JP2002282893A - Water clarification system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To aim at lightweight equipment, improvement of clarification efficiency and stabilization of installation status. SOLUTION: This is a water clarification system that an underwater aeration pump 20 is installed on floats 11a and 11b and water is spouted through a contact material 40 installed under the floats. The float 11b supports the pump 20 as a self-floating type, allowing free vertical movement without rendering any impact to the float by spouted water reaction force. The contact material 40 is divided vertically in several tiers, and each of the divided contact materials 40a and 40b is arranged to avoid interfering with each other vertically and is expandable/contractable to follow variable water levels. The circumference of the contact material 40 is enclosed by flexible cylinders 18a and 18b and the clarification efficiency improves by letting water flow from the bottom portion of the contact material 40 to a pump 20 through these cylinders. The contact material 40 is supported by a leg 19a located in the center of the bottom and is freely swingable on the entire circumference by having this leg as a fulcrum. Irrespective of unevenness of the bottom of water w, the apparatus 10 is installed with a stable floatation.

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 purifying water by fountain through a water treatment contact material.

[0002]

2. Description of the Related Art Beautification and preservation of the natural environment, especially in recent years, have become a new social problem as a national issue. As one of the pillars, emphasis is placed on purification of rivers and lakes. Above all, purification of ponds (hereinafter, irrigation ponds) for agricultural water, which is a closed water area, is required. There are approximately 100,000 reservoirs nationwide, and the water storage capacity is 1,000 to 10
Although it is relatively small at 10,000 m ³ , it is easily polluted because of its small size, and water purification is required.

[0003] As an economical purification method suitable for a reservoir, it is considered that a device for promoting a natural purification function is good, and as this purification device, a number of techniques have been disclosed. Japanese Patent Application Laid-Open No. H8-10794 (Publication 1) discloses a filter submerged in water in a frame floating on the water surface (a stitch-like contact material and a contact filler), an underwater aeration pump, and an underwater aeration pump. A water purification device including a connected water pipe (water gap) is disclosed. In this device, water is pumped through a water guide pipe by a submersible aeration pump, the pumped water is diffused into the atmosphere to take in air, and falling water bubbles are beaten and ruffled on the water surface. Also, since the water in the water is guided to the water pipe through the filter,
It can adsorb and remove nutrients such as coarse garbage and phosphorus, organic substances, sludge and sludge, and exert a natural purification function by aeration.

Japanese Patent Application Laid-Open No. 2000-79398 (Japanese Patent Laid-Open Publication No. 2000-79398) discloses that a water treatment contact material is disposed inside a protective tube which is opened up and down, and microorganisms attached to the water treatment contact material are proliferated by aeration. A water purification apparatus for purifying water by the oxidative decomposition of organic substances by the microorganisms is disclosed. In this device, a water purification device is disposed in the gap between the double cylinders in order to promote the action thereof, and the cylinder is suspended from a raft or connected from the bottom of the water to be vertical in the water. The inner cylinder of this double cylinder structure plays the role of an air tank, buoyancy works and the suspension force is light, and it can be made vertical in water. It also states that the position of the protective cylinder can be adjusted with bolts, so that it can respond to changes in water depth.

[0005]

The technique described in Publication 1 is
Since the underwater aeration pump is provided on the frame floating on the water surface, it cannot be purified at a certain position, such as when it flows due to wind, etc., and the purification device rotates due to the reaction force of the pump. It is stable. Further, since the sludge or the like is clogged in the filter made of the mesh-like contact material and the contact filler, it is necessary to periodically perform maintenance or replace the filter.
Furthermore, it is said that the natural purification function by aeration for adsorbing and removing nutrients such as phosphorus or organic substances, sludge or sludge through a submersible aeration pump and a filter is low.

