JP2019093325A - Water sprinkler in trickling filter - Google Patents

Abstract

To provide a water sprinkler for uniformly sprinkling water to a filter bed in a trickling filter.SOLUTION: A water sprinkler is composed of a sewage supply pipe 11 disposed above a reaction tank 20 of a trickling filter 1, branch pipes 12, 13 provided above the sewage supply pipe and connected to the sewage supply pipe, a distributor 14 provided above the branch pipes, and a nozzle provided in the distributor. At least one of a distributor body of the distributor or a lid provided on the top of the distributor body is made of a transparent material, and a height-adjustable end nozzle is provided at the tip of the nozzle.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a water sprinkling apparatus in a sewage purification apparatus for purifying sewage such as industrial wastewater, upper and lower water, and river water, and more specifically, a water sprinkling filter in which filter medium lumps (microorganism holding carrier) are deposited in a laminated manner in a reaction tank. The present invention relates to a water sprinkling apparatus in a water sprinkling type filter bed apparatus in which microorganisms are attached on a floor, filth water is sprinkled from above the water sprinkling filter floor, and treated water that has permeated down is taken out of the tank.

Sprinkler-type filter beds have long been used as one of the methods for purifying sewage. A general water sprinkling filter bed apparatus is composed of a reaction tank and a water sprinkling apparatus provided in the upper part of the reaction tank, and the inside of the reaction tank is filled with a microorganism holding carrier to which the microorganisms contained in the sewage are attached. A sprinkling filter bed is formed of the aggregate of the microorganism supporting carrier.
Such a water filter bed apparatus has the advantages of low power consumption, easy operation management, and low sludge generation.
On the other hand, it is essential to spread the sewage uniformly over a sprinkled filter bed of the reaction tank over a wide area.

As a technique for spreading the filth water uniformly over a water sprinkling filter floor, there are a water sprinkling method and a nozzle method.
In the water sprinkling method, a ditch (a downflowing ditch) provided with a discharge ditch is disposed above the water sprinkling filter bed, and sewage is allowed to flow down naturally from the ditch and sprinkling.
Moreover, a nozzle system arranges the pipe which provided the nozzle which spouts the sewage which was disperse | distributed by the piping member which consists of a cylindrical pipe etc. in the upper part of a water filtration filter bed, and it is a system which waters a sewage from this nozzle.
And, in any of the above-mentioned water spray system and the nozzle system, the fixed system which arranges the member (soot and piping member) which sprinkles the sewage in the fixed position of the reaction tank upper part, the member which sprays the wastewater (soil and piping member) There is a self-propelled system that makes the self-propelled in the upper part of the reaction tank, and a rotation system in which a member (water pipe or piping member) for sprinkling dirty water is attached to the rotating member and the pipe or the pipe member is rotated in the upper part .
In the self-propelled system, a fixed frame is provided movably at the upper part of the reaction tank, and a pipe comprising a pipe provided with a discharge weir provided at a fixed position of the fixed frame or a cylindrical pipe provided with a nozzle for dispersing and spouting sewage A member or the like for sprinkling dirty water is attached, the fixed frame is moved on the reaction tank, and the dirty water is sprayed on the upper portion of the reaction tank from a weir attached to the fixed frame or a nozzle provided on a piping member.
On the other hand, in the rotation method, a rotary shaft is rotatably provided at the upper part of the reaction tank, a member for sprinkling sewage is attached to a fixed position on the rotary shaft, the rotary shaft is rotated on the reaction tank, It consists of a structure which sprinkles sewage on the reaction tank upper part from the nozzle provided in the member which sprinkles the attached sewage.

JP, 2015-188871, A

However, in the sprinkling method, sewage water is allowed to flow down naturally from the end of the weir provided with the weir, and since we are susceptible to blockage due to the adhesion of sediments and biofilms in the weir, the obstruction is eliminated. It was necessary to perform maintenance such as regular cleaning work. Furthermore, due to variations in the flow rates of the respective discharge weirs due to blockages in the flow path of the weirs and the weirs, it was difficult to achieve uniform distribution of the sewage.
Moreover, in the nozzle system, when the nozzle is provided downward in the piping member, the air contained in the sewage moves upward and an air pool is generated, so that uniform dispersion of the sewage is difficult.
And, in either case of the water spray system and the nozzle system, when adopting the self-running system and the rotation system, a power source may be required, and not only the structure becomes complicated but also the running cost and the movable part Maintenance is required.
Furthermore, in the case of the rotation method, the cross-sectional shape of the reaction vessel is preferably circular, but considering the installation place of the purification device, it is suitable to make the cross-sectional shape of the reaction vessel rectangular instead of circular. Problem, and there was also a problem that the water can not be sprayed efficiently.

