JP2002028406A - Water cleaning device composed of plural water cleaning units, operation method thereof and water cleaning unit - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a water cleaning device composed of plural water cleaning units capable of performing water cleaning operation continuously while keeping the water cleaning performance by adequately cleaning and regenerating the water cleaning units, the operation method thereof and the water cleaning unit. SOLUTION: The water cleaning unit 6a is carried to the water cleaning device 11 and cleaned. A cylinder is pushed out by actuating a water cleaning unit moving means 10 to push the water cleaning unit group 7 to move to the upstream side. The water cleaning unit 6a completing the water cleaning is carried to the last end of the water cleaning unit group 7 and is taken down in a water passage 3 to be mounted. The continuous operation is performed by repeating the procedure.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water purification unit applied to an existing or new water purification plant and a method of operating the same, and more particularly, to a plurality of water purification units which are detachable from a water channel or the like. TECHNICAL FIELD The present invention relates to a water purification apparatus including a plurality of water purification units capable of continuously performing a water purification operation even in a washing process for maintaining the performance thereof, a method of operating the same, and a water purification unit.

[0002]

2. Description of the Related Art In water purification plants, in recent years, water purification treatment such as filtration treatment and deodorization treatment of water source water, which has been increasingly polluted due to eutrophication of rivers and lakes, has become increasingly important. For this reason, there has been a demand for advanced water purification treatment such as biological treatment, filtration treatment with a filter material such as sand, membrane treatment, and deodorization treatment with an adsorbent for the treated water that has been coagulated and settled. The water purification treatment includes treatment methods such as coagulation sedimentation and membrane treatment. In the present invention, water purification treatment using a filtering material such as activated carbon, sand, and anthracite, which is applied to an existing water purification plant and a newly constructed water purification plant, is targeted. In conventional water treatment plants, a single or multi-stage filter tank or filtration pond is filled with sand, activated carbon or a filter material called anthracite, and sand or gravel is spread under the filter material so that the filter material does not flow out. What they support is common. And
As the filtration process proceeds, impurities such as suspended substances trapped by the filter media increase the filtration resistance and deteriorate the quality of the filtered water. Therefore, a backwashing device for cleaning the filter media is incorporated.

[0003] There are various types of filter materials for water purification. Hereinafter, the case where activated carbon is used as the filter material will be described. When activated carbon is used, the same equipment configuration is used to exhibit a filtering action and an adsorption action. Activated carbon includes powdered activated carbon and granular activated carbon. Powdered activated carbon is used in the form of a slurry with stirring, but the cost is high because no regeneration technology has been established. On the other hand, granular activated carbon has advantages in that it is easy to handle and can be washed and regenerated and reused. There are various types of water purification equipment using activated carbon, but in general, a sand or gravel layer or a stainless steel plate support is provided at the bottom of a cylindrical vertical tank or a flat water tank,
Activated carbon is filled in the upper part, treated water is passed vertically upward or downward, and impurities and the like are trapped and adsorbed by activated carbon for purification. If the filtration resistance of the water purification tank increases and the quality of the filtered water deteriorates during the water-passing operation for these water purifications, the flow of the water through the water purification tank is stopped, the washing water flows from the opposite direction, and the filtration material is washed to perform filtration. Restores performance. Further, in order to recover the adsorption performance of activated carbon, a regeneration treatment for baking at a high temperature of several hundred degrees to restore the adsorption performance may be performed, or the activated carbon may be replaced with a new one. When regenerating activated carbon with reduced adsorption performance or replacing it with new one, remove the activated carbon with reduced performance from the bottom and regenerate the adsorption performance by regeneration treatment such as dry heating method, and then regenerate activated carbon or new one. From the upper inlet of the water purifier and reused.

