JP2000079398A - Water purifying apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently activate the oxidative decomposition action of org. matter by microorganisms regardless of various conditions of rivers by accelerating the circulation of upper and bottom water layers of a river while increasing dissolved oxygen by aeration while suppressing the propagation and accumulation of a phytoplankton to bring about the improving effect on bottom material over a long period of time. SOLUTION: An air rising guide passage 6 and a water treatment contact material 1 are arranged between an upper and lower open type intermediate cylinder 13 and an inner cylinder 23 the upper end of which is closed, and an outer cylinder is supported around the intermediate cylinder 13 through a space to constitute a tripple cylindrical shape and the air 35 ejected from an air jet part 15 under the inner cylinder 23 rises while coming into contact with the whole of a water treatment contact material 1 to activate oxidative decomposition action by microorganisms. Further, an ascending flow is generated in the air rising guide passage 6 and a descending flow is generated between the intermediate cylinder 13 and the outer cylinder at the same time to accelerate the circulation of upper and bottom water layers of a river.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to water quality that promotes the oxidative decomposition of organic matter by microorganisms attached to a contact material for water treatment due to an aeration effect, a circulating effect of river water, and the like, and suppresses the growth and accumulation of phytoplankton. The present invention relates to a purification device.

[0002]

2. Description of the Related Art In recent years, rivers have been deteriorating in water quality. This is due to suspended matter and dissolved substances originating from organic matter mixed in industrial and domestic wastewater, and lack of circulation between the upper and bottom waters. It is considered that factors such as the generation of pollutants and the large amount of phytoplankton and the like grown in the upper layer float in water. By the way, as a water purification device for purifying such a river, there is a device in which a contact material for water treatment is directly installed in a river. As shown in FIG. 8, a plurality of water treatment contact members 100 formed of loop-like small filaments are provided radially around the string material 101, and a floating body 102 is attached to the upper end of the string material 101. The lower end is fixed to the riverbed, or as shown in FIG. 9, a water treatment contact member 103 made of a bar-shaped nonwoven fabric having a self-buoyant cross-section chrysanthemum is fixed to the riverbed via a string material 101. There is. These are provided in the water treatment contact material 100 or 103,
Microorganisms are attached, and the attached microbial film utilizes the action of oxidatively decomposing organic substances in a river.

[0003]

However, in the above-mentioned conventional water purification apparatus, the lower part of the contact material for water treatment is anaerobic in the bottom layer of the river with little dissolved oxygen, and the microorganisms are in an oxygen-deficient state. Even if the aeration is performed by installing a diffuser 104 at the bottom of the river to solve this, it is difficult to breed, but the bubbles blown out from the diffuser will be flown into the water flow of the river, and the bubbles and water treatment The contact efficiency of the contact material is poor, and the above problem cannot be solved. In addition, in a river with little circulation of upper layer water and bottom layer water, deterioration of water quality due to phytoplankton multiplication or lowering of bottom quality in the upper layer is not improved in combination with the above problem. Further, when the contact material for water treatment is clogged with deposits such as inorganic substances, cleaning work by human power is required, and the work time and labor cost are large.

The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to increase the dissolved oxygen by aeration and to promote the circulation of the upper and lower layer water of a river, thereby enabling microorganisms to remove organic matter. It is an object of the present invention to provide a water purification device that efficiently activates oxidative decomposition regardless of various river conditions, suppresses the growth and accumulation of phytoplankton, and also has an effect of improving sediment in the long term. . Another object of the present invention is to provide a water purification device that does not hinder the flow of water in a river even when water is increased, such as during heavy rainfall, and that further facilitates the work of cleaning the contact material for water treatment. .

[0005]

