JPH07327535A - Waste-disposing system for domestic animals - Google Patents

Abstract

PURPOSE:To provide a waste-disposing system for domestic animals of saved energy, saved labor and lowered costs by reducing the malodor of excretions as an origin of malodor and by recycling the water cleaned by treatment with out discharging any water outside the system. CONSTITUTION:In the system for disposing the waste from domestic animals, a storage pit 2 is provided in a cattle shed 1 to store the waste as a mixture of urine and feces and the sources of microorganisms are added to the pit 2. Outside the cattle shed 1, a waste disposer of a multi-tank type 5 is installed and the waste in the storage pit 2 is fed to the disposer. Further, a utility tank is set to store the treated and cleaned water for reusing and the disposer is equipped with at least a precipitate and scum remover, a water-cleaning accelerator, an evaporation accelerator, a mean of purification by plant, a filtering mean by alternately flowing up and down and a drainer.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a livestock manure treatment system, and more particularly to a livestock manure treatment system that treats manure and sewage mixed wastewater using a microbial purification action.

[0002]

2. Description of the Related Art Conventional livestock manure processing systems are roughly classified into manure separation processing and manure mixing processing. In the manure separation treatment method, solid matter and liquid matter are separated, and the solid matter is agitated and fermented to be composted into a fertilizer. Liquid materials are purified and discharged (Japanese Patent Publication No. 55-88637 and others).

This method involves many operations such as transferring, stirring, aerating, and carrying out manure, and requires a great deal of labor, special mechanical equipment, and considerable land. Further, in the purification treatment of sewage, special mechanical equipment, power supply equipment, and maintenance are required, and the running cost becomes high. As described above, the manure separation processing method has many problems in terms of labor and cost in terms of livestock management.

[0004] The manure and urine mixing treatment method is a treatment method in which feces and urine, washing water, etc. are mixed and ripened by the action of microorganisms (Act No. 5-16195, etc.). This method does not require special mechanical equipment, is labor-saving, and the treated water can be returned to the land as liquid fertilizer. However, it was necessary to secure a considerable amount of land for land return, and there was a drawback in that a bad odor was scattered when the land was returned.

By the way, in recent years, attention has been paid to the treatment of excreta using microorganisms. FIG. 6 is a longitudinal sectional view showing an example of a conventional livestock excrement treatment system using an actinomycete material. The arrow in the figure shows the flow of manure-mixed wastewater mixed with actinomycetes. Livestock excrement flows down to the excrement storage pit 2 provided in the lower part of the floor of the barn 1 and is stored in the excrement mixed state.

[0006] The slurry-like manure and sewage mixed with the actinomycetes material is transferred to the first storage tank 34, and the action of the actinomycetes material causes decomposition of organic substances to reduce the malodor. When the purification progresses, the clean water is transferred to the second storage tank 35, and the treated water in the second storage tank 35 is returned to the manure storage pit 2 again to activate the actinomycetes in the manure storage pit 2. , Circulate.

The treated water in the second storage tank 35 can be used as liquid fertilizer (Modern Agriculture: October 1992 issue). As described above, a microbial material using actinomycetes has made it possible to reduce the malodor, but the actual usage of this actinomycete is a state of thought and error.

[0008]

In recent years, particularly environmental problems have been drawing attention, and pollution control is a social demand, and the malodor is one of the social problems.

[0009] The problem in the livestock industry is to fight against the malodor of the manure, and as a countermeasure against it, the cost unrelated to productivity is high and the cost is increased. In addition, the realization of cost reduction is an important issue in today's international competition.

The present invention realizes a low-cost livestock excrement treatment system by energy saving and labor saving management by reducing the offensive odor of feces and urine, which is a source of offensive odor, and by eliminating the drainage of waste water by recycling the treated water. It is in.

[0011]

According to a first aspect of the present invention, there is provided a system for purifying manure of livestock, wherein at least three or more tanks are arranged in a water flow direction shown by an arrow in FIG. A tank 5 is provided. Then, the overflow ports 11 to 14 between the respective tanks constituting the multi-tank type manure processing tank 5.
In addition, the manure treatment system for livestock is configured with a step which becomes lower in the downstream tank so that the manure-mixed wastewater naturally flows down and moves to the next tank.

