JPH0240295A - Apparatus for controlling activated sludge - Google Patents
Apparatus for controlling activated sludgeInfo
- Publication number
- JPH0240295A JPH0240295A JP63188468A JP18846888A JPH0240295A JP H0240295 A JPH0240295 A JP H0240295A JP 63188468 A JP63188468 A JP 63188468A JP 18846888 A JP18846888 A JP 18846888A JP H0240295 A JPH0240295 A JP H0240295A
- Authority
- JP
- Japan
- Prior art keywords
- activated sludge
- sludge
- aeration
- amt
- air
- 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 49
- 238000005273 aeration Methods 0.000 claims abstract description 19
- 239000010865 sewage Substances 0.000 claims abstract description 14
- 239000002245 particle Substances 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 3
- 229910052760 oxygen Inorganic materials 0.000 abstract description 3
- 239000001301 oxygen Substances 0.000 abstract description 3
- 238000004062 sedimentation Methods 0.000 abstract description 3
- 238000000354 decomposition reaction Methods 0.000 abstract description 2
- 238000010298 pulverizing process Methods 0.000 abstract 2
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 230000001276 controlling effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 230000006378 damage Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 238000013467 fragmentation Methods 0.000 description 2
- 238000006062 fragmentation reaction Methods 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、下水処理制御装置に係り、特に、活性汚泥の
破壊を招く過曝気を防止するに好適な活性汚泥制御装置
に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a sewage treatment control device, and particularly to an activated sludge control device suitable for preventing over-aeration that leads to destruction of activated sludge.
従来の装置は、特開昭６０−３１８８７号に記載の様に
、画像処理装置を浄水場に適用し、フロック粒径の判断
を実施していたが、下水処理への適用に関しては配慮さ
れていなかった。As described in Japanese Patent Application Laid-open No. 60-31887, conventional equipment has applied image processing equipment to water purification plants to determine the floc particle size, but no consideration has been given to its application to sewage treatment. There wasn't.
上記従来の技術は１画像処理装置を浄水場のフロック粒
径の判断に利用されているのみであり。In the above-mentioned conventional technology, only one image processing device is used for determining the floc particle size in a water treatment plant.
下水処理への適用については配慮されていなかった。No consideration was given to application to sewage treatment.
本発明の目的は、画像処理装置を下水処理場の活性汚泥
粒径の判断に利用し、過曝気による活性汚泥の破壊を防
止し、良好な下水処理を実施することにある。An object of the present invention is to utilize an image processing device to determine the particle size of activated sludge in a sewage treatment plant, to prevent destruction of activated sludge due to overaeration, and to implement good sewage treatment.
上記目的は、画像処理装置を下水処理場に適用し活性汚
泥の粒径を計測し、過曝気状態か否かの判断を実施し、
過曝気状態と判断された場合、送風量を最低限に絞る等
の制御を実行する制御装置を組込む事により、活性汚泥
の破壊を防止し、良好な下水処理が達成される。The above purpose is to apply an image processing device to a sewage treatment plant, measure the particle size of activated sludge, and determine whether or not it is in an overaerated state.
By incorporating a control device that performs controls such as reducing the air flow to the minimum level when it is determined that an overaerated state is present, destruction of activated sludge is prevented and good sewage treatment is achieved.
画像処理装置は、曝気槽、又は、最終沈殿池内の活性汚
泥の粒径を計測し、過曝気状態か否かの判断を制御装置
にて実施し、過曝気状態であると判断した場合、曝気風
量を調節し、活性汚泥の破壊を防止する様に動作する。The image processing device measures the particle size of the activated sludge in the aeration tank or the final settling tank, and uses the control device to determine whether or not there is overaeration.If it is determined that there is overaeration, the aeration is stopped. It works to adjust the air volume and prevent the destruction of activated sludge.
それによって、活性汚泥は、過曝気による破壊が防止さ
れるようになるので、活性汚泥の粒径が好適な状態に維
持できるので、良好な下水処理が実施できる。As a result, the activated sludge is prevented from being destroyed by overaeration, and the particle size of the activated sludge can be maintained in a suitable state, so that good sewage treatment can be carried out.
以下、本発明の一実施例を第１図により説明する。下水
処理場に流入した下水は、沈砂池を経た後、最初沈殿池
１に流入し、曝気槽２にて、エアレーション処理後、最
終沈殿池３にて、汚泥と処理水に分離され、処理水は放
流される。An embodiment of the present invention will be described below with reference to FIG. The sewage that flows into the sewage treatment plant passes through the settling tank, first flows into the settling tank 1, then undergoes aeration treatment in the aeration tank 2, and is separated into sludge and treated water in the final settling tank 3. is released into the river.
