JP2008104999A - Apparatus for treating water to be treated - Google Patents

Apparatus for treating water to be treated Download PDF

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JP2008104999A
JP2008104999A JP2006292938A JP2006292938A JP2008104999A JP 2008104999 A JP2008104999 A JP 2008104999A JP 2006292938 A JP2006292938 A JP 2006292938A JP 2006292938 A JP2006292938 A JP 2006292938A JP 2008104999 A JP2008104999 A JP 2008104999A
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sewage
gantry
tank body
water
treated
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JP4948120B2 (en
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Takane Kitao
高嶺 北尾
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SAMUTEKKU KK
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    • 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

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Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact aeration apparatus in which sewage can be made to pass equally among the contact materials packed in a rack. <P>SOLUTION: The lengths C of a pair of side parts 12, 13 of the rack 11, in which the contact material 16 is packed, in the height direction B is made longer than those D of the pair of side parts 12, 13 in the horizontal direction A. The sewage W, which is made to overflow the upper edge of a partition wall 18 by the air diffused from an air diffusion pipe 21, is made to pass among the contact materials 16 at an equal flow rate almost horizontally from the space between the partition wall 18 and the side part 12 of the rack 11. Since the sewage W is made to pass among the contact materials 16 at the equal flow rate all over the height direction B of the rack 11, the treatment efficiency of the sewage W by the contact material 16 can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、被処理水を貯溜させて処理する被処理水処理装置に関する。   The present invention relates to a treated water treatment apparatus for storing treated water for treatment.

従来、この種の被処理水処理装置である水処理装置としては、被処理水としての汚水が流入される生物処理槽を具備し、この生物処理槽内には、この生物処理槽の流入側から流出側に向けて誘導板と仕切板とが取り付けられている。そして、この生物処理槽内の流入側に誘導板が位置し流出側に仕切板が位置した部分には、この生物処理槽内に接触材を固定させる架台がそれぞれ取り付けられている。さらに、この生物処理槽内の架台の下部には、この架台内に保持されている接触材内に下方から上方に向けて汚水を通過させる散気管がそれぞれ取り付けられている（例えば、特許文献１参照。）。
特開２００５−６６５９５号公報 Conventionally, as a water treatment apparatus which is this type of treated water treatment apparatus, a biological treatment tank into which sewage as treated water flows is provided, and the inflow side of the biological treatment tank is disposed in the biological treatment tank. A guide plate and a partition plate are attached toward the outflow side. And the base | substrate which fixes a contact material in this biological treatment tank is each attached to the part in which the guide plate is located in the inflow side in this biological treatment tank, and the partition plate is located in the outflow side. Furthermore, a diffuser pipe for passing sewage from below to above is attached to the lower part of the gantry in the biological treatment tank in the contact material held in the gantry (for example, Patent Document 1). reference.).
JP 2005-66595 A

しかしながら、上記水処理装置では、生物処理槽内の汚水を下方から上方に向かう上下方向に沿って架台内の接触材内を通過させる構成である。したがって、この生物処理槽内の誘導板の近くでの汚水の流れが速く、この誘導板から水平方向に離れるに連れて汚水の流れが遅いので、これら架台内に汚水が流れて通過しない部分が形成されてしまうおそれがある。このことから、この架台内には実質的に使用されない接触材が存在してしまうおそれがあるという問題を有している。   However, in the said water treatment apparatus, it is the structure which passes the inside of the contact material in a mount along the up-down direction which goes upwards from the downward direction in the sewage in a biological treatment tank. Therefore, the flow of sewage near the guide plate in the biological treatment tank is fast, and the flow of sewage is slow as it leaves the guide plate in the horizontal direction. There is a risk that it will be formed. For this reason, there is a problem that there is a possibility that there is a contact material that is not substantially used in the gantry.

本発明は、上記問題点に鑑みなされたもので、処理室に被処理水を均等に通過できる被処理水処理装置を提供することを目的とする。   This invention is made | formed in view of the said problem, and it aims at providing the to-be-processed water processing apparatus which can pass to-be-processed water equally to a process chamber.