[0006] The technique described in Japanese Patent Application Laid-Open Publication No. H08-150572 enhances a purification function by aerating a water treatment contact material instead of the above filter. However, the water treatment contact material is arranged on the wall surface of the inner cylinder,
Since there is a gap between the air and the protection cylinder, and whether the air supply from the air hole or the air supply from the bottom of the inner cylinder is adjusted by the strength of the aeration, the air supply from the air hole Then, the contact efficiency is not good because the air rises on the inner side of the water treatment contact material and the outer wall surface of the inner cylinder.On the other hand, when air is supplied from the bottom of the inner cylinder, Since the air rises by the inner wall surface of the protective cylinder, the contact efficiency is not good. That is, it does not ensure that the air efficiently contacts the water treatment contact material. Therefore, there is a question about the effect of increasing the microorganisms attached to the water treatment contact material by the water treatment contact material and aeration, and purifying the water quality by the oxidative decomposition of organic substances by the microorganisms. In addition, in response to a change in water depth by adjusting the position of the protective cylinder using bolts, since the water depth varies in accordance with various conditions, the adjustment work is complicated, and danger is not avoided because the work is a water work. .

An object of the present invention is to solve the above problems.

[0008]

According to the present invention, an underwater aeration pump is firstly supported as a self-floating type on a frame (float) floating (floating) on the water surface so as to be vertically movable. In this way, by allowing the submersible water pump to freely move up and down, the transition from the operation of the submersible aeration pump to the stoppage or the reverse, and the vertical movement due to the fountain pressure, do not affect the float. For this reason, the float can stably float on the water surface, its rigidity is not required, the weight can be reduced, and the float can stably float even if the water surface is ruffled by the influence of wind or the like. In addition, since the fountain by the submersible aeration pump also draws a stable trajectory, it becomes a visually beautiful purification device.

Next, according to the present invention, the water treatment contact member can be expanded and contracted in the length direction in accordance with the vertical direction of the water surface (fluctuation of the water level). In this way, regardless of the position of the water surface, all the water treatment contact materials are used, the purification efficiency is increased, and the device can be maintained in a stable installation state.

[0010] In the present invention, the water to the underwater aeration pump is caused to reach from the lower surface of the water treatment contact material by covering the periphery of the water treatment contact material. In this case, the distance through the water treatment contact material is increased, and the purification efficiency is increased.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As an embodiment of the first means of the present invention, an underwater aeration pump is provided at the center of a float floating on the water surface, and a water treatment contact material is provided on the lower surface of the float, and In a water purification device for jetting water through the water treatment contact material by an aeration pump, a configuration can be adopted in which the underwater aeration pump is vertically movable and supported on a float as a self-floating type. As an embodiment of the means, in the water purification device, the water treatment contact material is divided into a plurality of stages in the vertical direction, the bottom surface is supported on the water bottom, and the divided water treatment contact materials interfere with each other in the vertical direction. And the vertical movement of each of the divided water treatment materials can be allowed to overlap with each other, and as an embodiment of the next means, In quality purifying device, can be adopted a configuration in which to reach the water in water aeration pump from the lower surface of the water treatment contact materials suffer around the water treatment contact material.

These configurations can be used in combination. In each of the configurations, the periphery of the water treatment contact member is covered with a tube, and the tube allows water to flow from a lower portion of the water treatment contact member to the submersible aeration pump. Can be. At this time, the cylinder is a resin cylinder,
It may be a rigid material such as a stainless steel tube, but if the water treatment contact material expands or contracts, the tube may be made of a flexible material such as a cloth that can move with the expansion or contraction, or the tube may be made of water treatment contact material. It is divided according to the division of the material and covers the periphery of each divided water treatment contact material, and each divided cylinder also allows mutual vertical movement accompanying the vertical movement of each divided water treatment contact material to overlap. Shall be.

In each of the above constructions, if the bottom surface of the water treatment contact material is supported by the center leg, and the water treatment contact material is allowed to swing around the entire periphery with the leg as a fulcrum, the water bottom has irregularities. Even in the case of uneven ground, the device is supported at one point on its bottom surface, and provides stable levitation.

Further, a weight may be provided around the float to stabilize the floating of the float, and the float may be moored to the water bottom with a rope.