[0004] In a single water purifying tank, the water purifying operation is temporarily suspended when maintenance work such as washing, regeneration, and replacement of a new product is performed. On the other hand, when a multi-stage system is used, the water supply is stopped only in the water purifying tank that performs the above-mentioned maintenance work, and the water purifying operation can be continuously performed by passing the water through another water purifying tank. For example, in the multi-stage system, the first water purification tank is the most easily contaminated and needs to be frequently cleaned, and the later the stage, the longer the cleaning interval. Therefore, by sequentially switching the order of water flow through each water purification tank so that the last flow of treated water to the water purification tank immediately after cleaning is performed, the contamination of each water purification tank is not biased, and the cleaning interval can be made substantially constant. The water purification operation can be performed efficiently.

Japanese Patent Application Laid-Open No. 7-60241 discloses a method of operating a multi-stage upward-flow activated carbon adsorption tower device. In this conventional example, as shown in FIG. 10, four activated carbon adsorption towers are arranged, three of which are arranged in series, and the remaining towers are used as spare towers. The treatment liquid is passed through the third column to purify the water, and the fourth column is used as a spare. If the activated carbon of the first column is deteriorated and the adsorption capacity is reduced, the treatment of the first column is stopped and the spare fourth column is used. Is started, the second to fourth columns are connected in series, and water is passed from the second column. Then, the activated carbon in the first column is washed, replaced with a new one, or regenerated, and is reserved. Hereinafter, when the activated carbon in the second column is deteriorated, the third column to the first column are connected in series, water is passed from the third column, and this operation is repeated. This multi-stage adsorption tower is provided with a large number of valves because the processing of each tower is stopped and the connection is switched by selectively opening and closing bypass pipes and valves. In this example, only 12 switching valves are provided excluding the activated carbon discharging valve. If the above-described multi-stage upward flow activated carbon adsorption tower is applied to a water purification device mainly comprising filtration, continuous water purification operation can be performed while efficiently cleaning and maintaining each water purification tank.

[0006]

In the water purifier according to the prior art, since the filter material filled in a vertical tank or a flat water tank has a structure of sand or a gravel layer and a lower collecting tank, impurities adhere to the filter material. If the dirt gets worse, it is necessary to add pipes, pumps, valves and the like for backwashing the washing water in order to perform washing. In addition, when replacing with a new or regenerated filtered or adsorbent material, it is necessary to take out the old water purification material from the water purification tank and re-inject it, and there has been a problem that the operation is complicated and costs increase. In particular, in the case of using granular activated carbon, there is also a problem that the yield is reduced due to outflow due to powdering at the time of taking in and out. In addition, the multi-stage adsorption tower as shown in the above-mentioned Japanese Patent Application Laid-Open No. 7-60241 is replaced with a water purifying tank, and the order of flow of each water purifying tank is sequentially switched so that the flow of the treated water to the water purifying tank immediately after washing becomes the last. In this case, the water purification operation can be performed efficiently. But,
It is necessary to install a large number of bypass pipes and switching valves to perform switching operation. For this reason, the equipment cost is increased, and there is also a problem that a complicated valve operation is required at the time of the water purification operation and the washing and regeneration treatment of the activated carbon.

[0007] The present invention solves the above-mentioned problems of the prior art, and makes it possible to easily attach and detach a filter medium to a water channel or a pond for water purification, and to appropriately clean and regenerate the water purification unit while maintaining the water purification performance. It is another object of the present invention to provide a water purification device including a plurality of water purification units, a method of operating the same, and a water purification unit that enable continuous water purification operation.

[0008]

<Invention of a water purification device comprising a plurality of water purification units according to claim 1> In a water purification device using a filtering material provided in a water channel or a pond of a water purification plant, the water purification device is treated water. Detachable water purification units that are installed side by side in the water flow direction, the cleaning unit of the water purification unit, and the water purification unit with reduced purification capacity are removed, transported to the cleaning device, and transported back after cleaning. And transport means to be installed again.

