JP2000167579A - Aerobic treatment apparatus - Google Patents
Aerobic treatment apparatusInfo
- Publication number
- JP2000167579A JP2000167579A JP34269598A JP34269598A JP2000167579A JP 2000167579 A JP2000167579 A JP 2000167579A JP 34269598 A JP34269598 A JP 34269598A JP 34269598 A JP34269598 A JP 34269598A JP 2000167579 A JP2000167579 A JP 2000167579A
- Authority
- JP
- Japan
- Prior art keywords
- treated
- water
- end side
- microorganism
- treatment tank
- 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.)
- Granted
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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、好気性処理装置に
係り、特に、下水、し尿、産業排水等の有機性廃水（以
下「被処理水」という）中にエアを散気しながら微生物
固定化担体を利用して生物学的に処理する好気性処理装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an aerobic treatment apparatus, and more particularly to a method for immobilizing microorganisms while diffusing air into organic wastewater (hereinafter referred to as "treatment water") such as sewage, human waste, and industrial wastewater. The present invention relates to an aerobic treatment apparatus for biological treatment using an immobilized carrier.
【０００２】[0002]
【従来の技術】下水、し尿、産業排水等の被処理水を浄
化処理する装置としては、好気性条件下で微生物を利用
して生物学的に処理する好気性処理装置がある。この好
気性処理装置は、被処理水中のＢＯＤやアンモニア性窒
素を高速処理する目的から、密度が水よりも数％程度大
きな担体に微生物を固定化した微生物固定化担体を処理
槽内に投入し、微生物固定化担体を被処理水中で流動さ
せながら被処理水を生物学的に処理することが行われて
いる。2. Description of the Related Art As an apparatus for purifying water to be treated such as sewage, human waste, and industrial wastewater, there is an aerobic treatment apparatus for biological treatment using microorganisms under aerobic conditions. In this aerobic treatment apparatus, a microorganism-immobilized carrier in which microorganisms are immobilized on a carrier having a density about several% larger than that of water is introduced into a treatment tank for the purpose of high-speed treatment of BOD and ammonia nitrogen in water to be treated. 2. Description of the Related Art Biological treatment of water to be treated while flowing a microorganism-immobilized carrier in the water to be treated has been performed.
【０００３】図５及び図６は、微生物固定化担体を使用
した従来の好気性処理装置の一例である。図５の好気性
処理装置１は、処理槽２の対向する側面の一方端側に、
エアを上向きに散気する散気手段３を配設して、この散
気手段３からのエアにより処理槽２内に旋回流を発生さ
せ、これにより多数の微生物固定化担体４、４…を流動
させるものである。また、図６の好気性処理装置１は、
処理槽２の底部略全面にエアを上向きに散気する複数の
散気手段３、３…を配設して処理槽２内に複数の旋回流
を発生させ、これにより微生物固定化担体４を流動させ
るものである。FIGS. 5 and 6 show an example of a conventional aerobic treatment apparatus using a microorganism-immobilized carrier. The aerobic treatment device 1 of FIG. 5 includes, on one end side of the opposite side surface of the treatment tank 2,
An air diffusion means 3 for diffusing air upward is provided, and a swirling flow is generated in the treatment tank 2 by the air from the air diffusion means 3, whereby a large number of microorganism-immobilized carriers 4, 4,... It is to make it flow. In addition, the aerobic treatment device 1 of FIG.
A plurality of air diffusing means 3, 3... For diffusing air upwards are arranged on substantially the entire bottom of the processing tank 2 to generate a plurality of swirling flows in the processing tank 2, whereby the microorganism-immobilized carrier 4 is removed. It is to make it flow.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来の
好気性処理装置１は、処理槽２内の底部に微生物固定化
担体４が堆積され易く、微生物固定化担体４が処理槽
２、６内において十分に流動しないという欠点がある。
これにより、堆積した微生物固定化担体４への酸素の供
給が欠乏しやすくなると共に、被処理水と微生物固定化
担体４との接触効率が悪くなるという欠点がある。従っ
て、ＢＯＤやアンモニア性窒素の高速処理を十分に行う
ことができない。However, in the conventional aerobic treatment apparatus 1, the microorganism-immobilized carrier 4 is easily deposited on the bottom of the treatment tank 2, and the microorganism-immobilized carrier 4 is placed in the treatment tanks 2 and 6. There is a disadvantage that it does not flow sufficiently.
