JP2020062601A - Wastewater treatment apparatus - Google Patents

Abstract

To provide a wastewater treatment apparatus capable of preventing a filter from clogging.SOLUTION: A final tank 3f of the wastewater treatment apparatus is assembled with wastewater storage chambers 6 adjacent to each other and a partition body 7 positioned between both of the wastewater storage chambers 6. The final tank 3f is assembled with a filter 9 covering a wastewater pass-through hole part of the partition body 7 and oscillation means 10 for oscillating the filter 9. The oscillation means 10 is attached to a filter part 22 of the filter 9.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a wastewater treatment device that purifies wastewater.

  Conventionally, for example, a wastewater treatment device described in Patent Document 1 below is known. This conventional wastewater treatment device has a tank body in which wastewater is stored, a partition body arranged in the tank body, a drainage through hole formed in the partition body, and a drainage through hole portion. It has a filter to cover it.

JP, 2010-110726, A

  However, in the above-mentioned conventional wastewater treatment device, the filter may be clogged due to long-term use, and in this case, it is necessary to wash or replace the filter.

  The present invention has been made in view of the above circumstances, and an object thereof is to provide a wastewater treatment device capable of preventing clogging of a filter.

  The drainage treatment apparatus according to claim 1, wherein the drainage storage chambers adjacent to each other, a partition body located between the drainage storage chambers, a drainage passage hole formed in the partition body, and the partition body. A filter that is provided and covers the hole for drainage passage and a vibrating unit that is attached to the filter and vibrates the filter are provided.

  The wastewater treatment device according to claim 2 is the wastewater treatment device according to claim 1, wherein the filter has a frame portion and a filter portion supported by the frame portion, and the vibrating means is attached to the filter portion. It is composed of multiple vibrators.

  A wastewater treatment device according to a third aspect is the wastewater treatment device according to the first or second aspect, in which the drainage through hole is formed at an intermediate portion in the vertical direction of the partition body.

  The wastewater treatment equipment according to claim 4 is the wastewater treatment equipment according to any one of claims 1 to 3, further comprising: an opening / closing body that opens and closes the drainage passage hole portion; and an aeration means that performs aeration. When the hole for drainage is closed by the opening / closing body and the aeration means is performing aeration, the vibrating means vibrates.

  A wastewater treatment apparatus according to a fifth aspect is the wastewater treatment apparatus according to the fourth aspect, further comprising an opening / closing body drive means for moving the opening / closing body to an open position and a closed position.

  According to the present invention, it is possible to prevent clogging of the filter.

It is a perspective view showing the final tank (precipitation tank) of the wastewater treatment equipment concerning a 1st embodiment of the present invention. It is a perspective view which shows the partition body etc. of a final tank same as the above. It is a schematic sectional drawing of a final tank same as the above. It is a schematic plan view of the whole waste water treatment equipment. It is a schematic perspective view of the whole wastewater treatment equipment which concerns on the 2nd Embodiment of this invention. It is a perspective view which shows the partition body etc. of a wastewater treatment equipment same as the above. FIG. 7A is a diagram showing a state where the opening / closing body is located at a closed position, and FIG. 7B is a diagram showing a state where the opening / closing body is located at an open position.

  A first embodiment of the present invention will be described with reference to FIGS.

  In FIG. 4, reference numeral 1 denotes a wastewater treatment device. The wastewater treatment device 1 purifies dirty wastewater discharged from facilities such as a milking treatment facility (sewage that is the wastewater to be treated), and after this purification treatment, The effluent is discharged to the outside (discharged) as treated water.

  The wastewater treatment device 1 includes, for example, a raw water tank 2 and a plurality of, for example, six treatment tanks 1 to 6 that are first to sixth tanks 3a, 3b, 3c, 3d, 3e, 3f, and flow into the raw water tank 2. The waste water is purified through the first to sixth tanks 3a, 3b, 3c, 3d, 3e, 3f. The sixth tank 3f is the final tank (precipitation tank), and the precipitation treatment is performed here (hereinafter referred to as "final tank 3f").

