JP2688876B2 - Dehydration method with filter press - Google Patents
Dehydration method with filter pressInfo
- Publication number
- JP2688876B2 JP2688876B2 JP5186403A JP18640393A JP2688876B2 JP 2688876 B2 JP2688876 B2 JP 2688876B2 JP 5186403 A JP5186403 A JP 5186403A JP 18640393 A JP18640393 A JP 18640393A JP 2688876 B2 JP2688876 B2 JP 2688876B2
- Authority
- JP
- Japan
- Prior art keywords
- filter
- dehydrated
- inlet
- liquid
- diaphragm
- 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.)
- Expired - Lifetime
Links
- 238000000034 method Methods 0.000 title claims description 14
- 230000018044 dehydration Effects 0.000 title claims description 13
- 238000006297 dehydration reaction Methods 0.000 title claims description 13
- 239000004744 fabric Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000007664 blowing Methods 0.000 claims description 13
- 239000000706 filtrate Substances 0.000 claims description 8
- 238000003825 pressing Methods 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims 2
- 239000010802 sludge Substances 0.000 description 15
- 208000005156 Dehydration Diseases 0.000 description 8
- 238000004804 winding Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005370 electroosmosis Methods 0.000 description 2
- 239000000725 suspension Substances 0.000 description 2
- 238000004891 communication Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Treatment Of Sludge (AREA)
- Filtration Of Liquid (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、余剰汚泥，上水汚泥等
の被脱水処理液を加圧により圧搾脱水を行うフィルター
プレスでの脱水方法、特に電気浸透脱水機による脱水方
法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a dehydration method using a filter press for compressing and dehydrating liquid to be dehydrated such as excess sludge and tap water sludge, and more particularly to an electroosmotic dehydrator.
【０００２】[0002]
【従来の技術】従来より、余剰汚泥等の被脱水処理液の
脱水を行うために、フィルタープレスと称される脱水装
置が使用され、特に近年では脱水効率を向上させる観点
から、電気浸透作用を利用した電気浸透脱水機が使用さ
れている。2. Description of the Related Art Conventionally, a dehydrator called a filter press has been used for dehydrating a liquid to be dehydrated such as excess sludge, and in recent years, an electroosmotic action has been particularly taken from the viewpoint of improving dehydration efficiency. The used electroosmotic dehydrator is used.
【０００３】すなわち、このフィルタープレス型電気浸
透脱水機は、図１に示すように被脱水処理液の流入口10
と濾液の排出口９とを有する濾板1a,1b 間に電極板2a,2
b を介して濾布4a,4b が配設され、且つ一方の濾板1aと
濾布4a間に電極板2aを装着したダイヤフラム３が介装さ
れ、該濾布4a,4b 内の汚泥が前記ダイヤフラム３の往動
によって前記濾布4a,4b を介して圧搾濾過される構成に
してなるものである。That is, as shown in FIG. 1, this filter press type electroosmotic dehydrator has an inlet 10 for a liquid to be dehydrated.
And electrode plates 2a, 2 between filter plates 1a, 1b having a discharge port 9 for filtrate.
Filter cloths 4a, 4b are disposed via b, and a diaphragm 3 having an electrode plate 2a is interposed between one filter plate 1a and the filter cloth 4a. Sludge in the filter cloths 4a, 4b is The diaphragm 3 is compressed and filtered by the forward movement of the diaphragm 3 through the filter cloths 4a and 4b.