Accordingly, there is a disadvantage that the supply of oxygen to the deposited microorganism-immobilized carrier 4 is likely to be insufficient, and the contact efficiency between the water to be treated and the microorganism-immobilized carrier 4 is deteriorated. Therefore, high-speed processing of BOD and ammonia nitrogen cannot be performed sufficiently.
【０００５】この解決策として、図７及び図８に示すよ
うに、複数方向吐出型のポンプ式攪拌装置５、５…を処
理槽２の底部中央に複数配設し、吸い込んだ被処理水を
処理槽の底面に沿って複数方向に吐出し、これにより、
微生物固定化担体４が底部に堆積されるのを防止するこ
とが考えられる。しかし、複数方向吐出型のポンプ式攪
拌装置５をこのように処理槽２の中央に沿って複数配設
すると、図８に破線で示すように、隣接するポンプ式攪
拌装置５同士の堆積防止エリアが一部重複する。従っ
て、ポンプ式攪拌装置５と堆積防止エリアとの関係にお
いて無駄が発生するという欠点がある。更には、ポンプ
式攪拌装置５からの吐出により処理槽２の底部に発生す
る水流の方向が一様でないので、水流同士の衝突が発生
し、堆積防止のためのエネルギーロスが生じるという欠
点がある。As a solution to this problem, as shown in FIGS. 7 and 8, a plurality of multi-directional discharge type pump-type stirring devices 5, 5,... Discharges in multiple directions along the bottom of the processing tank,
It is conceivable to prevent the microorganism-immobilized carrier 4 from being deposited on the bottom. However, when a plurality of multi-directional discharge type pump-type stirring devices 5 are arranged along the center of the processing tank 2 in this manner, as shown by broken lines in FIG. Partially overlap. Therefore, there is a disadvantage that waste occurs in the relationship between the pump-type stirring device 5 and the accumulation preventing area. Furthermore, since the direction of the water flow generated at the bottom of the treatment tank 2 by the discharge from the pump-type stirring device 5 is not uniform, the water flows collide with each other, resulting in an energy loss for preventing accumulation. .
【０００６】本発明は、このような事情に鑑みてなされ
たもので、処理槽内で微生物固定化担体を少ないエネル
ギーで効率的に流動させることのできる好気性処理装置
を提供することを目的とする。The present invention has been made in view of such circumstances, and an object of the present invention is to provide an aerobic treatment apparatus capable of efficiently flowing a microorganism-immobilized carrier in a treatment tank with little energy. I do.
【０００７】[0007]
【課題を解決するための手段】本発明は前記目的を達成
するために、処理槽内の被処理水と多数の微生物固定化
担体とを好気性条件下で接触させて前記被処理水を生物
学的に浄化処理する好気性処理装置において、前記処理
槽内の一方端側に、前記被処理水中にエアを上向きに散
気する散気手段を配設し、前記処理槽内の他方端側底部
に、前記被処理水を吸い込んで前記一方端側に向けて吐
出する複数の一方向吐出型のポンプ式攪拌装置を横一列
に配設したことを特徴とする。According to the present invention, in order to achieve the above object, the water to be treated in a treatment tank is brought into contact with a large number of microorganism-immobilized carriers under aerobic conditions to convert the water to be treated into a biological material. In an aerobic treatment apparatus for chemically purifying, at one end side in the treatment tank, an air diffusion means for diffusing air upward in the water to be treated is disposed, and the other end side in the treatment tank. A plurality of one-way discharge pump-type agitators for sucking the water to be treated and discharging toward the one end side are arranged in a row at the bottom.
