[go: up one dir, main page]

JPH0671114A - Concentration filtration device - Google Patents

Concentration filtration device

Info

Publication number
JPH0671114A
JPH0671114A JP4253940A JP25394092A JPH0671114A JP H0671114 A JPH0671114 A JP H0671114A JP 4253940 A JP4253940 A JP 4253940A JP 25394092 A JP25394092 A JP 25394092A JP H0671114 A JPH0671114 A JP H0671114A
Authority
JP
Japan
Prior art keywords
filtration
filter
cylinder
electrode
filter cylinder
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
Application number
JP4253940A
Other languages
Japanese (ja)
Inventor
Toshihito Kondo
敏仁 近藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Fujita Corp
Original Assignee
Fujita Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Fujita Corp filed Critical Fujita Corp
Priority to JP4253940A priority Critical patent/JPH0671114A/en
Publication of JPH0671114A publication Critical patent/JPH0671114A/en
Pending legal-status Critical Current

Links

Landscapes

  • Treatment Of Sludge (AREA)
  • Filtration Of Liquid (AREA)

Abstract

(57)【要約】 【目的】 逆洗による濾布の目詰まりの解消及び電圧印
加による懸濁粒子の沈降促進を図り、同一水槽で濃縮及
び濾過を効率良く行うことを目的とする。 【構成】 水槽1内に、一端を閉じ他端を開口部とした
筒状の濾過筒2を設け、濾過筒2の表面を濾布3で覆っ
た。さらに、濾過筒2の開口部を設けた水槽1の側壁に
連通管4を設け、連通管4に切り替え弁5を介して圧送
管6及び排出管7を接続させた。圧送管6は加圧ポンプ
6aに接続され水等を濾過筒2内へ逆流できるようにな
っている。また、濾過筒2を電極として構成し、さらに
濾過筒2の下方に電極9を配置し、これらを電源10に
接続して直流電圧を印加できるようにした。
(57) [Summary] [Objective] The purpose is to eliminate clogging of the filter cloth by backwashing and promote sedimentation of suspended particles by applying a voltage, and to efficiently perform concentration and filtration in the same water tank. [Structure] A cylindrical filter tube 2 having one end closed and the other end opened is provided in a water tank 1, and a surface of the filter tube 2 is covered with a filter cloth 3. Further, a communication pipe 4 was provided on the side wall of the water tank 1 having the opening of the filtration cylinder 2, and the communication pipe 4 was connected to the pressure feed pipe 6 and the discharge pipe 7 via the switching valve 5. The pressure feed pipe 6 is connected to a pressure pump 6 a so that water or the like can flow back into the filter cylinder 2. Further, the filtration cylinder 2 was constructed as an electrode, and the electrode 9 was arranged below the filtration cylinder 2, and these were connected to a power source 10 so that a DC voltage could be applied.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明は泥水または泥状物質から
水分を除く濃縮濾過装置に関し、特に濾布の目詰まりの
解消及び電圧印加による懸濁粒子の沈降促進により、同
一濾過槽内での濃縮及び濾過の効率向上を目指す。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrating filtration apparatus for removing water from muddy water or mud-like substances, and in particular, by eliminating clogging of a filter cloth and promoting sedimentation of suspended particles by applying a voltage, Aim to improve the efficiency of concentration and filtration.

【0002】[0002]

【従来の技術】従来泥水や泥状物質から水分を除くとき
は、濾過槽において濾過槽底面の格子上に敷いた濾布を
介して濾過するか、または濃縮槽において懸濁粒子の沈
降を待ってその上澄み液を除くか、いずれかの方法を用
いていた。
2. Description of the Related Art Conventionally, when water is removed from muddy water or mud-like substances, it is filtered in a filter tank through a filter cloth laid on the lattice on the bottom surface of the filter tank, or suspended particles are allowed to settle in the tank. The supernatant was removed or either method was used.

