JPH0416299A - Waste water treatment tank - Google Patents
Waste water treatment tankInfo
- Publication number
- JPH0416299A JPH0416299A JP2118549A JP11854990A JPH0416299A JP H0416299 A JPH0416299 A JP H0416299A JP 2118549 A JP2118549 A JP 2118549A JP 11854990 A JP11854990 A JP 11854990A JP H0416299 A JPH0416299 A JP H0416299A
- Authority
- JP
- Japan
- Prior art keywords
- partition wall
- extension wall
- wall
- treatment 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
- 238000004065 wastewater treatment Methods 0.000 title claims description 25
- 238000006243 chemical reaction Methods 0.000 claims description 17
- 238000001556 precipitation Methods 0.000 claims description 8
- 238000005192 partition Methods 0.000 abstract description 45
- 239000010802 sludge Substances 0.000 abstract description 17
- 239000007788 liquid Substances 0.000 abstract description 16
- 238000004062 sedimentation Methods 0.000 abstract description 12
- 239000002351 wastewater Substances 0.000 abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 9
- 239000006228 supernatant Substances 0.000 abstract description 5
- 230000000630 rising effect Effects 0.000 abstract 2
- 230000001174 ascending effect Effects 0.000 abstract 1
- 238000005188 flotation Methods 0.000 abstract 1
- 239000000725 suspension Substances 0.000 description 12
- 238000005273 aeration Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000010842 industrial wastewater Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000003028 elevating effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003466 welding 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
- Aeration Devices For Treatment Of Activated Polluted Sludge (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、下水、産業廃水等を生物学的に処理する反応
部・沈殿部一体型の廃水処理槽に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Application Field) The present invention relates to a wastewater treatment tank with integrated reaction section and sedimentation section for biologically treating sewage, industrial wastewater, etc.
（従来の技術）
近年、下水、産業廃水等の廃水を生物学的に処理する廃
水処理槽か多く用いられている。第４図はこのような廃
水処理槽の従来例を示す図である。(Prior Art) In recent years, wastewater treatment tanks for biologically treating wastewater such as sewage and industrial wastewater have been widely used. FIG. 4 is a diagram showing a conventional example of such a wastewater treatment tank.
第４図において、処理槽１内にはエアリフト管２か同心
状に配されており、このエアリフト管２の下方には散気
管３か配され、この散気管３は管４を介して空気源５に
接続されている。また処理槽１の上方には隔壁６か設け
られ、反応部７と沈殿部８とを区分している。この隔壁
６の内側には隔壁９か配設されている。また、反応部７
の下方には管１０が配設されており、沈殿部８の上方に
は管１１が配設されている。さらに沈殿部８の下方には
開閉弁１２を介して管１３か配設されている。In FIG. 4, air lift pipes 2 are arranged concentrically within the processing tank 1, and an aeration pipe 3 is arranged below the air lift pipe 2, and the aeration pipe 3 is connected to an air source via a pipe 4. 5. Further, a partition wall 6 is provided above the processing tank 1 to separate the reaction section 7 and the precipitation section 8. A partition wall 9 is disposed inside the partition wall 6. In addition, reaction section 7
A pipe 10 is arranged below the settling section 8, and a pipe 11 is arranged above the settling section 8. Furthermore, a pipe 13 is disposed below the settling section 8 via an on-off valve 12.
このような廃水処理槽において、廃水の処理を行う場合
には管１０を介して処理１１Ｉｌ内に廃水１４を導入す
るとともに、空気源５から管４および散気管３を介して
エアリフト管２内に空気を吹き込む。このエアリフト管
２内に吹き込まれた空気は気泡１５となり、懸濁液１６
と生物粒１７とともに上昇してエアリフト管２の上部で
脱気する。In such a wastewater treatment tank, when treating wastewater, wastewater 14 is introduced into the treatment 11Il through the pipe 10, and is also introduced into the airlift pipe 2 from the air source 5 through the pipe 4 and the aeration pipe 3. Blow air. The air blown into the air lift tube 2 becomes bubbles 15, and the suspension 16
The particles rise together with the biological particles 17 and are degassed at the upper part of the air lift tube 2.
