JP4475924B2 - Filtration device - Google Patents

Description

  The present invention relates to a filtration device that performs purification treatment on raw water (contaminated water) using a fiber filter medium, and that can perform a cleaning and regeneration process on a clogged fiber filter medium.

  In recent years, as part of environmental beautification measures in urban renewal projects in Rinkai District, the seawater in polluted closed sea areas such as inner bays, harbors or canals has been purified by filtering equipment into clear seawater in a short period of time. The national and local governments are promoting to improve the hydrophilicity and landscape in the surrounding area of the sea area and improve the spatial value.

  In general, a filtration device using a fiber filter medium is used for water treatment for separating and removing suspended substances in such closed water system seawater (same as closed system water such as artificial ponds).

  Some conventional filtration devices using fiber filter media are filled with fiber filter media in a closed tank and filtered by pumping raw water (contaminated water) downward from above the fiber filter media layer. Further, in the filtration apparatus using the fiber filter medium, when suspended substances are trapped in the fiber filter medium layer and become clogged, washing water is allowed to flow from below to above the fiber filter medium layer while aeration. The fiber filter medium is washed and regenerated by draining (see, for example, Patent Document 1).

  In the filtration apparatus using the conventional fiber filter medium as described above, a vertical filtration apparatus that performs purification treatment by flowing raw water (contaminated water) vertically in a sealed tank, and raw water (contaminated water) There is a horizontal type filtration device that performs purification treatment by circulating in a sealed tank in the horizontal direction.

  In this vertical filtration apparatus, it is easy for the filter medium to form a filter layer having a certain thickness by using gravity. Furthermore, in the vertical type filtration device using the fiber filter medium, the purification rate is further improved to improve the processing performance, and the suspended matter trapped by the fiber filter medium filled in the sealed tank causes clogging. In some cases, it is required that the fiber filter medium can be washed and regenerated efficiently with a small amount of reverse cleaning water.

  Also, in the horizontal type filtration device, even if the filter medium is introduced into the device and the raw water flows in the horizontal direction, gravity acts on the filter medium, so the filter medium is perpendicular to the flow direction of the raw water (vertical) only with the pressure of the water flow. (A direction) is not laminated at a constant thickness, but tends to be in a non-uniform laminated state, for example, in a mountain shape. For this reason, when the filter media are stacked in a chevron shape, the thickness in the horizontal direction in which the raw water flows is thinner than the vertical layer in the vertical direction. As a result, the purification rate is lowered, and the purification rate as a whole is lowered as compared with a vertical filtration device or the like.

For this reason, in the horizontal type filtration device, the filter medium is laminated in a constant thickness with respect to the vertical direction (vertical direction) to prevent the purification rate from being lowered and to further improve the purification rate. In addition to improving the treatment performance, when the fiber filter medium filled in the closed tank is clogged with suspended substances, the fiber filter medium can be washed and regenerated efficiently with a small amount of treated water for backwashing. It is demanded to be able to wash and recycle the fiber filter well.
JP 10-305204 A

  In consideration of the above-mentioned facts, the present invention prevents the reduction of the purification rate by allowing the filter medium to be laminated in a constant thickness with respect to the flow direction of the raw water, and the suspended matter is trapped in the fiber filter medium. It is an object of the present invention to newly provide a filtration device that can be easily improved to improve the purification rate, and that can efficiently wash and regenerate the fiber filter medium with a small amount of treated water for backwashing.

According to a first aspect of the present invention, there is provided a filtration apparatus according to a first aspect of the present invention, wherein a horizontal tank configured as a horizontal container by closing both end openings of a cylindrical body portion with a lid member, and a first tank connected to one lid member of the horizontal tank. A liquid feed pipe, a second liquid feed pipe connected to the other lid member of the horizontal tank, and a water passage hole that is disposed on the second liquid feed pipe side inside the horizontal tank and circulates the processing liquid, A filter medium support member provided with a mesh member for preventing the outflow of the fiber filter medium in the water passage hole, and a slide mechanism inside the cylindrical body from the first liquid feeding pipe side to the filter medium support member side inside the horizontal tank. Raw water that is slidably supported and provided with a water passage hole through which the processing liquid is circulated, and a mesh member that prevents the outflow of the fiber filter medium is provided in the water passage hole. Fiber filter media is supported by the flow pressure of the filter A filter medium operating member mounted so as to be sandwiched between the members and compressed so as to move the fiber filter medium layer so as to have a constant thickness in the vertical direction, and a processing liquid injected from the second liquid feeding pipe The horizontal tank is in a cleaning and regenerating state in which the filter medium operating member is moved to the first liquid feed pipe side by the pressure of the flow to expand the space filled with the fiber filter medium so that the fiber filter medium is dispersed in the horizontal direction. And aeration means connected to aerate from the lower portion toward the fiber filter medium .

