JPH0857211A - Regeneration of filter medium in filter - Google Patents
Regeneration of filter medium in filterInfo
- Publication number
- JPH0857211A JPH0857211A JP6218212A JP21821294A JPH0857211A JP H0857211 A JPH0857211 A JP H0857211A JP 6218212 A JP6218212 A JP 6218212A JP 21821294 A JP21821294 A JP 21821294A JP H0857211 A JPH0857211 A JP H0857211A
- Authority
- JP
- Japan
- Prior art keywords
- filter medium
- water
- filtration
- pipe
- raw water
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Landscapes
- Filtration Of Liquid (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は上下水，用水，産業廃水
等の水に含まれる懸濁物質を補捉除去する濾過方法に関
するもので、更に詳しくは濾過に使用される濾材の再生
を自動的に実施することの出来る方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration method for trapping and removing suspended solids contained in water such as sewage, sewage, industrial wastewater, and the like. Method that can be implemented in a specific manner.
【０００２】[0002]
【従来の技術】濾過とは、不溶性の懸濁粒子を含む流体
一固体系の水溶液を何らかの力を利用して多孔質の隔
壁、即ち濾材に通し、両者を分離する操作であり、濾過
の方法としては、濾過の際使用される力により、重力濾
過，眞空濾過等に分類される。上記いずれの方法を採用
するとしても、濾過砂等を充填した濾材の機能が濾過時
間の経過に伴って低下することから、濾材の目詰りが限
界を越えるとこれの再生を行なう必要がある。2. Description of the Related Art Filtration is an operation in which an aqueous solution of a fluid-solid system containing insoluble suspended particles is passed through a porous partition wall, that is, a filter medium with some force to separate the two. Are classified into gravity filtration, vacuum filtration, etc. depending on the force used during filtration. Regardless of which of the above methods is adopted, the function of the filter medium filled with the filter sand or the like deteriorates with the lapse of the filtration time. Therefore, if the clogging of the filter medium exceeds the limit, it must be regenerated.
【０００３】前記の再生方法としては、特公平５−２５
５２４号公報に開示されているような「濾過機における
濾材の再生装置」が知られているが、最も広く利用され
ているのは、濾材が目詰りした場合、一旦濾過作業を中
断し、通常の原水流下方向に対して逆方向の逆洗水を通
水し、目詰りを起こしている懸濁粒子を流し落す方法で
ある。As the above-mentioned reproducing method, Japanese Patent Publication No. 5-25
A "regeneration device for a filter medium in a filter" as disclosed in Japanese Patent No. 524 is known, but the most widely used one is to interrupt the filtration operation once when the filter medium is clogged, This is a method of passing backwash water in the direction opposite to the downward direction of the raw water to flush out suspended particles causing clogging.
【０００４】前記再生を行なう時期としては、計時装
置等（タイマー，ステッピングプログラマー等）を利用
して周期的あるいはシーケンシャル的に逆洗水の吐出を
実施する。、濾過操作中、濾過槽出入口の管内水圧を
常時監視し、目詰りを生じてその圧力差が所定値より増
大している場合、都度人為的に再生を実施する。以上の
２方法のいずれかが採用されている。As the time for performing the regeneration, backwashing water is discharged periodically or sequentially by using a timing device or the like (timer, stepping programmer, etc.). During the filtration operation, the water pressure in the pipe at the inlet and outlet of the filtration tank is constantly monitored, and if clogging occurs and the pressure difference exceeds a predetermined value, regeneration is artificially performed each time. Either of the above two methods is adopted.
