JP2003334575A - Device for cleaning water of pond, and the like, and water cleaning method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a device for cleaning the water of a river, a pond, and the like, which positively utilizes the most of a natural water cleaning system and thereby prevents the soiling of water and its malodor from occurring for a long time and thus maintains the control of water in the pond, and the like, at a low cost. <P>SOLUTION: The device comprises an aeration water current forming means A which forms an aeration water current W almost horizontally in the water by charging an air-containing water current from the pump discharge pipe 2 of a submersible pump 1 installed in the pond water and a water cleaning means B which induces the water cleaning by arranging nearby a perforated container 4 for cleaning which stores a large number of porous materials S so as to soak them in the pond water, on the downstream far end side of the aeration water current W formed by the means A and aerating the water by the help of the porous materials S. Thus, the pond water is stirred so that oxygen is supplied to the pond K and the whole water is not stagnant to help clean the water. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification device for pond water, lake water, river water and the like, and a water purification method for water purification using the device.

[0002]

2. Description of the Related Art In a pond provided in a park, a zoo, a botanical garden, an amusement park, a golf course, etc. Water is polluted by excreted secretions and foods of fish, birds, animals, etc., oxygen in the water is insufficient, and there is a possibility that water-bloom and various pathogens may occur, which may adversely affect the health of fish and habitats. Therefore, as a method for purifying pond water (including lake water, river water, etc.), an aeration method in which an air supply pipe is arranged in the pond water and aerate the pond water is attempted. That is, air is supplied to the pond water by a pump (aeration), oxygen in the air activates the microorganisms inhabiting the pond water, and the microorganisms decompose organic substances as pollutants. Since aerobic microorganisms take in oxygen and oxidize and decompose organic matter to obtain energy, when oxygen is supplied, its activity is further activated and water purification of pond water is further promoted.

As a method for supplying oxygen to further activate the activity of microorganisms, for example, Japanese Patent Laid-Open No. 2000-42592 discloses a clean water system and its structure by means of a water flow generating means, and Japanese Patent Laid-Open No. 11- 10
Japanese Patent No. 4678 discloses a water purification method for suspending a porous material in water and an apparatus for carrying out the method. Further, Japanese Patent Laid-Open No. 2001-300276 discloses a bubble generating device that mixes the atmosphere with the water discharged from a pump. Even with these methods and devices, considerable water purification and water quality improvements have been achieved, but further improvements in facility structure, economy, etc. are required.

[0004]

Therefore, the present applicant has an object to provide a water purification apparatus having a simple structure, which effectively utilizes the aeration method, from a water purification system existing in the natural world such as a sea or a river. What we learned is that when the water stagnates, the supply of oxygen is reduced and the water becomes dirty, so it constantly moves the water and tries to prevent the water from becoming dirty. PROBLEM TO BE SOLVED: To provide an apparatus and method for purifying water such as pond water, which can promote the activation of water, prevent water from becoming dirty and odor over a long period of time, and manage and maintain ponds at low cost. The purpose is to

[0005]

In order to achieve this object, the present invention mainly purifies water by the following means. (1) In a case where pressurized water containing air is discharged from a pump discharge pipe to generate a substantially horizontal aeration water flow in water, a large number of porous substances can be immersed in water on the downstream side of the downward direction of the aeration water flow. It is characterized in that a perforated container for purification that has been housed is arranged. In this device, aeration water flow is generated in pond water, which tends to stagnant water, and at the same time, microorganisms that inhabit a large number of porous substances and decompose organic substances in water are activated to promote purification of water quality. (2) The pump is a submersible pump, and an air introduction pipe is connected in the middle of the pump discharge pipe located in the water to introduce air at a negative pressure of the water flow discharged from the pump to generate a substantially horizontal aeration water flow into the water. It is characterized in that it is generated. With this device, aeration with a simple and inexpensive structure can be obtained, and the activation of microorganisms is promoted to decompose organic substances in water.