【0003】[0003]

【発明が解決しようとする課題】従来の濾過による方法
では、濾過中の濾布の目詰まりによって発生する濾過機
能の低下を避けることができず、効率の面で甚だ問題が
あった。また、濃縮槽で懸濁粒子の自然沈降を待つ重力
沈降法では、懸濁粒子が負に帯電しているため懸濁粒子
の溶媒和が起き易く、沈降速度が著しく遅くなり、濃縮
に時間がかかりすぎていた。さらに、従来は上記濾過及
び濃縮は、それぞれ専用の濾過槽及び濃縮槽を用いて別
々に行われ、同一濾過槽を用いて濾過及び濃縮の両方を
効率良く行う方法がなかった。そこで、本発明は、逆洗
による濾布の目詰まりの解消及び直流電圧の印加による
懸濁粒子の沈降促進により、同一濾過槽内で濾過及び濃
縮を効率良く行うことを目的とした。
The conventional method by filtration cannot avoid the deterioration of the filtration function caused by the clogging of the filter cloth during filtration, and has a serious problem in terms of efficiency. Further, in the gravity settling method of waiting for the spontaneous settling of suspended particles in the concentration tank, the suspended particles are negatively charged, so that the solvation of the suspended particles easily occurs, the sedimentation speed becomes significantly slow, and the time required for concentration is increased. It took too much. Furthermore, conventionally, the above-mentioned filtration and concentration were separately performed using a dedicated filtration tank and a concentration tank, respectively, and there was no method for efficiently performing both filtration and concentration using the same filtration tank. Therefore, the present invention has an object to efficiently perform filtration and concentration in the same filtration tank by eliminating clogging of a filter cloth by backwashing and promoting sedimentation of suspended particles by applying a DC voltage.

【0004】[0004]

【課題を解決するための手段】本発明は上記目的を達成
するために、泥水または泥状物質から水分を除く濃縮濾
過装置であって、格子状の材料を用いて形成した濾過筒
を、その軸方向両端を閉じた状態にするとともに、軸線
方向が水平となるようにして濾過槽内に配置し、さらに
濾過筒の表面を濾布で覆い、濾過筒内を切り替え弁を介
して加圧手段に連通した。また、濾過筒を電極として構
成し、濾過筒より下方に濾過槽底面と平行に電極を配置
し、それぞれの電極を電源に接続して両電極間に電圧を
印加できるように構成した。
In order to achieve the above-mentioned object, the present invention is a concentrating filtration apparatus for removing water from mud or mud-like substances, which comprises a filtration cylinder formed by using a lattice-shaped material. The both ends in the axial direction are closed, and the axial direction is horizontal and the filter is placed in the filtration tank. The surface of the filtration cylinder is covered with a filter cloth, and the inside of the filtration cylinder is pressurized through a switching valve. Communicated with. In addition, the filter cylinder was configured as an electrode, the electrode was arranged below the filter cylinder in parallel with the bottom surface of the filter tank, and each electrode was connected to a power source so that a voltage could be applied between both electrodes.

【0005】[0005]

【作用】濾過槽内の泥水などは、筒状に形成された濾過
筒の格子表面を覆っている濾布により自然濾過され、濾
液は濾過筒の筒内に入る。濾過筒内の濾液は、切り替え
弁を有した連通管から濾過槽外へ排出される。さらに、
一度濾過筒内に入った濾液は、濾過筒の格子表面が濾布
により全面覆われており、また濾過筒の端部が閉じられ
ているので、濾過筒内と濾過筒外とでの濃度差により濾
液が濾過筒外へ逆浸透する心配は殆どない。また、濾過
筒の格子表面の濾布が、濾過の最中に懸濁粒子などで目
詰まりを起こし濾過機能が低下したときは、適宜切り替
え弁の切り替えにより濾過筒内を加圧ポンプに連通さ
せ、水または空気などを濾過筒内へ逆流させる。逆流さ
せた空気または水の圧力により、濾過筒の格子表面上の
濾布が強制的に浮かされ、濾布の織り目が拡張されたり
などして逆洗され、濾布の目を塞いでいる懸濁粒子が剥
がされ、濾布の濾過機能が回復される。一方、濾過筒の
下方には、濾過槽の底面と平行に電極が配置され、これ
を電源の陽極側に、濾過筒を電源の陰極側に接続して、
直流電圧を印加しながら懸濁粒子の沈降促進ができるよ
うになっている。すなわち、濾過筒で濾過を行いなが
ら、一方では直流電圧をかけて懸濁粒子の沈降を促進
し、濃縮及び濾過を同一槽内で効率よくできるようにな
っている。また、濾過筒が陰極となっているので、濾布
表面の負に帯電した懸濁粒子に斥力が働き、目詰まりし
にくくなっている。
The muddy water in the filter tank is naturally filtered by the filter cloth covering the lattice surface of the filter cylinder formed into a cylindrical shape, and the filtrate enters the cylinder of the filter cylinder. The filtrate in the filtration cylinder is discharged to the outside of the filtration tank through a communication pipe having a switching valve. further,
Once the filtrate enters the filter cylinder, the lattice surface of the filter cylinder is entirely covered with a filter cloth and the end of the filter cylinder is closed, so the difference in concentration between the inside and outside of the filter cylinder Therefore, there is almost no fear that the filtrate will reversely osmose outside the filter cylinder. In addition, when the filter cloth on the lattice surface of the filter cylinder becomes clogged with suspended particles during filtration and the filtration function deteriorates, the inside of the filter cylinder is communicated with the pressure pump by switching the switching valve appropriately. , Water or air is made to flow back into the filter cylinder. The pressure of the air or water that has been caused to flow back forces the filter cloth on the surface of the filter cylinder to float, and the cloth of the filter cloth is expanded or backwashed to close the filter cloth. The particles are peeled off and the filtering function of the filter cloth is restored. On the other hand, below the filter cylinder, an electrode is arranged in parallel with the bottom surface of the filtration tank, and this is connected to the anode side of the power source and the filter cylinder to the cathode side of the power source.
The sedimentation of suspended particles can be promoted while applying a DC voltage. That is, while filtering with a filter cylinder, DC voltage is applied on the one hand to promote the sedimentation of suspended particles, so that concentration and filtration can be efficiently performed in the same tank. Further, since the filter cylinder serves as a cathode, repulsive force acts on the negatively charged suspended particles on the surface of the filter cloth, and clogging is less likely to occur.