As a technical means of the present invention for achieving the above object, a first aspect of the present invention is to provide a vertically open type protective cylinder with an air rising and lowering opening secured inside the upper and lower. A water treatment contact material is arranged with its surface facing the guideway, and the protective cylinder is vertically held in water by holding means, and an air ejection portion is provided below the air-elevating guideway. The gist is that Claim 2 is to support the inner cylinder in the protective cylinder having upper and lower ends opened in a state in which a space is secured between the two cylinders by keeping the upper end closed and the lower end opened in the protective cylinder aligned with the cylinder core. In this double cylinder, the lower end of the inner cylinder is positioned above the lower end of the protective cylinder, and the double cylinder is submerged in a raft provided on the water surface or a fixture provided on the river bank via a hanging member. So that a water treatment contact material thinner than the width dimension of the space is provided on the inner surface of the protection cylinder or the outer surface of the inner cylinder of the double cylinder, and between the water treatment contact material and the outer surface of the inner cylinder. Alternatively, a guide path for air rise facing the water treatment contact material is formed between the water treatment contact material and the inner surface of the protective cylinder,
The double cylinder has an air ejection section for injecting air into the inner cylinder to generate buoyancy, and a weight that makes the double cylinder vertical is provided below the double cylinder, and a lower end of the inner cylinder is provided. The gist is that a plurality of air overflow ports are opened at equal intervals on the same circumference. Claim 3 supports the double cylinder in a state in which a space is secured between the two cylinders in a protective cylinder having upper and lower ends opened and aligned with the core of the cylinder and having an upper end closed and a lower end opened. In this double cylinder, the lower end of the inner cylinder is located above the lower end of the protection cylinder, and a water treatment contact material thinner than the width dimension of the space on the inner surface of the protection cylinder or the outer surface of the inner cylinder in the double cylinder. Forming a guide path for raising the air facing the water treatment contact material between the water treatment contact material and the outer surface of the inner cylinder or between the water treatment contact material and the inner surface of the protective cylinder; A double-cylinder is provided with an air-ejecting portion for emitting air into the double-cylinder to generate buoyancy, and the double-cylinder is connected to a riverbed by a flexible member and supported in a state of being immersed in water. The point is that a plurality of air overflow ports are opened at equal intervals on the same circumference on the lower end side of the inner cylinder. To. According to a fourth aspect of the present invention, the protective cylinder according to the second or third aspect is used as an intermediate cylinder by supporting the outer cylinder on the outer periphery thereof through a space, and the upper and lower ends of the outer cylinder are respectively located near the upper and lower ends of the intermediate cylinder. The gist is that it was located at According to a fifth aspect of the present invention, the protective cylinder according to the second aspect is used as an intermediate cylinder by supporting the outer cylinder on the outer periphery thereof through a space, and the upper and lower ends of the outer cylinder are respectively located near the upper and lower ends of the intermediate cylinder. In addition, the gist is that a weight is provided at a lower part of the outer cylinder in place of the weight provided at a lower part of the double cylinder. A sixth aspect of the present invention is characterized in that the outer cylinder according to the fourth or fifth aspect is configured to be capable of adjusting the vertical position with respect to the protective cylinder. Claim 7 is Claim 2
The gist is that the protective cylinder according to any one of the above items 6 to 6 is configured to be able to adjust the vertical position with respect to the inner cylinder. An eighth aspect of the present invention is that the inner cylinder according to any one of the second to seventh aspects does not have the air overflow port.