According to a second aspect of the present invention, in a system for purifying the excrement of livestock, there is provided a multi-tank type manure treatment tank 5 in which at least three tanks are arranged in series in the water flow direction shown by the arrow in FIG. . The capacity of each of the tanks constituting the multi-tank manure processing tank 5 from the first processing tank to the final tank is successively reduced.

According to a third aspect of the present invention, in a system for purifying manure of livestock, a manure storage pit 2 for storing manure mixed wastewater into which a microbial material has been stored is provided at an upstream side of the multi-tank manure treatment tank 5. To be installed. Then, a drop is provided so that the manure-mixed wastewater naturally flows down from the manure storage pit 2 to the first tank of the multi-tank manure treatment tank 5.

According to a fourth aspect of the present invention, a livestock excrement treatment system that circulates and utilizes the microorganisms of the input material by providing means for returning the treated water in the final tank of the multi-tank type excrement treatment tank 5 to the in-house manure storage pit 2. Is.

According to a fifth aspect of the present invention, a scum remover 21 for removing suspended matter (scum) inside the multi-tank manure treatment tank 5 downstream of the first tank can be moved up and down. It is a livestock manure treatment system installed in.

According to a sixth aspect of the present invention, the multi-tank manure treatment tank 5 has one or more tanks other than the first tank provided with a transpiration promoting means for promoting evaporation and diffusion of water in the treatment tank. It is a manure processing system.

According to a seventh aspect of the present invention, there is provided in one or a plurality of tanks other than the first tank of the multi-tank manure treatment tank 5 a plant purification means for purifying the inside of the tank by using floating plants. It is a manure processing system.

According to claim 8, a plurality of small tanks are arranged in series in front of the final overflow port of the multi-tank manure treatment tank 5 so that the treated water flows vertically in each small tank. In addition, the outlets are alternately provided on the upper side and the lower side on the partition wall 28b between the small tanks. Then, in each of the small tanks, a removable filter medium 28a is provided.
Has been inserted.

According to a ninth aspect of the present invention, in the final tank of the multi-tank type manure processing tank 5, the float 33 is connected to the flexible pipe 32 connected to the drainage pump 30, and the water inlet at the tip of the flexible pipe 32 is connected to the final tank. Is a livestock manure treatment system located at a predetermined distance below the water surface.

According to a tenth aspect of the present invention, in a system for purifying the excrement of livestock, a dung sewage storage pit 2 into which a microbial material is input is provided in a livestock house, and outside the livestock house, a storage pit 2 is provided. A multi-tank type manure treatment tank 5 in which the excrement-mixed wastewater is transferred and stored, and a treated water use tank 31 for reusing the treated water after purification are provided.

The multi-tank manure treatment tank 5 includes at least a means for removing precipitates and scum, a purifying promoting means, a transpiration promoting means, a plant purifying means, and an upper and lower alternating flow path type filtering means. It has drainage means.

[0022]

According to the first aspect of the present invention, when the multi-tank manure treatment tank 5 is constructed such that the overflow ports between the respective tanks are stepped to allow the manure-mixed wastewater to flow down naturally, the wastewater is filled in each tank. After that, it overflows and is sequentially sent to the next tank. For this reason, it flows very slowly, allowing free flow of microorganisms. Further, by adopting the multi-tank configuration, it is possible to efficiently combine other biological or physical purification means in order to complement the purification action of microorganisms.

When the capacity of each tank of the multi-tank type manure treatment tank 5 is configured to be gradually reduced from the first tank to the last tank as in claim 2, purification of waste water in each tank is gradually advanced. Therefore, the residence time can be sequentially shortened.

When the manure storage pit 2 in the livestock shed and the multi-tank type manure treatment tank 5 are installed with a head as in claim 3, the waste water filled in the manure storage pit 2 and overflowing is naturally flowed down. Is transferred to the multi-tank manure treatment tank 5.

Since the manure-mixed wastewater in the storage pit 2 is in the form of a slurry and easily flows, the transfer passage provided between the storage pit 2 and the multi-tank manure treatment tank 5 is a pipe or a gutter. If it is connected with such as, it can be transferred by gravity flow.

