JPH01105121A - Sludge sedimentation interface detector - Google Patents
Sludge sedimentation interface detectorInfo
- Publication number
- JPH01105121A JPH01105121A JP15828987A JP15828987A JPH01105121A JP H01105121 A JPH01105121 A JP H01105121A JP 15828987 A JP15828987 A JP 15828987A JP 15828987 A JP15828987 A JP 15828987A JP H01105121 A JPH01105121 A JP H01105121A
- Authority
- JP
- Japan
- Prior art keywords
- water
- sludge
- supernatant liquid
- light receiving
- light
- 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
- 239000010802 sludge Substances 0.000 title claims abstract description 26
- 238000004062 sedimentation Methods 0.000 title claims description 6
- 230000005540 biological transmission Effects 0.000 claims abstract description 5
- 230000003287 optical effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 35
- 239000006228 supernatant Substances 0.000 abstract description 16
- 238000005273 aeration Methods 0.000 abstract description 10
- 239000010865 sewage Substances 0.000 abstract description 8
- 238000007599 discharging Methods 0.000 abstract description 7
- 238000004140 cleaning Methods 0.000 abstract description 6
- 239000007788 liquid Substances 0.000 abstract description 6
- 230000007423 decrease Effects 0.000 abstract description 2
- 238000004401 flow injection analysis Methods 0.000 abstract 1
- 238000013517 stratification Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 241000195493 Cryptophyta Species 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野〕
本発明は、汚水処理槽内における上面水制御を自動的に
行わせ、また、間欠曝気の自動的時間制御を行わせるた
めに使用される、汚泥沈降界面検出器に関するものであ
る。Detailed Description of the Invention (Industrial Field of Application) The present invention is used to automatically control top water in a sewage treatment tank and to automatically control time of intermittent aeration. , concerning a sludge settling interface detector.
排水の生物処理、とシわけ懸濁態の微生物フロックを用
いる処理方式では、汚泥を沈澱させたのち、上澄水を懸
濁態の汚泥から完全に分離することが必要である。特に
有機物分解と共に脱窒を目的とする場合は、汚泥の沈降
速度が遅いため、上置水の放流中に汚泥の一部を巻込み
易い。In the biological treatment of wastewater, a treatment method that uses suspended microbial flocs, it is necessary to completely separate supernatant water from the suspended sludge after settling the sludge. Particularly when the purpose is denitrification as well as organic matter decomposition, the sedimentation rate of the sludge is slow, so part of the sludge is likely to be dragged in during the discharge of overlying water.
また、間欠曝気における曝気時間と非曝気時間を増減し
て排水中の窒素を高率に除去するという方法は、特公昭
５６−５３４３５号公報（発明者三橋 薫ほか１名）に
より公知であシ、それを実際に行わせるための装置も特
願唱６２−３１９８３号（発明者 三橋 薫）として既
に特許出願がなされているが、更に解決しなければなら
ない問題として、元センサーの投光面訃よび受光面に耐
着する汚泥や藻類により検知機能の損われるということ
がある。Furthermore, a method of removing nitrogen from wastewater at a high rate by increasing or decreasing the aeration time and non-aeration time in intermittent aeration is known from Japanese Patent Publication No. 56-53435 (inventor: Kaoru Mitsuhashi and one other person). A patent application has already been filed for a device to actually do this as Patent Application No. 62-31983 (inventor: Kaoru Mitsuhashi), but there is another problem that needs to be solved: the failure of the original sensor's light emitting surface. Also, the detection function may be impaired by sludge and algae that adhere to the light receiving surface.
本発明の目的は、上置水の放流中に汚泥を巻込むことの
ないよう沈降界面検出によって上澄水の放流制御を自動
的に行わせて処理水の水質保証が得られ、また、汚水処
理槽内にｉける間欠曝気の自動的時間制御にも利用し得
られる汚泥沈降界面検出器であって、しかもその検出機
能が投・受光面への汚泥や藻類の階層によって影響され
ることのないよう改良せられた汚泥沈降界面検出器を提
供することになる。The purpose of the present invention is to automatically control the discharge of supernatant water by detecting the sedimentation interface so as to prevent sludge from being involved during the discharge of overlying water, and to guarantee the quality of treated water. This is a sludge settling interface detector that can also be used for automatic time control of intermittent aeration in a tank, and its detection function is not affected by the layer of sludge or algae on the light emitting/receiving surface. Thus, an improved sludge settling interface detector is provided.
