JP2001062478A - Water cleaning unit for lake or the like and water quality cleaning facility for lake or the like - Google Patents

Abstract

PROBLEM TO BE SOLVED: To structure the subject unit and facility at a low cost, to flexibly carry out the withdrawal or the change of the place of installation or the size of the unit and facility and to activate purification ability by automatically shaking off microorganisms or their corpse deposited on a microorganism carrier. SOLUTION: Microorganisms (mainly aerobic bacteria) capable of decomposing an organic material are stuck on the microorganism carrier 21. That is, the microorganism carrier 21 is functioned as a bacteria bed. When the microorganism carrier 21 and a weight is brought into contact with water flow, the organic material contained in the water is caught and decomposed by the microorganism. Being suspended in the water to enable to be rocked, the microorganism carrier 21 is rocked by the water flow. Then, microorganisms or their corpse stuck to the microorganism carrier 21 are properly shaken off and the distribution state of the microorganisms proper for the decomposition of the organic material, where the activity of the aerobic bacteria is activated and also anaerobic bacteria enable to be grown, is formed.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification unit for lakes and the like and a water purification facility for lakes and the like, and more particularly to a water purification unit for lakes and the like and a water purification facility for lakes and the like that can be constructed by simple construction. .

[0002]

2. Description of the Related Art As a facility for purifying the water quality of lakes and marshes and rivers that have become increasingly contaminated, for example, a microorganism carrier having a number of looped plastic threads attached to a string is submerged in water. Some microorganisms decompose contaminants by microorganisms that grow on the plastic yarn. This microorganism carrier is fixed to a metal or concrete frame, for example,
In some cases, this is fixed and placed in water, or a water channel made of concrete or the like is purposely constructed, and a microorganism carrier is attached to the water channel. In addition, depending on the location of the water purification facility, rivers may be dammed for construction of the water purification facility.

[0003]

However, in the above-mentioned conventional water purification facility, it is necessary to perform a considerably large-scale construction for arranging the microorganism carrier, and it takes enormous cost to construct the facility. I will. Furthermore, there is another problem that it is not easy to remove the once constructed water purification facility. Further, the conventional water purification facility has a drawback that it is difficult to change the arrangement place and the scale.

In addition, microorganisms and their dead bodies accumulate on the microorganism carrier with the passage of time. If the number of microorganisms increases, it becomes impossible to supply oxygen to the portion of the microorganism carrier to which the microorganisms and the like have adhered, and the activity of aerobic bacteria slows down. As a result, the water purification ability is extremely reduced. In the above-described conventional method of arranging a microorganism carrier, the microorganism carrier is fixed, so that while the microorganisms accumulate, they cannot be shaken off at all. For this reason, the water purification facilities that have been constructed may be left without functioning.

[0005] The present invention has been made in view of the above-mentioned conventional problems, and can be constructed at low cost, and can be flexibly removed, changed in the place of placement, and changed in scale.
It is another object of the present invention to provide a water purification unit such as a lake and the like and a water purification facility such as a lake and the like that can automatically purify microorganisms and their dead bodies deposited on the microorganism carrier and activate the purification ability.

[0006]

In order to attain this object, the invention of claim 1 comprises a main body floating on water, and a microorganism-carrying body on the lower surface of the main body, which hangs down in water so as to swing in water and to which microorganisms adhere. A water purification unit for a lake or the like, comprising a body and a weight for submerging the microorganism carrier in water.

According to a second aspect of the present invention, there is provided the water purification unit for lakes and marshes according to the first aspect, wherein the main body is constituted by a net.

According to a third aspect of the present invention, in the water purification unit for a lake or the like according to the first or second aspect, a planting base capable of planting is provided on an upper surface of the main body. Water purification unit.

According to a fourth aspect of the present invention, in any one of the water purification units for lakes and the like according to the first to third aspects, an entanglement preventing member connected to a lower end side of the microorganism carrier is provided. Water purification unit for lakes and marshes.

According to a fifth aspect of the present invention, in any one of the water purification units for lakes and the like according to the first to fourth aspects, the weight is made of a porous material. Unit.

According to a sixth aspect of the present invention, in any one of the water purification units for lakes and the like according to the first to fifth aspects, the connection means for connecting the main bodies of the water purification units for the lakes and the like and for easily disconnecting the connection. A water purification unit for a lake or the like, comprising:

According to a seventh aspect of the present invention, there is provided a water purification unit for a lake or the like according to the first aspect, wherein a plurality of main bodies are connected to each other, and the main bodies are floated on the lake or the like. A water purification facility for a lake or the like, comprising a water flow generating means for generating a water flow flowing toward the front.