さらに脱気された懸濁液１６と生物粒１７とが反転して
エアリフト管２の外側を下降し、反応部７内を循環する
。そして廃水１４を好気的に生物処理した懸濁液１６は
沈殿部８に流出し、沈殿部８て余剰汚泥１８として固液
分離された後、開閉弁１２を介して管１３から排出され
る。同時に沈殿部８の上澄液は処理水１９として管１１
から放流される。Furthermore, the degassed suspension 16 and biological particles 17 are reversed and descended on the outside of the air lift tube 2, and circulated within the reaction section 7. The suspension 16 resulting from the aerobic biological treatment of the wastewater 14 flows into the settling section 8, where it is separated into solid and liquid as surplus sludge 18, and then discharged from the pipe 13 via the on-off valve 12. . At the same time, the supernatant liquid of the sedimentation section 8 is transferred to the pipe 11 as treated water 19.
It is discharged from.
（発明か解決しようとする営題）
しかしながら、このような従来の廃水処理槽においては
、隔壁６と隔壁９の間に気泡１５が下降して沈殿部８に
流入し、沈殿部８上部で流入した気泡の上昇にともなう
旋回流２０が発生することがある。旋回流２０か発生す
ると、沈殿していた余剰汚泥１８が浮上して、管１１を
介し処理水１９に混入して排出される。その結果、処理
水１９の水質が低下して効率の良い廃水処理が行えない
といった問題か生した。(Problem to be solved by the invention) However, in such a conventional wastewater treatment tank, the air bubbles 15 descend between the partition wall 6 and the partition wall 9 and flow into the sedimentation section 8, and the air bubbles 15 descend into the sedimentation section 8 at the upper part of the sedimentation section 8. A swirling flow 20 may occur as the bubbles rise. When the swirling flow 20 is generated, the surplus sludge 18 that has settled rises to the surface, mixes with the treated water 19 through the pipe 11, and is discharged. As a result, the quality of the treated water 19 deteriorated, resulting in a problem that efficient wastewater treatment could not be performed.
特に、廃水１４の流量または濃度の増加に対応して空気
源５の空気供給量を増加させたときや、反応部７内の溶
存酸素濃度を上げる等の目的で撹拌強度を大きくした場
合には、その影響が著しく、余剰汚泥１８が沈殿部８内
で撹拌され、処理水１９に混入・流出してしまい、反応
部７内の懸濁液１６の濃度が低下して廃水処理能力が著
しく低下するといった問題が生じた。In particular, when the air supply amount from the air source 5 is increased in response to an increase in the flow rate or concentration of the wastewater 14, or when the stirring intensity is increased for the purpose of increasing the dissolved oxygen concentration in the reaction section 7, etc. , the influence is significant, and the excess sludge 18 is stirred in the sedimentation section 8 and mixed into the treated water 19 and flows out, reducing the concentration of the suspension 16 in the reaction section 7 and significantly reducing the wastewater treatment capacity. A problem arose.
（目的）
本発明はこのような従来の課題を解決するためになされ
たもので、その目的とするところは、余剰汚泥の浮上、
流出を防止し、処理水の水質を良好に維持して高効率の
廃水処理を行うことか可能な信頼性の高い廃水処理槽を
提供することにある。(Purpose) The present invention was made to solve such conventional problems, and its purpose is to improve the surfacing of excess sludge,
It is an object of the present invention to provide a highly reliable wastewater treatment tank capable of preventing outflow, maintaining good water quality of treated water, and performing highly efficient wastewater treatment.
（課題を解決するための手段）
上記の目的を達成するために本発明は、反応部の外側に
沈殿部を一体的かつ同心状に配置した廃水処理槽におい
て、反応部と沈殿部とを仕切る気液分離用隔壁の内側に
形成された内側隔壁の上部に、上端縁高さ調節用の延長
壁を昇降自在に配置し、この延長壁の上部に放射状の支
持部材を配設し、この支持部材の中心位置に昇降駆動装
置との連結部を形成したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a wastewater treatment tank in which a precipitation section is integrally and concentrically arranged outside the reaction section, and the reaction section and the precipitation section are partitioned. An extension wall for adjusting the height of the upper edge is disposed on the upper part of the inner partition wall formed inside the gas-liquid separation partition wall so as to be able to rise and fall freely, and a radial support member is arranged on the upper part of this extension wall. A feature is that a connecting portion with the lifting drive device is formed at the center of the member.
