JP2002331205A - Lateral flow type moving bed type filtration device - Google Patents
Lateral flow type moving bed type filtration deviceInfo
- Publication number
- JP2002331205A JP2002331205A JP2001140817A JP2001140817A JP2002331205A JP 2002331205 A JP2002331205 A JP 2002331205A JP 2001140817 A JP2001140817 A JP 2001140817A JP 2001140817 A JP2001140817 A JP 2001140817A JP 2002331205 A JP2002331205 A JP 2002331205A
- Authority
- JP
- Japan
- Prior art keywords
- water level
- water
- filter medium
- control valve
- air
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D24/00—Filters comprising loose filtering material, i.e. filtering material without any binder between the individual particles or fibres thereof
- B01D24/46—Regenerating the filtering material in the filter
- B01D24/4668—Regenerating the filtering material in the filter by moving the filtering element
- B01D24/4689—Displacement of the filtering material to a compartment of the filtering device for regeneration
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtration Of Liquid (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、横流型移動床式ろ
過装置に関し、さらに詳しくは、不必要な洗浄排水を抑
制できると共に圧縮空気の消費を抑制することができる
横流型移動床式ろ過装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cross-flow type moving bed type filtration apparatus, and more particularly, to a cross-flow type moving bed type filtration apparatus capable of suppressing unnecessary washing and drainage and suppressing consumption of compressed air. About.
【０００２】[0002]
【従来の技術】従来の横流型移動床式ろ過装置は、例え
ば特表２０００−５１６１３５号公報に開示されてい
る。2. Description of the Related Art A conventional cross-flow type moving bed type filtration apparatus is disclosed, for example, in Japanese Patent Publication No. 2000-516135.
【０００３】図１０は、従来の横流型移動床式ろ過装置
の一例を示す構成図である。この横流型移動床式ろ過装
置５００は、ろ材（砂）１０が下部に堆積したろ過槽１
と、ろ過槽１の下部側壁に設置された流入チャンバー２
と、流入チャンバー２から流入した原水がろ材１０を通
過してから流出するように流入チャンバー２の反対側の
側壁に設置された流出チャンバー３と、流出チャンバー
３から排出する処理水量を調節するための処理水調節弁
５と、ろ過槽１の底部付近のろ材１０を圧縮空気により
水と共にろ材洗浄器２０に搬送するエアリフトポンプ６
およびエアリフト管７と、エアリフトポンプ６に供給す
る圧縮空気量を調節するための空気調節弁８と、ろ過槽
１の上部に設置され且つ搬送されてきた圧縮空気と水と
ろ材１０を分離して圧縮空気は排気し水は排水しろ材１
０は落下させるろ材洗浄器２０と、ろ過槽１内の水位Ｗ
Ｌを計測する水位計３０と、横流型移動床式ろ過装置５
００の運転を制御する制御装置４５とを具備して構成さ
れている。FIG. 10 is a block diagram showing an example of a conventional cross-flow type moving bed type filtration apparatus. This horizontal flow type moving bed type filtration device 500 is a filter tank 1 in which a filter medium (sand) 10 is deposited at a lower portion.
And an inflow chamber 2 installed on the lower side wall of the filtration tank 1
To adjust the amount of treated water discharged from the outflow chamber 3 and the outflow chamber 3 installed on the opposite side wall of the inflow chamber 2 so that the raw water flowing from the inflow chamber 2 passes through the filter medium 10 and then flows out. And an air lift pump 6 for transporting the filter medium 10 near the bottom of the filtration tank 1 to the filter medium washer 20 together with water by compressed air.
And an air lift pipe 7, an air control valve 8 for adjusting the amount of compressed air supplied to the air lift pump 6, and separating the compressed air, water and the filter medium 10 installed and conveyed above the filtration tank 1. Exhaust compressed air and drain water
0 is a filter medium washer 20 to be dropped and a water level W in the filtration tank 1.
Water level gauge 30 for measuring L and cross-flow type moving bed type filtration device 5
00 and a control device 45 for controlling the operation of the vehicle.
【０００４】ろ過槽１は、角形筒状である。ろ材１０を
エアリフトポンプ６で集めやすくするため、ろ過槽１の
底部は、テーパ状になっている。[0004] The filtration tank 1 has a rectangular cylindrical shape. The bottom of the filtration tank 1 is tapered to facilitate collection of the filter medium 10 by the air lift pump 6.
【０００５】エアリフトポンプ６には、空気調整弁８を
介して、圧縮空気が供給される。この圧縮空気は、エア
リフト管７を上昇し、ろ材洗浄器２０から排気される。
この圧縮空気の流れに巻き込まれるように、エアリフト
ポンプ６に水が吸い込まれ、ろ材洗浄器２０から排水さ
れる。そして、この水の流れに巻き込まれるように、ろ
材１０がエアリフトポンプ６に吸い込まれ、ろ材洗浄器
２０に搬送される。[0005] Compressed air is supplied to the air lift pump 6 via an air regulating valve 8. This compressed air rises in the air lift pipe 7 and is exhausted from the filter medium washing device 20.
Water is sucked into the air lift pump 6 so as to be involved in the flow of the compressed air, and drained from the filter medium washing device 20. Then, the filter medium 10 is sucked into the air lift pump 6 and conveyed to the filter medium washing device 20 so as to be caught in this flow of water.
【０００６】ろ材洗浄器２０は、外筒２１と、その外筒
２１の内側に設置された内筒２２と、その内筒２２から
外部へ連通する洗浄排水管２３とから構成される。[0006] The filter medium washing device 20 includes an outer cylinder 21, an inner cylinder 22 installed inside the outer cylinder 21, and a washing drainage pipe 23 communicating from the inner cylinder 22 to the outside.
【０００７】原水は、流入チャンバー２によって、ろ材
１０に広く分配され、ろ材１０内を横に流れ、集水スト
レーナ４を介して、流出チャンバー３に流出する。この
間に、原水はろ過される。流出チャンバー３に流出した
処理水は、処理水調節弁５を通じて、図示せぬ処理水槽
へ流出する。The raw water is widely distributed to the filter medium 10 by the inflow chamber 2, flows laterally in the filter medium 10, and flows out to the outflow chamber 3 via the water collecting strainer 4. During this time, the raw water is filtered. The treated water flowing out to the outflow chamber 3 flows out to a treated water tank (not shown) through the treated water control valve 5.
【０００８】ろ過槽１の下部のろ材１０は、エアリフト
ポンプ６およびエアリフト管７により、ろ材洗浄器２０
に搬送され、ろ材洗浄器２０から、ろ過槽１の下部に堆
積したろ材１０の上面に落下する。この間に、ろ材１０
に付着した濁質成分が、ろ材１０から剥離する。そし
て、剥離した濁質成分が混じった水が、オーバーフロー
によりオリフィス２４から洗浄排水管２３に流れ込み、
排水される。[0008] The filter medium 10 at the lower part of the filter tank 1 is filtered by an air lift pump 6 and an air lift pipe 7 into a filter medium washing device
And falls from the filter medium washer 20 onto the upper surface of the filter medium 10 deposited at the lower part of the filtration tank 1. During this time, filter media 10
The turbid component adhering to the filter material is separated from the filter medium 10. Then, the water mixed with the separated turbid component flows from the orifice 24 into the cleaning drainage pipe 23 by overflow,
Drained.
【０００９】図１１は、横流型移動床式ろ過装置５００
の運転方法を示すフロー図である。ステップＰ１では、
処理水調節弁５を全閉にする。ステップＰ２では、流入
チャンバー２に原水を供給する。ステップＰ３’では、
ろ過槽１内の水位ＷＬが設定水位Ｈに到達するまで待
ち、水位ＷＬが設定水位Ｈに到達したらステップＰ４へ
進む。ステップＰ４では、エアリフトポンプ６を起動す
る。すなわち、空気調節弁８を全開にしてエアリフトポ
ンプ６に圧縮空気を供給する。FIG. 11 shows a cross-flow type moving bed type filtration device 500.
