JP4228217B2 - Water purification waterway device - Google Patents

Description

  The present invention relates to a water purification waterway device for purifying water quality in domestic drainage channels, agricultural waterways and other waterways.

River water after being used as agricultural water, industrial water, and water for daily use returns to the basin again after being polluted. Livestock wastewater and forest pollutants also flow into the basin. The polluted river water has a great impact on the ecosystem and human health. On the other hand, when a large amount of organic substances are contained in the water that returns to lakes, inland seas, bays, etc., excessive amounts of nitrogen and phosphorus become eutrophic, resulting in abnormal growth of blue-green algae and diatoms. Occurrence or red tide occurs, causing bad odor and causing damage to fish and shellfish. Many rivers flowing into lakes and bays are connected to drainage channels for agriculture, industry and daily life, and there are many channels that flow directly into lakes and bays. Water purification of these channels is used in downstream areas. It is no exaggeration to say that it is indispensable for water treatment or maintaining a healthy ecosystem in bays and lakes. Conventionally, for example, Patent Document 1 (Japanese Patent Laid-Open No. 6-330550) has been proposed which intends to purify water quality in a water channel.
JP-A-6-330550 (Description 0001, FIG. 1)

  In the water quality purification channel of Patent Document 1, a partition plate having a through hole is fixed in parallel to the side wall of the water channel in the water channel, and stones, earth and sand are inserted between the partition plate and the side wall of the water channel to purify the water quality. What is intended is shown. However, this water purification water channel has a structure that is divided into two in the longitudinal direction into a water channel part through which drainage etc. flows by a partition plate in the water channel and a purification part in which stones or the like as a purification member are arranged. A lot of water flows to the side of the waterway with a large cross section, and not only can not perform an efficient water quality purification function, but if many purification members such as stone are filled, the through hole is blocked and the flow resistance is increased from the waterway part. There was almost no inflow of water to the purification section, and the purification efficiency was low. In addition, since the purification section is simply filled with small limestone and concrete blocks irregularly, the sediments and dust that are washed away from the upstream side over time and at an early stage flow into the purification stones. There is a high risk of clogging into the gaps between them, causing clogging and impairing the purification function immediately, resulting in a problem that an effective and practical water channel cannot be constructed. Furthermore, the maintenance such as removal of clogged sand needs to be frequently performed, and there is a problem that it takes labor and work cost and hinders operation.

  The present invention has been made in view of the above-described conventional problems, and one of its purposes is that the purification efficiency is extremely good with a simple configuration, the purification ability can be maintained for a long period of time, the maintenance is simple, and the utility is excellent. Another object of the present invention is to provide a water purification water channel device.

  In order to achieve the above object, the present invention is a plurality of partition gates installed at a required interval in the longitudinal direction of the water channel frame 10 that guides the entire water flow and provided to block the water flow in a plurality of stages. The partition gates 14 each have a flow passage hole 12 near the bottom 10 a of the water channel frame 10, and generate a strong flow wash-out flow F that flows between the flow passage holes 12 near the bottom of the water flow frame 10. And a movable aeration apparatus including porous concrete moldings 18, 181, 182, and 183 that are disposed between the partition gates 14 and are periodically displaced in a state in which a part or the whole is submerged in water and a state in which they are exposed to the air 16 and a water purification water channel device characterized by comprising An infinite number of microorganisms inhabit the porous concrete molded body to decompose organic matter, and as part or all of the porous concrete molded body is displaced between air and water, oxygen is directly introduced into the pores of the concrete. In particular, the aerobic microorganism is activated and the organic matter decomposing function is promoted. Furthermore, the function of stirring the water is generated by the displacement movement of the porous concrete molded body, and the undecomposed organic matter is always brought into contact with microorganisms, thereby contributing to the decomposition and removal action thereof. Here, the specific configuration of the movable aeration apparatus is arbitrary. For example, one or more porous concrete molded bodies are fixed to a part of a chain or the like, and the chain or the like is moved around, so that it is immersed in water. You may make it periodically displace between a state and the state exposed in the air. Alternatively, the porous concrete molded body may be fixed to a slider that slides up and down or obliquely, and the slider is periodically slid and driven to move between water and air. The specific shape, structure, size, etc. of the porous concrete molding may be arbitrarily set. The specific period of the porous concrete molded body that periodically displaces in water and air is arbitrary, but it seems that aerobic bacteria activity will not be promoted even if displaced at high speed, so for example several times a minute It may be a low speed movement of about tens of times. The period may be a constant period or an indefinite period. Furthermore, since the strong wash-out flow F that flows between the channel holes 12 is washed away sediment and microbial residues, sludge sedimentation from the center to the bottom of the water channel frame can be prevented, and displacement movement by the movable aeration device Synergistically, the organic substance decomposition function can be made effective. The water in the water channel frame is blocked by the partition gate, the flow channel cross-section is greatly narrowed, sucked at a high speed from the flow channel hole 12, and discharged to the next partition step side. The distance between the partition gates is such that a relatively strong wash-out flow F that always flows so as to connect the respective channel holes of the upstream partition gate and the partition gate facing the partition gate is always generated. Is set. Further, when there is no flow in the water channel, for example, a flow may be artificially generated via a pump or the like on the upstream side, or an auxiliary forced flow may be created to facilitate flow.

