JPH0615284A - Water treatment apparatus - Google Patents
Water treatment apparatusInfo
- Publication number
- JPH0615284A JPH0615284A JP4197850A JP19785092A JPH0615284A JP H0615284 A JPH0615284 A JP H0615284A JP 4197850 A JP4197850 A JP 4197850A JP 19785092 A JP19785092 A JP 19785092A JP H0615284 A JPH0615284 A JP H0615284A
- Authority
- JP
- Japan
- Prior art keywords
- sludge
- pump
- tank
- aeration tank
- pipe
- 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
-
- 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
- Treatment Of Biological Wastes In General (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は都市廃水や生活廃水など
の廃水を接触曝気法による生物処理によって浄化する水
処理装置の改良に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to improvement of a water treatment device for purifying wastewater such as urban wastewater and domestic wastewater by biological treatment by a contact aeration method.
【０００２】[0002]
【従来の技術】図３は接触曝気法によって廃水を浄化す
る従来の水処理装置の一例を示すものであって、同図に
示すように、この種の装置は接触曝気槽１、２と、該曝
気槽での処理水を受け入れて上澄水を放流する沈澱槽３
からなり、さらに曝気槽の前段に在って導入廃水の流量
調整を行なう原水ピットが設置される。この従来例では
曝気槽は第１槽１と第２槽２からなり、該第２槽に隣接
して沈澱槽３が在る。接触曝気槽の各槽内には生物接触
濾材４およびブロワ５から送られる空気を槽内に放出す
る散気装置６が設置されている。７は原水ピットからの
原水導入管であり、８は沈澱槽の上澄水を放流する管で
ある。2. Description of the Related Art FIG. 3 shows an example of a conventional water treatment apparatus for purifying wastewater by a contact aeration method. As shown in FIG. Settling tank 3 that receives treated water in the aeration tank and discharges supernatant water
In addition, a raw water pit is installed in front of the aeration tank to adjust the flow rate of the introduced wastewater. In this conventional example, the aeration tank consists of a first tank 1 and a second tank 2, and a precipitation tank 3 is adjacent to the second tank. Inside each of the contact aeration tanks, an air diffuser 6 is installed for discharging the air sent from the biological contact filter 4 and the blower 5 into the tank. Reference numeral 7 is a raw water introduction pipe from the raw water pit, and 8 is a pipe for discharging the supernatant water of the precipitation tank.
【０００３】接触曝気槽の各槽内に充填された接触濾材
４には好気性微生物が付着し、ブロワ５から送られる空
気を各散気装置６から吐出することにより槽内の廃水を
撹拌し、同時に微生物に酸素を送り、微生物の接触酸化
作用によって廃水中の有機物を分解し、浄化する。接触
曝気槽の第２槽内の処理水は沈澱槽３に導入され、そこ
で汚泥と上澄水に分離され、汚泥は沈降し、底部に溜っ
た汚泥は曝気槽に戻され、且つ上澄水は放流管８を介し
放流される。Aerobic microorganisms adhere to the contact filter media 4 filled in each tank of the contact aeration tank, and the air sent from the blower 5 is discharged from each air diffuser 6 to stir the waste water in the tank. At the same time, oxygen is sent to microorganisms to decompose and purify organic matter in wastewater by the catalytic oxidation of microorganisms. The treated water in the second tank of the contact aeration tank is introduced into the precipitation tank 3, where it is separated into sludge and supernatant water, the sludge settles, the sludge accumulated at the bottom is returned to the aeration tank, and the supernatant water is discharged. It is discharged via the pipe 8.
【０００４】また、接触曝気槽の底部に溜った余剰汚泥
は、メンテナンス時にブロワ５の作動を止めて曝気作用
を停止した上、該槽内の水中ポンプにより上澄水を引き
抜いた上、バッキュ−ムカ−などの真空引抜きによって
引き抜かれることにより排除された。Excess sludge accumulated at the bottom of the contact aeration tank stops the operation of the blower 5 at the time of maintenance to stop the aeration action, and the supernatant water is extracted by the submersible pump in the tank, and then the vacuum muca is removed. -Excluded by being pulled out by vacuum pulling such as.