According to the above technical means, the present invention has the following effects. (Claim 1) The entire surface of the water treatment contact material is floated by causing the air ejected from the air ejection portion to come into contact with the water treatment contact material entirely in a protective cylinder not affected by the water flow of the river. Activates the growth of microorganisms attached to the soil and the oxidative decomposition of organic substances by the microorganisms. Further, the air floating on the air rising guideway generates an upward flow of water, and this upward flow sucks up water from the lower end of the protective cylinder and discharges the water from the upper end of the protective cylinder. (Claim 2) The air ejected from the air ejection portion is accumulated in the inner cylinder to generate buoyancy, thereby reducing the weight of the entire water purification device in water, and the buoyancy and the weight are each a double cylinder. It acts as an upward force and a downward force at the top and bottom, and holds the double cylinder vertically against the water flow of the river. Furthermore,
At the lower end side of the inner cylinder, multiple air outlets are opened at equal intervals on the same circumference, so that the air in the inner cylinder overflows from the entire circumference of the inner cylinder evenly, and the overflowed air is The ascending guideway floats while being entirely in contact with the contact material for water treatment, thereby activating the growth of microorganisms attached to the entire contact material for water treatment and the oxidative decomposition of organic substances by the microorganisms. In addition, the air that floats on the air-raising guideway generates a rising flow of water, and the rising flow sucks water from the lower end of the double cylinder and discharges the water from the upper end of the double cylinder. Furthermore, if the air supply is increased beyond the flow rate of the air that overflows from the air overflow, the air also overflows from the opening at the lower end of the inner cylinder. The overflowing air is energized to increase the upward flow of the water. (Claim 3) When air is continuously supplied, air accumulates in the inner cylinder, and the buoyancy of the air chamber causes the double cylinder to stand upright and to be held vertically. Furthermore, since multiple air outlets are opened at the lower end of the inner cylinder at equal intervals on the same circumference, the air in the inner cylinder overflows evenly from the entire circumference of the inner cylinder. Since the air-raising guideway floats while contacting the entire contact member for water treatment, the growth of microorganisms attached to the entire contact member for water treatment and the oxidative decomposition of organic substances by the microorganisms are activated. In addition, the air that floats on the air-raising guideway generates a rising flow of water, and the rising flow sucks water from the lower end of the double cylinder and discharges the water from the upper end of the double cylinder. Furthermore, if the air supply is increased beyond the flow rate of the air that overflows from the air overflow, the air also overflows from the opening at the lower end of the inner cylinder. The overflowing air is energized to increase the flow of the upward flow.
Also, when the supply of air is stopped, the air overflows from the opening at the lower end of the inner cylinder when the double cylinder tilts due to the power of river water,
With reduced buoyancy, the double cylinder falls down. (4) Since a part of the water between the intermediate cylinder and the outer cylinder at the lower end side of the water purification device is drawn into the air rising guideway together with the river water outside the apparatus, the intermediate cylinder and the outer cylinder are separated from each other. A downward flow is generated in the space between them. By this downward flow, on the upper end side of the water purification device, the river water outside the device is drawn into the space between the intermediate cylinder and the outer cylinder together with a part of the water flowing out from the air ascending guideway. Therefore, the water purification device raises the bottom water of the river to the upper layer by the guide path for air rise, and at the same time, lowers the upper water of the river to the lower layer by the space between the intermediate cylinder and the outer cylinder. (Claim 5) By providing a weight at the lower part of the outer cylinder in place of the weight at the lower part of the double cylinder, the downward flow generated in the space between the intermediate cylinder and the outer cylinder or the downward flow from the space The flow of water flowing around the air ascending guideway is not obstructed by the weight. (Claim 6) By adjusting the vertical position of the outer cylinder with respect to the protective cylinder used as the intermediate cylinder, the upper and lower openings between the inner cylinder and the protective cylinder, and the gap between the protective cylinder and the outer cylinder. Since the positional relationship between the upper and lower ends and the opening is variable at each of the upper and lower ends, the flow force of the downward flow generated between the protective cylinder and the outer cylinder is adjusted. (Claim 7) Since the height of the protection cylinder is adjustable with respect to the inner cylinder, the water depth of the upper and lower ends of the protection cylinder can be adjusted. (Claim 8) By causing air accumulated in the inner cylinder to overflow from the opening at the lowermost end of the inner cylinder, the overflowed air is
Since the whole amount floats from the position near the lower end opening of the protection cylinder, the water suction force at the lower end opening of the protection cylinder increases,
Increases the flow of water generated in the air rise guideway.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 4 show an embodiment of the water purification device according to the present invention. Water purification device 10
As shown in FIG. 1, a double cylinder 3 vertically suspended by water holding means 4 in water in a river A, a contact material 1 for water treatment accommodated in the double cylinder 3, An air ejection portion 15 fixed to a lower portion in the double cylinder 3 is provided, and a plurality of air ejection portions 15 are provided in the river A as shown in FIG.

The double cylinder 3 has a double structure in which an inner cylinder 23 is fixed in a protective cylinder 13 with a plurality of bolts 7 made of a corrosion-resistant material, with a space secured between the two cylinders. By loosening the plurality of bolts 7, the vertical position of the protection cylinder 13 can be adjusted. The protective cylinder 13 is a resin pipe obtained by cutting a hard vinyl chloride pipe or the like into an elongated shape, and has female screw holes 13a which are screwed with the plurality of bolts 7 at upper and lower ends of a peripheral wall thereof. Are formed in the shape of a plurality of holes at predetermined intervals on the same circumference.

The inner cylinder 23 is formed by cutting a resin pipe such as a hard vinyl chloride pipe having a diameter smaller than that of the protection cylinder 13 into a length substantially equal to that of the protection cylinder 13, and inserting a blind plug 23 a of the same material into the upper end opening. It is configured by bonding. This inner cylinder 23 is a protective cylinder 13
The upper and lower ends of the outer peripheral surface are fixed by being pressed by the tip surfaces of a plurality of bolts 7 in a state where the cylindrical cores are aligned and the upper end is slightly protruded. 7 is provided with a contact material 1 for water treatment.
Are provided in a ring shape. The inside is used as an air chamber 35a for storing air 35 ejected from an air ejection unit 15 described later, and a plurality of air overflow ports 23b are formed at equal intervals on the same circumference at the lower end of the peripheral wall. The air 35 in the air chamber 35a is supplied to the air outlet 23b.
And is sprayed onto the inner surface of the contact material 1 for water treatment.