  By comprising as mentioned above, when performing the process filtered with a filtration apparatus, raw | natural water (contaminated water) is inject | poured in a tank from a 1st liquid feeding pipe with a predetermined | prescribed pressure. Due to the pressure of the raw water flow, the filter medium operating member is guided and moved by the slide mechanism to the second liquid feeding pipe side, and automatically enters a filtration process state. In the filtration treatment state of the filtration device, the filter medium operating member compresses the fiber filter medium by sandwiching it between the filter medium support member by the pressure of the raw water flow, and the layer of the fiber filter medium has a constant thickness in the vertical direction. When the raw water is flowed in the horizontal direction, the purification rate is lowered by purifying at the same purification rate with the fiber filter material layer of the same thickness in the upper part and the lower part in the tank. Can be prevented. Furthermore, in the filtration device, the fiber filter medium itself is compressed, and the gaps between the many fiber filter media are reduced, so that suspended substances are easily captured, and the purification rate can be further improved.
  When the filter medium is clogged after a certain period of filtration, the fiber filter medium is washed and regenerated. In the cleaning and regeneration processing of the fiber filter medium, first, the cleaning processing liquid is injected into the tank from the second liquid feeding pipe and discharged from the first liquid feeding pipe. As a result, in the filtration device, the filter medium operating member mounted therein moves to the first liquid feeding pipe side by the pressure of the flow of the cleaning treatment liquid, and widens the space filled with the fiber filter medium, The state is automatically shifted to a cleaning / regenerating process state in which it is developed so as to be dispersed in the horizontal direction. Next, in the filtration device, it is possible to perform cleaning with high cleaning efficiency by driving the aeration means and performing the aeration treatment in a state where the fiber filter medium is widely deployed in the space in the tank. Next, the aeration means is stopped, the cleaning liquid is flowed from the second liquid feeding pipe to the first liquid feeding pipe, and the pollutant discharged into the tank is discharged out of the tank. In this way, in the filtration device, the cleaning regeneration process can be performed using only a predetermined amount of the cleaning processing liquid stored in the tank, so that the fiber filter medium can be efficiently treated with a small amount of the cleaning processing liquid (back cleaning processing water). Cleaning regeneration processing can be performed, and cleaning processing liquid can be saved.
  Next, in a filtration apparatus, raw | natural water is inject | poured from a 1st liquid feeding pipe, and is discharged | emitted from a 2nd liquid feeding pipe. Then, due to the pressure of the flow of raw water injected from the first liquid feeding pipe, the filter medium operating member is guided and moved by the slide mechanism to the second liquid feeding pipe side, and automatically returns to the filtration process state, and the filtration process is performed. You can resume. "

According to a second aspect of the present invention, in the filtration device according to the first aspect, the slide mechanism has a sliding guide shaft that is fixedly disposed in the horizontal tank, and is inserted into the insertion hole of the support member of the filter medium operating member. It is configured to be slidably inserted into and guided.

  By configuring as described above, in addition to the operation and effect of the filtration device according to claim 1, the support member of the filter medium operation member moves smoothly on the sliding guide shaft without causing a shake. be able to.

  According to the filtration device of the present invention, even in a filtration device using a fiber filter medium, the filter medium is stacked in a constant thickness with respect to the flow direction of the raw water to prevent a reduction in purification rate. it can. Further, the suspended matter can be easily captured by the fiber filter medium, and the purification rate can be further improved. Furthermore, it has the effect that the fiber filter medium can be efficiently washed and regenerated with a small amount of treated water for backwashing.

