JPH01310707A - Methods for separating filter cake from filter cloth and for discharging filter cake in filtering hydrous substance - Google Patents
Methods for separating filter cake from filter cloth and for discharging filter cake in filtering hydrous substanceInfo
- Publication number
- JPH01310707A JPH01310707A JP13944288A JP13944288A JPH01310707A JP H01310707 A JPH01310707 A JP H01310707A JP 13944288 A JP13944288 A JP 13944288A JP 13944288 A JP13944288 A JP 13944288A JP H01310707 A JPH01310707 A JP H01310707A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- filter cloth
- slag
- outside
- cloth
- 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
- 239000004744 fabric Substances 0.000 title claims abstract description 86
- 238000001914 filtration Methods 0.000 title claims abstract description 59
- 238000007599 discharging Methods 0.000 title claims abstract description 17
- 239000012065 filter cake Substances 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims description 26
- 239000000126 substance Substances 0.000 title claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000706 filtrate Substances 0.000 claims abstract description 31
- 239000010802 sludge Substances 0.000 claims abstract description 30
- 239000007788 liquid Substances 0.000 claims abstract description 11
- 239000002893 slag Substances 0.000 claims description 48
- 239000011550 stock solution Substances 0.000 claims description 32
- 239000000463 material Substances 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000005192 partition Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本願発明は、各種産業廃液や上、下水道の汚水等を浄化
処理する際に生しる汚泥水等の含水物の濾過方法におけ
る濾布からの濾滓剥離方法及び濾滓排出方法に関する。Detailed Description of the Invention (Field of Industrial Application) The present invention is applicable to filter cloths used in methods for filtering water-containing substances such as sludge water generated during purification of various industrial waste liquids and sewage water, etc. The present invention relates to a filter dregs peeling method and a filter dregs discharge method.
（従来の技術）
従来、例えば汚泥水の濾過方法として、槽内を上室及び
下室に区分された処理槽内に、外面に濾布を有する濾過
筒を上記上室と連通状態で上記下室内に懸下し、上記下
室内に圧送された汚泥水を上記濾過筒で濾過し、その濾
滓を上記濾布で捕捉しつつ濾液を上記濾過筒内から処理
槽外へ排出し、所定の濾過完了後上記濾布外面に堆積さ
れた濾滓を濾布外面から剥離して処理槽外へ排出し、以
下これを繰返していく濾過方法が一般に使用されている
が、その濾布からの濾滓剥離方法としては、所定の濾過
完了後、上記濾過筒の外部に残存する汚泥水を処理槽外
へ排出した後上記濾過筒内に吸気作用を加えて該濾過筒
内に残存する濾液を処理槽外へ排出し、次に、筒内外と
も空になった濾過筒内に圧縮空気を吹きこみ、これを濾
布を通して濾過筒外に放出させ、それにより濾布外面に
付着する濾滓を剥離する方法が採られており、又剥離＝
３−
した濾滓の排出方法としては、上記剥離工程における濾
過筒内への圧縮空気の吹きこみをさらに継続し、濾過筒
外に放出される圧縮空気によって剥離濾滓を処理槽外へ
送り出す方法が採られている。(Prior Art) Conventionally, for example, as a filtration method for sludge water, a filtration cylinder having a filter cloth on the outer surface is placed in a treatment tank that is divided into an upper chamber and a lower chamber, and is connected to the upper chamber and the lower chamber. The sludge water suspended in the room and pumped into the lower chamber is filtered by the filter cylinder, and the filter slag is captured by the filter cloth while the filtrate is discharged from inside the filter cylinder to the outside of the treatment tank. After filtration is completed, the filter slag accumulated on the outer surface of the filter cloth is peeled off from the outer surface of the filter cloth and discharged to the outside of the processing tank, and this process is then repeated. The sludge removal method includes, after completion of a predetermined filtration, draining the sludge water remaining outside the filtration cylinder to the outside of the treatment tank, and then applying an intake action to the filtration cylinder to treat the filtrate remaining in the filtration cylinder. The air is discharged to the outside of the tank, and then compressed air is blown into the empty filter cylinder both inside and outside the cylinder, and the air is released through the filter cloth to the outside of the filter cylinder, thereby peeling off the filter slag that adheres to the outer surface of the filter cloth. A method of peeling is adopted, and peeling =
3- As a method for discharging the filter dregs, the blowing of compressed air into the filter cylinder in the above-mentioned stripping step is further continued, and the peeled filter dregs is sent out of the processing tank by the compressed air released outside the filter cylinder. is taken.