The contact material 1 for water treatment is a well-known material which is a fibrous member such as a non-woven fabric or a cloth, and which purifies water by oxidatively decomposing organic substances in contact with microorganisms attached to the surface thereof. The contact member 1 for water treatment comprises a protective cylinder 13 and an inner cylinder 23.
And a fibrous member such as a nonwoven fabric or cloth thinner than the width dimension H of the space secured between
When the vertical position of the protective cylinder 13 is adjusted, the upper and lower bolts 7 are supported by the upper and lower bolts 7 without being bonded to the inner cylinder 23. The protection cylinder 13 does not hinder the vertical movement of the protection cylinder 13 with respect to the inner cylinder 23, and the surface thereof faces the air rising guide path 6 that is left between the protection cylinder 13 and the inner peripheral surface. In addition, the contact member 1 for water treatment may be provided on the inner peripheral surface of the protective cylinder 13 so that the air-elevating guide path 6 is formed between the contact member 1 and the outer peripheral surface of the inner cylinder 23. Cylinder 2
Since the vertical movement of the protective cylinder 13 with respect to the third cylinder 3 is not hindered, the protective cylinder 13 may be adhered to the inner peripheral surface of the protective cylinder 13.

The air rising guideway 6 faces the entire outer peripheral surface of the water treatment contact member 1 and is continuous from the lower end opening portion to the upper end opening portion of the protective cylinder 13.
3b, the air overflow port 23b, and the air 35 overflowing from the lower end of the inner cylinder 23 become a passage for floating.

The air ejection portion 15 is a spherical porous member that ejects a large amount of air bubbles to increase dissolved oxygen in water, and is a well-known technology generally commercially available as an air stone. The air ejection portion 15 is provided with a through hole 23c formed at the center of the blind plug 23a of the inner cylinder 23.
The air tube 25 is made of a flexible tube material such as a soft vinyl chloride tube and the like. The air tube 25 is provided at an end portion (one end side) of the air tube 25, and is provided in a protruding shape near the lower end of the inner cylinder 23. An air tube 2 is attached to the C-shaped holding portion 33c at the tip of the fixture 33.
5 is positioned slightly below the inner cylinder 23 by holding the middle part of the inner cylinder 5. In addition, this air ejection part 15
Is an air compressor 45 connected to the other end of the air pipe 25.
The air 35 is blown into the inner cylinder 23 by the operation of (see FIG. 4). In addition, the flow rate of the air jetted from the air jetting section 15 can be changed by adjusting the discharge pressure of the air compressor 45.

The holding means 4 includes a locking member 84 such as an eyebolt attached to the peripheral end of the upper surface of the blind plug 23a at equal intervals.
, A similar locking member 84 attached to a raft 64 connected to the river bank, a string-shaped hanging member 54 hooked between the locking members 84, 84, and an outer peripheral surface of the protective cylinder 13. An annular weight 74 fixed to the lower side is provided. In addition, double cylinder 3
The member on which is suspended is not limited to the raft 64, and may be a fixture (not shown) fixed to the riverbank.

Next, the operation of the water purification apparatus 10 having the above configuration will be described. The air 35 jetted from the air jetting section 15 forms an air chamber 35a in the inner cylinder 23, and the inner cylinder 23
When the water surface W, which is the boundary between the air chamber 35a and the water, is located below the air overflow 23b, the air 35 overflows from the air overflow 23b, and the overflowed air 35 becomes the contact material for water treatment. 1 is evenly sprayed in the circumferential direction on the lower inner peripheral surface, and floats while passing through the inside of the contact member 1 for water treatment and the inside of the guide path 6 for air rise. Further, when the air flow supplied from the air compressor 45 is set to be larger than the air flow overflowing from the plurality of air outlets 23b in accordance with the water quality condition of the river A, the water surface W further falls and the inner cylinder 23 The air 35 also overflows from the lower end opening portion, and the air 35 also floats in the air ascending guide path 6 and urges the air 35 which overflows from the air overflow port 23b to increase the flow of the upward flow of water. .

The air 35 overflowed by the above operation
However, by floating on the air ascending guideway 6, aeration concentrated in the air ascending guideway 6 is performed to increase dissolved oxygen, and in the entire water treatment contact material 1,
The growth of the attached microorganisms and the oxidative decomposition of organic substances by the microorganisms are activated to purify the water quality, and at the same time, an upward flow of water is generated in the air ascending guideway 6. Water is sucked up from the open part, and the water is discharged from the upper end open part of the double cylinder 3 to promote the generation of a circulating flow in the river A, and suppress the proliferation and accumulation of phytoplankton caused by the stagnation of the river water. In the long term, improve sediment quality and purify water quality.

