JP3010951B2 - Immersion type filtration apparatus - Google Patents

Immersion type filtration apparatus

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Publication number
JP3010951B2
JP3010951B2 JP5009656A JP965693A JP3010951B2 JP 3010951 B2 JP3010951 B2 JP 3010951B2 JP 5009656 A JP5009656 A JP 5009656A JP 965693 A JP965693 A JP 965693A JP 3010951 B2 JP3010951 B2 JP 3010951B2
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membrane separation
separation tank
tank
mizuguchi
water
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JPH06218237A (en
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清司 和泉
正史 師
祐二 添田
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株式会社クボタ
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Description

【発明の詳細な説明】 DETAILED DESCRIPTION OF THE INVENTION

【0001】 [0001]

【産業上の利用分野】本発明は、槽内において固液分離を浸漬型濾過装置に関する。 The present invention relates to a submerged filtration device solid-liquid separation in the bath.

【0002】 [0002]

【従来の技術】従来、水処理において濾過装置を用いる構成としては、例えば図2に示すようなものがある。 Conventionally, as a configuration using a filtration device in the water treatment is, for example, as shown in FIG. 図2において、反応槽1には原水供給管2を通して下水、 2, the reaction tank 1 sewage through the raw water supply tube 2,
し尿等の原水が流入し、原水は反応槽1内の活性汚泥と混合して混合液3を形成する。 Raw water flows, such as night soil, the raw water to form a liquid mixture 3 was mixed with activated sludge in the reaction vessel 1. また、ブロアー4により空気5を送気管6を通して散気装置7に供給し、散気装置7から上方に向けて空気5を曝気する。 Further, the air 5 is supplied through the air supply pipe 6 to the diffuser 7 by blower 4, aerating air 5 upward from the air diffuser 7. この曝気によって混合液3中に酸素を供給するとともに、空気5のエアリフト作用により生起する上昇攪拌流によって反応槽1内の混合液3を攪拌混合しながら槽内で循環させる。 Oxygen supplies in the mixture 3 This aeration, the mixture 3 in the reaction vessel 1 is circulated in a bath with mixing agitation by elevated stirred flow that occurs by air lift action of air 5.

【0003】一方、膜分離ユニット8によって反応槽1 On the other hand, the reaction vessel 1 by membrane separation unit 8
内の混合液3を固液分離し、膜分離ユニット8の濾過膜を透過した透過液は処理水9として吸引ポンプ10により吸引管11を通して処理水槽12に取り出す。 The mixture 3 was solid-liquid separation of the inner permeate having passed through the filtration membrane of the membrane separation unit 8 retrieves the treating tank 12 through the suction pipe 11 by the suction pump 10 as treated water 9.

【0004】 [0004]

【発明が解決しようとする課題】しかし、上記した従来の構成において、反応槽1内の混合液3を固液分離するためには、吸引ポンプ10によって膜分離ユニット8に負圧を与える必要がある。 [SUMMARY OF THE INVENTION However, in the conventional structure described above, in order to solid-liquid separation of mixed liquid 3 in the reaction tank 1, it is necessary to provide a negative pressure to the membrane separation unit 8 by the suction pump 10 is there. この負圧は膜分離ユニット8 This negative pressure membrane separation unit 8
における透過流束(Fluxフラックス)に応じて制御するものであるが、膜面にケーキ層が形成されると透過流束が低下するので、負圧を高める必要があり、吸引ポンプ10の駆動に伴うランニングコストが高くなる問題があった。 But it is intended to control in accordance with the flux (Flux Flux) in, because permeation flux is lowered and the cake layer is formed on the film surface, it is necessary to increase the negative pressure, the driving of the suction pump 10 there has been a problem that the running cost associated with increases.

【0005】本発明は上記課題を解決するもので、吸引ポンプを用いることなく、かつ別途に動力を必要とすることなく槽内の被処理水を固液分離することができる浸漬型濾過装置を提供することを目的とする。 [0005] The present invention is intended to solve the above problems, an immersion type filtration apparatus which can solid-liquid separating the treated water in the tank without the need for no, and the power separately using a suction pump an object of the present invention is to provide.