  At that time, the porous concrete moldings 18, 181 to 183 are preferably made of a rotating body that rotates around the support shafts 20, 40, 50 in a state where at least a part thereof is submerged in water. By using a rotating body, periodic displacement movement between underwater and air can be easily realized. The specific shape and structure of the porous concrete molded body as the rotating body may be arbitrarily set, such as a wheel shape or a bucket turbine shape. In addition, the outer shape of the rotating body may be a quadrangle, a pentagon, a hexagon, or other polygonal shapes. Periodic displacement movement between the water and the air is realized, for example, by rotating at a low speed with only the upper part of the rotating body in the air. The rotation period may be set by controlling the rotation by, for example, taking out the rotation shaft and forcibly rotating the rotating body with external power such as a motor. It is preferable to use thrust to cause natural rotation by water flow.

  The movable aeration apparatus 16 may include a rotating body that rotates about an axis 20 that is orthogonal to the flow of water. The bearings are formed on both side walls of the channel frame, and the support shaft 20 is rotatably mounted on the both sides. In addition, it realizes circular displacement movement in water and in the air by a rotating body as a porous concrete molded body.

  The movable aeration apparatus 16 may include a rotating body that rotates about axes 40 and 50 parallel to the flow of water. In this case, for example, a support shaft may be passed between the partition gates directly opposed to each other and rotatably supported. In this case, the rotating body as a porous concrete molded body rotates around a support shaft whose axis is in the direction along the water flow, and rotates in a so-called screw shape.

  Furthermore, in that case, the rotating body may be formed in a continuous spiral around an axis 50 parallel to the flow of water.

  Further, the rotating body may be provided with blade bodies 30, 48, and 58. By providing the blades, the washout flow F is effectively received, and only the thrust of the washout flow F eliminates the need for an external motor, etc., and realizes periodic displacement movement between water and air, reducing maintenance or operating costs. sell.

  The rotating body may be a disc body, and may be provided with several or many through holes 28 and 46 that penetrate in the thickness direction. The function of stirring water by turbulent flow around the porous concrete molding is generated, and the contact rate of undecomposed organic matter to microorganisms is improved. The shape, number, distribution degree, and the like of the through holes may be arbitrarily set as long as the water stirring function is not impaired.

  The porous concrete molded body 182 may be composed of a blade block 54 that protrudes in a radial direction from a support shaft 50 that is rotatably provided. The number of blade blocks is at least a plurality, preferably 6 to 20 in the circumferential direction, and more preferably about 12 in the circumferential direction.

  Furthermore, the flow path hole 12 may be disposed at a misalignment position with respect to the water flow direction.

  The present invention is a plurality of partition gates installed at necessary intervals in the longitudinal direction of a water channel frame that guides the entire water flow, and is provided so as to block the water flow in a plurality of stages, each flowing toward the bottom edge of the water channel frame. A partition gate that has a channel hole and generates a wash-out flow of strong flow that flows between the channel holes near the bottom of the water channel frame, and a part or all of the partition gate is submerged in water. The aerobic bacteria are activated by a water purification aqueduct device comprising a movable aeration apparatus including a porous concrete molded body that is periodically displaced to a state of being exposed to air and a state of being exposed to the air. The function of decomposing organic matter is greatly improved, and the bottom portion is prevented from becoming sludge, and the water purification function can be specifically realized. In addition, since the washing flow effectively removes the residue that has detached from the biofilm that is a microbial community, maintenance such as periodic scooping up of the bottom of the waterway is almost unnecessary, and the purification function is maintained for a long time, It is possible to provide a water purification channel device that is excellent in practical use.

  In addition, the porous concrete molding has a structure that consists of a rotating body that rotates around the spindle while at least a part of it is submerged in water, so that a periodic displacement movement configuration between water and air can be easily realized. In addition, the degree of freedom of manufacturing a porous concrete molded body as a rotating body is high, and rotating bodies having various outer diameters, shapes, and structures can be manufactured at low cost as required.

  In addition, the movable aeration apparatus is configured to include a rotating body that rotates around an axis orthogonal to the flow of water, thereby easily realizing a rotating body that is radially rotating with respect to the water flow. The periodic displacement movement configuration can be effectively implemented.

  In addition, the movable aeration apparatus is configured to include a rotating body that rotates about an axis parallel to the flow of water, thereby easily realizing a screw rotating type rotating body configuration, and periodic displacement between water and air. Effective movement configuration.

