JP3106489U - Livestock excrement purification equipment - Google Patents

Abstract

Purified water that reaches a predetermined standard is obtained from feces and urine of livestock by combining BOD, COD, and SS so as to reach a target value based on the function of a treatment tank based on each process.
[MEANS FOR SOLVING PROBLEMS] An object to be treated by excrement flowing out from a barn to a storage tank (1) is moved to an aeration tank (2), and a part of the object to be treated is precipitated downward while stirring based on contact with circulating air. After the upper part where the BOD is less than or equal to a predetermined value is transferred to the settling tank 3, a part of the processing object is precipitated downward, and the upper part where the SS is less than or equal to the predetermined value is filtered. It is possible to achieve the above-mentioned problem by shifting to 4 and making BOD, COD, and SS lower than a predetermined value based on filtration with molecular sieve particles and porous particles or fine powder. A livestock manure purification device.
[Selection] Figure 1

Description

  The present invention relates to a fecal urine purification apparatus for livestock that obtains purified water from a liquid and solid mixed material by excreta discharged from a barn into a storage tank.

  When manure discharged from livestock bred such as cattle, horses, and pigs is discharged into a storage tank, a liquid and solid mixed material of manure is stored in the storage tank.

  In the apparatus for purifying the mixture, any of aeration, precipitation, filtration, or all processes are employed.

  On the other hand, in purified water based on a livestock manure purification device, biochemical oxygen demand (hereinafter referred to as “BOD”), chemical oxygen demand (Chemical Oxygen Demand) : Hereinafter, abbreviated as “COD” according to a common name, and suspended solid (hereinafter abbreviated as “SS” according to a common name) are required to be a predetermined value or less.

  However, in the conventional purification apparatus, a specific configuration by considering the function sharing such that BOD, COD, and SS are equal to or less than a predetermined amount in each step has not been particularly proposed so far. .

  On the other hand, although a general configuration for obtaining purified water from domestic sludge has been proposed, such a configuration is premised on a biochemical or chemical reaction process, requires a large-scale apparatus, and is easy to process. Purified water cannot be obtained in the process.

  The present invention is based on the function of the treatment tank based on each of the above existing processes, and by combining BOD, COD, and SS so as to reach the target value, a predetermined standard for BOD, COD, and SS from livestock manure It is an object of the present invention to provide a configuration of a purification treatment apparatus that can achieve the above.

In order to solve the above problems, the configuration of the present invention is as follows.
(1) In a livestock manure purification processing apparatus that obtains purified water from a mixture of liquid and solid from manure flowing out from a barn to a storage tank, the object to be processed by the mixture is moved from the storage tank to the aeration tank, While stirring based on the contact, a part of the object to be treated is allowed to settle downward, and the upper part where the BOD is not more than a predetermined value is transferred to the precipitation tank. The upper part where SS is below a predetermined value is transferred to a filtration tank, and based on filtration with molecular sieve particles and porous particles or fine powder in the filtration tank, BOD, While reducing COD and SS to a predetermined value or less, in an aeration tank and a sedimentation tank, a livestock manure purification device based on discharging the portion that has settled downward and remains in the tank to the outside,
(2) A livestock excrement purification apparatus according to (1), characterized in that a predetermined amount or more of natural water, groundwater, or tap water is injected into the aeration tank per day,
Consists of.

  In the present invention, purified water based on a target standard for BOD, COD, and SS can be obtained from livestock manure by a combination of functional sharing of each treatment tank, although it has a relatively simple configuration.

  FIG. 1 shows the basic form of all the devices of the present invention. As is clear from FIG. 1, in the present invention, a liquid and solid mixture of manure discharged from a barn is stored in a storage tank 1. Then, purified water is formed by sequentially purifying the stored manure in the order of the aeration tank 2 → the sedimentation tank 3 → the filtration tank 4.

  In general, at the stage of the storage tank 1, BOD, COD, and SS are in a considerably high state. For example, in the case of manure from the mixture discharged from the barn and stored in the storage tank 1, JIS K 0102 The BOD according to the standard is about 12000 mg / L, the COD according to the JIS standard is about 4000 mg / L, and the SS according to the standard defined by the Environmental Agency Notification No. 59 in 1971 is about 3000 mg / L.

  In the aeration tank 2, while the air is circulated sequentially in the tank, the odor in the excreta from the stored mixture is released to the outside together with the circulating air (of course, deodorizing treatment is performed as necessary). Feces and urine in the aeration tank 2 is stirred by circulation, and with the stirring, the solid-liquid separation of precipitating the solid in the mixture and storing the liquid upward can also be exhibited. Is possible.

