JPH08246495A - Improving apparatus for quality of water - Google Patents

Abstract

PURPOSE: To increase the oxygen content of ooze, and to improve the quality of water, by providing a function of generating rising vortex flow by a swivel type rotary body, by providing a function of digging up ooze like a shovel, and by causing the subdivision of bubbles together with the agitation of the ooze. CONSTITUTION: An air-taking in part 12 is provided at the bottom part of a sleeve-shaped diaphragm. A swivel type rotary part 22 having radially placed hollow arm parts 22a which communicate with the air-taking in part 12 and which are rotatably connected therewith is provided, and air-blowing parts each are provided at the top ends of the hollow arm parts 22a. Furthermore, air-blowing parts for digging up ooze each are formed at the top ends of the hollow arm parts in opposite direction to the rotary direction of the rotary part 22 and pointing obliquely downward. The swivel type rotary body 2 rotates by reaction force of air-splaying pressure, produces voltex flow energy, and subdivides bubbles, and thus oxygen is allowed to dissolve into the ooze. Agitating energy digging up the ooze is applied by air blowing from the air-blowing parts and the oxygen is efficiently mixed into the ooze. In this way, the quality of water is improved and the ooze is made efficiently inorganic.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water quality improving device, and more particularly to a water quality improving device effective for improving the water quality of rivers, swamps, moats, etc. where water is relatively stagnation.

[0002]

2. Description of the Related Art Water quality improvement measures in stagnant water areas of urban rivers, swamps and moats cannot be solved only by water circulation and increasing dissolved oxygen in water. Mineralization or removal of sediment deposited on the bottom of rivers, swamps, moats and the like has become a major issue. Conventionally, this bottom mud is removed by dredging or solidification.However, when implementing these methods in urban rivers with dense rivers, it is difficult to secure dredged sludge treatment sites and sites for installing dredging machines. And solidification is costly, and solidification is a concern for secondary contamination. In addition, sludge flows in from urban sewers together with rainwater and the like due to its mechanism. In a stagnant water area where the flow is slow, the sludge quickly accumulates, and it is necessary to repeatedly remove sludge.

[0003]

By the way, attempts have been made to improve the water quality of a stagnant water area by aeration from a diffuser plate or the like placed on the bottom. The aeration aims at mixing the water mass having a low oxygen concentration and the water mass having a high oxygen concentration with increasing dissolved oxygen. However, as a practical matter, mere aeration only dissolves in water by about several percent, and even when pure oxygen is used, it dissolves only by about ten percent or more. Also,
Since the presence of organic sludge consumes dissolved oxygen, it causes anoxic state at the bottom, and the water quality cannot be improved to the extent that it can be coveted.

SUMMARY OF THE INVENTION The present invention has been made in view of the conventional circumstances, and an object thereof is to provide a means for performing aeration with a function of generating an upward eddy current and a function of scooping up sludge, and using the eddy force to generate air bubbles. And improve the water quality and mineralization of the bottom mud by increasing the dissolved oxygen and increasing the mixing ratio of oxygen into the agitated sludge. It is to provide a water quality improvement device. Still another object is to provide a water quality improvement device which achieves the above object by moving in a desired water area such as a river, a moat or a swamp.

[0005]