【０００４】そして、このような電気浸透脱水機で脱水
を行う場合には、先ず図２に示すように上記流入口10か
ら汚泥等の被脱水処理液を流入して濾布4a,4b 間に形成
されている濾室内に圧入し、次に図３に示すように一方
の濾板1aとダイヤフラム３との間に圧力空気を導入して
一方の電極板2aを介して他方の電極板2bとの間に濾布4
a,4b 内の汚泥ケーキを圧搾圧力により挟圧し、その
後、上記電極板2a,2b に直流電圧を加えると、電気浸透
作用により、濾室内で所定の含水率まで脱水させるもの
である。When performing dehydration with such an electroosmotic dehydrator, first, as shown in FIG. 2, a liquid to be dehydrated such as sludge is introduced from the inflow port 10 and between the filter cloths 4a and 4b. It is press-fitted into the formed filter chamber, and then, as shown in FIG. 3, pressurized air is introduced between the one filter plate 1a and the diaphragm 3 to connect the other electrode plate 2b to the other electrode plate 2b via the one electrode plate 2a. Between filter cloth 4
The sludge cake in a, 4b is squeezed by a squeezing pressure, and then a direct current voltage is applied to the electrode plates 2a, 2b to dehydrate the water content to a predetermined water content in the filter chamber by electroosmosis.
【０００５】また、上記濾室内への打ち込みは、ポンプ
圧力で加圧濾過された濾過水を排出口10から排出しつつ
行う。The injection into the filter chamber is carried out while discharging the filtered water which has been filtered under pressure by the pump pressure from the discharge port 10.
【０００６】[0006]
【発明が解決しようとする課題】しかしながら、上記の
ような電気浸透脱水機、特に濾布走行式の電気浸透脱水
機においては、ダイヤフラム３の往復動によって濾布4
a,4b 間で汚泥の圧搾が行われるため、そのダイヤフラ
ム３の復動時に元の位置までダイヤフラム３が復元すれ
ば濾布4aと電極板３との間隔が大きく、両者が接触する
おそれはないが、ダイヤフラム３が図７に示すように完
全に復元しないと、電極板2aと濾布4aとが接触するおそ
れがある。特に、濾布4aは濾室内の被処理液で湿潤して
いるため、濾布4aが電極板2aに不用意に付着するおそれ
がある。However, in the electroosmotic dehydrator as described above, particularly the filter cloth traveling type electroosmotic dehydrator, the filter cloth 4 is reciprocated by the reciprocating movement of the diaphragm 3.
Since the sludge is squeezed between a and 4b, if the diaphragm 3 is restored to its original position when the diaphragm 3 returns, the distance between the filter cloth 4a and the electrode plate 3 is large, and there is no risk of contact between them. However, if the diaphragm 3 is not completely restored as shown in FIG. 7, the electrode plate 2a and the filter cloth 4a may come into contact with each other. In particular, since the filter cloth 4a is wet with the liquid to be treated in the filter chamber, the filter cloth 4a may carelessly adhere to the electrode plate 2a.
【０００７】そして、このようにして濾布が電極板に付
着すると、濾布の巻取りが困難になるという問題点があ
った。When the filter cloth adheres to the electrode plate in this manner, there is a problem that it becomes difficult to wind the filter cloth.
【０００８】しかるに、上記のようなダイヤフラム３の
復元は、現実にはスムーズに行えない場合も多く、従っ
て、特に電気浸透脱水機においては上記のような問題点
の解決が要望されていたのである。However, in many cases, the above-mentioned restoration of the diaphragm 3 cannot be carried out smoothly in reality, and therefore, it has been demanded to solve the above-mentioned problems especially in the electroosmotic dehydrator. .
【０００９】本発明は、このような問題点を解決するた
めになされたものであり、ダイヤフラムの復動時におけ
る復元をスムーズに行わしめ、ひいては濾布の電極板と
の不用意な付着を防止することを課題とするものであ
る。The present invention has been made in order to solve such a problem, and allows the diaphragm to be smoothly restored when the diaphragm is returned, thereby preventing careless attachment of the filter cloth to the electrode plate. The task is to do so.