When the means for transferring the treated water in the final tank of the multi-tank type manure treatment tank 5 to the manure storage pit 2 again is provided as described in claim 4, the microorganisms having a purifying action are used for the manure storage pit. It circulates in each tank of 2 and the multi-tank type manure processing tank 5. As a result, the hungry microorganisms in the final tank are returned to the manure storage pit 2, so that the purifying action in the pit is restored.

When a vertical movement type scum remover 21 for removing suspended matters (scums) 23 in the treatment tank is provided as in claim 5, it is generated in the fermentation process of the manure and sewage mixed wastewater in the treatment tank. The suspended solids can be scooped up and removed outside the tank.

Since the organic decomposition ability of microorganisms is limited, it is sufficient to decompose only the organic matter dissolved in the wastewater by removing the scum 23, which takes a long time to decompose the organic matter, and reducing the amount. , The cleaning time can be shortened.

When the transpiration promoting means for reducing the water content of the wastewater is provided as in claim 6, the evaporation of the water content of the manure-mixed wastewater is significantly faster than the natural evaporation, and the wastewater is efficiently reduced. The amount of post-treatment and off-farm emissions can be reduced.

When the plant purification means is provided as in claim 7, the floating plant takes in the manure-mixed wastewater as a nutrient through the root, and nitrogen and phosphorus in the wastewater are absorbed. Therefore, the decrease in the total nitrogen amount and the total phosphorus amount due to the purification action of the microorganisms can be complemented and further reduced.

When the filtering device 28 is provided, which is divided into a plurality of sections and has a flow path that flows vertically, as described in claim 8, the waste water flows from the top to the bottom in the first section, and the filter medium 2
Pass 8a. After passing, the flow direction reverses and flows from the bottom to the top, passing through the next filter medium 28a. In this way, the particles are sequentially passed through the filter material 28a and filtered. Since the upper part is open, the filter medium can be easily replaced.

When the flexible pipe 32 is connected to the float 33 as in the ninth aspect, the water suction port is located at a fixed position below the liquid surface, and floating substances such as dust on the liquid surface are not sucked into the water suction port. The treated water can be drained smoothly. In addition, since it is far from the bottom of the tank, sediment is not sucked in.

According to a tenth aspect of the present invention, in the purification system in which the manure / urine mixed wastewater storage pit 2 and the multi-tank manure treatment tank 5 and the treated water utilization tank 31 are provided outside the barn, the inside of the storage pit 2 is Microorganisms are proliferated and organic decomposition of the manure-mixed wastewater begins, and the slurry-like manure-mixed wastewater in the process of organic decomposition is transferred to the multi-tank manure treatment tank 5 installed outside the livestock house.

The multi-tank type manure treatment tank 5 has a deposit and scum removing means, a purification promoting means, a transpiration promoting means, a vegetable purifying means, an up-and-down flow path filtering means, and a draining means. The feces and urine mixed sewage moves sequentially through each tank. First,
The sediment and scum 23 are removed by the sediment and scum removing means. Next, in the purification promoting means, the organic substances are sufficiently decomposed by the microorganisms. Next, in the evaporation promoting means, the volume of the wastewater is reduced. Next, in the plant-based purification means, the contents of nitrogen and phosphorus in the wastewater are adjusted. Next, the impurities in the wastewater are filtered by the vertical channel type filtration means. Finally, the treated water that has been transferred to the drainage means and is sufficiently purified is stored in the treated water utilization tank 31 and is used for liquid fertilizer or for utilization of middle water in the livestock house 1.

By thus constructing a multi-tank treatment tank which utilizes the purification action of microorganisms and is combined with a biological or physical purification means, the offensive odor in question can be reduced and External drainage can be realized, and a low-cost livestock manure processing system can be realized by energy saving and labor saving management.

[0036]

EXAMPLES Next, examples of practical application of the livestock excrement treatment system according to the present invention will be described.

