KR102329292B1 - Apparatus for dispersing Back-washing water - Google Patents

Abstract

The present invention relates to an apparatus for dispersing back-washing water, which comprises: a lower surface part having a washing water inlet hole through which washing water flows; an upper surface part spaced apart from the lower surface part and having a dispersion hole for dispersing the washing water to flow upward; a side surface part coupled to a side surface of the lower surface part and the upper surface part; and an induction pipe passing through the lower surface part and the upper surface part and flowing the contaminated water flowing in from the lower surface part to an upper side of the upper surface part, wherein the contaminated water flows in from the lower surface part, passes through the induction pipe, and then moves to the upper side of the upper surface part, and the washing water flows into the washing water inlet hole, spreads between the lower surface part and the upper surface part, and is dispersed and discharged to the upper side of the upper surface part through the dispersion hole. The present invention improves back-washing efficiency, reduces costs, and is easy to install and maintain by evenly dispersing and discharging washing water toward a filter member.

Description

Back-washing water dispersing device {Apparatus for dispersing Back-washing water}

The present invention relates to a backwash water dispersing device, and particularly, when backwashing a filter unit housing a filter member, the washing water is evenly distributed toward the filter member and discharged to improve backwashing efficiency and reduce costs, It relates to a backwash water dispersing device that is easy to install and maintain.

Various pollutants remaining on the surface of the earth are washed away with rainwater during rain. The pollutants include various pollutants piled up on roads, sidewalks, bridges, land surfaces, and the like, and include, for example, household waste and tire dust. When these pollutants are washed in rainwater and directly introduced into rivers, serious water pollution is caused. Therefore, it is required to treat the initial rainwater according to predetermined standards.

1 is a diagram schematically illustrating a conventional backwashing method. 1, the initial rainwater flows into the inlet 7, and the pollutants contained in the initial rainwater are caught by the filter medium (filter member) and then discharged to the outside through the outlet 6, the filter medium Contaminants removed by adsorption are removed and washed by backwashing.

As shown in FIG. 1, while the washing water is injected into the lower side of the filter member, the contaminants adsorbed on the filter member are separated. As shown in FIG. 1 , the washing water is configured to spray the washing water upward through the jet nozzle 71 provided at the lower part of the filtration tank 3 . The conventional method using the injection nozzle 71 has disadvantages in that a plurality of injection nozzles 71 must be individually installed and cumbersome in terms of maintenance.

On the other hand, in the conventional backwashing method, when washing water is introduced to separate contaminants trapped in the filter member, the washing water contains a large amount of contaminants, and when washing is completed, the washing water is drained from the filtration tank drain provided at the bottom of the filtration tank 3 . (74) to discharge. Rainwater remaining in the pretreatment tank is drained through the pretreatment tank drain 73 , and rainwater remaining in the treatment tank 4 is drained through the treatment tank drain 75 after the end of the rain or backwashing.

However, according to the backwashing method according to this process, when the washing water containing the contaminants dropped from the filter member flows out to the filtration tank drain 74 at the bottom, the contaminants move downward together with the washing water again. There is a problem in that a part is caught again by the filter member and is stenciled. As a result, in the conventional backwashing method, there is a problem in that the contaminants separated by backwashing remain in the filtration tank 3 or are re-adsorbed to the filter member.

The present invention has been devised in response to the above needs, and when backwashing the filter unit accommodating the filter member, the washing water is evenly distributed toward the filter member and discharged to improve backwashing efficiency and reduce costs, An object of the present invention is to provide a backwash water dispersing device that is easy to install and maintain.

According to an embodiment of the present invention, a backwash water dispersing device includes: a lower surface having a washing water inlet hole through which washing water flows; an upper surface part spaced apart from the lower surface part and having a dispersion hole for dispersing the washing water to flow upward; a side portion coupled to a side surface of the lower surface portion and the upper surface portion; and an induction pipe that passes through the lower surface and the upper surface and flows the contaminated water flowing in from the lower surface to the upper side of the upper surface. Including, the contaminated water flows in from the lower surface and passes through the guide pipe It moves to the upper side of the upper surface part, and the washing water flows into the washing water inlet hole, spreads between the lower surface part and the upper surface part, and is dispersed and discharged to the upper side of the upper surface part through the dispersion hole.

