KR100985170B1 - Treatment apparatus for rain water - Google Patents

Abstract

PURPOSE: A treatment apparatus for rain water is provided to prevent the direct inflow of various kinds of waste water which are swept with rainfall. CONSTITUTION: A treatment apparatus for rain water includes an inlet tube(11), a screen for removing an adulteration at the inlet tube, an inlet bath(10), a height adjustable conduit(22), a flow path which is divided by a partition wall and a sidewall, and filled filter paper(21) which is filed by porous filtering media.

Description

Initial excellent treatment device {TREATMENT APPARATUS FOR RAIN WATER}

The present invention is a device that can remove various types of water contaminants introduced with flowing water, such as rainwater (rainwater), in particular, the initial stage that can filter or separate the water contaminants using porous particles as a filter medium (濾 材) It is a rainwater treatment device.

The initial excellent water treatment apparatus used in the prior art is a reality that adopts a method of separating the floating rainwater in a spiral vortex by centrifugal separation or by dropping to the bottom by gravity action in order to separate the suspended matter and solids.

As described above, the conventional early excellent treatment apparatus that removes suspended solids or solids by centrifugation or gravitational action causes a problem of polluting the ecosystem by being discharged into the water without sufficiently removing the solids or compounds of fine particles. I think it is time for improvement measures.

Accordingly, the present invention was created to solve the above-mentioned problems.

SUMMARY OF THE INVENTION An object of the present invention is to provide an initial excellent treatment apparatus capable of effectively removing various types of contaminants accumulated in a nonpoint source through flowing water such as rainwater. In order to improve, the filter medium is provided with a porous filter to filter the rainwater in a downward flow.

An object of the present invention is characterized by being able to treat contaminants contained in rainwater by means of physical filtration.

The present invention is designed to treat contaminants contained in rainwater through the sedimentation effect with various types of physical filtration treatment.

In other words, the present invention not only filters the contaminants that are swept into the rainwater through the screen for removing the impurities and the porous media (artificial sand), but also subsides the sedimentary substances contained in the rainwater while staying in the inflow tank. It can be implemented by precipitation treatment.

In addition, in order to overcome the problem that the excellent treatment ability using the porous particles according to the present invention decreases over time, the backwash water flowing upwardly is supplied to the filtration tank to separate foreign matters (sediments) attached to the porous media. It can be characterized by.

In addition, in order to solve the problem that the contaminants accumulated in the inflow tank decay and cause odor after the rainfall is over, the hole is drilled at the bottom of the inflow tank, and gravel or porous media is installed outside to filter the contaminants. It is characterized in that it comprises a device for penetrating the basement after.

According to the description of the present invention, the present invention is provided so as to prevent the various types of contaminants swept away with rainwater directly into the water system.

The present invention includes a filter paper filled with a porous filter in the filter tank, and is designed to guide rainwater downflow on the filter paper so that the fine contaminants are contacted with the porous filter.

In particular, the present invention is designed to simply implement a backwash method to maintain the processing capacity of the filter paper, it is possible to remove the contaminants deposited in the pores between the media by the backwash water supply from the porous media have.

In addition, the present invention can significantly reduce the amount of backwash water to fill the filtration tank during backwashing can significantly reduce time and labor.

Now, the initial excellent treatment apparatus of the present invention will be described in more detail with reference to the accompanying drawings.

1 is a schematic cross-sectional view of an initial excellent treatment apparatus according to a first embodiment of the present invention.

As shown, the initial excellent water treatment apparatus of the present invention is the inlet tank 10 receives the rainwater, the filter tank 20 that can receive the rainwater collected in the inlet tank 10 can be secondary treatment, and the treatment It consists of a discharge tank 30 for discharging water.

The inflow tank 10 includes an inflow pipe 11 for supplying rainwater and a screen 12 for removing impurities. The screen for removing the contaminants 12 serves to filter out the contaminants or floats having a relatively large particle size to be introduced into the inflow tank 10 together with the flow of rainwater to be supplied to the inlet pipe 11.

As the inflow tank 10 is a primary treatment tank, rainwater introduced into the inflow tank 10 may be collected to provide a space for depositing sediment or sediment to the bottom.

The treatment water thus treated is guided to the filtration tank 20 partitioned into the inflow tank 10 and the partition wall 15 '.

The partition wall 15 'partitions the inflow tank 10 and the filtration tank 20, and the partition wall 15' reliably shields the inflow tank 10 and the filtration tank 20, and closes the partition wall 15 '. Through the conduit 22 to allow the inflow tank 10 and the filtration tank 20 to be in fluid communication with each other. In other words, the conduit 22 allows the storm or backwash water to move between the inlet 10 and the filtration 20.