【０００５】[0005]
【発明が解決しようとする課題】ところが前記の方法
は、濾過過程における原水の通水時期や再生時の逆洗水
吐出時期等を含む全過程の時間が予め設定されているの
で、原水水質の変動により濾材の目詰りや出入口水圧差
の増大を招くことがあり、その結果、時に機器の破損，
濾材の早期消耗，処理水量の異常な低下を引き起こすこ
とが問題である。又の方法は人為的に再生開始時期を
決めるので、出入口の管内圧力の監視を継続的に行なう
必要があり、時に監視もれや、人為的操作に起因して再
生開始タイミングのバラツキが生ずることが問題であ
る。本発明は従来の濾材再生方法における上記問題点の
解消を目的とするもので、濾過槽の原水出入口の管内に
夫々水圧計を設け、両水圧計を夫々電気回路を介して制
御装置に連結し、該制御装置の指示により、濾過用原水
の通水、逆洗水の吐出を都度濾材の目詰りに応じて自動
制御し、もって濾材再生の自動化を実施しようとするも
のである。However, in the above-mentioned method, since the time of the whole process including the water supply timing of the raw water in the filtration process and the backwash water discharge time at the time of regeneration is set in advance, Fluctuations may cause clogging of the filter media and increase in the water pressure difference between the inlet and outlet, resulting in occasional equipment damage or
It is a problem that the filter material is consumed early and the amount of treated water decreases abnormally. The other method artificially determines the regeneration start time, so it is necessary to continuously monitor the pressure inside the inlet and outlet pipes, and sometimes the monitoring start is missed and the regeneration start timing varies due to human operation. Is a problem. The present invention is intended to solve the above problems in the conventional method for reclaiming a filter medium, and a water pressure gauge is provided in each pipe of the raw water inlet and outlet of the filtration tank, and both water pressure gauges are connected to a control device via an electric circuit. In accordance with an instruction from the control device, the raw water for filtration and the discharge of backwash water are automatically controlled according to the clogging of the filter medium, so that the regeneration of the filter medium is automated.
【０００６】[0006]
【課題を解決するための手段】上記課題を達成するため
に本発明は次の構成を備えている。即ち密封された濾過
槽の上部に原水を供給し、これを濾過槽下部の濾材に通
して連続式重力濾過を行なう濾過装置において、原水を
供給する原水管と濾過後の処理水を排出する排水管の水
圧を夫々常時検知し、これを電気回路を介して制御装置
に報知し、その圧力差が規定値を越えた際、前記制御装
置の指示により、濾過上部への原水供給を中継すると共
に、濾材下部から上方へ向う濾材貫通用の逆洗水を吐出
させ、これを濾過槽上部の環流口から環流管を介して槽
外へ排出せしめることを特徴とする濾過装置における濾
材の再生方法である。To achieve the above object, the present invention has the following constitution. That is, in a filtration device that supplies raw water to the upper part of a sealed filtration tank and passes this through a filter material at the bottom of the filtration tank to perform continuous gravity filtration, a raw water pipe that supplies the raw water and drainage that discharges the treated water after filtration. Each time the water pressure of the pipe is constantly detected, this is notified to the control device via an electric circuit, and when the pressure difference exceeds a specified value, the raw water supply to the upper part of the filtration is relayed as directed by the control device. A method for regenerating a filter medium in a filtration device, characterized in that backwash water for penetrating the filter medium is discharged upward from a lower part of the filter medium, and is discharged from the recirculation port of the upper part of the filtration tank through a circulation pipe to the outside of the tank. is there.
【０００７】[0007]
【作用】本発明方法においては、電気回路を介して制御
装置に連結する原水管の水圧センサーと、同様な濾過後
の処理水を排出する排水管の水圧センサーの両者によ
り、両者の圧力差の検知、即ち濾材の目詰り工合を感知
しているので、これの検知を自動的に且つ瞬時に見極め
ることが出来、人為的な圧力監視、即ち目詰り状態の判
断が不要となる。又濾材の目詰り工合を検知した際、制
御装置が直ちに濾材上部への原水供給を中断する一方、
濾材を下から上へ貫通する逆洗水を吐出させるので、時
期を失することなく、自動的に濾材の再生が可能とな
る。In the method of the present invention, the pressure difference between the raw water pipe connected to the control device via the electric circuit and the drain pipe water pressure sensor for discharging the treated water after the filtration is similarly measured. Since the detection, that is, the clogging process of the filter medium is detected, the detection can be automatically and instantaneously determined, and the artificial pressure monitoring, that is, the determination of the clogging state is unnecessary. When the clogging of the filter medium is detected, the controller immediately interrupts the raw water supply to the upper part of the filter medium,
Since the backwash water that penetrates the filter medium from bottom to top is discharged, the filter medium can be automatically regenerated without losing the time.
