JP2002101777A - Treatment system for livestock excreta - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a treatment system intended to utilize as a fertilizer or feed the liquid component (urine) of livestock excreta and capable of inexpensively discharging the remaining liquid in a condition meeting the regulated effluent standard as well. SOLUTION: This system works as follows: the liquid component (urine) 11 of livestock excreta 10 is separated from the solid component (dung) 12 and reserved in a storage tank 1, which is then injected with strongly acidic water 20 to neutralize the liquid component 11, the resulting liquid component 11 is sent to a conditioning tank 2, to which a coagulative precipitant 21 is added, followed by agitation, and the solute in the liquid component 11 is separated as coagulated precipitate 13 from the liquid 14, and the resulting liquid 14 in the conditioning tank 2 is discharged, a water adsorbent 22 is then added to the coagulated precipitate 13 followed by agitation to make a powdery form, which is utilized as a fertilizer or feed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a livestock excrement processing system which can process livestock excrement and use it as fertilizer or feed.

[0002]

2. Description of the Related Art In recent years, livestock excrement has become a serious environmental problem as industrial waste in the livestock industry. In particular, solid components (feces) of excrement are used as fertilizers and feeds, but liquid components (urine) are purified by a so-called activated sludge method using microorganisms and then discharged. is there.

[0003]

However, in the conventional method for treating a liquid component by the activated sludge method, it is difficult to satisfy a specified drainage standard, which causes environmental pollution and increases the processing cost. It has become something.

Accordingly, it is an object of the present invention to use liquid components (urine) of livestock excreta effectively as fertilizers and feeds, and the remaining liquids meet the prescribed drainage standards at low cost. It is an object of the present invention to provide a treatment system capable of draining water in a state.

[0005]

To achieve the above object, a livestock excrement disposal system according to claim 1 of the present invention comprises a liquid component such as urine in livestock excrement (10). (11) is separated from the solid component (12) such as feces, and the separated liquid component (11) is stored in the storage tank (1), and then the strongly acidic water (20) is injected into the storage tank (1). To neutralize the liquid component (11), send the neutralized liquid component (11) to the adjusting tank (2), and set the coagulating precipitant (21) in the adjusting tank (2).
And stirred to separate the solute in the liquid component (11) from the liquid (14) as a coagulated sediment (13), and after discharging the liquid (14) in the adjusting tank (2), the coagulated sediment ( 1
It is characterized in that a water adsorbent (22) is added to 3) and stirred to make a powder form, which is used as fertilizer or feed.
Here, the liquid component (11) includes not only a case where urine is completely contained, but also a case where feces and the like are mixed into a liquid.

In addition, the livestock excrement disposal system according to a second aspect of the present invention comprises mixing the sawdust (23) with the liquid (14) discharged from the regulating tank (2), stirring and fermenting the mixture, and then fertilizing or feeding. It is characterized by being used as.

Further, a livestock excrement disposal system according to claim 3 is characterized in that the coagulating sedimentation agent (21) is composed of natural stone extraction water and quick lime.

[0008] A livestock excrement disposal system according to claim 4 is characterized in that the coagulating sedimentation agent (21) is composed of natural stone extraction water and slaked lime.

Symbols in parentheses indicate corresponding elements or matters described in the drawings and the embodiments of the invention described later.

According to the livestock excrement disposal system of the present invention, not only solid components but also liquid components can be effectively used as fertilizer and feed. In addition, since only the liquid is discharged after separating solutes such as fertilizers from the liquid component, the specified drainage standard can be satisfied at low cost.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect of the present invention, a liquid satisfying a specified drainage standard is fermented and used as fertilizer or feed. The liquid component can be used more effectively.

Further, according to the third aspect of the present invention,
In addition to the functions and effects of the invention according to claim 1 or 2, the coagulating and precipitating agent is composed of natural stone extracted water having an action of coagulating and precipitating the solute and quicklime which acts to suppress the solute from floating. The effect can be further enhanced.

According to the fourth aspect of the present invention, in addition to the function and effect of the first or second aspect of the present invention, the coagulating sedimentation agent and the natural stone extraction water having the function of coagulating and precipitating the solute can be used. Since it is made of slaked lime which works to suppress floating, the effect of coagulation and sedimentation can be further enhanced.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A livestock excrement disposal system according to an embodiment of the present invention will be described with reference to FIG.
FIG. 1 is an explanatory diagram showing the processing system.

The livestock excrement disposal system according to the embodiment of the present invention first separates a liquid component 11 such as urine from a livestock excrement 10 from a solid component 12 such as feces. Next, the separated liquid component 11 is sent to and stored in the storage tank 1 by the pump 5, and then the strongly acidic water 20 is injected into the storage tank 1 to neutralize the alkaline liquid component 11.

Subsequently, the neutralized liquid component 11 is supplied to the pump 5
Then, the coagulating sedimentation agent 21 is added to the adjusting tank 2 having a funnel-shaped bottom, and the stirring is performed by driving the stirrer 6 with the motor 7 in the adjusting tank 2. Separated from 14. The coagulating sedimentation agent 21 can be composed of natural stone extraction water and quick lime. Natural stone extraction water has the effect of coagulating and precipitating solutes, and quicklime serves to suppress the solutes from floating and enhance the sedimentation effect. As the natural stone extraction water, “Kankyo Floc” (trade name) containing sodium alginate as a main component and having no environmental pollution can be used.

