KR102216421B1 - the nonpoint pollution processing system capable of the selective processing according to the contamination concentration - Google Patents

Abstract

The present invention relates to a non-point pollution treatment system capable of selective treatment in accordance with pollution concentration, which is characterized by comprising: a settling tank having a space formed therein, and provided with an introduction line on one side and a discharge line at the upper end portion on the other side; a selective filtering unit including an inner pipe unit mounted on the settling tank to communicate with the discharge line, and having the upper and lower surfaces made of a mesh such that a filter medium may be filled therein, an outer pipe unit forming an interval from the outer circumference of the inner pipe unit such that a bypass flow path may be formed and having a plurality of inlets formed at the lower surface to communicate with the bypass flow path, an opening and closing rotation plate mounted at the lower surface of the outer pipe unit to be rotated and linked and having a communication hole communicating with the inner pipe unit and an opening and closing screen opening and closing the inlet by the rotation and linking on the outside of the communication hole, and a collecting chamber individually communicating with the upper end of the inner pipe unit and the upper end of the outer pipe unit to communicate with the discharge line; a liquid-solid separation tank communicating with the discharge line such that treated water may be introduced therein, and having an aeration tube formed at the lower side to discharge air bubbles; and a filtering unit allowing the treated water to be introduced from the liquid-solid separation tank to perform filtering so as to discharge the final treated water.

Description

The nonpoint pollution processing system capable of the selective processing according to the contamination concentration}

The present invention relates to a non-point pollution treatment system capable of selective treatment according to the degree of pollution and capable of treating pollutants having various properties.

In general, pollutants are point pollutants that have a distinct and limited point of discharge such as domestic sewage, industrial wastewater, and livestock wastewater, and have a wide range of discharge areas such as agricultural land, construction sites, mines, waste treatment plants, landfills, and urban areas. It can be divided into non-point pollutants discharged from pollutants.

In particular, in the case of non-point pollutants, they act as a major factor causing water salt, reaching about 20 to 40% against the pollutant load of public waters such as rivers and lakes, or groundwater. It is of utmost importance to not run it into public waters such as rivers and lakes or underground water without purification.

Devices (facilities) that treat such non-point pollutants can be largely classified into a device type, a facility type, and a natural purification type, and can be classified into a filtering type and a non-filtering type according to the treatment method. Of these, most of the non-filtering type is a sedimentation type or a centrifugal separation type using a cyclone.

On the other hand, when explaining the example of the filtration type, Korean Patent Registration No. 10-894022 "Non-point pollutant treatment device" is presented. In this technology, a variable wear protruding upwardly is provided inside so that the initial rainfall runoff water is introduced, An excellent pipe in which an inlet pipe is formed on one side; A holding part is formed at the top, a screen is formed on the outer surface, and the initial rainfall effluent is introduced through the inlet pipe to separate the effluent from the solid material, and the effluent is formed in a hollow shape surrounding the solid material separator. A first processing unit including an oil-water separator for separating the oil and oil components, and a grit tank formed under the solids separator to store the solids; A first inlet hole is formed so that the effluent water treated by the first treatment unit is introduced, a filtration sedimentation storage tank is formed in which contaminants contained in the effluent water are precipitated, and a fine filtration wall for purifying fine pollutants and the effluent water is provided. A second processing unit; A cartridge porous filter in which a third inlet hole is formed into which the effluent water treated by the second treatment unit flows into, and a plurality of refinery holes are formed on the outer circumference to finally purify the effluent water, A configuration of a third processing unit including an outlet member having a plurality of outlet holes, a fixing portion to which the cartridge porous filter and the outlet member are fixed, and a filter support member connected to the fixing portion are provided.

However, the above technology uniformly treats the influent water through a microfiltration wall and a cartridge porous filter and discharges it.In the case of influent water with high pollutant concentration such as initial rainwater, filtration is required, but after that, influent water with low pollutant concentration such as rainwater. In the case of the same filtration, there is an inefficient problem.

Korean Patent Registration No. 10-894022

The present invention has been devised to solve the above problems, and is to provide a non-point pollution treatment system capable of selective filtration according to the degree of pollution during rainfall, as well as treatment of contaminants having various properties.