請求項１記載の被処理水処理装置は、被処理水が流入され底部および側面部を有する槽本体と、この槽本体内に取り付けられ、少なくとも対向する両側部が前記被処理水が透過可能に形成され、透過する前記被処理水を処理し、上下方向の長さが水平方向の長さより長い処理室と、前記槽本体内に上下方向に沿って取り付けられ、前記処理室の底部に下端部が接続された隔壁部と、前記槽本体内の底部の前記隔壁部と前記槽本体の側面部との間に配設された散気手段とを具備したものである。   The treated water treatment apparatus according to claim 1, wherein the treated water is introduced into the tank main body having a bottom portion and a side surface portion, and is attached to the tank main body so that at least opposite side portions are permeable to the treated water. The treated water that is formed and permeates is treated, and the vertical length is longer than the horizontal length, and is attached to the tank body along the vertical direction, and the bottom end of the treatment chamber is at the bottom. And a diffuser disposed between the partition wall at the bottom of the tank body and the side surface of the tank body.

請求項２記載の被処理水処理装置は、請求項１記載の被処理水処理装置において、槽本体内の処理室の底部より下部に取り付けられた洗浄散気手段を具備し、前記処理室の底部は、被処理水が透過可能に形成されているものである。   The treated water treatment apparatus according to claim 2 is the treated water treatment apparatus according to claim 1, further comprising a cleaning air diffuser attached below the bottom of the treatment chamber in the tank body. The bottom is formed so that the water to be treated can pass therethrough.

請求項１記載の被処理水処理装置によれば、槽本体に被処理水を流入させた状態で、この被処理水を散気手段にて散気することにより、槽本体の側面と隔壁との間の被処理水が上方へ流れて隔壁を越流した後に、この被処理水が処理室の両側部間を水平に透過していく。したがって、この処理室の上下方向に亘って被処理水を水平に透過できるから、この被処理水を処理室に均等に通過でき、この処理室での被処理水の処理効率を向上できる。   According to the treated water treatment apparatus of claim 1, the treated water is diffused by the aeration means in a state where the treated water is flowed into the tank main body, whereby the side surface and the partition wall of the tank main body are separated. After the water to be treated flows upward and crosses the partition wall, the water to be treated passes horizontally between both side portions of the treatment chamber. Therefore, since the water to be treated can be horizontally transmitted through the vertical direction of the treatment chamber, the water to be treated can be evenly passed through the treatment chamber, and the treatment efficiency of the treatment water in the treatment chamber can be improved.

請求項２記載の被処理水処理装置によれば、洗浄散気手段にて槽本体内の処理室の底部より下部の被処理水を散気することにより、この被処理水が処理室の底部を透過して、この処理室の底部から側面部へと通過する。したがって、この処理室を通過する被処理水の流れに直交する流れで処理室を洗浄できるので、この処理室を均等に洗浄できる。   According to the apparatus for treating water to be treated according to claim 2, the water to be treated is diffused from the bottom of the treatment chamber in the tank body by the cleaning air diffuser, so that the water to be treated becomes the bottom of the treatment chamber. And passes from the bottom to the side of the processing chamber. Therefore, since the treatment chamber can be washed with a flow orthogonal to the flow of the water to be treated passing through the treatment chamber, the treatment chamber can be evenly washed.

以下、本発明の被処理水処理装置の実施の一形態を図１を参照して説明する。   Hereinafter, an embodiment of the treated water treatment apparatus of the present invention will be described with reference to FIG.

図１において、１は被処理水処理装置としての接触ばっ気装置で、この接触ばっ気装置１は、横方向としての水平方向Ａの流れを生じさせる横流れ型の接触ばっ気槽である。そして、この接触ばっ気装置１は、被処理水としての汚水Ｗが貯溜される貯溜部としての貯溜槽である槽本体２を有している。この槽本体２は、汚水Ａを貯溜可能な中空の箱状に合成樹脂などで形成された水槽である。さらに、この槽本体２は、この槽本体２の側面を形成する計４枚の側面部３,４と、これら側面部３,４の底側を閉塞する底部５とで構成されている。   In FIG. 1, reference numeral 1 denotes a contact aeration apparatus as a water treatment apparatus, and this contact aeration apparatus 1 is a cross-flow type contact aeration tank that generates a flow in the horizontal direction A as a lateral direction. And this contact aeration apparatus 1 has the tank main body 2 which is a storage tank as a storage part in which the waste water W as to-be-processed water is stored. The tank body 2 is a water tank formed of a synthetic resin or the like in a hollow box capable of storing sewage A. Further, the tank body 2 includes a total of four side surface parts 3 and 4 that form the side surfaces of the tank body 2 and a bottom part 5 that closes the bottom sides of the side surface parts 3 and 4.