It is a flowchart which shows the driving method of. In step P1,
The treated water control valve 5 is fully closed. In Step P2, raw water is supplied to the inflow chamber 2. In step P3 ',
Wait until the water level WL in the filtration tank 1 reaches the set water level H, and when the water level WL reaches the set water level H, proceed to Step P4. In Step P4, the air lift pump 6 is started. That is, the air control valve 8 is fully opened to supply the compressed air to the air lift pump 6.
【００１０】ステップＰ６では、処理水調節弁５を現状
の開度よりも所定量だけ開く。これにより、処理水が排
出され始めるか又は処理水の排出量が増加する。In step P6, the treated water control valve 5 is opened by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water starts or the discharged amount of the treated water increases.
【００１１】ステップＰ７’では、ろ過槽１内の水位Ｗ
Ｌを計測し、設定水位Ｈより低くなっていたらステップ
Ｐ８へ進み、設定水位Ｈより高くなっていたらステップ
Ｐ９へ進み、設定水位Ｈが維持されていたらステップＰ
１０へ進む。In step P7 ', the water level W in the filtration tank 1
L is measured, and if it is lower than the set water level H, the process proceeds to Step P8. If it is higher than the set water level H, the process proceeds to Step P9. If the set water level H is maintained, the process proceeds to Step P8.
Proceed to 10.
【００１２】ステップＰ８では、処理水調節弁５を現状
の開度よりも所定量だけ閉じる。これにより、処理水の
排出が止まるか又は処理水の排出量が減少する。そし
て、前記ステップＰ７’に戻る。In step P8, the treated water control valve 5 is closed by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water stops or the discharge amount of the treated water decreases. Then, the process returns to Step P7 '.
【００１３】ステップＰ９では、処理水調節弁５が限界
開度に達していなかったら前記ステップＰ６に戻り、限
界開度に達していたらステップＰ１１へ進む。In step P9, if the treated water control valve 5 has not reached the limit opening, the process returns to step P6, and if it has reached the limit opening, the process proceeds to step P11.
【００１４】ステップＰ１０では、ろ過処理を停止する
指示があるまでは前記ステップＰ７’に戻り、ろ過処理
を停止する指示があったらステップＰ１１へ進む。In step P10, the process returns to step P7 'until there is an instruction to stop the filtration process, and proceeds to step P11 when there is an instruction to stop the filtration process.
【００１５】ステップＰ１１では、原水の供給を停止す
る。ステップＰ１２では、エアリフトポンプ６を停止す
る。すなわち、空気調節弁８を全閉にしてエアリフトポ
ンプ６への圧縮空気の供給を止める。ステップＰ１３で
は、処理水調節弁５を全閉にする。In step P11, the supply of raw water is stopped. In Step P12, the air lift pump 6 is stopped. That is, the supply of compressed air to the air lift pump 6 is stopped by fully closing the air control valve 8. In Step P13, the treated water control valve 5 is fully closed.
【００１６】図１２は、ろ過槽１のろ過抵抗ΔＰｓの変
化を示す例示図である。原水の濁質濃度が高くなると、
ろ材１０間が詰まるために、ろ過抵抗ΔＰｓは高くな
る。FIG. 12 is an illustrative view showing a change in the filtration resistance ΔPs of the filtration tank 1. When the turbid concentration of raw water increases,
Since the space between the filter media 10 is clogged, the filtration resistance ΔPs increases.
【００１７】図１３は、処理水調節弁５の開度の変化を
示す例示図である。ろ過抵抗ΔＰｓが高くなると、処理
水調節弁５の開度が大きくなる。FIG. 13 is an illustrative view showing a change in the opening degree of the treated water control valve 5. As the filtration resistance ΔPs increases, the opening of the treated water control valve 5 increases.
【００１８】図１４は、ろ過槽１内の水位ＷＬの変化を
示す例示図である。水位ＷＬは、設定水位Ｈに維持され
る。これは、ろ過抵抗ΔＰｓの変化に応じて処理水調節
弁５の開度を調節するためである。FIG. 14 is an exemplary diagram showing a change in the water level WL in the filtration tank 1. The water level WL is maintained at the set water level H. This is to adjust the opening of the treated water control valve 5 according to the change in the filtration resistance ΔPs.
【００１９】図１５は、空気調節弁８の開度の変化を示
す例示図である。空気調節弁８の開度は一定である。FIG. 15 is an exemplary view showing a change in the opening degree of the air control valve 8. As shown in FIG. The opening of the air control valve 8 is constant.
【００２０】[0020]
【発明が解決しようとする課題】上記従来の横流型移動
床式ろ過装置５００では、原水の濁質濃度の変化による
ろ槽抵抗ΔＰｓの変動を処理水調節弁５の開度により吸
収し、水位ＷＬを一定に制御している。このとき、原水
が高濁質濃度になっても対応できるように、設定水位Ｈ
を高めに設定している。また、空気調節弁８の開度を大
きめに設定している。しかし、設定水位Ｈが高めに設定
されていると、水位ＷＬも高めに維持されるため、水位
ＷＬとオリフィス２４の高さＥＬの水位差ｈで決まる洗
浄排水量が多めになる。つまり、低濁質濃度および中濁
質濃度の時に、洗浄排水が不必要に多量になり、原水回
収効率が悪くなる問題点がある。また、空気調節弁８の
開度が大きめに設定されていると、圧縮空気の消費量が
多めになる。つまり、低濁質濃度および中濁質濃度の時
に、圧縮空気が不必要に多量に消費される問題点があ
る。そこで、本発明の目的は、不必要な洗浄排水を抑制
できると共に圧縮空気の消費を抑制することができる横
流型移動床式ろ過装置を提供することにある。In the above-mentioned conventional cross-flow type moving bed filtration device 500, the fluctuation of the filter tank resistance ΔPs due to the change of the turbid concentration of the raw water is absorbed by the opening of the treated water control valve 5, and the water level is reduced. WL is controlled to be constant. At this time, the set water level H is set so that even if the raw water has a high turbid concentration,
Is set higher. Further, the opening of the air control valve 8 is set to be relatively large. However, if the set water level H is set high, the water level WL is also maintained at a high level, so that the amount of cleaning drainage determined by the water level difference h between the water level WL and the height EL of the orifice 24 increases. That is, when the concentration of the turbidity is low or the concentration of the turbidity is low, the amount of washing wastewater becomes unnecessarily large, and there is a problem that the raw water recovery efficiency is deteriorated. In addition, if the opening of the air control valve 8 is set to be relatively large, the consumption of the compressed air becomes large. In other words, there is a problem that the compressed air is unnecessarily consumed in large amounts at low turbidity concentrations and medium turbidity concentrations. Accordingly, an object of the present invention is to provide a cross-flow type moving bed type filtration device capable of suppressing unnecessary washing and drainage and suppressing the consumption of compressed air.
