JP6542440B1 - Fine solid separation device - Google Patents

Abstract

An object of the present invention is to provide a fine solid separation device capable of discharging treated water having a high purification level while having a simple structure.
SOLUTION: A dirty water introduction pipe 3 for introducing dirty water W into the treatment tank 2 from the outside, a dirty water guide pipe 5 of upper and lower openings communicated with the dirty water introduction pipe 3 in the treatment tank 2, and above the dirty water guide pipe 5. A straightening unit 8 disposed at a predetermined gap and straightening the dirty water W flowing out from the upper opening of the dirty water guide pipe 5 and a fine solid of the dirty water disposed at the predetermined gap above the straightening unit 8 The sludge wiper 13, a sludge shooter 23 for containing fine solid matter collected by the sludge wiper 13 and discharging it out of the processing tank 2, a discharge pipe 32 for discharging the liquid S purified from the inside of the processing tank 2, dirty water W , And an air pump 49 connected to the dirty water introduction pipe 3 in order to mix air bubbles into the air pump.
[Selected figure] Figure 1

Description

  The present invention relates to a fine solids separation device comprising a treatment tank for separating waste water into solids and liquid.

  Conventionally, manure and urine excreted by livestock such as piggery are separated into solid and liquid by a simple gravity settling tank using chemicals, and then the organic matter in sewage is decomposed and disinfected by microorganisms by an aeration tank. After being discharged into rivers etc. or separated into solid and liquid in separate sedimentation tank and disinfected again, the supernatant liquid is discharged into rivers etc. Solids are dewatered as complete solid industrial waste Depending on the level of contamination, it is used as fertilizer.

  However, even if a large amount of chemical is used, the purified liquid contains many fine solid substances that do not react to the chemical, or the chemical remains, resulting in discharge to rivers and the like, and fertilizer Had problems with the composition of the solid as.

  In addition, in the conventional method, it is necessary to use a plurality of gravity sedimentation tanks and maintain aerobic conditions for the growth of microorganisms by the aeration tank, and it is necessary to use a large land or equipment for installing the equipment. There was a problem in terms of expenses and operating expenses.

  In such a situation, for example, in the feces and urine purification apparatus according to Patent Document 1, after separating a large solid substance in sewage in a storage tank, the separated liquid substance is separated by precipitation and generated by an ozone supply means Solid matter is attached to bubbles of ozone and floated and separated, solid matter is adhered to the surface of ion exchange filter and separated, and solid matter is filtered and separated by prefilter and reverse osmosis filtration means. It is disclosed as what can be processed water with a high purification level by a manure purification apparatus.

JP 2000-343099 A

  However, although the feces and urine purification apparatus according to Patent Document 1 is excellent in that treated water having a high purification level can be discharged by one manure and urine purification apparatus, consumables such as ozone supply means, ion exchange filters, prefilters, etc. In addition, the number of auxiliary materials is large, the size is large, and the apparatus is complicated. As a result, the apparatus becomes an expensive apparatus, and there is a limit to keep the operation cost inexpensive.

  The inventor of the present application has noted that there are many fine solid substances which do not react with chemicals in the sewage, and the fine solid substances to which bubbles are attached as well as precipitation and separation float to the water surface without being separated from the bubbles. It has been found that treated water having a high purification level can be discharged with a simple device without using chemicals by letting it be collected.

  The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a fine solid separation device capable of discharging treated water having a high purification level while having a simple structure.

  In order to achieve the above objects, the present invention provides the following.

In the invention according to claim 1, the purification device comprises a treatment tank for separating the sewage into solid and liquid, and the sewage introduction pipe for introducing the sewage into the treatment tank from the outside, the sewage introduction pipe, and the treatment Upper and lower sewage guide pipes communicating within the tank, a straightening unit disposed at a predetermined gap above the dirty water guide pipe and straightening the dirty water flowing out from the upper opening of the dirty water guide pipe, and the straightening unit A sludge wiper which is disposed above the surface of the waste water so as to scrape the fine solid matter of the dirty water which is floated above the predetermined gap, and a sludge shooter which contains the fine solid matter scraped by the sludge wiper and discharges it out of the treatment tank; contamination and discharge pipe, and the water level adjusting container having a level adjusting unit for finely adjusting the height of the liquid surface of the treatment tank communicating with said discharge pipe, a bubble in the sewerage for discharging clarified liquid from the processing tank A microbubble generating apparatus and continuously to the wastewater feed pipe in the treatment tank outside in order, in constructed, the wastewater inlet tube, in the interior of the sewerage guide tube through the inside of the sewerage guide tube Curved and bent right up so that the open end is vertically upward, the dirty water guide pipe forms a weir that spreads upward at the upper end, and the sludge wiper starts from the vertical central axis of the processing tank While rotating in the horizontal direction, the flow straightening unit is coaxially connected below the sludge wiper, and the flow straightening unit is formed into a sharpened lower end pointed by a conical flow straight lower surface and a cylindrical flow straight side. The water level adjusting portion is formed such that the upper end portion of the discharge pipe protrudes from the bottom portion of the water level adjusting container, and the peripheral side surface of the protruding portion is screwed to form a cylindrical male screw pipe. Cylindrical female thread screwed on the side Providing cents to fine solids separation device, characterized in that to constitute a tube to be screwed.