As a means for solving the above-described problems, the non-point pollution treatment system capable of selective treatment of the present invention (hereinafter referred to as "system of the present invention") has a space formed therein, and an inlet line on one side and a discharge line on the other side. A settling tank to be formed; In the sedimentation tank, it is mounted to communicate with the discharge line, and an inner pipe portion formed of a mesh network on the upper and lower surfaces so that the filter material is filled therein, and a bypass flow path is formed while forming a distance from the outer periphery of the inner pipe portion. An external portion in which a plurality of inlets communicating with the bypass flow path is formed, and a communication hole is formed on the lower surface of the outer tube to enable rotational communication, and a communication hole communicating with the inner tube is formed, and the inlet is opened and closed by rotational connection outside the communication hole. A selective filtering unit including an opening/closing plate on which an opening/closing film is formed, and a collection chamber communicating with the upper end of the inner tube part and the upper end of the outer part, respectively, and communicating with the discharge line; A solid-liquid separating tank in communication with the discharge line to allow the treated water to flow into the interior and to discharge air bubbles from a lower portion thereof; It characterized in that it comprises a; filtering unit for introducing the treated water from the solid-liquid separation tank to perform filtration treatment and discharge the final treated water.

As an example, at one side of the solid-liquid separation tank, an outlet line for discharging treated water to the filtration unit and a floating material discharging line for discharging suspended solids suspended by the action of air bubbles are included.

As an example, a driving part is formed on the upper part of the collecting chamber, and a rotating shaft that enables rotational interlocking by the driving part is connected to the opening/closing plate through the collection chamber and the inner tube, and the inlet is rotated through rotational connection of the opening/closing plate. It characterized in that the opening and closing is possible.

As an example, a partition is configured to be integrally rotated with the rotary shaft while partitioning the inner tube into a bonus material layer and a lower material layer, which is configured on the rotating shaft, and the partition is formed with upper and lower partition walls to form a space between each other. It is characterized in that a temporary storage space is formed, and a plurality of through holes are formed in the upper and lower partition walls, respectively.

As an example, the through-holes of the upper and lower partition walls are formed at positions that do not face each other up and down.

As described above, the system of the present invention can selectively process according to the pollution concentration during rainfall, thereby reducing the load, and can treat contaminants of various characteristics, thereby discharging treated water that satisfies the discharged water quality standard. There is an advantage.

1 is a schematic diagram showing the system of the present invention,
2 is a schematic diagram showing a selective filtration unit as a configuration of the present invention,
FIG. 3 is a bottom view of an exterior part and an inner tube part in the selective filtering part shown in FIG. 2, and FIG. 4 is a view showing an opening and closing rotation plate in the selective filtering part shown in FIG. 2,
Figures 5a and 5b is an operating state diagram of the present invention,
6 and 7 are diagrams showing another embodiment of a selective filtration unit as a configuration of the present invention.

Hereinafter, the configuration and operation of the present invention will be described in more detail based on the accompanying drawings. In describing the present invention, terms or words used in the present specification and claims are the present invention based on the principle that the inventor can appropriately define the concept of terms in order to explain his or her invention in the best way. It must be interpreted as a meaning and concept consistent with the technical idea of

The system 1 of the present invention includes a sedimentation tank 2 in which a space is formed inside, and an inlet line 21 on one side and a discharge line 22 on the other side as shown in FIG. The sedimentation tank 2 is mounted to communicate with the discharge line 22, and the upper and lower surfaces are formed of a mesh network 311 so that the filter material 312 is filled therein, and the inner pipe part 31 ) Forming a space from the outer periphery of the bypass flow path 321 and forming a plurality of inlet ports 322 communicating with the bypass flow path 321 on the lower surface thereof, and the exterior portion (32) An opening/closing membrane that is mounted to enable rotational interlocking from the lower surface and has a communication hole 331 communicating with the inner tube part 31, and opens and closes the inlet port 322 by rotational interlocking outside the communication hole 331 Optionally including an opening/closing plate 33 on which 332 is formed, and a collection chamber 34 communicating with the upper end of the inner tube 31 and the upper end of the outer part 32, respectively, and communicating with the discharge line 22 Filtration unit 3; A solid-liquid separation tank 5 in which the treated water flows into the inside of the discharge line 22 and has a diffuser 51 for discharging air bubbles from the bottom thereof; It characterized in that it comprises a; filtering unit (4) for introducing the treated water from the solid-liquid separation tank (5) to perform filtration treatment and to discharge the final treated water.