【００２１】[0021]
【課題を解決するための手段】第１の観点では、本発明
は、原水中の濁質成分を付着捕捉するためのろ材（１
０）が下部に堆積したろ過槽（１）と、ろ過槽（１）の
下部側壁に設置され原水をろ過槽（１）に供給するため
の流入チャンバー（２）と、流入チャンバー（２）の反
対側のろ過槽（１）の下部側壁に設置され処理水を排出
するための流出チャンバー（３）と、流出チャンバー
（３）から排出する処理水量を調節するための処理水調
節弁（５）と、ろ過槽（１）の底部付近のろ材（１０）
を圧縮空気により水と共にろ材洗浄器（２０）に搬送す
るエアリフトポンプ（６）およびエアリフト管（７）
と、エアリフトポンプ（６）に供給する圧縮空気量を調
節するための空気調節弁（８）と、ろ過槽（１）の上部
に設置され且つ搬送されてきた圧縮空気と水とろ材（１
０）から圧縮空気とろ材（１０）から離脱した濁質成分
を含む水とろ材（１０）とを分離して、圧縮空気は排気
し、ろ材（１０）から離脱した濁質成分を含む水は排水
し、ろ材（１０）は落下させるろ材洗浄器（２０）と、
ろ過槽（１）内の水位（ＷＬ）を計測する水位計（３
０）と、運転を制御する制御装置（４０）とを具備して
構成され、前記制御装置（４０）は、高濁質濃度に対応
した設定水位（Ｈ３）とそれより低い濁質濃度に対応し
た設定水位（Ｈ１，Ｈ２）とを設定され、また、高濁質
濃度に対応した空気調節弁（８）の開度（Ｏ３）とそれ
より低い濁質濃度に対応した空気調節弁（８）の開度
（Ｏ１，Ｏ２）とを設定され、まず、高濁質濃度より低
い濁質濃度に対応した空気調節弁（８）の開度（Ｏ１，
Ｏ２）とした状態で水位計（３０）で計測した水位（Ｗ
Ｌ）が高濁質濃度より低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）に一致するように処理水調節弁（５）の
開度を制御し、処理水調節弁（５）の開度を全開にして
も水位計（３０）で計測した水位（ＷＬ）が高濁質濃度
より低い濁質濃度に対応した設定水位（Ｈ１，Ｈ２）よ
り高くなる場合は、高濁質濃度に対応した空気調節弁
（８）の開度（Ｏ３）とした状態で水位計（３０）で計
測した水位（ＷＬ）が高濁質濃度に対応した設定水位
（Ｈ３）に一致するように処理水調節弁（５）の開度を
制御することを特徴とする横流型移動床式ろ過装置を提
供する。上記第１の観点による横流型移動床式ろ過装置
では、原水の濁質濃度に応じて設定水位を多段階に設定
し、これにろ過槽の水位が一致するように処理水の排出
量を調整するから、原水の濁質濃度が低い時には、ろ過
槽の水位で決まる洗浄排水量が少なめになる。つまり、
濁質濃度が低い時に洗浄排水が不必要に多量に排水され
ることがなくなり、原水回収効率を向上できる。また、
エアリフトポンプへ供給する圧縮空気量を原水の濁質濃
度に応じて多段階に調節するから、原水の濁質濃度が低
い時には、圧縮空気の消費量が少なめになる。つまり、
不必要な圧縮空気の消費を防止することが出来る。According to a first aspect, the present invention provides a filter medium (1) for adhering and capturing turbid components in raw water.
0) is deposited at the lower part, an inflow chamber (2) installed on the lower side wall of the filtration tank (1) for supplying raw water to the filtration tank (1), and an inflow chamber (2). An outflow chamber (3) installed on the lower side wall of the filtration tank (1) on the opposite side for discharging treated water, and a treated water control valve (5) for regulating the amount of treated water discharged from the outflow chamber (3). And the filter medium (10) near the bottom of the filtration tank (1)
Lift pump (6) and air lift pipe (7) for transporting to the filter media washer (20) together with water by compressed air
An air control valve (8) for adjusting the amount of compressed air supplied to the air lift pump (6); and compressed air, water and a filter medium (1) installed and conveyed above the filtration tank (1).
0), the compressed air and the water containing the turbid component separated from the filter medium (10) and the filter medium (10) are separated, the compressed air is exhausted, and the water containing the turbid component separated from the filter medium (10) is A filter medium washer (20) for draining and dropping the filter medium (10);
Water level meter (3) that measures the water level (WL) in the filtration tank (1)
0) and a control device (40) for controlling operation, wherein the control device (40) corresponds to a set water level (H3) corresponding to a high turbid concentration and a turbid concentration lower than that. The set water level (H1, H2) is set, and the opening degree (O3) of the air control valve (8) corresponding to the high turbidity concentration and the air control valve (8) corresponding to the lower turbidity concentration Of the air control valve (8) corresponding to a turbidity concentration lower than the high turbidity concentration (O1, O2).
O2) and the water level (W) measured by the water level meter (30)
L) controls the opening of the treated water control valve (5) so that the set water level (H1, H2) corresponding to the turbidity concentration lower than the high turbidity concentration, and opens the treated water control valve (5). If the water level (WL) measured by the water level meter (30) becomes higher than the set water level (H1, H2) corresponding to the turbidity concentration lower than the high turbidity concentration even when the degree is fully opened, it corresponds to the high turbidity concentration The treated water is adjusted so that the water level (WL) measured by the water level gauge (30) in the state where the opening degree (O3) of the air control valve (8) is adjusted matches the set water level (H3) corresponding to the high turbidity concentration. Provided is a cross-flow type moving bed type filtration device characterized by controlling an opening of a valve (5). In the cross-flow type moving bed filtration device according to the first aspect, the set water level is set in multiple stages according to the turbid concentration of the raw water, and the discharge amount of the treated water is adjusted so that the water level in the filtration tank matches the water level. Therefore, when the turbid concentration of raw water is low, the amount of washing wastewater determined by the water level of the filtration tank becomes smaller. That is,
When the turbid concentration is low, the washing wastewater is not unnecessarily discharged in a large amount, and the raw water recovery efficiency can be improved. Also,
Since the amount of compressed air supplied to the air lift pump is adjusted in multiple stages according to the turbid concentration of the raw water, the consumption of compressed air is reduced when the turbid concentration of the raw water is low. That is,
Unnecessary consumption of compressed air can be prevented.
【００２２】第２の観点では、本発明は、原水中の濁質
成分を付着捕捉するためのろ材（１０）が下部に堆積し
たろ過槽（１）と、ろ過槽（１）の下部側壁に設置され
原水をろ過槽（１）に供給するための流入チャンバー
（２）と、流入チャンバー（２）の反対側のろ過槽
（１）の下部側壁に設置され処理水を排出するための流
出チャンバー（３）と、流出チャンバー（３）から排出
する処理水量を調節するための処理水調節弁（５）と、
ろ過槽（１）の底部付近のろ材（１０）を圧縮空気によ
り水と共にろ材洗浄器（２０）に搬送するエアリフトポ
ンプ（６）およびエアリフト管（７）と、エアリフトポ
ンプ（６）に供給する圧縮空気量を調節するための空気
調節弁（８）と、ろ過槽（１）の上部に設置され且つ搬
送されてきた圧縮空気と水とろ材（１０）から圧縮空気
とろ材（１０）から離脱した濁質成分を含む水とろ材
（１０）とを分離して、圧縮空気は排気し、ろ材（１
０）から離脱した濁質成分を含む水は排水し、ろ材（１
０）は落下させるろ材洗浄器（２０）と、ろ過槽（１）
内の水位（ＷＬ）を計測する水位計（３０）と、運転を
制御する制御装置（４０）とを具備して構成され、前記
制御装置（４０）は、高濁質濃度に対応した設定水位
（Ｈ３）とそれより低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）とを設定され、まず、水位計（３０）で
計測した水位（ＷＬ）が高濁質濃度より低い濁質濃度に
対応した設定水位（Ｈ１，Ｈ２）に一致するように処理
水調節弁（５）の開度を制御し、処理水調節弁（５）の
開度を全開にしても水位計（３０）で計測した水位（Ｗ
Ｌ）が高濁質濃度より低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）より高くなる場合は、水位計（３０）で
計測した水位（ＷＬ）が高濁質濃度に対応した設定水位
（Ｈ３）に一致するように処理水調節弁（５）の開度を
制御することを特徴とする横流型移動床式ろ過装置を提
供する。上記第２の観点による横流型移動床式ろ過装置
では、原水の濁質濃度に応じて設定水位を多段階に設定
し、これにろ過槽の水位が一致するように処理水の排出
量を調整するから、原水の濁質濃度が低い時には、ろ過
槽の水位で決まる洗浄排水量が少なめになる。つまり、
濁質濃度が低い時に洗浄排水が不必要に多量に排水され
ることがなくなり、原水回収効率を向上できる。According to a second aspect, the present invention provides a filter tank (1) in which a filter medium (10) for adhering and capturing turbid components in raw water is deposited at a lower portion, and a lower side wall of the filter tank (1). An inflow chamber (2) installed for supplying raw water to the filtration tank (1), and an outflow chamber installed on the lower side wall of the filtration tank (1) opposite to the inflow chamber (2) for discharging treated water. (3) a treated water control valve (5) for regulating the amount of treated water discharged from the outflow chamber (3);
An air lift pump (6) and an air lift pipe (7) for transporting the filter medium (10) near the bottom of the filtration tank (1) together with water to the filter medium washer (20) by compressed air, and compression supplied to the air lift pump (6). An air control valve (8) for adjusting the amount of air, and separated from the compressed air and the filter medium (10) from the compressed air, water and the filter medium (10) installed and transported above the filtration tank (1). The water containing the turbid component is separated from the filter medium (10), and the compressed air is exhausted.
