WO2010035363A1 - 吸引式濾過濃縮装置 - Google Patents
吸引式濾過濃縮装置 Download PDFInfo
- Publication number
- WO2010035363A1 WO2010035363A1 PCT/JP2009/000701 JP2009000701W WO2010035363A1 WO 2010035363 A1 WO2010035363 A1 WO 2010035363A1 JP 2009000701 W JP2009000701 W JP 2009000701W WO 2010035363 A1 WO2010035363 A1 WO 2010035363A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- filter cloth
- filtration
- filter plate
- plate
- Prior art date
Links
- 239000004744 fabric Substances 0.000 claims abstract description 267
- 230000007246 mechanism Effects 0.000 claims abstract description 46
- 239000010802 sludge Substances 0.000 claims description 168
- 238000001914 filtration Methods 0.000 claims description 102
- 238000000967 suction filtration Methods 0.000 claims description 36
- 239000007788 liquid Substances 0.000 claims description 4
- 239000000706 filtrate Substances 0.000 description 25
- 239000012141 concentrate Substances 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 9
- 230000008602 contraction Effects 0.000 description 6
- 239000000463 material Substances 0.000 description 6
- 230000008961 swelling Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000011148 porous material Substances 0.000 description 4
- 230000002829 reductive effect Effects 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000007599 discharging Methods 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 230000002441 reversible effect Effects 0.000 description 3
- 239000010865 sewage Substances 0.000 description 3
- 208000005156 Dehydration Diseases 0.000 description 2
- 230000002411 adverse Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 230000018044 dehydration Effects 0.000 description 2
- 238000006297 dehydration reaction Methods 0.000 description 2
- 230000005484 gravity Effects 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000036961 partial effect Effects 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000012670 alkaline solution Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 235000013361 beverage Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 235000011389 fruit/vegetable juice Nutrition 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000009958 sewing Methods 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/01—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with flat filtering elements
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
- B01D25/02—Filters formed by clamping together several filtering elements or parts of such elements in which the elements are pre-formed independent filtering units, e.g. modular systems
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/114—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements arranged for inward flow filtration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/52—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in parallel connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/62—Regenerating the filter material in the filter
- B01D29/66—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps
- B01D29/661—Regenerating the filter material in the filter by flushing, e.g. counter-current air-bumps by using gas-bumps
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
Definitions
- the present invention relates to a suction filtration concentration apparatus, and more particularly to a suction filtration concentration apparatus capable of preventing slack in the lower portion of the filter cloth while ensuring the soundness of the filter cloth.
- a suction filtration concentration device has been used to concentrate, for example, agglomerated sludge generated in a water purification plant.
- An example of a suction type filtration concentration apparatus is disclosed in Patent Document 1.
- This suction type filtration concentration apparatus has a sludge tank for storing sludge to be filtered and concentrated, and a plurality of filter plates that extend in the vertical direction of the sludge tank and are arranged adjacent to each other in the sludge tank.
- Each filter plate has a support plate and a bag-like filter cloth that is sewn integrally with the support plate, accommodates the support plate, and forms a filtration chamber therein, and surrounds each filter plate
- a fixed frame is provided.
- a filtrate discharge pipe is provided in communication, and the filtrate is discharged through the filtrate discharge pipe. Furthermore, a suction part that sucks the filter cloth through the filtration chamber and a bulging part that bulges the filter cloth through the filtration chamber are provided, and a coil spring that constantly applies tension to each of the plurality of filter plates, The filter plate is disposed between each filter plate and the corresponding fixed frame over the periphery of each filter plate.
- the sludge in the sludge tank is sucked and filtered by the filter cloth, and the concentrated sludge adheres to the outer surface of the filter cloth, and passes through the filter cloth and is filtered.
- the filtrate introduced into the chamber can be recovered outside the sludge tank through the filtrate discharge pipe.
- each filter plate is constantly tensioned by a coil spring provided around it, and each filter plate is maintained in an immobile stationary state.
- Each filter plate flutters or swings by the suction force during filtration or the air sent into the filter chamber when the filter cloth swells, and comes into contact with the adjacent filter plate. Therefore, it is possible to avoid a technical problem that the filter area is substantially reduced or the concentrated sludge adhering to the outer surface of the filter cloth is naturally separated.
- the conventional suction filtration and concentration apparatus is increased in size, the following technical problems are caused.
- the filter plate In some cases, it comes into contact with the surface of the adjacent filter plate, substantially reducing the filtration area or inhibiting the formation of concentrated sludge. To do. In order to prevent this, it is conceivable to fix the filter plate on the upper portion of the filter plate using a connecting member instead of the upper coil spring. More specifically, unlike the coil spring, the upper end of the connecting member that does not substantially expand or contract in the vertical direction is fixed to the upper side of the fixed frame, while the lower end of the connecting member is fixed to the upper side of the filter plate. According to this, since the connecting member itself restricts the movement of the filter plate in the vertical direction, it is possible to prevent the slack in the lower part of the filter cloth due to the weight of the concentrated sludge adhering to the filter cloth. Become.
- the support cloth is swelled integrally with the support board, so that the support board is Each filter plate shrinks in the horizontal direction and tries to move in the horizontal direction.
- the support cloth is swelled integrally with the support board.
- Each filter plate extends in the horizontal direction and tries to move in the horizontal direction.
- a shackle which is a hanging bracket instead of the connecting member. More specifically, the upper end of the shackle is suspended from the upper side of the fixed frame so as to be swingable in the lateral direction, while the lower end of the shackle is fixed to the upper side of the filter plate. According to this, when the filter cloth bulges or when the filter plate moves in the lateral direction due to immersion, the shackle can swing around its upper end, so that stress is applied to the fixing position of the filter cloth. It is possible to avoid concentration and thus prevent breakage of the filter cloth.
- the object of the present invention is to maintain the vertical tension applied to the filter cloth substantially constant while ensuring the soundness of the filter cloth when the suction type filtration concentration apparatus is enlarged. Accordingly, it is an object of the present invention to provide a suction type filtration concentration apparatus capable of preventing slack in the lower part of the filter cloth.
- a suction filtration and concentration apparatus includes: A sludge tank for storing sludge to be filtered and a plurality of filter plates each having a planar portion extending in the vertical direction and arranged adjacent to each other in the sludge tank; A support plate and a bag-like filter cloth that is integrally stitched to the support plate and accommodates the support plate, whereby a filter chamber is formed inside the filter cloth; A suction means for sucking the filter cloth through, a bulging means for bulging the filter cloth through the filtration chamber, and a plurality of filter plates.
- a suction filtration and concentration apparatus having a tension applying means for adding,
- a filter frame surrounding the filter plate is provided on the outer periphery of the filter plate,
- the tension applying means provided between the lower side of the filter frame and the lower side of the filter plate is an elastic member extending in the vertical direction,
- a slide mechanism is provided between the upper side of the filter frame and the upper side of the filter plate, to move the filter plate in the lateral direction,
- the slide mechanism includes a vertical movement restricting unit that restricts the movement of the filter plate in the vertical direction.
- the sludge contained in the sludge tank is suction filtered through the filter cloth, so that the moisture in the sludge passes through the filter cloth and is guided to the filtration chamber.
- the sludge that has been dehydrated adheres to the outer surface of the filter cloth, whereby the sludge can be filtered and concentrated.
- each filter plate since each of the plurality of filter plates is constantly applied with tension from the periphery by the tension applying means, each filter plate is maintained in a stationary and stationary state. For example, the filter plates flutter during suction.
- the support cloth is swelled integrally with the support board.
- Each filter plate extends in the horizontal direction and tries to move in the horizontal direction, but a slide mechanism is provided between the upper side of the filter frame and the upper side of the filter plate to move the filter plate in the horizontal direction. Since the movement of the filter plate in the lateral direction is restricted, it is possible to prevent a situation in which stress concentrates on the fixing position of the filter cloth and causes the filter cloth to break. As the filter cloth swells or the filter cloth swells, the amount of movement of the filter plate in the lateral direction inevitably increases with an increase in the size of the suction type filtration concentration apparatus.
- the elastic member extending vertically between the lower side of the filter frame and the lower side of the filter plate contracts with the weight of the attached concentrated sludge.
- the downward tension acting on the filter cloth tends to decrease, but the vertical movement restriction means provided in the slide mechanism restricts the movement of the filtration plate in the vertical direction. Therefore, the elastic member provided at the lower part of the filtration plate As the filter contracts, it is possible to prevent the filter cloth from slacking and coming into contact with the adjacent filter plate.
- the amount of contraction of the elastic member accompanying the adhesion of the concentrated sludge to the filter cloth is inevitably increased because the amount of the concentrated sludge attached increases as the suction filtration and concentration apparatus increases in size.
- the suction filtration and concentration apparatus when the suction filtration and concentration apparatus is enlarged, the vertical tension applied to the filter cloth is substantially constant while ensuring the soundness of the filter cloth. It is possible to prevent slack from occurring in the lower part of the filter cloth.
- the slide mechanism is provided on the upper side of the filter frame and extends in the lateral direction of the filter frame, and is provided on the upper side of the filter plate and is slidable in the lateral direction with respect to the guide member.
- the vertical movement restriction means may be formed by engaging the guided member with the guide member.
- the guide member may be a rail, and the guided member may extend in the vertical direction, have a lower end fixed to the filter plate, and an engagement portion that engages the rail at the upper end.
- the engagement portion may be a ring through which the rail can be inserted.
- the engaging portion may be a U-shaped hook that can be hooked to the rail.
- the slide mechanism is fixed to the upper side of the filter frame and is provided on the upper side of the filter plate, and is provided on the upper side of the filter plate so as to be slidable laterally with respect to the guide member.
- a guided member to be joined, The vertical movement restriction means may be formed by engaging the guided member with the guide member.
- the guided member may be a horizontally elongated eyelet provided on the filter cloth, and an engaging portion that engages with the eyelet may be provided at a lower end of the guide member.
- the engagement portion may be a ring that can be engaged with the eyelet.
- the engagement portion may be a U-shaped hook that can be hooked to the eyelet.