  Hereinafter, a first embodiment of the filtration device of the present invention will be described with reference to FIGS. 1 to 6.

  FIG. 1 is an overall schematic configuration diagram showing, in cross section, a horizontal filtration apparatus using a fiber filter according to the first embodiment.

  In this horizontal type filtration device 10, both ends of a cylindrical body having a cylindrical shape (if it has a cylindrical body, a cylindrical shape having various cross-sectional shapes such as a polygonal cross section and an elliptical cross section may be used). The tank 12 configured as a sealed container with the openings closed with lid members is laid sideways and installed. Thus, when the filtration device 10 is configured horizontally, the height of the filtration device 10 as a whole can be lowered and installed inconspicuously, so that the surrounding landscape of the inner bay, harbor, canal, etc. in the coastal district is not impaired. You can Furthermore, even when the environment in which the filtration device 10 is installed has a height restriction, it can be installed with the height kept low.

  A first liquid feed pipe 16 for introducing raw water for purification treatment is connected to the tank 12 on one side of the lid member 14 on the left side in FIG. Further, the tank 12 is connected with a second liquid feeding pipe 20 for discharging the treated processing liquid to the other lid member 18 on the right side in FIG. Further, an exhaust pipe 44 communicating with the inside of the tank 12 for exhausting the air in the tank 12 is installed on the top of the lid member 18.

  As shown in FIG. 2 (D), at the bottom of the tank 12, one of the inner peripheral surfaces of the tank 12 is provided as an aeration means for aerating the fiber filter medium 22 filled in the tank 12 into the floating processing liquid. An aeration pipe 46 connected so as to open the pipe end is installed. This aeration means is configured by connecting an air supply pump 48 to the other end of the aeration pipe 46.

  As shown in FIG. 1, a predetermined amount of fiber filter medium 22 is filled in the tank 12. Further, the inside of the tank 12 is compressed so as to form a layer having a uniform thickness with respect to the vertical direction (vertical direction) when the raw water is purified, and the fiber filter medium is washed. In order to operate the fiber filter medium 22 to be widely deployed in the space in the tank 12 during the regeneration process (back washing process), the filter medium operating member 32 and a slide mechanism (slide) that supports the filter medium operating member 32 slidably. Means).

  In order to constitute this slide mechanism, a fiber filter medium 22 is arranged inside the tank 12 by compressing it into a layer having a uniform thickness in the middle of the cylindrical portion of the tank 12 and a predetermined position in the vicinity of the one lid member 14. The support members 24 are respectively installed at predetermined positions slightly closer to the other lid member 18 side from the end surface of the first cover member.

  As shown in FIG. 3, these support members 24 are arranged with the free ends of the brace members 26 assembled in a cross shape fixed to the inner peripheral surface of the tank 12. Further, as shown in FIG. 1, the arm members 26 facing each other are provided with a columnar sliding guide shaft 28 between the center portions intersecting in a cross shape, and the center line of the inner peripheral cylindrical surface of the tank 12. It is laid so that it becomes parallel to.

  Further, the arm members 26 facing each other are provided with auxiliary sliding guide shafts 30 between the respective predetermined positions eccentric from the center of the intersecting arm centers, and the center line of the inner peripheral cylindrical surface of the tank 12. It is laid so that it becomes parallel to.

  In addition, between the two arm members 26 in the tank 12, a filter medium operating member 32 is connected to one arm member 26 by a slide guide shaft 28 and an auxiliary slide guide shaft 30 as a slide mechanism (slide means). The other arm member 26 is supported so that it can slide freely in a state where rotation is restricted.

  As shown in FIGS. 4 (A) and 4 (B), the filter medium operation member 32 is formed in a front circular shape, and a support member 34 into which the slide guide shaft 28 is slidably inserted is arranged at the center. Set up. The support member 34 is configured by installing a plastic bearing member having a small friction coefficient on the inner periphery of a short cylindrical member.

  Further, the filter medium operating member 32 integrally fixes the reinforcing members 31 formed in a narrow cylindrical shape at two locations on the concentric circle in the plane portion. The reinforcing member 31 directly hits the arm member 26 when the filter medium operating member 32 approaches the arm member 26, and stops the operation of the filter medium operating member 32, so that the plane of the filter medium operating member 32 directly contacts the arm member 26. Prevent damage from collision.