（作用）
本発明による廃水処理槽では、昇降駆動装置を作動する
ことにより内側隔壁が上下方向に移動可能となり、隔壁
間を下降する下降流の速度の調整が自在となる。(Function) In the wastewater treatment tank according to the present invention, the inner partition wall can be moved in the vertical direction by operating the lifting drive device, and the speed of the downward flow flowing between the partition walls can be freely adjusted.
その結果、廃水処理槽の運転条件に変動が生した場合に
、気泡が沈殿部に混入しないように内側の隔壁の高さを
調節することにより、沈殿部内の旋回流の発生およびそ
の旋回流による余剰汚泥の浮上、流出が防止される。As a result, when there are fluctuations in the operating conditions of the wastewater treatment tank, by adjusting the height of the inner partition wall to prevent air bubbles from entering the settling section, it is possible to generate a swirling flow in the settling section and to prevent the swirling flow from occurring. Surplus sludge is prevented from floating and flowing out.
（実施例）
第１図は本発明による延長壁を備えた廃水処理槽の構成
例を示す図である。(Example) FIG. 1 is a diagram showing an example of the configuration of a wastewater treatment tank equipped with an extension wall according to the present invention.
第１図において、円筒状の処理槽３０は、その底部が逆
円錐状に形成され、その上部には外側上方に広がるテー
パ一部３１とその外周部がら上方に延びる筒状部３２と
を有するジャケット３３か形成されている。また処理槽
３０内には、両端か開口した円筒状のエアリフト管３４
が処理槽３０と同心状に配設されており、このエアリフ
ト管３４の下方には散気管３５が設けられている。さら
にこの散気管３５は、管３６を介して空気源３７に接続
されている。In FIG. 1, a cylindrical processing tank 30 has an inverted conical bottom and a tapered portion 31 that extends outward and upward, and a cylindrical portion 32 that extends upward from its outer periphery. A jacket 33 is formed. Also, inside the processing tank 30, there is a cylindrical air lift pipe 34 that is open at both ends.
is arranged concentrically with the processing tank 30, and an aeration pipe 35 is provided below the air lift pipe 34. Furthermore, this diffuser pipe 35 is connected to an air source 37 via a pipe 36.
一方、処理ｔ！３０の上端３８の上部には、処理槽とほ
ぼ同一半径をもち両端か開口した円筒状の第１の隔壁４
０か設けられ、第１の隔壁４０の外側に両端か開口した
円筒状の第２の隔壁４１が配設されて反応部４２が構成
されている。また、前記第２の隔壁４１とジャケット３
３によって環状の沈殿部４３が構成され、さらに、第１
の隔壁４０の上部に第１の隔壁４０とほぼ同一半径をし
た延長壁４５が連結されている。On the other hand, processing t! Above the upper end 38 of 30, there is a cylindrical first partition wall 4 which has approximately the same radius as the processing tank and is open at both ends.
0, and a cylindrical second partition wall 41 with both ends open outside the first partition wall 40 is disposed to form a reaction section 42. Further, the second partition wall 41 and the jacket 3
3 constitutes an annular precipitation part 43, and furthermore, the first
An extension wall 45 having approximately the same radius as the first partition wall 40 is connected to the upper part of the partition wall 40 .
この延長壁４５は支持板４６と連結され、支持板４６の
頂点部に吊り環４７を設け、この吊り環４７にケーブル
４８を接続し、このケーブル４８は滑車４９と滑車５０
を順に介して、回転方向の反転が自在なモータ５１によ
り駆動される在上げトラム５３に接続されている。This extension wall 45 is connected to a support plate 46, a suspension ring 47 is provided at the top of the support plate 46, a cable 48 is connected to this suspension ring 47, and this cable 48 is connected to a pulley 49 and a pulley 50.
are connected to a lifting tram 53 driven by a motor 51 whose rotational direction can be reversed.
前記滑車４９は筒状部３２最上端に配した上ぶた５２の
ほぼ中央部に配設されており、前記滑車５０はその上ぶ
た５２の周辺部に配設されている。The pulley 49 is disposed approximately at the center of the upper lid 52 disposed at the uppermost end of the cylindrical portion 32, and the pulley 50 is disposed around the upper lid 52.