FIG. 1 is a flow chart of a livestock manure processing system according to the present invention. FIG. 2 is a plan view showing an embodiment of the multi-tank manure treatment tank 5 according to the present invention. FIG. 3 is a schematic view showing an embodiment of the multi-tank manure treatment tank 5 according to the present invention. The arrow in the figure indicates the flow direction of the manure-mixed wastewater.

As shown in the figure, a manure storage pit 2 is arranged immediately below the slaughterhouse in the barn 1 so that fresh manure is always collected in the manure storage pit 2 through the slatted floor 3. In the manure storage pit 2, a microbial material having an organic substance decomposing ability is put into the wastewater. As the microbial material, actinomycetes material is preferable. In the example, wastewater treatment bacteria manufactured by Biomake Co., Ltd. was used.

In order to promote low malodor on the floor surface, microbial materials are sprayed on the floor surface or orally fed to livestock by adding feed. In addition, in order to control the generation of sewage, we will implement wet feeding and abolish washing with external water.

The manure storage pit 2 has a water depth of about 60 cm at the deepest part in order to maintain an aerobic condition.

A drain port 4 is provided at a lower portion of the manure storage pit 2 at a lower position, and the manure sewage overflowing from the drain port 4 is naturally flowed down to a multi-tank type manure treatment tank 5 through a pipe. Therefore, the manure treatment tank 5 is installed at a position lower than the livestock shed 1 so that the manure treatment tank 5 is transferred from the manure storage pit 2 by gravity flow.

The manure treatment tank 5 is of a multi-tank type having 5 tanks as a basic structure, and has a structure in which manure sewage naturally migrates between adjacent tanks by overflow. By adopting the natural flow-down method in this manner, energy saving can be realized because no special mechanical equipment for transfer is required.

The overflow port 11 is provided so that the maximum water depth of the first tank 6 is about 160 cm. The heights of the overflow ports 12 to 14 provided on the inter-tank walls of the second tank 7 and thereafter are each lowered by 5 cm. By thus forming the steps in the overflow ports 11 to 14 of each tank, the wastewater can be smoothly transferred by natural flow.

The capacities of the respective tanks are 5 days for the first tank 6, 4 days for the second tank 7, 3 days for the third tank, and 4 days for the fourth tank, based on the amount of excrement produced per day. 9 for 2 days, 5th tank 10
Is for one day.

From the first tank 6 to the third tank 8 having a large capacity,
So that the sewage flows over time as much as possible,
As shown in FIG. 2, passage walls 15 to 17 are provided in the tank to lengthen the flow path. As a result, the residence time becomes long, and the organic matter decomposition of microorganisms is sufficiently performed. In order to maintain aerobic conditions in each treatment tank, the entire top surface is open. Further, the roof 18 is attached with a transparent covering material. Thereby, it is possible to prevent the mixing of rainwater, and to promote the transpiration effect by sunlight energy, activate the activity of microorganisms, and increase the reproduction of floating plants. The eave height of the roof 18 is about 180 cm in order to secure a working space.

Next, each tank of the multi-tank type manure processing tank 5 will be described in detail. The first tank 6 is a manure treatment tank having a sediment and scum removing function, and the rough screen 1
9, a settling auxiliary tank 20, a scum remover 21, and a scum outflow prevention overflow port 11 are provided.

The slurry-like raw manure and sewage that has flowed in from the inflow pipe 22 of the first tank 6 is provided with a sedimentation auxiliary tank provided in the first tank 6 after solid matters such as hairs and escas are removed by the coarse screen 19. Run down to 20.

The precipitation auxiliary tank 20 is provided immediately below the outlet of the inflow pipe 22, and a substance having a large specific gravity is precipitated. The precipitation assisting tank 20 is provided in a tank as narrow as possible so that it can be easily collected and removed so that the precipitate does not diffuse.

A large amount of scum 23 is generated on the liquid surface of the raw manure and sewage flowing into the first tank 6. The scum 23 is scooped up by the scum remover 21 installed just before the overflow port 11 and removed to the outside of the tank.

FIG. 4 is a perspective view showing an embodiment of the scum remover according to the present invention. This scum remover 21 is used for the tank wall 2
It is composed of a removing plate 21b which is moved up and down by rotating the supporting device provided at 4 as a fulcrum, and a winch 21c for moving the removing plate 21b up and down.