If an aeration nozzle is provided on the lower surface of the water treatment contact material and air is sufficiently supplied to the water treatment contact material, the oxidative decomposition of organic substances by microorganisms is promoted, and the water treatment contact material is provided. Unnecessary substances adhering to the material are smoothly peeled and dropped, thereby improving water purification.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention is shown in FIG. 1 to FIG. 8, and a required number of water purification devices 10 of this embodiment are arranged in a reservoir P as shown in FIG. Floats 11a and 11b are provided at fixed intervals on a scaffold plate 13a.
The floats 11a, 1
The solar cell 13 is arranged between 1b. The solar cell 13 supplies power to the underwater aeration pump 20 and the aeration pump 30. In addition, both pumps 20, 3
Power can be supplied from outside the reservoir P to 0,
Electric power can be supplied according to the amount of power generated by the solar cell 13.

The underwater aeration pump 20 is a self-floating type having a float 21 made of a foamed resin or the like on its periphery as shown in FIGS. 2 and 7, and a hook 22 of the inner float 11b is attached to a guide 22 around the float. The support rod 23 is fitted, and the fitting allows the pump 20 to move up and down with respect to the inner float 11b. This pump 20
Water is absorbed from the lower suction port 24 and water a is spouted from the upper spout 25 as shown in FIG.

An octagonal frame-shaped upper frame 12a is provided on the lower surface between the inner and outer floats 11a and 11b, and a lower frame 12b of the same shape is fitted to the upper frame 12a so as to be vertically movable. A water treatment contact material 40 is provided between the inner and outer floats 11a and 11b in the upper and lower frames 12a and 12b, and the water treatment contact material 40 is a fringe contact material. For example, Kurashiki Spinning Co., Ltd .: Trade name: Use bioactors. This fringe contact material 40 '
Is supported in a plate shape by upper and lower rods 41, as shown in FIG.
These are arranged in an octagonal cylinder, and are vertically arranged in two stages.
As shown in FIG. 6, the upper and lower fringe contact members 40 'are upper ones 40a supported by the upper frame 12a.
Thus, the lower member 40b supported by the lower frame 12b is shifted back and forth so as not to overlap in the vertical direction. Therefore, the upper and lower fringe contact members 40 'move up and down to fit each other, and the water treatment contact member 40 expands and contracts in the vertical direction. At this time, the fringe contact member 40 'may be staggered in the length direction of the upper and lower rods 41 so that the contact member 40' of the upper frame 12a and the contact member 40 'of the lower frame 12b mesh with each other in plan view. The gap between the contact members 40 'can be reduced as much as possible, and the purification efficiency can be improved. The upper rod 41 of the sewage treatment contact member 40a is fixed to the upper frame 12a, and the upper rod 41 of the sewage treatment contact member 40b is fixed to the frame 12b.

The lower frame 12b is vertically movably fitted to a vertical rod 15a of the upper frame 12a via a guide 12c.
a moves up and down with respect to the lower frame 12b. An erect rod 15b is provided at an appropriate position around the lower frame 12b, and an annular rod 16 is provided at a lower end of the erect rod 15b. An aeration nozzle 17 extends radially from the center of the lower annular rod 16. . An air chamber 31 is provided at the center of the nozzle 17, and compressed air is sent into the chamber 31 from the pump 30 by a flexible tube (not shown). For this reason, aeration is performed from the lower surface of the water treatment contact material 40 to the entire area thereof. Upper and lower frames 12a,
The vertical rods 15a, 15b and the guide 12c serving as the elevating guide of the 12b can be provided in the space inside the cylindrical water treatment contact member 40 (the lower surface of the inner float 11b).

An upper tube 18a made of tent cloth is provided on the outer periphery of the outer float 11a so as to cover the water treatment contact material 40a, and the tube 18a is hung by the annular pipe 14 at the lower end. A lower cylinder 18b also made of tent cloth is provided on the lower frame 12b.
0b.
8b are shifted inward and outward, and the upper and lower water treatment contact materials 40a, 40
b corresponds to the up and down movement, and the up and down movement is allowed.
As the cylinders 18a and 18b, non-flexible ones such as resin cylinders may be used in addition to flexible ones such as a tent cloth.

A screen 19 is provided on the lower surface of the lower annular rod 16.
Is provided, and a leg 19a is provided in the center thereof,
The leg 19a abuts on the water bottom w to support the entire device 10. This support at the center is advantageous when the water bottom w is uneven, and when the water bottom w is horizontal, the legs 19a are provided at appropriate positions around the circumference as shown by the chain line in FIG.