Hereinafter, each configuration of the present invention will be described in detail.

First of all, the sedimentation tank 2 is not limited to a material in which a space for storing influent water is formed therein.

Preferably, at least one partition wall 23 is formed in the sedimentation tank 2, so that sufficient precipitation is made while extending the residence period of the influent water in the sedimentation tank 2 is reasonable.

In addition, the sedimentation tank 2 is configured with an inlet line 21 through which influent water flows in and a discharge line 22 through which treated water is discharged in communication with the outside, and although the drawing number is not shown, sludge that discharges the sediment to the outside. A discharge line is constructed.

As shown in the figure, the selective filtration unit 3 is formed at one upper end of the settling tank 2, and the influent water from the settling tank 2 flows upward from the bottom of the selective filtration unit 3, while filtering or bypassing The pass is made and the filtered or bypassed treated water is discharged to the outside through the discharge line 22.

As shown in the drawing, the selective filtration unit 3 is formed of an inner pipe part 31, an outer part 32, an opening/closing plate 33, and a collection chamber 34, as described below, as described below. When the contamination concentration is high, the influent water flows only through the inner tube part 31 so that filtration is performed. In the case of the initial excellence, when the contamination concentration is low, it is mainly formed by the exterior part 32 and the inner tube part 31. By allowing the influent water to flow through the bypass flow path 321, the filter load is reduced and efficient operation is possible. In other words, due to the configuration of the selective filtration unit 3, rainwater is delivered as it is without the need for a separate flow control tank at the front end, and the efficiency of the device is selectively treated according to the concentration of pollution such as rainwater after the initial rainwater and rainwater after the initial rainwater. Is to promote.

The detailed configuration of the selective filtration unit 3 will be described in detail.

The inner pipe part 31 is configured to perform a filtering function by filling the filter medium 312 therein. The inner pipe portion 31 is filled with a filter material 312 therein, and the upper and lower surfaces thereof are finished with a mesh net 311 so as to communicate with each other. Naturally, the mesh size of the mesh network 311 must be smaller than the diameter of the filter material 312.

The exterior portion 32 corresponds to a configuration in which the bypass flow path 321 is formed while forming a distance from the outer periphery of the inner tube portion 31. As mentioned above, in the case of rainwater having a low pollutant concentration after the initial rainwater, it is mainly discharged through the bypass passage 321 to lower the filtration load.

In other words, in the case of rainwater having a low pollution concentration after the initial rain, it is discharged without filtration (if the filtration means mentioned above is configured, only by the first filtration treatment) to control the flow load and filtration load.

To this end, a plurality of inlets 322 communicating with the bypass flow path 321 are formed on the lower surface of the outer portion 32, as shown in the drawing to form a plurality of inlets 322. Blocking ends 323 are formed on both sides. The end of the blocking end 323 is attached to the outer periphery of the inner pipe part 3 so that the fluid flowing in from the lower direction flows upward through the inlet 322 and the lower end of the inner pipe part 3.

The opening/closing plate 33 is mounted to enable rotational interlocking on the lower surface of the outer part 32. To this end, as shown in FIG. 2, a driving part 6 is formed on the upper part of the collecting chamber 34, and the driving part ( 6), a rotating shaft 7 that enables rotational interlocking is connected to the opening/closing plate 33 through the collection chamber 34 and the inner pipe part 31, so that the opening/closing plate 33 is connected to the inner pipe part 31 ) And the outer portion 32 to enable rotational interlocking at the bottom.

The driving unit 6 may include a motor and a control unit so that the rotation shaft 7 can be rotated manually, or automatically driven according to a pre-input time period corresponding to an initial excellence during rainfall. . Of course, in addition to interlocking according to the pre-input time section corresponding to the initial excellence, it is not shown in the drawing, but it can be automatically driven by the control of the control unit by interlocking with the water quality and flow sensor. There is.

The opening/closing plate 33 has a communication hole 331 communicating with the inner tube part 31, and an opening/closing film 332 that opens and closes the inlet 322 outside the communication hole 331 by rotational interlocking. It is characterized by being.

As shown in Fig. 4, an inner ring (331-1) is configured to form the communication hole (331), and a fixture (331-3) fixed to the rotation shaft (7) is formed inside the communication hole (331), The inner ring (331-1) and the fixture (331-3) are connected by a support (331-2) so that the communication hole (331) is in constant communication with the lower end of the inner tube (31).