【００１０】[0010]
【課題を解決するための手段】本発明は、このような課
題を解決するためになされたもので、その課題を解決す
るための手段は、被脱水処理液の流入口10と濾液の排出
口９とを有する濾板1a,1b 間に濾布4a,4b が配設され、
且つ一方の濾板1aと濾布4a間にダイヤフラム３が介装さ
れ、該濾布4a,4b 内の被脱水処理液が前記ダイヤフラム
３の往復動によって前記濾布4aを介して圧搾濾過される
構成にしてなるフィルタープレスにおいて、前記流入口
10から前記濾板1a,1b 間の濾室内に被脱水処理液を流入
する流入工程と、該被脱水処理液の流入後に前記ダイヤ
フラム３を往動して前記濾布4a,4b 間の被脱水処理液を
圧搾する圧搾工程と、該被脱水処理液の圧搾後に前記流
入口10に空気や水を吹き込んで流入口10に残存する被脱
水処理液や水を除去する工程と、該被脱水処理液や水の
除去後に濾布4a,4b 間の脱水ケーキ11を除去するケーキ
除去工程とからなるフィルタープレスによる脱水方法で
あって、前記被脱水処理液や水を除去する工程後に、前
記流入口10に残存する水を除去する流路を閉塞した状態
で、該流入口10から濾室内に空気を流入することによ
り、前記ダイヤフラム３を前記一方の濾板1a側に復元さ
せることにある。The present invention has been made to solve such a problem. Means for solving the problem are an inlet 10 for a liquid to be dehydrated and a discharge outlet for a filtrate. Filter cloths 4a, 4b are arranged between the filter plates 1a, 1b having
Further, the diaphragm 3 is interposed between the one filter plate 1a and the filter cloth 4a, and the liquid to be dehydrated in the filter cloths 4a and 4b is squeezed and filtered through the filter cloth 4a by the reciprocating movement of the diaphragm 3. In the filter press configured as described above, the inflow port
An inflow step of injecting the liquid to be dehydrated into the filter chamber between the filter plates 1a and 1b from 10 and the diaphragm 3 is moved forward after the inflow of the liquid to be dehydrated to be dehydrated between the filter cloths 4a and 4b. A squeezing step of squeezing the treatment liquid, a step of blowing air or water into the inlet 10 to squeeze the water to be dehydrated or water remaining in the inlet 10 after squeezing the liquid to be dehydrated, and the treatment to be dehydrated. A method of dehydration by a filter press comprising a cake removing step of removing the dehydrated cake 11 between the filter cloths 4a and 4b after removal of liquid or water, wherein the inlet is provided after the step of removing the liquid to be dehydrated or water. It is to restore the diaphragm 3 to the one filter plate 1a side by injecting air into the filter chamber from the inflow port 10 in a state where the flow path for removing the water remaining in 10 is closed.
【００１１】[0011]
【作用】すなわち、被脱水処理液や水を除去する工程後
に、流入口10に残存する水を除去する流路を閉塞した状
態で、その流入口10から濾室内に空気を流入することに
より、ダイヤフラム３を一方の濾板1a側に復元させるた
め、そのダイヤフラム３は上記濾室内に流入された空気
によって濾板1a側に強制的に復元されることとなり、従
って、ダイヤフラム３の復動もスムーズに行われること
となるのである。In other words, after the step of removing the liquid to be dehydrated and the water, in a state where the flow path for removing the water remaining in the inlet 10 is blocked, by injecting air from the inlet 10 into the filter chamber, Since the diaphragm 3 is restored to the one filter plate 1a side, the diaphragm 3 is forcibly restored to the filter plate 1a side by the air that has flowed into the filter chamber, so that the return movement of the diaphragm 3 is smooth. It will be done in.
【００１２】[0012]
【実施例】以下、本発明の実施例について図面に従って
説明する。Embodiments of the present invention will be described below with reference to the drawings.
【００１３】先ず、一実施例としてのフィルタープレス
型電気浸透脱水機におけるダイヤフラムの復元方法につ
いて説明するに際し、その電気浸透脱水機の概略構造に
ついて説明する。First, in describing a method of restoring a diaphragm in a filter press type electroosmotic dehydrator as an example, a schematic structure of the electroosmotic dehydrator will be described.
【００１４】図１において、1a,1b は濾板で、その内側
には、電極板2a,2b が設けられている。In FIG. 1, 1a and 1b are filter plates, and electrode plates 2a and 2b are provided inside them.