In the invention according to claim 2, the bottom of the processing tank is provided with a sediment discharge pipe for discharging the deposited sludge to the outside of the processing tank, and the sediment discharge pipe is in the horizontal direction from near the bottom of the processing tank An apparatus for separating fine solids according to claim 1, wherein an air introduction pipe for feeding air to a middle portion of the sediment discharge pipe which is extended upward and set up upward is connected in communication .

In the invention according to claim 3 , the fine solid separated matter according to claim 2, characterized in that the straightening unit forms an annular bubble breaking portion surrounding the straight side surface at a middle portion of the straight side surface. We will provide equipment.

According to the invention of claim 1, the sewage introduction pipe for introducing the sewage into the treatment tank from the outside, the sewage guide pipe of the upper and lower opening communicating with the sewage introduction pipe and the treatment tank, and the predetermined position above the sewage guide pipe A straightening unit disposed in the gap between the upper and the lower openings of the dirty water guide pipe, a sludge wiper disposed in a predetermined gap above the straightening unit, and collecting fine solids of the raised sewage; A sludge shooter that contains fine solids collected by the wiper and discharges it out of the treatment tank, a discharge pipe that discharges the purified liquid from the inside of the treatment tank, and the height of the liquid surface of the treatment tank in communication with the discharge pipe. It consists of a water level adjustment container that has a water level adjustment part that fine-tunes, and a micro bubble generator connected to the sewage introduction pipe outside the treatment tank to mix air bubbles into the sewage. Inside Inside the dirty water guide pipe, it bends and bends right up so that the open end is vertically upward inside the dirty water guide pipe, the dirty water guide pipe forms a weir that spreads upward at the upper end, and the sludge wiper While rotating in the horizontal direction starting from the vertical central axis, the straightening unit is coaxially connected below the sludge wiper, and the straightening unit is a sharpened lower end consisting of a conical straightening lower surface and a cylindrical straightening side The water level adjustment part is formed into a mold, the upper end of the discharge pipe is formed to project from the bottom of the water level adjustment container, and the peripheral side surface of the protruding part is screwed to form a cylindrical male screw pipe. Since the cylindrical female screw tube whose side is screwed is configured to be able to be screwed, solid material without buoyancy precipitates from the lower opening of the sewage guiding tube to the lower side of the treatment tank, and the fine particles with bubbles attached Solid matter flows out from the upper opening of the sewage guide tube by buoyancy Since it can be floated on the liquid surface without separating air bubbles from the fine solid by the straightening unit, sludge consisting of fine solid can be efficiently recovered by the sludge wiper, and treated water with high purification level is taken out through the discharge pipe In addition, since the straightening portion is formed in a sharpened lower end having a conical straightening lower surface and a cylindrical straightening side, it is possible to fine the air flowed out from the upper opening of the dirty water guide pipe Since the solid matter can be uniformly and radially rectified to float on the liquid surface, separation of air bubbles from the fine solid matter can be stably prevented. In addition, since the sewage introduction pipe penetrates into the inside of the sewage guide pipe and is bent upward so that the open end is vertically upward inside the sewage guide pipe, solid substances that do not have the buoyancy of the sewage become sewage. It is possible to move downward along the guide tube, and float solid solids and air bubbles attached fine solid matter can rise along the dirty water guide tube, and the dirty water guide tube also spreads the weir spread upward at the upper end. Since the fine solid matter which the bubbles which flowed out from the upper opening of the dirty water guide pipe can be made to flow out uniformly toward the upper straightening part reliably from having formed, separation of the bubble from the fine solid matter is further achieved. It can be prevented stably. Further, the sludge wiper rotates in the horizontal direction starting from the vertical central axis of the processing tank, and the rectifying unit is coaxially provided below the sludge wiper, without disturbing the rotation of the sludge wiper. If the flow straightening unit can be provided above the processing tank and the flow straightening unit has a concentric shape with a vertical central axis in horizontal cross sectional view, even if the flow straightening unit rotates coaxially with the sludge wiper, the flow straightening unit The rectification action can be exhibited without disturbing the waste water of the Furthermore, since the microbubble generating device makes it possible to attach minimal air bubbles to almost all the fine solid substances, it is possible to take out treated water having a very high purification level. Further, the water level in the water level adjusting container, that is, the liquid level height of the processing tank can be easily finely adjusted by moving the position of the female screw pipe relative to the male screw pipe of the water level adjusting portion.