(3) The purification perforated container is characterized in that it is constructed in the form of a pedestal having a space portion through which a lower part is opened and a water flow can pass. With this device, aeration with a simple and inexpensive structure is obtained, and water flow to the microbial porous material is promoted, which accelerates the activation of microorganisms to decompose organic matter in the water and also to circulate water in the pond. Induce and promote purification of water quality. (4) It is characterized in that the purification perforation container is suspended in water or submerged in water. With this device, the structure is simple and inexpensive, and the activation of microorganisms is promoted by aeration to decompose organic substances in water. (5) The porous material is a porous fired body containing clay and natural ore, and is characterized by using granular or peach-shaped chip-shaped or block-shaped bodies. This makes it possible to provide a habitat for microorganisms that is easy to handle, such as installation and replacement, and because it is about the size of a peach species, there is no resistance to the flow of water and air bubbles between each porous substance. It can be used evenly, and the activation of microorganisms can be done well. (6) The porous material is characterized in that a porous fired body containing clay and natural ore contains one or more of thermophilic bacteria and vegetable charcoal having water purification / improvement ability.
This additional configuration promotes good water purification. (7) The discharge pipe connected to the discharge port of the submersible pump is formed in the shape of an elbow consisting of a vertical pipe part and a horizontal pipe part, and the vertical pipe part connected to the discharge port is brought close to the side of the submersible pump. Vertically arranged, the upper elbow portion forms a lateral pipe in the lateral direction, and an air introduction pipe is connected in the middle of the lateral pipe to introduce air by a negative pressure of the water flow discharged from the submersible pump. It is characterized by generating a substantially horizontal aeration water flow into the water. With this device, a submersible pump can be effectively used to realize a compact aeration device and effectively purify water.

(8) Aeration water flow generating means for generating air in the water in a substantially horizontal direction by mixing air in the middle of the pump discharge pipe, and a porous material on the downstream side of the aeration water flow generation means. A water purification device having a water purification device for arranging a perforated container for purification that is soaked in the water in close proximity to aerate a porous material to cause water purification, and arrange a single water purification device in the pond water or a plurality of water purification devices at various places in the pond water. However, it is characterized by inducing a substantially horizontal water flow in the pond water to purify the pond water. By this method, the aeration water flow can be circulated in the pond water, and the water quality can be effectively purified. (9) An aeration water flow generation means and a water quality purification means are used as the water quality purification device. The unitized device by this method can be easily arranged at any desired position in the pond, and the aeration water flow is circulated in the pond water to purify the water quality. (10) Spring water of pond water, water outlet of circulating water, waterfall mouth, running water channel,
It is characterized in that a large number of porous materials are arranged at any one or a plurality of locations such as the circulating water outlet of the pond water. By this method, by arranging a large number of porous substances that become habitat of microorganisms in a flowing water environment, water flow to the porous substances is promoted, the purification power is improved, and more effective water purification is performed. .

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. 1 to 4 show an embodiment of the water purification device of the present invention. This water purification device is installed in the pond water M of the pond K, and mixes air in the middle of the pump discharge pipe 2 of the submersible pump 1 to generate a substantially horizontal aeration water flow W into the water. The production means A and the purification perforated container 4 accommodating a large number of porous materials S so that they can be immersed in the pond water are disposed close to each other on the lower side in the downflow direction of the aeration water flow W generated by the aeration water flow generation means A. A water purification means B for aerating S to cause water purification.