下水処理の内、曝気槽は最も重要な処理工程であり、曝
気槽内では、活性汚泥が、汚水中の有機物を分解する。The aeration tank is the most important treatment step in sewage treatment, and in the aeration tank, activated sludge decomposes organic matter in the sewage.
この有機物分解に必要な空気を、供給する為に、送風機
５が設置され、曝気槽内の溶存酸素濃度をＤｏ計４で計
測し、溶存酸素濃度目標値になる様、風量調節弁７を制
御゛するＤｏ制御は、従来より実施されている。曝気風
量は、風量計６にて計測され、風量要求に応じ、送風機
５の台数制御も、従来より実施されている。A blower 5 is installed in order to supply the air necessary for this organic matter decomposition, and the dissolved oxygen concentration in the aeration tank is measured with a Do meter 4, and the air volume control valve 7 is controlled so that the dissolved oxygen concentration reaches the target value. Do control has been implemented in the past. The aeration air volume is measured by an air flow meter 6, and the number of blowers 5 is controlled according to the air volume requirement.
しかし、曝気槽内の活性汚泥は、各処理場において、各
々異なり、又、活性汚泥の性状は、季節により異なり、
一定の性状を維持する訳ではない。However, the activated sludge in the aeration tank is different at each treatment plant, and the properties of activated sludge vary depending on the season.
It does not maintain constant properties.
第２図は、活性汚泥の画像処理図であり、活性汚泥の形
状が大きく、最終沈殿池にて、容量易に処理水と分離可
能な活性汚泥であるが、第３図は、活性汚泥の形状が小
さく、活性汚泥の凝集が十分でなく、最終沈殿池にて、
処理水と活性汚泥の分離が困難であり、処理水中に活性
汚泥が混入し、処理水質の悪化を招く。Figure 2 is an image processing diagram of activated sludge, which has a large shape and can be easily separated from treated water in the final settling tank. Due to the small size of the activated sludge, coagulation of the activated sludge is insufficient, resulting in
Separation of treated water and activated sludge is difficult, and activated sludge gets mixed into the treated water, leading to deterioration of treated water quality.
この活性汚泥の細分化は、活性汚泥の凝集性以上の曝気
が、曝気槽内で実施された為、起こる。This fragmentation of activated sludge occurs because aeration exceeding the cohesiveness of activated sludge was carried out in the aeration tank.
そこで、活性汚泥の性状を検知する為、最終沈殿池にて
、活性汚泥の性状を検知する画像処理装置８を設置し、
水中カメラを最終沈殿池に入れ、画像処理装置にて、活
性汚泥の状態を検知する。Therefore, in order to detect the properties of activated sludge, an image processing device 8 that detects the properties of activated sludge is installed in the final settling tank.
An underwater camera is placed in the final settling tank, and an image processing device detects the condition of the activated sludge.
活性汚泥の大きさを計測する方法として、画像処理装置
内にて、画像の周りの画素を一画素ずつ消す方法を用い
た。As a method for measuring the size of activated sludge, a method was used in which pixels around the image were erased one by one in an image processing device.
第４図は、原画像から、周辺画素１画素消した例である
が、この処理を何段階も実施することにより、画像が完
全に消えるまでに、何回この処理が出来るかにより、容
易に活性汚泥の大きさを計測できる。Figure 4 shows an example of erasing one peripheral pixel from the original image, but by performing this process in multiple stages, you can easily determine how many times this process can be done until the image is completely erased. The size of activated sludge can be measured.
この様にして計測できた、活性汚泥の大きさの信号を制
御装置９に入力し、活性汚泥が細分化されていると判断
した場合、あらかしめ設定された、最低風量となる様、
風量調節弁７を絞り、要求風量の減少により、芸風機の
運転台数減少指令を出力する。The signal of the size of the activated sludge measured in this way is input to the control device 9, and if it is determined that the activated sludge has been subdivided, the air volume is adjusted to the preset minimum air volume.
The air volume control valve 7 is throttled, and as the required air volume decreases, a command to reduce the number of operating air fans is output.
本実施例では、水中カメラを最終沈殿池に入れたが、こ
れは、最終沈殿池では、撹拌がない為、計測が容易であ
るからである。In this example, the underwater camera was placed in the final sedimentation tank because there is no stirring in the final sedimentation tank, so measurements are easy.
又、活性汚泥が細分化した場合、最低風量に減少させて
いるが、Ｄｏ目標値を下げる方法も、容易に実施可能で
ある。Furthermore, when the activated sludge is fragmented, the air volume is reduced to the minimum, but a method of lowering the Do target value can also be easily implemented.