また、前記第１の隔壁４０の下端とテーパ一部３１との
間には液絡部６０か設けられており、前記第２の隔壁４
１の下端とテーパ一部３１との間にも液絡部６１が設け
られている。ここで、第１の隔壁４０の上部に連結した
延長壁４５の上端は、越流端６２より少し高い位置に配
置されている。Further, a liquid junction portion 60 is provided between the lower end of the first partition wall 40 and the tapered portion 31, and a liquid junction portion 60 is provided between the lower end of the first partition wall 40 and the tapered portion 31.
A liquid junction portion 61 is also provided between the lower end of 1 and the tapered portion 31 . Here, the upper end of the extension wall 45 connected to the upper part of the first partition wall 40 is arranged at a position slightly higher than the overflow end 62.
処理槽３０内には、活性炭、アンスラサイト、砂等の比
重が１よりも大きい担体６３が、反応部４２の容積の１
〜１０％（Ｖ／Ｖ）程度充填されている。処理槽３０内
には廃水６４を導入するための管６５が接続されており
、また沈殿部４３の越流端６２には管６６が接続されて
いる。さらにジャケット３３のテーパ一部３１てかっ液
絡部６１の上方には、開閉弁６７を有する管６８が配設
されている。In the treatment tank 30, a carrier 63 such as activated carbon, anthracite, sand, etc. having a specific gravity greater than 1 is placed in an area of 1 of the volume of the reaction section 42.
It is filled to about 10% (V/V). A pipe 65 for introducing waste water 64 is connected into the treatment tank 30, and a pipe 66 is connected to the overflow end 62 of the settling section 43. Further, above the tapered portion 31 of the jacket 33 and the liquid junction portion 61, a pipe 68 having an on-off valve 67 is disposed.
二こて、第１の隔壁４０と延長壁４５としては、第２図
にその外観を示すように、延長壁４５の上部開口部に三
角形の支持板４６を対角線上でかつ中心の接続部が延長
壁４５と同軸上に位置するように４枚配設されている。As for the first partition wall 40 and the extension wall 45, as shown in FIG. Four pieces are arranged coaxially with the extension wall 45.
中心部で接合された支持板４６の頂点には吊り環４７が
溶接等により一体的に取付けられている。また、第３図
に示すように延長壁４５を固定するためにガイド機構７
０が第１の隔壁４０と延長壁４５との間に配設されてい
る。このガイド機構７０は、延長壁４５の下部でかつ内
側側面部に突設した板７１と、第１の隔壁４０の上部で
かつ外側側面縦方向に配設したガイド７２とから構成さ
れている。ガイド７２の側面開口部の幅は、板７１の水
平幅よりも大きくなっている。A hanging ring 47 is integrally attached to the apex of the support plate 46 joined at the center by welding or the like. Further, as shown in FIG. 3, a guide mechanism 7 is provided for fixing the extension wall 45.
0 is disposed between the first partition wall 40 and the extension wall 45. The guide mechanism 70 includes a plate 71 that is located at the lower part of the extension wall 45 and protrudes from the inner side surface, and a guide 72 that is located at the upper part of the first partition wall 40 and is arranged in the longitudinal direction of the outer side surface. The width of the side opening of the guide 72 is larger than the horizontal width of the plate 71.
次に、以上のように構成した廃水処理槽の作用について
説明する。Next, the operation of the wastewater treatment tank configured as above will be explained.
反応部４２内に種汚泥として活性汚泥を反応部４２の容
積の５〜５０％（Ｖ／Ｖ）投入して適当な運転条件、例
えばＨＲＴ （水力学的滞留時間）を０．５〜５時間、
送風倍率を１〜２０倍の運転条件を設定して廃水処理を
開始する。Activated sludge is introduced into the reaction section 42 as a seed sludge at 5 to 50% (V/V) of the volume of the reaction section 42, and the operating conditions are adjusted to appropriate conditions, such as HRT (hydraulic retention time) for 0.5 to 5 hours. ,
The operating conditions are set such that the air blowing magnification is 1 to 20 times, and wastewater treatment is started.
廃水の処理を行う場合には、管６５を介して処理槽３０
内に廃水６４を一定流量で導入するとともに、空気源３
７から管３６を介して散気管３５に空気を供給する。こ
の散気管３５に供給された空気は処理１３０内のエアリ
フト管３４内に噴出し気泡８０となる。このエアリフト
作用によってエアリフト管３４の内部で１００〜１ 、
０００ ｍ／ｈの上向流８１が発生する。この上向流
８１によって気泡８０、懸濁液８２、担体６３がエアリ
フト管３４内を上昇する。When treating wastewater, the treatment tank 30 is connected via the pipe 65.