(Function) The filter material for water purification becomes dirty due to adhesion and adsorption of impurities and organic substances in the treated water, and the water purification performance is degraded. For this reason, the water purification operation is performed while periodically cleaning the filter media and maintaining the performance according to the progress of the dirt. In addition, in the case of activated carbon adsorbent, when the organic matter concentration of the treated water reaches the permissible concentration, it will reach a breakthrough point, and when it can no longer exhibit the water purification function, replace it with a new one, or perform regeneration treatment to restore the function and use it There is a need to. In the case of a conventional water purification tank, in the case of a multi-stage method, since the cleaning treatment of the filter media is performed in the water channel, if continuous water purification operation is to be performed, it is necessary to install a bypass pipe or an opening / closing valve that bypasses the water flow, and the space is required. And large capital investment was required. In the water purification apparatus comprising a plurality of water purification units according to the present invention, the filtration material is manufactured as a removable water purification unit, and a plurality of water purification units are installed in a water channel or a pond, and the water purification unit that requires cleaning (rarely, regeneration) is required. After being sequentially removed from the water channel by the desorption / transportation means, transported to a washing water tank or a regeneration treatment place to perform the cleaning or regeneration treatment, and then re-installed in the water passage.

<Invention of a method for operating a water purification device comprising a plurality of water purification units according to claim 2> In a water purification device using a filtering material provided in a water channel or a pond of a water purification plant, the water purification device has a flowing direction of treated water. It consists of a plurality of detachable water purification units that are installed and arranged in series opposite to each other, and removes the water purification unit with reduced purification ability, transports it to the cleaning device, cleans it, and installs it again. The treatment water can be continuously purified by the water purification unit.

(Operation) In the cleaning (regeneration) step of the water purification unit, the remaining water purification unit of the water purification unit removed for cleaning allows continuous water flow to continue the water purification operation. Also, without installing additional equipment such as bypasses and valves, the water purification unit in the front row is pulled out from the inflow side of the treated water, and during the cleaning or regeneration treatment, the water purification unit in the rear row is moved forward by moving means. , And the extracted water purification unit may be subjected to a cleaning process and reinstalled in the last row.

That is, the water purification unit with the heaviest contamination is extracted, washed or regenerated, and then re-installed in the rear row of the water purification unit with the least contamination. If this means is used, dirt such as impurities adhering to each water purification unit is not biased, and can be leveled and a water purification operation can be performed efficiently. In addition, when a water purification unit is provided in a water channel or a pond of a water purification plant and is arranged facing the flowing direction of the treated water, and a water purification unit is installed, a plurality of water purification units may be arranged in series in the flowing water direction to form a water purification unit group, A plurality of water channels may be formed, and a plurality of water purification units may be arranged in each to form a parallel water purification unit group.

<Invention of a water purification device comprising a plurality of water purification units according to claim 3> A water purification device using a filtering material provided in a water channel or a pond of a water purification plant, wherein the water purification device comprises:
A water purification unit group installation site comprising a plurality of detachable water purification units installed side by side in the flowing direction of the treated water, a cleaning device installation site for cleaning a water purification unit with reduced purification capacity, and the water purification unit installation It is characterized by comprising transport means provided between a place and a washing apparatus installation place, provided with a lifting device for attaching and detaching the water purification unit, and moving means for moving the water purification unit group in a flowing water direction (forward). I do.

<Invention of a method for operating a water purification apparatus comprising a plurality of water purification units according to claim 4> In the water purification apparatus comprising a plurality of water purification units according to claim 3, purification is carried out by a conveying means provided with the lifting device. The water purification unit with reduced capacity is removed and transported to the cleaning device for cleaning. During this time, the remaining water purification unit is moved by the moving means in the flowing direction (front).
Move to the water purification unit after further washing, repeat each step of reverse transport to the water purification unit group installation location and install it again in the last row, sequentially wash each water purification unit, even during each process operation, The remaining water purification unit enables a continuous purification operation of the treated water.