【0006】[0006]

【実施例】本実施例を、図1により説明する。本発明に
係る濃縮濾過装置では、濾過槽1内の濾過筒2により濾
過を行い、さらに、濾過筒2を陰極とし、その下方に配
置された電極9を陽極として、その間に直流電圧をかけ
ながら、懸濁粒子の沈降を促進し濃縮するようになって
いる。濾過槽1の上方に濾過筒2がその軸線方向に水平
となるように配置され、その濾過筒2は格子状の材料に
より形成され、その表面は濾布3で覆われている。ま
た、濾過筒2は電極として使用できるように導電性の物
質で、断面が波型に形成された平面状の格子材料によ
り、一端を閉じ他の一端をそのまま開口部とした筒状に
つくられている。さらに、濾過筒2は濾過槽1の底面と
ほぼ同じ大きさで、極力濾過面積を大きくするように設
定されており、濾過槽1の側面に濾過筒2の開口部を密
着させて水平方向に突設するように取り付けられてい
る。濾過筒2の長さは、閉じた端壁2aが濾過槽1の対
面に届かない程度に設定されている。
EXAMPLE This example will be described with reference to FIG. In the concentrating filtration device according to the present invention, filtration is performed by the filtration cylinder 2 in the filtration tank 1, the filtration cylinder 2 is used as a cathode, and the electrode 9 arranged below the filtration cylinder 2 is used as an anode, while applying a DC voltage between them. , Is designed to accelerate the sedimentation of suspended particles and to concentrate them. A filter cylinder 2 is arranged above the filter tank 1 so as to be horizontal in the axial direction thereof. The filter cylinder 2 is made of a lattice-shaped material, and its surface is covered with a filter cloth 3. The filter tube 2 is made of a conductive material so that it can be used as an electrode. The filter tube 2 is made of a flat lattice material having a corrugated cross section and is formed into a tube shape with one end closed and the other end opened as it is. ing. Further, the filtration cylinder 2 is approximately the same size as the bottom surface of the filtration tank 1 and is set so as to increase the filtration area as much as possible, and the opening of the filtration cylinder 2 is closely attached to the side surface of the filtration tank 1 in the horizontal direction. It is attached so as to project. The length of the filtration cylinder 2 is set so that the closed end wall 2a does not reach the facing surface of the filtration tank 1.