- a slide mechanism is provided between the lower side of the filter frame and the lower side of the filter plate to move the filter plate in the lateral direction.
- the slide mechanism is provided on the lower side of the filter frame and extends in the lateral direction of the filter frame, and is provided on the lower side of the filter plate and slidably engages with the guide member in the horizontal direction.
- a guided member The guided member may constitute the elastic member.
- the guide member may be a rail, and the guided member may extend in the vertical direction, have an upper end fixed to the filter plate, and a lower end having an engaging portion that engages with the rail.
- the engagement portion may be a ring through which the rail can be inserted.
- the engaging portion may be a U-shaped hook that can be hooked to the rail.
- the elastic member may be a SUS coil spring.
- a weight member may be further attached to the lower part of the filter cloth, and a tension may be applied downward to the filter cloth by its weight.
- a suction filtration and concentration apparatus includes: Each filtration plate has a filtration concentration tank that contains a treatment liquid containing the object to be concentrated by filtration, and a plurality of filtration plates each having a planar portion extending in the vertical direction and arranged adjacent to each other in the filtration concentration tank.
- a suction means for sucking the filter cloth through the filtration chamber, a bulging means for bulging the filter cloth through the filtration chamber, and a plurality of filter plates are arranged around each of the filter plates.
- a suction filtration concentration device having tension applying means for constantly applying tension to the A filter frame surrounding the filter plate is provided on the outer periphery of the filter plate,
- the tension applying means provided between the lower side of the filter frame and the lower side of the filter plate is an elastic member extending in the vertical direction,
- a slide mechanism is provided between the upper side of the filter frame and the upper side of the filter plate, to move the filter plate in the lateral direction,
- the slide mechanism includes a vertical movement restricting unit that restricts the movement of the filter plate in the vertical direction.
- the filter cloth swells when the filter cloth is swelled to peel the filter concentrate from the filter cloth or when the filter cloth is immersed in sludge for a long period of time.
- the support plate contracts in the horizontal direction as the filter cloth bulges or immerses, and each filter plate tries to move in the horizontal direction.
- a slide mechanism is provided between the upper side of the filter frame and the upper side of the filter plate to move the filter plate in the horizontal direction, the movement of the filter plate in the horizontal direction is restricted. Thus, it is possible to prevent a situation where stress concentrates on the fixing position of the filter cloth and causes breakage of the filter cloth.
- FIG. 1 is a schematic configuration diagram of a suction type filtration concentration apparatus according to the first embodiment of the present invention.
- FIG. 2 is a schematic perspective view showing a state in which a plurality of filter plates are arranged adjacent to each other in the suction filtration and concentration apparatus according to the first embodiment of the present invention.
- FIG. 3 is a schematic side view showing a filter plate in the suction filtration and concentration apparatus according to the first embodiment of the present invention.
- FIG. 4 is a partial plan view showing a state in which a plurality of filter plates are suspended and supported by a sludge tank in the suction filtration and concentration apparatus according to the first embodiment of the present invention.
- FIG. 5 shows a situation in which the filter cloth of the adjacent filter plate swells in the suction filtration and concentration apparatus according to the first embodiment of the present invention
- FIG. It is a conceptual diagram which shows the condition where filtration is performed with the filter cloth of an adjacent filter plate.
- FIG. 6 is a schematic view showing the periphery of the filter plate in the suction filtration and concentration apparatus according to the first embodiment of the present invention.
- the suction-type filtration concentration apparatus 10 includes a sludge tank 12 that stores sludge that is an object of filtration concentration, a plurality of filter plates 14 disposed in the sludge tank 12, and a suction unit that sucks sludge. 16 and a bulging portion 20 for bulging a filter cloth 18 provided on each of the plurality of filter plates 14.
- the sludge tank 12 is a container having a bottomed rectangular cross section, and has a volume capable of installing a plurality of filter plates 14 to be described later.
- a sludge supply / discharge pipe 24 for supplying sludge into the sludge tank 12 communicates with the side wall 22 of the sludge tank 12, and through a sludge supply / discharge valve 26 provided in the middle of the sludge supply / discharge pipe 24.
- a sludge supply / discharge pump 28 capable of forward / reverse operation is connected.
- the sludge supply / discharge valve 26 is opened and the sludge supply / discharge pump 28 is operated to supply the sludge into the sludge tank 12, while the sludge supply / discharge pump 28 is operated in the reverse direction.
- the unconcentrated sludge in the tank 12 can be discharged from the sludge tank 12.
- a concentrated sludge discharge pipe 30 for discharging the concentrated sludge accumulated at the bottom of the sludge tank 12 communicates with the bottom of the sludge tank 12, and a concentrated sludge discharge valve 32 is provided in the middle of the concentrated sludge discharge pipe 30. Is provided. By opening the concentrated sludge discharge valve 32, the concentrated sludge accumulated at the bottom of the sludge tank 12 is discharged to the outside through the concentrated sludge discharge pipe 30 due to gravity drop.
- the plurality of filter plates 14 (14 ⁇ / b> A to 14 ⁇ / b> E) are arranged adjacent to each other with a predetermined distance D in the sludge tank 12 with the flat portion 13 extending in the vertical direction. ing. As the distance D between adjacent filter plates 14 is reduced, the number of filter plates 14 that can be installed in the sludge tank 12 can be increased, thereby increasing the total filtration area. However, as will be described later, it is necessary to swell the filter cloth 18 in order to peel the concentrated sludge adhering to the filter cloth 18 of the filter plate 14. Therefore, the filter cloth 18 comes into contact with the adjacent filter plate 14 and cannot be effectively used as a filter area. Thus, it is good to determine the space
- Each of the plurality of filter plates 14 is connected to a filtrate storage tank 36 installed outside the sludge tank 12 via a distribution pipe 34 at an upper portion thereof, and one end of a filtrate discharge pipe 38 is connected to the filtrate storage tank 36.
- the filtrate discharge pipe 38 is connected in communication and extends vertically downward, and a filtrate discharge valve 40 is provided in the middle.
- Each distribution pipe 34 and the filtrate discharge pipe 38 are connected in an inverted U shape through the filtrate storage tank 36, and the filtrate filtered in the sludge tank 12 is put out of the sludge tank 12 by using the principle of siphon. It is supposed to be discharged.
- a suction pipe 31 is branched and connected to the distribution pipe 34, and a vacuum pump 35 is connected to the suction pipe 31 via a suction valve 33 provided in the middle.
- a vacuum pump 35 is connected to the suction pipe 31 via a suction valve 33 provided in the middle.
- the compressor 46 By operating the compressor 46 with the air inflow valve 44 opened, the compressed air passes through the air inflow pipe 42, the filtrate storage tank 36, and the distribution pipes 34 to the filtration chamber 76 of each filter plate 14.
- the filter cloth 18 When the supplied sludge, which will be described later, is peeled off from the filter cloth 18, the filter cloth 18 is swelled.
- One end of the distribution pipe 34 is connected to a horizontal pipe 15 provided on the upper part of the filter plate 14, and a lower part of the horizontal pipe 15 is divided by an adjacent seam 74, which will be described later, of the filter cloth 18.
- a discharge hole (not shown) is provided for each section. Thereby, for each section of the filter cloth 18, compressed air is supplied by the compressor 46 through the corresponding discharge holes, or siphon type suction is performed by the vacuum pump 35.
- the filter plate 14 includes a filter frame 48, a support plate 50 disposed inside the filter frame 48, a filter cloth 18 in a bag shape so as to accommodate the support plate 50 therein, A plurality of coil springs 54 provided between the filter frame 48 and the support plate 50 are schematically configured.
- the filter frame 48 has a hollow rectangular shape and has both sides 60 and 62 between the upper side 56, the lower side 58, and the upper and lower sides.
- the filter plate 14 is suspended and supported from the inner surface 68 of the sludge tank 12 by both ends of the upper side 56. More specifically, as shown in FIG.
- extension portions 64 are provided at both ends of the upper side 56, respectively, while a pair of guide plates 70 projecting inward on the inner side surface 68 of the sludge tank 12. 72, and an engagement plate 66 fixed to the upper surface of the extension portion 64 with the end portion of the extension portion 64 disposed between the pair of guide plates 70, 72 is provided on the upper surface of the pair of guide plates 70, 72. It is supposed to be placed on. Thereby, each filter plate 14 is suspended and supported from the sludge tank 12. The distance between adjacent filter plates 14 is determined by selecting a pair of guide plates that suspend and support the filter plate 4.
- the distance between adjacent filter plates 14 may be changed as appropriate by selecting a pair of guide plates that suspend and support the filter plate 14 according to the length of the section of the filter cloth 18 that will be described later. .
- the support plate 50 is made of a net or mesh net, has a rectangular shape, and an infinite number of small openings are provided in the support plate 50.
- An uneven portion (not shown) extending in the vertical direction is provided on the surface of the support plate 50, so that the vertical direction of the support plate 50 is between the concave portion of the support plate 50 and the inner surface of the filter cloth 18.
- a plurality of flow paths for the filtrate extending in the direction are formed.
- the support plate 50 is made of resin, as will be described later, the deformation in the plane of the support plate 50 or the flatness of the support plate 50 caused by immersing the filter cloth 18 in sludge is substantially eliminated.
- the filter cloth 18 is preferably made of chemical fiber, particularly nylon.
- the filter cloth 18 is formed by overlapping a pair of rectangular cloth bodies to sew the peripheral edges, or by bending a single rectangular cloth body so that opposing edges overlap each other, and the peripheral edges are separated. It is good to form in a bag shape by sewing.
- a plurality of eyelets 78 are provided around the filter cloth 18, and one end of a coil spring 54 described later is hooked to the eyelets 78.
- a plurality of seams 74 extending in the vertical direction of the sludge tank 12 are provided in the filter cloth 18, and the filter cloth 18 is stitched together with the support plate 50 accommodated therein by each seam 74.
- the filter cloth 18 is divided along the horizontal direction (direction substantially orthogonal to the vertical direction of the sludge tank 12), and a filtration chamber 76 is formed between the inner surface of the filter cloth 18 and the support plate 50 for each section. (See FIG. 5).