In addition, it is preferable that an air inlet hole for injecting cleaning air is formed on the lower surface of the lower surface portion.

In addition, it is preferable that a coupling protrusion protruding upward is formed on the edge of the lower surface portion, and a coupling hole into which the coupling protrusion is inserted is formed at the edge of the upper surface portion.

In addition, it is preferable that a plurality of guide tubes are provided, integrally formed on the lower surface portion, and a fitting hole through which the upper end of each guide tube is fitted is provided on the upper surface portion.

In addition, the lower surface portion, the upper surface portion, and the side portion is made in the form of a rectangular parallelepiped, it is preferable that the rectangular parallelepiped forms a bottom surface of the filtration unit for accommodating the filter member for non-point pollution source filtration.

In addition, one side of the rectangular parallelepiped is rotatably coupled to the filtering unit, so that when the rectangular parallelepiped rotates, the lower side of the filtering unit is opened to clean and manage the bottom of the filtering tank accommodating the filtering unit.

The backwashing water dispersing device according to the present invention improves backwashing efficiency and reduces costs by distributing the washing water evenly toward the filter member when backwashing the filter unit accommodating the filter member. It provides the effect of easy maintenance.

1 is a view schematically showing a conventional backwashing method;
2 is a perspective view of a backwash water dispersing device according to an embodiment of the present invention;
Figure 3 is an exploded perspective view of Figure 2;
4 is a plan view of a state in which the backwash water dispersing device is installed in the non-point pollution source treatment device;
5 is a flowchart of a backwash method;
6 is a view showing the state of the non-point pollution source treatment device after the end of the rain;
7 is a view showing a state in which the pre-treatment tank and the filtration tank are drained before performing backwashing;
8 is a view showing a state in which backwashing is performed;
9 is a view showing a state in which the backwash water of the filtration tank and the filtered water of the treatment tank are drained.

Hereinafter, various embodiments of the present invention will be described in connection with the accompanying drawings. Various embodiments of the present invention can be made various changes and can have various embodiments, specific embodiments are illustrated in the drawings and the related detailed description is described. However, this is not intended to limit the various embodiments of the present invention to specific embodiments, and should be understood to include all changes and/or equivalents or substitutes included in the spirit and scope of various embodiments of the present invention. In connection with the description of the drawings, like reference numerals have been used for like components.

Expressions such as “comprises” or “may include” that may be used in various embodiments of the present invention indicate the existence of a corresponding disclosed function, operation, or component, and may include one or more additional functions, operations, or components, etc. are not limited. In addition, in various embodiments of the present invention, terms such as “comprise” or “have” are intended to designate that a feature, number, step, operation, component, part, or combination thereof described in the specification is present, It should be understood that it does not preclude the possibility of addition or existence of one or more other features or numbers, steps, operations, components, parts, or combinations thereof.

When a component is referred to as being “connected” to another component, the component may be directly connected to the other component, but a new component is formed between the component and the other component. It should be understood that there may be

Terms used in various embodiments of the present invention are only used to describe a specific embodiment, and are not intended to limit various embodiments of the present invention. The singular expression includes the plural expression unless the context clearly dictates otherwise.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by those of ordinary skill in the art to which various embodiments of the present invention pertain.

Terms such as those defined in a commonly used dictionary should be interpreted as having a meaning consistent with the meaning in the context of the related art, and unless explicitly defined in various embodiments of the present invention, ideal or excessively formal terms not interpreted as meaning

Hereinafter, preferred embodiments according to the present invention will be described in detail with reference to the accompanying drawings.

2 is a perspective view of a backwash water dispersing device according to an embodiment of the present invention, and FIG. 3 is an exploded perspective view of FIG. 4 is a plan view of a state in which the backwash water dispersing device is installed in the non-point pollution source treatment device, and FIG. 5 is a flowchart of the backwashing method. 6 is a view showing the state of the non-point pollution source treatment apparatus after the end of rain, and FIG. 7 is a view showing the state in which the pre-treatment tank and the filtration tank are drained before backwashing is performed. FIG. 8 is a view showing a state in which backwashing is performed, and FIG. 9 is a view showing a state in which the backwashing water of the filtration tank and the filtered water of the treatment water tank are drained.