  In the aeration tank 2, the BOD is lowered based on such a solid-liquid separation function, but the SS and COD are actually lowered along with the reduction.

  In the aeration tank 2, the solid precipitated in the lower part and the liquid integrated therewith are discharged to the outside or reduced to the storage tank 1 (however, it is fundamental to obtain purified water). If it suits the purpose, it is preferable to release it as much as possible.)

  When the BOD of the upper part of the object to be processed in the aeration tank 2 is equal to or less than a predetermined value, the upper part is moved to the sedimentation tank 3.

  In the settling tank 3, in a stationary state, further solid-liquid separation is performed by precipitating the portion with a large amount of solids downward and storing the portion with a small amount of solids upward with respect to the processing object. When the SS is less than or equal to a predetermined value, the upper portion is transferred to the filtration tank 4, but when SS is less than or equal to the predetermined value, BOD and COD are further reduced. It has become.

  Also in the sedimentation tank 3, a part with a large amount of solid precipitated downward is discharged to the outside or reduced again to the storage tank 1.

  In the filtration tank 4, microorganisms in the processing target are adsorbed by the filtering action by the molecular sieve particles 41, the porous particles or the fine powder 42, and the BOD is greatly reduced, and the processing target By adsorbing the organic substance therein, the COD can be lowered, and further, the remaining suspended substance can be adsorbed to significantly reduce the SS.

  In the filtration tank 4, when the BOD, COD, and SS of the filtered processing object are each equal to or less than predetermined values, the processing object can be processed as purified water.

  Due to the function of each series of tanks as described above, in the apparatus of the present invention, BOD, COD, and SS are supported for each tank from livestock manure that is a mixture of liquid and solid stored in the storage tank 1. Then, based on the reduction to a predetermined value or less, it is possible to obtain purified water based on criteria set as targets for BOD, COD, and SS.

  As described in (2) above, when a predetermined amount of natural water, groundwater, or tap water is injected into the aeration tank 2 and the injection amount is adjusted as necessary, BOD, COD, It is very convenient to set SS below the target value.

  In order to keep any or all of BOD, COD, SS set as targets in each tank below the predetermined value, always measure any or all of BOD, COD, SS in each tank In the stage where the value is less than or equal to the predetermined value, the object to be treated is transferred to the next tank and treated as purified water in the filtration tank 4, and conversely, any one of BOD, COD, and SS is the target When the value exceeds the value, in the aeration tank 2 and the sedimentation tank 3, the shift to the next tank is stopped, and in the filtration tank 4, the automatic control of repeating the filtration of the processing object is performed again. Various embodiments are also encompassed by the present invention.

  However, in the automatic control employed in the above embodiment, particularly in the filtration tank 4, when any of BOD, COD, and SS exceeds a predetermined value, the object to be treated is returned to the state before filtration. It must be complicated work.

  In consideration of such a situation, in the present invention, the ratio of the volume of the aeration tank / the volume of the settling tank is set to a predetermined value or less after setting the air circulation amount to be equal to or greater than a predetermined value. An embodiment in which the ratio of the volume of the filtration tank is set to be equal to or less than a predetermined value and the processing object is sequentially transferred without always measuring BOD, COD, and SS in each tank is preferable.

  When the preferred embodiment is applied to the embodiment (2), it is essential to set the injection amount of the natural water, the ground water, or the tap water to the aeration tank 2 to a predetermined value or more.

  In these preferred embodiments, the treatment in each tank, that is, the solid-liquid separation in the aeration tank 2 and the sedimentation tank 3, and the filtration in the filtration tank 4 are targeted for any or all of BOD, COD, and SS. In order to achieve this, it is essential that the amount of the processing object transferred to each tank is within the capacity range that can be processed in each tank.

  Therefore, in the said embodiment, it is good to set so that the measurement tank 6 may be provided between the storage tank 1 and the aeration tank 2, and the livestock manure by the said mixture more than the capacity | capacitance of each tank may not move to the aeration tank 2.

  Note that zeolite is suitable as the molecular sieve particles 41 in the filtration tank 4, and activated carbon is suitable as the porous particles or fine powder 42.

  Hereinafter, it demonstrates according to an Example.