また、この槽本体２は、この槽本体２の各側面部３,４それぞれの幅方向である水平方向Ａの長さよりも、これら各側面部３,４それぞれの上下方向である高さ方向Ｂの長さが長い有底細長角筒状に形成されている。また、この槽本体２の底部５は、水平方向Ａに沿った奥行き方向の長さが、幅方向の長さよりも大幅に長い長方形状に形成されている。   The tank body 2 has a height direction B that is the vertical direction of each of the side surface parts 3 and 4 rather than the length in the horizontal direction A that is the width direction of each of the side surface parts 3 and 4 of the tank body 2. Is formed in a bottomed elongated rectangular tube shape having a long length. The bottom 5 of the tank body 2 is formed in a rectangular shape whose length in the depth direction along the horizontal direction A is significantly longer than the length in the width direction.

さらに、この槽本体２の内部には、この槽本体２内の汚水Ｗを浄化処理する中空直方体状の処理室としての接触材充填部である架台11が取り付けられている。この架台11は、槽本体２の対向して位置する一対の側面部３,４および底部５のそれぞれとの間に所定の間隙を介した状態で取り付けられている。そして、この架台11は、槽本体２の一対の側面部３,４間に位置している図示しない一対の側面部それぞれに接続されている。   Further, a pedestal 11 serving as a contact material filling part as a hollow rectangular parallelepiped processing chamber for purifying the sewage W in the tank body 2 is attached to the inside of the tank body 2. The gantry 11 is attached in a state with a predetermined gap between each of the pair of side surface parts 3 and 4 and the bottom part 5 positioned opposite to each other in the tank body 2. The gantry 11 is connected to a pair of side surfaces (not shown) located between the pair of side surfaces 3 and 4 of the tank body 2.

また、この架台11の槽本体２の対向する一対の側面部３,４のそれぞれに対向する一対の側部12,13のそれぞれは、透水性を有するように構成されている。そして、これら一対の側部12,13は、槽本体２内に貯溜される汚水Ｗの水位Ｌよりもこれら一対の側部12,13の上端部が上方に突出するように取り付けられている。   Moreover, each of a pair of side parts 12 and 13 which opposes each of a pair of side part 3 and 4 which the tank main body 2 of this mount 11 opposes is comprised so that it may have water permeability. The pair of side portions 12 and 13 are attached such that the upper end portions of the pair of side portions 12 and 13 protrude upward from the water level L of the sewage W stored in the tank body 2.

さらに、この架台11の下方に位置する底部14もまた、透水性を有するように形成されている。また、この架台11の上方に位置する上面部15は、この架台11の側部12,13間であって、槽本体２に貯溜される汚水Ｗの水位Ｌ、すなわちこの汚水Ｗの水面位置より下方に位置するように形成されている。そして、この架台11の上面部15は、透水性を有するパネルなどで形成されている。   Furthermore, the bottom 14 located below the gantry 11 is also formed to have water permeability. Further, the upper surface portion 15 located above the gantry 11 is between the side portions 12 and 13 of the gantry 11, and from the water level L of the sewage W stored in the tank body 2, that is, from the water surface position of the sewage W. It is formed so as to be positioned below. And the upper surface part 15 of this mount 11 is formed with the panel etc. which have water permeability.

さらに、この架台11の一対の側部12,13間の高さ方向Ｂの長さＣは、これら一対の側部12,13間の水平方向Ａの長さＤより長く形成されている。具体的に、この架台11は、一対の側部12,13間の高さ方向Ｂの長さＣが、これら一対の側部12,13間の水平方向Ａの長さＤよりも大幅に長い、例えば５倍以上１０倍以下の長さとなるように形成されている。   Further, the length C in the height direction B between the pair of side portions 12 and 13 of the gantry 11 is formed longer than the length D in the horizontal direction A between the pair of side portions 12 and 13. Specifically, in this gantry 11, the length C in the height direction B between the pair of side portions 12, 13 is significantly longer than the length D in the horizontal direction A between the pair of side portions 12, 13. For example, it is formed to have a length of 5 to 10 times.