According to the invention of claim 2, the bottom of the processing tank is provided with a sediment discharge pipe for discharging the deposited sludge to the outside of the processing tank, and the sediment discharge pipe extends horizontally from the vicinity of the bottom of the processing tank Since the air introduction pipe for feeding air to the middle part of the sediment discharge pipe erected upward is connected and connected, the sludge filled in the inside of the sediment discharge pipe is moved upward by the buoyancy of the air to the outside Can be discharged into

According to the third aspect of the present invention, since the straightening unit forms an annular bubble breaking portion surrounding the straight side surface at the middle portion of the straight side surface, it can break large bubbles that affect the liquid level. It can be destroyed by colliding with a part .

It is explanatory drawing which arrange | positioned simply each structure of the fine-solids separation apparatus which concerns on this embodiment in the same cross section. It is a top view of the fine-solids separation device concerning this embodiment. (A) is a perspective view for description which shows a sewage guide pipe and a rectification part, (b) is a perspective view for explanation of the rectification part which formed the bubble destruction part in the rectification side. BRIEF DESCRIPTION OF THE DRAWINGS It is a figure which shows the example of whole structure in which the fine-solids separation apparatus which concerns on this embodiment is used. (A) is a simplified perspective view of a sludge shooter, and (b) is a simplified side view thereof. (A) is a front view of the variable plate which comprises a water level adjustment part, (b) is a front view of a reference plate, (c) is a front view which fixed the reference plate to the water level adjustment container by the guide support | pillar. (A) is a diagram in which the variable plate is lowered in the cross-sectional view along the line A-A in FIG. 2, (b) is a diagram in which the variable plate is slightly raised, and (c) is a diagram in which the variable plate is further raised is there. (A) is a perspective view of a male screw pipe and a female screw pipe that constitute another water level adjustment unit, and (b) is a drawing in which the female screw pipe is lowered according to the sectional view taken along line A-A in FIG. (C) is the figure which raised the internal thread pipe.

  The gist of the fine solid matter separation device according to the present invention is a purification device consisting of a treatment tank for separating sewage into solid and liquid, and a sewage introduction pipe for introducing sewage into the treatment tank from the outside, and sewage introduction Pipes and communicating pipes in the treatment tank; a straightening unit disposed at a predetermined gap above the dirty water guide pipes and rectifying the dirty water flowing out from the upper opening of the dirty water guide pipes; A sludge wiper which is disposed at a predetermined gap above and picks up the fine solid matter of surfaced sludge which has floated up, a sludge shooter which contains the fine solid matter scraped by the sludge wiper and discharges it out of the treatment tank, and purification from within the treatment tank It is characterized in that it comprises an exhaust pipe for discharging the liquid and an air pump connected to the sewage introduction pipe in order to mix air bubbles into the sewage. That is, it is an object of the present invention to provide a fine solid separation device capable of discharging treated water having a high purification level while having a simple structure.

  Hereinafter, an embodiment of a fine solid separation device according to the present invention will be described with reference to the drawings. Further, in the present description, the same symbols are attached in principle to the structures or parts which are the same in left and right or in left and right symmetry, and only one of the left and right is explained, and the explanation is omitted suitably for the other.

