JPS5926015A - Detecting method of boundary surface of sludge in settling chamber - Google Patents
Detecting method of boundary surface of sludge in settling chamberInfo
- Publication number
- JPS5926015A JPS5926015A JP13532382A JP13532382A JPS5926015A JP S5926015 A JPS5926015 A JP S5926015A JP 13532382 A JP13532382 A JP 13532382A JP 13532382 A JP13532382 A JP 13532382A JP S5926015 A JPS5926015 A JP S5926015A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- boundary surface
- measure
- liquid
- settling chamber
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- 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
- G01F23/24—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 variations of resistance of resistors due to contact with conductor fluid
- G01F23/245—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 variations of resistance of resistors due to contact with conductor fluid with a probe moved by an auxiliary power, e.g. meter, to follow automatically the level
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は汚泥を沈降５″Ｊ離し清澄な溢流水と濃縮し
た汚泥を得る沈殿槽の汚泥界面検出方法に関するもので
ある。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for detecting a sludge interface in a settling tank by separating sludge by 5"J to obtain clear overflow water and concentrated sludge.
、この種の沈殿槽にお、いては、槽内の汚泥界面を検知
し、この汚泥界面を常に溢流水の水理的影響のないレベ
ル以下（こ維持させることにより最も清算な溢流水を連
続して得るようにされている。従来の汚泥界面の検出方
法としては次のようなものがある。In this type of sedimentation tank, the sludge interface inside the tank is detected, and this sludge interface is always kept below a level that does not have a hydraulic impact on overflow water. Conventional methods for detecting the sludge interface include the following.
■ 第１図に示すように、径６〜ｇ門の透明のザイフオ
ン１を人手により槽内の液体内に上方から挿入して行な
う方法。(2) As shown in FIG. 1, a transparent Zyfon 1 with a diameter of 6 to 10 g is manually inserted into the liquid in a tank from above.
■ 第２図に示すように、超音波を送受信しその時間を
測定する方法。■ As shown in Figure 2, a method of transmitting and receiving ultrasonic waves and measuring the time.
■ 第３図に示すＪ二うに、一対の投−）Ｙ；器２．２
：受光器３とを上下方向に多数配置しその透：Ｉへ度で
判定する方法。■ J two sea urchins shown in Figure 3, a pair of throws) Y; vessel 2.2
: A method in which a large number of light receivers 3 are arranged in the vertical direction and the transmission is determined in degrees.
しかしながら、■の場合、人手、足場等が必要であると
ともに測定に手間がかかる。■の場合には、濃い汚泥界
面を測定することができるが、？Ｌ１７い汚泥界面を測
定しにくい欠点がある。However, in the case of (2), manpower, scaffolding, etc. are required, and the measurement is time-consuming. ■ In the case of, it is possible to measure the thick sludge interface, but? L17 has the disadvantage that it is difficult to measure the sludge interface.
■の場合には、投光器および受光器の汚れにより感度が
変わり正確な測定ができない欠点がある。In case (2), there is a drawback that the sensitivity changes due to dirt on the emitter and receiver, making it impossible to make accurate measurements.
この発明は、このような事情に髄みて提案されたもので
、その月面は、汚泥〕７面を、正ｒ（１に測定し得る汚
泥界面検出方法に凹するものである。The present invention was proposed in consideration of the above circumstances, and the lunar surface is a sludge interface detection method that can measure the sludge surface to positive r(1).
この発明に係る汚泥打面検出方法（才、一対の電極間に
電圧を負荷して沈殿槽内の液体の可、気抵抗を測定する
ようにした検出器の前ｎ＋′２電極−一ンサを上下動さ
せ、その抵抗変化により正（ｉ（ａ、 ｓｙ汚泥界面を
検出するようにしたものである。A method for detecting a sludge striking surface according to the present invention (in which a voltage is applied between a pair of electrodes to measure the fluid resistance of the liquid in the sedimentation tank). It is designed to detect the positive (i(a, sy) sludge interface by moving it up and down and the change in resistance.