According to an eighth aspect of the present invention, there is provided the water purification system for a lake or the like according to the seventh aspect, wherein the partition member is constituted by a member capable of circulating water to some extent. It is a facility.

According to a ninth aspect of the present invention, in the water purification facility for lakes and the like according to the seventh or eighth aspect, the water purification units are connected at intervals. It is.

[0015]

Embodiments of the present invention will be described below with reference to the drawings. The configuration of the water purification unit 1 for a lake or the like will be described. Reference numeral 3 denotes a main body, and the main body 3 is constituted by a plastic net plate having a certain degree of rigidity. The main body 3 has a shallow box shape and has a concave portion 5. Further, the main body 3 is provided with a tube-shaped float accommodating portion 7 surrounding the concave portion 5, and the float accommodating portion 7 accommodates a plastic bottle 8 with a cap closed as a float. In this way, the PET bottle 8 can be effectively used without any modification.

A flat connecting portion 9 is formed at each of the four corners, and a round hole 11 is formed in the connecting portion 9 as shown in an enlarged manner in FIG. A cylindrical reinforcing tube 13 is inserted into the round hole 11, and a male screw 15 is formed on an outer peripheral portion of the reinforcing tube 13. With the reinforcing tube 13 passed through the round hole 11, the female screw 19 of the retaining plate 18 is
And the retaining plate 18 is attached from above and below the reinforcing pipe 13 so as to sandwich the connecting portion 9. The connecting means includes a connecting portion 9, a round hole 11, a reinforcing tube 13, a retaining plate 18, and a connecting fitting 31 described later.

A planting base 17 is accommodated in the concave portion 5, and the planting base 17 is formed by pressing lightweight soil into a plastic fiber in a mat shape. The planting base 17 uses, for example, a trade name of Breathair manufactured by Toyobo Co., Ltd. Reference numeral 19 denotes a net plate, and the net plate 19 is made of a plastic such as polyethylene and is made of a flat plate of a net having some rigidity. This net plate 19 is attached to the lower surface of the main body 3. Also, the microorganism carrier 21 is placed on the net plate 19.
And the microorganism carrier 21 is suspended so as to be able to swing in water.

The microbial carrier 21 is made of plastic such as nylon, and is formed by attaching a number of thin threads 25 in a loop to a string 23 as shown in FIG. As the microorganism carrier 21, for example, a biospiral rope or the like manufactured by Nakada Sangyo Co., Ltd. is used. Microbial carrier 23
A weight 27 having a shape in which three flat plates are radially connected at equal intervals is attached to the ring-shaped yarn 25.
The weight 27 is made of porous ceramic,
Microorganisms can easily adhere to this. A net plate 22 as an entanglement preventing member is connected to the lower end side of the microorganism carrier 21. The net plate 22 is the same as the net plate 19.

Next, a method of installing the water purification unit 1 will be described. As shown in FIGS. 5 and 6, a plurality of water purification units 1 are connected and assembled in a raft shape, and are arranged floating on a swamp 29. In order to connect the water purification units 1 to each other, a worker on a boat joins the connection portions 9 of the water purification units 1 floating on the marsh 29, as shown in FIG. Legs 33 of the connecting metal fitting 31
Are inserted into the reinforcing pipe 13 of the water purification unit 1 to be joined to each other from above. As shown in FIG. 5, at a portion where the four joining portions 9 are joined, four connecting fittings 31 are used to
Two legs 33 are inserted into each of the reinforcing pipes 13 to connect the water purification unit 1.

The water purification unit 1 thus connected is arranged at a desired position, and connected to the wire 32 bound to the pile 30 fixed to the water bottom, thereby fixing the water purification unit 1. When the water purification unit 1 floats on the swamp 29, the microorganism carrier 21 quickly sinks into the water by the weight 27.

A partition plate 26 as a partition member made of a net plate made of plastic such as polyethylene is attached to the water purification unit 1 connected as described above. The holes in the partition plate 26 are smaller than the holes in the net plates 19 and 22. The partition plate 26 is arranged so as to cover the side portion of the connected water purification unit 1, so that the water purification unit 1 and the partition plate 26 form a square tubular water passage whose front and rear portions are open. Further, as shown in FIG. 7, the partition plates 26 are provided so that both ends thereof overlap with each other, and as shown by arrows in FIG.
When the water flow passes through a rectangular tubular water passage formed by the partition plate 26 and the partition plate 26, pressure is applied so that the overlapping portions of the partition plates 26 are closed.