【０００８】[0008]
【実施例】以下図面に示す実施例により本発明方法を具
体的に説明する。先ず最初に本発明方法を実施する装置
の概要を原水及び処理水の流れと共に説明する。図は装
置の全体を示す説明図であり、並列する２台の濾過槽を
中心としてこれに接続する給水管系路，排水管系路及び
電気回路を示しており、図上右に位置するのは第４濾過
槽（１）、左に位置するのは第３濾過槽（２）である。
本実施例においては、並列する４台の濾過槽を接続せし
めた運転系統であるが、第１濾過槽及び第２濾過槽並び
にそれに接続する管系路と電気回路は第３濾過槽（２）
と略々同一の構成であるので、それらの槽の図示を省略
しており、又第３濾過槽（２）と第４濾過槽（１）の濾
過操作は略々同一の操作であるので、以下の実施例にお
いては第４濾過槽（１）を主体にして説明する。尚以下
第４濾過槽（１）を単に濾過槽（１）と呼称する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The method of the present invention will be specifically described below with reference to the embodiments shown in the drawings. First of all, an outline of an apparatus for carrying out the method of the present invention will be described together with flows of raw water and treated water. The figure is an explanatory view showing the whole of the device, showing the water supply pipe line, the drainage pipe line and the electric circuit connected to the two filtering tanks in parallel, which are located on the right side of the drawing. Is the fourth filtration tank (1), and the one located on the left is the third filtration tank (2).
In the present embodiment, the operating system is one in which four parallel filtration tanks are connected, but the first filtration tank and the second filtration tank, and the pipe system and electric circuit connected thereto are the third filtration tank (2).
Since the configurations are substantially the same as those of the above, those tanks are not shown, and the filtering operations of the third filtering tank (2) and the fourth filtering tank (1) are substantially the same operation. In the following examples, the fourth filtration tank (1) will be mainly described. Hereinafter, the fourth filtration tank (1) will be simply referred to as the filtration tank (1).
【０００９】濾過槽（１）は密封状に形成した槽内の下
半部に濾材（３）を設けてなるもので、槽内上部に供給
された原水（４）は濾材（３）を通った後、処理水
（５）として利用される。前記濾過槽（１）に原水
（４）を供給する流路は、原水（４）を貯水する原水槽
（６）からインバーターポンプ（７），原水管（８），
開状態のＡ電磁弁（９）を経由し、閉状態のＢ電磁弁
（１０）を通らず、濾過槽（１）上部のノズル（１１）
に達する。一方濾過された処理水（５）を排出する流路
は、濾過槽（１）の下部に接続する排水管（１２）、こ
れに接続する処理水管（１３），該管（１３）上に設け
たＣ電磁弁（１４）よりなっており、濾過後の処理水
（５）を前記流路を経由して外部に排出する用をなして
いる。The filtration tank (1) is provided with a filter medium (3) in the lower half of the tank formed in a hermetically sealed manner. Raw water (4) supplied to the upper part of the tank passes through the filter medium (3). After that, it is used as treated water (5). The flow path for supplying the raw water (4) to the filtration tank (1) includes a raw water tank (6) for storing the raw water (4), an inverter pump (7), a raw water pipe (8),
Nozzle (11) above filter tank (1) through A solenoid valve (9) in open state and not through B solenoid valve (10) in closed state
Reach On the other hand, the flow path for discharging the filtered treated water (5) is provided on the drain pipe (12) connected to the lower part of the filtration tank (1), the treated water pipe (13) connected to this, and the pipe (13). C solenoid valve (14) for discharging treated water (5) after filtration to the outside through the flow path.