The water containing the turbid component released from (0) is drained, and the filter medium (1)
0) is a filter medium washer (20) to be dropped and a filtration tank (1)
A water level meter (30) for measuring a water level (WL) in the inside, and a control device (40) for controlling the operation, wherein the control device (40) is a set water level corresponding to the high turbidity concentration. (H3) and a set water level (H1, H2) corresponding to a lower turbidity concentration are set. First, the water level (WL) measured by the water level meter (30) is set to a turbidity concentration lower than the high turbidity concentration. The opening of the treated water control valve (5) is controlled so as to match the corresponding set water level (H1, H2), and the water level meter (30) measures even if the opening of the treated water control valve (5) is fully opened. Water level (W
When L) is higher than the set water level (H1, H2) corresponding to the turbidity concentration lower than the high turbidity concentration, the water level (WL) measured by the water level meter (30) is the set water level corresponding to the high turbidity concentration. A horizontal flow type moving bed type filtration device characterized by controlling the opening of the treated water control valve (5) so as to coincide with (H3). In the cross-flow type moving bed filtration device according to the second aspect, the set water level is set in multiple stages according to the turbid concentration of the raw water, and the discharge amount of the treated water is adjusted so that the water level in the filtration tank matches the water level. Therefore, when the turbid concentration of raw water is low, the amount of washing wastewater determined by the water level of the filtration tank becomes smaller. That is,
When the turbid concentration is low, the washing wastewater is not unnecessarily discharged in a large amount, and the raw water recovery efficiency can be improved.
【００２３】[0023]
【発明の実施の形態】以下、図を参照して本発明の実施
の形態を説明する。なお、これにより本発明が限定され
るものではない。Embodiments of the present invention will be described below with reference to the drawings. Note that the present invention is not limited by this.
【００２４】図１は、本発明の一実施形態にかかる横流
型移動床式ろ過装置１００の構成図である。この横流型
移動床式ろ過装置１００は、ろ材（砂）１０が下部に堆
積したろ過槽１と、ろ過槽１の下部側壁に設置された流
入チャンバー２と、流入チャンバー２から流入した原水
がろ材１０を通過してから流出するように流入チャンバ
ー２の反対側の側壁に設置された流出チャンバー３と、
流出チャンバー３から排出する処理水量を調節するため
の処理水調節弁５と、ろ過槽１の底部付近のろ材１０を
圧縮空気により水と共にろ材洗浄器２０に搬送するエア
リフトポンプ６およびエアリフト管７と、エアリフトポ
ンプ６に供給する圧縮空気量を調節するための空気調節
弁８と、ろ過槽１の上部に設置され且つ搬送されてきた
圧縮空気と水とろ材１０を分離して圧縮空気は排気し水
は排水しろ材１０は落下させるろ材洗浄器２０と、ろ過
槽１内の水位ＷＬを計測する水位計３０と、横流型移動
床式ろ過装置１００の運転を制御する制御装置４０とを
具備して構成されている。FIG. 1 is a configuration diagram of a cross flow type moving bed type filtration apparatus 100 according to an embodiment of the present invention. The horizontal flow type moving bed type filtration device 100 includes a filter tank 1 in which a filter medium (sand) 10 is deposited at a lower portion, an inflow chamber 2 installed on a lower side wall of the filter tank 1, and raw water flowing from the inflow chamber 2. An outflow chamber 3 installed on the opposite side wall of the inflow chamber 2 so as to flow out after passing through 10;
A treated water control valve 5 for regulating the amount of treated water discharged from the outflow chamber 3, an air lift pump 6 and an air lift pipe 7 for transporting the filter medium 10 near the bottom of the filtration tank 1 together with water to the filter medium washing device 20 by compressed air; An air control valve 8 for adjusting the amount of compressed air supplied to the air lift pump 6, and a compressed air, water and filter medium 10 installed and conveyed above the filtration tank 1 and exhausting the compressed air. The apparatus includes a filter medium washing device 20 for dropping the filter medium 10 for dropping water, a water level meter 30 for measuring the water level WL in the filtration tank 1, and a control device 40 for controlling the operation of the horizontal flow type moving bed type filtration device 100. It is configured.
【００２５】ろ過槽１は、角形筒状である。ろ材１０を
エアリフトポンプ６で集めやすくするため、ろ過槽１の
底部は、テーパ状になっている。The filtration tank 1 has a rectangular cylindrical shape. The bottom of the filtration tank 1 is tapered so that the filter medium 10 can be easily collected by the air lift pump 6.
【００２６】エアリフトポンプ６には、空気調整弁８を
介して、圧縮空気が供給される。この圧縮空気は、エア
リフト管７を上昇し、ろ材洗浄器２０から排気される。
この圧縮空気の流れに巻き込まれるように、エアリフト
ポンプ６に水が吸い込まれ、ろ材洗浄器２０から排水さ
れる。そして、この水の流れに巻き込まれるように、ろ
材１０がエアリフトポンプ６に吸い込まれ、ろ材洗浄器
２０に搬送される。Compressed air is supplied to the air lift pump 6 via an air regulating valve 8. This compressed air rises in the air lift pipe 7 and is exhausted from the filter medium washing device 20.
Water is sucked into the air lift pump 6 so as to be involved in the flow of the compressed air, and drained from the filter medium washing device 20. Then, the filter medium 10 is sucked into the air lift pump 6 and conveyed to the filter medium washing device 20 so as to be caught in this flow of water.
【００２７】ろ材洗浄器２０は、外筒２１と、その外筒
２１の内側に設置された内筒２２と、その内筒２２から
外部へ連通する洗浄排水管２３とから構成される。The filter medium washing device 20 comprises an outer cylinder 21, an inner cylinder 22 installed inside the outer cylinder 21, and a washing drainage pipe 23 communicating from the inner cylinder 22 to the outside.
【００２８】原水は、流入チャンバー２によって、ろ材
１０に広く分配され、ろ材１０内を横に流れ、集水スト
レーナ４を介して、流出チャンバー３に流出する。この
間に、原水はろ過される。流出チャンバー３に流出した
処理水は、処理水調節弁５を通じて、図示せぬ処理水槽
へ流出する。The raw water is widely distributed to the filter medium 10 by the inflow chamber 2, flows laterally in the filter medium 10, and flows out to the outflow chamber 3 via the water collecting strainer 4. During this time, the raw water is filtered. The treated water flowing out to the outflow chamber 3 flows out to a treated water tank (not shown) through the treated water control valve 5.
【００２９】ろ過槽１の下部のろ材１０は、エアリフト
ポンプ６およびエアリフト管７により、ろ材洗浄器２０
に搬送され、ろ材洗浄器２０から、ろ過槽１の下部に堆
積したろ材１０の上面に落下する。この間に、ろ材１０
に付着した濁質成分が、ろ材１０から剥離する。そし
て、剥離した濁質成分が混じった水が、オーバーフロー
によりオリフィス２４から洗浄排水管２３に流れ込み、
排水される。The filter medium 10 at the lower part of the filter tank 1 is filtered by an air lift pump 6 and an air lift pipe 7 into a filter medium washing device 20.