The present inventors solved the above-mentioned subject by the following means.
(1) Sewage water supply pipe disposed above the reaction tank of the sprinkling type filter bed apparatus, a branch pipe provided above the sewage water supply pipe and connected to the sewage water supply pipe, and the branch pipe Water sprinkling apparatus in sprinkling type filter bed apparatus, characterized by comprising a distributor provided above.
(2) The distributor includes a cylindrical distributor body, a water pipe provided at the bottom of the distributor body, a lid provided at the top of the distributor body, and a hole provided in the distributor body The water sprinkling apparatus in the water spouting type filter bed device according to the above (1), which comprises a nozzle inserted from the branched pipe insertion hole and provided in the distributor main body.
(3) At least one of the distributor body (14a) of the distributor (14) or the lid (14c) provided on the top of the distributor body (14a) is made of a transparent material. The water sprinkling device in the water spouting filter bed device according to the above (1) or (2).
(4) The nozzle according to any one of (1) to (3), characterized in that the nozzle comprises a nozzle body and a tip nozzle provided at the tip of the nozzle body so as to be adjustable in height. Water sprinkling device in water spouting filter bed device as described.

The sewage supply pipe disposed above the reaction tank of the sprinkling filter bed device, the branch pipe provided above the sewage supply pipe and connected to the sewage supply pipe, and further above the branch pipe Since the sewage and the flow of air bubbles contained in the sewage are always horizontal or upward, and the terminal nozzle for sprinkling the sewage is disposed upward at the highest position, since it comprises the provided distributor. Air bubbles contained in the waste water are smoothly discharged together with the waste water, air does not build up in the pipe, and uniform distribution becomes easy.
Further, according to the water sprinkler of the present invention, since the height of the end nozzles for sprinkling sewage can be adjusted, the heights of the upper ends of the nozzles can be easily made uniform, and the nozzle height positions are irregular. It is possible to prevent the deviation of the amount of watering that occurs, and to easily equalize the flow rate of the sewage watered from each nozzle.
Furthermore, in the water sprinkler according to the present invention, at least one of the distributor main body and the lid provided on the upper part of the distributor main body can be made of a transparent material, so that the flow can be visually observed from the outside. The flow rate can be measured reliably.
Then, if the flow rate is temporarily increased (flushing), the passage flow velocity of the end nozzle can be increased, so clogging of the nozzles can be easily prevented, and variation in the flow rate of each nozzle of dirty water due to sludge clogging And uniform distribution from each nozzle.
Then, the cross-sectional shape of the reaction tank can be either rectangular or circular, so that the sewage can be sprayed efficiently.
Moreover, since the water sprinkler system according to the present invention does not require a power source for water spray, the cost for facility maintenance can be reduced.

It is a schematic diagram of the water spouting type filter bed device of the embodiment of the present invention. It is a top view of the water sprinkler of the embodiment of the present invention. It is a schematic diagram of a distributor. It is sectional drawing of a nozzle. It is an example of use of a water spouting filter bed device of an embodiment of the present invention. It is a top view of the device main part of the water spout type filter bed device of an embodiment of the present invention. It is a schematic diagram of the water type filter bed apparatus of the other example of embodiment of this invention.

EMBODIMENT OF THE INVENTION The form for implementing the sprinkler system in the sprinkler type filter bed apparatus of this invention is demonstrated based on the figure of an Example.
1 is a schematic view of a water sprinkling filter bed apparatus according to an embodiment of the present invention, FIG. 2 is a top view of a water sprinkling apparatus according to an embodiment of the present invention, FIG. 3 is a schematic view of a distributor, and FIG. is there.
In the figure, 1 is a sprinkling type filter bed device, 10 is a sprinkling device, 11 is a sewage supply pipe, 12 is a first branch pipe, 13 is a second branch pipe, and 14 is a distributor.
14a is a distributor main body, 14b is a water distribution pipe, 14c is a lid, 14d is a branch pipe insertion hole, 15 is a nozzle, 15a is a nozzle main body, 15b is an end nozzle, 20 is a reaction tank, 21 is a reaction tank It is a lid.
As shown in FIG. 1, the water sprinkling filter bed device 1 includes a water sprinkling device 10 and a reaction tank 20.
The water sprinkler system 10 according to the present invention has one end connected to a sewage treatment apparatus (not shown), and the sewage water supply pipe 11 for sending the sewage discharged from the sewage treatment plant to the water sprinkler 10 and one end connected to the sewage water supply pipe 11 The second branch pipe 13 connected to the first branch pipe 12, the second branch pipe 13 connected to the first branch pipe 12, and the distributor 14 connected to the other end of the second branch pipe 13.
In the embodiment of the present invention, the dirty water supply pipe 11, the first branch pipe 12, the second branch pipe 13, and the distributor 14 are connected, and from the dirty water supply pipe 11 to the first branch pipe 12 and the second branch. Sewage is sent to the distributor 14 through the pipe 13, but depending on the form of the water filter type floor apparatus 1, the sewage is sent from the sewage supply pipe 11 to the distributor 14 through the first branch pipe 12 or the sewage Distribution pipe and any one of the sewage supply pipe 11 and the first branch pipe 12 or the second branch pipe 13 so as to send sewage from the supply pipe 11 to the distributor 14 through the second branch pipe thirteenth It may be configured with the vessel 14, and if it is configured as a large scale device, it is also possible to further add a branch pipe.