  A sliding guide hole 36 through which the auxiliary sliding guide shaft 30 is slidably inserted is provided at a predetermined position of the filter medium operating member 32.

  The filter medium operating member 32 mounted in this way is supported so that the back-and-forth and right-and-left fluctuations are reduced when the support member 34 slides on the slide guide shaft 28, so that it is smoothly and stably supported. Will move. That is, the filter medium operating member 32 becomes a movable partition mounted in the tank 12 and partitions the volume of the filling portion of the fiber filter medium 22 so as to be adjustable.

  In the filter medium operating member 32, a large number of through holes 38, which are through holes, are perforated at regular intervals at positions on concentric circles with respect to the center of the circular plane so as to be distributed in an average on the circular plane.

  Further, in order to prevent the fiber filter medium 22 from flowing out from the water passage holes 38 to the filter medium operation member 32, the back surface of the filter medium operation member 32 is covered so as to cover the range where the water flow holes 38 are arranged. A mesh member (not shown) is installed as a filter medium outflow prevention means over a predetermined range.

  As shown in FIG. 1, a filter medium support member 40 is disposed in the tank 12 in the vicinity of the lid member 18 in order to prevent the fiber filter medium 22 from flowing out from the second liquid feeding pipe 20. .

  As shown in FIGS. 5A and 5B, the filter medium support member 40 is formed in a front circular shape, and its circumferential portion is fixedly disposed on the inner periphery of the tank 12. In the filter medium operating member 32, a large number of water passage holes 42, which are through holes, are formed at equal intervals at positions on concentric circles with respect to the center of the circular plane so as to be distributed in an average on the circular plane.

  Further, the filter medium support member 40 is provided with a mesh member (not shown) as a filter medium outflow prevention means over a predetermined range of the plane of the filter medium support member 40 so as to cover the range where each water passage hole 42 is arranged. To do.

  In the filtration device 10, the support member 24 disposed at a predetermined position near the lid member 18 in the tank 12 is disposed at a position adjacent to the filter medium support member 40, or as a part of the filter medium support member 40. You may comprise integrally.

  The fiber filter medium 22 suitable for use in the thus configured filtration device 10 includes, for example, one formed by forming an aggregate of thermoplastic fibers and fusing and fixing a part of the fibers. More specifically, a thermoplastic short fiber is made into a bundle shape, a fiber on the surface of the bundle and a part of the inner fiber are fused and fixed to form a string shape, and this is cut into a short column shape. Is preferred.

  Generally, the finer the particle size, the better the suspended solids can be removed. However, if the particle size is too fine, it will be difficult to retain in the filtration layer and will be easily washed away. If the value is increased, it becomes impossible to remove fine suspended solid substances.

  Therefore, the fiber filter medium 22 according to the present embodiment partially fuses and fixes the short fiber aggregates of thermoplastic fibers to enable the removal of fine suspended solids by the short fibers and to prevent the fibers from being washed away. It can be prevented. As a preferred embodiment, short fibers are carded to make the fiber direction constant, and are formed into a bundle to form a bundle of string-like fibers, and a part of these fibers are heated and fused together to be fixed. And the like formed into a short column shape.

  Examples of the thermoplastic short fiber material used here include polyester, polypropylene, polyamide, polyvinyl alcohol, polyacryl, and the like, and these may be used alone or in admixture of two or more kinds. Further, the short fiber may be a normal fiber shape, a hollow fiber, or a deformed fiber having a crack or the like on the fiber surface. Deformed fibers and hollow fibers having irregularities on the fiber surface are preferably used because they have a large surface area and can effectively remove fine suspended solid substances.

  As the size of the fiber filter medium 22, for example, when the fiber filter medium 22 is short columnar (cylindrical), the diameter is preferably about 2 to about 10 mm, particularly about 3 to 3 mm from the viewpoint of the removal efficiency of the solid suspended solids. About 6 mm is preferable. The length is preferably about 2 to about 10 mm, particularly about 3 to about 6 mm.

  Next, the operation and operation of the filtration device according to the first embodiment configured as described above will be described.