【0007】さらに、筒状に形成された濾過筒2の表面
の濾布3は、後述する逆洗による流入圧により濾布3が
濾過筒2の表面から外れないように、濾布3の端部は濾
過筒2に固定されている。濾布3は全面に濾過用の細か
い織り目を有した構造になっている。従って、濾過槽1
内の被濾過液は濾過筒2の上面の濾布3の細かい織り目
によって、被濾過液中の懸濁粒子などの固体分と水とが
分離され、分離された水は濾布3の目を通って濾過筒2
の筒内に自然濾過される。また、濾布3の織り目により
分離された固形分は、通常ケーキと呼ばれ、ある程度溜
ってから濾布3上より除去される。
Furthermore, the filter cloth 3 on the surface of the filter cylinder 2 formed in a tubular shape has an end of the filter cloth 3 so that the filter cloth 3 does not come off from the surface of the filter cylinder 2 due to an inflow pressure due to backwash described later. The part is fixed to the filter cylinder 2. The filter cloth 3 has a structure having a fine weave for filtering on the entire surface. Therefore, the filter tank 1
The liquid to be filtered inside is separated from the solid content such as suspended particles in the liquid to be filtered and the water by the fine texture of the filter cloth 3 on the upper surface of the filter cylinder 2, and the separated water is filtered by the eyes of the filter cloth 3. Through the filter tube 2
It is naturally filtered in the cylinder. Further, the solid content separated by the texture of the filter cloth 3 is usually called a cake, and after being accumulated to some extent, it is removed from the filter cloth 3.

【0008】また、濾過筒2の開口部が取り付けられた
側壁には、濾液を外部に排出できるように、側壁を貫通
した連通管4が設けられている。連通管4は濾過槽の外
部で切り替え弁5を介して圧送管6と排出管7に連結さ
れている。濾液を排出する場合は、切り替え弁5で連通
管4を排出管7に連通させて排出させる。なお、濾過筒
2は軸方向両端を端壁で閉じ、濾過筒2の適所へ連通管
5を連通させてもよい。また、圧送管6は加圧ポンプ6
aに接続されており、水または空気等を、濾過筒2内へ
切り替え弁5を介して圧送することができるようになっ
ている。圧送された水または空気は、連通管4を通って
濾過筒2内に入り、濾過筒2の筒状の周囲全面から勢い
よく逆流する。このため、濾過筒2上の濾布3は、濾過
筒2への取り付け部を除いて逆流圧によって浮かされ、
濾布3の織り目に詰まった固体分が織り目から逆洗され
て、剥がされるようになっている。
Further, a communication pipe 4 penetrating the side wall is provided on the side wall of the filter tube 2 to which the opening is attached so that the filtrate can be discharged to the outside. The communication pipe 4 is connected to the pressure feed pipe 6 and the discharge pipe 7 via a switching valve 5 outside the filtration tank. When discharging the filtrate, the switching valve 5 causes the communication pipe 4 to communicate with the discharge pipe 7 and discharges it. The filtration tube 2 may be closed at both ends in the axial direction with end walls, and the communication pipe 5 may be connected to an appropriate place of the filtration tube 2. Further, the pressure feeding pipe 6 is the pressure pump 6
It is connected to a, and water, air or the like can be pressure-fed into the filter cylinder 2 via the switching valve 5. The water or air that has been pressure-fed enters the filtration cylinder 2 through the communication pipe 4, and vigorously flows backward from the entire cylindrical surrounding surface of the filtration cylinder 2. Therefore, the filter cloth 3 on the filter cylinder 2 is floated by the reverse flow pressure except for the attachment portion to the filter cylinder 2,
The solid component clogged in the texture of the filter cloth 3 is backwashed from the texture and peeled off.