A float 51 made of a foamed resin is provided around the outer float 11a at regular intervals around the float 11a. The float 51 gives buoyancy from the surroundings, and the device 10 stably floats. In addition, the float 51
Is provided with a weight 52 to stabilize the levitation. Further, the weight 52 is connected to an anchor weight 54 on the water bottom w via a rope 53 to further stabilize the floating.

This embodiment has the above configuration.
When the submersible aeration pump 20 operates, the water at the bottom of the water flows from the screen 19 through the water treatment contact member 40 to the pump 20 and is fountain. The water a that has fallen by this fountain is
The surface of the pond is beaten and ruffled to promote the inclusion of air and suppress phytoplankton generated in the surface water of the pond. The cylinder 18
Since the water treatment contact material 40 is covered with a and 18b, the water sucked by the submersible aeration pump 20 sucks low-layer water having a low oxygen content, and increases the oxygen content by this circulation, thereby smoothly purifying aerobic water. I do. Suspended substances that have reacted and separated with microorganisms at the fringe of the water treatment contacting material 40 are sucked up by the submersible aeration pump 20 and ejected to the surface layer. Proliferating substances that have fallen naturally increase the amount of oxygen in the pond. so,
Oxidative decomposition (aerobic reaction) is promoted at the bottom of the water to become a suspended substance. Similarly, the substance is sucked up by the underwater aeration pump 20 and ejected to the surface layer again.

Water treatment contact material 40a and sewage treatment contact material 4
0b is arranged so as not to interfere in the vertical direction,
The vertical movement corresponds to the water level fluctuation of the pond P. For example, it corresponds to the difference between the water level when the pond is full and the normal time during rainfall, or the water level when the pond is discharged and when the rice is planted. Incidentally, in the case of a pond usually having a depth of about 3 m, the lowest water level is said to be 1.5 m. If the pond is empty in winter, the device 10 is removed.

Also, by aeration, air bubbles come into contact with the whole of the water treatment contact material 40a and the sewage treatment contact material 40b, thereby increasing the lack of oxygen in the water (pond) to the water treatment contact material 40. It promotes the growth of attached microorganisms and oxidizes and decomposes pollutants to purify water. At this time, the microorganisms that have come into contact with the fringe 40 'multiply by the action described above, and fall naturally while peeling off from the fringe. it can. For this reason, since the function of water purification can be maintained by regeneration, the pump 30 is provided with an air tank, and the strength can be controlled by switching the valve. The nozzle 17 that blows out air bubbles may be formed by processing a fine hole in a pipe. However, commercially available bubble stones, ultra-fine bubble diffusers (for example, Misuzu Industrial Co., Ltd., trade name: Erastocks), etc. Is more preferred. With such a nozzle, the air intake is fine and the foam rises while diffusing, so the water treatment contact material 40
This is because air comes into contact with the entire surface.

FIG. 9 and FIG. 10 show another embodiment, in which the water treatment contact material 40 is provided as a single layer.
The upper and lower frames 12a and 12b are one frame 12,
The tent cloth cylinder 18 covers the water treatment contact material 40.

[0027]

According to the present invention, as described above, the weight of the apparatus is reduced, and the fountain also draws a beautiful trajectory. In addition, high purification efficiency can be obtained, and the installation state can be stabilized. Furthermore, if the upper and lower frames can be moved up and down with respect to each other, it is possible to smoothly cope with water level fluctuation.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an installation example of one embodiment.

FIG. 2 is a cutaway front view of the embodiment.

FIG. 3 is a plan view of the embodiment.

FIG. 4 is a bottom plan view of the embodiment.

FIG. 5 is a schematic view of a water treatment contact material of the embodiment.

FIG. 6 is a layout diagram of the water treatment contact material.

FIG. 7 is a sectional view of the submersible aeration pump section of the embodiment.

FIG. 8 is a sectional view of a main part of the embodiment.

FIG. 9 is a cutaway front view of another embodiment.

FIG. 10 is a plan view of the embodiment.