また、この架台11の内部には、多数の接触材16が充填されている。これら接触材16は、これら接触材16に接触する汚水Ｗを浄化処理させるものである。   In addition, a large number of contact materials 16 are filled in the gantry 11. These contact materials 16 purify the sewage W that contacts these contact materials 16.

さらに、この架台11の底部14の一方の側部12側の一側縁には、この架台11の一方の側部12側に向けて水平に突出した平板状の底部延出部17が一体的に設けられている。この底部延出部17は、透水性を有さないパネルなどで形成されている。さらに、この底部延出部17は、この底部延出部17が設けられている側の架台11の側部12と槽本体２の側面部３との間の水平方向Ａの約中間位置までに亘って突出している。   Further, a flat plate-like bottom extending portion 17 projecting horizontally toward the one side 12 side of the gantry 11 is integrally formed on one side edge of the bottom portion 14 of the gantry 11 on the side 12 side. Is provided. The bottom extension 17 is formed of a panel having no water permeability. Further, the bottom extension 17 is located at an intermediate position in the horizontal direction A between the side 12 of the gantry 11 on the side where the bottom extension 17 is provided and the side 3 of the tank body 2. It protrudes across.

そして、この底部延出部17の先端部には、上下方向に沿って取り付けられた水流ガイドとしての隔壁部である矩形平板状の隔壁18が設けられている。この隔壁18の幅方向の両側縁は、槽本体２の一対の側面部３,４間に位置している図示しない一対の側面部のそれぞれに接合されている。さらに、この隔壁18の上下方向である高さ方向Ｂの下端縁は、底部延出部17の先端部に接合されている。また、この隔壁18の高さ方向Ｂの上端縁は、架台11の上面部15と同じ高さ位置となるように形成されている。さらに、この隔壁18は、槽本体２の側面部３と架台11の側部12との間の略中間部に位置するように取り付けられている。   A rectangular flat plate-shaped partition wall 18 serving as a partition wall portion serving as a water flow guide attached along the vertical direction is provided at the tip of the bottom extending portion 17. Both side edges of the partition wall 18 in the width direction are joined to a pair of side surfaces (not shown) located between the pair of side surfaces 3 and 4 of the tank body 2. Further, the lower end edge in the height direction B which is the vertical direction of the partition wall 18 is joined to the distal end portion of the bottom extending portion 17. Further, the upper end edge of the partition wall 18 in the height direction B is formed to be at the same height as the upper surface portion 15 of the gantry 11. Further, the partition wall 18 is attached so as to be positioned at a substantially intermediate portion between the side surface portion 3 of the tank body 2 and the side portion 12 of the gantry 11.

また、槽本体２内の隔壁18と、この槽本体２の側部12との間の下方には、散気手段としての散気管21が取り付けられている。この散気管21は、槽本体２内に貯溜されている汚水Ｗを散気して、この汚水Ｗに流れを生じさせるものである。すなわち、この散気管21は、槽本体２内の隔壁18と、この槽本体２の側面部３との間に位置している汚水Ｗを散気することにより、この槽本体２内の隔壁18と槽本体２の側面部３との間の汚水Ｗに上方に向かう流れ、すなわち上方流を生じさせつつ、この汚水Ｗの溶存酸素量を向上させるものである。   Further, an air diffuser 21 as an air diffuser is attached below the partition wall 18 in the tank body 2 and the side portion 12 of the tank body 2. The air diffuser 21 diffuses the sewage W stored in the tank body 2 and causes the sewage W to flow. That is, the air diffuser 21 diffuses the sewage W located between the partition wall 18 in the tank body 2 and the side surface portion 3 of the tank body 2, so that the partition wall 18 in the tank body 2 is diffused. The amount of dissolved oxygen in the sewage W is improved while generating an upward flow, ie, an upward flow, in the sewage W between the tank body 2 and the side surface 3 of the tank body 2.

