KR20100009743A - Device for measuring interface of sludge - Google Patents

Device for measuring interface of sludge Download PDF

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Publication number
KR20100009743A
KR20100009743A KR1020080070506A KR20080070506A KR20100009743A KR 20100009743 A KR20100009743 A KR 20100009743A KR 1020080070506 A KR1020080070506 A KR 1020080070506A KR 20080070506 A KR20080070506 A KR 20080070506A KR 20100009743 A KR20100009743 A KR 20100009743A
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KR
South Korea
Prior art keywords
sludge
measuring unit
sedimentation basin
unit
measuring
Prior art date
Application number
KR1020080070506A
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Korean (ko)
Inventor
박진용
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박진용
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Priority to KR1020080070506A priority Critical patent/KR20100009743A/en
Publication of KR20100009743A publication Critical patent/KR20100009743A/en

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C13/00—Surveying specially adapted to open water, e.g. sea, lake, river or canal
    • G01C13/008—Surveying specially adapted to open water, e.g. sea, lake, river or canal measuring depth of open water
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
    • G01F23/28—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring the variations of parameters of electromagnetic or acoustic waves applied directly to the liquid or fluent solid material
    • G01F23/284—Electromagnetic waves
    • G01F23/292—Light, e.g. infrared or ultraviolet
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
    • G01V8/00—Prospecting or detecting by optical means
    • G01V8/10—Detecting, e.g. by using light barriers
    • G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Engineering & Computer Science (AREA)
  • Hydrology & Water Resources (AREA)
  • Thermal Sciences (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Investigating Or Analysing Materials By Optical Means (AREA)

Abstract

The present invention relates to a sludge interface measuring device that can measure the depth of the sludge layer accumulated in the sedimentation basin of the water treatment plant, such as sewage treatment plant, wastewater treatment plant and water purification plant, the water is submerged on one side of the sedimentation basin to the optical signal A sludge measuring unit for detecting and converting the electrical signal into an electrical signal, outputting the sludge measuring unit, a control unit for comparing and controlling the electrical signal output from the sludge measuring unit, and a display unit for outputting the signal controlled by the control unit on a screen It is made, it is characterized in that the horizontal moving portion is installed on one side of the inner wall surface of the sedimentation basin can move the sludge measuring unit in the horizontal direction.

Accordingly, the sludge measuring unit is provided with a horizontal moving unit capable of moving in the horizontal direction to the left and right, there is an advantage that can accurately measure the overall height and amount of the sludge irregularly accumulated in the sedimentation basin.

Description

Sludge Interface Measuring Equipment {DEVICE FOR MEASURING INTERFACE OF SLUDGE}

The present invention relates to a sludge interface measuring apparatus, and more particularly, to a sludge interface measuring apparatus capable of measuring the depth of the sludge layer accumulated in the sedimentation basin of the water treatment plant, such as sewage treatment plants, wastewater treatment plants and water purification plants.

In general, when treating sewage, wastewater, or tap water, the sedimentation process takes place. As a result, sludge is inevitably generated in the sedimentation basin, and the sludge is physically treated by chemical treatment such as filtration, sedimentation, and neutralization. It is processed through chemical methods.

Wastewater treatment aims to separate insoluble substances from water.The treatment method is to remove the suspended solids contained in the wastewater coming from general households or industrial sites, and then add chemicals to the wastewater from which the suspended solids are removed. By separating the foreign matter and water, the sludge, which is a separated foreign material, is settled in the sedimentation basin, and the water is purified again through the secondary sedimentation basin or filter paper, and then discharged to the stream.

Then, when a certain amount of sludge is accumulated in the sedimentation basin of the sewage and wastewater treatment plant, the sludge removal apparatus is used to remove the sludge. The removal of sludge is measured after the depth of the sludge layer is removed so that sludge can be removed before a certain thickness of sludge is accumulated for smooth operation of sewage, waste water and water treatment plants and good wastewater treatment.

However, if the height of the sludge accumulated in the sedimentation basin is not accurately measured, the sludge cannot be processed in a timely manner, which leads to the increase of the flotation sludge which floats from the lower part of the sedimentation basin due to the decay of the sediment sludge, which delays the wastewater treatment time. Sediment sludge can flow out with the treated water.

