JP2997295B2 - Water purification equipment for livestock facilities - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial applications]

TECHNICAL FIELD The present invention relates to a water purification device for livestock facilities that enables recycle use of sewage discharged from livestock facilities, particularly livestock facilities that can recycle water used in livestock facilities.

[Prior art]

2. Description of the Related Art Conventionally, a livestock barn for raising a large amount of livestock such as cattle and pigs has an inclined floor surface, and a gutter is provided on a lower side of the inclined surface, so that livestock manure and cleaning and drainage of the livestock ( Hereinafter, these will be referred to as sewage). Then, the sewage in the gutter is guided to a sewage purification device adjacent to the livestock barn for treatment. Usually, the purification device used here is biological treatment by an activated sludge method. Released after sterilization.

[Problems to be solved by the invention]

However, the above-mentioned conventional barn facilities have the drawback that a large amount of labor is required for cleaning the barn and a large amount of cost is required for treating wastewater discharged from the barn. That is, the sewage discharged from the barn is usually discharged after being subjected to biological treatment.
A large amount of dilution water is required, and the treated water is not circulated, so the water consumption increases, and the biological treatment apparatus performs a combination of anaerobic treatment and aerobic treatment. There was a drawback that it involved complicated processing steps and increased not only equipment costs but also operating costs. Therefore, the present invention has been made in order to solve the above-mentioned drawbacks, the object of which is to keep the stables without much effort, and low water consumption, Another object of the present invention is to provide a water purification device for livestock facilities that is suitable for efficiently purifying sewage discharged from livestock houses.

[Means for Solving the Problems]

In order to achieve the above object, the water purification device for livestock facilities according to the present invention is configured such that the floor surface of the livestock barn is divided into a water floor having a predetermined water level and a land floor which is maintained in a dry state. A water purification device for livestock facilities that supplies purified water to the bed again, and a biological purification means for biologically purifying sewage received from the stable.
Chemical purification means for chemically purifying the treated water of the biological purification means, wherein the biological purification means has a plurality of draft tubes which are assembled at the top and open at the bottom of the aerobic treatment tank. The casing that hangs down from the collection point of the tubes is kept at a predetermined interval vertically, and a pair of turbine blades is arranged on the same rotating shaft, and an aerator with an oxygen supply pipe opened at the collection point is provided. It is characterized by. Further, the number of blades of the pair of turbine blades is characterized in that the number of upper turbine blades is set larger than that of lower turbine blades. The draft tube on the turbine blade side below the pair of turbine blades is provided with a cone with a baffle.

[Action]

Livestock barns are divided into a waterbed with a predetermined water level and a landbed where the floor of the barn is kept dry, and livestock can drink water from the waterbed, and manure can be stored on the waterbed. Washed off by a stream of water. The sewage discharged from the barn is purified by the biological purification means and the chemical purification means and then sent to the water bed again for use. In the biological purification means, the sewage is biologically treated using activated sludge, and in the chemical purification means, the treated water of the biological purification means is purified using chemicals. In the aerator of the biological purification means, the sewage sucked by the draft tube is jetted and circulated by the turbine blade, and at the same time, oxygen is dissolved and the solid matter is crushed.