[Means for Solving the Problems] The technical means taken to achieve the above-mentioned object is as follows: Claim 1 is that an air jet pressure is applied to the bottom of a cylindrical isolation wall placed on a river bottom, a marsh bottom, a moat bottom or the like. The gist of the present invention is to provide a swivel-type rotating body that rotates by the reaction force of 1. According to a second aspect of the invention, the swivel-type rotating body according to the first aspect is rotatably connected to an introducing portion that is provided at a bottom portion of the cylindrical isolation wall and that introduces supply air, and that communicates with the introducing portion. A rotary part having a plurality of radial hollow arm parts, an air blowing part provided at the end of the hollow arm part of the required book, and a rotation direction of the rotary part at the end of the hollow arm parts of the necessary book And an air blowing section for bottom mud scooping provided obliquely downward. According to a third aspect of the present invention, in the first or second aspect, a float for floating the cylindrical isolation wall together with the rotating body by the buoyancy of the supplied air is provided on the same cylindrical isolation wall, and the float moves the cylindrical isolation wall horizontally. The gist of the present invention is that it has a moving air blow-out portion facing in the direction. According to a fourth aspect of the present invention, the cylindrical isolation wall according to the third aspect has a flexible receiving film provided around an upper open portion thereof, and a flat annular surface constantly floating on the water surface at a leading edge of the flexible receiving film. The gist is that it has a floating body. Furthermore, claim 5 communicates with the air supply means installed in the base where the float of the cylindrical isolation wall and the air supply hose to the swivel type rotating body according to claim 4 is fixed by the anchoring means, and at the same time, the base is connected to the base. The gist of the present invention is to have a winding means for winding or rewinding the air supply hose, and to direct the moving air blowing portion in a direction opposite to the direction of rotation of the cylindrical isolation wall around the base. According to a sixth aspect of the present invention, the air supply means is controlled such that the base of the fifth aspect floats the cylindrical isolation wall at a predetermined time and moves the cylindrical isolation wall about the same base by a predetermined amount. After counting the predetermined number of times the cylindrical isolation wall was moved to the end area of the same plane annular area centered on the base of the river bottom, swamp bottom, and moat bottom together with the tubular isolation wall, the cylindrical isolation wall was moved by a predetermined amount to the base. A gist of the present invention is to provide a control unit for winding or rewinding the air supply hose by the winding means so as to approach or separate from the center. In addition, claim 7
The cylindrical isolation wall according to claim 6 is opposed to the base with respect to the base.
The gist is that it is placed on the body.

[0006]

According to the above technical means, there are the following actions. (Claim 1) By the rotation of the swivel type rotating body, both the swirling force and the stirring force for scooping the bottom mud are generated in the limited water area within the cylindrical isolation wall. This vortex force gives the bubble subdivision and the forcing force to make it easy to dissolve oxygen,
Moreover, the rising time of the bubbles to the water surface is lengthened and the moving range thereof is widened. On the other hand, the stirring power gradually and finely separates the bottom mud in the cylindrical isolation wall from the surface side and scoops it, thereby efficiently mixing oxygen. Therefore, on the one hand, the dissolved oxygen is greatly increased, and on the other hand, the mixing ratio of oxygen to the bottom mud is increased,
Increase the following time. (Claim 2) A radially hollow arm portion for generating a vortex force is provided with an air blowing portion for scraping bottom mud which is obliquely downward and in a direction opposite to the rotation direction. With this function, the bottom mud can be lifted up without reducing the swirl force. (Claim 3) After the water quality of the desired water area is improved and the bottom mud is mineralized, air is supplied to the float to eliminate the water inside and float the rotating body together with the cylindrical isolation wall. The supply of air is continued as it is, and the reaction force of the air blown out from the moving air blower moves the cylindrical isolation wall while holding the rotating body, and stops the air supply when it reaches the adjacent water area Then, the cylindrical isolation wall is dropped by its own weight and placed (fixed) on the bottom mud, thereby sequentially improving the water quality of the target water area and mineralizing the bottom mud. (Claim 4) The floating body, which is always floating on the water surface, and the cylindrical separating wall are connected by a flexible receiving film which is provided around the open upper portion of the cylindrical separating film. Therefore, even if the scooped bottom mud spills out of the cylindrical isolation wall due to the upward vortex force, it is received by the flexible receiving film and diffusion of turbidity to water areas other than the cylindrical isolation wall is prevented. (Claim 5) Improving water quality in a desired water area and mineralizing bottom mud mainly at a base having a simple structure fixed by anchoring means only by supplying air and winding and rewinding an air supply hose. (Claim 6) The improvement of the water quality of the desired water area and the mineralization of the bottom mud are carried out automatically and automatically every predetermined time (including a period) while being unmanned. (Claim 7) In addition, when the improvement of water quality and the mineralization of bottom mud are performed automatically and automatically over the entire target water area, the operation time is reduced by half.