  First, when the raw water (polluted water) is filtered by the filtration device 10, the raw water (polluted water) that is the seawater of the polluted closed sea areas such as inner bays, harbors, canals, etc. in the coastal district is first sent. The pipe 16 is injected into the tank 12 at a predetermined pressure.

  Then, due to the pressure of the flow of the seawater (raw water), the filter medium operating member 32 is guided and moved by the sliding guide shaft 28 to the vicinity of the support member 24 on the second liquid feeding pipe 20 side, and automatically shown in FIGS. It will be in the filtration process state shown to 2 (A).

  In the filtration processing state of the filtration device 10, the filter medium operating member 32 sandwiches the fiber filter medium 22 between the filter medium support member 40 and compresses it by the pressure of the flow of seawater (raw water). Thereby, in the inside of the filtration device 10 which is a horizontal type filtration device, the fiber filter material layer in which a large number of fiber filter media 22 are stacked is arranged so as to have a constant thickness in the vertical direction, so seawater (raw water) in the horizontal direction. In the tank 12, the upper portion and the lower portion of the tank 12 are purified with the same purification rate by the layer of the fiber filter medium 22 having the same thickness. Therefore, in the filtration apparatus 10 configured as described above, it is possible to prevent the purification rate from being lowered and the purification rate as a whole from being lowered at the portion where the thickness of the fiber filter medium 22 layer is thin.

  In the case of the filtration device 10 using the fiber filter medium 22, seawater (raw water) flows in the gap between the fiber filter medium 22 itself and the fiber filter medium 22, and the suspendability contained in the seawater (raw water). To capture the substance. Here, in this filtration device 10, the filter medium operating member 32 compresses the fiber filter medium 22 by applying pressure to the flow of seawater (raw water), so that the fiber filter medium 22 itself is compressed and a large number of fiber filter media 22 are compressed. As a result, the suspended matter is reduced, and the suspended solids are easily trapped, and the purification rate can be further improved. The pressure at which the filter medium operating member 32 compresses the fiber filter medium 22 is determined by the pressure generated when raw water (contaminated water) is circulated from the first liquid feeding pipe 16. Therefore, by adjusting the flow rate and pressure when the raw water (contaminated water) is injected from the first liquid feeding pipe 16, the pressure at which the filter medium operating member 32 compresses the fiber filter medium 22 is arbitrarily adjusted, and the filtration device 10. The filtration efficiency can be easily adjusted, and the quality of the treated water can be maintained.

  The seawater (raw water) obtained by filtering the floating solid material by the filtration device 10 is returned from the second liquid feeding pipe 20 to the sea in a closed sea area through a water feeding pipe (not shown).

  When the filtering device 10 filters the seawater (raw water) for a certain period of time and the fiber filter medium 22 is clogged, the filtering process of the filtering device 10 is once stopped, and the fiber filter medium is washed and regenerated.

  Here, as a method of detecting clogging of the fiber filter medium 22 in the filtration device 10, seawater flowing through the first liquid feeding pipe 16 side serving as the inlet of the filtration device 10 and the second liquid feeding pipe 20 side serving as the outlet. When a clogging is detected by using a detection means that outputs a control signal when the differential pressure exceeds a predetermined differential pressure that has been set, control is performed so that the fiber filter medium is washed and regenerated. When the method or the time during which the filter medium 22 is clogged during the processing operation of the filtration apparatus 10 can be predicted in advance, the time is measured by a timer, and the fiber filter medium is washed and regenerated when the predetermined time has elapsed. It is conceivable to perform control so that

  In this fiber filter media cleaning and regenerating process, the second liquid supply pipe 20 is used to supply a cleaning process liquid (raw water, industrial water, or seawater with little dirt that has been purified by the filtration device 10 and stored in a tank (not shown) or the like. Liquid) is injected into the tank 12 at a predetermined pressure and discharged from the first liquid feeding pipe 16.

  As a result, the filtering device 10 moves until the filter medium operating member 32 mounted therein contacts the support member 24 on the first liquid feeding pipe 16 side by the pressure of the flow of the cleaning treatment liquid, and the fiber filter medium 22 is moved. By expanding the section (space) to be filled, it automatically shifts to a cleaning regeneration process state in which the fiber filter medium 22 shown in FIG. 2B is spread so as to be dispersed in the horizontal direction.