  In addition, the rotating body is formed in a continuous spiral shape around an axis parallel to the water flow, so that it is possible to easily realize a periodic displacement movement configuration between the water and the air. The rotation integrated with the water flow around the axis contributes to the effect of agitation by large movements and, in turn, the function of decomposing undecomposed organic matter.

  Further, the rotating body is provided with a blade body, so that the rotating body receives rotation flow F and converts its thrust into the rotating direction of the rotating body to maintain the rotation of the rotating body without requiring external power. In addition, the organic substance decomposition and removal action is promoted by the stirring action.

  In addition, the rotating body is formed of a disk body and has a structure in which several or many through-holes are provided to penetrate in the thickness direction, so that turbulent flow is surely generated on the surface portion of the porous concrete molded body. Promotes reliable decomposition of undecomposed organic matter by microorganisms that inhabit porous concrete moldings, and contributes to water purification.

  In addition, the porous concrete molded body is composed of a blade body block that protrudes in the radial direction from a support shaft that is rotatably provided, thereby reducing the contact area between the blade block that is a porous concrete molded body and water. By enlarging, the decomposition treatment action of the undecomposed organic matter by microorganisms living in the porous concrete molding can be promoted.

  Further, the flow path hole 12 is arranged at a misalignment position with respect to the direction of water flow, so that the bottom of the bottom area as wide as possible can be washed out of earth and sand, microbial residues, etc. In addition to preventing this, a stirring action can also be performed by causing a serpentine flow.

  The best mode for carrying out the present invention will be described below with reference to the accompanying drawings. According to the present invention, a water channel frame is divided in a longitudinal direction by a partition gate to provide a plurality of partition steps, and a flow path hole is formed at the lower part of each partition gate so that the flow path holes are connected at the vicinity of the bottom of the water channel frame. This is a water purification water channel device in which a washing flow that causes a strong flow to flow through is generated, and a movable aeration device including a porous concrete molded body is provided in each partition stage.

  1 to 8 show a water purification channel device according to a first embodiment of the present invention. As shown in FIGS. 1 and 2, this water purification channel device is applied to an open channel having an upper surface opened. An example is shown. The water purification channel device of the present invention may be applied to a closed channel. In the present embodiment, the water purification water channel device includes, for example, a plurality of partition gates 14 provided with flow path holes 12 provided so as to block the RC concrete water channel frame 10 at a plurality of locations in the longitudinal direction, And a plurality of movable aeration devices 16 disposed between the partition gates. The water channel frame 10 is an outer frame of a water channel that guides the entire water flow such as river water flowing in the water channel and various wastewaters to the downstream side. In this embodiment, water flows from the upstream toward the downstream river region due to the gradient difference. It is supposed to be. In the present embodiment, the water channel frame 10 is formed in a U shape having an upper surface opened, but the water channel frame may be formed in an inverted trapezoidal shape in which the bottom width is smaller than the water surface width. In the following embodiments, a U-shaped channel frame will be described for the sake of illustration, but all the following examples can be similarly applied to inverted trapezoidal channel frames. In the present embodiment, the partition stage 151 provided with the movable aeration device 16, the partition stage 152 provided with a gap between each other in a state where, for example, a porous concrete panel is placed horizontally in a flow, or a phosphorus adsorbent However, the movable aeration apparatus according to the present embodiment may be attached to all the partition stages.

  1 to 7, a plurality of partition gates 14 are provided at a required interval in the longitudinal direction of the water channel frame 10 so as to block the flow of water in a plurality of stages. As shown in FIGS. 1, 2, and 6, the partition gate 14 is formed of, for example, an RC concrete plate standing in a direction perpendicular to the water flow in the water channel frame. The partition gate 14 is provided in advance on the inner surface side of the side wall 10b of the water channel frame and a structure in which a receiving groove and a protrusion (not shown) provided on the side of the partition gate are slid and fitted from the upper side. The guide is inserted into the set position of the water channel frame. The length of the water channel frame in the longitudinal direction of the partition gate 14 is set to about 2 m to 5 m, for example, when the partition gate size is 2 m wide and 1.5 m long, and is provided to block the flow of water in the water channel frame in multiple stages. It has been. The partition gate may be made of porous concrete, a molded body with strength strengthened thereto, or may be made of rust-proof metal or plastic as long as strength can be secured.