【0009】一方、濾過筒2の下方には濾過槽1の底面
より少し上方に、底面とほぼ同じ大きさを有した電極9
が設けられており、電極9は底面及び濾過筒2の下面と
平行になるように設定されている。電極9の電極面は、
液体がスムーズに透過できるように透過用の目を多数設
けた、断面波形の導電性物質で格子状につくられてい
る。さらに、濾過槽1外に直流電源10を設け、濾過筒
2を電源10の陰極に接続し、濾過筒2の下方に設けら
れた電極9を電源10の陽極に接続できるようになって
いる。また、濾過槽1の底面近くの側壁には、開閉弁8
aを有した排出管8が取り付けられている。すなわち、
被濾過液を濾過筒2で濾過しながら濾液を連通管4で外
部に排出し、同時に濾過筒2の陰極と、濾過筒2の下方
に配置した電極9の陽極との間に直流電圧を印加し、被
濾過液中の懸濁粒子の沈降を促進して、濾過槽1の下方
の懸濁粒子を多く含んだ濃縮液を排出管8で外部に排出
し、同一濾過槽1で濾過と濃縮を効率良く行うことがで
きるようになっている。
On the other hand, below the filter cylinder 2, a little above the bottom surface of the filter tank 1, and an electrode 9 having a size substantially the same as the bottom surface.
Is provided, and the electrode 9 is set to be parallel to the bottom surface and the bottom surface of the filtration cylinder 2. The electrode surface of the electrode 9 is
It is made of a conductive material having a corrugated cross section and formed in a grid pattern, which is provided with a large number of permeation eyes so that liquid can smoothly permeate. Further, a DC power supply 10 is provided outside the filtration tank 1, the filtration cylinder 2 can be connected to the cathode of the power supply 10, and the electrode 9 provided below the filtration cylinder 2 can be connected to the anode of the power supply 10. On the side wall near the bottom of the filtration tank 1, the on-off valve 8
A discharge pipe 8 having a is attached. That is,
The filtrate is discharged to the outside through the communication tube 4 while filtering the liquid to be filtered through the filter tube 2, and at the same time, a DC voltage is applied between the cathode of the filter tube 2 and the anode of the electrode 9 arranged below the filter tube 2. Then, sedimentation of suspended particles in the liquid to be filtered is promoted, and the concentrated liquid containing a large amount of suspended particles in the lower part of the filtration tank 1 is discharged to the outside through the discharge pipe 8 and filtered and concentrated in the same filtration tank 1. Can be done efficiently.

【0010】また、実施例とは異なり、圧送管6及び排
出管7を別々に直接濾過槽1の側面に濾過筒2内へ連通
できるように取り付けてもよい。また、連通管4に接続
した複数の噴出孔を有するノズルを濾過筒2内に設け、
逆洗水が濾過筒2内から表面の濾布3全体に均等に当た
るようにしてもよい。また、濾過槽1の容量に応じて複
数の濾過筒2を、濾過槽1内に互いに平行になるよう多
段配置して、濾過及び濃縮の効率をさらに向上してもよ
い。また、本実施例では濾過筒2を陰極とし、これと平
行対置した電極9を陽極としたが、懸濁粒子が正に帯電
している場合は、濾過筒2を陽極とし、電極9を陰極と
してもよい。
Further, unlike the embodiment, the pressure feed pipe 6 and the discharge pipe 7 may be separately attached directly to the side surface of the filtration tank 1 so that they can communicate with the inside of the filtration cylinder 2. Further, a nozzle having a plurality of ejection holes connected to the communication pipe 4 is provided in the filtration cylinder 2,
The backwash water may be uniformly applied from the inside of the filter cylinder 2 to the entire filter cloth 3 on the surface. Further, a plurality of filtration cylinders 2 may be arranged in parallel in the filtration tank 1 so as to be parallel to each other in accordance with the capacity of the filtration tank 1 to further improve the efficiency of filtration and concentration. Further, in this embodiment, the filter cylinder 2 was used as a cathode and the electrode 9 placed in parallel with this was used as an anode. However, when the suspended particles are positively charged, the filter cylinder 2 is used as an anode and the electrode 9 is used as a cathode. May be

【0011】[0011]

【発明の効果】本発明により、濾過中に発生する濾布の
目詰まりによる濾過機能の低下を、適宜逆洗によって迅
速に回復し、同時に被濾過液に直流電圧を印加すること
により懸濁粒子の沈降を促進し、その結果同一濾過槽で
濾過及び濃縮を効率良く行うことができる。すなわち、
濃縮及び濾過機能の併存により大幅に処理能力が向上
し、処理施設の小型化を図ることができる。
INDUSTRIAL APPLICABILITY According to the present invention, the deterioration of the filtration function due to the clogging of the filter cloth that occurs during filtration is rapidly recovered by appropriate backwashing, and at the same time, a DC voltage is applied to the liquid to be filtered to suspend particles Sedimentation is promoted, and as a result, filtration and concentration can be efficiently performed in the same filtration tank. That is,
The coexistence of the concentration and filtration functions greatly improves the processing capacity, and the size of the processing facility can be reduced.

【図面の簡単な説明】[Brief description of drawings]

【図1】濃縮濾過装置正面の断面説明図である。FIG. 1 is a cross-sectional explanatory view of the front of a concentrating and filtering device.