【００１５】３は、一方の濾板1aと電極板2a間に介装さ
れたダイヤフラムで、背面側（濾板1a側）に圧搾空気が
導入されて、他方の濾板1b側に膨張可能に構成されてい
る。Reference numeral 3 is a diaphragm interposed between the one filter plate 1a and the electrode plate 2a. Compressed air is introduced to the back side (filter plate 1a side) so that the other filter plate 1b side can be expanded. It is configured.
【００１６】4a,4b は１対の濾布で、濾布吊り棒５に吊
り下げられている。A pair of filter cloths 4a and 4b are suspended from a filter cloth suspension rod 5.
【００１７】６は前記濾布吊り棒５を介して濾布4a,4b
を巻き取るための巻取りドラムで、回転軸７に回転自在
に取付けられている。6 is a filter cloth 4a, 4b through the filter cloth suspension rod 5
It is a winding drum for winding up and is rotatably attached to the rotary shaft 7.
【００１８】８，…は、濾布を下方に引っ張って巻き取
るための巻取りローラを示す。Denoted at 8 are winding rollers for pulling the filter cloth downward and winding it.
【００１９】９は、濾板1a,1b 間に形成される濾室内の
濾液を外部に排出するための排出口、10は該濾室内に被
処理液としての余剰汚泥を流入するための流入口で、そ
れぞれ両濾板1a,1b の上下に形成されている。Reference numeral 9 is an outlet for discharging the filtrate in the filter chamber formed between the filter plates 1a and 1b to the outside, and 10 is an inlet for introducing excess sludge as a liquid to be treated into the filter chamber. Are formed above and below the filter plates 1a and 1b, respectively.
【００２０】次に、電気浸透脱水機を作動させる場合に
は、先ず流入口10から余剰汚泥を濾板1a，1b間に形成さ
れる濾室内に流入して、該濾室内に図２に示すように汚
泥を打ち込む。このとき、図４に示すＶ−１，Ｖ−３，
Ｖ−８のバルブを開いた状態とする。Next, when operating the electroosmotic dehydrator, first, excess sludge is caused to flow from the inflow port 10 into the filter chamber formed between the filter plates 1a and 1b, as shown in FIG. To drive the sludge. At this time, V-1, V-3, and
Keep the V-8 valve open.
【００２１】次に、図３に示すように一方の濾板1aとダ
イヤフラム３との間に圧力空気を導入して、一方の電極
板2aと他方の電極板2bとの間の濾布4a,4b 内の汚泥ケー
キ11を圧搾圧力により挟圧する。このとき、図４に示す
Ｖ−１，Ｖ−８のバルブを閉じるとともに、Ｖ−２のバ
ルブを新たに開いた状態とする。Next, as shown in FIG. 3, pressurized air is introduced between the one filter plate 1a and the diaphragm 3 to filter the filter cloth 4a between the one electrode plate 2a and the other electrode plate 2b. The sludge cake 11 in 4b is pinched by pressing pressure. At this time, the valves V-1 and V-8 shown in FIG. 4 are closed, and the valve V-2 is newly opened.
【００２２】さらに、上記のように圧搾した後、上記電
極板2a,2b に直流電圧を加えると、電気浸透作用によ
り、濾室内で新たな脱水作用が開始されることとなる。
そして所定の含水率まで脱水されると、その脱水工程が
終了する。Furthermore, when a DC voltage is applied to the electrode plates 2a, 2b after squeezing as described above, a new dehydration action is started in the filter chamber due to the electroosmotic action.
Then, when the water content is dehydrated to a predetermined water content, the dehydration process ends.
【００２３】次に、上記のような電気浸透による脱水工
程が終了した後、排出口９や流入口10をエアーの吹きつ
けによって洗浄する、いわゆるエアーブローの作業を行
う。Next, after the dehydration step by electroosmosis as described above is completed, a so-called air blow operation is performed to clean the discharge port 9 and the inflow port 10 by blowing air.