First, an embodiment of the aeration water flow generating means A will be described. The submersible pump 1 is composed of a pump body 1a having an electric motor incorporated therein, a water intake port 1b and a discharge port 1c, and a discharge pipe 2 is connected to the discharge port 1c. The discharge pipe 2
Is formed in an L-shaped elbow shape composed of a vertically oriented pipe portion 2a and a horizontally oriented pipe portion 2b, and the vertically oriented pipe portion 2a connected to the discharge port 1c approaches the side of the pump body 1a in the vertical direction. The upper elbow portion is provided to form a laterally-oriented pipe portion 2b in the lateral direction, and an air introduction pipe 2c is connected in the middle of the laterally-oriented pipe portion 2b. As shown in FIG. 3, at the inlet of the air introducing pipe 2c arranged at a predetermined height above the water surface T, a silencer for eliminating the intake sound (whistle) of the introduced air while enabling air introduction. A butterfly valve 2e equipped with 2d, capable of sucking / stopping the introduced air and changing the suction amount in the middle of the air introducing pipe 2c.
Is provided. The inside of the lateral pipe portion 2b has a discharge water flow path 2f through which the water flow discharged from the pump flows.
And a gas flow path 2g through which the atmosphere is introduced, and the air is introduced from the gas flow path 2g by the negative pressure of the water flow discharged from the discharge water flow path 2f and the mixing flow path 2h. By mixing air with the discharge water, an aeration water flow W in a substantially horizontal direction is generated in the water M and jetted from the tip of the lateral pipe portion 2b.

Reference numeral 3 indicates a mesh filter, which is installed at the bottom N of the pond and is composed of a box-shaped tray surrounding the bottom of the submersible pump 1 and its surroundings, by a chain line, and pebbles and litter in the pond are contained in the submersible pump 1. A good water absorbing action is achieved by preventing the water absorbing port 1b from being sucked or attached. Further, instead of the mesh filter 3, stones having a size larger than the water intake 1b may be piled up around the water intake 1b of the submersible pump 1 to fix the submersible pump 1 and protect the water intake 1b. Further, in the present embodiment, the submersible pump 1 is adapted to be supplied with electricity from outside the pond water by a cord (not shown). In the present embodiment, the submersible pump 3 is arranged at the bottom N of the pond, but the present invention is not limited to this, and may be attached to the peripheral wall of the pond, for example. Further, in the present embodiment, the submersible pump 1 is taken as an example of the pump, but the present invention is not limited to this,
As shown in FIG. 10 and described later, the pump may be arranged outside the water.

Next, the water purification means B will be described.
On the lower side of the aeration water flow W generated by the aeration water flow generation means A, a purification perforated container 4 containing a large number of porous substances S so that it can be immersed in pond water is placed on a pedestal 5 with legs and arranged in close proximity thereto. Has been done. The purification perforated container 4 is composed of a mesh container having a large number of perforations, and the aerated water flow W
The water flow and the bubbles H are configured so as to flow from the bottom of the perforated container 4 through the gaps of a large number of porous materials S to the side and upward of the side. Then, in some cases, a lid member 4a indicated by a chain line is provided on the upper side of the perforated container 4 in order to prevent damage such as birds poking the porous material S with their beaks.
(A fine hole may be provided to the extent that the bird's claws are not caught.) May be detachably provided to cover the porous material S. The purifying perforated container 4 is mounted on a legged pedestal 5 having four legs 5a and a space 5b through which the aeration water flow W can pass, with its bottom exposed downward. Since the aeration water flow W is configured to be able to pass downward in the downward direction of the bottom of the perforated container 4, most of the aeration water flow W smoothly flows downward and causes a gentle flow in the pond water. , A part of the aerated water flow W and bubbles H levitate upward from the bottom of the perforated container 4,
The microorganisms in the large number of porous materials S housed in the perforated container 4 are activated. Further, since the porous material S is stored in the perforated container 4, it is not covered with mud or dust,
Therefore, the purification power can be fully exerted.

The porous material S is a porous fired body containing clay and natural ore (for example, a porous fired body exemplified in Japanese Patent Application No. 2000-373754, filed by the applicant of the present invention).
And a small egg-like or peach-like granular or peach-like chip-like or block-like thing is used. As a result, the porous fired body constituting the porous material S has an environment in which microorganisms having a water purification / improving ability can easily inhabit, and because of the peach type aspect, the porous surface area per fixed volume is wide. In addition to the above, a gap is secured between each adjacent porous material S, and even if a large number of porous materials S are put in the purification perforation container 4, the water flow of the aeration water flow W and the bubbles H flow. Make it easy. Therefore, it is possible to activate the activity of the microorganisms inhabiting the porous material S and exert a great purification power by the microorganisms to oxidize and decompose the organic matter which is a pollutant in the pond water to promote water purification. Further, since the porous material S is in the shape of a grain or a chip or a block having a size of about pink, it is possible to easily perform the replacement work of the porous material S and the like. In order to further improve the purification ability of the porous material S, a thermophilic bacterium having water purification / improvement ability in advance in the porous fired body (for example, according to the application of the present applicant,
One or a plurality of porous composite materials exemplified in Japanese Patent Application No. 2002-13454) and plant charcoal such as charcoal and bamboo charcoal may be contained. Further, the porous material S is
Instead of the porous fired body containing clay and natural ore, other porous materials that have the ability to purify and improve water quality, such as charcoal (ordinary charcoal obtained by carbonizing wood) and lightweight aggregate, may be used. is there.