  Next, in the filtration device 10, the cleaning liquid in the tank 12 (raw water, industrial water, or a liquid such as seawater with little dirt that has been purified by the filtration device 10 and stored in a tank (not shown)) is stored. After the state of FIG. 2 (C) in which a predetermined amount of the cleaning treatment liquid with the water level lowered and stored is stored, the air supply pump 48 of the aeration means is driven as shown in FIG. 2 (D) for aeration. By carrying out an aeration process in which air is blown from the lower side of the tank 12 through the pipe 46 for a certain period of time and exhausted from the exhaust pipe 44, the fiber filter medium 22 is vigorously stirred, and the gap between the fiber filter medium 22 itself, the gap between the fiber filter medium 22, etc. The suspended substance trapped in the tank is discharged into the tank 12.

  In the filtration device 10, the aeration treatment is performed through the aeration pipe 46 arranged over a wide range in the aeration means in a state where the filter medium operating member 32 is moved and the fiber filter medium 22 is widely deployed in the space in the tank 12. Therefore, the cleaning efficiency can be improved.

  Next, the air feed pump 48 is stopped to stop air blowing (aeration), and the cleaning treatment liquid is moved from the second liquid feed pipe 20 to the first liquid feed pipe 16 as shown in FIG. (Raw water, industrial water, or a liquid such as seawater with little dirt that has been purified by the filtration device 10 and stored in a tank (not shown), etc.) To the sedimentation basin etc.

  As described above, the filtration device 10 can perform the cleaning regeneration process by using only a predetermined amount of the cleaning processing liquid stored in the tank 12, so that the fiber can be efficiently used with a small amount of the cleaning processing liquid (processing water for back cleaning). The filter medium can be washed and regenerated, and the washing solution can be saved.

  Next, in the filtration device 10, after the pollutant in the container is sufficiently discharged and the cleaning regeneration process is finished, raw water (polluted water) is injected from the first liquid feeding pipe 16 at a predetermined pressure, 2 It discharges from the liquid feeding pipe 20 and switches to the filtration process state.

  Then, in the same manner as described above, as shown in FIG. 2 (F), the filter medium operating member 32 is located on the second liquid feeding pipe 20 side by the pressure of the flow of seawater (raw water) injected from the first liquid feeding pipe 16. It moves while being guided by the sliding guide shaft 28 to the vicinity of the support member 24, and automatically returns to the filtration processing state shown in FIG. 1 and FIG.

  That is, in the filtration apparatus 10, the filling density of the fiber filter medium 22 filled in the vertical tank 12 is increased in the filtration process state to improve the efficiency of the filtration process, and the packing density is reduced in the washing regeneration process state. It is possible to improve the efficiency of the cleaning / regenerating process by adjusting to the above. If the packing density of the fiber filter medium 22 is increased, the amount of seawater (raw water) that can be processed per unit time is reduced, but fine particles can also be captured.

  Moreover, in this filtration apparatus 10, since the fiber filter medium 22 can be washed, it can be reused for a long time, and can be washed well by aeration using a small amount of the washing treatment liquid. The amount can be reduced.

  Further, in the filtering device 10, when the filter medium operation member 32 is configured to be moved and operated with raw water (contaminated water) or a cleaning treatment liquid flowing through the vertical tank 12, the filter medium operation member 32 is mechanically moved. Since the means to operate is unnecessary, the structure of the filtration apparatus 10 can be simplified and an inexpensive product can be provided.

  Next, a second embodiment of the present invention will be described with reference to FIG. The filtration device 10 shown in FIG. 7 is configured as a vertical filtration device.

  In the filtration device 10 that is this vertical filtration device, the first liquid feeding pipe 50 is disposed so as to penetrate near the one lid member 14 in the vertical tank 12. The first liquid feeding pipe 50 is configured to open its free end opening toward the inner surface of the lid member 14 by bending its free end portion upward.

