KR100805877B1 - Apparatus for screening overflow of stormwater and combined sewer storage tank - Google Patents

Abstract

An apparatus for screening overflows of a storm water and combined sewer storage tank is provided to prevent river contamination by screening sewage bypassing from a storage tank to a river and filtering out impurities, and to prevent lowering in efficiency of a screen device and to maintain a screen device easily by removing pollutants caught in a screen device automatically. An apparatus for screening overflows of a storm water and combined sewer storage tank comprises a storage tank(10) formed to have an empty structure within, installed to be exposed to the middle of a sewer(1), connected with the sewer to store sewage in a heavy rain and divided into a first chamber(12) connected with the sewer and equipped with an inflow pipe(14) and an outflow pipe(15) to let sewage in and out, and a second chamber(13) bypassing sewage overflowing a separation wall(11) from the first chamber to a river directly through a bypass pipe(16), a screen device(20) installed to the separation wall toward the first chamber to filter out solid pollutants from the overflows, and a washing device(30) installed to the first chamber to wash off the screen device to remove pollutants caught in the screen device while the screen body filters out pollutants and composed of an underwater pump installed to the first chamber to pump out sewage in the first chamber, an ejector(35) connected with the underwater pump to form jet stream of sewage from the underwater pump and to jet out the jet stream to the screen body to remove pollutants caught in the screen device, and an air injection pipe connected to be exposed to the surface of the water from the ejector to inject air to the ejector and to mix air to the sewage.

Description

Apparatus For Screening Overflow Of Stormwater And Combined Sewer Storage Tank}

1 is a plan view showing a storage tank overflow water screen device according to the present invention,

2 is a cross-sectional view taken along line II of FIG. 1;

3 is a cross-sectional view taken along the line II-II of FIG. 1;

4 is a bottom perspective view showing a portion A shown in FIG. 1 from below;

5a and 5b is a state of use of the storage tank overflow water screen device according to the invention,

6 is a view showing a modification of the storage tank in FIG.

<Description of the symbols for the main parts of the drawings>

1: sewage pipe 10: reservoir

11: Separation wall 12: First chamber

13: 2nd chamber 14: Intake pipe

15: drain pipe 16: bypass pipe

17: access cover 18: lifting ring

20: screen mesh 30: washing means

31: Submersible pump 33: Tube

35: ejector 37: air injection pipe

61: fixed plate 63: support means

71: sensor

The present invention relates to a sewage storage tank overflow screen device used in a storage tank for temporarily storing and regulating the rainwater and confluent sewage (hereinafter referred to as "sewage") that are installed in the middle of a sewage pipe and overflowed due to heavy rain. In particular, the present invention relates to a sewage storage overflow screen device for screening sewage, which is bypassed from a storage tank to a stream, to filter out contaminants (solid matter) and to automatically clean it while filtering contaminants.

In general, in the middle of sewage pipes that collect sewage from various sewers and send them down to the sewage treatment plant, temporary storage and control of sewage flowing in due to the contact and heavy rains of the sewage pipes prevents inundation of the downstream and prevents the sewage treatment plant. It is well known that reservoirs have been established to promote and prevent pollution of rivers. The storage tank is designed to maintain a constant level by forming a bypass space therein and bypassing a part of the excess sewage into a river or the like.
However, existing storage tanks do not filter the sewage that is bypassed, and discharge it into the rivers so that solid materials (pollutants) such as panties, fabrics, vinyl fragments, bones, etc., which have been floated with the sewage during heavy rains, can flow into the rivers. By providing a cause for polluting rivers and the like.

Therefore, an object of the present invention is to solve such a problem, the sewage storage tank overflow screen device for screening the sewage bypassed from the reservoir tank to the river to filter the pollutants to greatly prevent the pollution of the river, etc. To provide.

It is another object of the present invention to provide a sewage reservoir overflow screen device for preventing the degradation of the screen means and facilitating its maintenance by continuously removing the contaminants stuck to the screen means by automatically cleaning while screening the contaminants. have.

Sewer storage tank overflow water screen device of the present invention for achieving the above object is, the interior of the hollow structure is installed so that only the upper surface is exposed in the middle of the sewage pipe, the inside of the sewage pipe and the separation wall between A storage tank, the upper surface of which is divided into a first chamber in communication with a second chamber for bypassing sewage that overflows the dividing wall from the first chamber; A screen net body installed on the partition wall and positioned in the first chamber to screen contaminants flowing over the partition wall to filter contaminants; It is installed in the first chamber, is installed in the first chamber is connected to the water pump for pumping and pumping the sewage in the first chamber and the submersible pump and the pipe is connected to the jet of the sewage from the water pump ( Ejector for removing contaminants stuck to the screen net by spraying the screen net while forming jets and connected to the water surface from the ejector is installed to inject air into the ejector to mix air into the sewage Characterized in that it comprises a washing means consisting of an air injection pipe to.

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In addition, the fixing plate body is provided at a predetermined distance from the separating wall toward the first chamber, and the screen net body is preferably installed to be separated in a semicircular shape between the fixing plate body and the separating wall.

In addition, the screen net material is preferably made of stainless steel.

The apparatus may further include a control means installed in the first chamber and electrically connected to a sensor for sensing the water level. The control means may be electrically connected to the submersible pump to control the submersible pump. It is desirable to control the operation.

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The above objects, advantages and other features will become apparent from the following description with reference to the accompanying drawings.