Each partition gate 14 has a flow path hole 12 near the bottom of the water channel frame, and generates a washout flow F having a strong flow that flows through the channel hole 10 so as to connect the flow path holes in the vicinity of the bottom 10a of the water channel frame 10. .
In FIGS. 1, 2, 5, 6, and 8, the flow path hole 12 is formed of a semicircular hole in which a portion in contact with the bottom 10a is cut out in an arc shape, and passes through the partition gate to partition the upper and lower sides of the partition gate. Connect the steps. As shown in FIG. 7, the flow of water is sucked and discharged at a large flow rate when it exits from the flow path hole 12, which is the only opening part of the partition gate as a blocking wall, to the next partition stage side. A constant washout flow F that flows so as to connect between the passage holes 12 always flows, always wash away dirt and sand particles so that they do not collect on the bottom of the water, and microorganisms when using porous concrete The biofilm residue that leaves is always washed away downstream to prevent its sedimentation and to prevent sludge formation in the water channel frame including the bottom. A part of the wash-out flow F collides with the partition gate on the downstream side, reverses to become a reverse flow R, and joins the wash-out flow F again. The hole shape and size of the flow path hole 12 can be set to any shape and size as long as the washing function is not hindered.

  In this embodiment, as shown in FIG. 8, each upstream side partition gate and the downstream side partition gate channel hole 12 facing this are arranged at misalignment positions with respect to the water flow direction. . As a result, the wash-out flow flows in a meandering manner in the partition steps obliquely in plan view, so that the sand and the like are washed out at the bottom of the water area as wide as possible in each partition step, and a meandering flow is generated. Thus, the stirring action is also performed in combination with the movable aeration apparatus.

  1, 2, 4, and 5, a movable aeration apparatus 16 including a porous concrete molding 18 is provided between one opposing partition gate 14. The porous concrete molding 18 is a microorganism-carrying porous concrete molding in which a part or all of the porous concrete molding 18 is periodically displaced between being immersed in water and exposed to air. Aerobic microorganisms inhabit the pores. In the present embodiment, the porous concrete molded body 18 is formed of a rotating body that is mainly rotated by the washing flow F. And this movable aeration apparatus supplies the oxygen in air to the countless hole of a porous concrete molding, and activates the microorganisms which inhabit there. At the same time, porous concrete moldings are periodically displaced between a part or all of them in a state of being immersed in water and a state of being exposed to the air, thereby turbulently agitating the surrounding water and stirring the fresh water. It is supplied to the inside of the porous concrete molded body so that a large amount of organic substances contained therein can be easily taken up by microorganisms.

  In the embodiment, in the partition stage 151, a support shaft 20 made of a stainless steel rod or the like is rotatably supported so as to be orthogonal to the flow of water. That is, the bearings 22 are embedded in the side walls of the water channel frame 10 in the longitudinal direction of the partition stage 151 and in the middle of the upper and lower sides, and supported by the bearings 22 so that the support shaft 20 is rotatably supported. A porous concrete molded body 18 assembled in a cylindrical drum shape is attached to the support shaft 20, and is provided to be freely rotatable. In the embodiment, the porous concrete molded body is configured as a rotating body, and is rotatably supported in a state in which a portion near the upper end portion of the rotating body always protrudes from the water surface into the air. Specifically, as shown in FIG. 5, the porous concrete molded body 18 includes a cylindrical body portion 24 that is integrally formed by embedding the support shaft 22 so as to surround the outer periphery of the support shaft 22, and a body portion 24. And three porous concrete disks 26 fixed with a required gap in the longitudinal direction as a central axis. The trunk portion 24 is formed of, for example, RC concrete, and three porous concrete discs 26 are integrally fixed to the RC concrete in such a manner that the central portion is joined. As shown in FIGS. 4 and 5, the porous concrete disc 26 at the longitudinal intermediate portion of the body portion is set shorter than those at both ends thereof and is provided so as not to overlap the flow path hole 12. The trunk portion 24 and the three porous concrete disks 26 rotate together with the support shaft 20 so as to rotate in a radial manner with respect to the washing flow F.

  As shown in FIGS. 2 and 4, the porous concrete molded body 18 rotates around the support shaft 20 orthogonal to the water flow in a state where at least a part thereof is submerged in water. That is, the three porous concrete discs 26 are periodically displaced between a state where a part of the porous concrete disc 26 is immersed in water and a state where it is exposed to the air. As a result, aeration is performed while water and air are exchanged in a void of, for example, 25 to 30% porosity of the porous concrete disk in a direction parallel to a plurality of water flows with a gap G between each other and standing. Porous concrete is not concrete as a closed-cell molded body adopted for lightweight concrete, but the proportion of fine aggregate to coarse aggregate is extremely low compared to ordinary concrete, and the open pores are around 20-30%. It is a porous concrete having a rate, and microscopically, it is a molded body in which water components can freely move through both plate surfaces. Innumerable pores in porous concrete are inhabited by aerobic microorganisms, and organic substances in the water flowing through the waterways are decomposed into carbon dioxide and water, and nitrogen compounds are decomposed into nitrogen gas. Furthermore, in this embodiment, the porous concrete disk 26 is installed so as to divide the flow of water in the partition stage substantially evenly in a plan view, and holds the gap G between them. A part of the washed-out flow F enters the gap G between the plurality of porous concrete discs 26 and is turbulent. Meanwhile, the porous concrete molding 18 rotates at a low speed, and when it is again washed and joined to the flow F, it sufficiently contacts each porous concrete disk 26 and efficiently contacts organic matter contained in other drainage portions to be purified. This allows organic matter to be taken up effectively by microorganisms. Further, aeration is performed while water and air are exchanged in the voids of the porous concrete, so that oxygen in the air is directly supplied into the pores of the porous concrete to promote the activity of aerobic microorganisms. Note that the gap G is not necessarily equal and may be set to be different as appropriate.