And falls from the filter medium washer 20 onto the upper surface of the filter medium 10 deposited at the lower part of the filtration tank 1. During this time, filter media 10
The turbid component adhered to the filter medium 10 is separated from the filter medium 10. Then, the water mixed with the separated turbid component flows from the orifice 24 into the cleaning drainage pipe 23 by overflow,
Drained.
【００３０】ろ材洗浄器２０から落下したろ材１０は、
その直下を頂点とする山形に堆積する。この山の斜面
を、落下したろ材１０が転がるが、粒径の大きいろ材１
０ほど遠くまで転がる。流入チャンバー２よりも流出チ
ャンバー３寄りにろ材洗浄器２０が設置されているた
め、流入チャンバー２の近くではろ材の粒径が大きく、
流出チャンバー３へ近づくほどろ材１０の粒径が小さく
なり、流出チャンバー３の極く近くでろ材１０の粒径が
やや大きくなるという、ろ過に好ましい分布が自然に形
成される。The filter medium 10 dropped from the filter medium washing device 20 is
It accumulates in a mountain shape with the vertex just below it. The falling filter medium 10 rolls on the slope of this mountain,
Roll as far as 0. Since the filter medium washing device 20 is installed closer to the outflow chamber 3 than the inflow chamber 2, the particle size of the filter medium is large near the inflow chamber 2,
As the filter medium 10 gets closer to the outflow chamber 3, the particle size of the filter medium 10 becomes smaller, and the particle size of the filter medium 10 becomes slightly larger in the immediate vicinity of the outflow chamber 3, whereby a favorable distribution for filtration is naturally formed.
【００３１】図２および図３は、横流型移動床式ろ過装
置１００の運転方法を示すフロー図である。ステップＰ
１では、処理水調節弁５を全閉にする。ステップＰ２で
は、流入チャンバー２に原水を供給する。FIGS. 2 and 3 are flowcharts showing the operation method of the horizontal flow type moving bed type filtration apparatus 100. Step P
In step 1, the treated water control valve 5 is fully closed. In Step P2, raw water is supplied to the inflow chamber 2.
【００３２】ステップＰ３では、ろ過槽１内の水位ＷＬ
が設定水位Ｈ１に到達するまで待ち、水位ＷＬが設定水
位Ｈ１に到達したらステップＰ４へ進む。ここで、Ｈ１
は、原水が低濁質濃度の場合に対応できるような水位で
ある。ちなみに、原水が中濁質濃度の場合に対応できる
ような設定水位をＨ２とし、原水が高濁質濃度の場合に
対応できるような設定水位をＨ３とする。Ｈ１＜Ｈ２＜
Ｈ３である。Ｈ３は、従来の設定水位Ｈと等しい。In step P3, the water level WL in the filtration tank 1
Waits until the water level reaches the set water level H1, and when the water level WL has reached the set water level H1, the process proceeds to step P4. Here, H1
Is a water level that can cope with the case where the raw water has a low turbidity concentration. Incidentally, the set water level that can handle the case where the raw water has a medium turbidity concentration is H2, and the set water level that can handle the case where the raw water has a high turbidity concentration is H3. H1 <H2 <
H3. H3 is equal to the conventional set water level H.
【００３３】ステップＰ４では、エアリフトポンプ６を
起動する。すなわち、空気調節弁８を全開にしてエアリ
フトポンプ６に圧縮空気を供給する。ステップＰ５で
は、空気調節弁８の開度をＯ１として、エアリフトポン
プ６に供給する圧縮空気を減らす。ここで、Ｏ１は、原
水が低濁質濃度の場合に対応できるような開度である。
ちなみに、原水が中濁質濃度の場合に対応できるような
開度をＯ２とし、原水が高濁質濃度の場合に対応できる
ような開度をＯ３とする。Ｏ１＜Ｏ２＜Ｏ３である。Ｏ
３は、全開に相当する。In Step P4, the air lift pump 6 is started. That is, the air control valve 8 is fully opened to supply the compressed air to the air lift pump 6. In Step P5, the opening degree of the air control valve 8 is set to O1, and the amount of compressed air supplied to the air lift pump 6 is reduced. Here, O1 is an opening degree that can cope with a case where the raw water has a low turbidity concentration.
By the way, the opening degree which can cope with the case where the raw water has a medium turbidity concentration is O2, and the opening degree which can cope with the case where the raw water has a high turbidity concentration is O3. O1 <O2 <O3. O
3 corresponds to full opening.
【００３４】ステップＰ６では、処理水調節弁５を現状
の開度よりも所定量だけ開く。これにより、処理水が排
出され始めるか又は処理水の排出量が増加する。In step P6, the treated water control valve 5 is opened by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water starts or the discharged amount of the treated water increases.
【００３５】ステップＰ７では、ろ過槽１内の水位ＷＬ
を計測し、設定水位Ｈ１より低くなっていたらステップ
Ｐ８へ進み、設定水位Ｈ１より高くなっていたらステッ
プＰ９へ進み、設定水位Ｈ１が維持されていたらステッ
プＰ１０へ進む。In Step P7, the water level WL in the filtration tank 1
When the water level is lower than the set water level H1, the process proceeds to step P8. When the water level is higher than the set water level H1, the process proceeds to step P9. When the water level is maintained, the process proceeds to step P10.
【００３６】ステップＰ８では、処理水調節弁５を現状
の開度よりも所定量だけ閉じる。これにより、処理水の
排出が止まるか又は処理水の排出量が減少する。そし
て、前記ステップＰ７に戻る。In Step P8, the treated water control valve 5 is closed by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water stops or the discharge amount of the treated water decreases. Then, the process returns to Step P7.
【００３７】ステップＰ９では、処理水調節弁５が限界
開度に達していなかったら前記ステップＰ６に戻り、限
界開度に達していたら図３のステップＰ２０へ進む。In step P9, if the treated water control valve 5 has not reached the limit opening, the process returns to step P6, and if it has reached the limit opening, the process proceeds to step P20 in FIG.
【００３８】ステップＰ１０では、ろ過処理を停止する
指示があるまでは前記ステップＰ７に戻り、ろ過処理を
停止する指示があったらステップＰ１１へ進む。In step P10, the process returns to step P7 until there is an instruction to stop the filtration process, and proceeds to step P11 when there is an instruction to stop the filtration process.
【００３９】ステップＰ１１では、原水の供給を停止す
る。ステップＰ１２では、エアリフトポンプ６を停止す
る。すなわち、空気調節弁８を全閉にしてエアリフトポ
ンプ６への圧縮空気の供給を止める。ステップＰ１３で
は、処理水調節弁５を全閉にする。In Step P11, supply of raw water is stopped. In Step P12, the air lift pump 6 is stopped. That is, the supply of compressed air to the air lift pump 6 is stopped by fully closing the air control valve 8. In Step P13, the treated water control valve 5 is fully closed.
【００４０】図３のステップＰ２０では、空気調節弁８
の開度をＯ２として、エアリフトポンプ６に供給する圧
縮空気を増やす。前述のように、Ｏ２は、原水が中濁質
濃度の場合に対応できるような開度である。In Step P20 of FIG. 3, the air control valve 8
Is set to O2, and the amount of compressed air supplied to the air lift pump 6 is increased. As described above, O2 is an opening degree that can cope with the case where the raw water has a turbid substance concentration.
【００４１】ステップＰ２１では、ろ過槽１内の水位Ｗ
Ｌを計測し、設定水位Ｈ２より低くなっていたらステッ
プＰ２２へ進み、設定水位Ｈ２より高くなっていたらス
テップＰ２３へ進み、設定水位Ｈ２が維持されていたら
前記ステップＰ１０に戻る。In Step P21, the water level W in the filtration tank 1
L is measured, and if it is lower than the set water level H2, the process proceeds to Step P22. If it is higher than the set water level H2, the process proceeds to Step P23. If the set water level H2 is maintained, the process returns to Step P10.