【００２４】そのエアーブローの作業においては、先
ず、Ｖ−２のバルブを閉じるとともにＶ−４，Ｖ−６の
バルブを新たに開き、その状態で流入口10内にエアーを
流入する。In the air blowing operation, first, the V-2 valve is closed, the V-4 and V-6 valves are newly opened, and air is introduced into the inflow port 10 in this state.
【００２５】これにより、該流入口10内に残存している
汚泥がエアーによって除去され、汚泥貯留槽（図示せ
ず）へ排出される。As a result, the sludge remaining in the inflow port 10 is removed by air and discharged to the sludge storage tank (not shown).
【００２６】次に、Ｖ−４，Ｖ−６のバルブを閉じると
ともにＶ−５，Ｖ−７のバルブを新たに開き、その状態
で前記流入口10内に水を流す。Next, the valves V-4 and V-6 are closed, the valves V-5 and V-7 are newly opened, and water is flowed into the inflow port 10 in this state.
【００２７】これによって、上記流入口10内が洗浄され
ることとなり、洗浄後の液は、濾液槽（図示せず）側へ
送られる。As a result, the inside of the inflow port 10 is cleaned, and the liquid after cleaning is sent to the filtrate tank (not shown) side.
【００２８】次に、Ｖ−５のバルブを閉じるとともに、
Ｖ−４のバルブを再度開き、その状態で流入口10内に再
度エアーを流入する。Next, while closing the V-5 valve,
The V-4 valve is opened again, and in that state, the air is again flown into the inflow port 10.
【００２９】これによって、前記洗浄工程において流入
口10内に残存する水がエアーで吹き飛ばされ、濾液槽側
へ排出される。As a result, the water remaining in the inflow port 10 in the cleaning step is blown off by air and discharged to the filtrate tank side.
【００３０】さらに、Ｖ−４のバルブを開いた状態のま
ま、Ｖ−３，Ｖ−７のバルブを閉じ、さらに新たにＶ−
８のバルブを開く。Further, with the V-4 valve still open, the V-3 and V-7 valves are closed, and a new V-
Open valve 8.
【００３１】この状態でエアーが流入口10内に流入され
ると、Ｖ−３，Ｖ−７のバルブが閉じられているため
に、濾室内の圧力が高くなり、その結果、ダイヤフラム
３の復動時にそのダイヤフラム３は図５に示すように確
実に濾板1a側に復元することとなる。When air flows into the inflow port 10 in this state, the pressure in the filter chamber increases because the valves V-3 and V-7 are closed, and as a result, the diaphragm 3 is restored. When moving, the diaphragm 3 is surely restored to the filter plate 1a side as shown in FIG.
【００３２】従って、ダイヤフラム３の前面側に取り付
けられた電極板2aが濾布4aに不用意に付着することもな
いのである。Therefore, the electrode plate 2a attached to the front side of the diaphragm 3 does not inadvertently adhere to the filter cloth 4a.
【００３３】次に、Ｖ−３のバルブを開くとともにＶ−
４のバルブを閉じ、その状態で濾液槽に連通する流路の
水抜き作業を行う。Next, the valve of V-3 is opened and V-
The valve of No. 4 is closed, and in that state, drainage work of the flow path communicating with the filtrate tank is performed.
【００３４】その後、図６のように濾板1a,1b 間を開
き、濾布4a,4b を下降させることによって、汚泥ケーキ
11が除去されることとなるのである。Thereafter, as shown in FIG. 6, the space between the filter plates 1a and 1b is opened, and the filter cloths 4a and 4b are lowered to make the sludge cake.
11 will be removed.
【００３５】尚、上記実施例では、濾布走行式の電気浸
透脱水機を用いる場合について説明したが、これに限ら
ず濾布固定式の電気浸透脱水機に本発明を利用すること
も可能である。In the above embodiments, the case of using the filter cloth traveling type electroosmotic dehydrator has been described, but the present invention is not limited to this and the present invention can be applied to a filter cloth fixed type electroosmotic dehydrator. is there.