以下、この発明を図示する一実施例に基づいて説明する
。第４図に示すように、沈殿槽１０には汚泥水１１が供
給され、槽内に汚泥１２が沈降分離する。汚泥１２は汚
泥掻寄機１３によりＪＪｙ＆、寄せられポンプ１４によ
り糸外へ除去される。The present invention will be described below based on an illustrated embodiment. As shown in FIG. 4, sludge water 11 is supplied to the settling tank 10, and sludge 12 is sedimented and separated in the tank. The sludge 12 is collected by a sludge scraper 13 and removed to the outside of the thread by a pump 14.
このような構成の沈殿槽１０において、汚泥界面１５が
溢流水１６の水理的影響を受けないレベル以下となるよ
うに、汚泥界−・面１５を検出器１７により検出してポ
ンプ１４の運転を行なう。In the sedimentation tank 10 having such a configuration, the sludge interface 15 is detected by the detector 17 and the pump 14 is operated so that the sludge interface 15 is below a level that is not affected by the hydraulic influence of the overflow water 16. Do this.
検出器１７は、第５図に示すように間隙をおいて対設さ
れた一対のプラチナ電極１８．１８からなるセンサを有
し１．この電極間に電圧を負荷することにより槽内の液
体の電気抵抗を測定するとともにその抵抗変化により汚
泥界面１５を検出するよう（こ構成されている。一対の
？！ ＋ｉ１８．１８は開口を有するケース１９内に収
納され、その出力信号は指示Ｈ１２１、アナログ・デジ
タル変換器２２を経て中央処理装置２３へ送られる。こ
こで、測定するものは、電気抵控でもよいし、この逆数
のＴ（ｌ、 ＞！＄ ＩＸｕでもよい。The detector 17 has a sensor consisting of a pair of platinum electrodes 18, 18 arranged oppositely with a gap as shown in FIG. By applying a voltage between these electrodes, the electrical resistance of the liquid in the tank is measured, and the sludge interface 15 is detected based on the change in resistance. It is housed in a case 19, and its output signal is sent to the central processing unit 23 via an instruction H121 and an analog/digital converter 22.The thing to be measured here may be an electrical resistance, or its reciprocal T( l, >!$ IXu is also acceptable.
また、１托極セン−リ“は、ケーブル２４に吊下げられ
、ケーブルドラム２６および回転１１が接続された→ノ
ーーボモーク２５によって上−Ｆ’ １ＴｉＩＩされ、
回転Ｉｌｌにより水面からの距ｒ准が測ンｉ−される。In addition, one pole sensor is suspended from a cable 24, and connected to a cable drum 26 and a rotation 11.
The distance r from the water surface is measured by the rotation Ill.
、なお、２０はセンサの吊下を安定さけ−るための重ｉ
ｔカウンターである。, 20 is the weight i to avoid hanging the sensor stably.
It is a t counter.
さて、このような測定において、
■ 中央処理装置２３に急激な信号変化が入力された時
を汚泥界面とする。Now, in such a measurement, (1) The time when a sudden signal change is input to the central processing unit 23 is defined as the sludge interface.
■ サーボモータ２５を正逆で回転さ・已、そのヒステ
リシスから界面が戸、か否か判定する。(2) The servo motor 25 is rotated in forward and reverse directions, and it is determined from the hysteresis whether the interface is a door or not.
■ 界面が真ならば制御すべきｎ面高さになるようにポ
ンプへ運転指令を出す。■ If the interface is true, issue an operation command to the pump so that the n-plane height to be controlled is reached.
■ ポンプ停止後、再びセンサを上限まで戻°礼なお、
以上の実施例ではγＩＹ （ｉセン′りを−・つとした
が、同様の電極センサを二つ配ｌｉｄ、 Ｌ、一方は下
向きに、他方は上向きに移動させて、ヒステリシスを一
時にチェックするようにしでもよい。■ After stopping the pump, return the sensor to the upper limit again.
In the above embodiment, γIY (isen') was set as -, but two similar electrode sensors were arranged, one moving downward and the other upward, to check the hysteresis at the same time. You can do it.
前述のとおりこの発明によれば、比較曲部、ｒ）ｔなく
ｉ９成で迅速かつ正確に汚泥界面を測定することができ
、これにより沈殿槽の溢流水を最良のものとし汚泥の分
離回収量を最大のものとすることができる。As described above, according to the present invention, the sludge interface can be measured quickly and accurately with the i9 configuration without the comparative curved section, r)t, and thereby the overflow water of the settling tank can be used to optimize the amount of separated and recovered sludge. can be maximized.