<Invention of a method for operating a water purification apparatus comprising a plurality of water purification units according to claim 5> A transport means having a lifting device for detaching and attaching the water purification unit is provided between a washing device installation location and the water purification device installation location. The present invention is characterized in that a traveling device equipped with an electric hoist is used for a traveling device traveling by a rail or a wire rope installed in the air. According to this means, the degree of freedom regarding the installation of the transport means is increased, which is advantageous when the present invention can be applied to an existing water purification plant.

<Invention of a water purification unit according to claim 6> A water purification unit provided in a water channel or a pond of a water purification plant, wherein a plurality of small holes (a plurality of holes) are formed by alternately stacking metal flat foils and metal corrugated foils. The first metal honeycomb strainer having an appropriate thickness and a second metal honeycomb strainer having the same thickness are opposed to each other, and an appropriate interval is formed therebetween so that a storage portion is formed therebetween. Connected
It is characterized in that the storage unit is configured to store granular activated carbon or another filtering material. (Operation) In this water purification unit, two flat metal foils and a metal corrugated foil are alternately laminated to form a large number of small holes, and a metal honeycomb strainer is used as a supporting material, and two sheets are arranged at intervals.
The storage section between them is filled with granular activated carbon or a filtering material, and the opening ratio of the support material is high, so that the pressure loss can be reduced.

[0017]

Embodiments of the present invention will be described with reference to the drawings. <First Embodiment> FIG. 1 is a perspective view showing an installation state of a water purification unit in a water purification unit installation place in a water purification apparatus according to a first embodiment of the present invention, and FIG. 2 is an example of a water purification unit of the present invention. FIG. 3 is a central vertical cross-sectional view of the water purification unit, FIG. 4 is a partially enlarged front view of a metal honeycomb strainer used in the water purification unit of the same embodiment, and FIG. 5 is the same embodiment. It is a front view showing the state where the water purification unit was suspended by the conveyance means (port type crane) in 1 water purification device.

FIG. 1 shows a basic configuration of a water purification unit installation place 31 in a water purification apparatus 1 of the present invention, in which a plurality of water purification units 6 which are detachable from a water channel of a water purification plant through which treated water flows are connected in series. The water purification unit installation locations 31 are arranged side by side. As described above, when a plurality of water passages are formed and a plurality of water purification unit groups 7 are provided in parallel, a plurality of water purification unit installation locations 11 are provided, but all other configurations are the same. Water purification unit installation place 31
Includes a water channel 3 through which treated water 2 flows, and water purification units 6a, 6b,
6c and 6d are arranged in series so as to be attachable and detachable from the water channel 3 at appropriate intervals. The flowing treated water 2 passes through the filtration unit 5 of each water purification unit, and contaminants are attached to and adsorbed on the filter medium 4 or are decomposed and purified by microorganisms. The water purification units 6a, 6b, 6c, and 6d are water purification unit groups 7
And installed at the water purification unit installation place 31. Reference numeral 12 denotes a rail of a transporting means (a portal crane (not shown)) for extracting the water purification unit and transporting the same to the location of the cleaning device.

The water purification units 6a to 6d used in the present invention
As shown in FIGS. 2 to 4, metal flat foil members 16 and metal corrugated foil members 17 are alternately laminated to form a large number of small holes 18 (openings), and a metal honeycomb having an appropriate width. An outer frame body is provided with a suitable gap so that a strainer 19 and a metal honeycomb strainer 20 having the same configuration as the metal honeycomb strainer 19 face each other with the openings facing each other to form a filtration part 21 (storage part) therebetween. The filter unit 23 is connected to the filter unit 21 and contains a filter medium 23 made of granular activated carbon. The outer frame body 22 has a ceiling plate 24 fixed with bolts 25 and can be removed by removing the bolts 25, so that the filter medium 4 can be replaced. The lifting means 1 is provided above the ceiling plate 24.
A hanging member 26 for hanging a hook or the like is provided. On both upper sides of the water purification unit 6, the water purification unit 6 is provided.
Are provided on the upper part of the side wall of the water channel 3 so as to be supported on the upper part of the wall. The metal honeycomb strainers 19 and 20 forming the filter material storage portion of the water purification unit are formed by alternately laminating a metal foil flat plate member 16 and a metal corrugated foil member 17 having a thickness of about 0.03 to 0.05 mm to form a large number of small holes 4. It was done. The small holes 4 are openings D shown in FIG.
Is about 0.5 to 1.6 mm.