  The fine solid matter separation device 1 according to the embodiment of the present invention, as shown in FIG. 1, FIG. 2 and FIG. 3 (a), is a sewage introduction pipe 3 for introducing sewage W into the treatment tank 2 from the outside, The dirty water guide pipe 5 of the upper and lower opening which communicates in the introduction pipe 3 and the treatment tank 2 and a predetermined gap above the dirty water guide pipe 5 are used to rectify the dirty water W flowing out from the upper opening of the dirty water guide pipe 5 Rectifying portion 8, sludge wiper 13 disposed at a predetermined gap above the rectifying portion 8 and scraping the fine solid matter of sludge that has floated up, containing the fine solid matter scraped by the sludge wiper 13 outside the treatment tank 2 And a discharge pipe 32 for discharging the liquid (treated water) S purified from the inside of the treatment tank 2, and an air pump 49 connected to the waste water introduction pipe 3 for mixing air bubbles in the waste water W , Consists of.

  Further, the flow straightening unit 8 is formed in a conical shape with a sharp lower end, and the dirty water guide pipe 5 forms a weir 6 expanded upward at the upper end.

  Furthermore, the sludge wiper 13 rotates in the horizontal direction starting from the vertical central axis G of the processing tank 2, and the rectifying unit 8 is coaxially connected below the sludge wiper 13.

  By configuring in this way, solid material without buoyancy precipitates from the lower opening of the sewage guiding tube 5 to the lower part of the treatment tank 2, and fine solid matter with attached air bubbles floats on the upper opening of the sewage guiding tube 5 by buoyancy. The fine solid matter which has flowed out from the part and can adhere to the bubbles can be uniformly rectified radially without separating it from the bubbles and can rise to the liquid level H, and the sludge consisting of the fine solid matter is recovered by the sludge wiper 13 It is possible to take out the treated water S having a high purification level through the discharge pipe 32.

  Such a fine solid separation device 1 is disposed at the latter stage of a simple gravity sedimentation tank that separates manure and the like from a piggery into solid and liquid as shown in FIG. 4, for example, when the sewage level is high. Then, an aeration tank is disposed downstream of the fine solid separation device 1, and a final simple gravity settling tank is disposed downstream of the aeration tank to be discharged to a river or the like.

In addition, the sludge discharged from the simple gravity settling tank, the fine solid separation device 1, the final simple gravity settling tank, etc. is input to the dehydrator and is used as fertilizer in the solid state. Ru.

  In addition, the fine solid matter separation device 1 according to the present embodiment is not limited to the above-described configuration, and may have any configuration depending on the level of the sewage, the external environment, etc. It is possible to change and change

  Further, in the fine solid matter separation device 1 of the present embodiment, about 90% of the fine solid matter can be removed by using a microbubble generation device 49a described later as the air pump 49, and therefore, it is not necessary to use chemicals. The management of the microorganisms in the aeration tank is also facilitated, and further, the time and effort required to render it harmless in the final gravity settling tank can be omitted, so that the cost for consumables and auxiliary materials can be reduced, and the operation cost can be reduced. Is possible.

  In addition, since the collected solid (including fine solid) also contains no medicine, it can be used as a safe fertilizer after it is completely solidified by a dehydrator.

  Next, the configuration of each part of the fine solid matter separation device 1 according to the present embodiment will be specifically described in detail using the drawings.

  First, as shown in FIG. 1, in the processing tank 2 constituting the main body of the fine solid matter separating device 1, the lower half portion is formed in a conical shape at the lower end tip and the upper half portion is formed in a cylindrical shape of the upper opening It is formed as a large container.

  In the middle of the lower half of the treatment tank 2, a sewage introduction pipe 3 is disposed, an air pump 49 is connected to the outside of the treatment tank 2, and clean water J is introduced into the air pump 49 as raw water. Raw water mixed with air bubbles is mixed with the dirty water W, and the purification capacity is improved by introducing clean clean water J instead of circulating water.

  In addition, in this embodiment, although not the circulating water but the clean purified water J is introduced, it is needless to say that the introduction of the circulating water is not excluded.

  Further, in the present embodiment, as the air pump 49, a micro-bubble generating device 49a (manufactured by Nikuni Co., Ltd .: MBG25N15PE-1BH) capable of generating micro bubbles of several μm to about 50 μm is used.

  In addition, the dirty water introduction pipe 3 is drawn horizontally into the inside of the treatment tank 2 and penetrates watertightly in the middle part of the side wall of the dirty water guide pipe 5 having an axial center on the vertical central axis G of the treatment tank 2 Inside the pipe 5, the open end is bent upwards so that the open end is vertically upward, and the solid without buoyancy in the sewage descends along the sewage guide pipe 5, and the solid with solidity and air bubbles adhere The fine solids rise along the sewage guiding tube 5.