At the same time, waste water 64 is introduced into the air source 3 at a constant flow rate.
7 supplies air to the diffuser pipe 35 via the pipe 36. The air supplied to the diffuser pipe 35 blows out into the air lift pipe 34 in the processing 130 and becomes bubbles 80. Due to this air lift action, 100~1 inside the air lift pipe 34,
000 m/h upward flow 81 is generated. This upward flow 81 causes the bubbles 80, the suspension 82, and the carrier 63 to rise within the air lift tube 34.
エアリフト管３４と処理槽３０内壁との間の環状間隔で
は、上向流８１の発生にともない上向流８１とほぼ同一
速度の下降流８３が発生する。この下降流８３は、第１
の隔壁４０およびそれに連結した延長壁４５によって、
エアリフト管３４と第１の隔壁４０との間を流れる本流
８４と、第１の隔壁４０と第２の隔壁４１との間を流れ
る支流８５に分流される。さらに支流８５は、第１の隔
壁４〔〕と第２の隔壁４１の下方で２方向に分かれ、一
方は液絡部６０を通して本流８４を合流し、他方は液絡
部６１を通じて沈殿部４３に流入する。In the annular space between the air lift pipe 34 and the inner wall of the processing tank 30, as the upward flow 81 is generated, a downward flow 83 having approximately the same speed as the upward flow 81 is generated. This downward flow 83 is the first
By the partition wall 40 and the extension wall 45 connected thereto,
It is divided into a main stream 84 that flows between the air lift pipe 34 and the first partition wall 40 and a tributary stream 85 that flows between the first partition wall 40 and the second partition wall 41 . Further, the tributary stream 85 is divided into two directions below the first partition wall 4 [ ] and the second partition wall 41 , one side joins the main stream 84 through the liquid junction 60 , and the other flows into the precipitation section 43 through the liquid junction 61 . Inflow.
前記上向流８１と下降流８３によって懸濁液８２と担体
６３が循環流動し担体６３の表面に懸濁液８２中の好気
性微生物が付着し生物粒８６が形成される。この循環流
動する過程で、廃水６４が好気的に生物処理される。生
物処理された懸濁液８２の一部は、前記支流８５として
液絡部６１を介して沈殿部４３に流入し、懸濁液８２中
に浮遊していた余剰汚泥８８か下方に沈降し、上方には
上澄液８７か分離する。この上澄液８７は越流端６２上
を越えてから管６５を介し処理水８９として外部へ放流
される。The suspension 82 and the carrier 63 circulate and flow due to the upward flow 81 and the downward flow 83, and the aerobic microorganisms in the suspension 82 adhere to the surface of the carrier 63, forming biological particles 86. During this circulating flow process, the wastewater 64 is subjected to aerobic biological treatment. A part of the biologically treated suspension 82 flows into the sedimentation section 43 via the liquid junction 61 as the tributary 85, and the excess sludge 88 floating in the suspension 82 settles downward, A supernatant liquid 87 is separated in the upper part. This supernatant liquid 87 passes over the overflow end 62 and is then discharged to the outside through the pipe 65 as treated water 89.
廃水６４の濃度・流量の変化等に対応して空気の供給量
を変化した場合、下降流８３（上向流８〕）が変化し、
同時に支流８５の流速が変化する。When the air supply amount is changed in response to changes in the concentration and flow rate of the wastewater 64, the downward flow 83 (upward flow 8) changes,
At the same time, the flow velocity of the tributary stream 85 changes.
ここで、モータ５１を回転させてケーブル４８を巻上げ
、または巻戻して延長壁４５を上下方向に移動し延長壁
４５の上端位置を適当なレベルに調整することにより、
支流８５の流速を最適状態に維持することができる。こ
の調整で第１の隔壁４０と第２の隔壁４１との環状間隔
内には、気泡８０が流下されなくなる。それにより、沈
殿部４３内に気泡８０がリークしなくなり、沈殿部４３
における余剰汚泥８８の沈降性が向上して、余剰汚泥８
８が完全に分離されずに上澄液８７に混入したままで系
外に流出するのが防止される。Here, by rotating the motor 51 to wind up or unwind the cable 48 to move the extension wall 45 in the vertical direction and adjust the upper end position of the extension wall 45 to an appropriate level,
The flow velocity of the tributary stream 85 can be maintained at an optimum state. This adjustment prevents the air bubbles 80 from flowing down within the annular space between the first partition wall 40 and the second partition wall 41. As a result, the air bubbles 80 do not leak into the settling section 43, and the settling section 43
The sedimentation properties of the surplus sludge 88 are improved, and the surplus sludge 8
8 is prevented from being completely separated and remaining mixed in the supernatant liquid 87 and flowing out of the system.