When removing the scum 23, the winch 21c is activated from the state where the tip 21d of the removal plate 21b is submerged in the tank, and the wire 21e attached to the removal plate 21b causes the winch 21c to move. Roll up. At this time, the scum 23 floating on the water surface is removed by the removal plate 21.
It is scooped up at the part where the mesh 21f of b is stuck, and while it is temporarily stopped, sewage falls from the mesh 21f,
Draining water is sufficiently done. The removing plate 21b is provided with a side wall 21g so that the scum 23 does not spill from the side portion. Scum 23 scooped up and drained
Are scraped out of the tank wall 24 as indicated by an arrow h in the figure.

Using the outside of the outer wall 24 of the manure processing tank, a composting site is integrally provided, the removed scum 23 is stored, dried and ripened, and then used as fertilizer.

Since the scum 23 covers the water surface with a thickness of 20 cm or more, the inflow port 11a is opened about 60 cm below the water surface so that the scum 23 does not flow out to the second tank 7. An overflow port 11 with scum outflow prevention is provided.

The second tank 7 is a manure treatment tank having a purification promoting function, and a removable mesh is provided at the overflow port 12 to prevent the floating substances from flowing out to the third tank 8.

Since the scum 23 is removed in the first tank 6,
In the second tank 7, aerobicity is improved and the purification action of microorganisms is promoted. Further, since the flow path is long due to the passage wall 15, the sewage slowly flows over time to sufficiently decompose the organic matter, and the organic matter flows down to the third tank 8.

The third tank 8 is a transpiration promoting tank and is provided with a transpiration promoting device 25. The transpiration promotion device 25
In order to immerse the film 26 in the liquid from the upper part of the treatment tank, a large number of film 26 such as linen cloth are suspended, and the capillarity of the film 26 absorbs water to evaporate from the entire surface of the film 26. By this evaporation, the amount of waste water can be reduced. Also,
In addition to this, when a large ventilation fan or the like is provided and air is blown to the suspended film 26, a further effect can be obtained.

A desorption type mesh is provided at the overflow port 13 of the third tank 8, and the suspended matter is removed by the mesh and flows out to the fourth tank 9. The mesh used is one millimeter or less.

The fourth tank 9 is a processing tank having a plant purification function, and is provided with floating plants 27 and a vertical flow path type filtration device 28. The floating plant 27 is a floating plant having a purifying action such as water hyacinth, and is floating-grouped in the treatment tank. The floating plant 27 absorbs nitrogen and phosphoric acid in the wastewater.

Various studies have been conducted on the water purification effect of plants, and in the case of water hyacinth,
Nitrogen removal rate: about 0.5 to 1.6 g / m ² / day, phosphorus removal rate: about 0.1 to 0.4 g / m ² / day (Tsukuba Research Support Center bulletin: No. 19) It is also being done.

An up-and-down flow path type filtering device 28 is provided at a portion of the overflow port 14 to the fifth tank 10. FIG. 5 is a sectional view showing an embodiment of an up-and-down flow path type filtration device according to the present invention.

The upper and lower flow path type filtration device 28 has a side wall 28b.
It is composed of a small tank divided into four compartments, and various kinds of filter media 28a are inserted into each compartment in a water-permeable bag. The treated water flows vertically as indicated by the arrow, and impurities are removed by the filter material 28a.

Since the filter material 28a is removable, it can be easily replaced if it becomes clogged. In addition, the upper and lower flow paths can secure a sufficient space in a space-saving manner.

The fifth tank 10 is a tank for draining treated water, and the treated water that has been sufficiently purified flows into the fourth tank 9 through the overflow port 14. This treated water is sucked from the float type suction pipe 29 and is sent by the drainage pump 30 to the treated water utilization tank 31 installed at the upper part of the barn 1.

The float type suction pipe 29 has a float 33 attached to the suction pipe 32 such that the tip of the float type suction pipe 29 is always positioned about 20 cm below the water surface. Therefore, since the float type suction pipe 29 is opened at 20 cm below the surface of the water, it does not suck in suspended matter on the surface of the water and sends only sufficiently purified treated water to the treated water utilization tank 31. can do. Further, since it is opened apart from the bottom of the tank, it does not suck in the precipitate.