  The dirty water guide pipe 5 is formed in the cylindrical shape of the upper and lower opening, and the upper end portion peripheral edge is bent outward and expanded upward as shown in FIG. The falling solids are deposited from the lower opening of the sewage guiding tube 5 to the bottom of the treatment tank 2, and the rising fine solids and the like flow out from the upper opening.

  Further, above the dirty water guide pipe 5, there is disposed a straight section (see FIG. 3 (a)) having a predetermined gap formed in a conical shape at the lower end tip (see FIG. 3 (a)). It has a straight lower surface 9 and a straight cylindrical side surface 10, and is disposed so that the vertical central axis G of the processing tank 2 is the same as the dirty water guide pipe 5, and it will be described later The motor shaft 18 of the motor 17 is connected.

  In addition, in order to stably rectify and float the sewage W flowing out from the upper opening of the sewage guide pipe 5, it is desirable that the outer diameter of the weir 6 be equal to or smaller than the outer diameter of the flow straightening unit 8. .

  Further, the inclination angle of the weir 6 and the inclination angle of the rectifying lower surface 9 are formed identically in the range of approximately 5 ° to approximately 45 °, and in particular, the rectification effect appears notably by setting the inclination angle of 35 ° ± 10 °. The difference between the inclination angle of the weir 6 and the inclination angle of the rectifying lower surface 9 is preferably within ± 3 °.

  In the present embodiment, the gap between the weir 6 and the straight lower surface 9 is approximately 30 mm, but this gap should be appropriately optimized depending on the size of the treatment tank 2, the type of waste water W, the external environment, etc. Can.

  Further, as shown in FIG. 3B, an annular bubble destruction portion 11 surrounding the rectification side surface 10 can be formed in the middle portion of the rectification portion 8, and a large degree that affects the liquid level H can be formed. It plays a role of colliding the air bubble with the air bubble destruction part 11 and destroying it.

  Further, as shown in FIGS. 1 and 2, a horizontally rotating sludge wiper 13 consisting of a stay 14 and a blade 15 is provided in the middle of the motor shaft 18 connected to the upper end face of the flow straightening unit 8. By controlling the motor 17, the sludge wiper 13 can scrape the sludge in the vicinity of the liquid level H with the motor shaft 18, that is, the vertical central axis G as an axis.

  Specifically, the stay 14 has a reverse L-shape in cross-sectional view consisting of a horizontal piece and a vertical piece, and does not come in contact with the inner wall of the cylindrical upper half of the processing tank 2, that is, slightly smaller than the radius of the upper half. The blade 15 is formed of an elastic member, and is formed in a rectangular shape having a width enough to be close to be fitted between the straightening side surface 10 of the straightening unit 8 and the inner wall of the processing tank 2.

  Further, the sludge wiper 13 is configured by locking the upper end edge of the blade 15 with a bolt or the like in the L-shaped vertical piece that constitutes the stay 14, and hanging the blade 15 against the stay 14.

  In the present embodiment, the sludge wiper 13 is formed as an approximate length of the radius of the processing tank 2 like an analog watch, but for example, the vertical central axis G is positioned at the center as an approximate diameter of the processing tank 2 Various modifications and changes are possible within the scope of the subject matter of the present invention, such as forming a vertical center axis G as an axis and forming a cross shape in plan view.

  The motor 17 has a mounting base 21 mounted on a base 20 mounted on the opposing upper end of the processing tank 2 and is fixed to the mounting base 21 so that the motor shaft 18 is vertically downward.

  Specifically, the foundation frame 20 is composed of two square bars having a length about the diameter of the cylindrical upper half of the processing tank 2, and these are disposed in parallel at a predetermined interval to provide The mounting base 21 is constructed at the upper end, and further, the mounting base 21 is formed of two short rectangular bars straddling the base base 20 at right angles, which are arranged in parallel at a predetermined interval to be bridged on the base base 20 Reference numeral 17 is screwed and fixed to the mounting base 21 with a bolt or the like.

  Although omitted in the present embodiment, a reduction gear is actually added to the motor 17 so that it can be controlled to an appropriate rotational speed.

  Further, a sludge shooter 23 is disposed above the upper half of the treatment tank 2, that is, on the side of the straightening side surface 10 of the flow straightening unit 8, and the fine solid collected by the sludge wiper 13 by the sludge shooter 23. To be discharged out of the processing tank 2.