さらに、槽本体２内の架台11の底部14の下方には、この架台11内の接触材16を洗浄するための洗浄散気手段としての逆洗空気管である洗浄散気管22が取り付けられている。この洗浄散気管22は、この洗浄散気管22からの汚水Ｗの散気により、架台11内に充填されている接触材16を空気逆洗する。そして、この洗浄散気管22は、架台11の底部14の水平方向Ａに沿った長さＤに応じて、１本以上、すなわち複数本が槽本体２の架台11の底部14の下方に、この底部14の幅方向に沿って等間隔に離間された状態で取り付けられている。   Further, below the bottom portion 14 of the gantry 11 in the tank body 2, a cleaning air diffusion pipe 22, which is a backwash air pipe as a cleaning air diffusing means for cleaning the contact material 16 in the gantry 11, is attached. Yes. The cleaning air diffuser 22 back-washes the contact material 16 filled in the gantry 11 with the air diffused from the cleaning air diffuser 22. And this washing | cleaning aeration pipe | tube 22 is below this bottom 14 of the base 11 of the tank main body 2 according to the length D along the horizontal direction A of the bottom 14 of the base 11 in the horizontal direction A. Attached in a state of being spaced apart at equal intervals along the width direction of the bottom portion 14.

次に、上記実施の一形態の被処理水処理装置の作用を説明する。   Next, the effect | action of the to-be-treated water treatment apparatus of the said embodiment is demonstrated.

まず、接触ばっ気装置１の槽本体２内に設置されている隔壁18の上端縁および架台11の上面部15のそれぞれよりも上方に汚水Ｗの水位Ｌが位置するまで、この槽本体２内に汚水Ｗを流入させて貯溜させる。   First, in the tank main body 2 until the water level L of the sewage W is positioned above the upper end edge of the partition wall 18 and the upper surface portion 15 of the mount 11 installed in the tank main body 2 of the contact aeration apparatus 1. The sewage W is allowed to flow into and stored.

この状態で、この槽本体２内に設置されている散気管21へと空気を送り込んで、この槽本体２内に貯溜されている汚水Ｗを散気する。   In this state, air is sent to the diffuser pipe 21 installed in the tank body 2 to diffuse the sewage W stored in the tank body 2.

このとき、この散気管21による汚水Ｗの散気によって、槽本体２の側面部３と隔壁18との間に位置している汚水Ｗに下方から上方に向かう上方流が生じる。   At this time, due to the diffusing of the sewage W by the diffusing pipe 21, an upward flow is generated in the sewage W located between the side surface portion 3 of the tank body 2 and the partition wall 18 from below to above.

そして、この槽本体２の側面部３と隔壁18との間の汚水Ｗの上方流によって、この汚水Ｗが隔壁18の上端縁を越流して、この隔壁18と架台11の側部12との間へ流れ込んでいく。   Then, due to the upward flow of the sewage W between the side surface portion 3 of the tank body 2 and the partition wall 18, the sewage W overflows the upper edge of the partition wall 18, and the partition wall 18 and the side portion 12 of the gantry 11 It flows in between.

このとき、この隔壁18と架台11の側部12との間へ流れ込んだ汚水Ｗは、この汚水Ｗの流れによって隔壁18と架台11の側部12との間で上方から下方に向かう下降流が生じる。   At this time, the sewage W flowing between the partition wall 18 and the side portion 12 of the gantry 11 is caused to flow downward from the upper side to the lower side between the partition wall 18 and the side portion 12 of the gantry 11 due to the flow of the sewage W. Arise.

この後、この隔壁18と架台11の側部12との間に流れ込んだ汚水Ｗは、架台11の高さ方向Ｂの長さＣが水平方向Ａの長さＤよりも長いことから、これら隔壁18と架台11の側部12との間から架台11内へと略横方向、すなわち略水平方向に向けて略均等に流れ込んでいく。   Thereafter, the sewage W flowing between the partition wall 18 and the side portion 12 of the gantry 11 has a length C in the height direction B of the gantry 11 longer than a length D in the horizontal direction A. From 18 and the side part 12 of the gantry 11, it flows into the gantry 11 substantially in the horizontal direction, that is, in the substantially horizontal direction.