The opening/closing film 332 radially protrudes from the inner ring 331-1, and each end of the opening/closing film 332 is connected to the outer ring 333.

When explaining the operation relationship of the selective filtering unit 3 by the configuration of the opening and closing rotating plate 33, first, when the contamination concentration such as initial excellence is high, as shown in Fig. 5A, the opening and closing rotating plate 33 is opened by rotation. The closing membrane 332 closes the inlet 322 so that the fluid flows only into the inner tube part 31. That is, as shown in FIG. 2, only the fluid flow (w1) through the inner tube part 31 is formed so that only the filtered fluid is discharged through the collection space 34 and out through the discharge line 22. It is to improve the water quality.

Then, when the concentration of pollution such as rainwater after the initial rainwater is low, the opening/closing membrane 332 opens the inlet 322 by the rotation of the opening/closing plate 33 as shown in FIG. 5B, and the fluid is transferred to the bypass flow path 321. And it is to be introduced into the inner tube portion 31. That is, as shown in FIG. 2, the fluid flow (w2) through the bypass flow path 321 and the fluid flow (w1) through the inner pipe part 31 are simultaneously performed. Mainly, the fluid through the bypass flow path 321 In the case of fluids with water quality, which is mainly due to the flow (w2) of water, which has a low pollution concentration and can be discharged as it is, it is to control problems such as backflow by reducing the filtering load and ensuring smooth discharge.

Meanwhile, channeling may occur due to the pulling of the filter medium 312 or the like in the process of continuously performing filtration in the inner tube part 31. That is, the fluid does not flow uniformly, but flows only through some channels, resulting in a problem of lowering filtration efficiency.

Accordingly, in the present invention, an embodiment for controlling the problem of channeling is presented in FIGS. 6 and 7.

In an embodiment of the present invention, as shown in FIG. 6, the partition 8 is configured to solve the above problem, but the partition 8 is configured on the rotation shaft 7 so that the inner tube 31 ) Is configured to be integrally rotated with the rotation shaft while dividing it into a bonus material layer 324 and a layer material 325.

The partition 8 is configured with upper and lower partition walls 81 and 82 to form a mutual separation so that a temporary storage space 83 is formed therein, and the upper and lower partition walls 81 and 82 are respectively It is characterized in that a plurality of through holes (811, 821) are formed.

In this way, the partition 8 is configured so that the fluid that has passed through the upper partition wall 82 is stored in the temporary storage space 83 through the through hole 821 of the lower partition wall 82, and the upper partition wall 81 Through each of the through-holes 811 of the to be uniformly penetrated into the bonus material layer 324. That is, the purpose is to control the concentration of fluid flow by allowing the fluid to evenly penetrate upward in the bonus material layer 324. Channeling is mainly performed at the upper end in bottom-up filtration. This is because the filter media is shifted downward due to the specific gravity over time, and the gap between the media may be relatively large at the upper end. Channels are formed in a direction with a larger gap, which lowers the filtration efficiency. Accordingly, in the present invention, the partition 8 is configured so that the fluid that has passed through the layer 325 is temporarily stored and simultaneously penetrates into the bonus layer 324 to induce a uniform flow of the fluid.

In addition, in this embodiment, as shown in FIG. 7, the through-holes 811 and 812 of the upper and lower partition walls 81 and 82 are further presented in such a way that the through holes 811 and 812 are formed in positions not facing each other in the upper and lower directions. The reason that the through-holes 811 and 812 of the upper and lower partition walls 81 and 82 are formed at a position not facing each other is that the fluid that has passed through the through-hole 812 of the lower partition wall 82 81) to form a vortex while colliding with the temporary storage space (83) to take a long storage time. This is to further reduce the possibility of channeling occurrence by making the pressure of the fluid penetrating upward into the through hole 811 of the upper partition wall 81 by increasing the storage time in the temporary storage space 83. If the through holes 811 and 812 are formed at opposite positions, the pressure of the fluid discharged from the lower partition wall 82 to each through hole 812 is different, so if the straightness of the fluid flow is guaranteed, the upper partition wall ( 81), the penetration pressure may be different from each other, so that channeling can be formed. In this embodiment, the through holes 811 and 812 of the upper and lower partition walls 81 and 82 are vertically Each is to be formed in a position that does not face each other.