First, in the present invention, in the non-point pollution source treatment device (1) for filtering polluted water generated from the non-point pollution source, the filtering unit (9) for accommodating the filter member (8) for filtering the pollutants contained in the contaminated water is provided. It relates to a backwash water dispersing device used for backwashing, and in another aspect it relates to a backwashing method for backwashing the filter unit (9).

In general, sources of polluted water are divided into point sources and non-point sources. A point source is defined as a case where the outlet of polluted water is specified in a certain place, and a non-point source is defined as a case where the outlet of polluted water is not constant. Point sources include sewage treatment plants, livestock livestock, manure, wastewater, domestic wastewater, industrial plant wastewater treatment plants, and leachate. and plant residues and air pollutants that have fallen to the ground.

Non-point pollution sources are washed together with rainwater and flow directly into rivers during rain, which is a representative cause of water pollution. Therefore, it is required to treat the initial rainwater according to a predetermined standard. Non-point pollutants are discharged through drainage channels together with rainwater, and since the initial rainwater contains a large amount of pollutants, purification work is very important in the initial rainwater.

As shown in FIG. 6, the non-point source treatment apparatus 1 removes the pollutants contained in the contaminated water through the pretreatment tank 2 provided with an inlet 7 through which rainwater flows, and the pretreatment tank 2 It includes a filtration tank 3 for filtering, and a treatment water tank 4 disposed at the rear end of the filtering tank 3 and provided with an outlet 6 for discharging the treated water. An inlet tank 5 into which contaminated water passing through the pretreatment tank 2 flows may be provided at the front end of the filtration tank 3 , and the contaminated water flows into the filtering tank 3 from the lower portion of the inlet tank 5 . It overflows the filtration tank (3) and is discharged after moving to the treatment water tank (4).

A filter member 8 for filtering the pollutants contained in the polluted water is provided in the filtration tank 3 . The filter member 8 is accommodated in the filtration unit 9 provided in the filtration tank 3 . The filter member 8 is a particulate member that absorbs the pollutants and removes the pollutants from the polluted water. Contaminants adsorbed to the filter member 8 may be removed and washed by backwashing. The present invention provides a backwash water dispersing device used for backwashing the filter unit (9) accommodating the filter member (8), and contaminants removed from the filter member (8) remain in the filter unit (9). It relates to a backwashing method that allows discharge without being washed.

2 and 3, in the backwash water dispersing device according to the embodiment of the present invention, the contaminated water flowing in from the lower part of the filter unit 9 is passed as it is, and the washing water is dispersed upwardly. As such, it specifically includes a lower surface portion 10 , an upper surface portion 20 , a side portion 30 , and an induction tube 13 .

The lower surface portion 10 is a flat plate-shaped member, and the washing water inlet hole 11 through which the washing water is introduced and the air inlet hole 12 through which the air is injected are formed. The washing water is injected for water washing, and the air is injected for air washing. At an edge of the lower surface portion 10 , a coupling protrusion 14 protruding upward for coupling with the upper surface portion 20 is formed.

The upper surface portion 20 is disposed to be spaced apart from the upper side of the lower surface portion 10 , and is coupled to the lower surface portion 10 . Dispersion holes 21 for dispersing washing water and air to flow upward are formed in the upper surface portion 20 . According to the present embodiment, a plurality of the dispersion holes 21 are provided. In addition, a coupling hole 23 into which the coupling protrusion 14 provided on the bottom 10 is inserted is formed in the upper surface portion 20 . The lower surface portion 10 and the upper surface portion 20 are easily coupled to each other by fitting.

The side portion 30 is a portion coupled to the edge side of the upper surface portion 20 and the lower surface portion 10 in a state where the upper surface portion 20 and the lower surface portion 10 are spaced apart from each other and coupled. When the upper surface portion 20 , the lower surface portion 10 , and the side portion 30 are coupled in this way, a predetermined space is formed between the upper surface portion 20 and the lower surface portion 10 . According to this embodiment, the lower surface portion 10, the upper surface portion 20, and the side portion 30 are coupled to each other to form a rectangular parallelepiped shape.