【００１０】濾過槽（１）近傍の原水管（８）には、該
管内の水圧を常時検知するＡ圧力計（１５）が、又排水
管（１２）の近傍には該管内の水圧を常時検知するＢ圧
力計（１７）が設置されており、両圧力計（１５）（１
７）が検知した水圧は夫々の導圧管（１８）（１９）を
介して圧力伝送器（２０）に伝達され、次いで点線で示
す電気回路（２１）を介して、前記インバーターポンプ
（７）と全電磁弁を操作する制御装置（２２）に伝達さ
れる。In the raw water pipe (8) near the filtration tank (1), there is an A pressure gauge (15) for constantly detecting the water pressure in the pipe, and in the vicinity of the drain pipe (12) the water pressure in the pipe is constantly kept. A B pressure gauge (17) for detecting is installed, and both pressure gauges (15) (1
The water pressure detected by 7) is transmitted to the pressure transmitter (20) via the respective pressure guiding pipes (18) and (19), and then to the inverter pump (7) via the electric circuit (21) indicated by the dotted line. It is transmitted to the control device (22) that operates all solenoid valves.
【００１１】次いで濾材（３）の再生を実施する逆洗水
の流路について説明する。濾材再生を実施する際は、原
水の供給と濾過後の処理水の排出を一時中断させる。し
かる後、原水槽（６）から逆洗水用ポンプ（２３）を介
して逆洗水を吸引し、これを逆洗水管（２４），開状態
のＤ電磁弁（２５）に経由させ、閉状態のＥ電磁弁（２
６）に通さず、前記の排水管（１２）へ供給する。次い
で加圧状態の逆洗水は原水の流れとは逆方向に下から上
に向って濾材（３）を貫通し、濾過槽（１）上部の環流
口（２７）を経て槽外に排出される。Next, the flow path of the backwash water for regenerating the filter medium (3) will be described. When the filter medium is regenerated, the supply of raw water and the discharge of treated water after filtration are suspended. Then, the backwash water is sucked from the raw water tank (6) through the backwash water pump (23), and the backwash water is passed through the backwash water pipe (24) and the open D solenoid valve (25), and then closed. State E solenoid valve (2
It is not passed through 6) but is supplied to the drain pipe (12). Next, the backwash water under pressure passes through the filter medium (3) from the bottom to the top in the direction opposite to the flow of the raw water, and is discharged to the outside of the tank through the recirculation port (27) in the upper part of the filter tank (1). It
【００１２】前記環流口（２７）より吐出する逆洗水は
開状態のＧ電磁弁（３０）及び還流管（２９）を経由し
て直接原水槽（６）に還流する。逆洗終了後はＧ電磁弁
（３０）を閉止し、開状態のＦ電磁弁（２８）を経由
し、濾過槽（１）上部に残留した空気抜きを行なう。The backwash water discharged from the recirculation port (27) is directly returned to the raw water tank (6) via the G electromagnetic valve (30) and the return pipe (29) in the open state. After the backwashing is completed, the G electromagnetic valve (30) is closed, and the air remaining in the upper part of the filtration tank (1) is removed via the F electromagnetic valve (28) in the open state.
【００１３】濾過槽（１）には上述の水系供給機構と共
に空気供給機構が付設されている。即ち空気供給源に連
なる空気導管（３１）が濾過槽（１）近傍に配置されて
おり、その端部の一つは濾材（３）の上部に開口し、他
の端部は前記排水管（１２）に接続している。しかして
Ｈ電磁弁（３２），Ｉ電磁弁（３３）を開口することに
より濾材（３）の上下部に空気流を吐出せしめる。尚図
示の表示においてＦＩの総べては所定位置に設けた流量
計を示すものである。The filtration tank (1) is provided with an air supply mechanism in addition to the above water system supply mechanism. That is, an air conduit (31) connected to an air supply source is arranged in the vicinity of the filter tank (1), one end of which is opened above the filter medium (3), and the other end is the drain pipe (1). 12). Then, by opening the H solenoid valve (32) and the I solenoid valve (33), the air flow is discharged to the upper and lower portions of the filter medium (3). In the display shown in the figure, all of the FIs indicate the flowmeters provided at predetermined positions.