【００３６】また、本発明は、ダイヤフラム３が好適に
復元しないことによる電極板の濾布への付着を防止する
観点から、電気浸透脱水機に適用することを主眼とする
ものであるが、電気浸透脱水機以外のフィルタープレス
に本発明を適用することも可能である。The present invention is mainly applied to an electroosmotic dehydrator from the viewpoint of preventing the electrode plate from adhering to the filter cloth due to the diaphragm 3 not being restored properly. The present invention can be applied to a filter press other than the osmosis dehydrator.
【００３７】さらに、流入口10等に連通する各バルブを
開閉する手順も、上記実施例に限定されるものではな
く、各工程の必要に応じて開閉されればよい。Furthermore, the procedure for opening and closing each valve communicating with the inflow port 10 and the like is not limited to the above embodiment, and may be opened or closed as necessary for each step.
【００３８】さらに、上記実施例では、ダイヤフラム３
を復元させる際に、Ｖ−３，Ｖ−７のバルブを閉じた状
態で流入口10から濾室内に空気を流入させたが、バルブ
を閉塞する状態はこれに限定されるものではなく、要
は、流入口10から該流入口10に残存する水を除去する流
路を閉塞した状態で、その流入口10から濾室内に空気が
流入されればよいのである。Further, in the above embodiment, the diaphragm 3
When the valve was restored, air was flown into the filter chamber from the inlet 10 with the valves V-3 and V-7 closed, but the state of closing the valve is not limited to this. The air may flow from the inflow port 10 into the filter chamber in a state where the flow path for removing the water remaining in the inflow port 10 is closed.
【００３９】[0039]
【発明の効果】叙上のように、本発明は、フィルタープ
レスの流入口から濾室内に被脱水処理液を流入する工程
と、ダイヤフラムを往動して前記濾布間の被脱水処理液
を圧搾する工程と、流入口に空気や水を吹き込んで流入
口に残存する被脱水処理液や水を除去する工程と、脱水
ケーキを除去するケーキ除去工程とからなるフィルター
プレスによる脱水方法において、被脱水処理液や水を除
去する工程後に、流入口に残存する水を除去する流路を
閉塞した状態で、その流入口を介して濾室内に空気を流
入することにより、ダイヤフラムを一方の濾板側に復元
させる方法であるため、ダイヤフラムは濾室内に圧入さ
れた空気によって濾板側に強制的に復元されることとな
り、従って、従来の電気浸透脱水機のようにダイヤフラ
ムが一方の濾布に不用意に付着するおそれがないという
効果がある。As described above, according to the present invention, the step of flowing the liquid to be dehydrated into the filter chamber through the inlet of the filter press and the forward movement of the diaphragm to remove the liquid to be dehydrated between the filter cloths. In a dewatering method using a filter press, which comprises a step of squeezing, a step of blowing air or water into the inlet to remove the water to be dehydrated and water remaining at the inlet, and a cake removing step of removing the dehydrated cake, After the process of removing the dehydration treatment liquid and water, with the flow path for removing the water remaining at the inflow port closed, air is introduced into the filter chamber through the inflow port, so that the diaphragm is attached to one of the filter plates. Since it is a method of restoring to the filter side, the diaphragm is forcedly restored to the filter plate side by the air that is press-fitted into the filter chamber, so that the diaphragm is attached to one filter cloth like the conventional electroosmotic dehydrator. There is an effect that there is no possibility of adhering to prepare.
【００４０】そして、このように濾布の電極板への不用
意な付着が防止される結果、濾布の巻取りが困難になる
という問題点も解消されるという利点がある。As a result of inadvertent attachment of the filter cloth to the electrode plate in this way, there is an advantage that the problem that winding of the filter cloth becomes difficult is solved.
【図１】フィルタープレスの概略断面図。FIG. 1 is a schematic sectional view of a filter press.
【図２】汚泥圧入時の概略断面図。FIG. 2 is a schematic sectional view when sludge is press-fitted.
【図３】ダイヤフラム作動時の概略断面図。FIG. 3 is a schematic cross-sectional view when the diaphragm is operating.