Reference numeral 35 denotes a water purification device as a water flow generating means. The water purification device 35 has been filed by the applicant of the present application (Japanese Patent Application No. 10-150843, filed on June 1, 1998). is there. The water purification device 35
It comprises a pumping section 37 arranged on the ground, a bubble generating section 39 arranged in water, a pumping pipe 41, and a falling pipe 43. In the water purification device 35, the water assembled by the pump 45 via the pumping pipe 41 is sent to the protection cylinder 47 via the water dropping pipe 43. And protection cylinder 4
Water containing air bubbles is ejected from the air bubble generation cylinder through the inspection port 49 by the air bubble generation cylinder (not shown) accommodated in 7. The above water purification unit 1 and water purification device 3
5 constitutes a water purification facility for lakes and marshes.

The water flow injected from the inspection port 49 of the protection cylinder 47 travels along a trajectory indicated by an arrow in FIG. Exit to the rear. At this time, water is transferred to the microorganism carrier 2
Flow through one. Even if the water flow becomes extremely strong for some reason, since the partition plate 26 has a fine hole, water can escape to some extent through the hole of the partition plate 26. Therefore, it is possible to prevent the partition plate 26 from being opened or damaged.
Microorganisms (mainly aerobic bacteria) that decompose organic substances as pollutants adhere to the microorganism carrier 21. That is, the microorganism carrier 21 functions as a so-called bacterial bed. The weight 27
Is made of porous ceramic, so that microorganisms also adhere to the weight 27. When a water stream hits the microorganism carrier 21 and the weight 27 to which the microorganisms have adhered, the microorganisms take in organic substances contained in the water and decompose them.

By the way, microorganisms and their dead bodies adhere to the site where the microorganisms adhere over time, so that oxygen cannot be supplied to the inside of the adhered portion, and aerobic bacteria cannot inhabit. In such an environment, only anaerobic bacteria grow and cannot decompose organic matter. However, since the microorganism carrier 21 is suspended so as to be able to swing in water, it is caused to swing by the water flow. For this reason, the microorganisms and their dead bodies attached to the microorganism carrier 21 are appropriately shaken off, the activity of the aerobic bacteria is activated, and the distribution of the microorganisms suitable for the decomposition of organic substances capable of growing anaerobic bacteria is created. become. As described above, the microorganism carrier 21
Since the net plate 22 is attached to the lower end side of the microorganism carrier 21 even if swings, the microorganism carriers 21 can be prevented from becoming entangled with each other, and the microorganism carrier 21 can be prevented from swinging.

If the plant is planted on the planting base 17, the plant 5
The root of No. 1 extends to the planting base 17 and has a so-called symbiotic relationship with the microorganisms attached to the microorganism carrier 21, so that the organic matter taken in by the microorganisms grows as fertilizer. Therefore, purification of water quality is performed more quickly. In addition,
Since the main body 3 is constituted by a net, the water in the swamp 29 is sucked up to the planting base 17 and there is no need to water the plants 51.

As described above, if the water purification unit 1 is used, a water purification facility can be constructed at low cost without performing a large-scale construction. In the above-described embodiment, an example in which ten water purification units 1 are connected is shown. However, the number is determined by the size of a lake or the like and is not limited to ten. . In some cases, only one water purification unit 1 may be used. Thus, it is possible to flexibly respond to a change in scale.

The water purification unit 1 further includes a wire 32
If it is removed, it can be easily moved and removed by towing as it is, and the location can be easily changed in the same manner. When disassembling the connected water purification unit 1, it is only necessary to pull out the connection fitting 31, so that it can be separated very easily. Therefore, for example, replacement of the damaged water purification unit 1 can be easily performed.

FIG. 8 shows a water purification facility 41 according to another embodiment. Although not shown, the water purification facility 41 is provided with a water purification device 35 as in the above embodiment. This water purification facility 41 is a water purification unit 1
, Except for the connection state. Therefore, the reference numerals used in the above embodiment are referred to.

The water purification units 1 are connected by a connecting member 46 made of a stainless steel metal rod, and are arranged at intervals. The partition members 26 are provided not only on the sides of the water purification unit 1 but also on the sides between the water purification units 1 arranged at intervals (a space where only the water of the swamp 29 exists). Is provided. Since the water purification units 1 are arranged with an interval between them,
Water purification unit 1 with roots of plants 51 intertwined
Can be prevented from being hindered from being disconnected.