The metal honeycomb strainer is characterized by having an extremely high aperture ratio. Tables 1 and 2 show the opening ratio of the metal honeycomb strainer and the wire mesh. For example, when comparing the two with a mesh size of about 35 and a mesh size of 0.5 mm, the opening rate of the metal honeycomb strainer is 83
33% to 53% for wire mesh with a wire diameter of 0.3 to 0.19 mm
And significantly different. The high aperture ratio has the effect of reducing the pressure loss when disposed facing the flow path of the treated water.

[Table 1]

[Table 2]

FIG. 5 shows the transport means 13 as an example of a portal crane for transporting the water purification unit between the water purification unit installation location 31 and the washing device installation location 11. The portal crane runs on a rail 12 laid along the waterway 3. The portal crane is provided with lifting means 14 composed of a hoist for lifting and purifying the water purification unit 6. The water purification device in the first embodiment is operated as follows.
A water purification unit installation place 31 is provided in a water channel or a pond of a water purification plant, in which a plurality of water purification units 6 are arranged in series facing the flowing direction of the treated water, and the treated water is filtered by the filter material 4 in each water purification unit 6. And purify. Then, the water purification unit 6 whose purification ability has been reduced due to deposits or the like is withdrawn by a transporting means 13 having a lifting means 14 such as a gate crane, transported to a purification apparatus installation location 11 by a rail 12 or the like, washed, and then reversed. It is conveyed and installed again in the water purification unit installation place 31 provided in the waterway or pond. Even during the operation of each of the steps of extracting, transporting, cleaning, reverse transporting, and re-installing the water purification unit 6, the water purification unit 1 continuously performs the purification operation without stopping the treated water by the remaining water purification units 6. It can be carried out.

Since the water purification unit 6 in the front row is the most easily contaminated, if the water purification unit 6a is extracted and cleaned and then reinstalled at the original position, the cleaning pitch of the water purification unit 6a in the front row is changed to another. It needs to be shorter (frequently) than the water purification unit. In order to equalize the cleaning pitch of each water purification unit 6, the water purification unit 6 in the front row is required.
The other water-purifying unit 6 may be moved forward while extracting and cleaning a, and the cleaned water-purifying unit 6a may be installed in a vacant place.

<Embodiment 2> Embodiment 2 of the present invention
FIG. 6 is a plan view showing the whole of a water purification device 1 installed in a water channel of a water purification plant according to a second embodiment, in which the operation of the first embodiment is made mechanically possible. It is a flowchart showing a continuous operation procedure of water purification device 1. A stopper 8 for stopping the water purification unit 6 is provided at an upper portion of the upstream side wall of the water channel 3, and a spacer 9 for keeping an appropriate interval is interposed between the water purification units 6. On the downstream side, a water purification unit moving means 10 composed of a hydraulic cylinder for pushing and moving the water purification unit group 7 to the upstream side is provided, and a cleaning device installation place 11 for cleaning the water purification unit 6 outside the water channel 3 is provided. Is provided. The cleaning method at the cleaning device installation location 11 is as follows. A water tank having a size that can accommodate the water purification unit 6 is provided, and the water purification unit 6 is filtered by a nozzle that blows cleaning water or compressed air, or by bubbling that releases bubbles in the water tank. This is for removing the deposit attached to the material 4. Further, on both sides of the water channel 3, a traveling rail 12 of a portal crane, which is a transport means 13, is extended along the water channel to a washing device installation location 11. Conveying means 1
3 is provided with lifting means 14.