【符号の説明】[Explanation of symbols]

1 濾過槽 2 濾過筒 3 濾布 5 切り替え弁 9 電極 10 直流電源 1 Filter Tank 2 Filter Cylinder 3 Filter Cloth 5 Switching Valve 9 Electrode 10 DC Power Supply

フロントページの続き (51)Int.Cl.5 識別記号 庁内整理番号 FI 技術表示箇所 B01D 35/06 G C02F 11/12 D 7824−4D E 7824−4D Continuation of the front page (51) Int.Cl. 5 Identification number Office reference number FI technical display location B01D 35/06 G C02F 11/12 D 7824-4D E 7824-4D

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】 泥水または泥状物質から水分を除く濃縮
濾過装置であって、格子状の材料を用いて形成した濾過
筒を、その軸方向両端を閉じた状態にするとともに、軸
線方向が水平となるようにして濾過槽内に配置し、さら
に濾過筒の表面を濾布で覆い、濾過筒内を切り替え弁を
介して加圧手段に連通したことを特徴とする濃縮濾過装
置。
1. A concentrating filtration device for removing water from muddy water or mud-like substances, wherein a filter cylinder formed by using a grid-like material is closed at both axial ends and the axial direction is horizontal. And a filter cloth covering the surface of the filter cylinder, and the inside of the filter cylinder is communicated with a pressurizing means through a switching valve.
【請求項2】 濾過筒を電極として構成し、濾過筒より
下方に濾過槽底面と平行に電極を配置し、それぞれの電
極を電源に接続して両電極間に電圧を印加できるように
構成したことを特徴とする濃縮濾過装置。
2. The filter cylinder is constituted as an electrode, the electrode is arranged below the filter cylinder in parallel with the bottom face of the filtration tank, and each electrode is connected to a power source so that a voltage can be applied between both electrodes. A concentrating filtration device characterized in that
JP4253940A 1992-08-28 1992-08-28 Concentration filtration device Pending JPH0671114A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4253940A JPH0671114A (en) 1992-08-28 1992-08-28 Concentration filtration device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4253940A JPH0671114A (en) 1992-08-28 1992-08-28 Concentration filtration device

Publications (1)

Publication Number Publication Date
JPH0671114A true JPH0671114A (en) 1994-03-15

Family

ID=17258117

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4253940A Pending JPH0671114A (en) 1992-08-28 1992-08-28 Concentration filtration device

Country Status (1)

Country Link
JP (1) JPH0671114A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010046630A1 (en) * 2008-10-20 2010-04-29 Electrokinetic Limited A device and method for dewatering aqueous suspensions

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010046630A1 (en) * 2008-10-20 2010-04-29 Electrokinetic Limited A device and method for dewatering aqueous suspensions

Similar Documents

Publication Publication Date Title
EP0654294B1 (en) Process and apparatus for the filtration of solid particles from liquids and the backwashing of the filter
DE212020000081U1 (en) Device for separating dispersions
JPH09138298A (en) Filtration device using hollow fiber membrane and backwashing method thereof
CN117482596A (en) Multi-layer media bed filter with improved backwash
US5089147A (en) Underdrain for granular medium filter
US4190543A (en) Waste water treatment apparatus
EP0527465B1 (en) Sludge dewatering system
JPH0671114A (en) Concentration filtration device
JP6297415B2 (en) Muddy water treatment system and muddy water treatment method
JP2988576B2 (en) Filtration and concentration of sludge
CN213853254U (en) Up-flow filter
CN211302281U (en) Continuous coarse filtering device
JPH07214047A (en) Water purification equipment
JPH0655011A (en) Filtering device
CN219730585U (en) Biochemical sludge recovery treatment equipment and reaction device thereof
KR100323852B1 (en) Clearing system of a foul solution and irresoluble solution
CN112169387B (en) Filtration method of upflow filter
JPH05192515A (en) Device for removing suspended matter of light specific gravity in liquid
KR100644104B1 (en) Dye wastewater treatment method and apparatus and system related thereto
CN218146278U (en) Denitrification deep bed filter
JP3418829B2 (en) Wastewater treatment method and apparatus for wet sand making
KR200171835Y1 (en) Clearing system of a foul solution and irresoluble solution
CN119113795A (en) A reverse osmosis ultrafiltration water treatment equipment
DE2434308A1 (en) DEVICE FOR SEPARATING SOLIDS FROM LIQUIDS
JP2987038B2 (en) Filtration device