[0007]

As described above, the present invention has the following advantages. (1) A vortex force and a stirring force for scooping up the bottom mud are both generated in a limited water area within a cylindrical isolation wall, so that the vortex force facilitates the dissolution of oxygen. Is generated, the rising time of the bubble to the water surface is lengthened, and the moving range is widened. Then, the bottom mud in the cylindrical isolation wall is gradually and finely separated from the surface side by the stirring force, and is scooped up, thereby efficiently mixing oxygen. Therefore, on the one hand, the dissolved oxygen is greatly increased, and on the other hand, the mixing ratio of oxygen to the bottom mud is increased, and the follow-up time is prolonged.
Therefore, efficient supply of dissolved oxygen, homogenization of dissolved oxygen with respect to the total depth of water, and stable supply of oxygen required for mineralization of fried bottom mud are carried out in parallel, improving water quality in continuous operation, and improving bottom sediment. Can be effectively made to be inorganic. (Claim 2) In addition, since the air outlet for bottom mud scooping is provided in the radial hollow arm that generates the vortex force in the direction opposite to the rotation direction and diagonally downward, without reducing the vortex force. It will be possible to lift the bottom mud. Therefore, a higher stable supply of dissolved oxygen is achieved, water quality is improved,
Mineralization of bottom mud can be performed more effectively. (Claim 3) In order to float and move by the supply of air to the float, supply and stop of the air are performed at predetermined time intervals or at predetermined intervals without moving each time by a large supporting means such as a crane. Thus, it is possible to sequentially improve the water quality of the target water area and mineralize the bottom mud. (4) A flexible receiving film is provided at an upper open portion of the cylindrical isolation wall, and even if the scooped bottom mud overflows from the cylindrical isolation wall due to an upward vortex force, the flexible receiving film is provided. Since the film is received by the membrane, the water area other than the cylindrical isolation wall is not turbid. (Claim 5) Further, the water quality of all the water areas within the length of the air supply hose is improved while moving in the circumferential direction and the front-back direction around the base of the simple structure fixed by the anchoring means.
Mineralization of bottom mud can be performed. (Claim 6) In addition, since the movement of the cylindrical isolation wall in the circumferential direction and the movement in the front-rear direction are controlled, the movement is within a predetermined range (the range of the length of the air supply hose) around the base. Can automatically and automatically improve the water quality of the water area and mineralize the bottom mud. Moreover, there is also versatility that both the anchored base and the tubular isolation wall can be moved to other water quality improvement points to improve the water quality. (Claim 7) Further, since two cylindrical isolation walls are provided, it is possible to share the target water area and to reduce the work time spent on it, thereby increasing the efficiency.

[0008]

Embodiments of the present invention will now be described with reference to the drawings. The drawing shows a water quality improvement device of the present embodiment.

The water quality improving device A comprises a cylindrical separating wall 1, a swivel type rotating body 2 installed at the bottom thereof, a float 3 for floating and moving the cylindrical separating wall 1 as necessary, and its rotating body 2. And a float 3 are connected to each other via an air supply hose 14, an air supply means 4, a winding means 5 for winding and rewinding the air supply hose 14, an air supply means 4, and a base 6 for installing the winding means 5. , The flexible receiving film 7 and the like provided around the cylindrical isolation wall 1.

The cylindrical isolation wall 1 has a diameter of about 1000 mm and a height of about 2000 mm (a shape that can be expanded and contracted in two steps).
In the shape of a cylinder whose upper and bottom surfaces are open, round rods 11 having a diameter of 10 mm are vertically provided at appropriate intervals in the height direction, and provided at appropriate intervals in the height direction with the round rod group 11a. The circular rod 11 which is annular in a plan view is fixed to the inner surface by a desired means such as welding.
Around the base 21, a round bar 11 is fixed radially to a bottom portion to form a support portion 2 ′ of the swivel type rotating body 2, and a side peripheral surface portion near the bottom is formed by a wire mesh 31. .
The nonwoven fabric 21 and the wire mesh 31 are lightweight and fine in order to isolate the inside of the cylindrical isolation wall 1 from the outside water area.