本発明に係る汚泥沈降界面検出器では、汚水処理槽内へ
導子された支持体に、投光面と受光面が槽内液を介して
所定の間際により対向するよう透過型光センサーの感知
部を配設し、汚泥界面が光センサー感知部の配設位置を
通過することによって生ずる透過光の増大を検出するよ
う構成せられた汚泥沈降界面検出器において、槽内水ま
たは槽外水を水源とする水流噴射の行われる洗浄用ノズ
ルを投光面および受光面へ向けて開口させたのである。In the sludge sedimentation interface detector according to the present invention, a transmission type optical sensor is mounted on a support introduced into a sewage treatment tank so that a light emitting surface and a light receiving surface face each other at a predetermined distance across the tank liquid. In the sludge settling interface detector, which is configured to detect an increase in transmitted light caused by the sludge interface passing through the position where the optical sensor is disposed, The cleaning nozzle, which serves as a water source and emits a water jet, is opened toward the light-emitting surface and the light-receiving surface.
実施例の図面に＄いて、１は汚水処理槽、２は汚水処理
槽１内へ導入された曝気装置、３は汚水処理槽ｌ内に浮
設せられたフロート４により支持されている上澄水放流
ポンプであって、図面にはポンプによる強制吸込方式の
ものが例示されているが、弁開閉による自然流下方式で
あってもよく、要はフロート４の浮力によって槽内水位
の増減変化に関係なく吸込口５が常に水面下の適切な深
度に位置するように調整されておればよい。６はフロー
）４に支持されて伸Ｎｌ！１１ｍ可能な構造で垂設され
た支持体、７は槽内液を介して投光面７ａと受光面７ｂ
が所定の間隔で対向するよう支持体６の下方部に配設さ
せることによ）構成される透過型光センサーＳの感知部
であシ、支持体６の導下長を増減することによって水面
下くおける設定深度を任意に変更調節し得るのである。In the drawings of the embodiment, 1 is a sewage treatment tank, 2 is an aeration device introduced into the sewage treatment tank 1, and 3 is supernatant water supported by a float 4 floating in the sewage treatment tank 1. The discharge pump is an example of a forced suction type using a pump, but it may also be a natural flow type using a valve opening/closing; It is only necessary that the suction port 5 be adjusted so that it is always located at an appropriate depth below the water surface. 6 is supported by flow) 4 and expands! A support 7 is vertically installed with a structure that can extend up to 11 m, and 7 connects a light emitting surface 7a and a light receiving surface 7b through the liquid in the tank.
The sensing part of the transmissive optical sensor S is constructed by disposing the lower parts of the support body 6 so as to face each other at a predetermined interval. The lower setting depth can be changed and adjusted as desired.
８は投光面７ａおよび受光面７ｂへ向けて開口せられた
洗浄用ノズμで、！１シ、槽内水または槽外水を水源と
する水流によって投光面７ａおよび受光面７ｂの汚れや
附着物を除去するのである。8 is a cleaning nozzle μ opened toward the light emitting surface 7a and the light receiving surface 7b. First, dirt and deposits on the light emitting surface 7a and the light receiving surface 7b are removed by a water stream sourced from the water inside the tank or the water outside the tank.
曝気処理後における上び水の放流制御に供せしめるにつ
いては、汚泥沈降界面ｔ２の下降により上澄水の層性が
予じめ設定せられた所定値に増大せしめられた時点で上
澄水放流装置３を作動させ、該上澄水放流装置３の作動
により上飛水の層性が予じめ設定せられた所定値に減少
した時点で上澄水放流装置３の作動を一時停止させ、汚
泥沈降界面ｔ２が更に下降したことを検出したのち一定
時間 。In order to control the discharge of the supernatant water after the aeration process, the supernatant water discharging device 3 The operation of the supernatant water discharging device 3 is temporarily stopped when the stratification of the supernatant water decreases to a predetermined value by the operation of the supernatant water discharging device 3, and the operation of the supernatant water discharging device 3 is temporarily stopped. for a certain period of time after detecting that the temperature has fallen further.
を経過して上澄水の層性が所定値に増大回復するまで上
澄水放流装Ｒ３の作動停止を継続するよう、電気的に接
続せられた放流制御回路を構成しておくのである。An electrically connected discharge control circuit is configured to continue stopping the operation of the supernatant water discharging device R3 until the stratification of the supernatant water increases and recovers to a predetermined value after this period.
本発明検出器の電気回路を放流制御回路から曝気制御回
路に切換えれば、特［＠６２−３１９８３号における間
欠曝気の自動時間制御装置にも利用できる。If the electric circuit of the detector of the present invention is switched from a discharge control circuit to an aeration control circuit, it can also be used for an automatic time control device for intermittent aeration as disclosed in Special Patent No. 62-31983.