  As shown in FIGS. 1 to 3, the final tank 3f includes two drainage storage chambers 6 adjacent to each other and a vertically elongated plate-shaped partitioning body 7 located between the two drainage storage chambers 6. ing. That is, the partition body 7 is arranged in the tank body 5 of the final tank 3f, and the partition body 7 forms two drainage storage chambers (space portions) 6 adjacent to each other. Then, drainage is temporarily stored in both drainage storage chambers 6 (6a, 6b) adjacent to each other via the partition body 7.

  The final tank 3f is formed with an opening at an intermediate portion in the vertical direction of the partition body 7 (for example, in the vicinity of the central portion in the vertical direction), and is used for drainage passage for passing drainage from one drainage storage chamber 6a to another drainage storage chamber 6b. A rectangular plate-shaped filter 9 that is detachably provided in the hole 8 and an intermediate portion in the vertical direction of the partition 7 (for example, in the vicinity of the central portion in the vertical direction) and covers the hole 8 for drainage passage, and is directly attached to the filter 9. And a vibrating means 10 for preventing clogging that vibrates the filter 9.

  A center well 4, which is a long and thin cylindrical body having open upper and lower surfaces, is arranged in one drainage storage chamber 6a on the upstream side (upstream storage chamber). The lower end of the center well 4 is located at the same height (including substantially the same) as the lower end of the drainage hole 8.

  The partition 7 has a vertically elongated partition plate portion 11 made of metal such as iron, and a rectangular drainage hole is provided at an intermediate portion in the vertical direction of the partition plate portion 11 (for example, near the central portion in the vertical direction). The portion 8 is formed with an opening.

  The partition plate portion 11 has an upper side plate portion 7a located above the drainage passage hole portion 8 and a lower side plate portion 7b located below the drainage passage hole portion 8. 7b is provided with a plurality of parallel reinforcing ribs 12 (for example, four) extending in the vertical direction.

  Further, the partition plate portion 11 has a rectangular annular intermediate portion 7c in which the drainage passage hole portion 8 is formed, and the holder portion 13 for detachably holding the filter 9 is provided in the intermediate portion 7c. . The holder portion 13 is a side frame 14 having an L-shaped cross section, which is separated and opposed to each other at a predetermined distance corresponding to the width dimension of the filter 9, and a lower frame having an L-shaped cross section that connects the lower end portions of the both side frames 14 to each other. Have 15 and.

  The partition body 7 shown in FIG. 2 has a reinforcing rib portion 12 which is a reinforcing portion, but the reinforcing rib portion 12 is not always necessary and is reinforced like the partition body 7 of FIG. 6 described later. A configuration without the rib portion 12 may be used.

  The filter 9 is a rectangular annular frame portion (frame portion) 21 made of metal such as iron, and a rectangular film-shaped filter portion (membrane portion) fixed to the inside of the frame portion 21 and supported by the frame portion 21. Have 22 and.

  It is also possible to prepare in advance a plurality of types of filters 9 having different coarsenesses of the filter section 22 and use one filter 9 selected from them according to the wastewater to be treated.

  The vibrating means 10 is composed of a plurality of (for example, three) disk-shaped vibrators 25 that are detachably attached directly to the upper side of the filter portion 22 of the filter 9. That is, in the filter portion 22 of the filter 9, the vibrators 25, which are a plurality of small vibrating portions, are horizontally equal to each other on the upper side of the surface facing the other downstream drainage storage chamber (downstream storage chamber) 6b. They are arranged side by side at intervals.

  Specifically, the vibrators 25 are directly attached to the upper side of the filter portion 22 at three positions in the width direction one end side, the width direction center side, and the width direction other end side. Therefore, the operation of these three vibrators 25 causes the entire filter section 22 to vibrate.

  The vibrator 25 is electrically connected to control means (not shown) and is controlled by the control means. For example, the vibrator 25 is activated for a set time each time a certain period of time elapses (for example, only 5 minutes every three hours elapse) to vibrate the entire filter unit 22. That is, the periodic operation of the plurality of vibrators 25 causes the entire filter unit 22 to vibrate finely.