Conduit 22 is preferably positioned higher than filter paper 21.

In particular, the conduit 22 is designed to be height adjustable, which can be made in a variety of ways that are well known to those skilled in the art. In the accompanying drawings, the conduit 22 is a bellows pipe type having a plurality of corrugations so that height can be adjusted.

The conduit 22 can adjust the head of the filtration tank 20, and also lowers the height of the conduit 22 when discharging the backwash water, thereby reducing the head of the filtration tank 20 for discharging the backwash water to the inflow tank 10. Can be lowered. This height-adjustable conduit 22 is the height of the head of the filtration tank 20 is adjusted according to the height of the conduit 22 at the time of filtration, when the head is high, the flow rate of rainwater that passes through the filtration tank 20 is faster Can improve. That is, it is possible to control the processing speed of rainwater through the height adjustment of the conduit 22. On the contrary, if the height of the conduit 22 is lowered as much as possible during the back washing, the back washing water passing through the filter paper 21 is transferred to the inflow tank 10 along the conduit 22 arranged low. This provides the advantage of minimizing the supply of backwash water.

As described above, the conduit 22 provided in the partition wall 15 'provides an excellent flow passage, through which the treated water first treated in the inflow tank 10 passes through the partition wall 15' through the conduit 22. Allow it to move through the filtration tank 20.

Primary treatment water introduced into the filtration tank 20 is filtered while passing through the filter paper 21 located near the lower portion of the filtration tank 20. In particular, the primary treated water penetrates through the filter paper 21 in a downward flow from the top to the bottom. Preferably, the filter paper 21 is disposed parallel to the bottom surface of the filter tank 20 and filled with the porous media 214. The structure of the filter paper 21 is shown in detail in the arc of FIG. 1.

With reference to the arc, the filter paper 21 is composed of a support 211, a wire mesh 212, a coarse sand layer 213, and a porous media 214. The support 211 may be disposed between the partition wall 15 ′ and the side wall 25 of the filtration tank 20 to sufficiently retain the porous media as well as the wire mesh and the coarse sand layer to be seated thereon. Wire mesh 212 is arranged on support 211 as shown. The wire mesh 212 is preferably selected in a compact structure so as to prevent the constituents to be seated thereon, such as coarse sand, from leaking under the filter paper 21. The wire mesh 212 is not only for preventing the loss of coarse sand as described above, but also helps the upstream movement of the backwash water when backwashing the filter paper 21.

One or more wire meshes 212 may be stacked to more effectively prevent the outflow of coarse sand.

The porous media 214 is seated on the coarse sand layer 213 arranged on the wire mesh 212 to filter rainwater flowing down in the filtration tank 20. Optionally, the porous media 214 has a size of 3 mm or less.

The secondary treated water filtered by the filter paper 21 is guided to the discharge tank 30 partitioned into the filter tank 20 and the side wall 25. The side wall 25 partitions the filtration tank 20 and the discharge tank 30. As shown in the drawing, the lower side of the side wall 25 is opened to serve as a flow passage of the treated water, through the opening 251. The treated water secondary treated at 20 may move to the discharge vessel 30 as it passes under the side wall 25.

The discharge tank 30 discharges the treated water which has sufficiently removed contaminants and filtered through the inflow tank 10 and the filtration tank 20 to the outside by means of the outlet pipe 31.

In the treatment device for filtering the excellent water of this structure, if the efficiency of the porous filter medium in the filtration tank 20 is significantly reduced, the initial excellent treatment device according to the present invention is to supply the backwash water to separate the sediments attached to the porous filter medium 214 It is supposed to be.

The present invention further includes a backwash water supply pipe 32, a first discharge pipe 13, and a second discharge pipe 33 for supply and discharge of the backwash water. Here, the backwash water to be discharged to the first discharge pipe 13 and the second discharge pipe 33 may be discharged through the gravel and / or porous media or through other filtration treatment.

During backwashing, the inlet pipe 11 is closed to block further inflow of rainwater. It is preferable that the inflow tank 10 keeps empty state by sending the rainwater collected in the inside to the outside. The second discharge pipe 33 is maintained in a closed state together with the discharge pipe 31 provided in the discharge tank 30. As shown, the outlet pipe 31 may control the opening and closing of the outlet pipe via a separate valve 35. Then, the backwash water supply pipe 32 is opened so that the backwash water can be supplied to the discharge tank 30. The backwash water may reuse some of the filtered water to be discharged to the outlet pipe 31 or may be supplied from a separate backwash water source.