（発明が解決しようとする課題）
しかし、従来の濾布からの濾滓剥離方法は、濾過筒内に
吹きこまれた圧縮空気が濾滓の薄い部分から濾過筒外に
放出されるため、未剥離の濾滓が残る欠点があり、又従
来の剥離濾滓の排出方法は。(Problem to be solved by the invention) However, in the conventional method of peeling filter slag from a filter cloth, the compressed air blown into the filter cylinder is released from the thin part of the filter cylinder, so it is difficult to remove the filter slag from the filter cloth. There is a drawback that the peeling residue remains, and the conventional method for discharging the peeling residue has the disadvantage that it leaves a residue after peeling.
多量の圧縮空気を消費するばかりでなく、完全排出に長
時間を要する等の難点があった。Not only does this consume a large amount of compressed air, but it also takes a long time to completely discharge the air.
本願第１発明は、濾滓を濾布からムラなく十分に剥離す
ることを課題とする。An object of the first invention of the present application is to remove filter dregs from a filter cloth evenly and sufficiently.
本願第２発明は、多量の圧縮空気消費の欠点を除くと共
に短時間で剥離濾滓の排出を行うことを課題とし、又本
願第３発明は、第２発明の課題に加えて、さらに剥離濾
滓排出工程の能率化を課題とする。The object of the second invention of the present application is to eliminate the disadvantage of consuming a large amount of compressed air and to discharge the peeling filter slag in a short time. The challenge is to streamline the slag discharge process.
（課題を解決するための手段）
上記課題を解決するため、本願第１発明は、濾布の外部
に原液を供給して該濾布で濾過し、その濾滓を上記濾布
外面で捕捉しっつ濾液を上記濾布内部から排出し、所定
の濾過完了後濾滓を濾布外面から剥離して排出する濾過
方法において、上記濾滓剥離工程は、
上記所定の濾過完了後、上記濾布の内部及び外部の残存
液を排出すると共に、上記濾布外部よりも濾布内部を低
圧にすることにより濾布外面に堆積された濾滓を濾布に
密着させ、
次に、上記濾布外部に液体を、濾布に密着された濾滓全
面を浸すように注入し、
次に、上記濾布内部から外部に向う圧力空気を送り、こ
れを濾布全面を通って外部の液体中に噴出させることに
より濾布外面全面から濾滓を剥離させる、ことからなる
、
構成を採り、
本願第２発明は、
処理槽内に配置された外面に濾布を有する濾過筒の外部
に原液を供給して該濾過筒で濾過し、その濾滓を上記濾
布外面に捕捉しつつ濾液を上記濾過筒内から処理槽外へ
排出し、所定の濾過完了後濾滓を濾布外面から剥離して
排出することを繰返す濾過方法において、
上記濾滓排出工程は、
上記所定の濾過完了後、上記濾過筒外部に濾滓排出用原
液を注入し、該原液中に上記濾布外面から濾滓を剥離し
て放出し、
次に、上記濾過筒外部に新たな原液を供給して次回の濾
過を再開する前に、又は再開と同時に、もしくは再開濾
過中に上記濾滓排出用原液と共に上記濾滓を処理槽外へ
流出させる、ことからなる、構成とし、
又本願第３発明は、
処理槽内に配置された外面に濾布を有する濾過筒の外部
に原液を供給して該濾過筒で濾過し、その濾滓を上記濾
布外面に捕捉しつつ濾液を」二記濾過筒内から処理槽外
へ排出し、所定の濾過完了後濾滓を濾布外面から剥離し
て排出することを繰返す濾過方法において、
上記濾滓排出工程は、
上記所定の濾過完了後上記濾過筒外部に残存する原液を
排出して濾滓剥離準備をした後、上記濾過筒外部に濾滓
排出用原液を注入し、該原液中に上記濾布外面から濾滓
を剥離して沈澱させ、次に、上記濾滓を沈澱させたまま
、次回の濾過を再開して所定の濾過を完了した後、上記
濾過筒外部に残存する原液と共に上記沈澱濾滓を処理槽
外へ流出させる、ことからなる、
構成とした。以下図面を参照して本願発明の実施例につ
いて説明する。(Means for Solving the Problems) In order to solve the above problems, the first invention of the present application supplies a stock solution to the outside of a filter cloth, filters it through the filter cloth, and captures the filter slag on the outer surface of the filter cloth. In the filtration method, the filtrate is discharged from the inside of the filter cloth, and after a predetermined filtration is completed, the filter slag is peeled off from the outer surface of the filter cloth and discharged. The remaining liquid inside and outside of the filter cloth is discharged, and the pressure inside the filter cloth is made lower than that outside the filter cloth, so that the filter slag accumulated on the outer surface of the filter cloth is brought into close contact with the filter cloth. Liquid is injected into the filter so that the entire surface of the filter slag that is in close contact with the filter cloth is immersed. Next, pressurized air is sent from inside the filter cloth to the outside, and this air is ejected through the entire surface of the filter cloth into the liquid outside. The second invention of the present application has a structure in which filter dregs are peeled off from the entire outer surface of the filter cloth by The filtrate is then filtered through the filter cylinder, and the filtrate is captured on the outer surface of the filter cloth while the filtrate is discharged from the inside of the filter cylinder to