本実施例の廃水処理槽においては、以下のような効果が
得られる。In the wastewater treatment tank of this embodiment, the following effects can be obtained.
（１）延長壁４５の上端位置を越流端６２よりも少し高
い位置に調整したので、第１の隔壁４０と第２の隔壁４
１との間の支流８５の流速が本流８４よりも小さくなり
、また気泡８０の下降流がなくなる。そのため、沈殿部
４３の余剰汚泥８８の沈降性を良好にすることが可能と
なる。(1) Since the upper end position of the extension wall 45 is adjusted to a position slightly higher than the overflow end 62, the first partition wall 40 and the second partition wall 4
The flow velocity of the tributary stream 85 between the main stream 84 and the main stream 84 becomes smaller, and the downward flow of the bubbles 80 disappears. Therefore, it becomes possible to improve the sedimentation properties of the excess sludge 88 in the settling section 43.
（２）延長壁４５上端に配した支持板４６を、三角形に
してかつ対角線上に配したので、延長壁４５と支持板４
６の接続が強固となり、長期間の延長壁４５の上ド変動
に耐えることか可能となった。(2) Since the support plate 46 arranged at the upper end of the extension wall 45 is triangular and arranged diagonally, the extension wall 45 and the support plate 46
The connection of the extension wall 45 has become strong and can withstand the upward fluctuation of the extension wall 45 over a long period of time.
（３）第１の隔壁４０と延長壁４５にストッパー７０を
配したので、延長壁４５の回転を防止することができる
。(3) Since the stopper 70 is provided on the first partition wall 40 and the extension wall 45, rotation of the extension wall 45 can be prevented.
（４）反応部４２および沈殿部４３が円筒構造となって
いるので、長手方向の軸に対して軸対象となり、偏流の
発生を防止することができる。(4) Since the reaction section 42 and the precipitation section 43 have a cylindrical structure, they are axially symmetrical with respect to the longitudinal axis, and it is possible to prevent the occurrence of drifting.
（５）反応部４２内に担体６３が投入されているので、
担体６３の表面に生物膜が形成され、これによって反応
部４２内での懸濁液８２の濃度か著しく低減される。こ
れにより余剰汚泥８８の生成か抑制されるので、余剰汚
泥８８の流出を抑制することかできる。(5) Since the carrier 63 is placed in the reaction section 42,
A biofilm is formed on the surface of the carrier 63, thereby significantly reducing the concentration of the suspension 82 within the reaction section 42. This suppresses the generation of excess sludge 88, so that the outflow of excess sludge 88 can be suppressed.
なお、本実施例の廃水処理槽の形状は円筒状になってい
るが、例えば方形その他の多角形状でも適用可能であり
、その形状は限定されるものではない。Although the shape of the wastewater treatment tank in this embodiment is cylindrical, it is also applicable to, for example, a rectangular or other polygonal shape, and the shape is not limited.
また、処理槽３０内にエアリフト管３４を具備している
が、エアリフト管３４を配していない廃水処理槽にも本
発明を適用することができる。Furthermore, although the treatment tank 30 is equipped with an air lift pipe 34, the present invention can also be applied to a wastewater treatment tank in which no air lift pipe 34 is arranged.
さらに、延長壁４５の半径は第１の隔壁４０の半径より
も大きいが、逆に第１の隔壁４０の半径の方が大きくな
ってもよい。支持板４６の形状や個数あるいはストッパ
ー７０の形状等は、その機能が維持される範囲で変更可
能である。Furthermore, although the radius of the extension wall 45 is larger than the radius of the first partition wall 40, the radius of the first partition wall 40 may be larger. The shape and number of the support plates 46, the shape of the stopper 70, etc. can be changed within a range that maintains its function.