In addition, the partition portion 8 is configured to be integrally rotated with the rotation shaft 7, and the through-holes 811 and 812 of the upper and lower partition walls 81 and 82 are rotated by the rotation of the partition portion 8. The position is changed to change the flow length of the fluid from the material layer 325 to the bonus material layer 324 to prevent a channel formed by the fixed flow path.

The solid-liquid separation tank 5 is characterized in that the treated water is introduced into the inside of the solid-liquid separation tank 5 in communication with the discharge line 22, and a diffuser 51 for discharging air bubbles is formed from the bottom thereof.

At the front end, the treated water, which has been filtered through precipitation and selectively filtered, flows into the solid-liquid separation tank 5 to filter foreign substances with relatively small specific gravity by floating by floating air bubbles. .

As shown in the drawing, the diffuser 51 is connected to the air supply means 52 so that the air bubbles are aerated, so that foreign matter with a small specific gravity is filtered out by the aerated air bubbles, as well as in the case where the air bubbles are miniaturized, it is difficult to decompose. Decomposition of organic matter is also possible.

The treated water obtained by solid-liquid separation in the solid-liquid separation tank (5) is allowed to flow into the filtering unit (4) at the rear end through the outlet line (54), and the suspended foreign matter is discharged to the outside through the floating material treatment line (53). Is to do.

The treated water that has passed through the solid-liquid separation tank 5 is introduced into the filter unit 4 at the rear stage to be filtered, so that the final treated water is discharged.

Here, the filtering unit 4 can be applied to various known technologies, and detailed descriptions thereof will be omitted.

It will be appreciated by those skilled in the art through the above description that various changes and modifications can be made without departing from the technical idea of the present invention. Accordingly, the technical scope of the present invention should not be limited to the content described in the detailed description of the specification, but should be determined by the claims.

1: system of the present invention 2: settling tank
3: selective filtration unit 4: filtration unit
5: solid-liquid separation tank

Claims (5)

A sedimentation tank having a space formed therein and an inlet line on one side and a discharge line on the other side;
In the sedimentation tank, it is mounted to communicate with the discharge line, and an inner pipe portion formed of a mesh network on the upper and lower surfaces so that the filter material is filled therein, and a bypass flow path is formed while forming a distance from the outer periphery of the inner pipe portion. An external portion in which a plurality of inlets communicating with the bypass flow path is formed, and a communication hole is formed on the lower surface of the outer tube to enable rotational communication, and a communication hole communicating with the inner tube is formed, and the inlet is opened and closed by rotational connection outside the communication hole. A selective filtering unit including an opening/closing plate on which an opening/closing film is formed, and a collection chamber communicating with the upper end of the inner tube part and the upper end of the outer part respectively and communicating with the discharge line;
A solid-liquid separating tank in communication with the discharge line to allow the treated water to flow into the interior and to discharge air bubbles from a lower portion thereof;
A filtration unit for introducing treated water from the solid-liquid separation tank and performing filtration treatment to discharge final treated water; Including,
A driving part is configured on the upper part of the collecting chamber, and a rotating shaft that enables rotational interlocking by the driving part is connected to the opening/closing plate through the collection chamber and the inner tube, and the inlet can be opened and closed by rotational interlocking of the opening/closing plate. Non-point pollution treatment system capable of selective treatment according to the pollution concentration to be performed.
The method of claim 1,
One side of the solid-liquid separation tank includes an outlet line for discharging treated water to the filtration unit and a floating material discharging line for discharging suspended solids to the outside by the action of air bubbles. Non-point pollution treatment system available.
delete The method of claim 1,
It is configured on the rotation shaft and divides the inner tube into a bonus material layer and a layer material layer, and a division part is configured to be integrally rotated with the rotation axis, and the division part has upper and lower partition walls to form a spaced apart from each other to temporarily store the inner tube. Non-point pollution treatment system capable of selective treatment according to pollution concentration, characterized in that a space is formed and a plurality of through holes are formed in each of the upper and lower partition walls.
The method of claim 4,
Non-point pollution treatment system capable of selective treatment according to pollution concentration, characterized in that the through holes of the upper and lower partition walls are formed at positions not facing each other.

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