In order to solve the above problems, various types of sludge interface measuring apparatuses have been proposed, which will be described below with reference to the accompanying drawings.

1 is a configuration diagram of a sludge meter using a conventional photofiber.

Referring to FIG. 1, a sludge meter using a conventional photofiber is provided with a rod-shaped body portion 2 and a plurality of sludges disposed at predetermined intervals on an inner side of the body portion 2 to emit an optical signal. A plurality of light emitters 4 and a plurality of straight lines are disposed at a predetermined interval so as to correspond 1: 1 with the light emitters 4 on a horizontal line to receive the optical signals of the light emitters 4 and output them as electrical signals. A control unit 8 for comparing and controlling the light receiving unit 6, an electrical signal output from the light receiving unit 6, and a display unit 9 for outputting a signal controlled by the control unit 8 on a screen; It is made, including.

As described above, the sludge meter using the conventional photofiber can accurately measure the height of the sludge 200 hygienically without a separate manual operation, and the light emitting part 4 and the light receiving part 6 are in the main body part 2. Since it is disposed, there was an advantage to prevent the contamination of the sensor.

However, the sludge meter using the conventional photofiber is fixedly installed at one side of the sedimentation basin 100 of the water treatment plant, so that the measurement site of the sludge 200 deposited in the sedimentation basin 100 is limited to a part, and thus is irregularly stacked in the sedimentation basin 100. There was a problem that the height and amount of the sludge 200 can not be measured accurately as a whole.

In addition, the photofibers used as the light emitting part 4 and the light receiving part 6 have a problem in that the allowable bending radius is limited to 40 to 60 °, resulting in a large volume at the time of manufacturing in the form of a bar. Due to this, there was a problem that it is difficult to install in the bent portion in the water treatment plant.

In addition, there is a device capable of measuring the depth of the sludge using other methods as well as the measuring device of the above method, ultrasonic sludge interface measuring device, near infrared type sludge interface measuring device, laser type sludge interface device Although various types of devices have been proposed, such as check valve measuring tube type sludge interface devices, they are rarely used in actual operation due to various problems.

The ultrasonic sludge interface measuring device uses ultrasonic waves, so it is easy to attach without being affected by conductivity, color, pH, etc., but the ultrasonic transmitting / receiving sensor part is easily obtained, so that the sensor part is easily contaminated by sludge and requires sophisticated electronic equipment. There was a costly problem.

In addition, the near-infrared sludge interface measuring device and the laser-type sludge interface measuring device also have a problem that the sensor part is easily contaminated by sludge since the sensor part is obtained like the ultrasonic method.

The sludge interface device of the check valve measuring tube method opens the check valve of the measuring tube equipped with the check valve and lowers it to the sedimentation basin. Since the method of checking the sludge with the naked eye, there was a problem that can not accurately determine the height and amount of the sludge.

In order to solve the above problems, it is an object of the present invention to provide a sludge interface measuring apparatus that can accurately measure the overall height and amount of the sludge accumulated irregularly in the sedimentation basin.

Another object of the present invention is to minimize the volume of the sludge interface measuring apparatus, and to provide a sludge interface measuring apparatus that can be easily installed in the sludge interface measuring apparatus in the water treatment plant.

In order to achieve the above object, the sludge interface measuring apparatus of the present invention, the sludge measuring unit which is submerged on one side in the sedimentation basin to detect the depth of the sludge layer as an optical signal and converts it into an electrical signal and outputs the sludge; Comprising a control unit for comparing and controlling the electrical signal output from the measuring unit, and a display unit for outputting the signal controlled by the control unit on the screen, one side of the inner wall surface of the sedimentation basin is provided with a horizontal moving unit Characterized in that the measuring unit can be moved in the horizontal direction.

The sludge measuring unit has a ladder-shaped body, a plurality of light emitting diodes arranged in a straight line at a predetermined interval on one side of the body, and a predetermined interval so as to correspond 1: 1 with the light emitting diode on a horizontal line. It characterized in that it comprises a photoconductive cell which is arranged in plurality in a straight line, and the non-shielded twisted pair electrically connecting the light emitting diode and the photoconductive cell.