【0006】 [0006]

【課題を解決するための手段】上記課題を解決するために、本発明の浸漬型濾過装置は、被処理水が流入する膜分離槽内に膜分離ユニットを適当水深下に浸漬配置し、 In order to solve the above problems SUMMARY OF THE INVENTION, immersion type filtration apparatus of the present invention, immersed arranged membrane separation unit under appropriate depth in the membrane separation tank in which water to be treated flows,
集水口が膜分離ユニットより上方の適当位置に開口するオーバーフロー管を設け、基端側が膜分離ユニットの透過液流路に連通するとともに、先端側が膜分離槽の外部において膜分離槽液面より下方位置に開口する取出管を設けた構成としたものである。 Collecting Mizuguchi is provided an overflow pipe which opens in a proper position of the above the membrane separation unit, with the base end side communicates with the permeate channel membrane separation unit, the distal end side is lower than the membrane separation tank liquid level outside the membrane separation tank is obtained by a structure in which a take-out pipe opening into position.

【0007】また、オーバーフロー管の集水口を上下に昇降自在に設けた構成としたものである。 [0007] is obtained by a vertically movable provided configuration collecting Mizuguchi overflow tube vertically. また、取出管の先端側に流量調整弁を設けた構成としたものである。 Also, it is obtained by a structure in which a flow control valve on the distal end side of the take-out tube.

【0008】 [0008]

【作用】上記した構成により、オーバーフロー管の集水口を上限として膜分離槽内に被処理水を貯留し、膜分離槽内の水位を集水口の位置を設定水位として維持する。 By the action was the construction, storing the treated water collecting Mizuguchi overflow pipe to the membrane separation tank as the upper limit to maintain the water level in the membrane separation tank the position of the condensing Mizuguchi as the set water level.
この状態において、膜分離ユニットには設定水位からの水深に相応して水頭圧が作用するので、水頭圧を膜分離ユニットの駆動圧力として膜分離槽内の被処理水を固液分離し、膜分離ユニットの濾過膜を透過した透過液は取出管を通して膜分離槽の外部に取り出す。 In this state, since the membrane separation unit acts head pressure Correspondingly depth from the set water level, and solid-liquid separation treatment water in the membrane separation tank as a driving pressure of the membrane separation unit to head pressure, film permeate having passed through the filtration membrane of the separation unit taken out of the membrane separation tank via the take-out tube. したがって、 Therefore,
別途に外部から動力を加えることなく被処理水の固液分離を行うことができる。 It is possible to perform solid-liquid separation of the water to be treated without adding power from the outside separately.

【0009】また、集水口を昇降することにより膜分離槽内の設定水位を変位させ、膜分離ユニットに加える水頭圧を調整して、膜分離ユニットにおける透過流束を制御する。 Moreover, the set water level in the membrane separation tank is displaced by lifting the collecting Mizuguchi, by adjusting the head pressure applied to the membrane separation unit, for controlling the permeation flux of the membrane separation unit.

【0010】また、流量調整弁を操作することにより膜分離ユニット内に与える背圧を調整し、膜分離ユニットにおける透過流束を制御する。 Further, by adjusting the back pressure to be applied to the membrane separation unit by operating the flow control valve, for controlling the permeation flux of the membrane separation unit.

【0011】 [0011]

【実施例】以下、本発明を水処理に適用した一実施例を図面に基づいて説明するが、本発明は水処理に限られるものではなく、触媒や吸着剤の固液分離にも適用可能である。 EXAMPLES Hereinafter, the present invention will be described with reference to the drawings An embodiment applied to water treatment, the present invention is not limited to water treatment, also applicable to solid-liquid separation of the catalyst and adsorbent it is.

【0012】図1において、膜分離槽21の内部には、 [0012] In FIG. 1, inside the membrane separation tank 21,
被処理水22として下水やし尿等の原水と活性汚泥との混合液を貯留しており、被処理水22の適当水深下に膜分離ユニット23を浸漬配置している。 And storing the mixed liquid of raw water and the activated sludge, such as sewage and human waste as treated water 22, it is immersed arranged membrane separation unit 23 under the appropriate depth treated water 22. この膜分離ユニット23は板状をなす複数の膜モジュールを適当間隙をおいて上下方向に平行に配置したものであり、各膜モジュールの透過液流路に連通して取出管24を設けている。 The membrane separation unit 23 are those arranged in parallel in the vertical direction a plurality of membrane modules forming the plate at a suitable gap is provided with a take-out tube 24 communicates with the permeate flow path of each membrane module .