【０００８】本発明によれば、処理槽内の一方端側に散
気装置を配設し、他端側底部に一方向吐出型のポンプ式
攪拌装置を複数配設する。そして、ポンプ式攪拌装置は
吸い込んだ被処理水を一端側に向けて吐出する。これに
より、処理槽内の底部には、他端側から一端側に向けて
被処理水の層流が発生する。この層流により処理槽の底
部に沈降した微生物固定化担体は層流で掃かれるように
一端側に移動する。一端側には、散気手段によりエアが
上向きに散気されてエアリフト作用が発生しているの
で、一端側に掃き寄せられた微生物固定化担体は、エア
リフト作用により被処理水中を上昇する。これにより、
微生物固定化担体は処理槽の底部に堆積することなく被
処理水中を流動する。According to the present invention, an air diffuser is provided at one end of the processing tank, and a plurality of unidirectional discharge pump-type stirring devices are provided at the bottom of the other end. Then, the pump type stirring device discharges the sucked water to be treated toward one end. As a result, a laminar flow of the water to be treated is generated at the bottom in the treatment tank from the other end to the one end. The microorganism-immobilized carrier settled at the bottom of the treatment tank by this laminar flow moves to one end side so as to be swept by the laminar flow. At one end side, air is diffused upward by the air diffusing means to generate an air lift effect. Therefore, the microorganism-immobilized carrier swept to one end side rises in the water to be treated by the air lift effect. This allows
The microorganism-immobilized carrier flows in the water to be treated without being deposited on the bottom of the treatment tank.
【０００９】[0009]
【発明の実施の形態】以下、添付図面に従って本発明に
係る好気性処理装置の好ましい実施の形態について詳説
する。図１は、本発明に係る好気性処理装置１０の縦断
面図であり、図２は横断面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the aerobic treatment apparatus according to the present invention will be described below in detail with reference to the accompanying drawings. FIG. 1 is a longitudinal sectional view of an aerobic treatment device 10 according to the present invention, and FIG. 2 is a transverse sectional view.
【００１０】これらの図に示すように、好気性処理装置
１０は、主として、処理槽１２と、散気装置１４と、ポ
ンプ式攪拌装置１６とで構成される。処理槽１２は、略
直方体状に形成され、処理槽１２内には原水配管１８か
ら被処理水が供給されると共に、多数の微生物固定化担
体２０、２０…が投入されている。そして、被処理水と
微生物固定化担体２０とが散気装置１４からのエアによ
る好気性条件下で接触することにより、被処理水が生物
学的に処理される。処理された処理水は、担体流出防止
用のスクリーンを介して処理水配管２４により処理槽１
２外に排出される。As shown in these figures, the aerobic treatment apparatus 10 is mainly composed of a treatment tank 12, a diffuser 14, and a pump-type agitator 16. The treatment tank 12 is formed in a substantially rectangular parallelepiped shape. In the treatment tank 12, water to be treated is supplied from a raw water pipe 18, and a large number of microorganism-immobilized carriers 20, 20,. Then, the water to be treated is biologically treated by contacting the water to be treated and the microorganism-immobilized carrier 20 under aerobic conditions using air from the air diffuser 14. The treated water is treated by a treated water pipe 24 through a screen for preventing carrier outflow and treated in a treatment tank 1.
2 is discharged outside.