The treated water stored in the treated water utilization tank 31 is reused and is not discharged to the outside of the farm. The method of reuse is (1) promotion of microbial activation by diluting the slurry in the storage pit with a high concentration by returning to the manure storage pit 2, (2) washing of the barn 1 after moving livestock, (3)
Promote lowering of the temperature inside the house by using the animal body shower as a measure to prevent summer heat in the summer, or by using the transpiration set with the in-house blower, (4)
Examples include sprinkling water for greening on the farm and returning as liquid fertilizer. In addition, the fourth tank 9
The treated water inside can also be used for land return.

[0066]

EFFECTS OF THE INVENTION As described in claim 1, by providing a step between the respective tanks of the multi-tank type manure treatment tank 5 and allowing them to flow naturally, the flow of microorganisms is freely carried out and a sufficient purification action is exerted. Therefore, the purification action of microorganisms can be fully utilized, a special mechanical device is not required for transfer, and cost reduction can be realized.

By using a multi-tank treatment tank, the combination with a biological or physical purification method can be optimized and the purification action of microorganisms can be used efficiently.

[0068] As in claim 2, in each of the multi-tank type manure treatment tanks 5, the capacity of the tanks on the downstream side is sequentially reduced in accordance with the content of organic substances decomposed by microorganisms, thereby saving space. Cost reduction.

According to the third aspect of the present invention, since the manure and sewage mixed sewage is transferred from the in-house manure storage pit 2 to the first tank of the multi-tank type manure treatment tank 5 by natural flow, a mechanical device for transfer is used. It is not necessary and cost can be reduced. Further, since the mixed sewage is in the form of a slurry that easily flows, the transfer passage from the storage pit 2 to the first tank of the multi-tank manure treatment tank may be an ordinary pipe or a gutter, which is economical. Target.

[0070] As in claim 4, the treated water in the final tank of the multi-tank type manure treatment tank 5 is again transferred to the manure storage pit 2 to reuse the purified water so that the entire purification system has a circulation function. By doing so, it is possible to eliminate the discharge of manure treated wastewater to the outside of the farm, and to realize a clean manure treatment system that does not affect the environment outside the farm.

Further, the hungry microorganisms are returned to the excrement storage pit 2 and the purification action by the microorganisms is restored, so that the input amount of the microbial material can be greatly saved.

By providing the scum remover 21 as in claim 5, the suspended matter in the processing tank is removed.
The aerobic property is improved, the microorganisms are activated, and the purifying action can be promoted. In addition, the removed scum 23 is dried,
It can be used as fertilizer by ripening.

By providing the transpiration promoting means for reducing the water content of the wastewater as in the sixth aspect, the wastewater can be reduced in quantity, so that it is not necessary to discharge the wastewater to the outside of the farm.

By providing the plant-based purification means as in claim 7, the contents of nitrogen and phosphorus in the wastewater are reduced. As a result, the components of nitrogen and phosphorus that are not purified by the organic decomposition action of microorganisms are adjusted, and the purification is promoted.

According to the eighth aspect of the present invention, by providing the up-and-down flow path type filtration device 28 in which a plurality of flow paths are formed so that the flow paths flow vertically, the flow path necessary for filtration is sufficient. Can be secured.

By providing the float type water intake port as described in claim 9, suspended solids and sediments such as dust on the liquid surface are not sucked in from the water intake port, and only sufficiently purified treated water is obtained. Since it is pumped out, there is no need to provide a special means for removing dust, which is economical.

According to the tenth aspect of the present invention, the treated water is treated by using the purification pit 2 which is provided with the storage pit 2 for excrement and sewage mixed wastewater, and the multi-tank type manure treatment tank 5 and the treated water utilization tank 31 outside the barn. It can be completely reused, has no discharge to the outside of the farm, and is a pollution-free manure treatment.
Further, since the treatment tanks are multi-tank type, the treatment device provided in each tank complements the purification action of microorganisms, and the efficiency is high and the high purification ability is exhibited.