- the intervals between the adjacent seams 74 do not need to be uniform, but by arranging the filter plates 14 as close as possible within a range where there is no risk of contact between the adjacent filter plates 14, the filter plate 14 as a whole is arranged. What is necessary is just to set from a viewpoint of ensuring the total filtration area to the maximum.
- the length is set to be longer than the length, so that a margin for bulging when the filter cloth 18 is bulged is provided for each section.
- the filter cloth 18 is sucked through the filtration chamber 76 for each section of the filter cloth 18, so that most of the filter cloth 18 is attracted to the support plate 50.
- a wrinkle-shaped non-contact portion 71 that is in close contact with the support plate 50 but not in close contact with the support plate 50 is formed in the vertical direction.
- the filter cloth 18 is expanded, the pores of the filter cloth 18 are expanded without the filter cloth 18 being excessively stretched, and the normal filtration function is lost, or the filter cloth 18 is blurred. It is possible to prevent this.
- the plurality of coil springs 54 are between the side 60 of the filter frame 48 and the side 61 of the filter cloth 18, and between the side 62 of the filter frame 48 and the side 63 of the filter cloth 18. And between the lower side 58 of the filter frame 48 and the lower side 59 of the filter cloth 18. What is necessary is just to set suitably the space
- the plurality of coil springs 54 are preferably made of SUS from the viewpoint of corrosion resistance, and several tens of the coil springs 54 are arranged around the periphery of the filter plate 14. Instead, it is better to use standard products.
- each filter plate 14 in each filter plate 14, the filter plate 14 is movable in the lateral direction between the upper side 56 of the filter frame 48 and the upper side 57 of the filter cloth 18.
- a slide mechanism 100 is provided, and the slide mechanism 100 includes a vertical movement restriction unit that restricts the movement of the filter plate 14 in the vertical direction.
- the slide mechanism 100 is provided on the upper side 56 of the filter frame 48 and is provided on the guide member 104 extending in the lateral direction of the filter frame 48 and the upper side 57 of the filter plate 14 and is slidable in the lateral direction with respect to the guide member 104.
- the vertical movement restricting means is formed by engaging the guided member 106 with respect to the guide member 104.
- the guide member 104 consists of a single rail.
- the length of the rail is set slightly longer than the lateral length of the filter cloth 18.
- the cross-sectional shape of the rail is arbitrary, such as a polygon or a circle, as long as the filter plate 14 can be moved in the lateral direction via the guided member 106.
- the guided member 106 extends in the vertical direction, has a lower end 108 fixed to the filter cloth 18, and an upper end 110 having an engaging portion 112 that engages with a rail.
- the guided member 106 is made of a material that does not substantially expand or contract in the vertical direction, for example, metal, and is provided in a plurality at a predetermined interval in the lateral direction of the filter plate 14.
- the predetermined interval between the adjacent guided members 106 may be appropriately determined according to the size of the filter plate 14, the amount of concentrated sludge adhering to the filter cloth 18, and the like. In this case, a guided member 106 may be provided for each section of the filter cloth 18.
- the engaging portion 112 is constituted by a ring through which the rail can be inserted, and the size of the ring is preferably small within a range in which the rail can be inserted.
- the engaging portion 112 may be a hook having a U-shaped cross section that can be hooked to the rail. Compared with a ring, in the case of a hook, the movement of the filter plate 14 toward the adjacent filter plate 14 may cause the hook to come off through the opening portion of the hook, while the filter plate 14 is attached to or detached from the rail. It has the advantage that it is easy.
- sludge is supplied into the sludge tank 12. More specifically, with the sludge discharge valve 32 closed, the sludge supply / discharge valve 26 is opened and the sludge supply / discharge pump 28 is operated to remove the sludge to be filtered and concentrated through the sludge supply / discharge pipe 24.
- the sludge tank 12 is supplied to the top level of the filter plate 14.
- the sludge in the sludge tank 12 is prepared to be filtered and concentrated by a siphon method.
- the suction valve 33 by opening the suction valve 33 and operating the vacuum pump 35, the liquid in the filter cloth 18 is sucked into the filtrate storage tank 36 through the distribution pipe 34.
- the filtrate guided into the filtration chamber 76 can be discharged to the outside through the sludge discharge pipe 38 by siphon action. It becomes possible.
- the sludge in the sludge tank 12 is filtered and concentrated. More specifically, the sludge in the sludge tank 12 is sucked toward the outer surface of the filter cloth 18 by the siphon principle, and the moisture in the sludge passes through the filter cloth 18 and is filtered as a filtrate. The sludge, which is guided to the filtration chamber 76 in the cloth 18 and dehydrated and dehydrated and concentrated, adheres to the outer surface of the filter cloth 18. At that time, since the swell margin is provided for each section of the filter cloth 18, most of the filter cloth 18 in each section is attached to the support plate 50 by suction of the filter cloth 18.
- a non-contact portion 71 that is in close contact but not in close contact with the support plate 50 is formed in a wrinkle shape extending in the vertical direction of the filter cloth 18.
- the wrinkle-shaped non-contact portion 71 is newly formed for each section every time it is filtered, and therefore has a small tendency to adversely affect the soundness of the filter cloth, but by using the filter cloth 18 for a long time.
- the filter cloth 18 may have a kind of habit, and the non-contact portion 71 may be formed at the same position each time filtration is performed. In such a case, for example, by adjusting the negative pressure generated in the filtration chamber 76, it is possible to prevent an adverse effect on the filter cloth 18 due to the generation of the non-contact portion 71.
- the filter plate 14 Since tension is always applied to each filter plate 14 from the periphery by the coil spring 54, the filter plate 14 is maintained in a stationary state. Thereby, it is possible to prevent the situation where the concentrated sludge adhering to the outer surface of the filter cloth 18 peels off from the outer surface of the filter cloth 18 due to the filter plate 14 fluttering or wobbling. is there. As the concentrated sludge adheres to the outer surface of the filter cloth 18, the coil spring 54 provided between the lower side 58 of the filter frame 48 and the lower side 59 of the filter plate 14 and extending in the vertical direction is attached.
- the guided member 106 provided in the slide mechanism 100 limits the movement of the filter plate 14 in the vertical direction. That is, the downward movement of the filter plate 14 is limited by the upper end of the ring through which the rail is inserted being locked to the upper surface of the rail. Accordingly, it is possible to prevent a situation in which the filter cloth 18 is slackened due to contraction of the coil spring 54 provided in the lower part of the filter plate 14 and contacts the adjacent filter plate 14.
- unconcentrated sludge in the sludge tank 12 is discharged to the outside of the sludge tank 12. More specifically, the unconcentrated sludge in the sludge tank 12 is opened through the sludge supply / discharge pipe 24 by opening the sludge supply / discharge valve 26 and operating the sludge supply / discharge pump 28 in reverse to the sludge supply. Is discharged outside the sludge tank 12.
- the filter cloth 18 is bulged to peel the concentrated sludge adhering to the filter cloth 18. More specifically, the air inflow valve 44 is opened, and compressed air is supplied from the compressor 46 through the air inflow pipe 42, the filtrate storage tank 36, the distribution pipes 34, and the horizontal pipes 15 into the filtration chambers 76 of the filter plates 14. To do. As a result, the filter cloth 18 whose countless pores are blocked by the concentrated sludge swells away from the support plate 50. At that time, since the filter cloth 18 is integrally stitched to the support plate 50, the support plate 50 contracts in the horizontal direction as the filter cloth 18 bulges, and each filter plate 14 moves in the horizontal direction.
- a slide mechanism 100 is provided between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14 to move the filter plate 14 in the horizontal direction.
- each guided member 106 whose lower end 108 is fixed to the filter plate 14 tries to move in the horizontal direction integrally with the filter plate 14 (left and right direction in FIG. 6). Since the ring provided at each upper end 110 of 106 slides on the rail in a form guided by the rail which is the guide member 104, the filter plate 14 can move in the lateral direction without restriction. It is. From this, it is possible to prevent a situation in which stress is concentrated on the fixing position of the filter cloth 18 and the filter cloth 18 is broken due to the movement of the filter plate 14 in the lateral direction being restricted. Is possible.
- the filter cloth 18 is provided with a swell margin for each section, the filter cloth 18 is prevented from being excessively stretched to prevent the pores from expanding or the filter cloth 18 from being blurred. Is possible.
- the support plate 50 that is integrally stitched with the filter cloth 18 receives a compressive force and tries to shrink in the lateral direction of the support plate 50. By adopting it, the lateral length of the support plate 50 is maintained substantially constant, whereby the tension by the coil spring 54 acting from the side of the support plate 50 can be maintained substantially constant.
- the separated concentrated sludge is discharged to the outside of the sludge tank 12. More specifically, the sludge discharge valve 32 is opened, and the concentrated sludge accumulated on the bottom of the sludge tank 12 by being peeled off from the filter cloth 18 is discharged to the outside of the sludge tank 12 through the concentrated sludge discharge pipe 30 by gravity. .
- the filter cloth 18 is immersed in the sludge for a long time, and thereby swells, whereby the support plate 50 also tries to extend in the lateral direction (left-right direction in FIG. 6).
- the support plate 50 extends in the lateral direction as the filter cloth 18 swells, and each filter plate 14 moves in the lateral direction.
- a slide mechanism 100 is provided between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14 to move the filter plate 14 in the horizontal direction, the filter plate 14 is moved in the horizontal direction.
- Each of the guided members 106 whose lower ends 108 are fixed to the filter plate 14 is moved in the lateral direction integrally with the filter plate 14, and at this time, each upper end 110 of each of the guided members 106 is moved.
- the filter plate 14 can move in the lateral direction without restriction. From this, as in the case of the bulging of the filter cloth 18 described above, stress is concentrated on the fixing position of the filter cloth 18 due to the limited movement of the overfilter plate 14 in the lateral direction. It is possible to prevent such a situation that the filter cloth 18 is broken.
- the support plate 50 since the support plate 50 is hard, the lateral length of the support plate 50 is maintained substantially constant, and thereby the tension by the coil spring 54 acting from the side of the support plate 50 is maintained approximately constant. Is possible.