the outside of the processing tank, and after the completion of predetermined filtration, the filter slag is peeled off from the outer surface of the filter cloth and discharged. In a filtration method that repeats the above steps, the slag discharge step includes injecting a filtrate discharge stock solution into the outside of the filter cylinder after the completion of the predetermined filtration, and peeling the slag from the outer surface of the filter cloth into the stock solution. Next, supplying a new stock solution to the outside of the filter cylinder and treating the filter slag with the stock solution for slag discharge before restarting the next filtration, or at the same time as the restart, or during restart filtration. Further, the third invention of the present application is configured to supply the stock solution to the outside of a filter cylinder arranged in the processing tank and having a filter cloth on the outer surface, and filter it with the filter cylinder, A filtration method in which the filtrate is captured on the outer surface of the filter cloth, the filtrate is discharged from the inside of the filter cylinder to the outside of the processing tank, and after the specified filtration is completed, the filtrate is peeled off from the outer surface of the filter cloth and discharged. In the filter slag discharge step, after the predetermined filtration is completed, the stock solution remaining outside the filter cylinder is discharged to prepare for filter slag removal, and then the stock solution for filter slag discharge is injected into the outside of the filter cylinder, The filter dregs are peeled off from the outer surface of the filter cloth in the stock solution and precipitated, and then the next filtration is restarted with the filter dregs precipitated and the predetermined filtration is completed, and then the filter dregs remains outside the filter cylinder. The above-mentioned precipitated filtrate is discharged out of the treatment tank along with the stock solution. Embodiments of the present invention will be described below with reference to the drawings.
（実施例）
まず、本願発明方法に使用する濾過装置について説明す
る。第１図において、処理槽（１）内の上部に隔壁（２
）を設けて該槽（１）内を上室（３）及び下室（４）に
区分し、上記隔壁（２）に多数本の濾過筒（５）（便宜
上１本のみを表示した）を王室（４）内に懸下する状態
に支持させ、一方の王室（４）の側壁中間位置に原液供
給弁（７）を介して原液供給管（６）を、上部位置に空
気抜き弁（９）を介して大気中に開口する空気抜き管（
８）を、又ロート状底部中心位置に排出弁（１１）を介
して排出管（１０）をそれぞれ接続し、又他方の上室（
３）の土壁には先端を上記隔壁（２）近くまで貫通垂下
する排出管（１２）及び加圧エア供給弁（１４）を介し
て加圧エア供給管（１３）をそれぞれ接続し、上記排出
管（１２）は濾液排出弁（１６）及び吸気弁（１８）を
介して濾液排出管（１５）及び吸気管（１７）に分岐し
である。(Example) First, a filtration device used in the method of the present invention will be described. In Figure 1, a partition wall (2
) to divide the inside of the tank (1) into an upper chamber (3) and a lower chamber (4), and a large number of filter cylinders (5) (only one is shown for convenience) in the partition wall (2). It is supported in a suspended state within the royal chamber (4), and the concentrated solution supply pipe (6) is connected to the middle position of the side wall of one of the royal chambers (4) via the concentrated solution supply valve (7), and the air vent valve (9) is installed at the upper position. Air vent pipe that opens to the atmosphere through
8), and a discharge pipe (10) is connected to the center of the funnel-shaped bottom via a discharge valve (11), and the other upper chamber (
A pressurized air supply pipe (13) is connected to the soil wall of 3) through a discharge pipe (12) and a pressurized air supply valve (14) whose tips extend through and hang down near the partition wall (2). The discharge pipe (12) branches into a filtrate discharge pipe (15) and an intake pipe (17) via a filtrate discharge valve (16) and an intake valve (18).