The embodiments shown in FIGS. 5 to 7 show a method for purifying and purifying water such as pond water utilizing a water purifying device comprising the aerated water flow generating means A and the water purifying means B.
First, the one shown in FIG. 5 is a single (one) water purification device having the aeration water flow generation means A and the water quality purification means B installed in the pond water M of the pond K, and the operation of the aeration water flow generation means A is performed. When the water flow and bubbles of the generated aeration water flow W act on the water purification means B, the pond water M circulates as shown by an arrow to the water intake port 1b of the submersible pump 1 of the aeration water flow generation means A. Due to the negative pressure generated, water is absorbed by the water inlet 1b.
The water in water is moved so that the water drawn from the submersible pump 1 is directed toward the water intake port 1b. In this way, by moving the water, it is possible to gently circulate in a running water locus having a diameter of about 10 meters to generate a flow. A large number of porous materials S having water purification / improving ability are laid at a plurality of locations such as the circulating water outlet 6, circulating water passage 7, circulating water outlet 8, etc., and the pond water is circulated by a pump 9. The water falling from the water outlet 6 is mixed with the air. Therefore, the pond water is promoted to be purified while being circulated in the pond by the water purification device of the present invention, and is also promoted to be purified in the middle of the circulation route by the pump 9, so that the synergistic action of the two promotes more efficient water quality. Purification can be achieved. Therefore, it is possible to prevent water stains and bad odors for a long period of time, a pump with a large horsepower is not required, and management and maintenance can be performed at low cost.

Next, as shown in FIG. 6, a plurality of (three) water purification devices comprising aeration water flow generation means A and water purification means B are installed in the pond water M of the pond K. Scenic stones R that are installed in various places in the pond to improve the landscape
It is aesthetically pleasing to place it in the shade of rocks. Also in this case, the flow of pond water is taken over by each water quality purification device as in the relay relay or relay competition system as shown by the arrow, and it is possible to gently circulate and generate a flow in a large arc running water trajectory. A large number of porous materials S having water purification / improvement ability are laid at a plurality of locations such as the circulating water outlet 6, the flowing water passage 7, the spring 10, the waterfall 11, the circulating water outlet 8 and the like. Is circulated by the pump 9 and is mixed with air by the water falling from the water port 6. Therefore, the pond water M is promoted by the plurality of water purification devices while being purified in the pond, and is also purified in the circulation route by the pump 9 and in the spring running water. More efficient water purification can be achieved. Two or four or more water purification devices in the pond can be arbitrarily installed depending on the condition and size of the pond K, and these water purification devices are easy to move and install. It is possible to easily select and install a location that is effective for water flow generation and water purification, and to achieve more efficient water purification.

(Experimental example) The present inventor, in an appreciation pond of a park in Shimane prefecture, has an aeration water flow generating means A in the form shown in FIG. 6 in order to prevent the deterioration of the water quality and the landscape of the water system due to the annual generation of water-bloom. When two water purification devices each including the water purification means B were installed and tested, the following phenomenon was confirmed. In other words, algal blooms were initially seen all over the viewing pond, but the number of algal blooms gradually diminished, and some algal blooms adhered to the cobblestones at the bottom of the pond where the water flow could not be fully rotated and the water tended to stagnant. As a result, a water flow is generated in the pond water by the water purification device including the aeration water flow generation means A and the water purification means B, so that it is possible to maintain a relatively clean and clear pond water environment as a whole without the generation of water-bloom. Was confirmed.
And good habitation of carp, medaka, haya, shrimp, snail, kawaina, water strider, tadpole, etc. could be confirmed.