- the concentrated sludge discharged to the outside of the sludge tank 12 is further concentrated separately by a dehydrator, formed into a cake, and subjected to incineration or landfill disposal.
- the sludge contained in the sludge tank 12 is suction filtered through the filter cloth, so that the water in the sludge passes through the filter cloth and enters the filtration chamber 76.
- the sludge that has been dehydrated adheres to the outer surface of the filter cloth 18 so that the sludge can be filtered and concentrated.
- each of the plurality of filter plates 14 is constantly applied with tension from the periphery by the tension applying means, so that each filter plate 14 is maintained in an immobile stationary state.
- the filter cloth 18 is bulged to peel the concentrated sludge from the filter cloth, the filter cloth 18 is integrally stitched to the support plate 50, so that the filter cloth 18 is supported as the filter cloth 18 bulges.
- the plate 50 contracts in the horizontal direction and each filter plate 14 tries to move in the horizontal direction, but the filter plate 14 is movable in the horizontal direction between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14. Since the slide mechanism 100 is provided, the lateral movement of the filter plate 14 is restricted, so that stress concentrates on the fixing position of the filter cloth 18 and causes the filter cloth 18 to break. It is possible to prevent such a situation.
- the filter cloth 18 swells as the filter cloth 18 is immersed in sludge for a long period of time, the filter cloth 18 is integrally stitched to the support plate 50, so that the filter cloth 18 is swollen.
- the support plate 50 extends in the horizontal direction and each filter plate 14 tries to move in the horizontal direction.
- the filter plate 14 is moved in the horizontal direction between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14. Since the slide mechanism 100 that is movable is provided, stress is concentrated on the fixing position of the filter cloth 18 due to the restriction of the movement of the filter plate 14 in the lateral direction. It is possible to prevent a situation that causes breakage.
- the amount of movement of the filter plate 14 in the lateral direction accompanying the swelling of the filter cloth 18 or the swelling of the filter cloth 18 (S in FIG. 6) is inevitably associated with the increase in the size of the suction type filtration concentration apparatus. growing. Further, as the concentrated sludge adheres to the filter cloth 18, a coil spring 54 provided between the lower side of the filter frame 48 and the lower side of the filter plate 14 extends in the vertical direction. Then, the downward tension acting on the filter cloth 18 tends to decrease, but the vertical movement restriction means 102 provided in the slide mechanism 100 restricts the movement of the filter plate 14 in the vertical direction.
- the vertical tension applied to the filter cloth 18 while ensuring the soundness of the filter cloth 18 when the suction filtration and concentration device is enlarged. Is kept substantially constant, it is possible to prevent slack from occurring in the lower part of the filter cloth 18.
- the length of the guided member 106 is shortened as much as possible, while the position where the rail as the guide member 104 is set as close as possible to the upper side 56 of the filter frame 48 so as to extend above the filter cloth 18. It is possible to secure the length and thus secure the filtration area.
- FIG. 7 is a view similar to FIG. 3 in the suction filtration and concentration apparatus according to the second embodiment of the present invention.
- a weight member 80 is installed in the lower part of the filter plate 14 in each filter plate 14. More specifically, a horizontally long prismatic weight member 80 having a predetermined weight hangs down from the lower portion of the filter plate 14 via a plurality of suspension fittings 82. As shown in FIG. 7 (B), each of the plurality of suspension fittings 82 connects a U-shaped main body 86 having a pair of extending portions 84 parallel to each other and the tips of the pair of extending portions 84. The weight member 80 is suspended from the main body via a coil spring 90. The plurality of suspension fittings 82 are arranged so that the filter frame 48 is interposed between the pair of extending portions 84, and are connected to the filter cloth 18 by passing the connecting rod 88 through the eyelet 78 of the filter cloth 18.
- the filter plate 14 is movable in the lateral direction without being restricted by the slide mechanism 100 as the filter cloth 18 bulges or is immersed. As a result, it is possible to prevent the stress from being concentrated on the fixing portion of the filter cloth 18 and the filter cloth 18 from being broken. Further, if a coil spring is installed at the lower part of the filter plate 14, the weight spring 80 will compress the coil spring excessively due to the weight of the concentrated sludge that gradually adheres to the surface of the filter cloth 18 during filtration. Since it becomes possible to always pull the filter cloth 18 downward, it is possible to prevent the filter cloth 18 from slackening due to the adhesion of concentrated sludge. Furthermore, since the filter frame 48 is disposed so as to be interposed between the pair of extending portions 84, the filter plate 14 contacts the pair of extending portions 84, thereby facing the filter plate 14 adjacent to the filter plate 14. It is also possible to prevent excessive oscillation.
- FIG. 8 is a view similar to FIG. 6 in the suction type filtration concentration apparatus according to the third embodiment of the present invention.
- this embodiment is characterized in that a slide mechanism 100 different from the first embodiment or the second embodiment is adopted. That is, in the present embodiment, in each filter plate 14, the slide mechanism 100 is fixed to the upper side 56 of the filter frame 48, and the plurality of guide members 202 extending downward from the filter frame 48 and the upper side 57 of the filter cloth 18. And a guided member 204 that is slidably engaged with the guide member 202 in the lateral direction.
- the vertical movement restricting means is configured by the guided member 204 engaging with the guide member 202. ,It is formed.
- the guide member 202 is made of a material that does not substantially expand and contract in the vertical direction, for example, metal, and a plurality of guide members 202 are provided in the lateral direction of the filter plate 14 at a predetermined interval.
- the predetermined interval between the adjacent guide members 202 may be appropriately determined according to the size of the filter plate 14, the amount of concentrated sludge adhering to the filter cloth 18, and the like.
- a guide member 202 may be provided for each section of the filter cloth 18. From the viewpoint of maximizing the filtration area of the filter plate 14 in the limited space in the sludge tank 12, it is desirable that the length of the guide member 202 in the vertical direction is as short as possible.
- the guided member 204 is a plurality of horizontally elongated eyelets provided on the upper portion of the filter cloth 18, and an engaging portion 208 that engages with the eyelet is provided at the lower end 206 of the guide member 202.
- the horizontal length of each eyelet is set to be longer than the amount of horizontal movement of the filter plate 14 when the filter cloth 18 bulges or is immersed. In this case, the direction of the horizontal movement of the filter plate 14 when the filter cloth 18 bulges is opposite to the direction of the horizontal movement of the filter plate 14 when the filter cloth 18 is immersed.
- the engaging portion 208 is preferably arranged at the substantially central portion in the lateral direction of the corresponding eyelet so that the filter plate 14 can move without restriction with respect to both movements.
- the engagement portion 208 is preferably a ring that can be engaged with the eyelet, but it may be a U-shaped hook that can be hooked with respect to the eyelet. According to such a configuration, when the filter cloth 18 is swelled in order to peel the concentrated sludge from the filter cloth, the filter cloth 18 is integrally stitched to the support plate 50, thereby the filter cloth 18. As the plate bulges, the support plate 50 contracts in the horizontal direction and the filter plates 14 try to move in the horizontal direction. However, the filter plate is interposed between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14.
- the horizontally elongated eyelets can move in the horizontal direction while engaging with the corresponding engaging portions 208, thereby the horizontal direction of the filter plate 14. It is possible to prevent a situation in which stress concentrates on the fixed position of the filter cloth 18 and causes the filter cloth 18 to break due to the limited movement to the filter cloth 18.
- the filter cloth 18 swells as the filter cloth 18 is immersed in sludge for a long period of time, the filter cloth 18 is integrally stitched to the support plate 50, so that the filter cloth 18 is swollen.
- the support plate 50 extends in the horizontal direction and each filter plate 14 tries to move in the horizontal direction, but the movement of the filter plate 14 in the horizontal direction is restricted as in the case where the filter cloth 18 bulges. As a result, it is possible to prevent a situation in which stress concentrates on the fixing position of the filter cloth 18 and causes the filter cloth 18 to break.
- the coil spring 54 provided between the lower side 58 of the filter frame 48 and the lower side 59 of the filter plate 14 and extending in the vertical direction is attached to the concentrated sludge.
- the downward tension acting on the filter cloth 18 tends to decrease, but since the downward movement of the filter plate 14 is limited by the guide member 202, it is provided at the lower part of the filter plate 14.
- the coil spring 54 contracts, the slack of the filter cloth 18 is caused, and it is possible to prevent a situation in which the filter cloth 18 contacts the adjacent filter plate 14.
- FIG. 9 is a view similar to FIG. 6 in the suction filtration and concentration apparatus according to the fourth embodiment of the present invention.
- each filter plate 14 has a slide mechanism 100 ⁇ / b> B that can move the filter plate 14 in the horizontal direction by using a lower side 58 of the filter frame 48 and a lower side of the filter cloth 18.
- a slide mechanism 100C, D that allows the filter plate 14 to move in the vertical direction is provided between the left side 60 of the filter frame 48 and the left side 61 of the filter cloth 18 and the filter frame. It is in the point provided between the right side 62 of 48 and the right side 63 of the filter cloth 18.
- the slide mechanism 100B is substantially the same as the slide mechanism 100A provided between the upper side 56 of the filter frame 48 and the upper side 57 of the filter plate 14 in the first embodiment.
- a guided member 106 provided on the lower side 59 of the filter cloth 18 and slidably engaged with the guide member 104 in the lateral direction.
- the guide member 104 consists of a single rail.
- the length of the rail is set slightly longer than the lateral length of the filter cloth 18.
- the cross-sectional shape of the rail is arbitrary, such as a polygon or a circle, as long as the filter plate 14 can be moved in the lateral direction via the guided member 106.
- the guided member 106 has an engaging portion 112 that extends in the vertical direction, has an upper end fixed to the filter cloth 18, and engages a rail at the lower end.
- the guided member 106 is a coil spring, and a plurality of guided members 106 are provided in the lateral direction of the filter plate 14 at a predetermined interval.
- the predetermined interval between the adjacent guided members 106 may be appropriately determined according to the size of the filter plate 14, the amount of concentrated sludge adhering to the filter cloth 18, and the like.