Then, the waste water sprinkled by the water sprinkling device 10 is distributed over the entire spread of the plane of the reaction tank 20 disposed in the lower part through the water distribution pipes 14 b provided in the lower part of the plurality of distributors 14, that is, Water is evenly sprayed to a filter bed made of the microorganism holding carrier 24 packed in the reaction tank 20.
The sewage watered evenly from the water distribution pipe 14b of the distributor 14 is purified through the microorganism holding carrier 24, and the purified treated water is passed from the reaction tank 20 through the water distribution pipe (not shown) provided below. Exhausted.

In a sprinkler system 10 according to the present invention, a sewage supply pipe 11, a first branch pipe 12 whose one end is connected to the sewage supply pipe, a second branch pipe 13 connected to the first branch pipe 12, the second branch The height relationship at the arrangement position of the nozzle 15 provided in the distributor 14 connected to the other end of the pipe is such that the first branch pipe 12 is arranged above the dirty water supply pipe 11 and the first branch pipe 12 The second branch pipe 13 is disposed above the second branch pipe 13, and the nozzle 15 provided in the distributor 14 is disposed above the second branch pipe 13.
Thus, from the dirty water supply pipe 11 to the nozzle 15 provided in the distributor 14, the dirty water supply pipe 11, the first branch pipe 12, the second branch pipe 13, and the nozzle 15 provided in the distributor 14 in this order By arranging above, the sewage supplied from the sewage treatment apparatus (not shown) and the air bubbles contained in the sewage are always horizontal in the piping (the sewage supply pipe 11, the first branch pipe 12, the second branch pipe 13). Or it can flow in the upward direction.
Then, by providing the end nozzle 15b of the nozzle 15 provided in the distributor 14 upward at the highest position among the pipes as described later, an air reservoir can be generated on the way from the dirty water supply pipe 11 to the distributor 14 Since the air bubbles contained in the waste water are discharged smoothly together with the waste water from the end nozzle 15b without the occurrence of the flow, the flow does not fluctuate and the uniform dispersion becomes easy without the flow fluctuation.

  In the present embodiment, for example, a circular pipe made of steel is used as the dirty water supply pipe 11. However, the present invention is not limited to this, and the dirty water is fed from the waste water treatment apparatus to the sprinkler type filter apparatus 1. It may be a tube or the like.

As shown in FIG. 3, the distributor 14 constituting the water sprinkler 10 in the present embodiment has a cylindrical main body 14a, a water distribution pipe 14b provided at the bottom, a lid 14c provided at the top, and holes in the main body 14a. It is comprised from the branch pipe insertion hole 14d provided.
The distributor 14 is for sprinkling dirty water into the reaction tank 20 and is formed of a durable material, but in the present invention, the distributor 14 is provided particularly on the distributor body 14a or on the upper part of the distributor body 14a. Preferably, at least one of the lids 14c is made of a synthetic resin such as transparent polyvinyl chloride (PVC).
The nozzle 15 disposed in the distributor 14 discharges the sewage flowing from the branch pipes 12 and 13. As shown in FIG. 4, the nozzle main body 15a and the tip end of the main body 15a are disposed. It is constituted by the end nozzle 15 b provided so as to be adjustable in height, and the other end is connected to the second branch pipe 13.
In the present embodiment, it comprises an internal thread provided on the inner periphery of the tip of the nozzle body 15a and an external thread provided on the outer periphery of the end nozzle 15b, and the external thread is engaged with the internal thread. The height of the end nozzle 15b can be adjusted.
As described above, by configuring the injection point height of the end nozzle 15b that discharges the sewage upward, it is possible to adjust the piping (the sewage supply pipe 11, the first branch pipe 12, and the like in long-term use of the water sprayer 10). Even if the variation in the flow rate of each nozzle 15 occurs due to adhesion of microbial slime in second branch pipe 13), etc., the flow rate of each nozzle 15 is adjusted by adjusting the injection point height of each nozzle 15. Can be suppressed.