【0013】この取出管24は、基端側で膜分離ユニット23の透過液流路に連通するとともに、先端側が流量調整弁24aを介して膜分離槽21の外部に連通しており、その先端開口24bは膜分離槽液面SLより下方に位置している。 [0013] The take-out tube 24 is in communication with the permeate channel membrane separation unit 23 at the base end side communicates with the outside of the membrane separation tank 21 distal end side via the flow regulating valve 24a, the tip opening 24b is located below the membrane separation tank liquid level SL. また、取出管24の先端開口24bは処理水貯留槽25内に位置しており、処理水貯留槽25にはその水位を一定に維持する越流管26を設けている。 The tip opening 24b of the take-out tube 24 is located in the treated water storage tank 25, the treated water storage tank 25 is provided with overflow pipe 26 to maintain the water level constant.
尚、取出管24は図1中に二点鎖線で示すようにサイホン式に形成することも可能である。 Note that removing tube 24 may be formed on the siphoning as indicated by the two-dot chain line in FIG.

【0014】膜分離槽21の底部には開閉弁27を介装した汚泥引抜管28が開口するとともに、膜分離ユニット23の下方に位置して散気管29を配置しており、散気管29には送気管30を介してブロアー31を接続している。 [0014] with sludge drawn tube 28 in the bottom portion interposed off valve 27 of the membrane separation tank 21 is opened, and to place the pipe 29 diffuser located below the membrane separation unit 23, the aeration tube 29 connecting the blower 31 through the flue 30. 尚、散気管29に代えて機械的な攪拌翼を持った攪拌装置を設置することも可能である。 It is also possible to provide a stirring device having a mechanical agitating blades in place of the aeration tube 29.

【0015】膜分離槽21は隣接する流量調整槽32にオーバーフロー管33を介して連通しており、オーバーフロー管33は集水口33aが膜分離槽21内の膜分離ユニット23より上方の適当位置に開口し、排出口33 The membrane separation tank 21 is communicated via the overflow pipe 33 to the adjacent flow regulating tank 32, the overflow pipe 33 is suitably located in the above the membrane separation unit 23 in the collecting Mizuguchi 33a is the membrane separation tank 21 open, the discharge port 33
bが流量調整槽32内に開口している。 b is opened to the flow rate adjusting tank 32. また、オーバーフロー管33の途中には蛇腹部33cを上下方向に伸縮自在に設けており、集水口33aは上下に出退するシリンダ装置34が保持している。 Further, in the middle of the overflow pipe 33 is provided telescopically bellows portion 33c in the vertical direction, the collecting Mizuguchi 33a cylinder device 34 for projecting and retracting vertically holds. 尚、オーバーフロー管3 Incidentally, an overflow pipe 3
3はゴムホース等の可撓性を有する部材で形成することも可能である。 3 can also be formed of a member having flexibility rubber hose or the like.

【0016】流量調整槽32には上部に原水供給管35 The raw water supply pipe 35 to the top to the flow regulation tank 32
が開口し、底部に循環ポンプ36を介装した循環管37 Circulation pipe 37 but open, is interposed circulation pump 36 on the bottom
が開口しており、循環管37は先端側が膜分離槽21内で開口している。 There is open, circulation pipe 37 leading end side is opened in the membrane separation tank 21.

【0017】以下、上記構成における作用を説明する。 [0017] Hereinafter, the operation in the above configuration.
流量調整槽32において原水供給管35から供給する原水を一端貯留し、循環ポンプ36により循環管37を通して膜分離槽21に供給する。 Raw water is once stored the supplied from the raw water supply pipe 35 in the flow regulation tank 32 is supplied to the membrane separation tank 21 through the circulation pipe 37 by the circulation pump 36. 膜分離槽21においては、余剰な被処理水22をオーバーフロー管33を通して流量調整槽32に戻すことにより、オーバーフロー管33の集水口33aを上限として被処理水22を貯留し、膜分離槽21内の水位を集水口33aの位置を設定水位として常に維持する。 Membrane in a separation tank 21, by returning excess treated water 22 to the flow rate regulating tank 32 through the overflow pipe 33, and storing the treated water 22 collecting Mizuguchi 33a of the overflow pipe 33 as an upper limit, the membrane separation tank 21 always maintain the water level of the position of the condensing water outlet 33a as the set water level.