  Further, in the inside of the vertical tank 12, a filter medium operating member 32 and a slide mechanism (sliding means) that slidably supports the filter medium operating member 32 are configured. The lower predetermined position and the predetermined position which is close to the intermediate position near the lower side of the cylindrical portion of the vertical tank 12 and slightly approaches the lid member 18 side slightly below the end face of the fiber filter medium 22 which is compressed and arranged in a layered form with a uniform thickness In addition, the support members 24 are respectively installed. Between these two support members 24, a sliding guide shaft 28 is installed in the vertical direction. In addition, you may construct the auxiliary | assistant sliding guide shaft 30 as needed.

  A filter medium operating member 32 is mounted in the vertical tank 12 so as to slide freely in the vertical direction along the sliding guide shaft 28.

  Further, a filter medium support member 40 as a support floor is installed in the vertical tank 12 near the lower lid member 18.

  In the filtration device 10 which is this vertical filtration device, the fiber filter medium 22 is filled between the filter medium support member 40 and the filter medium operation member 32 in the vertical tank 12, so that the gravity of the filter medium support member 40 is reduced. The layer of the fiber filter medium 22 is stably laminated with a constant thickness by the action.

  Further, in this vertical tank 12, an aeration means for aeration in a liquid (treatment liquid) in which the fiber filter medium 22 filled in the tank 12 floats is formed, so that one pipe end is a bottom surface of the vertical tank 12. The aeration pipe 46 connected so as to open to the inner surface portion of the lid member 18 that hits the portion is installed. Note that the aeration end of the aeration pipe 46 may be configured to extend through the filter medium support member 40 so as to directly aerate into the space filled with the fiber filter medium 22.

  This aeration means is configured by connecting an air supply pump 48 to the other end of the aeration pipe 46. Further, the lid member 18 is provided with a footrest 52 for installing the filtration device 10.

  When the filtration process is performed by the vertical filtration apparatus 10 configured as described above, raw water (contaminated water) that is contaminated seawater in a closed sea area is injected into the tank 12 from the first liquid feeding pipe 50.

  Then, by the pressure when the seawater (raw water) flows so as to fall due to the action of gravity, the seawater (raw water) is guided by the sliding guide shaft 28 and moved to the vicinity of the support member 24 on the second liquid feeding pipe 20 side by its own weight. The filter medium operating member 32 that is in the filtration state sandwiches the fiber filter medium 22 between the filter medium support member 40 and compresses it. Thereby, in the inside of the filtration apparatus 10 which is a vertical type filtration apparatus, the filter medium operating member 32 compresses the fiber filter medium 22 by applying pressure to the flow of seawater (raw water), so the fiber filter medium 22 itself is compressed. At the same time, the gaps between the large number of fiber filter media 22 are reduced, and the suspended matter having a dense packing density of the fiber filter media 22 is easily trapped, so that the purification rate can be further improved.

  Further, in the case where the fiber filter medium is washed and regenerated (reverse washing treatment) by the filtration device 10, the washing treatment liquid (raw water, industrial water, or the purification device 10 is purified by the filtration device 10 from the second liquid feeding pipe 20. A liquid such as seawater or the like that is stored in a non-contaminated tank or the like is poured into the tank 12 to a predetermined water level.

Next, in the filtration device 10, the air feeding pump 48 of the aeration means is driven, and air is blown through the aeration pipe 46 that opens to the lid member 18 below the tank 12 through the aeration pipe 46 for a certain period of time. An aeration process for exhausting air from 50 (not shown) may be provided separately.

  In this aeration process, the filter medium operating member 32 having a relatively light weight is lifted to a required height position by the air sent from the aeration pipe 46 of the aeration means, so that the filter medium. A fiber that automatically shifts to a state in which a space for filling the fiber filter medium 22 surrounded by the support member 40 and the filter medium operation member 32 is expanded, and is floating in the cleaning treatment liquid filled in the wide space. The filter medium 22 is vigorously stirred, and the suspended substances trapped in the gaps of the fiber filter medium 22 itself and the gaps between the fiber filter media 22 are discharged into the tank 12.

  Next, in the filtration device 10, the air supply pump 48 is stopped, air blowing (aeration) is stopped, and a cleaning treatment liquid (raw water, industrial water, or purification treatment is performed by the filtration device 10 from the second liquid supply pipe 20. The liquid that is stored in a tank (not shown) or the like that has little dirt is injected, and the pollutant discharged from the first liquid feed pipe 50 and discharged into the tank 12 is removed from the tank 12. To the settling pond.