また、ガイド７２の代わりに図示しないが、延長壁４５
と第１の隔壁４０との間にラックとピニオンによる昇降
機構を複数組介装しておき、ビニオンを回転させること
により延長壁４５を昇降させることも可能である。Also, instead of the guide 72, an extension wall 45 (not shown) is provided.
It is also possible to interpose a plurality of elevating mechanisms using racks and pinions between the first partition wall 40 and the first partition wall 40, and to move the extension wall 45 up and down by rotating the pinions.
さらに、廃水６４を導入する管６５の接続場所は第１図
に限定されるものではなく、巻上げ機についてもモータ
５１に限定されない。Furthermore, the connection location of the pipe 65 introducing the waste water 64 is not limited to that shown in FIG. 1, and the hoist is not limited to the motor 51 either.
以上説明した本発明によれば、隔壁間を下降する支流の
速度を低下させかつ気泡が沈殿部に混入しないように延
長壁の高さを調整することができるのて、沈殿部内の旋
回流の発生およびその旋回流による余剰汚泥の浮上、流
出を防止できる。このため、処理水の水質を良好にして
高効率の廃水処理を行うことか可能な信頼性の高い廃水
処理槽が得られる。According to the present invention described above, the height of the extension wall can be adjusted so as to reduce the speed of the tributary flowing down between the partition walls and prevent air bubbles from entering the settling section, thereby reducing the swirling flow in the settling section. It is possible to prevent excess sludge from floating and flowing out due to generation and its swirling flow. Therefore, a highly reliable wastewater treatment tank that can improve the quality of treated water and perform highly efficient wastewater treatment can be obtained.
第１図は本発明による廃水処理槽の一実施例を示す構成
図、第２図は同実施例における第１の隔壁と延長壁の構
造を示す外観図、第３図は同実施例におけるガイド機構
の構造を示す外観図、第４図は従来の廃水処理槽の一例
を示す概略構成図である。
４０・・・第１の隔壁
４１・・・第２の隔壁
４２・・・反応部
４３・・・沈殿部
４５・・・延長壁
４６・・・支持板
４７・・・吊り環
４８・・・ケーブル
９ ・・
滑車
０・・・滑車
・・・モ
タ−
０・・・液絡部
・・・液絡部Fig. 1 is a configuration diagram showing an embodiment of a wastewater treatment tank according to the present invention, Fig. 2 is an external view showing the structure of a first partition wall and an extension wall in the same embodiment, and Fig. 3 is a guide in the same embodiment. An external view showing the structure of the mechanism, and FIG. 4 is a schematic configuration diagram showing an example of a conventional wastewater treatment tank. 40...First partition wall 41...Second partition wall 42...Reaction section 43...Precipitation section 45...Extension wall 46...Support plate 47...Hanging ring 48... Cable 9... Pulley 0... Pulley... Motor 0... Liquid junction... Liquid junction
Claims (1)
した廃水処理槽において、反応部と沈殿部とを仕切る気
液分離用隔壁の内側に形成された内側隔壁の上部に、上
端縁高さ調節用の延長壁を昇降自在に配置し、この延長
壁の上部に放射状の支持部材を配設し、この支持部材の
中心位置に昇降駆動装置との連結部を形成したことを特
徴とする廃水処理槽。(1) In a wastewater treatment tank in which a precipitation part is integrally and concentrically arranged outside a reaction part, an upper end A feature is that an extension wall for adjusting the edge height is arranged so as to be freely raised and lowered, a radial support member is arranged on the upper part of this extension wall, and a connection part with the lifting drive device is formed at the center of this support member. wastewater treatment tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118549A JPH0416299A (en) | 1990-05-10 | 1990-05-10 | Waste water treatment tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2118549A JPH0416299A (en) | 1990-05-10 | 1990-05-10 | Waste water treatment tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0416299A true JPH0416299A (en) | 1992-01-21 |
Family
ID=14739336
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2118549A Pending JPH0416299A (en) | 1990-05-10 | 1990-05-10 | Waste water treatment tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0416299A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089668A (en) * | 2001-05-24 | 2002-11-30 | 이정호 | Roll blind |
-
1990
- 1990-05-10 JP JP2118549A patent/JPH0416299A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020089668A (en) * | 2001-05-24 | 2002-11-30 | 이정호 | Roll blind |
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