第１図、第２図、第３図は従来の種々の界面検出方法を
示す概略図、第４図はこの発明に係る界面検出方法を実
施するだめの装置を示す概略図、第５図は同様の装置、
の′電極センサを示す概略図である。
１・・・す″イフオン、２・・投光器、３・・受う℃器
、１０・・沈殿 、′１１・・汚泥水、１２・・汚泥、
Ａ３・・汚泥ｆＩｒγＴ機、１４・・ポンプ、１５・寺
汚泥界面、１６・・溢流水、１７・・検出＝器、１Ｂ・
・電極、１９・・ケース。
２０・・カウンタ、２１・・指示Ｂ１°、２２・・アナ
ログ・デジタル変換器、２６・・中央処理装置、２４・
・ケーブル、２５・・サーボモータ、２６・・ケーブル
ドラム。FIGS. 1, 2, and 3 are schematic diagrams showing various conventional interface detection methods, FIG. 4 is a schematic diagram showing an apparatus for implementing the interface detection method according to the present invention, and FIG. similar equipment,
FIG. 2 is a schematic diagram showing the electrode sensor of FIG. 1...S''ifon, 2...Floodlight, 3...Receiving temperature chamber, 10...Sedimentation, '11...Sludge water, 12...Sludge,
A3...Sludge fIrγT machine, 14...Pump, 15.Temple sludge interface, 16.Overflow water, 17.Detection = device, 1B.
・Electrode, 19...Case. 20...Counter, 21...Instruction B1°, 22...Analog-to-digital converter, 26...Central processing unit, 24...
・Cable, 25... Servo motor, 26... Cable drum.
Claims (1)
電気抵抗を測定するようにした検出器の前記電極センサ
を上下動させ、その抵抗変化１こより汚泥界面を検出す
ることを特徴とする沈殿槽の汚泥界面検出方法。(11) The electrode sensor of the detector is adapted to measure the electrical resistance of the liquid in the settling tank by applying a voltage between a pair of electrodes, and the electrode sensor is moved up and down, and the sludge interface is detected from the change in resistance. A method for detecting the sludge interface in a settling tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13532382A JPS5926015A (en) | 1982-08-03 | 1982-08-03 | Detecting method of boundary surface of sludge in settling chamber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13532382A JPS5926015A (en) | 1982-08-03 | 1982-08-03 | Detecting method of boundary surface of sludge in settling chamber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5926015A true JPS5926015A (en) | 1984-02-10 |
Family
ID=15149066
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13532382A Pending JPS5926015A (en) | 1982-08-03 | 1982-08-03 | Detecting method of boundary surface of sludge in settling chamber |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5926015A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0767897A1 (en) * | 1994-06-29 | 1997-04-16 | Alcoa Of Australia Limited | Thickener mud gauge |
| JP2002154113A (en) * | 2000-09-08 | 2002-05-28 | Ohbayashi Corp | Apparatus for weighing water-immersed fine aggregate |
| CN115127966A (en) * | 2022-08-26 | 2022-09-30 | 北京博汇特环保科技股份有限公司 | Measuring device and measuring method for sludge sedimentation performance |
-
1982
- 1982-08-03 JP JP13532382A patent/JPS5926015A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0767897A1 (en) * | 1994-06-29 | 1997-04-16 | Alcoa Of Australia Limited | Thickener mud gauge |
| EP0767897A4 (en) * | 1994-06-29 | 1998-08-19 | Alcoa Australia | Thickener mud gauge |
| JP2002154113A (en) * | 2000-09-08 | 2002-05-28 | Ohbayashi Corp | Apparatus for weighing water-immersed fine aggregate |
| CN115127966A (en) * | 2022-08-26 | 2022-09-30 | 北京博汇特环保科技股份有限公司 | Measuring device and measuring method for sludge sedimentation performance |
| CN115127966B (en) * | 2022-08-26 | 2022-12-13 | 北京博汇特环保科技股份有限公司 | Measuring device and measuring method for sludge sedimentation performance |
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