  Specifically, the sludge shooter 23 is composed of a shooter portion 24 and a guide portion 27. As shown in FIGS. 2, 5 (a) and 5 (b), the shooter portion 24 is a substantially reverse rectangular triangle in a side view. It is formed in a box in the form of an upper opening substantially rectangular in plan view, and one side is fixed to the inner wall of the processing tank 2 to form a box including the inner wall of the processing tank 2.

  Further, the tip of the shooter portion 24 located in the vicinity of the straightening side surface 10 of the straightening unit 8 forms a concave shooter curved portion 25 inward according to the outer shape of the straightening side surface 10.

  In the vicinity of the lower end of the processing tank 2 forming one side of the shooter portion 24, a sludge collection pipe 26 communicating with the outside is connected to the outer wall of the processing tank 2 and the collected sludge is discharged to the outside. be able to.

  The guide portion 27 is composed of a main guide portion 28 and a sub guide portion 29. The main guide portion 28 is formed of a triangular flat plate, and one side is formed to have the same length as the open end side of the shooter portion 24. The other side is connected to the inner wall of the processing tank 2 while being connected to one open end of the shooter portion 24 and the whole is inclined downward.

  Further, the sub guide portion 29 is formed of a substantially triangular flat plate, one side of the sub guide portion 29 having the same length is connected to the other side of the main guide portion 28 and the whole is further below the main guide portion 28 It is inclined to.

  Further, the other side of the sub guide portion 29 located in the vicinity of the straightening side surface 10 of the straightening unit 8 forms a concave guide curved portion 30 inward according to the outer shape of the straightening side surface 10.

  The sludge shooter 23 is disposed such that the opening of the shooter portion 24 is exposed slightly above the liquid level H, and the fine solid collected from the sludge wiper 13 rotating around the liquid level is used. When housing the sludge in the shooter portion 24, the rectified liquid level H is not disturbed, and the guide portion 27 plays an important role in storing the sludge efficiently.

  In addition, although the guide part 27 is comprised by the main guide part 28 and the subguide part 29 in this embodiment, you may comprise only the main guide part 28 without forming the subguide part 29. FIG.

  Further, in the present embodiment, the guide portion 27 is formed of a flat plate, but a three-dimensional structure in which the lower side of the guide portion 27 is a sealed space, that is, the lower side of the guide portion 27 is not concaved It can also be formed so as not to stay as fine as possible.

  As described above, the sewage introduced into the sewage guide pipe 5 through the sewage introduction pipe 3 is divided into one falling down and settling in the bottom of the processing tank 2 and one rising up and reaching the liquid level H. The liquid in the vicinity of the central portion of the treatment tank 2 outside the dirty water guide pipe 5 is occupied by the treated water S having a high purification level which hardly contains fine solid matter and the like.

  Such a situation is made possible because the bubbles attached to the fine solid matter are not separated by the action of the flow straightening unit 8, and in particular, the generation of the bubbles becomes remarkable by the microbubble generator 49a, and If the clean water J is always introduced without circulating the clean water J introduced into the treatment tank 2, the treated water S having a high purification level can be further purified.

  Further, as shown in FIG. 1, the treated water S is discharged to the outside of the treatment tank 2 by the discharge pipe 32, but in the present embodiment, the treated water S discharged from the discharge pipe 32 is via the water level adjustment container 34. Emissions from the final emissions transfer 32a.

  Specifically, the discharge pipe 32 is disposed in the vicinity of the dirty water guide pipe 5 at a substantially central portion of the processing tank 2 with the opening vertically downward, and immediately thereafter, toward the wall surface of the upper half of the processing tank 2 It is bent so as to be horizontal and exposed to the outside of the processing tank 2, and further bent vertically upward so as to communicate with the water level adjusting container 34.

  The water level adjustment container 34 has the liquid level of the processing tank 2 by the balance between the water quantity per unit time of the purified water J introduced into the processing tank 2 without circulating as described above and the water quantity of the processing water S discharged. The height H is finely adjusted, and is formed in a substantially rectangular box shape at the upper opening together with the outer wall on the upper side of the processing tank 2, and the water level adjusting portion 35 is disposed inside.