And, the body of the sludge measuring unit is characterized in that it is formed of a flexible synthetic resin.

And, the horizontal moving unit is installed on one side wall in the sedimentation basin moving means for moving the sludge measuring unit to the left and right, power supply means for physically connected to the moving means to supply power, installed on one side of the moving means It characterized in that it comprises a support means for supporting the sludge measuring unit.

And, the support means is characterized in that the slot shape to facilitate the detachment of the sludge measuring unit.

The sludge interface measuring apparatus of the present invention configured and acting as described above has a horizontal moving part capable of moving the sludge measuring part in the horizontal direction, so that the overall height and amount of the sludge accumulated irregularly in the sedimentation basin can be measured accurately. There is an advantage.

In addition, the light emitting diode and the photoconductive cell of the sludge measuring unit have an advantage of minimizing the volume of the product because the electrical connection is made to the unshielded twisted pair without restrictions such as the allowable bending radius.

In addition, since the body of the sludge measuring unit is formed of a flexible synthetic resin, there is an advantage that the sludge interface measuring device can be easily installed in the bent portion in the water treatment plant.

In addition, the slot-shaped support means installed on one side of the moving means facilitates the detachment of the sludge measuring unit has the advantage of maintaining the performance of the product for a long time by easily separating and managing.

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

Note that even though the reference numerals are shown in different drawings, the same reference numerals are used to denote the same components.

In addition, it will be apparent to those skilled in the art that the present invention may be practiced without detailed description of specific matters such as specific circuit elements in the following description.

Figure 2 is a schematic view (a) of the sludge interface measuring apparatus according to the present invention and a side view (b) of the sludge measuring unit provided in the bent portion of the sedimentation basin.

3 is an operation conceptual diagram showing a sludge measuring method of the sludge interface measuring apparatus according to the present invention.

Figure 4 is a perspective view and a side view of the sludge measuring unit detachable to the support means of the sludge interface measuring apparatus according to the present invention.

5 is a perspective view illustrating a horizontal moving part of the sludge interface measuring apparatus according to the present invention.

Referring to the accompanying drawings, the sludge interface measuring apparatus of the present invention is largely submerged in one side in the sedimentation basin 100, the sludge measuring unit for detecting the depth of the sludge 200 layer as an optical signal and converts into an electrical signal and outputs ( 20), the control unit 60 for comparing and controlling the electrical signal output from the sludge measuring unit 20 and the display unit 80 for outputting the signal controlled by the control unit 60 on the screen; It is made, but the horizontal moving portion 40 is installed on one side of the inner wall surface of the sedimentation basin 100 is characterized in that the sludge measuring unit 20 can be moved in the horizontal direction.

The sludge measuring unit 20 has a ladder-shaped body 22, a plurality of light emitting diodes 24 are arranged in a straight line at a predetermined interval on the inner side of the body 22, the light emitting diodes 24 and A plurality of photoconductive cells 26 are arranged in a straight line at a predetermined interval so as to correspond 1: 1 on a horizontal line, and an unshielded twisted pair wire 28 electrically connecting the light emitting diodes 24 and the photoconductive cells 26 to each other. )

As mentioned above, the body 22 is preferably formed in a ladder shape, because the sludge 200 can be prevented from being deposited on the body 22 while minimizing the flow rate resistance of the sludge 200. Therefore, when the sludge measuring unit 20 is horizontally moved left and right by the horizontal moving unit 40, the sludge 200 passes between the light emitting diodes 24 and the photoconductive cell 26 so that the sludge measuring unit 20 Since it is not deposited on the body 22 of (20), it is possible to more accurately measure the overall amount of sludge 200 in the sedimentation basin 100.

In addition, the body 22 is preferably formed of a flexible synthetic resin, because the sludge interface measuring device can be easily installed without being restricted by the structure of the place, such as bending in the water treatment plant, heat resistance, cold resistance, such as silicon Of course, a synthetic resin having various properties such as insulation, chemical stability, abrasion resistance, glossiness, and abundant elasticity may be appropriately selected by those skilled in the art.