上記濾過筒（５）は外周面に濾布（１９）を張設した中
空円筒体で、その閉成一端部を隔壁（２）に取付けて垂
下すると共に、上記閉成一端部から内管（２０）を濾過
筒（５）内に挿入し、該内管（２０）の上端を上室（３
）内に開口させである。The filter tube (5) is a hollow cylindrical body with a filter cloth (19) stretched over its outer peripheral surface, and its closed end is attached to the partition wall (2) and hangs down, and the inner tube ( 20) into the filter tube (5), and insert the upper end of the inner tube (20) into the upper chamber (3).
).
裏」」己月１λ発画−
上記濾過装置を使用した本願第１及び第２発明の一連の
実施例について濾過方法と共に説明する。A series of embodiments of the first and second inventions of the present application using the above-mentioned filtration device will be described together with a filtration method.
原液供給弁（７）及び濾液排出弁（１６）を開き、原液
供給管（６）から原液として汚泥水（Ｓ）を王室（４）
内に圧送する。第１図示のように下室（４）内に充満し
た汚泥水（Ｓ）は濾過筒（５）の濾布（１９）で濾過さ
れ、その濾滓（Ｃ）は濾布（１９）の外面に捕捉されつ
つ濾液（ｆ）が濾過筒内部を通って上室（３）内に圧送
され、ついで濾液排出管（１５）を経て例えば濾液回収
タンク（図示略）に排出される。Open the stock solution supply valve (7) and filtrate discharge valve (16), and pour the sludge water (S) as a stock solution from the stock solution supply pipe (6) into the chamber (4).
to be pumped inside. As shown in the first diagram, the sludge water (S) filling the lower chamber (4) is filtered by the filter cloth (19) of the filter tube (5), and the filter slag (C) is formed on the outer surface of the filter cloth (19). The filtrate (f) is forced into the upper chamber (3) through the inside of the filtration cylinder, and is then discharged to, for example, a filtrate recovery tank (not shown) through the filtrate discharge pipe (15).
上記の濾過を継続していくに伴い濾過筒（５）の濾布（
１９）外面に濾滓（Ｃ）が堆積していき（第２図）、所
定の濾過かを完了したとき上記原液供給弁（７）及び濾
液排出弁（１６）を閉じ、濾過を停止する。As the above filtration continues, the filter cloth (
19) Filter dregs (C) accumulates on the outer surface (Fig. 2), and when the prescribed filtration is completed, the stock solution supply valve (7) and the filtrate discharge valve (16) are closed to stop the filtration.
次に、大気開放弁（９）及び排出弁（１１）を開いて第
２図示のように下室（４）内に残存する汚泥水（Ｓ）を
排出管（１０）を通じて排出する。Next, the atmosphere release valve (9) and the discharge valve (11) are opened to discharge the sludge water (S) remaining in the lower chamber (4) through the discharge pipe (10) as shown in the second diagram.
次に、濾滓剥離準備として、第３図示のように吸気弁（
１８）を開き、真空ポンプ等により吸気管（１７）を通
じて上室（３）及び濾過筒（５）内部に吸気作用を及ぼ
すと共に、本例ではさらに原液供給管（６）から分岐し
た管（２１）を通じてコンプレッサ等により王室（４）
内に圧縮空気を送りこみ、それにより濾過筒（５）内に
残存する濾液を吸い出すと共に、濾布（１９）の外面に
堆積する濾滓（Ｃ）を濾布外面に強く密着させる。この
ようにすれば、濾過筒（５）の内部及び外部がともに空
の状態になっても濾滓（Ｃ）が崩落することなく、濾布
外面に緻密な濾滓層を形成する。Next, in preparation for removing the filter cake, as shown in the third figure, the intake valve (
18) is opened, and a vacuum pump or the like is used to apply air suction to the upper chamber (3) and the inside of the filter cylinder (5) through the suction pipe (17). ) through the compressor etc. (4)
Compressed air is sent into the filter cylinder (5), thereby sucking out the filtrate remaining in the filter cylinder (5) and bringing the filter dregs (C) accumulated on the outer surface of the filter cloth (19) into close contact with the outer surface of the filter cloth. In this way, even if both the inside and outside of the filter cylinder (5) are empty, the filter dregs (C) will not collapse, and a dense filter dregs layer will be formed on the outer surface of the filter cloth.