  Further, in the present embodiment, as shown in FIGS. 2 to 5, the outer circumferential edge of the porous concrete disc 26b in the longitudinal middle portion of the trunk portion, which is set to have a shorter radial length than those at both ends, The blade body 30 is fixed so that a rectangular gap formed by the inner wall portions of the porous concrete disks 26a and 26c on both ends is directed in the direction U from the central axis toward the outside. The blade body 30 is formed of a thin rectangular plate, and is inserted into the slit holes of the porous concrete disks 26a and 26c on both ends, and is fixed at twelve pitches at a required pitch interval over the entire circumference of the disk 26. Yes. The blade body 30 is attached to the outer periphery of the porous concrete disk as a rotating body or a part thereof, and rotates at a low speed, for example, in the counterclockwise direction in FIG. 3 by the washing flow F through the channel hole 12 at the bottom. At that time, the part of the rotating body partly projecting from the water surface WL is periodically displaced into a state where it is immersed in water and a state where it is exposed to the air.

  Furthermore, in this embodiment, as shown in FIGS. 2 and 4, each porous concrete disk 26 itself has several or many pieces provided so as to penetrate the plate surface 26a to the other plate surface side facing each other. The through hole 28 is included. The through hole 28 generates a turbulent flow C including many vortices in the flow of water flowing into the gap G between the porous concrete discs, causing a stirring function to exchange water, so that fresh water is always kept in the porous concrete circle. It is a stirring function generating means that always permeates the surface of the plate 26 or the inside thereof and supplies undecomposed organic matter to microorganisms in the micropores.

  In the present embodiment, a large number of through holes 28 arranged at substantially equal intervals are provided so as to penetrate the plate surface of the porous concrete disc 26 in the direction intersecting the water flow (in the orthogonal direction in the present embodiment). The through hole 22 may be set to an arbitrary hole shape, size, gap pitch, arrangement mode, density and the like in consideration of the opening ratio of the panel body and the contact efficiency of the undecomposed organic matter due to the stirring function.

  Furthermore, in the present embodiment, a hook-shaped auxiliary wall 32 is formed to project from the wall portion of the opposing partition gate 14 toward the central porous concrete molding 18. The auxiliary wall 32 itself is molded from porous concrete, is divided into a bowl shape corresponding to the outer peripheral size of the porous concrete molded body 18, and is recessed so as to correspond to the outer periphery of the disk 26. A circular arc cage 34 is provided. As a result, the gap between the projecting edge portion of the arc wall 34 of the auxiliary wall 32 and the outer peripheral portion of the three porous concrete discs 26 is reduced, and the blade 30 is pushed out by the wash-out flow F and the lifting force is efficiently rotated. To communicate. In addition, a plurality of through holes 36 penetrating both plate surfaces are also provided at appropriate positions in this arc wall.

  Next, the operation of the water purification water channel device of this embodiment will be described. For example, when there is always a certain amount of water flow, the flow channel cross section of the water in the water channel frame can be greatly narrowed by the partition gate 14 as shown in FIG. According to Bernoulli's theorem, the water is sucked at a large flow rate from the channel hole 12 of each partition gate and discharged from the channel hole 12 to the next partition stage. As a result, a strong and constant flow that flows so as to linearly connect the flow path holes 12 flows as the wash flow F, and causes sludge such as soil and sand that converges on the bottom of the water channel or biofilm residue. The substance is always washed out downstream. At this time, a movable aeration device 16 is provided between the partition gates 14 of one partition stage, and a porous concrete molded body 18 as a rotating body is rotatably supported. Therefore, a strong flow that flows through the bottom of the channel frame. This washing flow F propels the blade body 30 of the porous concrete disk 26 and drives the porous concrete molding 18 around the support shaft 20 at low speed. As a result, the part of the rotating body protruding partly from the water surface WL in the air is periodically displaced between being immersed in water and exposed to the air. Aeration is performed while air is exchanged, and a sufficient amount of oxygen is supplied to microorganisms that inhabit the micropores.

  At this time, since the plurality of porous concrete discs 26 are arranged in a state standing in parallel to the water flow and with a necessary gap G therebetween, a part of the water in the washing flow is diverted at a constant rate. In addition, the contact area is increased and the porous concrete molded body 18 is sufficiently contacted to improve the decomposition and removal efficiency of the organic matter in the body decomposition. Further, the water from the upstream side flows into a large number of through holes, and is combined with the flow flowing through the through holes of the adjacent partition gates to form a complicated flow, generating many vortex flows and turbulent. By the stirring function of these through holes 28, a portion of water containing undegraded microorganisms is always supplied to improve the microbial decomposition efficiency.