本発明によれば、活性汚泥の細分化が防止できるので、
最終沈殿池での、処理水と、活性汚泥の分離が維持でき
るので、処理水水質を維持できる効果がある。According to the present invention, since fragmentation of activated sludge can be prevented,
Since the separation of treated water and activated sludge can be maintained in the final settling tank, the quality of the treated water can be maintained.
第１図は本発明の一実施例の構成図、第２図は健全な活
性汚泥を示す図、第３図は細分化された活性汚泥を示す
図、第４図は画像処理装置内での画素消去前後の画像を
示す図である。
１・・・最初沈殿池、２・・・曝気槽、３・・・最終沈
殿池。
４・・・ＤＯ計、５・・・送風機、６・・・流量計、７
・・・風量調節弁、８・・・画像処理装置、９・・・制
御装置。
第
図
第
弔
図
図
１００／Ｐｍ
第
因Fig. 1 is a block diagram of an embodiment of the present invention, Fig. 2 is a diagram showing healthy activated sludge, Fig. 3 is a diagram showing subdivided activated sludge, and Fig. 4 is a diagram showing the activated sludge in an image processing device. It is a figure which shows the image before and after pixel erasure. 1... First settling tank, 2... Aeration tank, 3... Final settling tank. 4... DO meter, 5... Blower, 6... Flow meter, 7
... Air volume control valve, 8... Image processing device, 9... Control device. Figure 100/Pm First cause
Claims (1)
泥の粒径を認識できる画像処理装置と、画像処理装置に
より認識された活性汚泥の粒径により曝気状態が良好で
あるか否かを判断し、曝気風量を制御、もしくは、曝気
風量が適切でない事を知らしめることを特徴とする活性
汚泥制御装置。1. In a sewage treatment plant that uses the activated sludge method, an image processing device is used to recognize the particle size of activated sludge, and the particle size of the activated sludge recognized by the image processing device is used to determine whether or not the aeration condition is good. An activated sludge control device characterized by controlling the aeration air volume or notifying that the aeration air volume is not appropriate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188468A JPH0240295A (en) | 1988-07-29 | 1988-07-29 | Apparatus for controlling activated sludge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63188468A JPH0240295A (en) | 1988-07-29 | 1988-07-29 | Apparatus for controlling activated sludge |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0240295A true JPH0240295A (en) | 1990-02-09 |
Family
ID=16224250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63188468A Pending JPH0240295A (en) | 1988-07-29 | 1988-07-29 | Apparatus for controlling activated sludge |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0240295A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002096092A (en) * | 2000-09-21 | 2002-04-02 | Maezawa Ind Inc | Method of controlling grain size of floc as well as water treating method and device |
| JP2010190912A (en) * | 2010-05-27 | 2010-09-02 | Kurita Water Ind Ltd | Sludge property diagnostic device |
| CN102514982A (en) * | 2011-12-09 | 2012-06-27 | 桐昆集团浙江恒通化纤有限公司 | Shovel plate device of coiler |
| JP2012228645A (en) * | 2011-04-26 | 2012-11-22 | Hitachi Ltd | Water treatment apparatus, water treating method, and program for the method |
| JP2016172200A (en) * | 2015-03-16 | 2016-09-29 | メタウォーター株式会社 | Energy-saving-type sludge treatment system |
| CN114180733A (en) * | 2021-11-02 | 2022-03-15 | 合肥中盛水务发展有限公司 | Sewage aeration amount detection and aeration control system based on video analysis algorithm |
-
1988
- 1988-07-29 JP JP63188468A patent/JPH0240295A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002096092A (en) * | 2000-09-21 | 2002-04-02 | Maezawa Ind Inc | Method of controlling grain size of floc as well as water treating method and device |
| JP2010190912A (en) * | 2010-05-27 | 2010-09-02 | Kurita Water Ind Ltd | Sludge property diagnostic device |
| JP2012228645A (en) * | 2011-04-26 | 2012-11-22 | Hitachi Ltd | Water treatment apparatus, water treating method, and program for the method |
| CN102514982A (en) * | 2011-12-09 | 2012-06-27 | 桐昆集团浙江恒通化纤有限公司 | Shovel plate device of coiler |
| JP2016172200A (en) * | 2015-03-16 | 2016-09-29 | メタウォーター株式会社 | Energy-saving-type sludge treatment system |
| CN114180733A (en) * | 2021-11-02 | 2022-03-15 | 合肥中盛水务发展有限公司 | Sewage aeration amount detection and aeration control system based on video analysis algorithm |
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