【Example】

Hereinafter, livestock facilities according to an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a flow sheet showing an overall configuration of a livestock barn facility according to an embodiment. Reference symbol a denotes a barn for breeding cattle, pigs, etc., which is shown in a plan view with a part of the roof 1 of the barn removed. b denotes a water purification device (hereinafter, referred to as a purification device). The floor 2 of the barn a is made of concrete as shown in the sectional view of FIG. The floor 2 has the highest height at the center in the width direction, and a passage 3 extending in the longitudinal direction of the barn is formed in that portion. Almost half of the floors 2 on both sides of the passage 3 on the side close to the passage 3 constitute land floors 4a and 4b having a downward slope, and the other half on the side far from the passage 3 is each land floor 4a. , 4b constitute horizontal water beds 5a, 5b one step lower than the ends 4a ', 4b'. Watering pipes 6a, 6b are located on the land floors 4a, 4b side of these water floors 5a, 5b.
And at least its land floor 4a, 4b
Side grooves 7a and 7b are provided on the opposite side. In the example shown in FIG. 1, the side grooves 7a and 7b are bent toward the longitudinal ends of the water floors 5a and 5b. Although not shown, weirs are provided at the outflow ends of these side grooves 7a and 7b, and the water level of these side grooves 7a and 7b is kept constant, and the water amount of a predetermined depth is always kept in the water beds 5a and 5b. Is configured to be held. In addition, in the figure, F is a fence provided for equalizing the density of livestock, so that the land floor and the water floors 4a, 5a, 4b, 5b exist in one section on both sides of the passage 3. The fence F forms a number of sections. As shown in the plan view of FIG. 3, the cleaning device b includes a sewage receiving tank 8, a first aerobic treatment tank 9, a second aerobic treatment tank 10, an intermediate sedimentation tank 11, and a third aerobic treatment tank 12, , A fourth aerobic treatment tank 13, a stirring and mixing tank 14, and a final sedimentation tank 15, and the sewage is configured to be treated by sequentially passing through these tanks. Each of these tanks 8 to 15 can be made of not only iron plate or concrete, but also each tank having a cylindrical shape such as FRP.
It can also be made in a synthetic resin tank such as Each of the aerobic treatment tanks 9, 10, 12, and 13 corresponds to the biological treatment means of the present invention, and the mixing and stirring tank 14 and the final sedimentation tank 15 correspond to chemical purification means. When the sewage from the side grooves 7a and 7b is received by the sewage pump (not shown) into the sewage receiving tank 8 via the sewage introduction pipe 16 (see FIG. 1), the sewage is removed by a screen 17 to remove contaminants. 1 The aerobic treatment tank 9 is introduced. This first
The aerobic treatment tank 9 and the other aerobic treatment tanks 10, 12, and 13 have the fourth
An aerator 20 as shown in the figure is installed. An example in which the aerator 20 is attached to the second aerobic treatment tank 10 will be described. The aerator 20 is opened near the bottom of the aerobic treatment tank, and a plurality of draft tubes 21 and 21 gathered at the top. , And a pair of turbine blades 24a and 24b which are rotated by a motor M in a vertical direction in a casing 23 which is suspended from a collecting portion 22 on the upper side. As shown in FIG. 1, an oxygen supply pipe 26 from an oxygen generator O having a built-in ozone generator is open in the collecting part 22. Therefore, the motor M rotates and the turbine blade
When the rotors 24a and 24b rotate at a high speed of, for example, 3600 rpm, the pressure in the casing 23 increases because the upper turbine blade 24a has more blades than the lower turbine blade 24b. Then, the sewage mixed with oxygen gas spouted at high speed from the turbine blade 24b violently collides with a cone 25 with a baffle provided integrally with a lower portion of the casing 23. Therefore, the oxygen gas is miniaturized to promote the dissolution of oxygen into the wastewater, and the solids in the wastewater are pulverized and miniaturized, thereby promoting the biological treatment. Further, by the rotation of the turbine blades 24a, 24b, a circulating flow as shown by an arrow in FIG. 4 is generated in the sewage in the aerobic treatment tank 10, and the mixture is uniformly mixed and stirred. Note that the gas supplied from the oxygen supply pipe 26 may be air, but an oxygen-enriched gas is preferable because the organism is activated. The intermediate settling tank 11 and the final settling tank 15 have the same structure. Here, a description will be given of the intermediate precipitation tank 11 shown in FIG. 4 as an example. In the middle settling tank 11, the upper end is located on the water surface in the center,
It has an inner cylinder 30 whose lower end is open in water, and a cone-shaped sludge concentrating section 31 is formed at the bottom of the tank. The concentrated sludge from the sludge thickening section 31 is discharged from a sludge pipe 32 having a sludge pump (not shown), and a part of the sludge is returned to the first aerobic treatment tank 9 as necessary. The excess sludge is disposed of by incineration or the like together with the residue on the screen 17 and the concentrated sludge in the final settling tank 15. The mixing and stirring tank 14 has stirring blades (not shown) that are driven to rotate by a motor, and a coagulant known as a water treatment agent is added. The coagulant to be added is naturally selected to be harmless to livestock, but a chemical treating agent (trademark "Miracle") containing various inorganic salts and the like separately proposed by the present applicant is suitable. . This miracle generates free active oxygen by the catalytic action of the transition metal ions of the contained multimineral ions, and activates the oxygen dissolved in water or insoluble substances in water or insoluble substances by the catalytic action of the multimineral ions. , Promotes oxidation reaction of organic substances, decomposes, precipitates, agglomerates, and multi-oxygen,
Sewage treatment can be performed by the mutual effect of the hydrolysis action. The mixing and stirring may be performed by gas stirring without using the stirring blade. In the mixing and stirring tank 14, the SS component in the treated water from the fourth aerobic treatment tank 13 is aggregated, sent to the final sedimentation tank 15, concentrated, and discharged. The supernatant water of the final sedimentation tank 15, that is, purified water is supplied to the above-mentioned sprinkling pipe via a purified water supply pipe 33 by a pump (not shown).
6a, 6b. Note that a supply water pipe 34 is connected to the purified water supply pipe 33 so that water lost by evaporation, that consumed by livestock, and that lost due to the sludge of the purification device are supplied. Is configured. That is, care is taken not to cause excessive concentration due to circulating use of water. According to the experiment of the present inventor, when the BOD of the sewage received in the sewage receiving tank 8 is 1000 ppm, the BOD of the purified water from the final sedimentation tank 15 can be treated up to 5 ppm, and the above-mentioned trademark Miracle chemical treating agent is used. In this case, it has been confirmed that the purified water contains no harmful bacteria to livestock and that the purified water contains an appropriate amount of a mineral component. Therefore, the water supplied from the watering pipes 6a, 6b to the water floors 5a, 5b can sufficiently withstand livestock drinking water. Also, due to the nature of livestock, manure is
a, 5b, so that the manure is flowed to the gutters 7a, 7b by the water flow supplied from the watering pipes 6a, 6b, from which it is guided to the purification device b via the sewage supply pipe 16 and purified. You. Therefore, the stable a is always kept clean without human intervention. In the livestock barn a, half of the floor surface is formed on the water floors 5a and 5b. Therefore, when the temperature is high, the water on the water floors 5a and 5b lowers the body temperature of the livestock to prevent the exhaustion of physical strength, and conversely. When the temperature is low, the inside of the livestock a is kept warm by the water temperature, so that it is possible to make the livestock excellent in habitability.