【0018】一方、ブロアー31により送気管30を通して散気管29に空気を供給し、散気管29から上方に向けて曝気する。 Meanwhile, by supplying air to the aeration tube 29 through the air tube 30 by a blower 31, aerated towards the aeration tube 29 upwardly. この曝気した空気のエアリフト作用により生起する上昇攪拌流によって、膜分離槽21内の被処理水22を攪拌し、かつ槽内で循環させる。 By elevated stirred flow that occurs by air lift action of the aeration air, stirring the treated water 22 in the membrane separation tank 21, and is circulated in a bath.

【0019】この状態において、膜分離ユニット23には設定水位SLと取出管先端開口24bとの差に相当する水頭圧が作用するので、水頭圧を膜分離ユニット23 [0019] In this state, since the membrane separation unit 23 acts water head pressure corresponding to the difference between the set water level SL and the retrieval tube distal end opening 24b, membrane head pressure separation unit 23
の駆動圧力として膜分離槽21内の被処理水22を固液分離する。 Solid-liquid separating the treated water 22 within the membrane separation tank 21 as the driving pressure. 膜分離ユニット23の濾過膜を透過した透過液は取出管24を通して膜分離槽21の外部に取り出し、処理水貯留槽25に貯留する。 Permeate having passed through the filtration membrane of the membrane separation unit 23 is taken out outside of the membrane separation tank 21 through the take-out tube 24, and stored in the treated water storage tank 25. また、膜分離ユニット23の膜面に付着するケーキ層は上述の上昇攪拌流によって膜面から剥離させ、再び槽内で循環させる。 Further, the cake layer adhering to the membrane surface of the membrane separation unit 23 is peeled from the membrane surface by the aforementioned increase in agitation flow is circulated again in the tank.

【0020】そして、膜分離ユニット23における透過流束を調整する場合(初期設定時や駆動圧力の不足時等)には、シリンダ装置34によって集水口33aを昇降させることにより、膜分離槽21内の設定水位SLを変位させ、膜分離ユニット23に加える水頭圧を制御する。 [0020] Then, in the case (when the lack of initial setting and a drive pressure, etc.) to adjust the permeation flux in membrane separation unit 23, by lowering the current Mizuguchi 33a by the cylinder device 34, the membrane separation tank 21 is the displacement of the set water level SL, to control the water head pressure applied to the membrane separation unit 23. あるいは、取出管24に介装した流量調整弁24a Alternatively, the flow control valve 24a which is interposed in the take-out tube 24
を操作することにより、膜分離ユニット23内に与える背圧を調整し、膜分離ユニット23における透過流束を制御する。 By manipulating, by adjusting the back pressure to be supplied to the membrane separation unit 23, which controls the permeation flux in membrane separation unit 23.

【0021】膜分離槽21に残留する余剰汚泥等の固形分は開閉弁27を操作して汚泥引抜管28を通して槽外に排出する。 The solids content of such excess sludge remaining in the membrane separation tank 21 is discharged to the outside of the tank through the sludge drawn pipe 28 by operating the on-off valve 27.

【0022】 [0022]

【発明の効果】以上述べたように本発明によれば、膜分離槽内の被処理水を設定水位に維持して、膜分離ユニットに設定水位からの水深に相応する水頭圧を作用させることにより、外部から別途に動力を加えることなく被処理水の固液分離を行うことができ、膜分離操作にかかるランニングコストの低減を図ることができる。 According to the present invention as described above, according to the present invention, by keeping the water to be treated in the membrane separation tank to set water level, exerting a head pressure corresponding to the water depth from the set water level in the membrane separation unit Accordingly, it is possible to perform solid-liquid separation of the water to be treated without adding power separately from the outside, it is possible to reduce the running cost of membrane separation operation. また、集水口の昇降により水頭圧を調整するか、流量調整弁の操作により膜分離ユニット内に与える背圧を調整することによって、膜分離ユニットにおける透過流束を制御することができる。 Further, either adjust the water head pressure by the lifting of Mizuguchi current, by adjusting the back pressure to be applied to the membrane separation unit by operating the flow control valve, it is possible to control the permeation flux in membrane separation unit.