  The set time of the vibrator 25 is set in advance, but the set time can be changed by operating an operation unit (not shown). Further, it is not limited to the regular operation, and the vibrator 25 may be set to always operate.

  Further, a discharge port 27 is formed in the upper side surface of the tank body 5 of the final tank 3f, and a discharge pipe 28 is connected to the discharge port 27. Then, the waste water after the purification treatment (treated water) is discharged to the outside through the discharge pipe 28.

  Next, the operation and the like of the wastewater treatment device 1 will be described.

  The wastewater purified in the first to fifth tanks 3a, 3b, 3c, 3d, 3e passes through the center well 4 and flows into the drainage storage chamber 6a of the final tank 3f.

  In this one drainage storage chamber 6a, as shown in FIG. 3, activated sludge or the like having a larger specific gravity than the drainage is deposited on the bottom surface as a precipitate. In addition, activated sludge and the like, which has a smaller specific gravity than drainage, floats on the water surface as suspended matter. The precipitate is returned to the upstream tank if necessary.

  Of the wastewater stored in this one wastewater storage chamber 6a, the wastewater of the intermediate layer which does not contain suspended matters and precipitates passes through the drainage hole 8 of the partition 7 and the filter portion 22 of the filter 9. And flows into another adjacent drainage storage chamber 6b. At this time, particles to be removed (fine substances) in the drainage of the intermediate layer are collected and removed by the filter unit 22.

  Here, the filter part 22 of the filter 9 vibrates by the plurality of vibrators 25 for a set time each time a fixed time elapses.

  Therefore, the particles to be removed attached to the filter unit 22 are shaken off by the vibration of the filter unit 22 based on the operation of each vibrator 25 of the vibrating unit 10, and as a result, the clogging of the filter unit 22 of the filter 9 occurs. To be prevented.

  Further, according to the wastewater treatment device 1, since the vibrating means 10 for vibrating the filter 9 is provided, it is possible to prevent the filter 9 from being clogged, so that the wastewater can be appropriately purified and the burden on the operator is reduced. be able to.

  Further, since the vibrating means 10 is composed of the plurality of vibrators 25 directly attached to the filter portion 22 of the filter 9, clogging of the filter 9 can be effectively prevented.

  Further, the drainage hole 8 is provided with a partition body so that the drainage of the intermediate layer, which does not contain suspended matters and sediments, of the drainage stored in one drainage storage chamber 6a flows into the other drainage storage chamber 6b. An intermediate portion in the vertical direction of the (partition plate) 7, that is, a portion slightly above the central portion in the vertical direction (a portion where the lower end portion of the drainage passage hole 8 and the lower end portion of the center well 4 are located at the same height) Since the openings are formed in the filter, clogging of the filter 9 can be prevented more effectively.

  Next, a second embodiment of the present invention will be described with reference to FIGS. The same components as those in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted as appropriate.

  As shown in FIG. 5, the wastewater treatment equipment 1 according to the second embodiment differs from the wastewater treatment equipment according to the first embodiment in that the first to eighth tanks 3a, 3b, 3c, which are eight treatment tanks, It is equipped with 3d, 3e, 3f, 3g and 3h.

  Then, for example, wastewater (sewage) to be treated flowing from a facility such as a milking treatment facility flows into the first tank 3a through a screen (not shown), and then the second to eighth tanks 3b and 3c. , 3d, 3e, 3f, 3g, 3h are purified.

  The first tank 3a is an electrolysis tank and is provided with a screen (not shown). The second tank 3b is a ceramic contact circulation tank equipped with the submersible pump means described in the patent publication of Japanese Patent No. 4611963. The submersible pump means is a means for sucking the floating milk fat content together with drainage from the suction port by the operation of the submersible pump and bringing it into contact with a ceramic having a surface-active function to form an emulsified aqueous solution, which is discharged from the discharge port. .