Further, depending on the condition of the river A, the water depth of the open portions at the upper and lower ends of the protection cylinder 13 can be adjusted by loosening the bolts 7. By separating the open part at the lower end of the cylinder 13 from the riverbed, it is possible to prevent the water treatment contact material 1 from being clogged with the sucked sediment, and to distribute the water quality of the upper and lower layer water of the river, the state of occurrence of phytoplankton, The opening at the upper and lower ends of the protective cylinder 13 can be adjusted to an optimum water depth according to the state of the river, such as the state of mud accumulation.

Further, the contact material for water treatment 1 which has been used for a long time
Is clogged with deposits such as inorganic substances, the discharge pressure of the air compressor 45 is adjusted and the air
The flow rate of the air 35 spouted from the inner cylinder 23 is increased, whereby the attached matter of the water treatment contact material 1 can be washed by the large amount of air 35 overflowing from the lower end of the inner cylinder 23.

The water purification apparatus 10 according to the present embodiment
Is suspended from one raft 64 as shown in FIG. 4, but the weight in water is reduced by the buoyancy of the air chamber 35 a formed in the inner cylinder 23, A large number of water purification devices 10 can be hung by a small raft 64 having low buoyancy, and the double cylinder 3 has a holding force to maintain the upright state by the air chamber 35a and the weight 74. The tube 3 is prevented from being hung in an inclined manner, and the protection tube 1 is always
3 Make the suction part at the lower end close to the riverbed B and protect the cylinder 1
(3) The upper discharge section is maintained near the surface layer to promote circulation of the upper and lower layer water.

Next, a water purification apparatus of another embodiment in which the double cylinder 3 is held from below will be described.
As shown in FIG. 2, the water purification device 10 ′ of this embodiment has:
A double cylinder 3 held vertically in the water in the river A from the river bottom B by the holding means 4 ′; a contact material 1 for water treatment accommodated in the double cylinder 3; And a plurality of air ejection portions 15 fixed to the lower part of the river A, as shown in FIG. Note that the configuration other than the holding unit 4 'and the air ejection unit 15 is the same as that of the above-described embodiment, and thus the same reference numerals are given and the description is omitted.

The air ejection portion 15 is the same as the air stone used in the above-described embodiment, and is fixed to a flexible member 34 as a holding means 4 'described later with a fastening member 34a such as a nylon band. The air tube 25 is provided at an opening on one end side thereof. In addition, this air ejection part 15
As shown in FIG. 2, it is disposed slightly lower than the lower end of the inner cylinder 23, crawls on the riverbed B, and the other end is connected to an air compressor 45 (see FIG. 5) installed on the riverbank. By supplying air from the air compressor to the air pipe 25, air is blown into the inner cylinder 23. In addition, the flow rate of the air jetted from the air jetting section 15 can be changed by adjusting the discharge pressure of the air compressor 45.

The holding means 4 'is a flexible member 34 made of a string or a corrosion-resistant chain, etc., and is engaged with locking holes 23d, 23d formed so as to face each other at the lower end of the peripheral wall of the inner cylinder 23. One end is attached to the base 24 at the center of the long shaft 14 that is fitted and fixed, and the other end is attached to a fixing rod 44 laid on the riverbed B.

Next, the operation of the water purification apparatus 10 'of this embodiment will be described. In a state where the air 35 is not supplied, the double cylinder 3 is lying down on the riverbed B with the inner cylinder 23 filled with water. From this state, when the air 35 is supplied from the air ejection part 15 by supplying the air 35 which is larger than the air flow rate at which the air overflow 23b can overflow, the ejection pressure and the flow force of the river water cause the inside of the inner cylinder 23 to change. The air 35 is pushed into the air chamber 35a to form an air chamber 35a. The buoyancy of the air chamber 35a gradually raises the double cylinder 3, and the buoyancy of the air chamber 35a is doubled against the power of the water flow a of the river A. The cylinder 3 is held vertically. When the air chamber 35a is positioned below the water surface W below the air overflow port 23b, the air 35 overflows from the air overflow port 23b. It is evenly sprayed on the peripheral surface in the circumferential direction, and floats while passing through the inside of the water treatment contact material 1 and the inside of the air rising guide path 6. Then, the air flow supplied by the air compressor 45 is adjusted so that the water surface W is located between the air overflow 23b and the lower end of the inner cylinder 23, and the overflow of the air 35 from the air overflow 23b is continued. I have.

The air flow supplied by the air compressor 45 is increased according to the water quality of the river A, and the water surface W is further lowered so that the air 35 overflows from the lower end of the inner cylinder 23. Well. As a result, the air 35 that has overflowed from the lower end of the inner cylinder 23 also floats in the air ascending guide path 6 and urges the air 35 that has overflowed from the air overflow port 23b to increase the upward flow of water.