【００４２】ステップＰ２２では、処理水調節弁５を現
状の開度よりも所定量だけ閉じる。これにより、処理水
の排出が止まるか又は処理水の排出量が減少する。そし
て、前記ステップＰ２１に戻る。In Step P22, the treated water control valve 5 is closed by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water stops or the discharge amount of the treated water decreases. Then, the process returns to Step P21.
【００４３】ステップＰ２３では、処理水調節弁５が限
界開度に達していなかったらステップＰ２４へ進み、限
界開度に達していたらステップＰ２５へ進む。In step P23, if the treated water control valve 5 has not reached the limit opening, the process proceeds to step P24, and if it has reached the limit opening, the process proceeds to step P25.
【００４４】ステップＰ２４では、処理水調節弁５を現
状の開度よりも所定量だけ開く。これにより、処理水が
排出され始めるか又は処理水の排出量が増加する。そし
て、前記ステップＰ２１に戻る。In Step P24, the treated water control valve 5 is opened by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water starts or the discharged amount of the treated water increases. Then, the process returns to Step P21.
【００４５】ステップＰ２５では、空気調節弁８の開度
をＯ３として、エアリフトポンプ６に供給する圧縮空気
を増やす。前述のように、Ｏ３は、原水が高濁質濃度の
場合に対応できるような開度である。In Step P25, the opening degree of the air control valve 8 is set to O3, and the amount of compressed air supplied to the air lift pump 6 is increased. As described above, O3 is an opening degree that can cope with the case where the raw water has a high turbidity concentration.
【００４６】ステップＰ２６では、ろ過槽１内の水位Ｗ
Ｌを計測し、設定水位Ｈ３より低くなっていたらステッ
プＰ２７へ進み、設定水位Ｈ３より高くなっていたらス
テップＰ２８へ進み、設定水位Ｈ３が維持されていたら
前記ステップＰ１０に戻る。In step P26, the water level W in the filtration tank 1
L is measured, and if it is lower than the set water level H3, the process proceeds to step P27. If it is higher than the set water level H3, the process proceeds to step P28. If the set water level H3 is maintained, the process returns to step P10.
【００４７】ステップＰ２７では、処理水調節弁５を現
状の開度よりも所定量だけ閉じる。これにより、処理水
の排出が止まるか又は処理水の排出量が減少する。そし
て、前記ステップＰ２６に戻る。In Step P27, the treated water control valve 5 is closed by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water stops or the discharge amount of the treated water decreases. Then, the process returns to Step P26.
【００４８】ステップＰ２８では、処理水調節弁５が限
界開度に達していなかったらステップＰ２９へ進み、限
界開度に達していたら前記ステップＰ１１に戻る。In step P28, if the treated water control valve 5 has not reached the limit opening, the process proceeds to step P29, and if it has reached the limit opening, the process returns to step P11.
【００４９】ステップＰ２９では、処理水調節弁５を現
状の開度よりも所定量だけ開く。これにより、処理水が
排出され始めるか又は処理水の排出量が増加する。そし
て、前記ステップＰ２６に戻る。In Step P29, the treated water control valve 5 is opened by a predetermined amount from the current opening degree. Thereby, the discharge of the treated water starts or the discharged amount of the treated water increases. Then, the process returns to Step P26.
【００５０】図４は、ろ過槽１のろ過抵抗ΔＰｓの変化
を示す例示図である。原水の濁質濃度が高くなると、ろ
材１０間が詰まるために、ろ過抵抗ΔＰｓは高くなる。FIG. 4 is an illustrative view showing a change in the filtration resistance ΔPs of the filtration tank 1. When the turbid concentration of the raw water increases, the space between the filter media 10 becomes clogged, so that the filtration resistance ΔPs increases.
【００５１】図５は、処理水調節弁５の開度の変化を示
す例示図である。ろ過抵抗ΔＰｓが高くなると、処理水
調節弁５の開度が一旦大きくなるが、空気調節弁８の開
度を大きくするので、処理水調節弁５の開度が元に戻っ
ている。FIG. 5 is an illustrative view showing a change in the opening degree of the treated water control valve 5. When the filtration resistance ΔPs increases, the opening degree of the treated water control valve 5 temporarily increases, but since the opening degree of the air control valve 8 increases, the opening degree of the treated water control valve 5 returns to the original degree.
【００５２】図６は、ろ過槽１内の水位ＷＬの変化を示
す例示図である。水位ＷＬは、原水が低濁質濃度の場合
は設定水位Ｈ１に維持される。原水が中濁質濃度の場合
は設定水位Ｈ２に維持される。原水が高濁質濃度の場合
は設定水位Ｈ３に維持される。これは、ろ過抵抗ΔＰｓ
の変化に応じて処理水調節弁５および空気調節弁８の開
度を調節するためである。FIG. 6 is an illustrative view showing a change in the water level WL in the filtration tank 1. The water level WL is maintained at the set water level H1 when the raw water has a low turbidity concentration. When the raw water has a turbid substance concentration, it is maintained at the set water level H2. If the raw water has a high turbidity concentration, it is maintained at the set water level H3. This is the filtration resistance ΔPs
This is for adjusting the degree of opening of the treated water control valve 5 and the air control valve 8 in accordance with the change of.
【００５３】図７は、空気調節弁８の開度の変化を示す
例示図である。ろ過抵抗ΔＰｓが高くなると、空気調節
弁８の開度が大きくなる。FIG. 7 is an illustrative view showing a change in the opening degree of the air control valve 8. When the filtration resistance ΔPs increases, the opening of the air control valve 8 increases.
【００５４】図８は、水位ＷＬとオリフィス２４の高さ
ＥＬの水位差ｈの変化を本発明と従来とで比較した例示
図である。実線で示すように、本発明の運転方法では、
原水の濁質濃度が低／中の時は水位差ｈも小さくなる。
このため、水位ＷＬとオリフィス２４の高さＥＬの水位
差ｈで決まる洗浄排水量が少なくなる。つまり、原水回
収効率が向上する。一方、破線で示すように、従来の運
転方法では、原水の高濁質濃度に合わせて水位差ｈが大
きい。このため、原水の濁質濃度が低／中の時は洗浄排
水が不必要に多量になり、原水回収効率が悪くなる。FIG. 8 is an illustrative view comparing the change in the water level difference h between the water level WL and the height EL of the orifice 24 between the present invention and the prior art. As shown by the solid line, in the driving method of the present invention,
When the turbid concentration of the raw water is low / medium, the water level difference h is also small.
For this reason, the amount of cleaning drainage determined by the water level difference h between the water level WL and the height EL of the orifice 24 decreases. That is, the raw water recovery efficiency is improved. On the other hand, as indicated by the broken line, in the conventional operation method, the water level difference h is large according to the high turbidity concentration of the raw water. Therefore, when the turbid concentration of the raw water is low / medium, the amount of washing wastewater becomes unnecessarily large, and the raw water recovery efficiency deteriorates.
【００５５】図９は、空気供給量の変化を本発明と従来
とで比較した例示図である。実線で示すように、本発明
の運転方法では、原水の濁質濃度が低／中の時は空気供
給量も少なくなる。このため、圧縮空気の消費量を低減
できる。一方、破線で示すように、従来の運転方法で
は、原水の高濁質濃度に合わせて空気供給量が多い。こ
のため、原水の濁質濃度が低／中の時は圧縮空気を不必
要に多量に消費してしまう。FIG. 9 is an exemplary diagram comparing the change in the air supply amount between the present invention and the conventional one. As shown by the solid line, in the operation method of the present invention, when the turbid concentration of the raw water is low / medium, the air supply amount is also small. For this reason, the consumption of compressed air can be reduced. On the other hand, as indicated by the broken line, in the conventional operation method, the air supply amount is large in accordance with the high turbidity concentration of the raw water. Therefore, when the turbid concentration of the raw water is low / medium, the compressed air is unnecessarily consumed in a large amount.