  As shown in FIGS. 6 (a), (b) and (c), the water level adjustment unit 35 is composed of a variable plate 36, a reference plate 38, and two guide columns 40, and the variable plate 36 is a rectangular plate. A horizontally long elliptical adjustment hole 37 is formed at the lower side.

  As shown in FIG. 6 (b), the reference plate 38 is formed in a rectangular plate shape slightly larger than the variable plate 36, and a rectangular reference hole 39 is formed in the center and fixed to the water level adjustment container 34. As shown in FIG. 6C, the guide post 40 sandwiches the variable plate 36 with the reference plate 38 in a watertight manner, and the guide post 40 of the water level adjustment container 34 with a predetermined gap with the reference plate 38. It is formed in a substantially prismatic shape in close contact with the wall surface.

  Accordingly, as shown in FIG. 7 (a), when the variable plate 36 is positioned downward, the adjustment hole 37 communicates with the lower reference hole 39 of the reference plate 38, and FIGS. 7 (b) and 7 (c). The height t (the water level of the water level adjusting container 34) at which the adjustment hole 37 and the reference hole 39 communicate can be varied by raising the variable plate 36 as shown in FIG. The liquid level H height of can be finely adjusted.

  In addition, although the water level adjustment part 35 of this embodiment is comprised as mentioned above, it forms so that the upper end part of the discharge pipe 32 connected with the water level adjustment container 34 may be protruded from the bottom part of the water level adjustment container 34, As shown in FIG. 8 (a), the protruding portion is a cylindrical male screw tube 41 whose peripheral side is screwed, and a cylindrical female screw tube 42 whose internal side is screwed is constituted so as to be screwable. As shown in FIGS. 8 (b) and 8 (c), the water level t in the water level adjustment container 34, that is, the liquid level H of the processing tank 2 is increased by moving the position of the female screw pipe 42 relative to the male screw pipe 41. It may be configured to be able to fine-tune the

  In the present embodiment, the vertical movement of the variable plate 36 and the female screw tube 42 is described as a manual operation, but the method and structure for adjusting the water level is not limited to this embodiment. The amount of water per unit time and the amount of treated water S being discharged are electrically detected, and the height of the liquid surface H of the processing tank 2 is detected by a sensor or the like to automatically control the positions of the variable plate 36 and the female screw tube 42 You can also do things like

  The sludge deposited on the bottom of the processing tank 2 flows out to the precipitate discharge pipe 44 as shown in FIG. 1 and is discharged to an external device such as a dehydrator.

  Specifically, the precipitate discharge pipe 44 extends in the horizontal direction from the vicinity of the bottom of the processing tank 2 and arranges the valve 45 at the end and stands upward just in front of the valve 45, The air introduction pipe 46 is connected in communication.

  The air introduction pipe 46 has a solenoid valve 47 and the like at its end, and air can be fed into the inside of the sediment discharge pipe 44 by manual operation or automatic operation, and the sludge filled in the inside of the sediment discharge pipe 44 is air It is configured to be moved upward by the buoyancy of and discharged to the outside.

  Further, the valve 45 is disposed to remove sludge and the like staying inside the sediment discharge pipe 44, and can be released irregularly to perform the sludge removal operation.

  As described above, the fine solid matter separation device 1 according to this embodiment includes the sewage introduction pipe 3 for introducing sewage into the treatment tank 2 from the outside, and the upper and lower openings communicating with the sewage introduction pipe 3 in the treatment tank 2. And a straightening unit 8 disposed at a predetermined gap above the dirty water guide tube 5 and straightening the dirty water flowing out from the upper opening of the dirty water guide tube 5; and a predetermined gap above the straightening unit 8 Sludge wiper 13 for scraping and collecting fine solid matter of sewage that has been surfaced, sludge shooter 23 for containing fine solid matter scraped by sludge wiper 13 and discharging it out of treatment tank 2, and purification from inside treatment tank 2 The solid material without buoyancy comes from the lower opening of the sewage guiding pipe 5 by comprising the exhaust pipe 32 for discharging the liquid and the air pump 49 connected to the sewage introduction pipe 3 for mixing air bubbles into the sewage. Processing tank 2 from the department The fine solid that has precipitated downward and has bubbles attached flows out from the upper opening of the dirty water guide tube 5 by buoyancy, and floats up on the liquid level H without bubbles being separated from the fine solids by the upper straightening unit 8 Therefore, sludge composed of fine solid matter can be efficiently recovered by the sludge wiper 13, and treated water with a high purification level can be taken out through the discharge pipe 32.