次に、第４図示のように大気開放弁（９）及び原液供給
弁（７）を開き、原液供給管（６）から濾滓排出用汚泥
水（Ｓ′）を王室（４）内に注入し、該汚泥水（Ｓ′）
で濾過筒外面の濾滓（Ｃ）全面を浸す６濾布（１９）外
面の濾滓（Ｃ）は、汚泥水（Ｓ′）中に崩落することな
く、濾布外面への密着を維持する。Next, as shown in Figure 4, open the atmosphere release valve (9) and the stock solution supply valve (7), and inject the sludge water (S') for filter dregs discharge into the chamber (4) from the stock solution supply pipe (6). The sludge water (S')
6) Soak the entire surface of the filter slag (C) on the outside of the filter cylinder with 6. The filter slag (C) on the outside of the filter cloth (19) maintains close contact with the outside surface of the filter cloth without collapsing into the sludge water (S'). .
次に、大気開放弁（９）及び加圧エア供給弁（１４）を
開き、加圧エア供給管（１３）から圧縮空気を上室（３
）を経て濾過筒（５）内に吹きこむ。吹きこまれた圧縮
空気は空の濾過筒（５）内で濾布（１９）の内面に均等
に作用し、そして緻密に形成された濾滓（Ｇ）を押しの
けて濾布外部へ吹き出すが、その際濾布外部の汚泥水（
Ｓ′）の抵抗により濾布（１９）全面からほぼ均一に吹
き出すこととなり、それにより濾滓（Ｃ）がムラなく濾
布外面から離れ、ついで脱落していく。脱落した濾滓（
Ｃ）は下室（４）の底部に沈澱する。Next, open the atmosphere release valve (9) and pressurized air supply valve (14) to supply compressed air from the pressurized air supply pipe (13) to the upper chamber (3).
) and into the filter cylinder (5). The blown compressed air acts uniformly on the inner surface of the filter cloth (19) within the empty filter cylinder (5), pushes away the densely formed filter dregs (G), and blows out to the outside of the filter cloth. At that time, the sludge water outside the filter cloth (
Due to the resistance of S'), the filter cloth (19) is blown out almost uniformly from the entire surface of the filter cloth (19), so that the filter slag (C) evenly leaves the outer surface of the filter cloth and then falls off. The filter dregs that fell off (
C) settles at the bottom of the lower chamber (4).
濾滓が軽い場合、又は濾布に付着した濾滓層が薄い場合
等に、上記の剥離工程によっては濾布から離れるが脱落
しにくいことがある。この場合は、エア供給管（１３）
を通じて圧縮空気を濾過筒から外部へ短時間（数秒）づ
つ数回断続的に噴射し、その気泡上昇により濾滓を脱落
させる方法を採るのもよい。When the filter dregs are light, or when the filter dregs layer attached to the filter cloth is thin, the filter dregs may be separated from the filter cloth but difficult to fall off depending on the above peeling process. In this case, the air supply pipe (13)
It is also a good idea to inject compressed air from the filter cylinder to the outside several times intermittently for short periods of time (several seconds) each time, and to cause the filter slag to fall off as the air bubbles rise.
次に、第６図示のように排出弁（１１）を開き、排出管
（１０）から沈澱した濾滓（Ｃ）を汚泥水（Ｓ′）と共
に排出し、それと同時に原液供給弁（７）及び濾液排出
弁（１６）を開き、原液供給管（６）から新たな汚泥水
（Ｓ）を王室（４）内に圧送し、次回の濾過を再開する
。上記濾滓の排出は、排出用汚泥水（Ｓ′）の流れにの
って短時間で円滑に行われると共に、次回の濾過開始と
同時に行うことにより排出工程の所要時間を短縮できる
。Next, as shown in Figure 6, the discharge valve (11) is opened to discharge the precipitated filtrate (C) from the discharge pipe (10) together with the sludge water (S'), and at the same time, the stock solution supply valve (7) and Open the filtrate discharge valve (16), force new sludge water (S) from the stock solution supply pipe (6) into the royal chamber (4), and restart the next filtration. The filter dregs can be smoothly discharged in a short time along with the flow of the discharge sludge water (S'), and the time required for the discharge step can be shortened by carrying out the discharge at the same time as the start of the next filtration.