【００１４】本発明方法を実施する濾過装置の概要は上
述の如き構成からなるものであって、次にその濾過過程
及び濾材再生過程について説明する。通常の濾過操作に
先立って制御装置（２２）の指示により、Ｂ電磁弁（１
０），Ｆ電磁弁（２８），Ｇ電磁弁（３０）を閉にする
と共に、空気導管（３１）を主構成要素とする空気供給
機構と逆洗水用ポンプ（２３）を全面停止させる。The outline of the filtration apparatus for carrying out the method of the present invention is constructed as described above. Next, the filtration process and the filter material regeneration process will be described. Prior to the normal filtration operation, the B solenoid valve (1
0), the F solenoid valve (28), and the G solenoid valve (30) are closed, and the air supply mechanism mainly composed of the air conduit (31) and the backwash water pump (23) are completely stopped.
【００１５】しかる後インバーターポンプ（７）を駆動
し、原水（４）を原水管（８），Ａ電磁弁（９），ノズ
ル（１１）に経由させ、濾過槽（１）内で連続式重力濾
過を実施する。次いで濾材（３）を貫通して濾過された
処理水（５）は排水管（１２），Ｃ電磁弁（１４），処
理水管（１３）を経由して系外へ排出される。After that, the inverter pump (7) is driven, the raw water (4) is passed through the raw water pipe (8), the A solenoid valve (9) and the nozzle (11), and the continuous gravity is applied in the filtration tank (1). Perform filtration. Then, the treated water (5) filtered through the filter medium (3) is discharged to the outside of the system via the drain pipe (12), the C solenoid valve (14) and the treated water pipe (13).
【００１６】このような濾過過程においてＡ圧力計（１
５）、及びＢ圧力計（１７）は、原水管（８）と排水管
（１３）の管内水圧を常時検知しており、前記両者の水
圧差が所定値を越えた時、制御装置（２２）は濾材
（３）の目詰りを感知し、系内に濾過の一時中断と、濾
材の再生を指示する。In such a filtration process, the A pressure gauge (1
5) and the B pressure gauge (17) constantly detect the water pressure inside the raw water pipe (8) and the drain pipe (13), and when the water pressure difference between the two exceeds a predetermined value, the control device (22) ) Detects clogging of the filter medium (3), and instructs the system to suspend the filtration and regenerate the filter medium.
【００１７】前記指示によりインバーターポンプ（７）
は停止しこれを駆動源とする原水の流れが中断すると共
に、Ｆ電磁弁（２８），Ｇ電磁弁（３０）は開に、Ｅ電
磁弁（２６）は閉に位置し、更に空気導管（３１）を中
核とする空気供給機構が稼動する。当然Ｈ電磁弁（３
２）及びＩ電磁弁（３３）は開位置にある。According to the above instruction, the inverter pump (7)
Is stopped and the flow of raw water using this as a drive source is interrupted, the F solenoid valve (28) and the G solenoid valve (30) are open, the E solenoid valve (26) is closed, and the air conduit ( The air supply mechanism whose core is 31) operates. Of course, H solenoid valve (3
2) and the I solenoid valve (33) are in the open position.
【００１８】濾材（３）の再生は、逆洗用ポンプ（２
３）を駆動し、原水（４）を逆洗水管（２４），Ｄ電磁
弁（２５），排水管（１２）に経由させ、濾過時の原水
方向と全く逆に下から上へ濾材（３）を貫通させること
により濾材（３）の目詰り解消操作が実施される。この
際Ｈ電磁弁（３２），Ｉ電磁弁（３３）を経由した空気
が濾材の下部及び上部周辺の逆洗水を攪乱させ、エアバ
ブリングにより再生効果を更に効果的に実施させる。次
いで逆洗水は槽内を上昇し、環流口（２７）からＧ電磁
弁（３０）を通り、還流管（２９）を経て原水槽（６）
に戻る。逆洗終了後はＧ電磁弁（３０を閉止し、開状態
のＦ電磁弁（２８）を経由し、濾過槽（１）の上部に残
留した空気抜きを行なう。予め定めた一定時間濾材再生
操作を実施た後、再生は完了し、元の濾過操作に戻るの
である。The filter medium (3) is regenerated by the backwash pump (2
3) is driven to pass the raw water (4) through the backwash water pipe (24), the D electromagnetic valve (25) and the drain pipe (12), and the filter medium (3 ), The filter material (3) is cleared of clogging. At this time, the air that has passed through the H solenoid valve (32) and the I solenoid valve (33) disturbs the backwash water around the lower and upper portions of the filter medium, and the regeneration effect is further effectively performed by air bubbling. Next, the backwash water ascends in the tank, passes through the G solenoid valve (30) from the recirculation port (27), and passes through the reflux pipe (29) to the raw water tank (6).