[Brief description of drawings]

FIG. 1 is a flowchart of a livestock manure processing system according to the present invention.

FIG. 2 is a plan view showing an embodiment of a multi-tank manure treatment tank according to the present invention.

FIG. 3 is a longitudinal sectional view showing an embodiment of a multi-tank manure treatment tank according to the present invention.

FIG. 4 is a perspective view showing an embodiment of a scum remover according to the present invention.

FIG. 5 is a vertical cross-sectional view showing an embodiment of an up-and-down channel type filtering device according to the present invention.

FIG. 6 is a vertical cross-sectional view showing an example of a conventional livestock manure processing system.

[Explanation of symbols]

 1 Barn 2 Manure storage pit 3 Slatted floor 5 Multi-tank manure treatment tank 6 1st tank 7 2nd tank 8 3rd tank 9 4th tank 10 5th tank 11-14 Overflow port 21 Scum remover 25 Evaporation enhancer 27 Plant purification device 28 Vertical flow path filter device 29 Float type suction pipe 30 Drain pump 31 Treated water utilization tank

Claims (10)

[Claims] 1. A system for purifying manure of livestock, comprising a multi-tank manure treatment tank having at least three tanks arranged in series, and each tank constituting the multi-tank manure treatment tank. The livestock excreta treatment system is characterized in that a step is formed at the overflow port between the two so that the mixed wastewater of the excrement naturally flows down and moves to the next tank so that the lower the downstream tank becomes. 2. A system for purifying manure of livestock, comprising a multi-tank manure treatment tank having at least three tanks arranged in series, and each tank constituting the multi-tank manure treatment tank. The livestock manure treatment system, characterized in that the capacity from the first treatment tank to the last treatment tank is gradually reduced. 3. A system for purifying manure of livestock, wherein an in-house manure storage pit for storing a manure-mixed wastewater into which a microbial material has been placed is provided upstream of the multi-tank manure treatment tank, The livestock excrement treatment system according to claim 1 or 2, wherein a drop is provided so that the excrement-mixed wastewater naturally flows down from the pit to the first tank of the multi-tank excrement treatment tank. 4. The microorganism as an input material is circulated and utilized by providing a means for returning the treated water in the final tank of the multi-tank type manure processing tank to a manure storage pit in a livestock shed. The livestock manure treatment system according to any one of Item 3. 5. A scum remover for removing suspended matter inside the multi-tank manure treatment tank downstream of the first tank is vertically movable. The livestock excrement treatment system according to any one of claims 1 to 4. 6. A transpiration promoting means for accelerating evaporation and diffusion of water in the treatment tank is provided in one or a plurality of tanks other than the first tank of the multi-tank manure treatment tank. The livestock excrement treatment system according to any one of claims 1 to 5. 7. A plant cleaning means for cleaning the inside of one or more tanks other than the first tank of the multi-tank manure treatment tank by using floating plants. The livestock excrement treatment system according to any one of claims 1 to 6. 8. A plurality of small tanks are arranged in series in front of the final overflow port of the multi-tank manure treatment tank so that the treated water flows vertically in each small tank. The outlets are alternately provided on the upper and lower sides of the partition walls between the tanks, and a removable filter medium is inserted into each of the small tanks. The livestock manure treatment system according to any one of the above items. 9. In the final tank of the multi-tank manure treatment tank, a float is connected to a flexible pipe connected to a drainage pump, and a water inlet at the end of the flexible pipe is located at a predetermined distance below the water surface of the final tank. The livestock excrement treatment system according to any one of claims 1 to 8. 10. A system for purifying the excrement of livestock, wherein a pit for mixing manure and sewage into which a microbial material is input is provided in a livestock building, and the sewage and mixed wastewater is transferred from the storage pit to the outside of the livestock building. A multi-tank manure treatment tank to be stored and a treated water utilization tank for reusing the treated water after purification are provided. The multi-tank manure treatment tank includes at least a means for removing precipitates and scum, and purification promotion. A livestock excrement treatment system comprising: a means, a transpiration promoting means, a plant purifying means, an upper / lower alternate flow path type filtering means, and a drainage means.