濾滓の排出工程は、濾滓が種類によって沈澱しにくい場
合又は沈澱に相当の時間がかかる場合は、上側のほかに
、濾過を再開する前、又は濾過の再開中において濾滓が
十分に沈澱したときに汚泥水と共に排出する方法を採る
こともできる。In the filter slag discharge process, if the filter slag is difficult to settle depending on the type, or if it takes a considerable amount of time to settle, in addition to the upper part, the filter slag should be sufficiently settled before or during the restart of filtration. It is also possible to adopt a method of discharging the sludge together with the sludge water.
裏」」１丼
上記濾過装置を使用した本願第３発明の実施例について
上記図面を援用して説明する。An embodiment of the third invention of the present application using the above-mentioned filtration device will be described with reference to the above-mentioned drawings.
まず、第１図示のように王室（４）内に汚泥水（Ｓ）を
圧送して濾過を開始し、次に所定の濾過が完了したとき
第２図示のように下室（４）内に残存する汚泥水（Ｓ）
を排出し、次に、濾滓剥離準備として第３図示のように
濾過筒（５）内に吸気作用を加えて濾過筒（５）内に残
存する濾液の吸い出し及び濾布（１９）外面に堆積する
濾滓（Ｃ）の濾布外面への密着を行い、次に第４図示の
ように下室（４）内に濾滓排出用汚泥水（Ｓ′）を張り
、次に第５図示のように圧縮空気を濾過筒（５）内に吹
きこんで濾滓（Ｃ）を濾過筒（５）から剥離脱落させる
。次に、濾滓（Ｃ）を王室（４）底部に沈澱させたまま
、新たな汚泥水を王室（４）内に圧送して次回の濾過を
再開し、次に所定の濾過が完了したとき、第２図と同様
に下室（４）内に残存する汚泥水と、その底部に沈澱し
ている前回の濾過の濾滓とを排出し、以下同様の工程を
繰返していく。このように濾滓の−１３−Ａｔ
排出を次回の濾過後残存する汚泥水の排出と共に行うこ
とにより、排出工程に要する作業時間を短縮できる。First, as shown in the first diagram, sludge water (S) is pumped into the chamber (4) to start filtration, and then, when the prescribed filtration is completed, it is pumped into the lower chamber (4) as shown in the second diagram. Residual sludge water (S)
Next, in preparation for peeling off the filter dregs, suction action is applied to the inside of the filter tube (5) as shown in the third figure to suck out the filtrate remaining in the filter tube (5) and apply it to the outer surface of the filter cloth (19). The accumulated filter dregs (C) are brought into close contact with the outer surface of the filter cloth, and then the lower chamber (4) is filled with sludge water (S') for discharging the filter dregs as shown in the 5th figure. Compressed air is blown into the filter tube (5) to cause the filter cake (C) to peel off and fall from the filter tube (5). Next, the next filtration is restarted by pumping new sludge water into the royal chamber (4) while leaving the filter cake (C) to settle at the bottom of the royal chamber (4), and when the next prescribed filtration is completed. As in FIG. 2, the sludge water remaining in the lower chamber (4) and the filter dregs from the previous filtration settled at the bottom are discharged, and the same process is repeated. In this way, by discharging -13-At from the filter cake together with discharging the sludge water remaining after the next filtration, the working time required for the discharging step can be shortened.
（発明の効果）
本願第１発明の含水物濾過方法における濾布からの濾滓
剥離方法によれば、濾布外面に堆積された濾滓層に厚薄
があっても濾滓全体がムラなく、しかも十分に剥離する
ことができるのである。(Effects of the Invention) According to the method for peeling filter dregs from a filter cloth in the water-containing material filtration method of the first invention of the present application, even if the filtration dregs layer deposited on the outer surface of the filter cloth is thick or thin, the entire filter dregs are evenly distributed. Moreover, it can be sufficiently peeled off.
本願第２発明の含水物濾過方法における濾滓排出方法に
よれば、濾布外面に堆積した濾滓を剥離して排出用原液
中に放出し、該排出用原液と共トこ流出することにより
短時間に円滑しこ排出することができるのである。According to the filter slag discharge method in the water-containing material filtration method of the second invention of the present application, the filter slag accumulated on the outer surface of the filter cloth is peeled off and released into the stock solution for discharge, and flows out together with the stock solution for discharge. This allows for smooth drainage in a short period of time.