【０００５】[0005]
【発明が解決しようとする課題】このように従来技術で
は曝気槽内の水を排出した上、余剰汚泥を真空吸引によ
って引き抜かねばならなかったため、装置全体の運転を
停止しなければならず、従って稼動率を下げると共に、
著しく手間がかかる等の問題点があった。さらに余剰汚
泥が槽内の底部に長時間溜ったままの状態で置かれるこ
ともあり、そのような場合、該汚泥は嫌気性となり、生
物処理による処理水質を悪化させることもあった。As described above, in the prior art, since the water in the aeration tank was discharged and the excess sludge had to be drawn out by vacuum suction, the operation of the entire apparatus had to be stopped, and therefore, While lowering the operating rate,
There was a problem that it was extremely troublesome. In addition, excess sludge may be left in the bottom of the tank for a long period of time, and in such a case, the sludge becomes anaerobic and may deteriorate the quality of treated water by biological treatment.
【０００６】本発明の目的は上記従来技術の問題点を解
消することであって、それ故、稼動率を下げることな
く、且つ特別の手間を要することなく、余剰汚泥の処理
を好適に行ない得る水処理装置を提供することである。An object of the present invention is to eliminate the above-mentioned problems of the prior art, and therefore, it is possible to preferably treat surplus sludge without lowering the operating rate and without requiring special labor. A water treatment device is provided.
【０００７】[0007]
【課題を解決するための手段】本発明による水処理装置
の特徴は接触曝気槽内の余剰汚泥の引抜きをこの装置の
運転を停止することなく自動的に行なうことであって、
そのため曝気槽の底面上の隅部などに汚泥引抜管１５を
設けると共に該引抜管を引抜ポンプ１６に連通し、該ポ
ンプをタイマ−１９などの制御器により作動するように
した。また、汚泥の引き抜きを好適に行なうため引抜管
には適当な間隔で汚泥吸入用の穴が設けられている。A feature of the water treatment apparatus according to the present invention is that the excess sludge in the contact aeration tank is automatically withdrawn without stopping the operation of the apparatus.
Therefore, a sludge drawing pipe 15 is provided at a corner or the like on the bottom surface of the aeration tank, the drawing pipe is communicated with a drawing pump 16, and the pump is operated by a controller such as a timer-19. In addition, holes for sucking sludge are provided at appropriate intervals in the extraction pipe in order to appropriately extract the sludge.
【０００８】[0008]
【作用】予めタイマ−にセットされた時間が到来または
センサ−等により汚泥が溜ったことを感知すると、汚泥
引抜用のポンプが作動され、曝気槽内の余剰汚泥は引抜
管の各穴から該引抜管内に吸引され、且つ該管内から接
続管を通り、ポンプ１６を通って吐出され、適当な位置
に排出される。この余剰汚泥の引き抜きはブロワ５を作
動したまま、即ちこの水処理装置の運転を継続したまま
の状態で行なうことができる。When the time set in advance in the timer is reached or the sludge is detected by the sensor or the like, the pump for sludge withdrawal is operated, and the excess sludge in the aeration tank is removed from each hole of the withdrawal pipe. It is sucked into the drawing tube, passes through the connecting tube from the inside of the drawing tube, is discharged through the pump 16, and is discharged to an appropriate position. The removal of this excess sludge can be performed while the blower 5 is operating, that is, while the operation of this water treatment device is being continued.
【０００９】[0009]
【実施例】次に図面を参照のもとに本発明の実施例に関
し説明する。図１および図２は本発明の一実施例を示す
ものであって、図示のように、この例では曝気槽１０は
３つの槽１１、１２、１３からなり、且つ曝気槽１０の
前段に原水ピット１４が配置されている。また、図１に
は省略されているが、曝気槽の各槽内には生物接触濾材
４および散気装置が設置され、ブロワにより散気装置を
介して槽内に曝気を行なうようになっている。Embodiments of the present invention will now be described with reference to the drawings. 1 and 2 show an embodiment of the present invention. As shown in the figure, in this example, the aeration tank 10 is composed of three tanks 11, 12 and 13, and the raw water is provided in front of the aeration tank 10. The pit 14 is arranged. Although not shown in FIG. 1, a biological contact filter medium 4 and an air diffuser are installed in each tank of the aeration tank, and aeration is performed by the blower through the air diffuser into the tank. There is.