  Next, in the filtration device 10, after the pollutant in the container is sufficiently discharged and the cleaning regeneration process is finished, raw water (polluted water) is injected from the first liquid feeding pipe 16, and the second liquid feeding pipe. It switches to the filtration processing state discharged | emitted from 20.

  Then, the filter medium operating member 32 is guided by the sliding guide shaft 28 by its own weight and descends, and automatically returns to the filtration processing state shown in FIG.

  In the vertical filtration apparatus 10 described above, the air supply pump 48 in the aeration means is driven and the compressed air supplied from the aeration pipe 46 is configured to float the filter medium operating member 32 to a required height position. When the vertical filtration device 10 is washed and regenerated (reverse washing treatment), the filter medium operating member 32 is pulled up and held near the upper support member 24, and when the vertical filter device 10 is in the filtration treatment state, An operation means for cleaning and regeneration processing of the filter medium operating member 32 for opening the operating member 32 freely may be provided.

  Note that the configurations, operations, and effects of the second embodiment other than those described above are the same as those of the first embodiment described above, and thus description thereof is omitted.

1 is an overall schematic configuration diagram of a filtration device according to a first embodiment of the present invention. (A) thru | or (F) is a schematic block diagram of the principal part which shows the transition from the filtration process state of a filtration apparatus to completion | finish of a washing | cleaning reproduction | regeneration process based on 1st Embodiment of this invention, respectively. It is sectional drawing which shows the part of the supporting member in the filtration apparatus based on 1st Embodiment of this invention. (A) is the front view which takes out and shows the filter-medium operation member in the filtration apparatus which concerns on 1st Embodiment of this invention, (B) is the side view. (A) is the front view which takes out and shows the filter-medium support member in the filtration apparatus which concerns on 1st Embodiment of this invention, (B) is the side view. It is a schematic perspective view which shows the principal part in the tank in the filtration apparatus based on 1st Embodiment of this invention. It is a whole schematic block diagram of the filtration apparatus based on 2nd Embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Filtration apparatus 12 Tank 14 Lid member 16 1st liquid feeding pipe 18 Lid member 20 2nd liquid feeding pipe 22 Fiber filter medium 24 Support member 28 Sliding guide shaft 32 Filter medium operation member 34 Bearing member 38 Water flow hole 40 Filter medium support member 46 Aeration pipe 48 Air supply pump 50 First liquid supply pipe

Claims (2)

A horizontal tank configured in a horizontal container by closing both ends of the cylindrical body with lid members,
A first liquid feeding pipe connected to one of the lid members of the horizontal tank;
A second liquid feeding pipe connected to the other lid member of the horizontal tank;
The water tank is disposed on the side of the second liquid feeding pipe inside the horizontal tank, and a water passage hole through which the processing liquid is circulated is provided, and the water passage hole is provided with a mesh member for preventing the fiber filter medium from flowing out. A filter medium support member;
There is provided a water passage hole through which the inside of the cylindrical body is slidably supported by a slide mechanism from the first liquid feeding pipe side to the filter medium support member side in the horizontal tank and the processing liquid is circulated. A mesh member for preventing the fiber filter medium from flowing out is provided in the water passage hole, and the fiber filter medium is sandwiched between the filter medium support member by the pressure of the flow of raw water injected from the first liquid feeding pipe. A filter medium operating member mounted so as to move so as to adjust the layer of the fiber filter medium to a constant thickness in the vertical direction by attaching and compressing,
The filter medium operating member is moved to the first liquid feed pipe side by the pressure of the flow of the processing liquid injected from the second liquid feed pipe to widen the space filled with the fiber filter medium, and the fiber filter medium is horizontally oriented. Aeration means connected to aerate from the lower part of the horizontal tank toward the fiber filter medium in a cleaning and regeneration treatment state deployed so as to be dispersed;
A filtration device characterized by comprising:   The slide mechanism is configured to guide a slide guide shaft fixedly disposed in the horizontal tank by slidingly inserting it into an insertion hole of a support member of the filter medium operating member. The filtration apparatus according to claim 1.

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