The light emitting diode 24 refers to a semiconductor device that emits light (visible light), and consumes more than 50,000 hours of semi-permanent lifespan and low power, thereby significantly reducing maintenance costs after installation.

The photoconductor cell 26 has a characteristic that current does not flow like an insulator in a dark place without light (visible light), and current flows like a conductor when the visible light touches.

As described above, the height of the sludge 100 deposited in the sedimentation basin 100 can be accurately measured by using the principle of the light emitting diodes 24 and the photoconductive cell 26. In the part where the sludge 200 is deposited, Since the visible light emitted from the light emitting diodes 24 does not reach the photoconductive cell 26, no current flows in the photoconductive cell 26 in the portion where the sludge 200 is deposited, and the sludge 200 In the non-deposited portion, visible light emitted from the light emitting diodes 24 is brought into contact with the photoconductive cell 26, and thus the conduction state of the photoconductive cell 26 is distinguished. It is possible to accurately measure the interface of the sludge 200 deposited in the inside.

The unshielded twisted pair wire (28, UTP) is a stranded wire that does not enclose a sheath of conductive material so as to block an influence from an electric field or a magnetic field induced in an external electric field, a magnetic field or another transmission line. It is used as a transmission medium of an ordinary premises telephone line or premises information communication network (LAN), and there is no restriction in allowable bending radius, etc., so that the volume of the sludge interface measuring apparatus of the present invention can be minimized.

In addition, since each component of the sludge measuring unit 20 described above is much cheaper than the equipment such as a photo fiber sensor, an ultrasonic sensor, etc. used in the conventional sludge interface measuring apparatus, a large number of sludge interface measuring apparatuses of the present invention are manufactured. You can save money.

Horizontal moving unit 40 is installed on one side wall in the sedimentation basin 100, the moving means 42 for moving the sludge measuring unit 20 to the left and right, and is physically connected to the moving means 42 to supply power It comprises a power supply means 44 and the support means 46 is installed on one side of the moving means 42 to support the sludge measuring unit 20.

Referring to FIG. 5, the moving means 42 and the power supply means 44 are installed on one side of the moving means 42 by using a motor as a power supply means 44 in a gear belt that is the moving means 42. It can be seen that the support means 46 can be moved left and right. Other methods are appropriately selected by those skilled in the art, such as using a ball screw and a motor with reverse rotation, using a pneumatic cylinder, using a motor and pulley wire rope like an automatic door, and using a rack gear and pinion. Each method described above is well understood by those skilled in the art, and thus detailed descriptions thereof will be omitted.

The support means 46 is preferably a slot shape that can facilitate the detachment of the sludge measuring unit 20, which is in the horizontal moving part 40 which is mounted on one side of the inner wall of the sedimentation basin 100 This is because the sludge measurement unit 20 can be easily separated and managed at any time to maintain product performance for a long time.

In addition, the support means 46 is preferably formed in a ladder shape like the sludge measuring unit 20, which is described above to minimize the flow rate resistance of the sludge 200, the sludge 200 is the sludge This is because deposition on the body 22 of the measuring unit 20 can be prevented.

Accordingly, when the sludge measuring unit 20 horizontally moves from side to side by the horizontal moving unit 40, the sludge 200 passes through the light emitting diode 24 and the photoconductive cell 26 so that the sludge measurement is performed. Since it is not deposited on the body 22 of the part 20, the total amount of sludge 200 in the settling basin 100 can be measured more accurately.

Since the control unit 60 and the display unit 80 correspond to general known techniques, detailed description thereof will be omitted.

The foregoing has outlined rather broadly the features and technical advantages of the present invention in order that the claims of the invention that follow may be better understood. It should be recognized by those skilled in the art that the above-described concepts and specific embodiments of the present invention can be used immediately as a basis for designing or modifying other structures for carrying out similar objects to the present invention.