【００１０】図２に一層明瞭に示すように、この装置で
は曝気槽１０内の底面上の隅、即ち余剰汚泥２０が溜り
易い部分、例えば接触濾材４の下に位置する隅部に沿っ
て汚泥引抜管１５が備えられ、且つまた適当な位置、例
えば曝気槽上の適宜位置に汚泥引抜き用のポンプ１６が
設置される。このような引抜管１５は曝気槽１０の各室
に設置され、それぞれ適当な接続管１７を介してポンプ
１６の吸込口に接続されている。As shown more clearly in FIG. 2, in this apparatus, the sludge is along a corner on the bottom surface of the aeration tank 10, that is, a portion where the excess sludge 20 easily accumulates, for example, a corner located below the contact filter medium 4. A drawing pipe 15 is provided, and a pump 16 for drawing sludge is installed at an appropriate position, for example, an appropriate position on the aeration tank. Such a withdrawal pipe 15 is installed in each chamber of the aeration tank 10 and is connected to the suction port of the pump 16 via an appropriate connection pipe 17.
【００１１】引抜管１５は例えば塩化ビニ−ルからな
り、この引抜管に沿った複数箇所から汚泥を吸引するた
め適当な間隔で、例えば８０ｃｍの間隔で吸引用の穴が
設けられている。これらの穴の大きさはその間隔等との
関係で決められるが、一例では該穴の直径は２０ｍｍで
ある。また、所望により、汚泥の吸引を均一にするため
該穴の大きさをポンプ１６に近い側を比較的小さく且つ
離れるにつれて大きくしてもよい。The drawing pipe 15 is made of vinyl chloride, for example, and has suction holes at appropriate intervals, for example, 80 cm, for sucking sludge from a plurality of points along the drawing pipe. The size of these holes is determined in relation to the distance between them, but in one example, the diameter of the holes is 20 mm. If desired, the size of the hole may be relatively small on the side closer to the pump 16 and larger as the distance increases so as to make the suction of the sludge uniform.
【００１２】なお、引抜管１５と接続管１７は単一の管
の部分として一体に構成してもよいが、別個の管として
構成したものを適当な管継手により互に連結してもよ
い。ポンプ１６により引抜管１５および接続管１７を介
して引き抜いた余剰汚泥はこの実施例では原水ピット１
４に戻され、そのため返送用の管１８が設置される。The extraction pipe 15 and the connection pipe 17 may be integrally formed as a single pipe portion, but they may be formed as separate pipes and connected to each other by an appropriate pipe joint. Excess sludge extracted by the pump 16 through the extraction pipe 15 and the connection pipe 17 is the raw water pit 1 in this embodiment.
4 and therefore a return pipe 18 is installed.
【００１３】ポンプ１６は制御器によって自動的に作動
され、そのため図示の実施例では該制御器としてタイマ
−１９を含む制御系が設置され、適当な時間間隔でポン
プの作動が行なわれる。タイマ−１９によるポンプ１６
の作動は曝気槽内に沈降した余剰汚泥が嫌気性になる前
に引き抜くように行なわれ、従って被処理廃水のＢＯＤ
などによってタイマ−のセットが行なわれる。The pump 16 is automatically operated by a controller, so that in the illustrated embodiment, a control system including a timer-19 is installed as the controller to operate the pump at appropriate time intervals. Pump 16 by timer-19
Is operated so that the excess sludge settled in the aeration tank is withdrawn before it becomes anaerobic, and therefore the BOD of the treated wastewater
For example, the timer is set.
【００１４】この水処理装置の運転時はブロワ５が作動
され、各散気装置４を介して槽内に曝気を行なう。原水
ピット１４に導入された廃水は原水ポンプ２１によって
曝気槽の第１槽１１に導入され、そこから順次第２槽１
２、第３槽１３へと移動され、各槽内での微生物の接触
酸化作用によって浄化され、槽１３内の処理水が沈澱槽
３に導入される。沈澱槽内では従来と同様に上澄水が放
流され、沈降汚泥は曝気槽または原水ピットに返送され
る。When the water treatment device is in operation, the blower 5 is operated to aerate the inside of the tank through each air diffuser 4. The wastewater introduced into the raw water pit 14 is introduced into the first tank 11 of the aeration tank by the raw water pump 21, and from there, the second tank 1
2, moved to the third tank 13, purified by the catalytic oxidation action of microorganisms in each tank, the treated water in the tank 13 is introduced into the precipitation tank 3. The supernatant water is discharged in the settling tank as in the conventional case, and the settled sludge is returned to the aeration tank or the raw water pit.