Further, FIG. 7 shows an aeration water flow generating means A at a plurality of locations on a pond K in the shape of a river in a plan view 8.
A plurality (six) of water purification devices each consisting of the water purification means B and the water purification means B are installed. In this case, the pond water M is installed so that it flows in a divergence, a confluence, a confluence, or a confluence from the upstream side to the downstream side. Has been done. As a result, the flow is taken over by each water purification device as in the relay relay game system or relay game system, and a gentle flow without stagnation can be smoothly generated as shown by the arrow. Then, the water quality is purified at a plurality of locations such as the circulating water outlet 6, the flowing water passage 7, and the circulating water outlet 8.
A large number of porous materials S having an improvement ability are laid and arranged, and the pond water is circulated by a pump 9 and is mixed with air by the water falling from the water port 6. Therefore, pond water M
Is promoted in the course of being flushed by a plurality of water purification devices arranged at various places, and is also promoted in the middle of the circulation route by the pump 9 to purify water more effectively by the synergistic action of these. be able to.

FIG. 8 shows another embodiment, in which a purifying container for accommodating the porous material S is formed by the net body 10,
The net 10 is provided with a float or float 11 and positioning locking ropes 12 such as chains and ropes, whereby the aeration water flow of a water purification device comprising aeration water flow generation means A and water purification means B is provided. The net body 10 containing the porous material S is allowed to float on the water surface T of the pond water on the lower side of the flow direction of W, and most of the aeration water flow W is caused to flow on the lower side to cause a gentle flow to the pond water and aeration. A part of the water flow W and the bubbles H float upward from the bottom portion of the net body 10 and activate the microorganisms in the large number of porous materials S accommodated in the net body 10 to promote water purification.

FIG. 9 shows still another embodiment, in which a purifying container for accommodating the porous material S is formed by a net bag 20, and the net bag 20 is laid on the pond bottom N in a diving state. As a result, the net bag 20 containing the porous material S is submerged in the water on the lower side in the downward direction of the aeration water flow W of the water purification device including the aeration water flow generation means A and the water quality purification means B, and the aeration water flow W is increased. A part of the aeration water flow W containing air bubbles H is generated in the net bag 2 while a part of the aeration water flow W is caused to flow toward the lower side to cause a gentle flow in the pond water.
A large number of porous materials S which have passed through 0 and are accommodated in the net bag 20.
Activates microbes inside to promote water purification.

FIG. 10 shows another embodiment of the aeration water flow generation means, in which an air introduction pipe 31 is provided on the suction port side of the water flow discharge pump 30 to generate the aeration water flow W.
The water flow discharge pump 30 in this case is, for example, JP 2001
If a pressurizing centrifugal pump as shown in 159398 is used, the aeration water flow W can be generated with less risk of cavitation due to air suction. In addition,
The present invention is not limited to the above embodiment,
Various modifications are possible. For example, in the above-described embodiment, the pond is described as an example of the water purification target, but the present invention is not limited to this, and the present invention can also be used for purifying rivers, swamps, lakes, and the like.

[0020]

According to the present invention described above, the following effects can be obtained. According to the inventions of claim 1, claim 2, claim 3, claim 5, claim 6, and claim 7, the porous material has a structure of a water purification device including aeration water flow generation means and water purification means. Microbes can be inhabited in and can exert effective purification power. Since the natural power of the purification system in the natural world is used with such a simple structure, it is possible to prevent dirt and bad odors of water in ponds, pools, water tanks, etc. for a long period of time, and to maintain and maintain at low cost. It is possible to provide a device capable of

According to the third aspect of the invention, the water purification is carried out with the water purification means having a simpler structure.

According to the eighth, ninth and tenth aspects of the present invention, an efficient water purification method is achieved by the synergistic effect of the arrangement of the water purification device and the arrangement of the porous material laid at each of the water outlets. Is destroyed.