【００１１】また、処理槽１２内の短手方向の中央位置
には、長手方向に沿って隔壁２６が配設される。この隔
壁２６の高さは水深の５０〜７０％であり液面下に水没
配置され、その下端と上端は解放されている。これによ
り、処理槽１２内は、隔壁２６の下端と上端とで連通さ
れた２つのエリアＡ、Ｂに画成される。ここで、図２に
おいて、処理槽１２の対向する一対の側壁のうち、長手
方向の側壁を長壁Ｌ1、Ｌ2とする。また、エリアＡ、Ｂ
のうち、長壁Ｌ1 側のエリアをエリアＡ、長壁Ｌ2側の
エリアをエリアＢとする。A partition 26 is provided at the center of the processing tank 12 in the transverse direction along the longitudinal direction. The height of the partition wall 26 is 50 to 70% of the water depth, is submerged below the liquid level, and its lower end and upper end are open. As a result, the inside of the processing tank 12 is defined as two areas A and B which are communicated with the lower end and the upper end of the partition wall 26. Here, in FIG. 2, of the pair of opposed side walls of the processing tank 12, the side walls in the longitudinal direction are long walls L 1 and L 2 . Areas A and B
Of, long wall L 1 side area of the area A of the area B to the area of the longwall L 2 side.
【００１２】散気装置１４は、散気管２８と、エア配管
３０を介して散気管２８にエアを供給するエア供給装置
（図示せず）とで構成され、散気管２８には上向きにエ
アを吹き出す多数のノズル３２、３２…が所定間隔で形
成される。そして、複数の散気管２８が、処理槽１２の
短手方向からみて一方端側の処理槽１２内、即ちエリア
Ｂ側内に長壁Ｌ2に沿って配設される。この複数の散気
管２８は水深が略１／２位置程度のところに互いに平行
になるように配置される。これにより、各散気管２８の
ノズル３２からエアが被処理水中に散気されると、処理
槽１２内のエリアＢにはエアリフト作用による上向流が
発生する。尚、散気管２８を配設する水深は、特に限定
されるものではなく、例えば処理槽１２内の底部近傍で
もよい。The air diffuser 14 is composed of an air diffuser 28 and an air supply device (not shown) for supplying air to the air diffuser 28 through an air pipe 30. Are formed at predetermined intervals. Then, a plurality of diffuser tubes 28 is the lateral direction viewed from the other hand the end-side processing tank 12, i.e., along the longwall L 2 in the area B side in arrangement of the processing tank 12. The plurality of air diffusers 28 are arranged so as to be parallel to each other at a position where the water depth is approximately 1/2. Thus, when air is diffused into the water to be treated from the nozzles 32 of the respective diffuser tubes 28, an upward flow is generated in the area B in the processing tank 12 by the air lift action. The water depth at which the air diffuser 28 is provided is not particularly limited, and may be, for example, near the bottom of the processing tank 12.
【００１３】ポンプ式攪拌装置１６は、処理槽１２の短
手方向からみて他方端側の処理槽１２内、即ちエリアＡ
側内に長壁Ｌ1 に沿って横一列に配設される（図２参
照）。ポンプ式攪拌装置１６は、図３及び図４に示すよ
うに、ケーシング３４内に複数の羽根３６、３６…を有
する羽根車３８、３８が２個並列に設けられ、２個の羽
根車３８は軸受４０、４０、４０に回転自在に支持され
た回転軸４２に固設される。そして、回転軸４２がモー
タ４３により回転されると、羽根車３８が回転してポン
プ作用を行う。また、本発明のポンプ式攪拌装置１６の
場合、ケーシング３４上部に形成された共通の吸込口４
４から吸い込まれた被処理水は、ケーシング３４下部に
長壁Ｌ2方向を向いて形成された２つの吐出口４６、４
６から吐出される一方向吐出型に構成される。そして、
図３のように、ケーシング３４内の羽根車３８が矢印方
向に回転することにより、吸込口４４から下向きに吸い
込んだ被処理水を、吐出口４６から長壁Ｌ2に向けて吐
出する。従って、吸込口４４からの被処理水の吸い込み
により処理槽１２内のエリアＡには長壁Ｌ1 に沿った下
向流が形成されると共に、吐出口４６からの吐出により
処理槽１２底部には長壁Ｌ1 から長壁Ｌ2に向かって流
れる一方向の流れが形成される。この場合、羽根車３８
の回転周速を１〜３ｍ／秒とすることが好ましい。回転
周速が１ｍ／秒以下では微生物固定化担体２０を移動さ
せるだけの被処理水の流れが形成されにくくなり、３ｍ
／秒以上では回転車の羽根により微生物固定化担体２０
が破損され易くなる。The pump type stirring device 16 is provided inside the processing tank 12 on the other end side when viewed from the short side of the processing tank 12, that is, in the area A
They are arranged in a row along a longwall L 1 in the side (see FIG. 2). As shown in FIGS. 3 and 4, the pump type stirring device 16 includes two impellers 38, 38 having a plurality of blades 36, 36... It is fixed to a rotating shaft 42 rotatably supported by bearings 40, 40, 40. When the rotating shaft 42 is rotated by the motor 43, the impeller 38 rotates to perform a pumping operation. In the case of the pump type stirring device 16 of the present invention, the common suction port 4 formed in the upper part of the casing 34 is used.