The river A rises due to heavy rain, etc.
When there is a possibility that the water 35 may obstruct the water flow a, the supply of the air 35 is stopped, so that when the double cylinder 3 is inclined by the force of the river water, the air 35 overflows from the opening at the lower end of the inner cylinder to reduce the buoyancy. The double cylinder 3 falls down (see FIG. 3). When the river A returns to the normal state and the double cylinder 3 is erected again, the air 35 may be supplied again as described above.

In the water purification apparatus 10 'of this embodiment, the operation for purifying the water quality, the operation for adjusting the vertical position of the protective tube 13, and the operation for cleaning the contact material 1 for water treatment. Needless to say, the same effect as in the embodiment in which the double cylinder 3 is suspended is provided.

In the above two embodiments, the inner cylinder 23 may not be provided with the air overflow port 23b. In this case, the entire amount of the air 35 accumulated in the inner cylinder 23 is reduced by the protection cylinder 3 Rises from a position close to the lower end opening of the protective cylinder 3, the water suction force at the lower end opening of the protective cylinder 3 is increased, and the flow of water generated in the air ascending guideway 6 is increased. It is effective in improving water quality and promoting river water circulation. In each of the above embodiments, the double cylinder 3 including the protective cylinder 13 and the inner cylinder 23 is configured.
The water treatment contact member 1 may be configured to be accommodated in the protection tube 13 formed of a single tube. In this case, for example, the water treatment contact material 1 is bonded to the inner peripheral surface of the protection tube 13 formed of a single tube. Then, a stand-shaped support base may be fixed to the riverbed B, and the protective cylinder 13 and the air ejection unit 15 may be fixed above the support base. Thereby, similarly to the embodiment having the double cylinder 3, the function of purifying water and the function of cleaning the contact material for water treatment 1 are exhibited.

Next, the water purification apparatus 20 shown in FIG. 6 will be described. The water purification device 20 of this embodiment supports the outer cylinder 43 via the space on the outer periphery of the protection cylinder 13 in the water purification device 10 shown in FIG. Used as an intermediate tube 13 'between
The water purification device 10 is configured in a triple cylinder shape, and the weight 74 ′ is provided below the outer peripheral surface of the outer cylinder 43 instead of the weight 74 below the outer peripheral surface of the protective cylinder 13 in the water purification device 10. In addition, the intermediate cylinder 1
Since the internal structure of the 3 ′ and the intermediate tube 13 ′, the holding means 4 and the like have the same structure as the water purification device 10, the same portions are denoted by the same reference numerals and the repeated description will be omitted.

The outer tube 43 is a resin tube obtained by cutting a hard vinyl chloride tube or the like into a long shape, and does not interfere with the bolts 7 screwed to the intermediate tube 13 'on the upper and lower sides of the peripheral wall. At a position, a plurality of female screw holes 43a are formed at predetermined intervals on the same circumference so as to penetrate therethrough. And
The outer cylinder 43 is screwed with a bolt 8 made of a corrosion-resistant material in each of the female screw holes 43a, and is fixed in a state where a space is secured between the outer cylinder 43 and the intermediate cylinder 13 'by tightening the bolts 8. The vertical position with respect to the intermediate cylinder 13 ′ can be adjusted by the loosening of the bolt 8.

The weight 74 ′ is not obstructed by the water purification device 20 according to the present embodiment, because the downflow of the river water is generated in the space between the intermediate cylinder 13 ′ and the outer cylinder 43 in the water purification device 20. The diameter of the water purification device 10 is larger than the weight 74 and is fixed to the lower end of the outer cylinder 43.

According to the water purification device 20,
As shown in FIG. 6, a part of the water between the intermediate cylinder 13 ′ and the outer cylinder 43 at the lower end side of the device 20 is drawn into the air ascending guideway 6 together with the river water outside the device 20. A downward flow is generated in the space between the cylinder 13 'and the outer cylinder 43. Then, at the upper end side of the apparatus 20, the river water outside the apparatus 20 together with a part of the water flowing out from the air ascending guide path 6 is caused by the descending flow, so that the intermediate cylinder 13 'and the outer cylinder 4 are discharged.
It is drawn into the space between three.

Accordingly, the water purification device 20 raises the bottom water of the river A to the upper layer by the air ascending guideway 6 and at the same time, raises the upper water of the river A by the space between the intermediate tube 13 ′ and the outer tube 43. In order to move the river A down,
Further promote the circulation of top and bottom water.