  The porous concrete disk 26 of the porous concrete molded body 18 is a plate-shaped molded body that is installed in a water channel frame and always generates a constant diversion, and is further maintained without clogging of earth and sand due to the washout flow F at the bottom. Is almost unnecessary. In addition, since the porous concrete disk 26 itself having a purification function functions as a water flow rectifying plate for increasing the contact area, water quality purification can be efficiently realized. Not only that, but the porous concrete molded body is provided with the through-hole 28 as the stirring function generating portion, so that the water is sufficiently replaced and water containing undecomposed organic matter is always in the micropores of the porous concrete molded body. Supplied to microorganisms to ensure the effectiveness of the water purification function. Moreover, by setting the flow passage hole of the partition gate at the misalignment position, sediment accumulation at the bottom is prevented, and the water flow stirring function is promoted. In the embodiment of FIG. 1, the partition stage configuration using the porous concrete molded body 18 made of the thick plate as the rotating body described above, and the partition stage provided with a porous concrete panel body in the adjacent partition stage, Partition stage with movable aeration equipment. . . However, for example, a partition step in which a porous concrete panel body containing a phosphorus adsorbent is disposed may be mixed and arranged in the longitudinal direction. Further, the support shaft 20 may be projected from the side wall of the water channel frame to the outside in a state where the bearing portion is watertightly sealed with a seal rubber, and may be rotated by a motor drive.

  Next, based on FIG. 9, FIG. 10, although the water purification water channel apparatus which concerns on 2nd Embodiment of this invention is demonstrated, the same code | symbol is attached | subjected to the same member as 1st Embodiment, and the detailed description is Omitted. The water purification channel device of the second embodiment differs from the first embodiment in the specific configuration of the porous concrete molded body 18 and its support structure. In this embodiment, the porous concrete molded body 181 is the same as that of the first embodiment in the configuration including a rotating body that rotates around the support shaft in a state where at least a part thereof is submerged in water. The first embodiment is largely different from the first embodiment in that it includes a porous concrete molded body 181 as a rotating body that rotates around a spindle 40 parallel to the flow of water. In this embodiment, a bearing 42 is supported by the opposing partition gates 14, and a support shaft 40 is supported by the bearing 42, and a porous concrete molded body 181 is rotatably supported around the support shaft. The support shaft 40 is positioned so that a part of the porous concrete molded body 181 is submerged in the water in the water channel frame, and the central part of the water channel frame is installed between the two partition gates. .

  In the present embodiment, the porous concrete molded body 181 has a plurality of thick plate-like porous concrete discs 44 whose center portions are fixed in a skewered manner with the support shaft 40 provided long along the water flow as a common shaft. Consists of. A required gap G is provided between the porous concrete disks 44. A plurality of through holes 46 are formed so as to penetrate both plate surfaces of the porous concrete disc 44. That is, the through hole 46 is formed in a direction parallel to the flow of water. Further, as shown in FIG. 10, a plurality of blade bodies 48 are provided on the outer peripheral surface of each porous concrete disk 44 over the outer periphery so as to intersect at a required oblique angle with respect to the flow in the longitudinal direction of the water spindle. It is attached. This blade body 48 receives the wash-out flow F flowing through the bottom 10a of the water channel frame 10 and converts it into a rotational force in the set rotational direction, and rotates the entire porous concrete molded body around the axis. At this time, as a result of the periodic displacement of the part of the rotating body protruding partially from the water surface WL into a state of being immersed in water and a state of being exposed to the air, the micropores of the porous concrete disk are removed from the water. Aeration is performed while air is exchanged, and a sufficient amount of oxygen is supplied to microorganisms that inhabit the micropores. Further, turbulent flow is generated by several or a large number of through-holes penetrating the porous concrete disc 44 to effectively supply undecomposed organic matter to microporous microorganisms. The organic matter decomposition function of the porous concrete molded body including the porous concrete disc, the active action of aerobic microorganisms through direct uptake of oxygen, and the function of promoting organic matter uptake into microorganisms through stirring of water through the through holes are the same as in the first embodiment. It is the same. Moreover, the biofilm residue removal by the washing-out flow, the sludge prevention, and the washing-out function such as earth and sand can be performed as in the first embodiment.