本願第３発明の含水物濾過方法における濾滓排出方法に
よれば、排出工程に要する作業を短縮することができ、
作業能率の向上を実現できるのである。According to the filter slag discharge method in the water-containing material filtration method of the third invention of the present application, the work required for the discharge step can be shortened,
This makes it possible to improve work efficiency.
図面は本願発明の実施例を示し、第１図は濾ミー
−１Ａ−過工程を示す処理
槽の路線断面図、第２図は残存原液排出工程の同上断面
図、第３図は濾滓密着工程の同上断面図、第４図は濾滓
排出用液張り工程の同上断面図、第５図は剥離工程の同
上断面図、第６図は濾滓排出工程の同上断面図である。
Ｓ・・汚泥水、Ｓ′・・濾滓排出用汚泥水、Ｃ・濾滓、
ｆ・・・濾液、１・処理槽、５・・・濾過筒、１９・・
・濾布。
オ ５ 図
オ６ 図The drawings show an embodiment of the present invention, and FIG.
-1A- A line cross-sectional view of the treatment tank showing the filtration process, Figure 2 is a cross-sectional view of the same as above for the residual stock solution discharge process, Figure 3 is a cross-sectional view of the same as the above for the filter dregs adhesion process, and Figure 4 is a sectional view of the same as the above for the filtrate discharge process. FIG. 5 is a cross-sectional view of the same as the above of the process, FIG. 5 is a cross-sectional view of the same as the above of the peeling process, and FIG. 6 is a cross-sectional view of the same as the above of the filter dregs discharge process. S...Sludge water, S'...Sludge water for filter slag discharge, C. Filter slag,
f...Filtrate, 1. Processing tank, 5... Filter cylinder, 19...
・Filter cloth. O 5 Figure O 6 Figure
Claims (3)
の濾滓を上記濾布外面で捕捉しつつ濾液を上記濾布内部
から排出し、所定の濾過完了後濾滓を濾布外面から剥離
して排出する濾過方法において、 上記濾滓剥離工程は、 上記所定の濾過完了後、上記濾布の内部及 び外部の残存液を排出すると共に、上記濾布外部よりも
濾布内部を低圧にすることにより濾布外面に堆積された
濾滓を濾布に密着させ、次に、上記濾布外部に液体を、
濾布に密着 された濾滓全面を浸すように注入し、 次に、上記濾布内部から外部に向う圧力空 気を送り、これを濾布全面を通って外部の液体中に噴出
させることにより濾布外面全面から濾滓を剥離させる、
ことからなる、 含水物濾過方法における濾布からの濾滓剥離方法。(1) Supply the stock solution to the outside of the filter cloth, filter it through the filter cloth, and discharge the filtrate from inside the filter cloth while capturing the filter slag on the outer surface of the filter cloth, and remove the filter slag after completing the specified filtration. In the filtration method in which the filter cloth is peeled off and discharged from the outer surface, the filter cloth peeling step includes draining the residual liquid inside and outside the filter cloth after the completion of the predetermined filtration, and removing the filter cloth from the outside of the filter cloth. By creating a low pressure inside the filter cloth, the filter dregs deposited on the outer surface of the filter cloth are brought into close contact with the filter cloth, and then the liquid is poured onto the outside of the filter cloth.
The filter is injected so that the entire surface of the filter slag that is in close contact with the filter cloth is immersed, and then pressurized air is sent from inside the filter cloth to the outside, and the air is ejected through the entire surface of the filter cloth into the liquid outside. Peel off the filter cake from the entire outer surface of the fabric.
A method for peeling filter slag from a filter cloth in a water-containing substance filtration method.
の外部に原液を供給して該濾過筒で濾過し、その濾滓を
上記濾布外面に捕捉しつつ濾液を上記濾過筒内から処理
槽外へ排出し、所定の濾過完了後濾滓を濾布外面から剥
離して排出することを繰返す濾過方法において、 上記濾滓排出工程は、 上記所定の濾過完了後、上記濾過筒外部に濾滓排出用原
液を注入し、該原液中に上記濾布外面から濾滓を剥離し
て放出し、 次に、上記濾過筒外部に新たな原液を供給して次回の濾
過を再開する前に、又は再開と同時に、もしくは再開濾
過中に上記濾滓排出用原液と共に上記濾滓を処理槽外へ
流出させる、ことからなる、 含水物濾過方法における濾滓排出方法。(2) The stock solution is supplied to the outside of a filter cylinder having a filter cloth on the outer surface arranged in the processing tank, and is filtered by the filter cylinder, and the filtrate is captured on the outer surface of the filter cloth while the filtrate is transferred to the filter cylinder. In a filtration method that repeats discharging the filter cloth from the inside to the outside of the processing tank, and after completing a predetermined filtration, peeling off the filter slag from the outer surface of the filter cloth and discharging it, the filter slag discharge step includes: A stock solution for discharging filter slag is injected to the outside, and the filter slag is peeled off from the outer surface of the filter cloth and released into the stock solution. Next, a new stock solution is supplied to the outside of the filter cylinder to restart the next filtration. A method for discharging filter slag in a water-containing material filtration method, which comprises: flowing the filter slag out of the treatment tank together with the stock solution for sludge discharge before or at the same time as restarting filtration, or during restart filtration.