[Brief description of drawings]

FIG. 1 is a schematic side view of a water purification device according to a first embodiment.

FIG. 2 is a schematic perspective view of FIG.

FIG. 3 is a sectional view of an essential part of an air introduction pipe.

4 is an explanatory view of the operation of installing the device of FIG. 1 in a viewing pond.

FIG. 5 is a plan view of an appreciation pond in which the water purification method of the first embodiment is installed.

FIG. 6 is a plan view of a viewing pond in which the water purification method of the second embodiment is installed.

FIG. 7 is a plan view of a viewing pond in which the water purification method of the third embodiment is installed.

FIG. 8 is a schematic explanatory diagram of a floating example of a water purification device according to another example.

FIG. 9 is a schematic explanatory view of an example of diving in a water purification device according to another example.

FIG. 10 is a schematic explanatory view of aeration water flow generation means according to another example.

[Explanation of symbols]

1 submersible pump 2 pump discharge pipe 3 mesh filter 4 Perforated container for purification 5 mounts A Aeration water flow generation means W aeration water flow H bubbles B Water purification means S porous material

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Claims (10)

[Claims] 1. A method for generating pressurized water containing air from a pump discharge pipe to generate an aeration water flow in a substantially horizontal direction in water, wherein a large number of porous substances are immersed in water on the downstream side of the downflow direction of the aeration water flow. A water purification device for pond water or the like, in which a perforated container for purification that has been accommodated as possible is arranged. 2. A submersible pump as a pump, and an air introduction pipe is connected to the middle of a pump discharge pipe located in water to introduce air at a negative pressure of a water flow discharged from the pump to aerate substantially horizontally in water. The water purification device for pond water or the like according to claim 1, wherein a water flow is generated. 3. The water purification apparatus for pond water or the like according to claim 1 or 2, wherein the purification perforated container is configured in the form of a cradle having a space portion through which a water flow can pass. 4. The water purification apparatus for pond water or the like according to claim 1, wherein the purification perforation container is suspended in water or submerged in water. 5. The porous material is a porous fired body containing clay and natural ore, and a granular or peach-shaped chip-shaped or block-shaped one is used. Item 1. The water purification device according to item 1, 2, 3, or 4. 6. The porous material comprises, as the porous material, one or more of thermophilic bacteria and vegetable charcoal having a water purification / improving ability in a porous fired body containing clay and natural ore. 5. The water purification device according to 5. 7. A submerged pump discharge pipe connected to a discharge port is formed into an elbow shape consisting of a vertical pipe portion and a horizontal pipe portion, and the vertical pipe portion connected to the discharge port is provided on a side of the submersible pump. They are arranged close to each other in the longitudinal direction, and the upper elbow portion forms a laterally-oriented pipe portion, and an air introduction pipe is connected in the middle of the laterally-oriented pipe portion to supply air with negative water flow pressure discharged from the submersible pump. The water purification device for pond water or the like according to claim 1, which is introduced to generate a substantially horizontal aeration water flow. 8. An aeration water flow generating means for generating a substantially horizontal aeration water flow by mixing air in the middle of a pump discharge pipe, and a porous material to water on the downstream side of the aeration water flow generation means. A water purification device having a water purification device that disposes a perforated container for purification that is placed in close proximity to aerate a porous material to cause water purification, and arranges a single water purification device in pond water or a plurality of water purification devices at various locations in the pond water. , A method for purifying water such as pond water, which comprises purifying the pond water by inducing a substantially horizontal water flow in the pond water. 9. A method for purifying water such as pond water according to claim 8, wherein the aeration water flow generating means and the water purifying means according to any one of claims 1 to 7 are used as a water purifying apparatus. 10. Spring water of pond water, water mouth of circulating water, waterfall mouth,
The method for purifying water of pond water or the like according to claim 8 or 9, wherein a large number of porous substances are arranged at any one or a plurality of locations such as a running water channel, a circulating water outlet of the pond water, or the like.