Although the embodiment of the present invention has been described in detail above, the specific configuration is not limited to this embodiment, and there is a change in design without departing from the gist of the present invention. Are also included in the present invention. For example, the main body and the like are made of plastic, but may be made of wood or the like. Palm fiber or the like may be used as the planting base. The weight may be made of ceramic, metal, or the like. The microorganism carrier itself has a specific gravity that sinks in water, and if it sinks in water by its own weight, the microorganism carrier itself becomes the weight. The length of the microorganism carrier is appropriately changed depending on the water depth and the like. Depending on the speed of the water flow,
The partition member may be not completely perforated but may be completely closed.

[0031]

As described above, according to the present invention, a water purification facility can be constructed at low cost. In addition, it is possible to easily remove the water purification facility and change the location of the water purification facility, and to flexibly cope with a change in scale. Further, the microorganisms and their dead bodies accumulated on the microorganism carrier are automatically shaken off, so that the purification ability can be always activated.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a water purification unit according to an embodiment of the present invention is connected.

FIG. 2 is an exploded perspective view of the water purification unit according to the embodiment of the present invention.

FIG. 3 is a perspective view showing a state in which a weight is entangled with the microorganism carrier of the water purification unit according to the embodiment of the present invention.

FIG. 4 is a perspective view of a connecting portion of the water purification units according to the embodiment of the present invention.

FIG. 5 is a plan view of a swamp equipped with a water purification facility according to an embodiment of the present invention.

FIG. 6 is a side view of a swamp equipped with a water purification facility according to an embodiment of the present invention.

FIG. 7 is a plan view for explaining an arrangement state of a partition plate of the water purification facility according to the embodiment of the present invention.

FIG. 8 is a plan view illustrating a connected state of water purification units constituting a water purification facility according to another embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 Water purification unit for lakes and marshes 3 Main body 5 Recess 9 Connection part 11 Round hole 13 Reinforcement pipe 18 Retainer plate 17 Planting base 19, 22 Net plate 21 Microorganism carrier 26 Partition member 27 Weight 29 Marsh 31 Connection fitting 35 Water purification apparatus

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Yutaka Matsumoto 1364 Comments from Toyotamachi, Iwata-gun, Shizuoka Prefecture (72) Inventor Mitsuaki Suzuki 2-7-6 Ando, Shizuoka-shi, Shizuoka Prefecture (72) Inventor Kiyotaka Maeba, Shizuoka Prefecture 1396 Ikeda, Shizuoka F-term (reference) 4D003 AA06 AA17 AB19 BA02 BA07 CA07 CA08 DA18 DA19 DA21 DA30 EA09 EA17 EA18 EA19 EA24 EA30 EA35 EA40 4D029 AA09 AB03 BB11 4D040 CC01 CC07

Claims (9)

[Claims] 1. A method comprising: a main body floating in water; a microorganism carrier suspended on a lower surface of the main body so as to swing in water to which microorganisms adhere; and a weight for submerging the microorganism carrier in water. A characteristic water purification unit for lakes and marshes. 2. The water purification unit for lakes and marshes according to claim 1, wherein the main body is constituted by a net. 3. A water purification unit for a lake or the like according to claim 1, wherein a planting base capable of planting is provided on an upper surface of the main body. 4. A water purification system for a lake or the like according to any one of claims 1 to 3, further comprising an entanglement preventing member connected to a lower end of the microorganism carrier. unit. 5. A water purification unit for a lake or the like according to any one of claims 1 to 4, wherein the weight is made of a porous material. 6. A water purification unit for a lake or the like according to any one of claims 1 to 5, further comprising a connecting means for connecting the main bodies of the water purification units for the lake or the like and disconnecting the connection easily. A characteristic water purification unit for lakes and marshes. 7. A plurality of water purification unit bodies such as lakes and marshes according to claim 1 are connected to each other, and a partition member for covering a side portion of the connected water purification units is provided. And a water flow generating means for generating a water flow flowing toward the front of the water purification unit in a lake or the like. 8. The water purification facility for lakes and marshes according to claim 7, wherein the partition member is constituted by a member capable of flowing water to some extent. 9. A water purification facility for lakes and marshes according to claim 7, wherein the water purification units are connected at intervals.