4 treated water sucked from the two discharge ports formed facing longwall L 2 direction on the lower casing 34 46,4
6 is configured as a one-way discharge type. And
As shown in FIG. 3, by the impeller 38 in the casing 34 is rotated in the arrow direction, the water to be treated sucked downward from the suction port 44, for ejecting from the outlet port 46 to the long walls L 2. Therefore, the downward flow in the area A in the treatment tank 12 by the suction of the water to be treated along the long wall L 1 from the suction port 44 is formed, the treatment tank 12 bottom by the discharge from the discharge port 46 the unidirectional flow is formed flowing from the long wall L 1 in longwall L 2. In this case, the impeller 38
Is preferably 1 to 3 m / sec. If the rotational peripheral speed is 1 m / sec or less, it is difficult to form a flow of the water to be treated that moves the microorganism-immobilized carrier 20, and 3 m / min.
/ Sec or more, the microorganism-immobilized carrier 20 is
Is easily damaged.
【００１４】また、処理槽１２の長壁Ｌ1 、Ｌ2の下端
部は円弧状に形成される。これにより、処理槽１２底部
のコーナにおいて微生物固定化担体２０が滞留しにくく
なると共に、ポンプ式攪拌装置１６から長壁Ｌ2に向け
ての流れが長壁Ｌ2の円弧部４８に当たって上向きの流
れに方向転換され易くなる。次に、上記の如く構成され
た本発明の好気性処理装置１０の作用について説明す
る。The lower ends of the long walls L 1 and L 2 of the processing tank 12 are formed in an arc shape. Thus, the microorganism immobilization support 20 in the corner of the treatment tank 12 bottom is less likely to stay, the direction upward flow stream towards the pump stirrer 16 in longwall L 2 is against the arcuate portion 48 of the longwall L 2 It is easy to be converted. Next, the operation of the aerobic treatment device 10 of the present invention configured as described above will be described.
【００１５】エリアＡ内では、横一列に並設された各ポ
ンプ式攪拌装置１６の吸込口４４から吸い込まれた被処
理水は、長壁Ｌ2に向けて吐出される。また、各ポンプ
式攪拌装置１６の吸込口４４から被処理水が吸い込まれ
ることにより、エリアＡ内には下向流が形成される。一
方、エリアＢ内では、散気装置１４によるエアリフト作
用により上向流が発生している。従って、処理槽１２内
には、図１に矢印で示すように、エリアＡとエリアＢと
の間で図１の反時計回りに旋回する旋回流が形成され
る。この旋回流の発生において、エリアＡとエリアＢと
の境に隔壁２６が配設されているので、エリアＡ内の下
向流とエリアＢ内の上向流とが衝突することなく、スム
ーズな旋回流を発生させることができる。これにより、
処理槽内の微生物固定化担体２０は、この旋回流に乗っ
て被処理水中を流動する。[0015] In the area A, the treated water sucked from the suction port 44 of each pump stirrer 16 which is arranged in a horizontal row is discharged toward the longwall L 2. In addition, when the water to be treated is sucked from the suction port 44 of each pump type stirring device 16, a downward flow is formed in the area A. On the other hand, in the area B, an upward flow is generated by the air lift action of the air diffuser 14. Accordingly, a swirling flow that swirls counterclockwise in FIG. 1 between the area A and the area B is formed in the processing tank 12 as indicated by an arrow in FIG. In the generation of this swirling flow, since the partition wall 26 is disposed at the boundary between the area A and the area B, the downward flow in the area A does not collide with the upward flow in the area B, and the A swirling flow can be generated. This allows
The microorganism-immobilized carrier 20 in the treatment tank rides on the swirling flow and flows through the water to be treated.