- a guided member 106 may be provided for each section of the filter cloth 18. From the viewpoint of maximizing the filtration area by the filter plate 14 in the limited space in the sludge tank 12, the length in the vertical direction of the guided member 106 is preferably as short as possible.
- the engaging portion 112 is constituted by a ring through which the rail can be inserted, and the size of the ring is preferably small within a range in which the rail can be inserted.
- the engaging portion 112 may be a hook having a U-shaped cross section that can be hooked to the rail. Compared with a ring, in the case of a hook, the movement of the filter plate 14 toward the adjacent filter plate 14 may cause the hook to come off through the opening portion of the hook, while the filter plate 14 is attached to or detached from the rail. It has the advantage that it is easy.
- a guide member 104 extending in the vertical direction is provided on the left side 60 of the filter frame 48, and one end is fixed to the filter plate 14 on the left side 61 of the filter cloth 18.
- a guided member 106 having a ring that can be inserted into the rail is provided at the other end, and is a guide member 104 via a ring provided at the tip of the guided member 106 when the filter plate 114 moves in the vertical direction. While being slidably guided by the rail, it can move smoothly.
- the guided member 106 is a coil spring 54 as in the case of the slide mechanism 100B. Since the same applies to the slide mechanism 100D provided on the right side, the description thereof is omitted.
- the slide mechanisms 100A and 100B provided above and below the filter plate 14 are used.
- the filter plate 14 can smoothly move in the lateral direction.
- the coil springs 54 provided on both sides of the filter plate 14 are extended obliquely downward. This prevents the filter plate 14 from moving smoothly downward.
- a slide mechanism may be provided only on one side of the filter plate 14, or a slide mechanism may be provided on a part of the side of the filter plate 14.
- the target of filtration and concentration includes incineration ash, milk, juice, and the like contained in an alkaline solution.
- the target of filtration and concentration includes incineration ash, milk, juice, and the like contained in an alkaline solution.
- the suction type filtration concentration apparatus according to the invention is applicable to these.
- each filter plate 14 is provided with a plurality of seams extending in the vertical direction, so that the filter cloth 18 is divided along the horizontal direction, and an allowance margin is provided for each division.
- the present invention is not limited thereto, and the filter cloth 18 may not be divided, and a single filtration chamber 76 may be provided on each side of the support plate 50.
- the support plate 50 is substantially deformed so as to extend in the plane of the support plate 50 due to the filter cloth 18 being immersed in sludge or to destroy the flatness of the support plate 50.
- the present invention is not limited thereto, and the suction filtration and concentration apparatus according to the present invention can be applied to a soft resin material that causes such expansion and contraction or deformation.
- the siphon type suction filtration and concentration apparatus 10 has been described.
- the present invention is not limited thereto, and as long as the negative pressure value is set in consideration of the influence on the filter cloth 18, the suction pump is used.
- a suction-type suction filtration and concentration apparatus 10 using the above may be used.
- the coil spring 54 is employed as the elastic member.
- the elastic member is not limited thereto, and may be a rubber plate or the like as long as a desired tension can be achieved.
- the suction filtration and concentration apparatus is applicable not only to water treatment system technical fields including clean water, middle water and sewage but also to a wide range of technical fields such as food fields and chemical industry fields. Of these, it is particularly useful when a suction filtration and concentration device applied in a process for concentrating sludge generated in a water treatment process such as a water purification plant or a sewage treatment plant is enlarged.
- FIG. 1 It is a schematic block diagram of the suction type filtration concentration apparatus which concerns on 1st Embodiment of this invention.
- the suction type filtration concentration apparatus concerning a 1st embodiment of the present invention it is a schematic perspective view showing the state where a plurality of filtration plates are arranged adjacent. It is a schematic side view which shows the filter plate in the suction type filtration concentration apparatus which concerns on 1st Embodiment of this invention.
- the suction type filtration concentration apparatus concerning a 1st embodiment of the present invention it is a partial top view showing the state where a plurality of filter plates are suspended and supported by a sludge tank.
- FIG. 1st embodiment of the present invention In the suction filtration and concentration apparatus according to the first embodiment of the present invention, FIG.
- FIG. 5 (A) shows a situation in which the filter cloth of the adjacent filter plate is swollen
- FIG. 5 (B) is the adjacent filter plate.
- FIG. 5 (B) is the adjacent filter plate.
- FIG. 5 (B) shows the condition where filtration is performed with the filter cloth of.