When at least one of the dispenser body 14a of the dispenser 14 or the lid 14c provided on the top of the dispenser body is made of a transparent material, it is jetted from the end nozzle 15b as shown in FIG. 3A. When the waste water collides with the lid 14c, it is possible to confirm the spouting flow rate by the spread of the water film (m) attached to the lid 14c.
Further, as shown in FIG. 3 (B), even in the case of the height at which the waste water spouted is not applied to the lid 14c, the waste water spouted by looking in from the side of the distributor body 14a or from the top of the lid 14c. By looking at the height (h), it is possible to confirm the amount of sewage spouted, and adjusting the height of the end nozzles 15b for distributing water evenly from the distributors 14 to the filter floor surface of the reaction tank 20 or by using an electric motor. Adjustment by the valve 16 can be facilitated.

Another embodiment of the use of a water filter system using a water spray device according to the present invention is shown in FIGS. 5 and 6.
The water sprinkling device 10 according to the present invention includes, as described above, the sewage water supply pipe 11 for sending the sewage discharged from the sewage treatment apparatus to the water sprinkling device 10, and the first branch pipe 12 whose one end is connected to the sewage water pipe 11; It comprises a second branch pipe 13 connected to the first branch pipe 12 and a distributor 14 connected to the other end of the second branch pipe 13. Here, for example, the water spray apparatus 10 is configured to have a square or rectangular outer shape in top view. Then, the size in the top view is 1 × 1 m in length × width, and four distributors 14 are provided to form 1 unit a.
In this way, by configuring one water sprinkler 10 to be minimized, a plurality of the water sprinklers 10 can be combined according to the size of the sewage treatment facility and the size and shape of the water sprinkling filter bed device. It can be configured.
For example, in the embodiment shown in FIG. 6, one water dispenser 10 of 1 unit a, in which four distributors 14 are arranged, is a total of 4 in total of 2 in length and 2 in width, making one set A, 4 pairs in length, width By arranging two sets in, the water spray apparatus 10 is arranged eight units vertically and four units horizontally.
The unit a of each water sprinkling device 10 is connected to the dirty water supply pipe 11 for sending the sewage discharged from the sewage treatment device to the water sprinkling device 10 through the first branch pipe 12 and the second branch pipe 13 and the distributor 14 is connected And make up the whole.
Also in the embodiment of the present invention, the dirty water supply pipe 11, the first branch pipe 12, the second branch pipe 13, and the distributor 14 are connected, and from the dirty water supply pipe 11 to the first branch pipe 12 and the second branch. Sewage water is sent to the distributor 14 through the pipe 13, but when used alone or in a small-scale facility, either the first branch pipe 12 or the second branch pipe 13 may be used, The branch pipe and the sewage supply pipe 11 may be connected.
Further, even when the plurality of water sprayers 10 are arranged, the dirty water supply pipe 11, the first branch pipe 12 connected to the dirty water supply pipe 11 at one end, and the second branch connected to the branch pipe 12 The height relationship seen from the front of the drawing of the pipe 13 and the nozzle 15 provided in the distributor 14 connected to the other end of the second branch pipe is the same as that described above. A first branch pipe 12 is disposed, a second branch pipe 13 is disposed above the first branch pipe 12, and a nozzle 15 provided in the distributor 14 is disposed above the second branch pipe 13.
By maintaining this positional relationship, the air bubbles contained in the waste water stored above the piping are discharged horizontally or upward with the flow of the waste water, so they are discharged smoothly without forming an air pool, and therefore the waste water is It is uniformly dispersed and sent to the reaction tank 20.

In addition, when the water sprinkling type filter bed apparatus 1 is comprised by arrange | positioning the some water sprinkler apparatus 10 like FIG.5 and FIG.6, it is also preferable to provide the solenoid valve 16 in the 1st branch pipe 12. FIG. Accordingly, by opening and closing the respective solenoid valves 16 in accordance with the amount of waste water to be treated, the usage efficiency of the water filter type floor apparatus 1 can be achieved.
Further, when the nozzle 15 of a specific water sprinkling apparatus 10 is clogged with sludge etc, the distribution is performed by closing the solenoid valve 16 provided on the first branch pipe 12 which sends the dirty water to the distributor 14 of the water sprinkling apparatus 10. The pressure of the sewage sprayed from the nozzle 15 provided in the vessel 14 can be increased, and the pressure can eliminate the clogging of the nozzle. Furthermore, the variation in the flow rate of each nozzle due to the clogging of the sludge can be suppressed, and uniform distribution from each nozzle can be performed.