  The third tank 3c is a first catalytic oxidation tank equipped with activated coal. The fourth tank 3d is the first aeration tank. The fifth tank 3e is a second catalytic oxidation tank equipped with activated coal. The sixth tank 3f is the second aeration tank.

  The seventh tank 3g is a sedimentation tank, in which the sedimentation treatment is performed, and the supernatant liquid is discharged as treated water to the outside. The activated sludge that has settled to the bottom is returned to the first tank 3a through the screen.

  Eighth tank 3h is a flat membrane tank, and when reusable treated water (for example, water that cattle or humans can drink) is needed, drainage water from the seventh tank (settling tank) 3g is, for example, a reverse osmosis membrane. (RO membrane) is used for filtration and purification treatment.

  Each of the eight tanks has a drainage storage chamber 6 (6a to 6h) in which drainage is temporarily stored. Of these eight tanks, the four third tanks 3c, the fourth tank 3d, the fifth tank 3e, and the sixth tank 3f are aeration means 31 for aerating the wastewater stored in the wastewater storage chamber 6. Is equipped with.

  Each aeration means 31 has, for example, an air diffuser 32 such as an air diffuser or an air diffuser arranged in the drainage storage chamber 6, and a blower 33 which is an air supplier for supplying air to the air diffuser 32. (See Figure 7).

  Further, as shown in FIG. 5, the wastewater treatment device 1 includes plate-shaped partition bodies 7 (7a to 7g) located between the two wastewater storage chambers (space portions) 6 adjacent to each other. Specifically, the partition plate 7 (7a) is located between the drainage storage chambers 6a of the first tank 3a and the drainage storage chambers 6b of the second tank 3b that are adjacent to each other, and the drainage storage of the second tanks 3b that are adjacent to each other is performed. The partition 7 (7b) is located between the chamber 6b and the drainage storage chamber 6c of the third tank 3c, and between the drainage storage chamber 6c of the third tank 3c and the drainage storage chamber 6d of the fourth tank 3d that are adjacent to each other. The partition 7 (7c) is located, and the partition 7 (7d) is located between the drainage storage chamber 6d of the fourth tank 3d and the drainage storage chamber 6e of the fifth tank 3e that are adjacent to each other, and the partition 5 (7d) is adjacent to each other. The partition 7 (7e) is located between the drainage storage chamber 6e of the tank 3e and the drainage storage chamber 6f of the sixth tank 3f, and the drainage storage chamber 6f of the sixth tank 3f and the drainage storage of the seventh tank 3g are adjacent to each other. The partition 7 (7f) is located between the chambers 6g, and the partition 7 (7g) is located between the drainage storage chamber 6g of the seventh tank 3g and the drainage storage chamber 6h of the eighth tank 3h which are adjacent to each other. There is.

  Of these partition bodies 7 (7a to 7g), the three partition bodies 7 (7c, 7d, 7e) facing the aeration means 31 are provided with filters 9 for covering the drainage passage holes 8. . It should be noted that the remaining four partition bodies 7 (7a, 7b, 7f, 7g) are not provided with drainage holes 8 and are not provided with filters 9 that cover them. Therefore, the drainage is supplied into the downstream tank not through the drainage through hole 8 but through a pipe, a communication hole or the like (not shown).

  Here, as shown in FIGS. 6 and 7, the holder 13 of the partition 7 (7c, 7d, 7e) has a movable rectangular plate shape that opens and closes the drain passage hole 8 in addition to the filter 9. The opening / closing body 36, which is a flat plate, is held.

  The opening / closing body 36 is located at the open position to open the drainage passage hole 8 and is located at the closed position to close the drainage passage hole 8. That is, the opening / closing body 36 can be moved in the vertical direction between the open position and the closed position by the opening / closing body driving means 37. In other words, the opening / closing body 36 can be inserted / extracted between the intermediate portion 7c of the partition 7 and the filter 9 based on the operation of the opening / closing body driving means 37.

  The opening / closing body driving means 37 rotates, for example, a wire 41 having a lower end attached to the opening / closing body 36, a rotatable winding body 42 that winds and unwinds the wire 41, and the winding body 42. And a motor (not shown) that is a driving body.