【００１６】更に本発明では、複数のポンプ式攪拌装置
１６を、処理槽１２の一方端側、即ち長壁Ｌ1 に沿って
横一列に並べて、それぞれの吐出口４６の向きが全て長
壁Ｌ 2側に向くようにした。これにより、処理槽１２内
の底部には、長壁Ｌ1 側から長壁Ｌ2側への一方向に流
れる被処理水の層流が形成されるので、各ポンプ式攪拌
装置１６からの吐出エネルギー同士が干渉しあうことが
ない。従って、ポンプ式攪拌装置１６の吐出能力を大き
くしなくても、処理槽１２底部に沈降した微生物固定化
担体２０を効率的に長壁Ｌ2側に移動させることができ
る。Further, in the present invention, a plurality of pump-type stirring devices are provided.
16 is connected to one end side of the processing tank 12, that is, the long wall L1 along
All the outlets 46 are long in the horizontal line.
Wall L TwoI turned to the side. Thereby, the inside of the processing tank 12 is
At the bottom of the long wall L1 Long wall L from the sideTwoFlow in one direction to the side
The laminar flow of the water to be treated is formed.
The discharge energy from the device 16 may interfere with each other
Absent. Therefore, the discharge capacity of the pump type stirring device 16 is increased.
Immobilization of microorganisms settled at the bottom of treatment tank 12 without combing
Efficiently transform the carrier 20 into a long wall LTwoCan be moved to the side
You.
【００１７】また、長壁Ｌ2側の下端を円弧状にしたの
で、長壁Ｌ2側に移動した微生物固定化担体２０が長壁
Ｌ2に衝突して移動が停滞することがない。これによ
り、微生物固定化担体２０をエアリフト作用による上向
流にスムーズに乗り移させることができる。以上のよう
に、本発明では、散気装置１４とポンプ式攪拌装置１６
との組み合わせで処理槽１２内に被処理水の旋回流を発
生させるようにしたので、処理槽１２底部に微生物固定
化担体２０が堆積するのを防止することができる。ま
た、本発明では、処理槽１２内の一方端側に散気装置１
４を配設し、他端側底部に一方向吐出型のポンプ式攪拌
装置１６を複数配設するようにして処理槽１２底部に一
方向の層流が形成されるようにしたので、低動力のポン
プ式攪拌装置１６を使用することができる。例えば、ポ
ンプ式攪拌装置１６の吐出流速は約２ｍ／秒程度あれば
よく、この吐出流速を得るには、吐出口４６の開口面積
との兼ね合いもあるが羽根車３８の回転周速を３ｍ／秒
以下の低速に抑えることができる。従って、微生物固定
化担体の破損も殆どないと共に、設備投資やランニング
コストも削減することができる。Further, since the lower end of the longwall L 2 side is in an arc shape, movement to collide microbe immobilizing carrier 20 moved to the longwall L 2 side is the longwall L 2 is prevented from stagnating. Thereby, the microorganism-immobilized carrier 20 can be smoothly transferred to the upward flow by the air lift action. As described above, in the present invention, the air diffuser 14 and the pump-type stirring device 16
Since the swirling flow of the water to be treated is generated in the treatment tank 12 in combination with the above, the microorganism-immobilized carrier 20 can be prevented from being deposited on the bottom of the treatment tank 12. In the present invention, the air diffuser 1 is provided at one end of the processing tank 12.