- the suction type filtration concentration device concerning a 1st embodiment of the present invention, it is a schematic diagram showing the circumference of a filter board. It is a figure similar to FIG. 3 in the suction type filtration concentration apparatus which concerns on 2nd Embodiment of this invention. It is a figure similar to FIG. 6 in the suction type filtration concentration apparatus which concerns on 3rd Embodiment of this invention. It is a figure similar to FIG. 6 in the suction type filtration concentration apparatus which concerns on 4th Embodiment of this invention.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Filtration Of Liquid (AREA)
- Treatment Of Sludge (AREA)
Abstract
Description
この吸引式濾過濃縮装置は、濾過濃縮対象である汚泥を収容する汚泥槽と、それぞれ汚泥槽の上下方向に延び、汚泥槽内で互いに隣接して整列する複数の濾過板とを有する。各濾過板は、支持板と、支持板に対して一体的に縫合され、支持板を収容し、内部に濾過室を形成する袋状の濾布とを有し、各濾過板の周囲を囲むように固定枠が設けられている。この濾過室には、濾液排出管が連通して設けられ、濾液排出管を通じて濾液を排出するようにしている。さらに、濾過室を通じて濾布を吸引する吸引部と、濾過室を通じて濾布を膨出させる膨出部とが設けられるとともに、複数の濾過板のそれぞれに対して常時張力を付加するコイルスプリングが、各濾過板の周囲に亘って、各濾過板と対応する固定枠との間に配置されている。
一方、濃縮汚泥の回収の際、濾過室を通じて濾布の内表面に向かって圧搾空気を供給することにより、濾布が膨出し、それにより濾布の外表面に付着した濃縮汚泥を剥離させ、汚泥槽の底に溜まった濃縮汚泥を排出し、別途機械脱水処理を行うことにより、ケーキとして焼却あるいは埋立処分することが可能である。このような汚泥の濾過濃縮処理により、加圧あるいは真空等による機械脱水処理におけるエネルギー負荷を軽減することが可能である。
しかしながら、このような従来の吸引式濾過濃縮装置を大型化するに伴って、以下のような技術的問題が引き起こされる。
より詳細には、上記吸引式濾過濃縮装置において、濾過板の上部と下部にはそれぞれ、コイルスプリングが設置され、濾過板に対して常時上下方向に張力を付加し、濾布の弛みを防止するようにしている。
しかしながら、濃縮汚泥が濾布の表面に付着することに伴い、その重みで上部コイルスプリングが伸長する一方、下部コイルスプリングが収縮する。これにより、下部コイルスプリングの張力は低下し、濾布の下部に弛みが生じ、場合により隣接する濾過板の表面に接触し、濾過面積を実質的に減少したり、あるいは濃縮汚泥の形成を阻害したりする。
これを防止するために、濾過板の上部に、上部コイルスプリングの代わりに、連結部材を用いて濾過板を固定することが考えられる。より具体的には、コイルスプリングとは異なり上下方向の伸縮が実質的に生じない連結部材の上端を固定枠の上辺に固定する一方、連結部材の下端を濾過板の上辺に固定する。これによれば、連結部材自体が濾過板の上下方向への移動を制限することから、濾布に付着した濃縮汚泥の重みにより、濾布の下部に弛みが生じるのを防止することが可能となる。
このような各濾過板の横方向への移動に伴ない、連結部材による濾布の固定位置に応力が集中して、濾布の破断を引き起こすことがある。
このような濾布の破断を防止するのに、連結部材の代わりに、吊金具であるシャックルを採用することも考えられる。より具体的には、シャックルの上端を固定枠の上辺に横方向に揺動自在に吊り下げ、一方シャックルの下端を濾過板の上辺に固定する。これによれば、濾布の膨出、あるいは浸漬に伴う濾過板の横方向への移動の際、シャックルがその上端を中心にして揺動可能であることから、濾布の固定位置に応力が集中するのを回避し、以て濾布の破断を防止することが可能である。
濾過濃縮対象である汚泥を収容する汚泥槽と、それぞれ平面部が上下方向に延び、該汚泥槽内で互いに隣接して整列する複数の濾過板とを有し、各濾過板は、網目状の支持板と、支持板に対して一体的に縫合され、該支持板を収容する袋状の濾布とを有し、それにより濾布の内部には濾過室が形成され、さらに、該濾過室を通じて前記濾布を吸引する吸引手段と、該濾過室を通じて前記濾布を膨出させる膨出手段と、複数の濾過板のそれぞれの周囲に亘って配置され、各濾過板に対して常時張力を付加する張力付加手段とを有する、吸引式濾過濃縮装置において、
前記濾過板の外周には、前記濾過板を囲む濾過枠が設けられ、
前記濾過枠の下辺と前記濾過板の下辺との間に設けられる前記張力付加手段は、上下方向に延びる弾性部材であり、
前記濾過枠の上辺と前記濾過板の上辺との間に、前記濾過板を横方向へ可動とするスライド機構が設けられ、
該スライド機構は、前記濾過板の上下方向への移動を制限する上下移動制限手段を有する、構成としている。
濃縮汚泥を濾布から剥離させるために濾布を膨出させる際、濾布が支持板に対して一体的に縫合されていることにより、濾布の膨出に伴って、支持板が横方向に収縮し各濾過板は横方向に移動しようとするが、濾過枠の上辺と濾過板の上辺との間に、濾過板を横方向へ可動とするスライド機構が設けられていることから、濾過板の横方向への移動が制限されることに起因して、濾布の固定位置に応力が集中して、濾布の破断を引き起こすような事態を防止することが可能である。
このような濾布の膨出あるいは濾布の膨潤に伴う濾過板の横方向への移動量は、吸引式濾過濃縮装置の大型化に伴って、必然的に大きくなる。
前記上下移動制限手段は、前記被案内部材が前記案内部材に対して係合することにより、形成されるのがよい。
さらに、前記案内部材は、レールであり、前記被案内部材は、上下方向に延び、下端が前記濾過板に固定され、上端に該レールに係合する係合部を有するのがよい。
さらにまた、前記被案内部材は、前記濾過板の横方向に互いに所定間隔を隔てて、複数設けられるのがよい。
加えて、前記係合部は、前記レールが挿通可能なリングでもよい。
また、前記係合部は、前記レールに対してフック可能な断面コの字状のフックでもよい。
前記上下移動制限手段は、前記被案内部材が前記案内部材に対して係合することにより、形成されるのがよい。
さらにまた、前記被案内部材は、前記濾布に設けられた横長の鳩目であり、前記案内部材の下端には、該鳩目に係合する係合部が設けられているのがよい。
加えて、前記係合部は、前記鳩目に対して係合可能なリングでもよい。
さらに、前記係合部は、前記鳩目に対してフック可能な断面コの字状のフックでもよい。
該スライド機構は、前記濾過枠の下辺に設けられ、前記濾過枠の横方向に延びる案内部材と、前記濾過板の下辺に設けられ、該案内部材に対して横方向に摺動自在に係合する被案内部材とを有し、
該被案内部材が、前記弾性部材を構成するのがよい。
さらに、前記案内部材は、レールであり、前記被案内部材は、上下方向に延び、上端が前記濾過板に固定され、下端に該レールに係合する係合部を有するのがよい。
さらにまた、前記係合部は、前記レールが挿通可能なリングでもよい。
また、前記係合部は、前記レールに対してフック可能な断面コの字状のフックでもよい。
さらに、前記濾布の下部には、おもり部材がさらに取り付けられ、その重さにより前記濾布に対して下方に張力が加えられるのでもよい。
濾過濃縮対象物を含有する処理液を収容する濾過濃縮槽と、それぞれ平面部が上下方向に延び、該濾過濃縮槽内で互いに隣接して整列する複数の濾過板とを有し、各濾過板は、網目状の支持板と、支持板に対して一体的に縫合され、該支持板を収容する袋状の濾布とを有し、それにより濾布の内部には濾過室が形成され、さらに、該濾過室を通じて前記濾布を吸引する吸引手段と、該濾過室を通じて前記濾布を膨出させる膨出手段と、複数の濾過板のそれぞれの周囲に亘って配置され、各濾過板に対して常時張力を付加する張力付加手段とを有する、吸引式濾過濃縮装置において、
前記濾過板の外周には、前記濾過板を囲む濾過枠が設けられ、
前記濾過枠の下辺と前記濾過板の下辺との間に設けられる前記張力付加手段は、上下方向に延びる弾性部材であり、
前記濾過枠の上辺と前記濾過板の上辺との間に、前記濾過板を横方向へ可動とするスライド機構が設けられ、
該スライド機構は、前記濾過板の上下方向への移動を制限する上下移動制限手段を有する、構成としている。
図1は、本発明の第1実施形態に係る吸引式濾過濃縮装置の概略構成図である。図2は、本発明の第1実施形態に係る吸引式濾過濃縮装置において、複数の濾過板が隣接して配置されている状態を示す概略斜視図である。図3は、本発明の第1実施形態に係る吸引式濾過濃縮装置における濾過板を示す概略側面図である。図4は、本発明の第1実施形態に係る吸引式濾過濃縮装置において、複数の濾過板が汚泥槽により懸架支持されている状態を示す部分平面図である。図5は、本発明の第1実施形態に係る吸引式濾過濃縮装置において、図5(A)は、隣合う濾過板の濾布が膨出している状況を示し、図5(B)は、隣合う濾過板の濾布により濾過が行われている状況を示す概念図である。図6は、本発明の第1実施形態に係る吸引式濾過濃縮装置において、濾過板まわりを示す概略図である。
汚泥槽12は、有底の矩形断面の容器であり、後に説明する複数の濾過板14を内部に設置可能な容積を有する。汚泥槽12の側壁22には、汚泥槽12内に汚泥を供給する汚泥供給/排出管24の一端が連通し、汚泥供給/排出管24の途中に設けられた汚泥供給/排出弁26を介して、正逆作動可能な汚泥供給/排出ポンプ28が接続されている。これにより、汚泥供給/排出弁26を開き、汚泥供給/排出ポンプ28を作動することにより、汚泥を汚泥槽12内に供給する一方、汚泥供給/排出ポンプ28を逆に作動することにより、汚泥槽12内の未濃縮の汚泥を汚泥槽12から排出することが可能なようにしている。また、汚泥槽12の底部には、汚泥槽12の底に溜まった濃縮汚泥を排出する濃縮汚泥排出管30の一端が連通し、濃縮汚泥排出管30の途中には、濃縮汚泥排出弁32が設けられている。濃縮汚泥排出弁32を開くことにより、汚泥槽12の底に溜まった濃縮汚泥が重力落下により、濃縮汚泥排出管30を通じて外部に排出されるようにしている。
濾液貯留槽36を通じて各分配管34と濾液排出管38とが、逆U字状に接続されており、サイフォンの原理を利用して、汚泥槽12内で濾過された濾液を汚泥槽12外に排出するようにしてある。さらに、分配管34には、吸引管31が分岐して接続され、吸引管31には、途中に設けられた吸引弁33を介して真空ポンプ35が接続している。これにより、吸引弁33を開いた状態で、真空ポンプ35を作動することにより、汚泥槽12内の処理すべき液を分配管34内に吸引し、サイフォンの原理を利用して、濾液排出管38を通じて、濾液を外部に排出する準備を行うことができるようにしている。
一方、濾液貯留槽36には、空気流入管42の一端が連通して接続され、その途中に設けられた空気流入弁44を介してコンプレッサー46に接続されている。これにより、空気流入弁44を開いた状態で、コンプレッサー46を作動することにより、圧搾空気が空気流入管42、濾液貯留槽36、および各分配管34を通じて、各濾過板14の濾過室76に供給され、後に説明する濃縮汚泥を濾布18から剥離する際、濾布18を膨出させるようにしている。
なお、分配管34の一端は、濾過板14の上部に設けられた水平管15に接続され、この水平管15の下部には、後に説明する隣合う縫い目74により区画される、濾布18の区分ごとに、排出孔(図示せず)が設けられている。これにより、濾布18の区分ごとに、対応する排出孔を通じて、コンプレッサー46により圧搾空気を供給したり、あるいは真空ポンプ35によりサイフォン式の吸引を行うようにしている。
図3に示すように、濾過板14は、濾過枠48と、濾過枠48の内部に配置された支持板50と、支持板50を内部に収容するように袋状とした濾布18と、濾過枠48と支持板50との間に設けられた複数のコイルスプリング54とから概略構成されている。濾過枠48は、中空の矩形形状をなし、上辺56、下辺58および上下辺との間の両側辺60、62を有する。濾過板14は、上辺56の両端部により汚泥槽12の内側面68より懸架支持されている。より詳細には、図4に示すように、上辺56の両端部にはそれぞれ、延長部64が設けられる一方、汚泥槽12の内側面68には、内部に向かって突出する一対のガイド板70,72が設けられ、延長部64の端部を一対のガイド板70,72の間に配置して、延長部64の上面に固定された係合板66が、一対のガイド板70,72の上面に載置されるようにしてある。これにより、各濾過板14は、汚泥槽12から懸架支持されるようにしている。濾過板4を懸架支持する一対のガイド板の選択により、隣合う濾過板14同士の間隔が決定されるが、たとえば、濃縮汚泥の濾布18への付着量、吸引による負圧の大きさ、後に説明する濾布18の横方向の区分長さ等に応じて、濾過板14を懸架支持する一対のガイド板を選択することにより、隣合う濾過板14の間隔を適宜変えるようにしてもよい。
濾布18には、汚泥槽12の上下方向に延びる縫い目74が複数設けられ、各縫い目74により、濾布18はその内部に収容される支持板50と一体的に縫合されている。それにより濾布18は、横方向(汚泥槽12の上下方向にほぼ直交する方向)に沿って区分され、区分ごとに、濾布18の内面と支持板50との間に濾過室76が形成されるようにしている(図5参照)。隣合う縫い目74の間隔は、均等である必要はないが、隣接する濾過板14同士が接触する危険がない範囲で濾過板14同士を極力近接して配置することにより、濾過板14全体としての総濾過面積を最大限に確保する観点から、設定すればよい。