【図面の簡単な説明】 BRIEF DESCRIPTION OF THE DRAWINGS

【図1】本発明の一実施例における浸漬型濾過装置の全体構成図である。 1 is an overall configuration diagram of an immersion type filtration apparatus according to an embodiment of the present invention.

【図2】従来の浸漬型濾過装置の全体構成図である。 Figure 2 is an overall configuration diagram of a conventional immersion type filtration apparatus.

【符号の説明】 DESCRIPTION OF SYMBOLS

21 膜分離槽 23 膜分離ユニット 24 取出管 24a 流量調整弁 32 流量調整槽 33 オーバーフロー管 33a 集水口 36 循環ポンプ 37 循環管 21 the membrane separation tank 23 the membrane separation unit 24 take-out tube 24a flow regulating valve 32 flow regulation tank 33 the overflow pipe 33a Collection Mizuguchi 36 circulation pump 37 circulation pipe

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平4−341394(JP,A) 特開 平5−168864(JP,A) 実開 昭58−171300(JP,U) (58)調査した分野(Int.Cl. 7 ,DB名) B01D 61/18 B01D 63/08 C02F 1/44 ────────────────────────────────────────────────── ─── of the front page continued (56) reference Patent flat 4-341394 (JP, a) JP flat 5-168864 (JP, a) JitsuHiraku Akira 58-171300 (JP, U) (58) were investigated field (Int.Cl. 7, DB name) B01D 61/18 B01D 63/08 C02F 1/44

Claims (2)

    (57)【特許請求の範囲】 (57) [the claims]
  1. 【請求項1】 被処理水が流入する膜分離槽内に膜分離 1. A membrane separation in the membrane separation tank in which water to be treated flows
    ユニットを適当水深下に浸漬配置し、集水口が膜分離ユ The unit was immersed placed under appropriate depth, current Mizuguchi membrane separation Yoo
    ニットより上方の適当位置に開口するオーバーフロー管 Overflow pipe opening into proper position above than knit
    を設け、基端側が膜分離ユニットの透過液流路に連通す The provided base end through with the permeate channel membrane separation unit
    るとともに、先端側が膜分離槽の外部において膜分離槽 Rutotomoni tip side membrane separation tank outside the membrane separation tank
    液面より下方位置に開口する取出管を設け、オーバーフ The take-out pipe provided to open the liquid level in the lower position, overflow
    ロー管の集水口を上下に昇降自在に設けたことを特徴とする浸漬型濾過装置。 Immersion type filtration apparatus, characterized in that provided vertically movably collecting low tube Mizuguchi vertically.
  2. 【請求項2】 被処理水が流入する膜分離槽内に膜分離 2. A membrane separation in the membrane separation tank in which water to be treated flows
    ユニットを適当水深下に浸漬配置し、集水口が膜分離ユ The unit was immersed placed under appropriate depth, current Mizuguchi membrane separation Yoo
    ニットより上方の適当位置に開口するオーバーフロー管 Overflow pipe opening into proper position above than knit
    を設け、基端側が膜分離ユニットの透過液流路に連通す The provided base end through with the permeate channel membrane separation unit
    るとともに、先端側が膜分離槽の外部において膜分離槽 Rutotomoni tip side membrane separation tank outside the membrane separation tank
    液面より下方位置に開口する取出管を設け、取出管の先 The take-out pipe provided to open the liquid level in the lower position, ahead of the take-out tube
    端側に流量調整弁を設けたことを特徴とする浸漬型濾過装置。 Immersion type filtration apparatus characterized in that a flow control valve on the end side.
JP5009656A 1993-01-25 1993-01-25 Immersion type filtration apparatus Expired - Fee Related JP3010951B2 (en)

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Application Number Priority Date Filing Date Title
JP5009656A JP3010951B2 (en) 1993-01-25 1993-01-25 Immersion type filtration apparatus

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Application Number Priority Date Filing Date Title
JP5009656A JP3010951B2 (en) 1993-01-25 1993-01-25 Immersion type filtration apparatus

Publications (2)

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JPH06218237A JPH06218237A (en) 1994-08-09
JP3010951B2 true JP3010951B2 (en) 2000-02-21

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