In addition, the above-described embodiment is only one embodiment according to the present invention, and various modifications and changes may be made by those skilled in the art within the scope of the technical idea of the present invention. Such various modifications and changes will also fall within the scope of the present invention as set forth below within the scope of the spirit of the present invention.

1 is a configuration diagram of a sludge meter using a conventional photofiber.

Figure 2 is a schematic view (a) of the sludge interface measuring apparatus according to the present invention and a side view (b) of the sludge measuring unit provided in the bent portion of the sedimentation basin.

3 is an operation conceptual view showing a sludge measuring method of the sludge interface measuring apparatus according to the present invention.

Figure 4 is a perspective view and a side view of the sludge measuring unit detachable to the support means of the sludge interface measuring apparatus according to the present invention.

5 is a perspective view showing a horizontal moving portion of the sludge interface measuring apparatus according to the present invention.

* Description of the symbols for the main parts of the drawings *

2: body portion 4: light emitting portion

6: light-receiving part 8: control part

9: interface

20: sludge measuring unit 22: body

24: light emitting diode 26: photoconductive cell

28: Unshielded twisted pair

40: horizontal moving part 42: moving means

44: power supply means 46: support means

60: control unit 80: interface unit

100: sedimentation basin 200: sludge

P: power supply

Claims (5)

In the sludge interface measuring apparatus that can measure the depth of the sludge layer 200 accumulated in the sedimentation basin 100 of the water treatment plant, A sludge measuring unit 20 submerged at one side in the sedimentation basin 100 to detect the depth of the sludge 200 layer as an optical signal, and convert the sludge 200 into an electrical signal and output the converted signal; A controller (60) for comparing and controlling the electrical signals output from the sludge measuring unit (20); And And a display unit 80 for outputting the signal controlled by the controller 60 on the screen. Sludge interface measuring device, characterized in that the horizontal moving part 40 is installed on one side of the inner wall surface of the sedimentation basin 100 to move the sludge measuring part 20 in the horizontal direction. The method of claim 1, The sludge measuring unit 20 A ladder-shaped body 22, Light emitting diodes 24 are arranged in a plurality of straight line at a predetermined interval on the inner side of the body 22, and A plurality of photoconductive cells 26 arranged in a straight line at predetermined intervals so as to correspond to the light emitting diodes 24 on a horizontal line 1: 1; Sludge interface measuring apparatus comprising a non-shielded twisted pair (28) for electrically connecting the light emitting diodes (24) and the photoconductive cell (26). The method of claim 2, The sludge interface measuring apparatus of claim 2, wherein the body 22 of the sludge measuring unit 20 is formed of a flexible synthetic resin. The method of claim 1, The horizontal moving unit 40 A moving means 42 installed on one side wall in the sedimentation basin 100 to move the sludge measuring unit 20 from side to side; A power supply means 44 that is physically connected to the moving means 42 to supply power; Sludge interface measuring device, characterized in that it comprises a support means 46 installed on one side of the moving means 42 for supporting the sludge measuring unit (20). The method of claim 4, wherein The support means 46 is a sludge interface measuring apparatus, characterized in that the slot shape to facilitate the detachment of the sludge measuring unit (20).
KR1020080070506A 2008-07-21 2008-07-21 Device for measuring interface of sludge KR20100009743A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272274B1 (en) * 2013-04-09 2013-06-13 (주)대신피아이씨 Water purifing system for management of sludge blanket level
CN112243490A (en) * 2018-05-03 2021-01-19 耐普罗公司 Apparatus, system, and method for providing a solids level monitor
US11982557B2 (en) * 2022-09-23 2024-05-14 Nypro Inc. Apparatus, system, and method of providing a solids level monitor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101272274B1 (en) * 2013-04-09 2013-06-13 (주)대신피아이씨 Water purifing system for management of sludge blanket level
CN112243490A (en) * 2018-05-03 2021-01-19 耐普罗公司 Apparatus, system, and method for providing a solids level monitor
US11982557B2 (en) * 2022-09-23 2024-05-14 Nypro Inc. Apparatus, system, and method of providing a solids level monitor
US11982558B2 (en) 2022-09-23 2024-05-14 Nypro Inc. Apparatus, system, and method of providing a content level monitor

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