As time passes, the backwash water fills the discharge vessel 30 and also flows into the filtration tank 20 through the lower opening 251 of the side wall 25 and is reversed from the filtration tank 20 together with the discharge tank 30. The level of the wash water rises.

The filling backwash water thus flows up through the filter paper 21 of the filter tank 20 so that the backwash water passes through the filter paper 21 from the bottom up, and the porous media 214 of the filter paper 21 with the turbulent flow of the backwash water. Sediment attached to) can be separated. In other words, various sediments deposited on the porous filter media 214 are separated through a process of disturbing the porous filter media 214 disposed on the filter paper 21 while the backwash water flows upward. Of course, when the supply of backwash water is stopped, the porous media 214 sinks on the coarse sand layer 213. Despite the upward flow of backwash water, unnecessary movement of the coarse sand layer 213 will be limited by its own weight. The sediment rising due to the rise of the backwash water moves from the filtration tank 20 along the conduit 22 of the partition 15 ′ to the inlet tank 10.

After the sediment is sufficiently separated from the porous media 214 and the suspended sediment is moved to the inlet 10 along the conduit 22, the backwash water supply pipe 32 is closed to block the supply of the backwash water. . Thereafter, the first discharge pipe 13 at the lower portion of the inflow tank 10 and the second discharge pipe 33 at the lower portion of the discharge tank 30 are opened to treat the backwash water and the sediment with the initial excellent treatment apparatus according to the present invention. To be discharged to the outside.

In addition, the bottom surface of the inflow tank 10 is inclined so that when the first discharge pipe 13 is opened, not only the contaminants separated from the backwash water and the porous media but also the sediment that has settled on the bottom surface of the inflow tank 10 are first. The discharge pipe 13 can be discharged more smoothly. Optionally, porous filter material (15 ~ 50mm in diameter) is installed inside and outside of the discharge pipe so that solid contaminants in the sediment are collected and the filtered water penetrates into the base, and the solid form accumulated inside the inflow tank. Pollutants can be treated by suction dredgers at the end of rainfall.

The second discharge pipe 33 of the discharge tank 30 is also opened to discharge the backwash water and / or the treated water which were accommodated in the filtration tank 20 and the discharge tank 30 from the initial excellent treatment apparatus of the present invention.

The backwash water to be discharged to the first discharge pipe 13 and the second discharge pipe 33 is preferably discharged through another filtration through the gravel and / or porous media.

2 is a schematic cross-sectional view of an initial excellent treatment apparatus according to a second embodiment of the present invention.

The second embodiment of the present invention shown in FIG. 2 is provided with a backwash supply means in place of the outlet tank 30 located downstream of the filtration tank 20 in the first embodiment of the present invention shown in FIG. It is similar except that the unit is provided separately. Accordingly, descriptions of similar or identical components will be omitted herein for the sake of clarity of understanding.

The second embodiment of the present invention is the inflow tank 10 for receiving rainwater, the filtration tank 20 to receive the rainwater collected in the inflow tank 10 can be secondary treatment, the outlet pipe for discharging the treated water And a backwash water pump (P) which is in communication with the outlet pipe (34) and supplies the backwash water. The treated water filtered by the filtration tank 20 is discharged to the outside along the outlet pipe 34 instead of being discharged to the outside in the first embodiment to the discharge tank 30 (see Fig. 1).

The filtration tank 20 is partitioned into a partition wall 15 'and a side wall 25, and the rainwater firstly processed in the inflow tank 10 moves to the filtration tank 20 through the conduit 22 of the partition wall 15'. On the other hand, the lower opening 251 of the side wall 25 has an outlet pipe 34 for controlling or controlling the discharged water to discharge the treated water treated with the filter paper 21 to the external water system.

Preferably, the outlet pipe 34 is positioned equal to or lower than the installation height of the filter paper 21 to help the discharge of the discharged water.

The outlet pipe 34 is provided with an on / off valve (without reference numeral) so that the backwash water can be filled in the filtration tank 20 during backwashing.

The backwash water pump (P) of the present invention may be in fluid communication with the outlet pipe (34) via a pipe branched and extended from the outlet pipe (34) to supply the backwash water to the initial excellent treatment device through the outlet pipe (34). have. Optionally, a pipe with backwash water pump P may be connected directly to opening 251.