【００１５】曝気槽内に余剰汚泥が或る程度溜ると、そ
の時点を予想して予めセットされたタイマ−１９の付勢
によりポンプ１６が作動され、曝気槽内の各引抜管１５
により余剰汚泥を引き抜き、接続管１７およびポンプ１
６を通って適当な位置に排出する。ポンプ１６の作動に
よる汚泥の引き抜きの際も曝気用のブロワは作動したま
まであり、運転は継続される。一例では余剰汚泥の引き
抜きは１日に数分程度行なわれる。なお、制御器として
は他の型、例えばセンサ−による制御、即ちセンサ−に
よって余剰汚泥を感知してポンプの作動を行なう方式で
もよい。When a certain amount of excess sludge is accumulated in the aeration tank, the pump 16 is operated by the preset activation of the timer 19 in anticipation of the time point, and the extraction pipes 15 in the aeration tank 15 are activated.
Excess sludge is pulled out by the connection pipe 17 and pump 1.
Discharge through 6 to an appropriate position. The blower for aeration is still operating even when the sludge is drawn out by the operation of the pump 16, and the operation is continued. In one example, excess sludge is pulled out for about several minutes a day. The controller may be of another type, for example, a control by a sensor, that is, a system in which the sensor detects excess sludge to operate the pump.
【００１６】[0016]
【発明の効果】従って、本発明によれば、曝気槽内の余
剰汚泥の引き抜きは適当な間隔で自動的に行なわれ、そ
の間も水処理装置の運転は継続されるので、稼動率を下
げることはない。さらに手作業を要しないので人手を省
き且つコストを節減し、且つまた沈降した余剰汚泥が嫌
気性になるのを防ぐことができ、処理水の水質を向上す
ることができる。According to the present invention, therefore, the excess sludge in the aeration tank is automatically withdrawn at appropriate intervals, and the water treatment device continues to be operated during that time, so the operating rate is reduced. There is no. Further, since no manual work is required, manpower can be saved and costs can be saved, and the settled surplus sludge can be prevented from becoming anaerobic, and the quality of treated water can be improved.
【図１】本発明の一例による水処理装置を示す側面図で
ある。FIG. 1 is a side view showing a water treatment device according to an example of the present invention.
【図２】図１の装置の横断面図である。2 is a cross-sectional view of the device of FIG.
【図３】従来の水処理装置を示す側面図である。FIG. 3 is a side view showing a conventional water treatment device.
１０ 曝気槽 １５ 引抜管 １６ ポンプ １７ 接続管 １９ 制御器 10 Aeration tank 15 Extraction pipe 16 Pump 17 Connection pipe 19 Controller
Claims (1)
曝気槽からなる水処理装置において、前記曝気槽の底面
上における余剰汚泥の溜り易い部分に汚泥引抜管が設置
され且つ適当な位置に汚泥の引き抜き用のポンプが備え
られ、前記引抜管は汚泥を吸入するため適当な間隔で穴
が設けられ且つ接続管を介して前記ポンプの吸込口に接
続され、さらに前記ポンプを作動する制御器を含むこと
を特徴とする水処理装置。1. A water treatment device comprising a contact aeration tank for purifying wastewater by a contact aeration method, wherein a sludge extraction pipe is installed at a portion of the bottom surface of the aeration tank where excess sludge easily accumulates, and sludge is appropriately placed. A pump for withdrawal is provided, the withdrawal pipe is provided with holes at appropriate intervals for sucking sludge, and is connected to a suction port of the pump through a connecting pipe, and further includes a controller for operating the pump. A water treatment device characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4197850A JPH0615284A (en) | 1992-07-01 | 1992-07-01 | Water treatment apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4197850A JPH0615284A (en) | 1992-07-01 | 1992-07-01 | Water treatment apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0615284A true JPH0615284A (en) | 1994-01-25 |
Family
ID=16381380
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4197850A Pending JPH0615284A (en) | 1992-07-01 | 1992-07-01 | Water treatment apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0615284A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10513231B2 (en) | 2017-06-21 | 2019-12-24 | Yazaki Corporation | Electronic component unit, wire harness, and connector fixing structure |
| US10809345B2 (en) | 2014-02-19 | 2020-10-20 | Array Technologies, Inc. | Torque limiter devices, systems and methods and solar trackers incorporating torque limiters |
-
1992
- 1992-07-01 JP JP4197850A patent/JPH0615284A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10809345B2 (en) | 2014-02-19 | 2020-10-20 | Array Technologies, Inc. | Torque limiter devices, systems and methods and solar trackers incorporating torque limiters |
| US10513231B2 (en) | 2017-06-21 | 2019-12-24 | Yazaki Corporation | Electronic component unit, wire harness, and connector fixing structure |
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