In the examples, the aeration tank 2, with respect to the processing object 1 m ^3, to circulate air 65 m ³ / day, and with respect to the processing object 1 m ^3, natural water 400 L / day, or ground water, or After injecting tap water, in the aeration tank 2, the upper part where the BOD measured by JIS K 0102 is 1100 mg / L or less and the SS according to the standard of the Environment Agency Notification No. 59 of 1971 is 170 or less is precipitated. The JIS standard BOD is 1000 mg / L or less and the upper part of the standard SS is 140 or less is transferred to the filtration tank 4 in the sedimentation tank 3, and in the filtration tank 4, the JIS In order to realize that the COD according to the standard is 110 mg / L or less, the BOD is 0.5 mg / L or less, and the SS according to the standard is 68 mg / L or less. The volumes of / settler aeration tank was 3 or less, is characterized by the volume of the volume / filtration tank of the sedimentation tank is the volume ratio such that 3 or less.

  In the embodiment, it is possible to sequentially transfer the processing object without regular measurement and control based on the measurement, but the configuration of the embodiment and the design for realizing the configuration are as follows. It comes from experiments involving trial and error by the creator.

  The present invention is used not only to obtain purified water from manure by the mixture of liquid and solid stored in the barn, but also to store the exhausted solid in the middle of the process and use it as organic fertilizer It can be applied to such industrial fields.

It is a block diagram which shows the outline of the processing apparatus of this invention. In addition, P has shown the pump provided as needed in order to transfer a process target object to the next tank.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Storage tank 2 Aeration tank 21 Air circulation pipe 22 Injection pipe of natural water or ground water or tap water 3 Precipitation tank 4 Filtration tank 41 Molecular sieve particle 42 Porous particle or fine powder 6 Measurement tank

Claims (6)

  In a livestock manure purification treatment device that obtains purified water from a mixture of liquid and solid from manure that has flowed out of the barn into the storage tank, the object to be treated by the mixture is moved from the storage tank to the aeration tank and brought into contact with the circulating air. While stirring based on this, a part of the processing object is precipitated downward, the upper part where the BOD is not more than a predetermined value is transferred to the precipitation tank, and the part of the processing object is moved downward in the precipitation tank. And the upper part where SS is not more than a predetermined value is transferred to a filtration tank, and based on the filtration with molecular sieve particles and porous particles or fine powder in the filtration tank, BOD, COD, and An apparatus for purifying manure of livestock based on setting SS to a predetermined value or less and discharging a portion of the aeration tank and the sedimentation tank that have settled downward and remain in the tank to the outside.   Set the air circulation rate to a predetermined value or higher, set the ratio of the aeration tank volume / precipitation tank volume to a predetermined value or less, and set the ratio of the precipitation tank volume / filtration tank volume to a predetermined value or less. The livestock manure purification apparatus according to claim 1, wherein the processing object is sequentially transferred with respect to BOD, COD, and SS in each tank without performing continuous measurement and control based on the measurement.   The livestock excreta purification apparatus according to claim 1, wherein a predetermined amount or more of natural water, groundwater, or tap water is injected into the aeration tank per day.   Set the air circulation rate and the amount of natural water, groundwater, or tap water injected to a specified value or higher, and then set the ratio of aeration tank volume / precipitation tank volume to a predetermined value or less, and settling tank volume. / The ratio of the volume of the filtration tank is set to a predetermined value or less, and the processing object is sequentially shifted without BOD, COD, SS in each tank and control based on the measurement at all times. The livestock excreta purification apparatus according to claim 3. In the aeration tank, to the processing object 1 m ^3, to circulate air 65 m ³ / day, and with respect to the processing object 1 m ^3, natural water 400 L / day, or ground water, or after the tap water was injected In the aeration tank, the upper part where the BOD measured by JIS K 0102 is 1100 mg / L or less and the SS according to the standard of the Environmental Agency Notification No. 59 of 1971 is 170 or less is moved to the precipitation tank. The upper part of the JIS standard with a BOD of 1000 mg / L or less and the SS of the standard of 140 or less is transferred to a filtration tank, and the COD according to the JIS standard is 110 mg / L or less in the filtration tank. Is 0.5 mg / L or less, and in order to realize SS according to the above standard to be 68 mg / L or less, the volume of the aeration tank / the volume of the precipitation tank is Follows and, manure purifying apparatus of livestock according to claim 4, wherein the volume of the volume / filtration tank of the sedimentation tank is the volume ratio such that 3 or less. The livestock manure purification apparatus according to claim 1, wherein zeolite is used as the molecular sieve particles and activated carbon is used as the porous particles or fine powder.

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