【図４】各バルブと流入口等の連通状態を示す概略斜視
図。FIG. 4 is a schematic perspective view showing a communication state of each valve and an inlet.
【図５】ダイヤフラム復動時の概略断面図。FIG. 5 is a schematic cross-sectional view when the diaphragm is returning.
【図６】脱水ケーキ脱離時の概略断面図。FIG. 6 is a schematic cross-sectional view during desorption of the dehydrated cake.
【図７】従来のダイヤフラム復動時の状態を示す概略断
面図。FIG. 7 is a schematic cross-sectional view showing a state when the conventional diaphragm is moved back.
1a,1b …濾板 ３…ダイヤフラム 4a,4b …濾布 ９…排出口 10…流入口 1a, 1b ... Filter plate 3 ... Diaphragm 4a, 4b ... Filter cloth 9 ... Discharge port 10 ... Inlet port
Claims (2)
口(9) とを有する濾板(1a),(1b) 間に濾布(4a),(4b) が
配設され、且つ一方の濾板(1a)と濾布(4a)間にダイヤフ
ラム(3) が介装され、該濾布(4a),(4b) 内の被脱水処理
液が前記ダイヤフラム(3) の往復動によって前記濾布(4
a)を介して圧搾濾過される構成にしてなるフィルタープ
レスにおいて、前記流入口(10)から前記濾板(1a),(1b)
間の濾室内に被脱水処理液を流入する流入工程と、該被
脱水処理液の流入後に前記ダイヤフラム(3) を往動して
前記濾布(4a),(4b) 間の被脱水処理液を圧搾する圧搾工
程と、該被脱水処理液の圧搾後に前記流入口(10)に空気
や水を吹き込んで流入口(10)に残存する被脱水処理液や
水を除去する工程と、該被脱水処理液や水の除去後に濾
布(4a),(4b) 間の脱水ケーキ(11)を除去するケーキ除去
工程とからなるフィルタープレスによる脱水方法であっ
て、前記被脱水処理液や水を除去する工程後に、前記流
入口(10)に残存する水を除去する流路を閉塞した状態
で、該流入口(10)から濾室内に空気を流入することによ
り、前記ダイヤフラム(3) を前記一方の濾板(1a)側に復
元させることを特徴とするフィルタープレスによる脱水
方法。1. Filter cloths (4a), (4b) are arranged between filter plates (1a), (1b) having an inlet (10) for a liquid to be dehydrated and an outlet (9) for a filtrate. , And the diaphragm (3) is interposed between the one filter plate (1a) and the filter cloth (4a), and the liquid to be dehydrated in the filter cloths (4a) and (4b) is reciprocated by the diaphragm (3). The filter cloth (4
In a filter press configured to be compressed and filtered via a), the filter plate (1a), (1b) from the inlet (10)
An inflow step of flowing the liquid to be dehydrated into the filter chamber between, and the liquid to be dehydrated between the filter cloths (4a) and (4b) by moving the diaphragm (3) forward after the liquid to be dehydrated flows. And a step of blowing air or water into the inlet (10) after pressing the liquid to be dehydrated to remove the liquid or water to be dehydrated remaining in the inlet (10), A method of dehydration by a filter press comprising a cake removing step of removing the dehydrated cake (11) between the filter cloths (4a) and (4b) after removal of the dehydrated solution or water, wherein the dehydrated solution or water is After the removing step, with the flow path for removing the water remaining at the inflow port (10) closed, air is introduced from the inflow port (10) into the filter chamber, so that the diaphragm (3) is removed. A dehydration method using a filter press, which is characterized in that one filter plate (1a) side is restored.