そして、この汚水Ｗは、この架台11内の接触材16間を略水平方向Ａに沿って通過して、この架台11の側部13と槽本体２の側面部４との間へと流れていく。   The sewage W passes between the contact members 16 in the gantry 11 along the substantially horizontal direction A and flows between the side portion 13 of the gantry 11 and the side surface portion 4 of the tank body 2. Go.

このとき、この汚水Ｗは、架台11内の接触材16間を通過する際に、これら接触材16に接触して浄化処理される。   At this time, when the sewage W passes between the contact members 16 in the gantry 11, the sewage W comes into contact with the contact members 16 and is purified.

さらに、この架台11の側部13と槽本体２の側面部４との間へと流れた汚水Ｗは、この槽本体２の底部５と架台11の底部14との間へと流れていく。   Further, the sewage W flowing between the side portion 13 of the gantry 11 and the side surface portion 4 of the tank body 2 flows between the bottom portion 5 of the tank body 2 and the bottom portion 14 of the gantry 11.

そして、この槽本体２の底部５と架台11の底部14との間へと流れた汚水Ｗは、散気管21による汚水Ｗの散気によって、槽本体２の側部12と隔壁18との間へと流れていく。   And the sewage W which flowed between the bottom part 5 of this tank main body 2 and the bottom part 14 of the mount 11 is between the side part 12 of the tank main body 2, and the partition 18 by the diffusing of the sewage W by the diffuser pipe 21. It flows to.

ここで、この槽本体２内の架台18内に充填されている接触材16を洗浄する場合には、この槽本体２内に設置されている洗浄散気管22へと空気を送り込む。   Here, when cleaning the contact material 16 filled in the gantry 18 in the tank body 2, air is sent to the cleaning air diffuser 22 installed in the tank body 2.

このとき、この洗浄散気管22による散気によって、架台11内の接触材16間を通過する汚水Ｗの水平方向Ａに沿った流れに対して直交する高さ方向Ｂに向けて架台11内の接触材16が空気逆洗されるとともに、これら接触材16間を通過した汚水Ｗが架台11の側部12,13間から槽本体２内に溢れ出すように流れていく。   At this time, the air in the gantry 11 in the height direction B perpendicular to the flow along the horizontal direction A of the sewage W passing between the contact members 16 in the gantry 11 by the air diffused by the cleaning air diffusing pipe 22. The contact material 16 is backwashed with air, and the sewage W that has passed between the contact materials 16 flows so as to overflow into the tank body 2 from between the side portions 12 and 13 of the gantry 11.

ここで、図２に示す従来の接触ばっ気装置31では、散気管21による散気によって架台11の上方から下方に向かう縦方向としての鉛直方向、すなわち高さ方向Ｂに向けて汚水Ｗを通過させる構成である。このため、架台11の側部13の近くでは汚水Ｗの流れが強く、この架台11の側部13から離れるほど汚水Ｗの流れが弱くなるから、この汚水Ｗが不均等な状態で架台11内を通過する。したがって、この架台11内の側部12の近くに汚水Ｗが停滞する部分、すなわち浄化に利用されない無効な部分が生じやすい。   Here, in the conventional contact aeration apparatus 31 shown in FIG. 2, the sewage W passes through the vertical direction as the vertical direction from the upper side of the gantry 11 to the lower side, that is, in the height direction B by the diffusing by the diffusing tube 21. It is the structure to make. For this reason, the flow of sewage W is strong near the side 13 of the gantry 11, and the flow of sewage W decreases as the distance from the side 13 of the gantry 11 decreases. Pass through. Therefore, a portion where the sewage W stagnates near the side portion 12 in the gantry 11, that is, an invalid portion that is not used for purification tends to occur.