【The invention's effect】

The water purification device for livestock facilities according to the present invention has a biological purification means for biologically purifying sewage received from a livestock house, and a chemical purification means for chemically purifying treated water of the biological purification means, The biological purification means has a plurality of draft tubes which gather at the top and open at the bottom of the aerobic treatment tank, and maintain a predetermined interval vertically in a casing hanging down from the gathering point of the draft tubes, and rotate at the same time. Since a pair of turbine blades is arranged on the shaft and an aerator with an oxygen supply pipe opened at the gathering point is provided, it is possible to efficiently purify sewage from the barn. And since the purified water is recycled, the water consumption can be greatly reduced and the manure in the water bed can be treated at the same time, so that the barn is kept clean without human intervention. be able to. Furthermore, since the sewage is treated by the biological purification means and the chemical purification means, the purified water can be supplied to the drinking water of livestock. Moreover, in the aerator of the biological purification means, the sewage is vigorously squirted from the upper collecting point by the pair of turbine blades, so that the solids in the sewage are crushed and miniaturized, thereby promoting the biological treatment. Further, when the number of blades of the pair of turbine blades is set to be higher than that of the lower turbine blade, the pressure in the casing can be increased. Furthermore, when a cone with a baffle is provided on the draft tube on the turbine blade side below the pair of turbine blades, the sewage collides violently with the cone with the baffle, and oxygen gas becomes finer, thereby increasing the dissolution of oxygen into the sewage. be able to.

[Brief description of the drawings]

1 is a flowchart of a livestock barn facility according to one embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line II-II of FIG. 1, FIG. 3 is a plan view of a purification device, and FIG. FIG. 4 is a sectional view taken along line IV-IV. a …… pen, b …… purification equipment (water purification equipment), 4a, 4b… land floor, 5a, 5b… water floor, 9,10,12,13 …… first, second, third, Fourth aerobic treatment tank (biological purification means), 14 ... mixing and stirring tank (chemical purification means), 15 ... final sedimentation tank (chemical purification means).

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) A01K 1/01 C02F 3/16 C02F 3/12

Claims (3)

(57) [Claims] 1. The floor of a barn is divided into a water bed having a predetermined water level and a land floor maintained in a dry state, and receives and purifies sewage from the water bed, and purifies the purified water again. A water purification device for livestock facilities supplied to a floor, comprising: biological purification means for biologically purifying sewage received from the animal stable; and chemical purification means for chemically purifying treated water of the biological purification means. The biological purification means has a plurality of draft tubes that are assembled at the top and open at the bottom of the aerobic treatment tank, and maintain a predetermined interval vertically in a casing that hangs down from an assembly point of the draft tubes, and A water purification apparatus for livestock facilities, comprising a pair of turbine blades arranged on the same rotating shaft, and an aerator having an oxygen supply pipe opened at the gathering point. 2. The water purification apparatus for livestock facilities according to claim 1, wherein the number of blades of said pair of turbine blades is set to be greater for upper turbine blades than for lower turbine blades. 3. The water purification apparatus for livestock facilities according to claim 1, wherein a baffle-equipped cone is provided in the draft tube on the turbine blade side below the pair of turbine blades.