本発明検出器によれば、上澄水の層性が十分に深くて汚
泥巻込みのおそれがない状態でのみ上置水の放流が行わ
れ、上置水の層性が浅くて汚泥巻込みの危惧される一状
態では自動的に放流を中止することになるので、汚泥の
巻込事故は未然に防止できて処理水の水質保証が得られ
るという利点がある。また、況浄用ノズｆｉ／８によっ
て投光面７ａおよび受光面７ｂの汚れや附着物を除去す
ることにより、誤動作のない正確な界面検出機能が保持
されるのである。According to the detector of the present invention, the overflow water is discharged only when the stratification of the supernatant water is deep enough and there is no risk of sludge entrainment, and the overflow water is discharged only when the stratification of the overflow water is shallow and there is no risk of sludge entrainment. Since discharge is automatically stopped in the event of a dangerous situation, there is an advantage that sludge entrainment accidents can be prevented and the quality of treated water can be guaranteed. Further, by removing dirt and adhering substances from the light emitting surface 7a and the light receiving surface 7b using the cleaning nozzle fi/8, an accurate interface detection function without malfunction is maintained.
図面は本発明汚泥沈降界面検出器を装備した汚水処理槽
の縦断側面図である。
１・・・・・・汚水処理槽、６−−−−−・支持体、７
−−−−−・感知部、７ ａ−＝投光面、７ｂ・・・・
・・受光面、８・・・・・・洗浄用ノズ〃、Ｓ・・・・
・・透過型光センサー、ｔ２−・・・汚泥界面。
特許出願人 株式会社鶴見製作所The drawing is a longitudinal sectional side view of a sewage treatment tank equipped with the sludge sedimentation interface detector of the present invention. 1...Sewage treatment tank, 6----Support, 7
------Sensing section, 7a-=light projection surface, 7b...
... Light-receiving surface, 8... Cleaning nozzle, S...
...Transmission type optical sensor, t2-...Sludge interface. Patent applicant: Tsurumi Seisakusho Co., Ltd.
Claims (1)
面（７ａ）と受光面（７ｂ）が槽内液を介して所定の間
隔により対向するよう透過型光センサー（Ｓ）の感知部
を配設し、汚泥界面（ｌ２）が光センサー感知部（７）
の配設位置を通過することによつて生ずる透過光の増大
を検出するよう構成せられた汚泥沈降界面検出器におい
て、槽内水または槽外水を水源とする水流噴射の行われ
る洗浄用ノズル（８）を投光面（７ａ）および受光面（
７ｂ）へ向けて開口させたことを特徴とする汚泥沈降界
面検出器。A transmission type optical sensor ( The sensing part of S) is arranged, and the sludge interface (l2) is the light sensor sensing part (7).
In the sludge settling interface detector configured to detect an increase in transmitted light caused by passing through the installation position of (8) to the light emitting surface (7a) and the light receiving surface (
7b) A sludge sedimentation interface detector characterized in that it is opened toward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15828987A JPH01105121A (en) | 1987-06-24 | 1987-06-24 | Sludge sedimentation interface detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15828987A JPH01105121A (en) | 1987-06-24 | 1987-06-24 | Sludge sedimentation interface detector |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9234987A Division JPS63256825A (en) | 1987-04-14 | 1987-04-14 | Sludge sedimentation boundary detector |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26107987A Division JPS63285227A (en) | 1987-10-15 | 1987-10-15 | Vertical shaft type engine generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01105121A true JPH01105121A (en) | 1989-04-21 |
Family
ID=15668346
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15828987A Pending JPH01105121A (en) | 1987-06-24 | 1987-06-24 | Sludge sedimentation interface detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01105121A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0564715U (en) * | 1991-12-09 | 1993-08-27 | 株式会社カイジョー | Transducer / receiver for interface measurement of suspended foreign matter and interface measuring device equipped with the transceiver |
| WO2022209429A1 (en) * | 2021-03-31 | 2022-10-06 | ダイキン工業株式会社 | Oil concentration detection system |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5549527A (en) * | 1978-10-03 | 1980-04-10 | Mazda Motor Corp | Rotor for rotary piston engine |
| JPS5623443B2 (en) * | 1975-02-26 | 1981-05-30 | ||
| JPS61204014A (en) * | 1985-03-08 | 1986-09-10 | Suido Kiko Kk | Method and device for intaking supernatant water |
-
1987
- 1987-06-24 JP JP15828987A patent/JPH01105121A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5623443B2 (en) * | 1975-02-26 | 1981-05-30 | ||
| JPS5549527A (en) * | 1978-10-03 | 1980-04-10 | Mazda Motor Corp | Rotor for rotary piston engine |
| JPS61204014A (en) * | 1985-03-08 | 1986-09-10 | Suido Kiko Kk | Method and device for intaking supernatant water |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0564715U (en) * | 1991-12-09 | 1993-08-27 | 株式会社カイジョー | Transducer / receiver for interface measurement of suspended foreign matter and interface measuring device equipped with the transceiver |
| WO2022209429A1 (en) * | 2021-03-31 | 2022-10-06 | ダイキン工業株式会社 | Oil concentration detection system |
| JP2022156740A (en) * | 2021-03-31 | 2022-10-14 | ダイキン工業株式会社 | Oil concentration detection system |
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