Next, after the supernatant liquid 14 is discharged from the adjusting tank 2, the water adsorbent 22 is added to the solidified precipitate 13 in the adjusting tank 2 and the mixture is stirred to form a powder. 15 is used as fertilizer and feed. This moisture adsorbent 22
For example, "Hakobere" (trade name), which is a neutral treatment agent and has no toxicity and does not cause environmental pollution, can be used.

The solid component 12 is separated from the liquid component 11 and then left as it is or in the fermenter 4 for sawdust 2.
3, and fermented by stirring, and used as fertilizer and feed.

In the livestock excrement disposal system according to the present embodiment, by performing the above-described treatment, not only the solid component 12 but also the liquid component 11 can be effectively used as a fertilizer or feed. Further, after separating solutes such as fertilizers from the liquid component 11, only the liquid 14 is discharged, so that the specified drainage standard can be satisfied at low cost,
Does not pollute the environment.

In the present embodiment, the liquid 14 discharged from the adjusting tank 2 is mixed with the sawdust 23 in the stirring tank 3, stirred and fermented, and then used as fertilizer and feed. Therefore, the liquid component 11 can be used more effectively.

In the present embodiment, the coagulating and precipitating agent 21 is composed of natural lime extracted water and quick lime, but slaked lime generated by adding water to quick lime instead of quick lime is used.
The coagulating sedimentation agent 21 may be composed of natural stone extraction water and slaked lime.

[0022]

As described above, according to the animal excrement disposal system of the present invention, not only solid components but also liquid components of animal excrements can be effectively used as fertilizers and feeds. In addition, since only the liquid is discharged after separating solutes such as fertilizer from the liquid component, the specified drainage standard can be satisfied at low cost. Thereby, environmental problems can be improved.

According to the second aspect of the present invention, in addition to the function and effect of the first aspect of the present invention, a liquid satisfying a specified drainage standard is fermented and used as fertilizer or feed. The liquid component can be used more effectively.

According to the third and fourth aspects of the present invention, in addition to the effects of the first and second aspects of the present invention, the coagulating and precipitating agent is provided with natural stone extracted water having an action of coagulating and precipitating a solute. Since it is composed of quicklime or slaked lime which works to suppress the solute from floating, the effect of coagulation and sedimentation can be further enhanced.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram showing a livestock excrement processing system according to an embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Storage tank 2 Adjusting tank 3 Stirring tank 4 Fermenter tank 5 Pump 6 Stirrer 7 Motor 10 Livestock excrement 11 Liquid component 12 Solid component 13 Coagulated sediment 14 Liquid 15 Powdery substance 20 Strongly acidic water 21 Coagulating sedimentation agent 22 Moisture adsorbent 23 Sawdust

──────────────────────────────────────────────────の Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) C02F 1/52 C02F 1/52 K 4H061 11/00 ZAB 11/00 ZABC 11/14 11/14 Z C05F 3 / 00 C05F 3/00 C05G 3/00 C05G 3/00 Z 101 101 (72) Inventor ▲ Takano Yasuo 2879-2 Shimotomo Ueno City, Mie Prefecture 3 (72) Inventor Muneo Shimada Iwakuni City Vehicle, Yamaguchi Prefecture 1-chome 4-19 F-term (reference) 2B101 AA01 CB01 CB03 CB07 2B150 AB20 AD01 BA05 BB01 CA32 CH02 4D015 BA03 BA12 BA19 BB13 CA03 DA23 DA24 DA31 DB31 EA14 EA32 4D059 AA01 BK17 CC01 CC02 DA70 DB40 BA03BA3 DA24 DA31 DB31 EA14 EA32 4H061 AA02 CC36 CC47 DD02 DD20 EE12 EE64 EE66 EE70 FF07 GG14 GG29 GG43 GG54 GG70

Claims (4)

[Claims] 1. A liquid component of livestock excrement is separated from a solid component, the separated liquid component is stored in a storage tank, and then the strongly acidic water is injected into the storage tank to neutralize the liquid component. Then, the neutralized liquid component was sent to the adjustment tank, a coagulating sedimentation agent was added to the adjusting tank, and the mixture was stirred to separate the solute in the liquid component from the liquid as a solidified precipitate, and the liquid in the adjusting tank was discharged. A system for treating livestock excrement, characterized in that a water adsorbent is added to the coagulated sediment and then stirred to form a powder, which is used as fertilizer or feed. 2. The livestock excrement disposal system according to claim 1, wherein the liquid discharged from the adjusting tank is mixed with sawdust, stirred, fermented, and then used as fertilizer or feed. . 3. The livestock excrement disposal system according to claim 1, wherein said coagulating sedimentation agent is composed of natural stone extraction water and quick lime. 4. The livestock excrement disposal system according to claim 1, wherein said coagulating and precipitating agent is composed of natural stone extraction water and slaked lime.