[Explanation of symbols]

 P Reservoir 10 Water purification device 11a, 11b Float 12a Upper frame 12b Lower frame 15a Standing rod for frame 15b Standing rod for frame 16 Annular rod for lower frame 17 Aeration nozzle 18a, 18b Cover tube for water treatment contact material 19 Screen 19a Leg Reference Signs List 20 underwater aeration pump 21 float for underwater aeration pump 22 underwater aeration pump guide 23 underwater aeration pump support rod 24 underwater aeration pump inlet 25 underwater aeration pump spout 30 aeration pump 40, 40a, 40b water treatment contact material 51 float 52 weight 53 Rope 54 anchor weight

Continuing from the front page (72) Inventor Nagahiro Shoko 1-12-19 Kitahorie, Nishi-ku, Osaka City Inside Kurimoto Iron Works Co., Ltd. (72) Inventor Toshikazu Oe 1-112-19, Kitahorie, Nishi-ku, Osaka Stock Company Inside Kurimoto Iron Works (72) Inventor Takashi Niwa 1-12-19 Kitahorie, Nishi-ku, Osaka Co., Ltd.Inside Kurimoto Iron Works (72) Inventor Tadashi Ishige 1-12-19 Kitahorie, Nishi-ku, Osaka Stock Company Inside the Kurimoto Iron Works (72) Inventor Mitsuhiro Kawabata 1-12-19 Kitahorie, Nishi-ku, Osaka

Claims (10)

[Claims] 1. Floats 11a, 11b floating on the water surface
An underwater aeration pump 20 is provided at the center of the float, and a water treatment contact member 40 is provided at the lower surface of the float.
A water purification device for ejecting water through the water treatment contact member 40, wherein the underwater aeration pump 20 is supported by the float 11b as a self-floating type so as to be vertically movable. 2. Floats 11a, 11b floating on the water surface
An underwater aeration pump 20 is provided at the center of the float, and a water treatment contact member 40 is provided at the lower surface of the float.
A water purification device that jets water through the water treatment contact member 40, so that the water to the underwater aeration pump 20 covers the periphery of the water treatment contact member 40 and reaches from the lower surface of the water treatment contact member 40. A water purification device, characterized in that: 3. Floats 11a and 11b floating on the water surface
An underwater aeration pump 20 is provided at the center of the float, and a water treatment contact member 40 is provided at the lower surface of the float.
A water purification device for jetting water through the water treatment contact material 40, wherein the water treatment contact material 40 is divided into a plurality of stages in the vertical direction, the bottom surface of the water treatment contact material 40 is supported on the water bottom w, and each divided water treatment A water purification apparatus characterized in that the contact members 40a, 40b are arranged so as not to interfere in the vertical direction, and the vertical movement of each of the divided water treatment members 40a, 40b is allowed by overlapping each other. 4. The water treatment contact member 40 is covered with a flexible tube around the water treatment contact member 40, and water is supplied to the water treatment contact member 40 by the flexible tube.
4. The water purification device according to claim 3, wherein the water purification device is configured to reach the underwater aeration pump 20 from a lower portion of the water purification device. 5. 5. A cylinder covering the periphery of the water treatment contact member 40 is divided according to the division of the water treatment contact member 40 so as to cover the periphery of each of the divided water treatment contact members 40a and 40b. 4. The water purification apparatus according to claim 3, wherein each of the divided cylinders 18a and 18b overlaps and allows mutual vertical movement accompanying the vertical movement of each of the divided water treatment contact members 40a and 40b. 6. The water treatment contact member 40 is supported by a central leg 19a at the bottom surface of the water treatment contact member 40, and the water treatment contact member 40 is swingable around the entire periphery with the leg 19a as a fulcrum. Item 6. A water purification device according to any one of Items 2 to 5. 7. The water purification apparatus according to claim 2, wherein the underwater aeration pump 20 is of a self-floating type and is supported on the float 11b so as to be vertically movable. 8. A weight 5 around the float 11a.
The water purification apparatus according to any one of claims 1 to 7, wherein the floats (2) are provided to stabilize the floating of the floats (11a, 11b). 9. The water purification apparatus according to claim 1, wherein the periphery of the float 11a is moored to the bottom of the water with a rope 53. 10. The aeration nozzle 17 is provided on a lower surface of the water treatment contact member 40.
A water purification device according to any one of claims 1 to 9.