4 and a plurality of one-way discharge type pump-type stirring devices 16 are provided at the bottom of the other end so that a laminar flow in one direction is formed at the bottom of the processing tank 12. Can be used. For example, the discharge flow rate of the pump-type stirring device 16 may be about 2 m / sec. To obtain this discharge flow rate, the rotational peripheral speed of the impeller 38 is set to 3 m / sec. It can be suppressed to a low speed of less than a second. Accordingly, the carrier for immobilizing microorganisms is hardly damaged, and equipment investment and running costs can be reduced.
【００１８】[0018]
【発明の効果】以上説明したように、本発明の請求項１
の好気性処理装置によれば、処理槽内の一方端側に散気
装置を配設し、他端側底部に一方向吐出型のポンプ式攪
拌装置を複数配設するようにしたので、処理槽内に少な
いエネルギーで旋回流を発生させることができる。これ
により、微生物固定化担体が処理槽底部に堆積されるこ
となく、微生物固定化担体を処理槽内で効率的に流動さ
せることができる。As described above, according to the first aspect of the present invention,
According to the aerobic treatment apparatus of the above, a diffuser is disposed on one end side of the treatment tank, and a plurality of one-way discharge type pump-type stirring devices are disposed on the bottom of the other end. A swirling flow can be generated in the tank with little energy. This allows the microorganism-immobilized carrier to flow efficiently in the processing tank without the microorganism-immobilized carrier being deposited on the bottom of the processing tank.
【００１９】また、請求項２の発明によれば、処理槽内
に隔壁を設けたので、より少ないエネルギーで旋回流を
発生させることができる。更に、請求項３の発明によれ
ば、ポンプ式攪拌装置の羽根車の回転周速を１〜３ｍ／
秒の低速で使用するようにしたので、壊れやすい微生物
固定化担体の場合でもポンプ式攪拌装置で破損すること
がない。According to the second aspect of the present invention, since the partition is provided in the processing tank, a swirling flow can be generated with less energy. Further, according to the invention of claim 3, the rotational peripheral speed of the impeller of the pump type stirring device is 1 to 3 m /
Since the carrier is used at a low speed of 2 seconds, even a fragile microorganism-immobilized carrier is not broken by a pump-type stirring device.
【図１】本発明の好気性処理装置の縦断面図FIG. 1 is a longitudinal sectional view of an aerobic treatment device of the present invention.
【図２】本発明の好気性処理装置の横断面図FIG. 2 is a cross-sectional view of the aerobic treatment device of the present invention.
【図３】一方向吐出型のポンプ式攪拌装置を説明する側
面断面図FIG. 3 is a side sectional view illustrating a one-way discharge type pump-type stirring device.
【図４】一方向吐出型のポンプ式攪拌装置を説明する正
面断面図FIG. 4 is a front sectional view illustrating a one-way discharge type pump-type stirring device.
【図５】従来の好気性処理装置の説明図FIG. 5 is an explanatory diagram of a conventional aerobic treatment device.
【図６】従来の好気性処理装置の別の説明図FIG. 6 is another explanatory view of a conventional aerobic treatment device.
【図７】従来の好気性処理装置の更に別の説明図FIG. 7 is another explanatory view of a conventional aerobic treatment device.