[0011] The swivel type rotating body 2 is provided with the support portion 2 '.
Rotating part having a plurality of (four in this embodiment) hollow arms 22a radially connected to the introducing part 12 and rotatably connected to the inside thereof. 22 and
An air blowout portion 32 provided at the tip of a desired hollow arm portion 22a facing the direction opposite to the rotation direction of the rotating portion 22, and an air for bottom mud lifting provided at the tip of one or necessary books of the hollow arm portion 22a. Blowing part 42
It has and.

The air blowing portion 32 is horizontally projected in a direction opposite to the rotating direction of the rotating portion 22, and rotates the hollow arms 22a by the reaction force of the air blowing pressure to form a cylindrical isolation wall. 1 has a function of generating a spiral flow.

The air blowing portion 42 for scraping bottom mud is provided with a hollow arm portion 22a at one or two of the four hollow arm portions 22a.
Is projected in the direction opposite to the direction of rotation of the slant and obliquely downward, and has a function of scraping bottom mud (eg, sludge) into the cylindrical isolation wall 1. The number of the hollow arms 22a, the number of the air blowing portions 32 provided at the tip thereof, and the number of the air blowing portions 42 for scavenging the bottom mud and their positional relationship are determined in consideration of the swirling force and the rate of scavenging the bottom mud.

The float 3 is formed of a desired metal material such as stainless steel or a synthetic resin material, and is provided around the open upper portion of the cylindrical isolation wall 1.

In this embodiment, the float 3 has a rectangular annular shape in plan view, has an air inlet 13 and a moving air blower 23, and receives water supplied thereto to remove water retained therein. Cylindrical isolation wall 1 with swivel-type rotating body 2 while discharging
The cylindrical isolation wall 1 provided with the swivel type rotating body 2 is blown by the pressure of the air blown from the moving air blowing unit 23 by the continuous supply of air. It can be moved while floating. In this embodiment, two moving air blow-out portions 23 are provided so as to project in the opposite direction to the rotation direction so as to rotate the air supply hose 14 connected to the air supply means 4 installed on the base 6 described later as a radius. ing.

The space formed between the float 3 and the cylindrical isolation wall 1 is closed by a blind plate.

The flexible receiving film 7 is provided around the upper open portion of the cylindrical isolation wall 1 and is fixed to an annular floating body 17 having a distal end edge floating on the water surface.

Therefore, the hollow arms 22a... Of the swivel type rotating body 2 rotate about the center of the support 2 'by the supplied air, and the swirling force and the vortex force in the limited water area in the cylindrical isolation wall 1 are limited. Agitating power to scoop up the bottom mud is generated together. The swirling force imparts a fragmentation of bubbles that facilitates the dissolution of oxygen into water and a force for dissolution, and also increases the rising time of bubbles to the water surface and widens the range of movement. The stirring power gradually and finely separates the bottom mud from the surface side and scoops it, thereby efficiently mixing oxygen. Therefore, on the one hand, the dissolved oxygen is increased, and on the other hand, the mixing ratio of oxygen to the bottom mud is increased, and the following time is also long. As a result, high-efficiency supply of dissolved oxygen, uniformization and scavenging of dissolved oxygen by circulation thereof, and stable supply of oxygen necessary for mineralization of bottom mud are performed in parallel, and supply of air to the float 3 is performed. The water quality is improved by sequentially moving the desired water area by control. In addition, the scooped bottom mud is repeatedly mineralized by rising and falling by vortex force. At that time, the scooped bottom mud that overflows from the cylindrical isolation wall 1 is received by the flexible receiving membrane 7, and does not pollute water areas other than the cylindrical isolation wall 1.

Such a cylindrical separating wall 1 is connected to an air supply means 4 and a winding means 5 provided at a base 6.

The base 6 is mounted on a block in which a required number of simple floating bodies 16 such as drums, for example, are mounted on a block, and the mounting base 26 is fixed to the bottom of the water area to be improved in water quality. 2) Two swivel type rotating bodies 2 and floats 3 which are immovably fixed at 36 and face each other across this base 6
An air supply means 4 for supplying air through the air supply hose 14 and a winding means 5 for winding / rewinding the air supply hose 14 are provided.