The embodiment of the water sprinkling apparatus in the water sprinkling filter bed apparatus of the present invention is not limited to the configuration in which the sewage is directly sent to the reaction tank 20 from the water sprinkling apparatus 10 as in the water sprinkling filter bed apparatus 1 shown in FIG. It is also possible to receive the waste water discharged from the water sprinkler 10 by a receiver and to equally sprinkle water therefrom.
FIG. 7 is a schematic view of a water sprinkling filter apparatus according to another embodiment of the present invention, wherein 21 is a lid of a reaction tank, 22 is a bowl-shaped sewage receiver with an open upper surface, and 23 is a water receiver. The sewage water supply pipe connected to the discharge port 22a provided in the container 22 is a water spray pipe provided in the sewage water supply pipe.
In the sprinkling type filter bed apparatus 1 'shown in FIG. 7, the waste water evenly sprayed from the water distribution pipe 14b of the distributor 14 flows to the waste water receiver 22 provided in the reaction tank 20, and flows to the receiver 22. Treated water in which water is evenly sprayed from the water supply pipe 23a of the dirty water supply pipe connected to the provided outlet 22a to the microorganism holding carrier 24 filled in the reaction tank 20, and the microorganisms etc. are eliminated through the microorganism holding carrier 24 Is discharged from the reaction tank 20 through a water distribution pipe (not shown) provided at the bottom.

When the water sprinkler apparatus 10 according to the embodiment of the present invention provided in the water sprinkler type filter bed apparatus 1 'configured as described above is configured as the embodiment of FIG.
First, the waste water supplied from the waste water treatment apparatus (not shown) to the waste water supply pipe 11 is sent to the second branch pipe 13 through the first branch pipe 12 in the state where the electromagnetic valve 16 is open and provided to the distributor 14. It jets from the end nozzle 15b of the nozzle 15 which has been set.
Then, a pot-shaped filthy water whose upper surface provided in the reaction tank 20 is opened from a water distribution pipe 14b provided between the inner wall of the distribution device 14 and the nozzle 15 and at the bottom in the distribution device 14 Water is sprayed evenly to the receiver 22.
Thereafter, the sewage watered to the sewage receiver 22 passes through the sewage water supply pipe 23 connected to the outlet 22a provided in the sewage receiver 22, and the water discharge pipes provided in plural branches are provided to the sewage water supply pipe. Water is sprayed more evenly from the water pipe 23a to the microorganism holding carrier 24 filled in the reaction tank 20 with the multiple watering pipes 23a rather than watering with one water distribution pipe 14b, and the microorganisms holding carrier 24 excludes microorganisms etc. The treated water is discharged from the reaction tank 20 through a water distribution pipe (not shown) provided below.

DESCRIPTION OF SYMBOLS 1 Sprinkler type filter bed apparatus 10 Sprinkler system 11 Sewage supply pipe 12 1st branch pipe 13 2nd branch pipe 14 Divider 14a Main body 14b Water distribution pipe 14c Distribution pipe 14c Lid 14d Branch pipe insertion hole 15 Nozzle 15a Nozzle main body 15b End nozzle 20 Reaction tank 21 Lid 22 Sewage receiver 23 Sewage water supply pipe 24 Microorganism holding carrier

Claims (4)

  The sewage supply pipe (11) disposed in the upper portion of the reaction tank (20) of the water spout type filter bed apparatus (1), and provided above the sewage supply pipe (11), and the sewage supply pipe (11) And a distributor (14) provided above the branch pipe (12, 13). .   The distributor (14) is provided at a cylindrical distributor body (14a), a water distribution pipe (14b) provided at the bottom of the distributor body (14a), and an upper portion of the distributor body (14a) And a nozzle (15) provided in the distributor body (14a) and inserted from a branched pipe insertion hole (14d) provided in the distributor body (14a). The water sprinkling apparatus in the water spouting filter bed apparatus according to claim 1, characterized in that   The device according to claim 1, characterized in that at least one of the distributor body (14a) of the distributor (14) or the lid (14c) provided on top of the distributor body (14a) is made of a transparent material. Water sprinkling device in sprinkling type filter bed device according to 1 or 2. The nozzle (15) is characterized by comprising a nozzle body (15a) and a tip nozzle (15b) provided at the tip of the nozzle body (15a) so as to be adjustable in height. Water sprinkling apparatus in sprinkling type filter bed apparatus given in any 1 of 3.

Images