の外部に原液を供給して該濾過筒で濾過し、その濾滓を
上記濾布外面に捕捉しつつ濾液を上記濾過筒内から処理
槽外へ排出し、所定の濾過完了後濾滓を濾布外面から剥
離して排出することを繰返す濾過方法において、 上記濾滓排出工程は、 上記所定の濾過完了後上記濾過筒外部に残存する原液を
排出して濾滓剥離準備をした後、上記濾過筒外部に濾滓
排出用原液を注入し、該原液中に上記濾布外面から濾滓
を剥離して沈澱させ、 次に、上記濾滓を沈澱させたまま、次回の濾過を再開し
て所定の濾過を完了した後、上記濾過筒外部に残存する
原液と共に上記沈澱濾滓を処理槽外へ流出させる、こと
からなる、 含水物濾過方法における濾滓排出方法。(3) The stock solution is supplied to the outside of a filter cylinder having a filter cloth on the outer surface arranged in the processing tank, and is filtered by the filter cylinder, and the filtrate is captured on the outer surface of the filter cloth while the filtrate is transferred to the filter cylinder. In a filtration method that repeatedly discharges filter slag from the inside to the outside of the processing tank, and then peels off the filter slag from the outer surface of the filter cloth and discharges it after completing a predetermined filtration, the filter slag discharge step includes: After discharging the remaining stock solution and preparing for removing the filter dregs, a stock solution for discharging the filter dregs is injected into the outside of the filter cylinder, and the filter dregs are separated from the outer surface of the filter cloth and precipitated in the stock solution, and then , restarting the next filtration while leaving the filter slag to settle, and after completing the predetermined filtration, the precipitated filter slag flows out of the processing tank together with the stock solution remaining outside the filter cylinder, A method for discharging slag in a water-containing material filtration method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13944288A JP2707277B2 (en) | 1988-06-08 | 1988-06-08 | Method for removing filter cake from filter cloth and method for discharging filter cake in hydrate filtration method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13944288A JP2707277B2 (en) | 1988-06-08 | 1988-06-08 | Method for removing filter cake from filter cloth and method for discharging filter cake in hydrate filtration method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01310707A true JPH01310707A (en) | 1989-12-14 |
| JP2707277B2 JP2707277B2 (en) | 1998-01-28 |
Family
ID=15245296
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13944288A Expired - Fee Related JP2707277B2 (en) | 1988-06-08 | 1988-06-08 | Method for removing filter cake from filter cloth and method for discharging filter cake in hydrate filtration method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2707277B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015100743A (en) * | 2013-11-25 | 2015-06-04 | 株式会社流機エンジニアリング | Filtration method and apparatus for the same |
| CN110743225A (en) * | 2019-11-26 | 2020-02-04 | 清远楚江铜业有限公司 | Copper industry waste water treatment equipment |
| JP2020049404A (en) * | 2018-09-25 | 2020-04-02 | オルガノ株式会社 | Filtering device |
-
1988
- 1988-06-08 JP JP13944288A patent/JP2707277B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015100743A (en) * | 2013-11-25 | 2015-06-04 | 株式会社流機エンジニアリング | Filtration method and apparatus for the same |
| JP2020049404A (en) * | 2018-09-25 | 2020-04-02 | オルガノ株式会社 | Filtering device |
| CN110743225A (en) * | 2019-11-26 | 2020-02-04 | 清远楚江铜业有限公司 | Copper industry waste water treatment equipment |
| CN110743225B (en) * | 2019-11-26 | 2021-12-03 | 清远楚江铜业有限公司 | Copper industry waste water treatment equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2707277B2 (en) | 1998-01-28 |
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