Return to After the backwash is completed, the G solenoid valve (30 is closed, and the air remaining in the upper part of the filtration tank (1) is removed via the F solenoid valve (28) in the open state. The filter medium is regenerated for a predetermined time. After that, the regeneration is complete and the original filtration operation is resumed.
【００１９】本発明方法は上記実施例の如く実施される
もので、インバーターポンプ（７），逆洗水用ポンプ
（２３）の運停転を含めて、全電磁弁の開閉は制御装置
（２２）により一斉に自動制御される。先に説明した通
り、濾過操作は複数台の濾過装置が並列運転にて実施さ
れるのが通例であるが、この場合は、同時に実施される
再生台数を制御し、且つ全体の濾過水量を常時安定化さ
せるためインバーターポンプ（７）を使用し、その回転
数を変速制御する。The method of the present invention is carried out as in the above embodiment, and the control device (22) controls the opening and closing of all solenoid valves including the suspension of operation of the inverter pump (7) and the backwash water pump (23). ) Automatically controls all at once. As described above, the filtration operation is usually performed by a plurality of filtration devices operating in parallel, but in this case, the number of regenerated units simultaneously controlled is controlled, and the total amount of filtered water is constantly maintained. An inverter pump (7) is used for stabilization, and the rotation speed of the inverter pump is controlled.
【００２０】[0020]
【発明の効果】本発明によれば、制御装置により差圧を
常時自動監視しているので、再生タイミングが適正化さ
れ、人為的操作による忘れや遅れが解消し、又極めて安
定した通水濾過とその再生が実施出来、冒頭記載の問題
点を完全に解消することが出来る。要するに、 適正な再生による懸濁物質除去の安定と通水量の確
保。 過大な差圧の防止による装置破損の解消。 濾過・再生の適正なサイクルによる濾材の性能維持と
消耗の軽減。 濾過水量の安定化による系全体の安定化。 以上の諸効果を得ることが出来る。According to the present invention, since the differential pressure is constantly automatically monitored by the control device, the regeneration timing is optimized, forgetting and delay due to human operation are eliminated, and extremely stable water filtration. And the reproduction can be carried out, and the problems described at the beginning can be completely solved. In short, ensure proper removal of suspended solids and secure water flow through proper regeneration. Eliminates damage to equipment by preventing excessive differential pressure. Maintains the performance of filter media and reduces wear through proper cycle of filtration and regeneration. Stabilization of the entire system by stabilizing the amount of filtered water. The above various effects can be obtained.
【図１】濾過装置の全体を示す説明図である。FIG. 1 is an explanatory diagram showing an entire filtering device.