In addition, the above-mentioned triple cylindrical structure has
The water purification apparatus 10 'which is held vertically from the riverbed B is also possible, and a water purification apparatus 20' in this case is illustrated in FIG. This water purification device 20 '
The protective tube 13 in the water purification device 10 'is an intermediate tube 13', and the outer tube 43 is supported on the outer periphery of the intermediate tube 13 'via a space. The internal structure of the intermediate cylinder 13 'and the intermediate cylinder 13', the holding means 4 'and the like are the same as those of the water purification device 10', and the structure for supporting the outer cylinder 43 on the intermediate cylinder 13 'is a water purification device. Because it is the same as 10 '
The same reference numerals are given to those components, and redundant description will be omitted.

According to the water purification device 20 ', the operation and effect of the water purification device 10' are provided.
As in the water purification device 20, the intermediate cylinder 13 'and the outer cylinder 4
The space between 3 lowers the upper water of river A to the lower layer, so that the circulation of the upper water of river A is further promoted.

[0034]

Since the present invention is configured as described above, it has the following effects. (Claim 1) By intensive aeration in a region partitioned by a protective cylinder, the concentration of dissolved oxygen in the protective cylinder can be significantly increased, and the entire water treatment contact material can be maintained in an aerobic state. Therefore, not only does the anaerobic treatment at the lower part of the contact material for water treatment, which has been a problem in the past, occur, but also the growth of the attached microorganisms and the oxidative decomposition of organic substances by the microorganisms affect the entire contact material for water treatment. It is activated efficiently
In addition, the bottom water of the river is sucked in from the opening at the bottom of the protection cylinder and discharged from the opening at the top of the protection cylinder, promoting the circulation of the bottom water of the river, and the phytoplankton produced by the accumulation of river water. It is possible to provide a water purification apparatus having excellent water purification ability that suppresses multiplication and accumulation and also has an effect of improving bottom quality in the long term. In addition, if the water treatment contact material is clogged with deposits due to long-term use, the air flow rate can be increased to clean the water treatment contact material deposits, eliminating the need for manual cleaning work. In addition, the work time and labor costs can be greatly reduced. (Claim 2) Further, a double cylinder is constituted by the protective cylinder and the inner cylinder,
By holding the double cylinder vertically with the buoyancy of the air in the inner cylinder and the weight provided at the bottom, the weight of the whole water purification device in water can be reduced by the buoyancy of the air in the inner cylinder. By simplifying the support structure of the water purification device, for example, by reducing the size of the raft and eliminating the need for a firm and rigid fixture, the equipment cost of the entire device can be significantly reduced. Further, by increasing the supply amount of air and allowing the air to overflow from the opening at the lower end of the inner cylinder, it is possible to enhance the effect of improving the water quality, particularly by promoting the circulation of river water. (Claim 3) Since the double cylinder composed of the protective cylinder and the inner cylinder is connected to the riverbed by a flexible member, the buoyancy of the air supplied into the inner cylinder holds the cylinder vertically. When the river is in a normal state, air is supplied to purify the water while maintaining the double cylinder in a vertical position.When water is increased during heavy rainfall or rainfall, if the air supply is stopped, the air in the air chamber is affected by the water flow. Since the double cylinder falls down as soon as the water is discharged to the outside, it is possible to provide a water purification device that does not hinder the flow of the river and avoids the danger of flooding. (Claim 4) Moreover, since the protective cylinder is used as an intermediate cylinder and a space is provided between the intermediate cylinder and the outer cylinder, the space lowers the upper layer water to the lower layer. The circulation can be further promoted, and the water purification effect such as suppression of phytoplankton multiplication and accumulation and improvement of sediment can be further improved. (Claim 5) By providing a weight at the lower part of the outer periphery of the outer cylinder in place of the weight at the lower part of the double cylinder, the downward flow in the space between the intermediate cylinder and the outer cylinder, or from the lower side of the space, The flow of water flowing around the air ascending guideway is not obstructed by obstacles. Therefore, the upper and lower layer water of the river is efficiently circulated, and the water purification effect is further improved. (Claim 6) In addition, by configuring the outer cylinder to be vertically adjustable with respect to the protection cylinder (intermediate cylinder), the flow force of the downward flow generated between the protection cylinder and the outer cylinder can be adjusted. Therefore, the circulation action of the upper bottom water can be adjusted according to the river conditions such as the flow velocity of the river, the water quality distribution of the upper bottom water, and the like. (Claim 7) In addition, since the height of the protection cylinder can be adjusted with respect to the inner cylinder in the vertical direction and the water depth of the upper and lower ends of the protection cylinder can be adjusted, the state of the sediment on the river bottom, the quality of distribution,
Optimal water purification can be performed according to river conditions such as the state of phytoplankton generation. (Claim 8) In addition, the inner cylinder does not have the air overflow port, so that the water purification is particularly effective in improving the water quality of the river bottom layer and promoting the circulation of the river water and further reducing the processing cost. Equipment can be provided.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing an embodiment of a water purification device according to the present invention.