また、この従来の接触ばっ気装置31では、槽本体２内の架台11に充填されている接触材16が目詰まりして閉塞した際に、この槽本体２内の架台11の底部14の下方に設置した洗浄散気管22で散気して、この架台11内の接触材16を空気逆洗する。この場合に、この架台11に充填されている接触材16のうち、この架台11の上面部15寄りの部分の接触材16の目詰まりがひどいことから、この架台11に充填されている接触材16のうち洗浄散気管22の上部に位置する部分だけが洗浄されるに過ぎず、これら接触材16の洗浄後に、いわゆる水道(みずみち)といわれる汚水Ｗの短絡流路が接触材16間に形成されやすい。   Moreover, in this conventional contact aeration apparatus 31, when the contact material 16 filled in the gantry 11 in the tank body 2 is clogged and closed, the bottom 14 of the gantry 11 in the tank body 2 is below The contact material 16 in the gantry 11 is back-air-washed by aeration with a cleaning air diffusion tube 22 installed in In this case, since the clogging of the contact material 16 in the portion near the upper surface portion 15 of the gantry 11 among the contact material 16 filled in the gantry 11 is severe, the contact material filled in the gantry 11 Only the part located above the cleaning air diffuser 22 in 16 is cleaned, and after the contact material 16 is cleaned, a short-circuit flow path of sewage W called so-called water supply (mizumizu) is formed between the contact materials 16. Easy to form.

そこで、上述した実施の一形態のように、接触材16を充填させる架台11の一対の側部12,13間の高さ方向Ｂの長さＣを、これら一対の側部12,13間の水平方向Ａの長さＤより長く形成したことにより、散気管21による散気にて隔壁18の上端縁を越流した汚水Ｗが、隔壁18と架台11の側部12との間から均等な流速で、この架台11の側部12,13間である接触材16間を略水平方向に沿って通過していく。   Therefore, as in the embodiment described above, the length C in the height direction B between the pair of side portions 12 and 13 of the gantry 11 to be filled with the contact material 16 is set between the pair of side portions 12 and 13. By forming it longer than the length D in the horizontal direction A, the sewage W that has overflowed the upper end edge of the partition wall 18 due to the diffusion of the air diffuser 21 is evenly distributed between the partition wall 18 and the side portion 12 of the gantry 11. It passes along the substantially horizontal direction between the contact materials 16 which are between the side parts 12 and 13 of this mount frame 11 with the flow velocity.

したがって、この架台11の高さ方向Ｂの全体に亘って汚水Ｗを均等な流速で略水平に接触材16間を通過させることができるから、この架台11内に充填されている接触材16による汚水Ｗの処理効率を向上できる。このことから、この架台11内に充填させる接触材16の充填量を少なくすることが可能となる。よって、この接触材16の充填量を少なくすることにより、槽本体２の大きさを小さくできるから、この槽本体２の設置スペースを小さくできる。このため、この槽本体２を備えた接触ばっ気装置１が設置される土地を有効に利用できる。   Therefore, since the sewage W can pass between the contact members 16 at a uniform flow velocity substantially horizontally across the entire height direction B of the gantry 11, the contact material 16 filled in the gantry 11 is used. The processing efficiency of the sewage W can be improved. For this reason, it is possible to reduce the filling amount of the contact material 16 filled in the gantry 11. Therefore, since the size of the tank body 2 can be reduced by reducing the filling amount of the contact material 16, the installation space for the tank body 2 can be reduced. For this reason, the land in which the contact aeration apparatus 1 provided with this tank main body 2 is installed can be used effectively.

さらに、架台11の高さ方向Ｂの全体に亘って汚水Ｗが均等な流速で略水平に接触材16間を通過するので、この架台11内に充填させる接触材16の充填量を少なくでき、これら接触材16の目間隔を小さくできるので、これら接触材16の単位容積当たりの処理能力を向上できる。   Furthermore, since the sewage W passes between the contact materials 16 substantially horizontally at an equal flow rate throughout the height direction B of the gantry 11, the amount of the contact material 16 filled in the gantry 11 can be reduced. Since the interval between the contact materials 16 can be reduced, the processing capacity per unit volume of the contact materials 16 can be improved.