さらに、濾布18の隣合う縫い目74で区分される各区分ごとに、濾布18の横方向の長さが、その上下方向全体に亘って、この区分に対応する支持板50の横方向の長さより長く設定されており、それにより区分ごとに、濾布18を膨出させる際の膨出余裕しろが設けられている。これにより、図5(B)に示すように、濾過時には、濾布18の区分ごとに、濾過室76を通じて濾布18が吸引されることにより、濾布18の大部分は、支持板50に密着する一方、支持板50に密着しないしわ状の非密着部分71がその上下方向に形成される。一方、濾布18を膨出させる際、濾布18が過度に張ることなしに、濾布18の細孔が拡げられて正常な濾過機能を喪失したり、あるいは濾布18がやぶけたりするのを未然に防止することが可能である。
まず、汚泥槽12内に汚泥を供給する。より詳細には、汚泥排出弁32を閉じた状態で、汚泥供給/排出弁26を開き、汚泥供給/排出ポンプ28を作動することにより、汚泥供給/排出管24を通じて濾過濃縮対象である汚泥を、濾過板14の頂部のレベルまで汚泥槽12内に供給する。
次いで、汚泥槽12内の汚泥をサイフォン式により濾過濃縮する準備を行う。より詳細には、吸引弁33を開き、真空ポンプ35を作動することにより、濾布18内の液体が、分配管34を通じて濾液貯留槽36内に吸引される。分配管34の濾過板14側の端部と、濾液貯留槽36とのレベル差に応じて、サイフォン作用により、濾過室76内に導かれた濾液を汚泥排出管38を通じて外部に排出することが可能となる。
濃縮汚泥が濾布18の外表面に付着することに伴い、濾過枠48の下辺58と濾過板14の下辺59との間に設けられている、上下方向に延びるコイルスプリング54が、付着した濃縮汚泥の重さで収縮し、濾布18に作用する下向きの張力が低下しようとするが、スライド機構100が備える被案内部材106により、濾過板14の上下方向への移動が制限される。すなわち、濾過板14の下方への移動は、レールが挿通するリングの上端がレールの上面に係止することにより、制限される。これにより、濾過板14の下部に設けたコイルスプリング54の収縮に伴い、濾布18の弛みが引き起こされ、隣接する濾過板14に接触するような事態を防止することが可能である。
以上で、汚泥の濾過濃縮作業が完了する。
濾布18は、長時間汚泥中に浸漬され、それにより膨潤し、それにより支持板50も横方向に伸長しようとする(図6において左右方向)。その際、濾布18が支持板50に対して一体的に縫合されていることにより、濾布18の膨潤に伴って、支持板50が横方向に伸長し各濾過板14は横方向に移動しようとするが、濾過枠48の上辺56と濾過板14の上辺57との間に、濾過板14を横方向へ可動とするスライド機構100が設けられていることから、濾過板14が横方向へ移動する際、下端108が濾過板14に固定された各々の被案内部材106は、濾過板14と一体で横方向へ移動しようとするが、その際、被案内部材106の各々の上端110に設けられたリングが、案内部材104であるレールに案内される形態で、レール上を摺動することから、濾過板14は制約なしに横方向へ移動することが可能である。このことから、前述の濾布18の膨出の場合と同様に、過濾過板14の横方向への移動が制限されることに起因して、濾布18の固定位置に応力が集中して、濾布18の破断を引き起こすような事態を防止することが可能である。
汚泥槽12の外部に排出された濃縮汚泥は、別途脱水機によりさらに濃縮されて、ケーキ状に形成され、焼却あるいは埋立処分に付される。
濃縮汚泥を濾布から剥離させるために濾布18を膨出させる際、濾布18が支持板50に対して一体的に縫合されていることにより、濾布18の膨出に伴って、支持板50が横方向に収縮し各濾過板14は横方向に移動しようとするが、濾過枠48の上辺56と濾過板14の上辺57との間に、濾過板14を横方向へ可動とするスライド機構100が設けられていることから、濾過板14の横方向への移動が制限されることに起因して、濾布18の固定位置に応力が集中して、濾布18の破断を引き起こすような事態を防止することが可能である。
このような濾布18の膨出あるいは濾布18の膨潤に伴う濾過板14の横方向への移動量は(図6におけるS)、吸引式濾過濃縮装置の大型化に伴って、必然的に大きくなる。
また、濃縮汚泥が濾布18に付着することに伴い、濾過枠48の下辺と濾過板14の下辺との間に設けられている、上下方向に延びるコイルスプリング54が、付着した濃縮汚泥の重さで収縮し、濾布18に作用する下向きの張力が低下しようとするが、スライド機構100が備える上下移動制限手段102により、濾過板14の上下方向への移動が制限されることから、濾過板14の下部に設けたコイルスプリング54の収縮に伴い、濾布18の弛みが引き起こされ、隣接する濾過板14に接触するような事態を防止することが可能である。このような濃縮汚泥の濾布18への付着に伴うコイルスプリング54の収縮量は、吸引式濾過濃縮装置の大型化に伴って濃縮汚泥の付着量が多くなることから、必然的に大きくなる。
案内部材202は、コイルスプリングと異なり、実質的に上下方向に伸縮を生じない材質、たとえば金属製であり、濾過板14の横方向に互いに所定間隔を隔てて複数設けられている。隣り合う案内部材202の所定間隔は、濾過板14の大きさ、濾布18に付着する濃縮汚泥の量等に応じて、適宜定めればよい。この場合、濾布18の各区分ごとに案内部材202を設けてもよい。汚泥槽12内の限られたスペースにおいて、濾過板14の濾過面積を最大限に確保する観点から、案内部材202の上下方向の長さは、極力短いのが望ましい。
係合部208は、鳩目に対して係合可能なリングが好ましいが、鳩目に対してフック可能な断面コの字状のフックでもよい。
このような構成によれば、濃縮汚泥を濾布から剥離させるために濾布18を膨出させる際、濾布18が支持板50に対して一体的に縫合されていることにより、濾布18の膨出に伴って、支持板50が横方向に収縮し各濾過板14は横方向に移動しようとするが、濾過枠48の上辺56と濾過板14の上辺57との間に、濾過板14を横方向へ可動とするスライド機構100が設けられていることから、横長の鳩目が対応する係合部208に係合しながら横方向に移動可能であり、それにより濾過板14の横方向への移動が制限されることに起因して、濾布18の固定位置に応力が集中して、濾布18の破断を引き起こすような事態を防止することが可能である。
また、濃縮汚泥が濾布18に付着することに伴い、濾過枠48の下辺58と濾過板14の下辺59との間に設けられている、上下方向に延びるコイルスプリング54が、付着した濃縮汚泥の重さで収縮し、濾布18に作用する下向きの張力が低下しようとするが、濾過板14の下方への移動が案内部材202により制限されることから、濾過板14の下部に設けたコイルスプリング54の収縮に伴い、濾布18の弛みが引き起こされ、隣接する濾過板14に接触するような事態を防止することが可能である。
右側辺に設けたスライド機構100Dについても、同様であるので、その説明は省略する。
なお、変形例として、濾過板14の片側にのみスライド機構を設けたり、濾過板14の側辺において、その一部にスライド機構を設けたりしてもよい。
また、第1実施形態においては、各濾過板14において、上下方向に延びる縫い目を複数設けることにより、濾布18が横方向に沿って区分され、各区分ごとに膨出余裕しろを設けている場合を説明したが、それに限定されることなく、濾布18を区分せず支持板50の各側に単一の濾過室76を設けるのでもよい。
さらに、第1実施形態においては、支持板50について、濾布18を汚泥に浸漬することに伴う支持板50の平面内の伸長あるいは支持板50の平面性をくずすような変形が実質的に生じず、かつ濾布18を膨出させることに伴う支持板50の平面内の収縮あるいは支持板50の平面性をくずすような変形が実質的に生じないような硬質の樹脂製材質である場合を説明したが、それに限定されることなく、本発明に係る吸引式濾過濃縮装置は、このような伸縮あるいは変形が生じるような軟質の樹脂製材質にも適用可能である。
さらにまた、第1実施形態においては、サイフォン式の吸引式濾過濃縮装置10を説明したが、それに限定されることなく、濾布18に対する影響を考慮して負圧値を設定する限り、吸引ポンプを利用した吸引式の吸引式濾過濃縮装置10でもよい。また、第1実施形態においては、弾性部材として、コイルスプリング54を採用したが、これに限定されることなく、所望の張力を奏することが可能である限り、ゴム板等でもよい。
D 間隔
S 移動量
10 吸引式濾過濃縮装置
12 汚泥槽
14 濾過板
15 水平管
16 吸引部
18 濾布
20 膨出部
22 側壁
24 汚泥供給/排出管
26 汚泥供給/排出弁
30 濃縮汚泥排出管
32 濃縮汚泥排出弁
34 分配管
35 真空ポンプ
36 濾液貯留槽
42 空気流入管
44 空気流入弁
46 コンプレッサー
50 支持板
54 コイルスプリング
56 上辺
58 下辺
60、62 側辺
71 非密着部
74 縫い目
76 濾過室
78 鳩目
80 おもり部材
82 吊り金具
84 延出部
86 本体
88 連結棒
90 スプリング
100 スライド機構
104 案内部材
106 被案内部材
108 下端
110 上端
112 係合部
202 案内部材
204 被案内部材
206 下端
208 係合部
Claims (17)
- 濾過濃縮対象である汚泥を収容する汚泥槽と、それぞれ平面部が上下方向に延び、該汚泥槽内で互いに隣接して整列する複数の濾過板とを有し、各濾過板は、網目状の支持板と、支持板に対して一体的に縫合され、該支持板を収容する袋状の濾布とを有し、それにより濾布の内部には濾過室が形成され、さらに、該濾過室を通じて前記濾布を吸引する吸引手段と、該濾過室を通じて前記濾布を膨出させる膨出手段と、複数の濾過板のそれぞれの周囲に亘って配置され、各濾過板に対して常時張力を付加する張力付加手段とを有する、吸引式濾過濃縮装置において、
前記濾過板の外周には、前記濾過板を囲む濾過枠が設けられ、
前記濾過枠の下辺と前記濾過板の下辺との間に設けられる前記張力付加手段は、上下方向に延びる弾性部材であり、
前記濾過枠の上辺と前記濾過板の上辺との間に、前記濾過板を横方向へ可動とするスライド機構が設けられ、
該スライド機構は、前記濾過板の上下方向への移動を制限する上下移動制限手段を有する、
ことを特徴とする吸引式濾過濃縮装置。 - 前記スライド機構は、前記濾過枠の上辺に設けられ、前記濾過枠の横方向に延びる案内部材と、前記濾過板の上辺に設けられ、該案内部材に対して横方向に摺動自在に係合する被案内部材とを有し、
前記上下移動制限手段は、前記被案内部材が前記案内部材に対して係合することにより、形成される、請求項1に記載の吸引式濾過濃縮装置。 - 前記案内部材は、レールであり、前記被案内部材は、上下方向に延び、下端が前記濾過板に固定され、上端に該レールに係合する係合部を有する、請求項2に記載の吸引式濾過濃縮装置。
- 前記被案内部材は、前記濾過板の横方向に互いに所定間隔を隔てて、複数設けられる、請求項2または3に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記レールが挿通可能なリングである、請求項3に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記レールに対してフック可能な断面コの字状のフックである、請求項3に記載の吸引式濾過濃縮装置。
- 前記スライド機構は、前記濾過枠の上辺に固定され、該濾過枠から下方に延びる案内部材と、前記濾過板の上辺に設けられ、前記案内部材に対して横方向に摺動自在に係合する被案内部材とを有し、
前記上下移動制限手段は、前記被案内部材が前記案内部材に対して係合することにより、形成される、請求項1に記載の吸引式濾過濃縮装置。 - 前記被案内部材は、前記濾布に設けられた横長の鳩目であり、前記案内部材の下端には、該鳩目に係合する係合部が設けられている、請求項7に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記鳩目に対して係合可能なリングである、請求項8に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記鳩目に対してフック可能な断面コの字状のフックである、請求項8に記載の吸引式濾過濃縮装置。
- さらに、前記濾過枠の下辺と前記濾過板の下辺との間に、前記濾過板を横方向へ可動とするスライド機構が設けられ、
該スライド機構は、前記濾過枠の下辺に設けられ、前記濾過枠の横方向に延びる案内部材と、前記濾過板の下辺に設けられ、該案内部材に対して横方向に摺動自在に係合する被案内部材とを有し、
該被案内部材が、前記弾性部材を構成する、請求項1に記載の吸引式濾過濃縮装置。 - 前記案内部材は、レールであり、前記被案内部材は、上下方向に延び、上端が前記濾過板に固定され、下端に該レールに係合する係合部を有する、請求項11に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記レールが挿通可能なリングである、請求項12に記載の吸引式濾過濃縮装置。