  A motor for the opening / closing body driving means 37 and a blower 33 for the aeration means 31 are electrically connected to a control means (not shown) for controlling the vibrator 25, and controlled by the control means.

  Then, as shown in FIG. 7A, the filter portion 22 of the filter 9 is in a state where the drainage passage hole portion 8 is closed by the opening / closing body 36 and when the aeration means 31 performs aeration. The vibrator 25 of the vibrating means 10 vibrates.

  Therefore, the filter portion 22 of the filter 9 is efficiently washed by the vibration of the vibrating means 10 and the aeration of the aeration means 31, and the clogging of the filter portion 22 is prevented.

  Note that each vibrator 25 of the vibrating means 10 operates for a set time, for example, every time a certain time elapses during aeration by the aeration means 31, and vibrates the entire filter section 22. Further, for example, the vibrator 25 may be set to always operate during aeration.

  Further, the aeration unit 31 temporarily stops the aeration when the aeration is performed for a predetermined time set in advance, and after a predetermined time (for example, 10 minutes to 30 minutes) elapses after the stop, as shown in FIG. 7B. Then, the opening / closing body 36 is pulled up by the wire 41, and the drainage hole 8 is opened.

  Then, the drainage passes through the drainage hole 8 and the filter portion 22 of the filter 9 and flows into the adjacent drainage storage chamber 6 on the downstream side. At this time, the filter unit 22 collects and removes the particles to be removed from the wastewater.

  The wastewater treatment device 1 according to the second embodiment also includes the vibrating means 10 for vibrating the filter 9 as in the first embodiment, so that clogging of the filter 9 is effectively prevented. be able to.

  Further, since the filter 9 vibrates by the vibrating means 10 when the drainage passage hole 8 is closed by the opening / closing body 36 and the aeration means 31 is performing aeration, the clogging of the filter 9 is more effective. Can be prevented.

  In addition, in the said 1st Embodiment, you may arrange | position the partition means described in the patent publication of the patent 4979673, for example in the drainage storage chamber 6b of the downstream.

  Further, in the above-described first embodiment, the configuration in which the filter 9 is provided in the partition body 7 so as to be located in the drainage storage chamber 6b on the downstream side has been described. The partition 7 may be provided so as to be located in the chamber 6a. In any of the first and second embodiments, the filters 9 may be provided not only on one side of the partition 7 but on both sides.

  Further, in the second embodiment, the filter 9 and the opening / closing body 36 are provided on the same side with respect to the partition body 7. However, for example, one of the filter and the opening / closing body is on one side of the partition body. And the other one may be provided on the other side of the partition body.

  Although some embodiments of the present invention and modifications thereof have been described, the respective embodiments and modifications may be appropriately combined without departing from the gist of the present invention.

1 Wastewater treatment device 6 Drainage storage chamber 7 Partition 8 Drainage hole 9 Filter
10 Vibration means
21 Frame part
22 Filter section
25 vibrator
31 Aeration means
36 openable body
37 Opening / closing body drive means

Claims (5)

Drainage storage chambers adjacent to each other,
A partition located between these drainage storage chambers,
A drainage hole formed in the partition body,
A filter provided on the partition body and covering the drainage hole,
A wastewater treatment device, comprising: a vibrating unit attached to the filter to vibrate the filter. The filter is
Frame part,
Having a filter portion supported by this frame portion,
The wastewater treatment device according to claim 1, wherein the vibrating means is constituted by a plurality of vibrators attached to the filter portion. The drainage treatment hole according to claim 1 or 2, wherein the drainage passage hole is formed at an intermediate portion in the vertical direction of the partition body. An opening and closing body that opens and closes the drainage hole,
Equipped with aeration means for performing aeration,
4. The filter vibrates by the vibrating means when the drainage passage hole is closed by the opening / closing body and the aeration means is performing aeration. Wastewater treatment equipment described. The wastewater treatment equipment according to claim 4, further comprising an opening / closing member driving means for moving the opening / closing member to an open position and a closed position.

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