The guide pipe 13 is provided to flow the contaminated water flowing in from the lower surface portion 10 through the lower surface portion 10 and the upper surface portion 20 to the upper side of the upper surface portion 20 . . According to the present embodiment, the guide tube 13 is integrally formed with the lower surface portion 10 , and the guide tube 13 is formed to protrude upward from the lower surface portion 10 .

According to this embodiment, the guide tube 13 is provided in plurality, and the upper surface portion 20 is provided with a fitting hole 22 into which the upper end of each guide tube 13 is fitted. When the contaminated water flows into the lower surface portion 10, it can quickly flow upward by the guide tubes 13 provided in sufficient number. The guide pipe 13 serves to guide the contaminated water upward and to support the upper surface portion 20 and the lower surface portion 10 apart from each other.

Contaminated water containing pollutants by rainwater flows into the lower part of the filtration tank 3 , flows in from the lower surface 10 , passes through the guide pipe 13 , and then moves to the upper side of the upper surface 20 . and the washing water is introduced into the washing water inlet hole 11, spreads between the lower surface part 10 and the upper surface part 20, and is dispersed and discharged to the upper side of the upper surface part 20 through the dispersion hole 21 do.

In addition, in the backwash water dispersing device according to the present invention, an air injection pipe for injecting air is connected to the air inlet hole 12, so that cleaning by air can be performed. Of course, the energy is injected together with the injection of the washing water, so that the air washing can be performed simultaneously with the water washing.

In this way, the guide pipe 13 guides the contaminated water flowing in from the lower surface portion 10 to the filter member 8 accommodated in the upper side of the upper surface portion 20 while rapidly flowing upwards to the contaminated water. Ensure that the contaminants contained are filtered out. Accordingly, the contaminated water does not flow in the space between the upper surface part 20 and the lower surface part 10 , but passes through the lower surface part 10 and the upper surface part 20 .

On the other hand, the washing water and air are respectively introduced into the washing water inlet hole 11 and the air inlet hole 12 of the lower surface portion 10 via the washing water inlet pipe 40 and the air inlet pipe 50, respectively. do. The washing water and air introduced into the washing water inlet hole 11 and the air inlet 12 are introduced into the space between the upper surface part 20 and the lower surface part 10, and the dispersion hole of the upper surface part 20 It rises as it is dispersed upward through (21) and discharged. The dispersion holes 21 are formed over the entire area of the upper surface portion 20 , and each dispersion hole 21 performs a function similar to that of the injection nozzle 71 . Therefore, since the plate-shaped upper surface portion 20 performs the functions of the plurality of injection nozzles 71, the efficiency of backwashing is dramatically improved by the washing water and air that are dispersed upward from the entire area of the upper surface portion 20 and rise. is improved with

As described above, the lower surface portion 10, the upper surface portion 20, and the side portion 30 are formed in a rectangular parallelepiped shape, and the rectangular parallelepiped is a filtering unit 9 for accommodating the filter member 8 for non-point source filtration. form the bottom surface. That is, the filter member 8 for filtration is filled to the upper side of the rectangular parallelepiped.

According to this embodiment, the dispersing device of the rectangular parallelepiped consisting of the lower surface portion 10 , the upper surface portion 20 , and the side surface portion 30 is rotatably coupled to the filter portion 9 . When the rectangular parallelepiped rotates, the lower side of the filtration unit 9 is opened, and the bottom of the filtration tub 3 can be accessed, so that the bottom of the filtration tub 3 can be cleaned and managed.

Specifically, as shown in FIG. 4 , the backwash water dispersing device according to the embodiment of the present invention is formed in a rectangular parallelepiped shape, and a pair is installed facing each other at the lower end of the filter unit 9, the backwash water dispersing device One side of the installation frame installed in the lower center of the filtering unit (9) is seated, the other side is installed rotatably on the edge of the filtering unit (9). The backwash water dispersing device is installed in a structure that is lifted upward from the installation frame and rotated toward the edge of the filter unit 9 to open.

Accordingly, the backwashing water dispersing device may be rotated based on the edge of the filtering unit 9 so that the lower portion of the filtering unit 9 may be opened. When the lower portion of the filtration unit 9 is opened, the operator can easily access the bottom of the filtration tank 3 to perform cleaning and management.