FIG. 7 shows the water purification unit 6 according to the second embodiment of the present invention.
It explains each step of the re-installation. Water purification unit 6
a, 6b, 6c, and 6d are indicated by reference numerals a, b, c, and d in the figure. (A) The treated water flows into the water channel 3 from the 6a side and is filtered in the order of the water purification units 6a, 6b, 6c, and 6d to generate purified water. (B) The transporting means 13 moves onto the water purification unit 6a having a reduced filtration capacity, lifts and suspends the suspending material 26 of the water purification unit 6a with a hoist, and transports the suspended material 26 onto the washing device installation location 11.
The water purification unit 6a is placed in a water tank in the washing device installation location 11. In the water tank, the deposits on the filter medium 23 of the water purification unit 6a are washed away by washing water or bubbling. (C) In parallel with the cleaning of the water purification unit 6a, the spacers 9, 9 sandwiched between the water purification unit 6a and the water purification unit 6b are removed and placed, and the water purification unit moving means 1 is moved.
0 to extrude the cylinder, 6b, 6c, 6
The water purification unit group 7 including the three units d is slowly moved to the upstream side. The transporting unit 13 transports the cleaned water purification unit 6 a to the end of the water purification unit group 7. (D) The cylinder of the water purification unit moving means 10 is housed, and the removed 9, 9 is set at the rear of the water purification unit 6d, the water purification unit 6a is lowered into the water channel 3, removed from the transport means 13, and the installation is completed. I do.

Thereafter, when the water purifying unit 6b reaches the cleaning time, the water purifying unit 6b is similarly detached and transported to the cleaning device installation location 11, while 6c, 6d and 6a are moved forward, and the cleaned 6b is removed. Install at the end. According to the second embodiment, during the cleaning of any of the water purification units, the remaining water purification units can continuously perform the water purification operation. The cleaning time of each cleaning unit can be equalized without overusing a specific water purification unit.

<Embodiment 3> FIG. 8 is a plan view showing an embodiment 3 in which the water purification apparatus of the present invention is installed in a distribution reservoir of a water purification plant, and FIG. 9 is a front view of the same. Water purification device 35
In a distribution reservoir 40 having a waterway formed by three partitioning crossflow struts 36, 37, and 38, the location of a crossflow strut 38 serving as a final flow strut is a water purification unit so that flowing water flows at an appropriate flow rate without stagnation. An installation location 41 is provided, and a water purification unit group 7 including the water purification units 6a, 6b, and 6c is installed in the installation location 41. Each water purification unit is the same as described above. The washing device installation location 11 is located outside the reservoir 40.
Is provided. And the water purification unit installation location 41
The water purification unit 6 extends between the
A transport wire 45 for extracting and transporting is installed in the air. The transport wire 45 is supported by steel towers 42 and 43 erected behind the water purification unit installation location 41 and the washing device installation location 11, and the transport wire 45 is driven and rotated by a motor (not shown). Reciprocate by The transport wire is provided just above the water purification unit group 7 and the washing device installation location 11, and a lifting means 14 such as an electric hoist is fixed. The lifting means 1
In FIG. 4, a lifting wire 15 having a hook 46 is lowered. Note that, instead of the transport wire, a rail may be installed in the air, and a transport means using a hoist running on the rail may be used.

The procedure for cleaning the water purifying unit and the water purifying operation may be the same as in the second embodiment. Cleaning equipment installation location 1
In FIG. 1, reference numeral 47 denotes a submersible pump, and 48 denotes a washing water injection unit (nozzle). The cleaning water injection unit 48 may use a compressor to inject compressed air outside the tank or generate bubbles in the cleaning tank to perform bubbling cleaning. In addition, since the washing | cleaning apparatus installation place 11 was provided in the upstream of the waterway, even if dirt falls from the water purification unit 6 suspended for washing | cleaning at the time of conveyance, since it falls into the treated water (raw water side) before water purification, The dirt is filtered and purified by the remaining water purification units.