The air supply means 4 is a compressor, and the winding means 5 is an automatic winding drum.

The air supply means 4 is controlled so that the cylindrical isolation wall 1 floats at the base 6 at a predetermined time and the cylindrical isolation wall 1 is moved about the base 6 by a predetermined amount. At the same time, the cylindrical isolation wall 1 is moved to the terminal area of the same planar annular area of the river bottom, the swamp bottom, and the moat bottom, and then the cylindrical isolation wall 1 is moved toward or away from the base 6 by a predetermined amount. A control unit 8 for winding or rewinding the air supply hose 14 by the winding means 5 is provided.

The control unit 8 controls the time or period required for mineralizing the bottom mud in the cylindrical isolation wall 1 by swirling and scooping, and the amount of air required for moving to the adjacent water quality improvement target water area. And its travel time are both stored in advance,
Further, the number of movements to the end area of each coplanar annular area is stored, and the number of movements is counted up to the number of storages. The take-up drum 5 is wound up or rewinded by an amount corresponding to one outside or inside (a movement amount for moving the base 6 to the annular region in plan view). The number of movements is stored for each plan view annular region drawn by the diameter of the cylindrical isolation wall 1 centered on the base 6, and when the count of the number of movements matches the corresponding stored value, the air supply hose 14 is turned on. The winding drum 5 is wound or rewound by a predetermined amount as described above.

In this embodiment, the cylindrical isolation wall 1 is connected to the base 6.
In order to prevent the air supply hose 14 from wrapping around when it is rotated around, the anchor 36 is fixed to the upper half 36a 'and the lower half 36a.
a '' is formed of a rotary valve 36a which rotatably engages with the communicating state maintained, and the lower half 36a '' is rotatably connected to a seat 36b fixed at the bottom,
The first half 36a 'of the rotary valve 36a is provided with the first air supply hoses 14a, 14a which communicate with the air supply means 4, and the lower half 36a'.
a "is connected to the second air supply hoses 14b and 14b communicating with the float 3 and the rotating body 2, and the lower half 36a" is wound or unwound from the second air supply hoses 14b and 14b. When the cylindrical isolation wall 1 is rotated around the base 6 with the radius of the second air supply hoses 14b, 14b, the lower half 36a "and the upper half 36 of the rotary valve 36 are provided.
a ′ rotates with it to prevent the hose from being twisted, so that the supply of air from the air supply means 4 is not hindered.

As described above, the cylindrical isolation wall 1 is rotated around the base 6 under the control of the control unit 8 to improve the water quality in a predetermined area in the same plane annular area and to mineralize the bottom mud. When the water reaches the terminal area of the same planar annular area while improving the water quality in the water area and the mineralization of the bottom mud is completed, the winding means (automatic winding drum) 5 has a predetermined amount (one of the cylindrical isolation walls 1). The second air supply hoses 14b, 14b are wound or unwound to improve the water quality of the outer or inner same plane annular area and mineralize the bottom mud. Continuing this, the two swivel type rotating bodies 2 and the cylindrical isolation wall 1 share the range permitted by the lengths of the second air supply hoses 14b, 14b with automatic control to improve the water quality and the bottom mud. Will be mineralized.

The air supply means 4, the winding means 5, the base 6 having the anchoring means 36, and the cylindrical isolation wall 1 having the swivel type rotary body 2 connected via the air supply hose 14 are both intended. When purification of the river, swamp, moat, etc. to be improved is completed, it is loaded on a truck or carrier using a desired unloading machine and transported to other rivers, swamps, moats, etc. that are subject to water quality improvement. It is used for purification of the target water quality improvement zone.