Meanwhile, according to another aspect, there is provided a method of backwashing the filter unit 9 in which the filter member 8 for non-point source treatment is accommodated.

As shown in FIG. 5, the method for backwashing the filter unit 9 for treating non-point pollution sources according to an embodiment of the present invention includes a washing water injection step, a washing water continuation step, and a washing water discharge step.

First, when the rain ends, the non-point pollution source treatment device 1 maintains a state in which rainwater is filled in the state as shown in FIG. 6 . Rainwater from which pollutants have been removed by moving to the pretreatment tank 2, the filtration tank 3, and the treatment tank 4 is discharged through the outlet 6, and when the rain ends, the non-point pollution source treatment device 1 has The rainwater that could not be drained remains filled. In this state, for backwashing of the filtration unit 9 , all of the rainwater remaining in the pretreatment tank 2 , the inflow tank 5 , and the filtration tank 3 is discharged as shown in FIG. 7 . Rainwater remaining in the treatment water tank 4 is maintained in a state that is not discharged to be reused for backwashing.

The washing water injection step is a step of injecting washing water into the lower portion of the filter unit 9 provided in the filtration tank 3 and flowing it upward. The end of the washing water inlet pipe 40 is connected to the lower surface 10 of the backwashing water dispersing device to spray the washing water upward. As the washing water, rainwater remaining in the treatment water tank 4 may be used, or washing water may be provided from a separate water source.

The washing water continuation step is a step of injecting the washing water until the filter unit 9 is submerged. As shown in FIG. 8 , the washing water is continuously sprayed from the lower side to the upper side of the filter unit 9 to backwash the filter member 8 accommodated in the filter unit 9 .

The washing water discharging step is a step of discharging the washing water washing the filter member 8 through the outlet 61 provided in the filtration tank 3 in which the filter unit 9 is accommodated. The outlet 61 is provided at a position higher than the upper portion of the filter unit 9 . The washing water flows into the outlet 61 and is discharged along the washing water discharge pipe 60 . As the washing water is continuously introduced, the filter member 8 is backwashed, and the contaminants separated from the filter member 8 float in the washing water and flow upward. At this time, since the washing water is discharged through the outlet 61 provided at the upper side of the filter unit 9 , the floating contaminants are discharged and removed through the outlet at the upper side of the filter unit 9 .

According to the embodiment of the present invention, along with the washing with the washing water, air washing by injecting air into the lower part of the filter unit 9 may be performed. The air washing may be performed simultaneously with washing with the washing water. Of course, the air washing may be performed separately from washing with the washing water. For example, after first performing washing with the washing water, air washing may be performed subsequently.

According to an embodiment of the present invention, it includes the step of pumping and draining the residual water in the filtration tank 3 in which the filtration unit 9 is accommodated. The residual water pumping step is performed after the washing with the washing water and the air washing with the air are completed. In the residual water pumping step, a residual water discharge pipe (not shown) with one end extending to the bottom of the filtration tank 3 is installed, and the residual water is pumped to the upper side of the filtration tank 3 through the residual water discharge pipe and removed. is carried out

In addition, according to the present embodiment, backwashing of the filter unit 9 is performed in the washing water injection step and the sustaining step. During the backwashing process, washing water or air passes through the backwashing water dispersing device as described above, and the washing water And air is dispersed and discharged upwards to improve the efficiency of backwashing, and for dispersing the washing water and air, a rectangular parallelepiped backwashing water dispersing device is used to facilitate installation compared to the conventional installation of individual injection nozzles 71. and provide cost savings.

In addition, according to an embodiment of the present invention, the step of cleaning and managing the bottom of the filtration tank 3 by opening the lower side of the filtration unit 9 by rotating the backwash water dispersing device with respect to the filtration unit 9 . may further include.

According to this embodiment, a pair of the backwash water dispersing device is installed facing each other at the lower end of the filtering unit 9 , and one side of the backwashing water dispersing device is installed at the lower center of the filtering unit 9 . The frame is seated, and the other side is rotatably installed on the edge of the filtering unit 9 . The backwash water dispersing device is installed in a structure that is lifted upward from the installation frame and rotated toward the edge of the filter unit 9 to open.

