2 without using a device for separating the solid matter H1, and a large amount of manure is processed with a simple device. It becomes possible.
[0060]
In addition, since the sewage H is mixed with the moisture adjusting material 1 and transferred and composted, and the new moisture adjusting material 1 is introduced so that the sewage H can be sprayed, the sewage H is treated one after another. With this treatment, compost is produced.
[0061]
【The invention's effect】
As described above, in the sewage treatment method according to claim 1 of the present invention, the sewage containing solid matter is sprayed and treated in the moisture adjusting material in the treatment tank, and the sewage not mixed with the moisture adjusting material is Because it is a method that is recovered and sprayed again on the moisture adjusting material, all wastewater is treated inside the treatment tank without separating solids and moisture, and a large amount of manure can be treated with a simple method. It has the effect of becoming.
[0062]
Further, in the sewage treatment apparatus according to claim 3 of the present invention, the sewage containing solid matter is sprayed on the moisture adjusting material by the dispersing device and stirred and processed by the stirring means, and the sewage not mixed with the moisture adjusting material is Since it is a device that is recovered by the recovery means and sprayed again on the moisture adjusting material, it is processed without any use of a device that separates solids and moisture, and all sewage is processed inside the processing tank. There is an effect that it becomes possible to process.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment (1) of a wastewater treatment method and apparatus according to the present invention.
FIG. 2 shows an embodiment (1) of the sewage treatment method and apparatus according to the present invention, wherein (a) is a plan view and (b) is a side sectional view.
FIG. 3 is a front view of main components of Embodiment (1) of the sewage treatment method and apparatus according to the present invention.
4 is a cross-sectional view taken along line XX of FIG.
FIG. 5 is a block diagram showing a conventional sewage treatment method and apparatus.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Moisture adjusting material 2 Processing tank 3 Spreading device 4 Agitation means 5 Recovery means 6 Supply means 7 Sewage tank 8 Blow pipe 21 Side wall 21a Upper surface part 22 Side wall 22a Upper surface part 23 Bottom face 24 Inlet 25 Outlet 26 Spreading area 27 Aging area 31 Wastewater reservoir 32 Outlet 41 Stirring device 42 Screw 42a Rotating shaft 42b Blade 43 Support pin 45 Moving device 46 Longitudinal moving device 47 Widthwise moving device 51 Longitudinal sewage channel 51a Longitudinal sewage channel 52 Widthwise sewage channel 53 Recovery tank 54 Pump 55 Pipe 61 Suction pipe 62 Suction pump 63 Supply pipe 81 Air blowing hole 91 Separator 92 Septic tank 93 Dehydrator 94 Composting machine 100 Sewage treatment device 421 Motor 422 Decelerator 461 Wheel 462 Frame 463 Motor 464 Work table 465 Control panel 471 Arch frame 472 Wheel 473 Frame 474 Frame moving device A air C compost M mixture H wastewater H1 solids

Claims (5)

Sprinkle sewage containing solids from livestock etc. on the water conditioner deposited in the treatment tank, stir the moisture conditioner and sewage with stirring means, and collect the sewage collected at the bottom of the treatment tank The sewage treatment method is to divide the treatment tank into a sprinkling region that stirs while sprinkling sewage and a ripening region that stirs without sprinkling sewage and matures fermentation with drying, and the stirring means is A sewage having a transfer function capable of transferring a mixture of a moisture adjusting material and sewage, and fermenting the mixture while stirring from the spraying area side to the aging area side at a predetermined speed to produce compost Processing method . 2. The sewage treatment method according to claim 1, wherein the stirring means includes one or a plurality of screws, and the stirring is performed by rotating the screw and moving the inside of the treatment tank. A processing tank for depositing moisture adjusting material, a spraying device for spraying sewage containing solid matter from livestock, etc., a stirring means for stirring the moisture adjusting material and sewage, and a collecting means for recovering water accumulated in the lower part of the processing tank And supply means for supplying the recovered sewage to the spraying device again, and a ripening region in which the treatment tank is stirred while spraying the sewage, and a ripening region in which stirring is performed without spraying the sewage and the fermentation is matured. The sewage treatment apparatus in which the agitation means has a transfer function capable of transferring the mixture of the moisture adjusting material and the sewage at a predetermined speed while stirring the mixture from the spraying area side to the aging area side . 4. The sewage treatment apparatus according to claim 3, wherein the agitation unit includes one or a plurality of screws and is suspended above the treatment tank so as to be movable. 5. The sewage treatment apparatus according to claim 3, wherein the recovery means comprises a plurality of sewage channels provided on the bottom surface of the treatment tank and a recovery tank that collects the sewage in the plurality of sewage channels. apparatus.

Images