During backwashing, first, the rainwater or treated water in the filtration tank 20 is completely discharged through the outlet pipe 34, and then the on / off valve is closed. Then, the backwash water is driven by the backwash water pump P and passes through the outlet pipe 34 provided in the opening 251 along the pipe and is guided to the lower portion of the filtration tank 20. While supplying the backwash water continuously, the filtration tank 20 is gradually filled with backwash water.

The backwashing water thus filled penetrates the filter paper 21 of the filter tank 20 in an upward flow. The backwash water passes through the filter paper 21 from the bottom up, and deposits the sediment attached to the porous media 214 of the filter paper 21. Can be separated. The sediment emerging from the rise of the backwash water moves from the filtration tank 20 along the height adjustable conduit 22 of the bulkhead 15 'to the inlet tank 10.

After the sediment is sufficiently separated from the porous media 214 and the suspended sediment is moved to the inflow tank 10, the backwash water pump P is stopped to block the supply of the backwash water. Then, the first discharge pipe 13 in the lower portion of the inlet tank 10 is opened to discharge the backwash water and the sediment to the outside from the initial excellent treatment apparatus according to the present invention.

Here, the porous media to be used as the filter medium of the present invention is a porous artificial sand is mixed with a blowing agent in a glass powder having a small particle size, the mixture is heated to a high temperature (for example 800 ~ 1,100 ℃) and cooled to crush the particle diameter is 3mm Below, the porous particle media having a volume density of 0.4 to 0.6 g / cm 3 and a water saturation of 1.3 to 1.8 g / cm 3 and a porosity of 65 to 80% is used for water purification.

1 or 2 is a schematic cross-sectional view of the initial excellent water treatment apparatus of the present invention, the solid arrows shown in the drawing is the outlet pipe 31 and / or the outlet pipe ( The dotted line arrow shows the route to the backwash water inlet and outlet, while showing the route to 34).

It is to be understood that the invention is not limited to the description and that modifications and variations are possible within the scope of the following claims.

1 is a schematic cross-sectional view of an initial excellent treatment apparatus according to a first embodiment of the present invention.

2 is a schematic cross-sectional view of an initial excellent treatment apparatus according to a second embodiment of the present invention.

<Description of Symbols on Main Parts of Drawings>

10 ----- inlet tank,

20 ----- filtration tank,

30 ----- discharge tank,

31, 34 ----- outlet pipe,

32 ----- backwash water supply pipe,

P ----- Backwash Pump.

Claims (8)

In the apparatus for processing the initial excellent, An inflow tank (10) having an inflow pipe (11) to help the inflow of rainwater and a screen for removing contaminants (12) positioned close to the inflow pipe (11), and collecting the rainwater introduced into the inflow pipe (11). )Wow; The flow passage of rainwater is divided into a partition 15 'and a side wall 25, and a height-adjustable conduit 22 penetrating the partition 15' and an opening 251 provided below the side wall 25. To provide, and the filter paper 21 filled with a porous filter medium is spaced apart in parallel with the bottom surface filter tank 20; The porous media is a porous artificial sand, which is a granular body obtained by heating a mixture of a blowing agent in a glass powder having a small particle size to a high temperature and cooling and pulverizing it. The granular body has a particle diameter of 3 mm or less and a volume density of 0.4 when drying. -0.6g / cm3, 1.3-1.8g / cm3 at the time of water saturation, initial stage excellent treatment apparatus characterized in that the porosity is 65-80%. The backwash water supply pipe of claim 1, which is partitioned from the filtration tank 20 by a side wall 25, and provides an excellent flow passage through the opening 251 under the side wall 25, and supplies a backwash water. And an outlet tank (30) further downstream of the filter tank (20) having an outlet pipe (31) to help discharge the filtered water to the external water system. The initial excellent treatment apparatus according to claim 1 or 2, characterized in that discharge pipes (13, 33) are provided under the inflow tank (10) and the discharge tank (30), respectively. The filter paper (21) according to claim 1, further comprising: a support (211) disposed between the partition wall (15 ') and the side wall (25); One or more wire meshes 212 disposed on the support 211; Coarse sand layer 213; And porous media 214; the initial excellent treatment apparatus, characterized in that arranged. delete The initial excellent treatment apparatus according to claim 1, wherein the opening part (251) has an outlet pipe (34) extending in an external water system. The initial excellent treatment apparatus according to claim 6, wherein the outlet pipe (34) has an on / off valve and a backwash water pump (P) connected by a pipe branched from the outlet pipe (34). The initial excellent treatment apparatus according to claim 1, wherein the conduit (22) is positioned higher than the filter paper (21).

Images