【００５６】他の実施形態としては、設定水位を２段階
（例えばＨ１とＨ３、または、Ｈ２とＨ３）にしたも
の、または、設定水位を４段階以上にしたものが挙げら
れる。In another embodiment, the set water level is set in two stages (for example, H1 and H3, or H2 and H3), or the set water level is set in four or more stages.
【００５７】[0057]
【発明の効果】本発明の横流型移動床式ろ過装置によれ
ば、不必要な洗浄排水を抑制でき、原水回収効率を向上
できる。また、圧縮空気の消費を抑制できる。これらに
より、ランニングコストを低減できる。According to the crossflow type moving bed type filtration apparatus of the present invention, unnecessary washing and drainage can be suppressed, and the efficiency of raw water recovery can be improved. Further, consumption of compressed air can be suppressed. As a result, running costs can be reduced.
【図１】本発明の一実施形態に係る横流型移動床式ろ過
装置の構成図である。FIG. 1 is a configuration diagram of a horizontal flow type moving bed type filtration device according to an embodiment of the present invention.
【図２】図１の横流型移動床式ろ過装置の運転動作を示
すフロー図である。FIG. 2 is a flowchart showing the operation of the horizontal flow type moving bed type filtration device of FIG.
【図３】図２の続きのフロー図である。FIG. 3 is a flowchart continued from FIG. 2;
【図４】本発明におけるろ過抵抗の変化を示す例示図で
ある。FIG. 4 is an exemplary diagram showing a change in filtration resistance in the present invention.
【図５】本発明における処理水調節弁の開度の変化を示
す例示図である。FIG. 5 is an exemplary view showing a change in the opening degree of the treated water control valve in the present invention.
【図６】本発明におけるろ過槽内の水位の変化を示す例
示図である。FIG. 6 is an exemplary diagram showing a change in water level in a filtration tank in the present invention.
【図７】本発明における空気調節弁の開度の変化を示す
例示図である。FIG. 7 is an exemplary view showing a change in the opening degree of the air control valve according to the present invention.
【図８】水位差の変化を本発明と従来とで比較した例示
図である。FIG. 8 is an exemplary diagram comparing a change in water level difference between the present invention and a conventional example.
【図９】空気供給量の変化を本発明と従来とで比較した
例示図である。FIG. 9 is an exemplary diagram comparing a change in the amount of supplied air between the present invention and the related art.
【図１０】従来の横流型移動床式ろ過装置の一例を示す
構成図である。FIG. 10 is a configuration diagram showing an example of a conventional cross-flow type moving bed type filtration device.
【図１１】図１０の横流型移動床式ろ過装置の運転動作
を示すフロー図である。11 is a flowchart showing the operation of the horizontal moving bed type filtration apparatus of FIG. 10;
【図１２】従来のろ過抵抗の変化を示す例示図である。FIG. 12 is an exemplary diagram showing a change in filtration resistance in the related art.
【図１３】従来の処理水調節弁の開度の変化を示す例示
図である。FIG. 13 is an exemplary view showing a change in the opening degree of a conventional treated water control valve.
【図１４】従来のろ過槽内の水位の変化を示す例示図で
ある。FIG. 14 is an exemplary view showing a change in water level in a conventional filtration tank.
【図１５】従来の空気調節弁の開度の変化を示す例示図
である。FIG. 15 is an exemplary view showing a change in the opening degree of a conventional air control valve.
【符号の説明】 １ ろ過槽 ２ 流入チャンバー ３ 流出チャンバー ５ 処理水調節弁 ６ エアリフトポンプ ７ エアリフト管 ８ 空気調節弁 ２０ ろ材洗浄器 ２４ オリフィス ３０ 水位計 ４０ 制御装置 １００ 横流型移動床式ろ過装置[Description of Signs] 1 Filtration tank 2 Inflow chamber 3 Outflow chamber 5 Treated water control valve 6 Air lift pump 7 Air lift pipe 8 Air control valve 20 Filter medium washer 24 Orifice 30 Water level gauge 40 Control device 100 Cross-flow type moving floor type filtration device
───────────────────────────────────────────────────── フロントページの続き (72)発明者 山本 大輔 東京都世田谷区桜丘五丁目48番19号 水道 機工株式会社内 (72)発明者 笠倉 和昌 東京都世田谷区桜丘五丁目48番19号 水道 機工株式会社内 Ｆターム(参考） 4D041 BA12 BB14 BC01 BC48 BD17 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Daisuke Yamamoto 5-48-19 Sakuragaoka, Setagaya-ku, Tokyo Waterworks Inside Kiko Co., Ltd. (72) Kazumasa Kasakura 5-48-19, Sakuragaoka, Setagaya-ku, Tokyo Waterworks F term in Kiko Co., Ltd. (reference) 4D041 BA12 BB14 BC01 BC48 BD17
Claims (2)
ろ材（１０）が下部に堆積したろ過槽（１）と、ろ過槽
（１）の下部側壁に設置され原水をろ過槽（１）に供給
するための流入チャンバー（２）と、流入チャンバー
（２）の反対側のろ過槽（１）の下部側壁に設置され処
理水を排出するための流出チャンバー（３）と、流出チ
ャンバー（３）から排出する処理水量を調節するための
処理水調節弁（５）と、ろ過槽（１）の底部付近のろ材
（１０）を圧縮空気により水と共にろ材洗浄器（２０）
に搬送するエアリフトポンプ（６）およびエアリフト管
（７）と、エアリフトポンプ（６）に供給する圧縮空気
量を調節するための空気調節弁（８）と、ろ過槽（１）
の上部に設置され且つ搬送されてきた圧縮空気と水とろ
材（１０）から圧縮空気とろ材（１０）から離脱した濁
質成分を含む水とろ材（１０）とを分離して、圧縮空気
は排気し、ろ材（１０）から離脱した濁質成分を含む水
は排水し、ろ材（１０）は落下させるろ材洗浄器（２
０）と、ろ過槽（１）内の水位（ＷＬ）を計測する水位
計（３０）と、運転を制御する制御装置（４０）とを具
備して構成され、 前記制御装置（４０）は、高濁質濃度に対応した設定水
位（Ｈ３）とそれより低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）とを設定され、また、高濁質濃度に対応
した空気調節弁（８）の開度（Ｏ３）とそれより低い濁
質濃度に対応した空気調節弁（８）の開度（Ｏ１，Ｏ
２）とを設定され、まず、高濁質濃度より低い濁質濃度
に対応した空気調節弁（８）の開度（Ｏ１，Ｏ２）とし
た状態で水位計（３０）で計測した水位（ＷＬ）が高濁
質濃度より低い濁質濃度に対応した設定水位（Ｈ１，Ｈ
２）に一致するように処理水調節弁（５）の開度を制御
し、処理水調節弁（５）の開度を全開にしても水位計
（３０）で計測した水位（ＷＬ）が高濁質濃度より低い
濁質濃度に対応した設定水位（Ｈ１，Ｈ２）より高くな
る場合は、高濁質濃度に対応した空気調節弁（８）の開
度（Ｏ３）とした状態で水位計（３０）で計測した水位
（ＷＬ）が高濁質濃度に対応した設定水位（Ｈ３）に一
致するように処理水調節弁（５）の開度を制御すること
を特徴とする横流型移動床式ろ過装置。1. A filter tank (1) in which a filter medium (10) for adhering and capturing a turbid component in raw water is deposited at a lower portion, and a raw water is provided on a lower side wall of the filter tank (1) to filter the raw water. ), An outflow chamber (3) installed on the lower side wall of the filtration tank (1) opposite to the inflow chamber (2) for discharging the treated water, and an outflow chamber (2). 3) a treated water control valve (5) for regulating the amount of treated water discharged from the filter medium (5), and a filter medium (10) near the bottom of the filtration tank (1) together with water with compressed air through a filter medium washer (20).