FIG. 2 is a longitudinal sectional view showing another embodiment of the water purification device according to the present invention.

FIG. 3 is a longitudinal sectional view showing the water purification apparatus in FIG. 2 in a laid state in a river.

FIG. 4 is a front view showing one usage example of the water purification device in FIG. 1;

FIG. 5 is a front view showing one usage example of the water purification device in FIG. 2;

FIG. 6 is a longitudinal sectional view showing another embodiment of the water purification device according to the present invention.

FIG. 7 is a longitudinal sectional view showing another embodiment of the water purification device according to the present invention.

8 (a) is a side view, and FIG. 8 (b) is a cross-sectional view taken along line (1)-(1), showing an example of a conventional water purification device.

9A and 9B show another example of a conventional water purification device, in which FIG. 9A is a side view, and FIG. 9B is a sectional view taken along line (2)-(2).

[Explanation of symbols]

1: contact material for water treatment 3: double cylinder 4, 4 ': holding means 6: guide path for air rise 10, 10': water purification device 13 (13 '):
Protective cylinder (intermediate cylinder) 15: Air jetting part 20, 20 ':
Water purification device 23: inner cylinder 23b: air overflow 43: outer cylinder 74, 74 ':
Weight

Claims (8)

[Claims] 1. A water treatment contact material is arranged in a vertically open protective cylinder with its surface facing an air rising guideway that secures the upper and lower opening inside the protective cylinder and holding the protective cylinder. A water purification apparatus characterized in that the air purifier is held vertically in water by water and an air ejection section is provided below the air-elevating guideway. 2. A double cylinder is supported in a protective cylinder having upper and lower ends open in a state in which a space is secured between the two cylinders in such a manner that the upper end is closed and the lower end is opened in a manner aligned with the core of the inner cylinder. In this double cylinder, the lower end of the inner cylinder is positioned above the lower end of the protective cylinder, and the double cylinder is submerged in a raft provided on the water surface or a fixture provided on the river bank via a hanging member. To hang,
A water treatment contact material having a thickness smaller than the width of the space is provided on the inner surface or outer surface of the protection cylinder in the double cylinder, and between the water treatment contact material and the outer surface of the inner cylinder or the water treatment contact material. Forming an air-raising guideway facing the water treatment contact material between the inner surface of the protective cylinder and an air jetting portion for jetting air into the inner cylinder to generate buoyancy in the double cylinder. ,
At the bottom of the double cylinder is provided a weight that makes the double cylinder vertical,
A water purification apparatus characterized in that a plurality of air overflow ports are opened at equal intervals on the same circumference at the lower end side of the inner cylinder. 3. A double cylinder is provided in a protective cylinder having upper and lower ends opened, supporting the inner cylinder having the upper end closed and the lower end opened in a state where a space is secured between the two cylinders. In this double cylinder, the lower end of the inner cylinder is located above the lower end of the protection cylinder, and a water treatment contact material thinner than the width dimension of the space on the inner surface of the protection cylinder or the outer surface of the inner cylinder in the double cylinder. Forming a guide path for raising the air facing the water treatment contact material between the water treatment contact material and the outer surface of the inner cylinder or between the water treatment contact material and the inner surface of the protective cylinder; A double-cylinder is provided with an air-ejecting portion for emitting air into the double-cylinder to generate buoyancy, and the double-cylinder is connected to a riverbed by a flexible member and supported in a state of being immersed in water. , Characterized by a plurality of air overflow openings at equal intervals on the same circumference at the lower end of the inner cylinder Water purification equipment. 4. The protective cylinder is used as an intermediate cylinder by supporting an outer cylinder via a space on its outer periphery, and the upper and lower ends of the outer cylinder are respectively located near the upper and lower ends of the intermediate cylinder. The water purification device according to claim 2 or 3, wherein 5. The protective cylinder is used as an intermediate cylinder by supporting the outer cylinder via a space on the outer periphery thereof, and the upper and lower ends of the outer cylinder are respectively located near the upper and lower ends of the intermediate cylinder, respectively. The water purification device according to claim 2, wherein a weight is provided at a lower part of the outer periphery of the outer cylinder in place of the weight provided at a lower part of the double cylinder. 6. The water purification apparatus according to claim 4, wherein the outer cylinder is configured to be vertically adjustable with respect to the protective cylinder. 7. The water purification apparatus according to claim 2, wherein the protection cylinder is configured to be vertically adjustable with respect to the inner cylinder. 8. The air conditioner according to claim 2, wherein the inner cylinder does not have the air overflow port.
A water purification device according to any one of the preceding claims.