１，２ 濾過槽 ３ 濾材 ４ 原水 ５ 処理水 ６ 原水槽 ８ 原水管 １２ 排水管 １５ Ａ圧力計 １７ Ｂ圧力計 ２２ 制御装置 ２７ 環流口 ２９ 還流管 1, 2 Filter tank 3 Filter material 4 Raw water 5 Treated water 6 Raw water tank 8 Raw water pipe 12 Drain pipe 15 A pressure gauge 17 B pressure gauge 22 Control device 27 Circulation port 29 Reflux pipe
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 24/48 29/60 37/04 Ｂ０１Ｄ 23/26 Ｚ 29/36 Ｚ 29/38 ５１０ Ｂ ５２０ Ｃ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Internal reference number FI Technical display location B01D 24/48 29/60 37/04 B01D 23/26 Z 29/36 Z 29/38 510 B 520 C
Claims (2)
し、これを濾過槽下部の濾材に通して連続式重力濾過を
行なう濾過装置において、原水を供給する原水管と濾過
後の処理水を排出する排水管の水圧を夫々常時検知し、
これを電気回路を介して制御装置に報知し、その圧力差
が規定値を越えた際、前記制御装置の指示により、濾材
上部への原水供給を中継すると共に、濾材下部から上方
へ向う濾材貫通用の逆洗水を吐出させ、これを濾過槽上
部の環流口から環流管を介して槽外へ排出せしめること
を特徴とする濾過装置における濾材の再生方法。1. A raw water pipe for supplying raw water to a sealed filtration tank, and a raw water pipe for supplying the raw water and a treated water after the filtration in a filtration device for performing continuous gravity filtration by passing the raw water through a filter material at the lower portion of the filtration tank. It constantly detects the water pressure of the drain pipe that discharges
This is notified to the control device via an electric circuit, and when the pressure difference exceeds a specified value, the control device instructs the raw water supply to the upper part of the filter medium to be relayed and the filter medium penetrating upward from the lower part of the filter medium. A method for reclaiming a filter medium in a filtration device, characterized in that backwash water for use in water is discharged, and the backwash water is discharged from the recirculation port in the upper part of the filtration tank through the recirculation pipe to the outside of the tank.
周辺に空気流を吐出せしめる請求項１記載の濾過装置に
おける濾材の再生方法。2. The method for regenerating a filter medium in a filter device according to claim 1, wherein an air flow is discharged around the upper and lower surfaces of the filter medium when the backwash water is discharged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6218212A JPH0857211A (en) | 1994-08-19 | 1994-08-19 | Regeneration of filter medium in filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6218212A JPH0857211A (en) | 1994-08-19 | 1994-08-19 | Regeneration of filter medium in filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0857211A true JPH0857211A (en) | 1996-03-05 |
Family
ID=16716382
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6218212A Pending JPH0857211A (en) | 1994-08-19 | 1994-08-19 | Regeneration of filter medium in filter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0857211A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002144419A (en) * | 2000-11-15 | 2002-05-21 | Kuraray Co Ltd | Method for manufacturing vinyl alcohol polymer film for stretch processing and polarizing film |
| KR100363596B1 (en) * | 1999-07-27 | 2002-12-06 | 김명호 | The apparatus and operate method of filter |
| JP2008104962A (en) * | 2006-10-26 | 2008-05-08 | Sanyo Electric Co Ltd | Water purification device |
| JP2010000411A (en) * | 2008-06-18 | 2010-01-07 | Sanyo Electric Co Ltd | Water treatment system |
| CN104548686A (en) * | 2015-01-08 | 2015-04-29 | 奚亚明 | Filter with adjustable inner space for filter pool |
| AU2012297033B2 (en) * | 2011-08-16 | 2017-06-29 | Inventio Ag | Triggering of a lift brake in an emergency situation |
-
1994
- 1994-08-19 JP JP6218212A patent/JPH0857211A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100363596B1 (en) * | 1999-07-27 | 2002-12-06 | 김명호 | The apparatus and operate method of filter |
| JP2002144419A (en) * | 2000-11-15 | 2002-05-21 | Kuraray Co Ltd | Method for manufacturing vinyl alcohol polymer film for stretch processing and polarizing film |
| JP2008104962A (en) * | 2006-10-26 | 2008-05-08 | Sanyo Electric Co Ltd | Water purification device |
| JP2010000411A (en) * | 2008-06-18 | 2010-01-07 | Sanyo Electric Co Ltd | Water treatment system |
| AU2012297033B2 (en) * | 2011-08-16 | 2017-06-29 | Inventio Ag | Triggering of a lift brake in an emergency situation |
| CN104548686A (en) * | 2015-01-08 | 2015-04-29 | 奚亚明 | Filter with adjustable inner space for filter pool |
| CN104548686B (en) * | 2015-01-08 | 2016-02-24 | 奚亚明 | Adjustable inner space filter device |
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