Lift pump (6) and air lift pipe (7) for transporting to the air, an air control valve (8) for adjusting the amount of compressed air supplied to the air lift pump (6), and a filtration tank (1)
The compressed air and the water and filter medium (10) containing the turbid component separated from the filter medium (10) are separated from the compressed air and the water and filter medium (10) installed and transported at the upper part of The exhausted water containing the turbid components separated from the filter medium (10) is drained, and the filter medium (10) is dropped into a filter medium washing device (2).
0), a water level gauge (30) for measuring a water level (WL) in the filtration tank (1), and a control device (40) for controlling operation. The control device (40) A set water level (H3) corresponding to the high turbidity concentration and a set water level (H1, H2) corresponding to the lower turbidity concentration are set, and the air control valve (8) corresponding to the high turbidity concentration is set. The opening degree of the air control valve (8) corresponding to the opening degree (O3) and the turbid concentration lower than that (O1, O
2). First, the water level (WL) measured by the water level meter (30) with the air control valve (8) opening (O1, O2) corresponding to the turbid concentration lower than the high turbid concentration. ) Is the set water level (H1, H) corresponding to the turbidity concentration lower than the high turbidity concentration.
The opening of the treated water control valve (5) is controlled so as to match 2), and the water level (WL) measured by the water level gauge (30) is high even when the opening of the treated water control valve (5) is fully opened. When the water level is higher than the set water level (H1, H2) corresponding to the turbid concentration lower than the turbid concentration, the water level meter ( 30. The horizontal flow type moving bed type wherein the opening of the treated water control valve (5) is controlled so that the water level (WL) measured in 30) matches the set water level (H3) corresponding to the high turbidity concentration. Filtration equipment.
ろ材（１０）が下部に堆積したろ過槽（１）と、ろ過槽
（１）の下部側壁に設置され原水をろ過槽（１）に供給
するための流入チャンバー（２）と、流入チャンバー
（２）の反対側のろ過槽（１）の下部側壁に設置され処
理水を排出するための流出チャンバー（３）と、流出チ
ャンバー（３）から排出する処理水量を調節するための
処理水調節弁（５）と、ろ過槽（１）の底部付近のろ材
（１０）を圧縮空気により水と共にろ材洗浄器（２０）
に搬送するエアリフトポンプ（６）およびエアリフト管
（７）と、エアリフトポンプ（６）に供給する圧縮空気
量を調節するための空気調節弁（８）と、ろ過槽（１）
の上部に設置され且つ搬送されてきた圧縮空気と水とろ
材（１０）から圧縮空気とろ材（１０）から離脱した濁
質成分を含む水とろ材（１０）とを分離して、圧縮空気
は排気し、ろ材（１０）から離脱した濁質成分を含む水
は排水し、ろ材（１０）は落下させるろ材洗浄器（２
０）と、ろ過槽（１）内の水位（ＷＬ）を計測する水位
計（３０）と、運転を制御する制御装置（４０）とを具
備して構成され、 前記制御装置（４０）は、高濁質濃度に対応した設定水
位（Ｈ３）とそれより低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）とを設定され、まず、水位計（３０）で
計測した水位（ＷＬ）が高濁質濃度より低い濁質濃度に
対応した設定水位（Ｈ１，Ｈ２）に一致するように処理
水調節弁（５）の開度を制御し、処理水調節弁（５）の
開度を全開にしても水位計（３０）で計測した水位（Ｗ
Ｌ）が高濁質濃度より低い濁質濃度に対応した設定水位
（Ｈ１，Ｈ２）より高くなる場合は、水位計（３０）で
計測した水位（ＷＬ）が高濁質濃度に対応した設定水位
（Ｈ３）に一致するように処理水調節弁（５）の開度を
制御することを特徴とする横流型移動床式ろ過装置。2. A filter tank (1) in which a filter medium (10) for adhering and capturing a turbid component in raw water is deposited at a lower portion, and a raw water is provided on a lower side wall of the filter tank (1) to filter the raw water. ), An outflow chamber (3) installed on the lower side wall of the filtration tank (1) opposite to the inflow chamber (2) for discharging the treated water, and an outflow chamber (2). 3) a treated water control valve (5) for regulating the amount of treated water discharged from the filter medium (5), and a filter medium (10) near the bottom of the filtration tank (1) together with water with compressed air through a filter medium washer (20).
Lift pump (6) and air lift pipe (7) for transporting to the air, an air control valve (8) for adjusting the amount of compressed air supplied to the air lift pump (6), and a filtration tank (1)
The compressed air and the water and filter medium (10) containing the turbid component separated from the filter medium (10) are separated from the compressed air and the water and filter medium (10) installed and transported at the upper part of The exhausted water containing the turbid components separated from the filter medium (10) is drained, and the filter medium (10) is dropped into a filter medium washing device (2).
0), a water level gauge (30) for measuring a water level (WL) in the filtration tank (1), and a control device (40) for controlling operation. The control device (40) The set water level (H3) corresponding to the high turbidity concentration and the set water levels (H1, H2) corresponding to the lower turbidity concentration are set. First, the water level (WL) measured by the water level meter (30) is high. The opening degree of the treated water control valve (5) is controlled so as to match the set water level (H1, H2) corresponding to the suspended matter concentration lower than the suspended matter concentration, and the opening degree of the treated water control valve (5) is fully opened. Water level (W) measured by the water level meter (30)
When L) is higher than the set water level (H1, H2) corresponding to the turbidity concentration lower than the high turbidity concentration, the water level (WL) measured by the water level meter (30) is the set water level corresponding to the high turbidity concentration. A horizontal flow type moving bed type filtration device characterized in that the opening degree of the treated water control valve (5) is controlled so as to coincide with (H3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001140817A JP4454179B2 (en) | 2001-05-11 | 2001-05-11 | Cross-flow type moving bed filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001140817A JP4454179B2 (en) | 2001-05-11 | 2001-05-11 | Cross-flow type moving bed filter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2002331205A true JP2002331205A (en) | 2002-11-19 |
| JP4454179B2 JP4454179B2 (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001140817A Expired - Fee Related JP4454179B2 (en) | 2001-05-11 | 2001-05-11 | Cross-flow type moving bed filter |
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| Country | Link |
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| JP (1) | JP4454179B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010149077A (en) * | 2008-12-26 | 2010-07-08 | Suido Kiko Kaisha Ltd | Method of activating moving bed type filtration apparatus |
| JP2012166113A (en) * | 2011-02-10 | 2012-09-06 | Takuma Co Ltd | Sand filter |
| JP2013516317A (en) * | 2010-01-08 | 2013-05-13 | パークソン コーポレーション | Method and computer program product for treating an impurity-containing liquid |
| JP2014069130A (en) * | 2012-09-28 | 2014-04-21 | Kubota Corp | Moving-bed type filter tank, and clarification tank |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113023959B (en) * | 2021-04-20 | 2023-05-23 | 西安市天佑净化设备有限责任公司 | Progressive selective wastewater recycling and purifying equipment |
-
2001
- 2001-05-11 JP JP2001140817A patent/JP4454179B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010149077A (en) * | 2008-12-26 | 2010-07-08 | Suido Kiko Kaisha Ltd | Method of activating moving bed type filtration apparatus |
| JP2013516317A (en) * | 2010-01-08 | 2013-05-13 | パークソン コーポレーション | Method and computer program product for treating an impurity-containing liquid |
| JP2013516316A (en) * | 2010-01-08 | 2013-05-13 | パークソン コーポレーション | Apparatus for treating liquids containing impurities |
| JP2012166113A (en) * | 2011-02-10 | 2012-09-06 | Takuma Co Ltd | Sand filter |
| JP2014069130A (en) * | 2012-09-28 | 2014-04-21 | Kubota Corp | Moving-bed type filter tank, and clarification tank |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4454179B2 (en) | 2010-04-21 |
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