[0028]

As described above, the present invention has the following effects. In the case of a conventional water purifier, in the case of a multi-stage system, the filter media is washed in the water channel.If continuous water purification operation is to be performed, a bypass pipe or open / close valve that bypasses the water flow must be installed, and space is required. Security and a large capital investment were required. According to the water purification apparatus of the present invention comprising a plurality of water purification units, the filtration material is manufactured as a removable water purification unit, and a plurality of water purification units are installed in a waterway or a pond, and the water purification units that need to be washed (regenerated) are sequentially placed. Since it is removed from the water channel by the desorption / conveyance means, transported to the cleaning water tank or the reprocessing site, and cleaned or regenerated, it is re-installed in the water channel, so the installation of bypass pipes and open / close valves is unnecessary. In addition, a device that enables continuous water purifying operation by continuously supplying water through the remaining water purifying units even during the cleaning (regeneration) of the water purifying unit is realized.

Further, without providing additional equipment such as a bypass and a valve in the prior art, the water purification unit in the rear row is removed while the water purification unit in the front row is taken out from the inflow side of the treated water and subjected to cleaning or regeneration processing. Can be moved forward by a moving means to wash or regenerate the extracted water purification unit, and can be reinstalled in the last row. In other words, after extracting the most dirty water purification unit and performing cleaning or regeneration processing,
Repeat the re-installation in the back row of the water purification unit with the least contamination, and perform the water purification operation while maintaining the performance of the water purification unit.If this means is used, the contamination such as the adhesion of impurities to each water purification unit is not biased, Water leveling can be performed efficiently and water purification can be performed efficiently. In addition, since it does not require new equipment such as pipes, valves, and water purification tanks as in the prior art, it is easy to use existing waterways, thereby reducing equipment costs and equipment maintenance costs. It is.

Further, since a traveling device which runs on a rail or a wire rope installed in the air between the washing device installation location and the water purification device installation location and which is equipped with an electric hoist is used, the degree of freedom with respect to the installation of the transport means is increased. This is advantageous when the present invention can be applied to an existing water purification plant. Also, as a water purification unit, a metal honeycomb foil strainer having an extremely high aperture ratio, in which a number of small holes are formed by alternately stacking metal flat foils and metal corrugated foils, is disposed at intervals as a support material. The pressure loss of the support material can be reduced because the storage part is configured by filling the granular activated carbon or the filter material.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an entire water purification device including a plurality of water purification knits according to a first embodiment of the present invention.

FIG. 2 is a perspective view of the water purification unit according to the present invention with a lid removed.

FIG. 3 is a central vertical sectional view of FIG. 2;

FIG. 4 is a partially enlarged front view of a metal honeycomb strainer used in the water purification unit of the present invention.

FIG. 5 is a transporting means (a portal crane) according to the embodiment of the present invention.
FIG. 3 is a front view showing a raised state of the water purification unit.

FIG. 6 is a plan view showing the entire water purification device according to Embodiment 2 of the present invention.

FIG. 7 is a flowchart showing a water purification operation according to Embodiment 2 of the present invention.

FIG. 8 is a third embodiment in which the present invention is applied to a distribution reservoir of a water purification plant.
FIG.

FIG. 9 is a plan view showing the third embodiment.

FIG. 10 is a block diagram showing a conventional technique.

[Explanation of symbols]

 1 ····· Water purification device 2 ····· Treated water 3 ····· Water channel 4 ···· Filter material 5 ···· Filtration unit 6 ···· Water purification units 6a to 6e · Water purification unit 7 · · · · · Water purification unit group 8 · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · Purification unit installation means for water purification unit ························································ Lifting wire 16 ························· Metal foil member 18 ······ Small holes 19 ····· Metal honeycomb strainer 20 ····· Metal honeycomb strainer 21 ····· Filter unit 22 ····· Outer frame body 23 ···· Biological contact Filtration member 24 ・ ・ ・ ・ ・ ・ Ceiling plate 25 ・ ・ ・ ・ ・ ・ ・ Bolt 26 ・ ・ ・ ・ ・ ・ Hang ring 27 ・... Screw through hole 28 ... Screw hole 29 ... Support part 30 ... Support part 31 ... Water purification unit installation location 35 ... Pure water purification device 36 ... ······························································ Reservoir. ... Tower 44 ... Pulley 45 ... Conveying wire 46 ... Hook 47 ... Pump 48 ... Washing water injection unit

Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat II (reference) C02F 1/28 C02F 3/10 A 3/06 B01D 23/00 A 3/10 23/02 Z 23/14 F term ( Reference) 4D003 AA01 BA02 BA03 CA02 CA10 DA22 DA30 EA01 EA25 EA35 FA06 4D017 AA01 BA03 CA03 DA05 DB01 DB10 EA05 EB09 4D024 AA05 AB04 BA02 BB01 BC01 CA04 DB02 DB03 DB15 4D041 AA16 AB01 AB18 AB23 AB24 AC01 AD00 BC06 AD03 AD03 CA08 CB00 CB03 CC00 4D066 AA02 BB12 FA00 FA01 FA02 FA03

Claims (6)

[Claims] 1. A water purifier using a filter medium provided in a water channel or a pond of a water purification plant, wherein the water purifier comprises a plurality of detachable water purifying units which are arranged in series facing the flowing direction of treated water. From a plurality of water purifying units, comprising: a water purifying unit cleaning device, and a transporting unit that removes the water purifying unit with reduced purification capacity, transports the water purifying unit to the cleaning device, reversely transports the wafer after cleaning, and installs it again. Water purification equipment. 2. A water purifier using a filtering material provided in a water channel or a pond of a water purification plant, wherein the water purifier comprises a plurality of detachable water purifying units which are arranged in series facing the flowing direction of treated water. In the process of removing the purified water purification unit with reduced purification capacity, transporting it to the cleaning device, cleaning and installing it again, the remaining water purification unit enables continuous purification operation of the treated water. A method of operating a water purification device including a plurality of water purification units. 3. A water purifier using a filtering material provided in a water channel or a pond of a water purification plant, wherein the water purifier is provided with a plurality of detachable water purifiers arranged side by side in the flowing direction of treated water. A water purification unit group installation location consisting of units,
A cleaning device for cleaning a water purification unit having a reduced purification capacity, a transporting device provided between the water purification unit and the cleaning device, and a lifting device for attaching and detaching the water purification unit; A water purification device comprising a plurality of water purification units, comprising a moving means for moving the unit group in a flowing water direction (forward). 4. A water purifier comprising a plurality of water purifier units according to claim 3, wherein said water purifier having a reduced purification capacity is removed by a conveying means provided with said lifting device, and is conveyed to a cleaning device for cleaning. During this time, the remaining water purification units are moved in the flowing water direction (forward) by the moving means, and the water purification units that have been further washed are reversely transported to the water purification unit group installation location and are repeatedly installed in the last row. A method of operating a water purification apparatus comprising a plurality of water purification units, wherein each water purification unit is sequentially washed, and a continuous purification operation of treated water is enabled by the remaining water purification units even during each process operation. 5. A transport device having a lifting device for attaching and detaching a water purification unit is provided on a traveling device traveling by a rail or a wire rope installed in the air between a washing device installation site and the water purification device installation site. The water purification device comprising a plurality of water purification units according to claim 1, wherein a water purification device equipped with a hoist is used. 6. A water purification unit provided in a water channel or a pond of a water purification plant, wherein a plurality of small holes (apertures) are formed by alternately stacking metal flat foils and metal corrugated foils, and have an appropriate thickness. The first metal honeycomb strainer and the second metal honeycomb strainer having the same configuration face each other, are connected at appropriate intervals so that a storage portion is formed therebetween, and are granularly connected to the storage portion. A water purification unit comprising activated carbon or another filter material.