Therefore, when the backwash water dispersing device is rotated with respect to the edge of the filter unit 9 , the lower portion of the filter unit 9 is opened, and the operator approaches the bottom of the filter tank 3 to perform cleaning and management. can be done By configuring the back detail dispersing device to be rotatable at the edge of the filtering unit 9 , it provides an effect that an operator can easily access the bottom of the filtering tank 3 .

As such, in the method of backwashing the filter unit 9 according to the embodiment of the present invention, the pollutants dropped from the filter member 8 are drained from the upper side of the filter unit 9 while flowing the washing water from the bottom to the top. By preventing contaminants from being trapped in the filter member 8 again, the effect of improving the cleaning efficiency of the filter member 8 is provided.

In addition, the backwashing method of the filter unit 9 according to the embodiment of the present invention may have the effect of the above-described backwashing water dispersing device as it is. For example, by effectively dispersing and flowing the washing water and air by the backwashing water dispersing device, the filter member 8 is effectively washed to improve backwashing efficiency, and the backwashing water dispersing device is provided with respect to the filter unit 9 Since the filtration unit 9 can be selectively opened by rotating, it provides an effect of facilitating access to the bottom of the filtration tub 3 and simplifying cleaning and management of the bottom of the filtration tub 3 .

In the above, the present invention has been described in detail with reference to preferred embodiments, but the present invention is not limited to the above embodiments, and various modifications may be provided without departing from the scope of the present invention.

1.... Non-point source pollutant treatment device 2.... Pre-treatment tank
3... Filtration tank 4... Treatment tank
5... Inlet tank 6... Outlet
7... Inlet 8... Filter element
9... Filtration part 10... Bottom part
11... Washing water inlet 12... Air inlet
13... Guide tube 14... Linkage
20... Upper part 21... Dispersion hole
22... Fitting hole 23... Joining hole
30... Side part 40... Washing water inlet pipe
50... Air inlet pipe 60... Washing water outlet pipe
61... Outlet 71... Spray nozzle
73... Pretreatment tank drain 74... Filter tank drain
75... Treatment water tank drain 100... Backwash water dispersing device

Claims (6)

a lower surface portion 10 having a washing water inlet hole 11 through which washing water is introduced;
an upper surface portion 20 spaced apart from the lower surface portion 10 and provided with a dispersion hole 21 for dispersing the washing water to flow upwardly;
a side portion 30 coupled to the side surfaces of the lower surface portion 10 and the upper surface portion 20; and
Including; including a;
The contaminated water flows in from the lower surface portion 10, passes through the guide tube 13, and then moves to the upper side of the upper surface portion 20, and the washing water flows into the washing water inlet hole 11 and flows into the lower surface. A backwash water dispersing device, characterized in that it is spread between the part (10) and the upper surface part (20) and is dispersed and discharged to the upper side of the upper surface part (20) through the dispersion hole (21). According to claim 1,
A backwash water dispersing device, characterized in that an air inlet hole (12) for injecting cleaning air is formed on the lower surface of the lower surface portion (10). According to claim 1,
A coupling protrusion 14 protruding upward is formed on the edge of the lower surface portion 10,
The backwashing water dispersing device, characterized in that a coupling hole (23) into which the coupling protrusion (14) is inserted is formed at an edge of the upper surface part (20). According to claim 1,
The guide tube 13 is provided in plurality, and is integrally formed on the lower surface portion 10,
The backwashing water dispersing device, characterized in that the upper surface portion (20) is provided with a fitting hole (22) into which the upper end of each guide tube (13) is fitted. According to claim 1,
The lower surface portion 10, the upper surface portion 20, and the side portion 30 are made in the form of a rectangular parallelepiped,
The backwashing water dispersing device, characterized in that the rectangular parallelepiped forms the bottom surface of the filtration unit (9) accommodating the filter member (8) for non-point source filtration. 6. The method of claim 5,
One side of the rectangular parallelepiped is rotatably coupled to the filtering unit 9, so that when the rectangular parallelepiped rotates, the lower side of the filtering unit 9 is opened and the bottom of the filtration tank 3 for accommodating the filtering unit 9 A backwash water dispersing device, characterized in that it can be cleaned and managed.

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