- 前記係合部は、前記レールに対してフック可能な断面コの字状のフックである、請求項12に記載の吸引式濾過濃縮装置。
- 前記弾性部材は、SUS製コイルスプリングである、請求項1に記載の吸引式濾過濃縮装置。
- 前記濾布の下部には、おもり部材がさらに取り付けられ、その重さにより前記濾布に対して下方に張力が加えられる、請求項1に記載の吸引式濾過濃縮装置。
- 濾過濃縮対象物を含有する処理液を収容する濾過濃縮槽と、それぞれ平面部が上下方向に延び、該濾過濃縮槽内で互いに隣接して整列する複数の濾過板とを有し、各濾過板は、網目状の支持板と、支持板に対して一体的に縫合され、該支持板を収容する袋状の濾布とを有し、それにより濾布の内部には濾過室が形成され、さらに、該濾過室を通じて前記濾布を吸引する吸引手段と、該濾過室を通じて前記濾布を膨出させる膨出手段と、複数の濾過板のそれぞれの周囲に亘って配置され、各濾過板に対して常時張力を付加する張力付加手段とを有する、吸引式濾過濃縮装置において、
前記濾過板の外周には、前記濾過板を囲む濾過枠が設けられ、
前記濾過枠の下辺と前記濾過板の下辺との間に設けられる前記張力付加手段は、上下方向に延びる弾性部材であり、
前記濾過枠の上辺と前記濾過板の上辺との間に、前記濾過板を横方向へ可動とするスライド機構が設けられ、
該スライド機構は、前記濾過板の上下方向への移動を制限する上下移動制限手段を有する、
ことを特徴とする吸引式濾過濃縮装置。
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020097005264D KR20090057252A (ko) | 2008-09-25 | 2009-02-19 | 흡인식 여과농축장치 |
CN2009800000085A CN101790498B (zh) | 2008-09-25 | 2009-02-19 | 抽吸式过滤浓缩装置 |
US12/442,394 US20110233131A1 (en) | 2008-09-25 | 2009-02-19 | Filtering and condensing apparatus of suction type |
CA2662159A CA2662159C (en) | 2008-09-25 | 2009-02-19 | Filtering and condensing apparatus of suction type |
JP2009513142A JP4401435B1 (ja) | 2008-09-25 | 2009-02-19 | 吸引式濾過濃縮装置 |
KR1020097005264A KR100954099B1 (ko) | 2008-09-25 | 2009-02-19 | 흡인식 여과농축장치 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2008246165 | 2008-09-25 | ||
JP2008-246165 | 2008-09-25 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2010035363A1 true WO2010035363A1 (ja) | 2010-04-01 |
Family
ID=42059380
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2009/000701 WO2010035363A1 (ja) | 2008-09-25 | 2009-02-19 | 吸引式濾過濃縮装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20110233131A1 (ja) |
JP (1) | JP4401435B1 (ja) |
KR (2) | KR100954099B1 (ja) |
CN (1) | CN101790498B (ja) |
CA (1) | CA2662159C (ja) |
WO (1) | WO2010035363A1 (ja) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112221218B (zh) * | 2020-10-12 | 2022-01-18 | 黎明职业大学 | 一种改进压滤机 |
CN112221219B (zh) * | 2020-10-12 | 2022-01-18 | 黎明职业大学 | 一种压滤机动态加压压滤板 |
CN112843810A (zh) * | 2021-01-09 | 2021-05-28 | 南京研塑环保科技有限公司 | 一种废机油回收处理工艺 |
CN113003779A (zh) * | 2021-03-11 | 2021-06-22 | 鹤壁市质量技术监督检验测试中心 | 一种含重金属废液过滤装置 |
CN114349301B (zh) * | 2021-12-16 | 2023-10-31 | 天津颐和中威精密机器有限公司 | 一种降低污泥含水率的压滤机 |
CN114618227A (zh) * | 2022-03-24 | 2022-06-14 | 张安辉 | 一种用于硅溶胶改性建筑外墙涂料加工的快拆式浓缩设备 |
CN116692782B (zh) * | 2023-07-20 | 2024-03-15 | 临海市星河环境科技有限公司 | 一种废硫酸提纯冷凝机 |
CN116920508B (zh) * | 2023-09-14 | 2023-11-28 | 山东科源化工有限公司 | 氯代苯酚溶液制备用废料回收装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153110A (ja) * | 1984-12-27 | 1986-07-11 | Fuji Electric Co Ltd | 瀘過濃縮装置の瀘過板の固定方法 |
JP2006218455A (ja) * | 2005-02-14 | 2006-08-24 | Amadok Kk | サイフォン式濾過濃縮装置の濾過体及び該濾過体の製造方法,並びにサイフォン式濾過濃縮装置の濾過板及び該濾過板における濾過体の支持枠への固定方法 |
JP2006289241A (ja) * | 2005-04-08 | 2006-10-26 | Shinshu Univ | 汚水汚泥の脱水方法およびその装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153120A (ja) | 1984-12-27 | 1986-07-11 | Fuji Electric Co Ltd | 瀘過濃縮装置の瀘過板の瀘布固定方法 |
JPH09136020A (ja) * | 1995-09-12 | 1997-05-27 | Kajima Corp | 排水処理におけるクロスフロー膜濾過方式 |
JPH11534A (ja) | 1997-06-12 | 1999-01-06 | Kurita Water Ind Ltd | 中空糸膜による浸漬型膜分離装置 |
JP2002011491A (ja) | 2000-06-30 | 2002-01-15 | Sanyo Electric Co Ltd | 排水処理装置 |
-
2009
- 2009-02-19 US US12/442,394 patent/US20110233131A1/en not_active Abandoned
- 2009-02-19 KR KR1020097005264A patent/KR100954099B1/ko active IP Right Grant
- 2009-02-19 CA CA2662159A patent/CA2662159C/en active Active
- 2009-02-19 CN CN2009800000085A patent/CN101790498B/zh active Active
- 2009-02-19 JP JP2009513142A patent/JP4401435B1/ja active Active
- 2009-02-19 KR KR1020097005264D patent/KR20090057252A/ko unknown
- 2009-02-19 WO PCT/JP2009/000701 patent/WO2010035363A1/ja active Application Filing
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61153110A (ja) * | 1984-12-27 | 1986-07-11 | Fuji Electric Co Ltd | 瀘過濃縮装置の瀘過板の固定方法 |
JP2006218455A (ja) * | 2005-02-14 | 2006-08-24 | Amadok Kk | サイフォン式濾過濃縮装置の濾過体及び該濾過体の製造方法,並びにサイフォン式濾過濃縮装置の濾過板及び該濾過板における濾過体の支持枠への固定方法 |
JP2006289241A (ja) * | 2005-04-08 | 2006-10-26 | Shinshu Univ | 汚水汚泥の脱水方法およびその装置 |
Also Published As
Publication number | Publication date |
---|---|
JPWO2010035363A1 (ja) | 2012-02-16 |
CN101790498B (zh) | 2012-10-03 |
US20110233131A1 (en) | 2011-09-29 |
KR20100039820A (ko) | 2010-04-16 |
KR20090057252A (ko) | 2009-06-04 |
CA2662159A1 (en) | 2010-03-25 |
KR100954099B1 (ko) | 2010-04-23 |
CN101790498A (zh) | 2010-07-28 |
CA2662159C (en) | 2017-01-10 |
JP4401435B1 (ja) | 2010-01-20 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP4994444B2 (ja) | 吸引式濾過濃縮装置 | |
JP4401435B1 (ja) | 吸引式濾過濃縮装置 | |
JP4445035B1 (ja) | 吸引式濾過濃縮装置 | |
JP2000189958A (ja) | 浸漬型膜ろ過装置 | |
JP4164498B2 (ja) | サイフォン式濾過濃縮装置の濾過体及び該濾過体の製造方法,並びにサイフォン式濾過濃縮装置の濾過板及び該濾過板における濾過体の支持枠への固定方法 | |
US10260997B2 (en) | Microorganism concentrator | |
JP2007319807A (ja) | 流動担体生物処理槽 | |
JP5427453B2 (ja) | 吸引式濾過濃縮装置 | |
JP4964811B2 (ja) | 濾過板の支持構造 | |
KR20120002518A (ko) | 흡인 여과 농축 방법 및 흡인 여과 농축 장치 | |
JP4964804B2 (ja) | 濾過板の支持構造 | |
JP6892049B2 (ja) | ろ過装置及び、ろ過装置のための枠体 | |
JP2002012302A (ja) | 水切りを備えたゴミ容器 | |
JP2013184092A (ja) | ろ過装置 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 200980000008.5 Country of ref document: CN |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2662159 Country of ref document: CA |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020097005264 Country of ref document: KR |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2009513142 Country of ref document: JP |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 09815785 Country of ref document: EP Kind code of ref document: A1 |
|
NENP | Non-entry into the national phase |
Ref country code: DE |
|
WWE | Wipo information: entry into national phase |
Ref document number: 12442394 Country of ref document: US |
|
122 | Ep: pct application non-entry in european phase |
Ref document number: 09815785 Country of ref document: EP Kind code of ref document: A1 |