In this embodiment, the water quality improving device for improving the water quality and mineralizing the bottom mud while rotating around the base 6 fixed by the anchoring means 36 is described in detail.
Regarding 4 to 4, although not shown, an air supply means 4 is installed on a shore adjacent to a river, a moat, or a swamp to be improved in water quality, and the cylindrical isolation wall 1 is supplied by the supply of air from the air supply means 4. This includes sequentially improving the water quality in the same manner as in the above-described embodiment as far as the length of the air supply hose 14 allows the target water area to move sequentially. In this case, the float 3 is rotatably connected to the cylindrical isolation wall 1 and the rotation angle can be arbitrarily set by a motor so that the direction of the moving air blowing portion 23 can be freely changed. Preferably it is possible to do so. By doing so, the cylindrical isolation wall 1 can be moved in any direction. Claim 1 or 2
In the above, although not shown, rivers targeted for water quality improvement,
It includes a water quality improving device of a type that does not have so-called moving means that is placed in a desired water area of a moat or a swamp, and after the water quality is improved and the bottom mud is mineralized, it is gradually moved by means such as a crane or a ship. is there.

[Brief description of drawings]

FIG. 1 is a plan view of a water quality improvement device according to an embodiment.

FIG. 2 is a front view of FIG. 1;

FIG. 3 is an enlarged plan view of a tubular isolation membrane having a flexible receiving membrane.

FIG. 4 is a vertical sectional front view of FIG.

FIG. 5 is a plan view of a cylindrical isolation membrane having a float, in which a flexible receiving membrane is omitted.

FIG. 6 is an enlarged view of an air blowing portion of a swivel-type rotating body, (a) is an enlarged front view of an air blowing portion that generates a swirl, and (b) is a bottom mud for frying bottom mud. The enlarged front view of an air blowout part.

[Explanation of symbols]

A: Water quality improvement device 1: Cylindrical isolation wall 32: Air blowout part (for eddy current generation) 42: Air blowout part for bottom mud scooping 2: Swivel type rotating body 12: Introduction part 22a: Hollow arm part 22: Rotation Part 3: Float 23: Moving air blowing part 7: Flexible receiving film 17: Floating body 36: Anchor means 4: Air supply means 14: Air supply hose 6: Base 8: Control part 5: Winding means

Claims (7)

[Claims] 1. A swivel-type rotating body that rotates by a reaction force of an air jet pressure is provided on the bottom of a cylindrical isolation wall placed on a riverbed, a marshbed, a moatbed, or the like, and the bottom mud is lifted up by the rotating body. A water quality improving device characterized by having an air blowing portion for use therein. 2. The swivel-type rotating body is provided at a bottom portion of a cylindrical isolation wall with an introduction part for introducing supply air, and a plurality of radial parts which are rotatably connected in communication with the introduction part. A rotary part having a hollow arm part, an air blowing part provided at the tip of the hollow arm part of the required book, and a hollow arm part of the same book 1 to the necessary book in a direction opposite to the rotation direction of the rotary part and obliquely downward. The water quality improvement device according to claim 1, further comprising: an air blowout part for lifting the bottom mud. 3. A moving air blow-out unit in which a float for floating the cylindrical isolation wall together with the rotating body by the buoyancy of the supplied air is provided on the cylindrical isolation wall, and the float faces in a direction for horizontally moving the cylindrical isolation wall. 2. The method according to claim 1, wherein
Or the water quality improvement device according to 2. 4. The cylindrical isolation wall has a flexible receiving film provided around an upper open portion thereof, and a flat annular floating body which constantly floats on the water surface at a leading edge of the flexible receiving film. The water quality improvement device according to claim 3, wherein: 5. The air supply hose for the float of the cylindrical isolation wall and the swivel type rotating body is connected to the air supply means fixed to the base by anchoring means, and the air supply hose is wound around the base. 5. A winding means for winding or rewinding is provided, and the moving air blowing portion is oriented in a direction opposite to a direction of rotation of the cylindrical partition wall around the base.
The described water quality improvement device. 6. The air conditioner according to claim 1, wherein said base controls air supply means so as to float the cylindrical isolation wall at a predetermined time and move the cylindrical isolation wall around the base by a predetermined amount. River bottom, swamp bottom, after counting the predetermined number of times of movement to the end area of the same planar annular area around the base of the moat bottom, the cylindrical isolation wall approaching or approaching a predetermined amount around the base The water quality improvement device according to claim 5, further comprising a control unit that winds or rewinds the air supply hose with a winding unit so as to separate the hose. 7. The water quality improvement device according to claim 6, wherein two cylindrical isolation walls are arranged facing each other around a base.