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

1 is a plan view showing a storage tank overflow water screen device according to the present invention, Figure 2 is a cross-sectional view taken along the line I-I of Figure 1, Figure 3 is a cross-sectional view taken along the line II-II of Figure 1, Figure 4 is a bottom portion A in Figure 1 5A and 5B show a state of use of the storage tank overflow water screen device according to the present invention, and FIG. 6 is a view showing a modification of the storage tank in FIG.

As shown in the drawing, the storage tank overflow water screen device for sewage according to the invention is connected to the sewage pipe (1) by being installed buried so that only the upper surface is exposed in the middle of the sewage pipe (1) to the hollow structure inside the sewage pipe (1 The storage tank 10 for storing sewage at the time of liaison and rainy season heavy rain is provided. The storage tank 10 has a first wall 12 communicating with the sewer pipe 1 with a partition wall 11 interposed therebetween from the bottom and the partition wall from the first chamber 12 during heavy rain. The first chamber 12 has a structure partitioned by a second chamber 13 for directly bypassing sewage (hereinafter referred to as "overflow water") that overflows 11 into a river or the like. The inlet and drainage pipes 14 and 15 are respectively installed to receive and discharge the contact with the sewer pipe 1 and the sewage. The overflowed water is discharged to a river or the like through a bypass pipe 16 installed on the wall of the second chamber 13. It is preferable that the access cover 17 is installed on the upper surface of the bird tank 10, the access cover 17 is preferably installed toward the second chamber (13). Reference numeral 18 denotes lift rings.

The screen net body 20 is installed on the separation wall 11 toward the first chamber 12. The screen net 20 is responsible for filtering contaminants (solid matter) from the overflow water. The screen net 20 is installed toward the first chamber 12 on the separation wall 11 to screen the overflow water to filter contaminants. The screen net 20 is formed in a semicircular shape between the fixed plate body 61 and the separating wall 11 installed at a predetermined distance from the separating wall 11 toward the first chamber 12. It is installed so that the opening faces downward. The fixed plate body 61 is fixedly installed on the support means 63 fixedly installed on the upper surface of the first chamber 12 so as not to be affected by the sewage. The screen net 20 is preferably installed separately for repair and replacement, preferably made of stainless steel resistant to corrosion.

On the other hand, the first chamber 12 is provided with a washing means 30. The cleaning means 30 has a function of cleaning the screen net 20 while the screen net 20 filters out contaminants to continuously remove contaminants caught on the screen net 20. For this reason, the screen net 20 is not blocked due to the contaminants caught on the surface, and the performance can be continuously filtered out. In addition, there is no need to wash the screen net 20 separately.

The washing device 30 in charge of such a function is installed in the first chamber 12, the submersible pump 31 for pumping and pumping the sewage in the first chamber 12, and the submersible pump 31 ) Is connected with the pipe body 33 therebetween, and sprays the sewage from the submersible pump 31 to the screen mesh 20 while forming a jet stream to contaminate the contaminants caught on the screen mesh 20. Ejector 35 for removal and the air injection pipe 37 for mixing the air into the sewage by injecting air into the ejector 35 is installed so as to be exposed to the water surface from the ejector 35.
The ejector 35 removes contaminants trapped on the screen net 20 by spraying jets under the screen net 20.
When the air is injected into the ejector 35 through the air injection pipe 37, the size of the jet flow increases, so that the contaminants caught in every corner of the screen net 20 can be effectively removed. In addition, since the air bubbles are formed in the water, contaminants trapped on the screen net 20 are effectively removed.

The washing means 30 is operated under the control of a control means (not shown) such as a control panel equipped with a MICOM. The control means is installed outside the storage tank (10). The control means is installed in the first chamber 12 and electrically connected to the sensor 71 for sensing the water level, and also electrically connected to the submersible pump 31 in accordance with the signal of the sensor 71 The operation of the submersible pump 31 is controlled. The sensor 71 is preferably installed to have the same height as the height of the dividing wall 11, and sends a signal to the control means when the level of the first chamber 12 reaches the height, the control means is Operate the submersible pump 31. For this reason, the automation of the said washing | cleaning apparatus 30 is implement | achieved.

As described above, according to the present invention, it is possible to greatly prevent pollution of rivers and the like, and to prevent degradation of the performance of the screen means, that is, the screen network, and to facilitate maintenance thereof.

Claims (6)

delete A hollow structure is provided in the interior of the sewage pipe so that only an upper surface thereof is exposed, and an inside thereof overflows the separation wall from the first chamber and the first chamber in communication with the sewage pipe with a separation wall therebetween. A storage tank partitioned with a second chamber for bypassing sewage to have an access cover installed thereon; A screen net body installed on the partition wall and positioned in the first chamber to screen contaminants flowing over the partition wall to filter contaminants; And It is installed in the first chamber and connected to the submersible pump for pumping and pumping the sewage in the first chamber, the submerged pump and the sewage from the submersible pump is connected to the submersible pump from the submersible pump Ejector (ejector) for removing contaminants on the screen net by spraying to the screen net, and is installed to be exposed to the water surface from the ejector to the air injection pipe for mixing air to the sewage by injecting air into the ejector Sewer storage tank overflow water screen device comprising a washing means made. According to claim 2, wherein the fixed plate body is further installed at a distance from the separation wall toward the first chamber, the screen net is characterized in that the separation between the fixed plate body and the separation wall in a semicircular shape is installed separately Sewer tank overflow screen device for sewerage. According to claim 2, wherein the screen mesh is made of stainless steel sewer tank overflow screen device, characterized in that the material. The method of claim 2, further comprising a control means installed in the first chamber and electrically connected to a sensor for sensing the water level, wherein the control means is electrically connected to the submersible pump according to the signal of the sensor Sewer storage tank overflow water screen device for controlling the operation of the submersible pump. delete

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