  Next, a third embodiment of the present invention will be described with reference to FIGS. 11 to 14. However, the same members as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. In this embodiment, the point that the movable aeration apparatus 16 includes a rotating body that rotates around an axis parallel to the flow of water is the same as in the second embodiment, but the specific configuration of the porous concrete molded body 182 and the water channel frame are the same. The shape of 10 is different from the above embodiment. In this embodiment, ordinary RC concrete is molded and fixed in the surrounding embedding shape on the outer periphery of the support shaft 50 that is installed between the opposing partition gates 14 and is rotatably supported to form the body portion 52. A plurality of blade blocks 54 made of porous concrete are projected from the body 52 in the radial direction. In the embodiment, the blade block 54 is formed of a block that is long in one direction having a flat elliptical cross section as shown in FIG. 14, and is in a cross shape and set at an oblique angle with respect to the direction of water flow. The one end side is fixed through a support pin hole 55 provided on the small cross-section side so as to project in the radial direction. For convenience of illustration, in the present embodiment, only four blade blocks 54 are provided in a cross shape around the trunk, but for example, a projected shape viewed in the axial direction at a ratio of about one at a central angle of 30 degrees. It is preferable to project about 12 so as to have a circular shape with no gap. In addition, you may set the number of this blade | wing body itself arbitrarily. Further, the blade block 54 is set such that the projecting end in the radial direction has a larger cross-sectional elliptical shape than the base portion that is the joint portion side with the body portion 52. As shown in FIG. 12, when the wash-out flow F flows between the flow path holes 12, it surely strikes the large cross section of the tip of the blade body block 54, and rotates with a predetermined rotational torque. In this embodiment, the water channel frame 10 is formed in a shape including a semicircular arc-shaped inner wall with a small gap from the circular outline corresponding to the axial rotation circular projection shape of the blade block. ing. In this way, by forming the inner wall shape including the bottom wall along the outer edge of the spiral molded body, the energy of the water flowing in the axial direction is converted to the driving force in the rotation direction of the rotating body without waste, and the flow of water I try to rotate it. Also in this third embodiment, when rotating around the entire axis of the porous concrete molding 182, a part of the rotating body protruding partly in the air from the water surface WL is immersed in water and a state exposed to the air. As a result, the micropores of the porous concrete disk are aerated while water and air are exchanged, and a sufficient amount of oxygen is supplied to the microorganisms living in the micropores. The organic matter decomposing function of the porous concrete molding, the aerobic microorganism active action by direct oxygen uptake, and the organic substance uptake promoting function to the microorganism through the stirring of water through the through holes are the same as in the first embodiment. Moreover, the biofilm residue removal by the washing-out flow, the sludge prevention, and the washing-out function such as earth and sand can be performed as in the first embodiment.

  Next, a fourth embodiment of the present invention will be described with reference to FIGS. 15 to 17, but the same members as those of the above-described embodiment are denoted by the same reference numerals, and detailed description thereof will be omitted. In this embodiment, the point that the movable aeration apparatus 16 includes a rotating body that rotates around an axis parallel to the flow of water is the same as in the second embodiment, but the specific example of the porous concrete molded body 183 as the rotating body is as follows. A structure and the shape of the water channel frame 10 differ from the said embodiment. In this embodiment, the rotating body as the porous concrete molding 183 is formed in a continuous spiral around an axis 50 parallel to the flow of water. The continuous spiral molded body 56 is obtained by combining a plurality of form frames to form a spiral gap and placing porous concrete therein. Furthermore, a blade body 58 made of, for example, a synthetic resin or a corrosion-resistant light metal is attached to the outer edge portion of the spiral molded body 56 so as to circulate in a continuous spiral shape. Further, in this embodiment, the water channel frame 10 has a shape including a semicircular arc-shaped inner wall with a small gap from the circular outline corresponding to the axial circular projection shape of the spiral molded body 56. Is formed. In this way, by forming the inner wall shape including the bottom wall along the outer edge of the spiral molded body, the energy of the water flowing in the axial direction is converted to the driving force in the rotation direction of the rotating body without waste, and the flow of water I try to rotate it. Here, as shown in FIG. 15 and FIG. 17, when the wash-out flow F flows between the flow path holes 12, it surely strikes the thin blade-like blade body 58 on the outer edge of the helically molded body 56 and has a predetermined rotational torque. To produce and rotate. Also in the fourth embodiment, when rotating around the entire axis of the porous concrete molded body, the part of the rotating body protruding partly in the air from the water surface WL is submerged in water and exposed to the air. As a result of periodic displacement, the micropores of the porous concrete disk are aerated while water and air are exchanged, and a sufficient amount of oxygen is supplied to microorganisms living in the micropores. The organic matter decomposition function of the porous concrete molded body including the porous concrete disc, the active action of aerobic microorganisms through direct uptake of oxygen, and the function of promoting organic matter uptake into microorganisms through stirring of water through the through holes are the same as in the first embodiment. It is the same. Moreover, the biofilm residue removal by the washing-out flow, the sludge prevention, and the washing-out function such as earth and sand can be performed as in the first embodiment.