また、槽本体２内の架台11の底部14の下方に設置した洗浄散気管22による散気によって、この架台11の底部14の下方に位置する汚水Ｗに上方流が生じ、この汚水Ｗが架台11の底部14を通過して架台11内へ流入される。このことから、この架台11内の接触材16間を通過する汚水Ｗの水平方向Ａに沿った流れに対して直交する高さ方向Ｂに向けて架台11内の接触材16を洗浄散気管22で散気して、これら接触材16を空気逆洗できる。すなわち、この洗浄散気管22による散気によって、汚水Ｗの通過方向に対して直交する方向の全体に亘って、架台11内の接触材16を均一に洗浄できる。よって、例えば、接触材16間に高さ方向Ｂに沿って汚水Ｗを通過させる従来の接触ばっ気装置31の場合に生じる、いわゆる水道(みずみち)の発生を防止できる。   In addition, due to the air diffused by the cleaning air diffuser tube 22 installed below the bottom 14 of the gantry 11 in the tank body 2, an upward flow is generated in the sewage W located below the bottom 14 of the gantry 11. It passes through the bottom 14 of 11 and flows into the gantry 11. Therefore, the contact material 16 in the gantry 11 is washed and diffused in the height direction B orthogonal to the flow along the horizontal direction A of the sewage W passing between the contact materials 16 in the gantry 11. The contact material 16 can be backwashed with air. That is, the contact material 16 in the gantry 11 can be uniformly cleaned over the entire direction orthogonal to the passing direction of the sewage W by the air diffused by the cleaning air diffuser 22. Therefore, for example, it is possible to prevent the so-called water supply that occurs in the case of the conventional contact aeration apparatus 31 that passes the sewage W along the height direction B between the contact materials 16.

なお、上記実施の一形態において、汚水Ｗを対象として説明したが、汚水Ｗ以外の浄化処理が必要ないずれの被処理水であっても対応させて用いることができる。   In the above embodiment, the sewage W has been described as an object. However, any water to be treated other than the sewage W that needs to be purified can be used correspondingly.

本発明の被処理水処理装置の実施の一形態を示す説明断面図である。It is explanatory sectional drawing which shows one Embodiment of the to-be-processed water treatment apparatus of this invention. 従来の被処理水処理装置を示す説明断面図である。It is explanatory sectional drawing which shows the conventional to-be-processed water treatment apparatus.

符号の説明Explanation of symbols

１ 被処理水処理装置としての接触ばっ気装置
２ 槽本体
３,４ 側面部
５,14 底部
11 処理室としての架台
12,13 側部
18 隔壁部としての隔壁
21 散気手段としての散気管
22 洗浄散気手段としての洗浄散気管
Ｗ 被処理水としての汚水 1 Contact aeration device as treated water treatment device 2 Tank body 3, 4 Side surface 5, 14 Bottom
11 Mounting base as a processing chamber
12,13 side
18 Bulkhead as a bulkhead
21 Air diffuser as a diffuser
22 Cleaning air diffuser as cleaning air diffuser W Wastewater as treated water

Claims (2)

被処理水が流入され底部および側面部を有する槽本体と、
この槽本体内に取り付けられ、少なくとも対向する両側部が前記被処理水が透過可能に形成され、透過する前記被処理水を処理し、上下方向の長さが水平方向の長さより長い処理室と、
前記槽本体内に上下方向に沿って取り付けられ、前記処理室の底部に下端部が接続された隔壁部と、
前記槽本体内の底部の前記隔壁部と前記槽本体の側面部との間に配設された散気手段と
を具備したことを特徴とした被処理水処理装置。 A tank body into which water to be treated is introduced and having a bottom part and a side part;
A treatment chamber mounted in the tank body, at least opposite side portions are formed so that the water to be treated can pass therethrough, treats the water to be treated that passes therethrough, and has a vertical length longer than a horizontal length. ,
A partition wall attached in the vertical direction in the tank body, and having a lower end connected to the bottom of the processing chamber,
An apparatus for treating water to be treated, comprising: a diffuser disposed between the partition wall at the bottom of the tank body and the side surface of the tank body. 槽本体内の処理室の底部より下部に取り付けられた洗浄散気手段を具備し、
前記処理室の底部は、被処理水が透過可能に形成されている
ことを特徴とした請求項１記載の被処理水処理装置。 Provided with a cleaning air diffuser attached below the bottom of the processing chamber in the tank body,
The treated water treatment device according to claim 1, wherein the treated water is formed at the bottom of the treatment chamber so that the treated water can pass therethrough.
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