  In addition, since the straightening unit 8 is formed in a conical shape at the lower end point, it is possible to uniformly straighten the fine solid matter to which the air bubbles flowing out from the upper opening of the dirty water guide pipe 5 adhere to rise to the liquid level H. Since it can be done, the separation of air bubbles from the fine solid can be stably prevented.

  Further, since the dirty water guide pipe 5 is formed with the weir 6 expanded upward at the upper end, the fine solid with bubbles attached from the upper opening of the dirty water guide pipe 5 is directed toward the straightening part 8 above. Since the liquid can be surely drained evenly, it is possible to more stably prevent the separation of air bubbles from the fine solid.

  Furthermore, the sludge wiper 13 rotates in the horizontal direction starting from the vertical central axis G of the processing tank 2, and the rectifying unit 8 is coaxially connected below the sludge wiper 13, so that the sludge wiper 13 rotates. If the flow straightening unit 8 can be provided above the processing tank 2 without blocking the movement, and if the flow straightening unit 8 has a concentric shape with a vertical central axis G in horizontal sectional view, then the flow straightening unit 8 is coaxial with the sludge wiper 13 Even if it rotates, the rectification | straightening function can be exhibited by the rectification | straightening part 8, without disturbing the waste water in the processing tank 2. As shown in FIG.

  In addition, since the air pump 49 is a micro-bubble generating device 49a, it is possible to adhere minimal air bubbles to almost all the fine solid substances, so it is possible to take out treated water having a very high purification level.

  As mentioned above, although the preferable embodiment of the fine-solids separation apparatus based on this embodiment of this invention was described, this invention is not limited to a specific embodiment, A various deformation | transformation and change are possible.

H Liquid Level S Purified Liquid (Treated Water)
W Sewage G Vertical central axis 1 Fine solid separation device 2 Treatment tank 3 Sewage introduction pipe 5 Sewage guide pipe 6 鍔 8 Rectification section 13 Sludge wiper 23 Sludge shooter 32 Discharge pipe 49 Air pump 49a Micro bubble generator

Claims (3)

It is a purifier that is a processing tank that separates sewage into solids and liquid,
Sewage introduction pipe for introducing sewage into the treatment tank from the outside,
Upper and lower opening dirty water guide pipes communicating with the dirty water introduction pipe in the treatment tank;
A straightening unit disposed above the dirty water guide pipe with a predetermined gap and straightening the dirty water flowing out from the upper opening of the dirty water guide pipe;
A sludge wiper which is disposed at a predetermined gap above the flow straightening unit and which collects fine solid matter of the floated water;
A sludge shooter that contains the fine solid matter collected by the sludge wiper and discharges it out of the treatment tank;
A discharge pipe for discharging the purified liquid from the processing tank;
A water level adjusting container having a water level adjusting portion in communication with the discharge pipe for finely adjusting the level of the liquid surface of the processing tank;
And a micro-bubble generator connected to the sewage introduction pipe outside the treatment tank for mixing air bubbles into the sewage.
The dirty water introduction pipe penetrates the inside of the dirty water guide pipe, and is bent upward and bent so that the open end is vertically upward inside the dirty water guide pipe, and the dirty water guide pipe is upward at the upper end Form an expanded cocoon,
The sludge wiper rotates in the horizontal direction starting from the vertical central axis of the processing tank, and the straightening unit is coaxially connected below the sludge wiper,
The straightening unit is formed in a tip-shaped top-piece-shaped, lower end including a conical straight lower surface and a cylindrical straight side surface .
The water level adjusting portion is formed such that the upper end portion of the discharge pipe protrudes from the bottom portion of the water level adjusting container, and the peripheral side surface of the protruding portion is threaded to form a cylindrical male screw pipe. What is claimed is: 1. A fine solid separation device characterized in that a screwed cylindrical female screw tube is configured to be screwable . The bottom of the processing tank is provided with a sediment discharge pipe for discharging the deposited sludge to the outside of the processing tank, and the sediment discharge pipe extends horizontally from the vicinity of the bottom of the processing tank and stands upward 2. The fine solids separation device according to claim 1, wherein an air introduction pipe for feeding air to a middle portion of the sediment discharge pipe is connected in communication . The minute solid separation device according to claim 2, wherein the straightening unit has an annular bubble breaking portion surrounding the straight side surface at a middle portion of the straight side surface.

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