【図８】図７の好気性処理装置の作用を説明する説明図FIG. 8 is an explanatory diagram for explaining the operation of the aerobic treatment device of FIG. 7;
１０…好気性処理装置 １２…処理槽 １４…散気装置 １６…ポンプ式攪拌装置 ２０…微生物固定化担体 ２２…スクリーン ２６…隔壁 ２８…散気管 ３２…ノズル ３４…ケーシング ３６…羽根 ３８…羽根車 ４２…回転軸 ４４…吸込口 ４６…吐出口 DESCRIPTION OF SYMBOLS 10 ... Aerobic treatment apparatus 12 ... Treatment tank 14 ... Aeration device 16 ... Pump type stirring device 20 ... Microorganism immobilization carrier 22 ... Screen 26 ... Partition wall 28 ... Aperture tube 32 ... Nozzle 34 ... Casing 36 ... Blade 38 ... 42: rotating shaft 44: suction port 46: discharge port
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D003 AA13 AA14 AB04 AB09 DA07 DA11 DA18 DA19 DA20 DA30 FA02 4D029 AA01 AB06 BB10 DD03 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D003 AA13 AA14 AB04 AB09 DA07 DA11 DA18 DA19 DA20 DA30 FA02 4D029 AA01 AB06 BB10 DD03
Claims (3)
担体とを好気性条件下で接触させて前記被処理水を生物
学的に浄化処理する好気性処理装置において、 前記処理槽内の一方端側に、前記被処理水中にエアを上
向きに散気する散気手段を配設し、 前記処理槽内の他方端側底部に、前記被処理水を吸い込
んで前記一方端側に向けて吐出する複数の一方向吐出型
のポンプ式攪拌装置を横一列に配設したことを特徴とす
る好気性処理装置。An aerobic treatment apparatus for biologically purifying said water to be treated by bringing the water to be treated in said treatment tank into contact with a large number of microorganism-immobilized carriers under aerobic conditions. At one end side, an air diffuser for dispersing air upward in the water to be treated is disposed, and at the bottom at the other end side in the treatment tank, the water to be treated is sucked into the one end side. An aerobic treatment apparatus comprising: a plurality of one-way discharge pump-type stirring devices that discharge liquids in a line.
たエリアと、前記ポンプ式攪拌装置が配設されたエリア
に区画する隔壁を設け、２つのエリアを前記隔壁の上端
と下端で連通させたことを特徴とする請求項１の好気性
処理装置。2. A partition partitioning the inside of the processing tank into an area where the air diffuser is provided and an area where the pump type stirring device is provided, and the two areas are connected to the upper end of the partition. The aerobic treatment device according to claim 1, wherein the lower end communicates with the aerobic treatment device.
該羽根車の回転周速を１〜３ｍ／秒としたことを特徴と
する請求項１の好気性処理装置。3. The pump type stirring device has an impeller,
2. The aerobic treatment device according to claim 1, wherein the impeller has a rotation peripheral speed of 1 to 3 m / sec.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34269598A JP3446638B2 (en) | 1998-12-02 | 1998-12-02 | Aerobic treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34269598A JP3446638B2 (en) | 1998-12-02 | 1998-12-02 | Aerobic treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2000167579A true JP2000167579A (en) | 2000-06-20 |
| JP3446638B2 JP3446638B2 (en) | 2003-09-16 |
Family
ID=18355788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34269598A Expired - Lifetime JP3446638B2 (en) | 1998-12-02 | 1998-12-02 | Aerobic treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3446638B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7419594B2 (en) | 2003-10-09 | 2008-09-02 | Shaw Environmental & Infrastructure, Inc. | Apparatus and method for controlling biomass growth in suspended carrier bioreactor |
| JP2009072785A (en) * | 2008-12-01 | 2009-04-09 | Metawater Co Ltd | Nitrification carrier circulation method of deep aeration tank |
| JP2012005947A (en) * | 2010-06-24 | 2012-01-12 | Masa Tagome | Pump aeration device |
-
1998
- 1998-12-02 JP JP34269598A patent/JP3446638B2/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7419594B2 (en) | 2003-10-09 | 2008-09-02 | Shaw Environmental & Infrastructure, Inc. | Apparatus and method for controlling biomass growth in suspended carrier bioreactor |
| GB2425305B (en) * | 2005-04-15 | 2009-01-14 | Shaw Environmental & Infrastru | Apparatus and method for controlling biomass growth in suspended carrier bioreactor |
| JP2009072785A (en) * | 2008-12-01 | 2009-04-09 | Metawater Co Ltd | Nitrification carrier circulation method of deep aeration tank |
| JP2012005947A (en) * | 2010-06-24 | 2012-01-12 | Masa Tagome | Pump aeration device |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3446638B2 (en) | 2003-09-16 |
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