口(9) とを有する濾板(1a),(1b) 間に濾布(4a),(4b) が
配設され、且つ一方の濾板(1a)と濾布(4a)間にダイヤフ
ラム(3) が介装され、該濾布(4a),(4b) 内の被脱水処理
液が前記ダイヤフラム(3) の往復動によって前記濾布(4
a),(4b) を介して圧搾濾過される構成にしてなるフィル
タープレスにおいて、前記流入口(10)から前記濾板(1
a),(1b) 間の濾室内に被脱水処理液を流入する流入工程
と、該被脱水処理液の流入後に前記ダイヤフラム(3) を
往動して前記濾布(4a),(4b) 間の被脱水処理液を圧搾す
る圧搾工程と、該被脱水処理液の圧搾後に前記流入口(1
0)に空気を吹き込んで流入口(10)に残存する被脱水処理
液を除去する第１ブロー工程と、該第１ブロー工程後に
前記流入口(10)に水を流入して該流入口(10)を洗浄する
工程と、該流入口(10)を洗浄した後、該流入口(10)に空
気を吹き込んで該流入口(10)に残存する水を除去する第
２ブロー工程と、該第２ブロー工程後に濾布(4a),(4b)
間の脱水ケーキ(11)を除去するケーキ除去工程とからな
るフィルタープレスによる脱水方法であって、前記第２
ブロー工程において空気を吹き込んだ後に、前記流入口
(10)に残存する水を除去する流路を閉塞した状態で、該
流入口(10)から濾室内に空気を流入することにより、前
記ダイヤフラム(3) を前記一方の濾板(1a)側に復元させ
ることを特徴とするフィルタープレスによる脱水方法。2. Filter cloths (4a), (4b) are arranged between filter plates (1a), (1b) having an inlet (10) for the liquid to be dehydrated and an outlet (9) for the filtrate. , And the diaphragm (3) is interposed between the one filter plate (1a) and the filter cloth (4a), and the liquid to be dehydrated in the filter cloths (4a) and (4b) is reciprocated by the diaphragm (3). The filter cloth (4
In a filter press configured to be squeezed and filtered through a) and (4b), the filter plate (1
a), an inflow step of flowing the liquid to be dehydrated into the filter chamber between (1b) and the filter cloth (4a), (4b) by moving the diaphragm (3) forward after the liquid to be dehydrated flows. Between the squeezing step of squeezing the liquid to be dehydrated and the inlet (1
(1) a first blowing step of blowing air into the inlet (10) to remove the liquid to be dehydrated remaining in the inlet (10), and water flowing into the inlet (10) after the first blowing step so that the inlet (10) 10) a step of washing, and a second blowing step of washing the inlet (10) and then blowing air into the inlet (10) to remove water remaining in the inlet (10), Filter cloth (4a), (4b) after the second blowing step
A dehydration method using a filter press, which comprises a cake removing step for removing the dehydrated cake (11) between
After blowing air in the blowing process,
With the flow path for removing the water remaining in (10) blocked, air is introduced into the filter chamber from the inlet (10) to move the diaphragm (3) to the one filter plate (1a) side. A dehydration method by a filter press, which is characterized in that
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5186403A JP2688876B2 (en) | 1993-07-28 | 1993-07-28 | Dehydration method with filter press |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5186403A JP2688876B2 (en) | 1993-07-28 | 1993-07-28 | Dehydration method with filter press |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0739711A JPH0739711A (en) | 1995-02-10 |
| JP2688876B2 true JP2688876B2 (en) | 1997-12-10 |
Family
ID=16187802
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5186403A Expired - Lifetime JP2688876B2 (en) | 1993-07-28 | 1993-07-28 | Dehydration method with filter press |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2688876B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR3042186B1 (en) * | 2015-10-12 | 2021-12-10 | Veolia Water Solutions & Tech | SLUDGE DEHYDRATION DEVICE |
| CN106746466B (en) * | 2017-01-19 | 2019-05-31 | 浙江工业大学 | A kind of system of electrolysis-electrodialysis-air pressure filters pressing Combined Treatment sludge dewatering |
| CN115180763A (en) * | 2022-08-04 | 2022-10-14 | 山东雅森环境科技有限公司 | Cleaning, purifying and sludge reducing process and system for oil field sewage sludge pool |
-
1993
- 1993-07-28 JP JP5186403A patent/JP2688876B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0739711A (en) | 1995-02-10 |
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