  The water purification water channel apparatus described above is not limited to the configuration of the above-described embodiment alone, and may be arbitrarily modified without departing from the essence of the invention described in the claims. Also in the second to fourth embodiments described above, a partition step in which a porous concrete panel plate is erected in the same manner as in FIG. 1, a partition step for containing a phosphor absorbent material, and other arbitrarily configured partition steps are mixed in an arbitrary arrangement. May be applied. Moreover, you may extend only the partition stage which has arrange | positioned the movable aeration apparatus of this invention by arbitrary arrangement structures. At that time, the porous concrete panel plate itself is provided with a concavo-convex structure on one or both sides of the plate, formed with a through hole, or provided with a porous fiber compression body portion to perform a stirring function, thereby introducing microorganisms into the microorganism. Organic matter uptake may be promoted. Further, the partition gate may be constituted by a porous concrete plate reinforced by arranging a rebar-like reinforcing bar, for example, instead of normal RC RC concrete.

  The water purification water channel device of the present invention can be applied to agricultural, industrial, domestic water channels, and other general water discharge water channels to effectively purify the water quality.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially omitted perspective explanatory view of a water channel to which a water purification water channel device according to a first embodiment of the present invention is applied. It is a partially cutaway perspective explanatory drawing of the structure in one partition stage of the water purification water channel device concerning a 1st embodiment of the present invention. FIG. 3 is an explanatory plan view of the apparatus in a state where the omission of FIG. 2 is not performed. FIG. 4 is a sectional view taken along line AA in FIG. 3. FIG. 4 is a sectional view taken along line BB in FIG. 3. It is a perspective explanatory view of the partition gate arrangement configuration in which the inside of the partition stage of the water purification water channel device of FIG. 1 is omitted. It is a cross-sectional action explanatory drawing shown in the state which has arrange | positioned only the partition gate of the water purification water channel apparatus of FIG. It is an expansion explanatory view seen from the water flow front side of the partition gate of FIG. It is a partially-omission perspective explanatory drawing of one partition stage of the water purification water channel device concerning a 2nd embodiment of the present invention. FIG. 10 is a perspective explanatory view of one porous concrete molded body of the apparatus of FIG. 9. It is a partially-omission perspective explanatory drawing of one partition stage of the water purification water channel device concerning a 3rd embodiment of the present invention. It is the axial direction front view which looked at the rotary body which assembled | attached the porous concrete molding block of the apparatus of FIG. 12 from the axial direction. FIG. 13 is an explanatory plan view of the rotating body of FIG. 12. It is an expansion perspective explanatory view of one porous concrete blade block attached to the rotating body of FIG. It is a partially cutaway perspective explanatory view of a water purification channel device according to a fourth embodiment of the present invention. FIG. 16 is a perspective view of the rotating body of the apparatus of FIG. It is longitudinal cross-sectional explanatory drawing of the apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Water channel frame 10a Bottom wall 12 Channel hole 14 Partition gate 16 Movable aeration apparatus 18 Porous concrete molding 20 Support axis 26 Porous concrete disc 30 Blade body 36 Through hole 40 Support axis
42 Bearing 44 Porous concrete disk 46 Through hole 48 Blade body 50 Support shaft 54 Blade body block 56 Spiral molded body 58 Thin plate-shaped blade body 181 Porous concrete molded body 182 of the second embodiment 182 Porous concrete molded body 183 of the third embodiment Porous concrete molding of the fourth embodiment F Wash out flow G Gap R Reverse flow

Claims (9)

A plurality of partition gates installed at required intervals in the longitudinal direction of the water channel frame that guides the entire water flow and provided to block the water flow in multiple stages, each having a channel hole on the side near the bottom of the water channel frame A partition gate for generating a washout flow of a strong flow flowing so as to connect between the channel holes near the bottom of the water channel frame;
A movable aeration apparatus including a porous concrete molded body that is disposed between each partition gate and periodically displaces a part or all of it into a state of being immersed in water and a state of being exposed to the air. Water purification waterway device.   The water purification water channel device according to claim 1, wherein the porous concrete molded body is composed of a rotating body that rotates around a support shaft in a state in which at least a part is submerged in water.   The water purification water channel apparatus according to claim 2, wherein the movable aeration apparatus includes a rotating body that rotates about an axis orthogonal to the flow of water.   The water purification water channel device according to claim 2, wherein the movable aeration apparatus includes a rotating body that rotates about an axis parallel to the flow of water.   The water purification water channel apparatus according to claim 4, wherein the rotating body is formed in a continuous spiral around an axis parallel to the flow of water.   The water purification water channel device according to claim 3 or 4, wherein the rotating body is provided with a blade body. The water purification water channel device according to any one of claims 2 to 5, wherein the rotating body is formed of a disk body and is provided with several or many through holes penetrating in a thickness direction thereof.   The water purification waterway device according to any one of claims 1 to 7, wherein the porous concrete molded body is composed of a blade block protruding in a radial direction from a support shaft that is rotatably provided.   The water purification water channel apparatus according to any one of claims 1 to 8, wherein the flow path hole is disposed at a misalignment position with respect to a water flow direction.

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