JPS643126B2 - - Google Patents
Info
- Publication number
- JPS643126B2 JPS643126B2 JP59019102A JP1910284A JPS643126B2 JP S643126 B2 JPS643126 B2 JP S643126B2 JP 59019102 A JP59019102 A JP 59019102A JP 1910284 A JP1910284 A JP 1910284A JP S643126 B2 JPS643126 B2 JP S643126B2
- Authority
- JP
- Japan
- Prior art keywords
- backwashing
- filtration device
- permeate
- passageway
- filter material
- 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
Links
- 238000001914 filtration Methods 0.000 claims description 18
- 238000011001 backwashing Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 14
- 239000012466 permeate Substances 0.000 claims description 13
- 239000000706 filtrate Substances 0.000 claims description 3
- 238000000108 ultra-filtration Methods 0.000 claims description 3
- 239000012141 concentrate Substances 0.000 claims 3
- 239000000356 contaminant Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 5
- 239000011550 stock solution Substances 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000011109 contamination Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 239000012528 membrane Substances 0.000 description 2
- 230000000813 microbial effect Effects 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000001223 reverse osmosis Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
- 238000005201 scrubbing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Filtration Of Liquid (AREA)
Description
【発明の詳細な説明】
（技術の背景）
本発明は各種の液体を瀘過する瀘過装置に用い
る瀘材の逆洗方法において原液の圧力を伸縮性ま
たは可撓性材料を介して透過液側に伝えることに
より逆洗することを特徴とする瀘過装置に関す
る。DETAILED DESCRIPTION OF THE INVENTION (Technical background) The present invention is a method for backwashing a filter material used in a filtration device for filtering various liquids, in which the pressure of the stock solution is applied to the permeated liquid through a stretchable or flexible material. The present invention relates to a filtration device characterized by backwashing by transmitting water to the side.
瀘材として瀘紙や瀘布を用いる一般の瀘過から
半透膜を用いる限外瀘過、逆浸透に至るまで瀘過
技術は多方面で使用されているが、いづれも一定
時間使用すると液中の懸濁物または液中からの析
出物により瀘過能力が低下する。そしてこれが瀘
過技術における最大の問題となつており、この対
策として以下のような各種の方法が講じられてい
る。 Filtration technology is used in a wide range of fields, from general filtration using filter paper or filter cloth to ultrafiltration using semipermeable membranes and reverse osmosis, but all of them lose their liquid content after a certain period of use. The filtration ability decreases due to suspended matter in the filter or precipitates from the liquid. This has become the biggest problem in filtration technology, and various methods such as those described below have been taken as countermeasures.
（従来技術およびその欠点）
上記いづれの瀘過技術においても最終的には使
用している瀘材を取り替へる訳であるが、取り替
へるまでには通常何らかの透過性能回復手段を講
じるのが一般的である。(Prior art and its disadvantages) In all of the above filtration technologies, the filtration material used is eventually replaced, but before replacing it, some kind of permeation performance recovery method is usually taken. is common.
例えば透過液をポンプで加圧して瀘材中を逆流
させる逆洗法、瀘材上に堆積した瀘さいを薬剤で
溶解する薬洗法、機械的に瀘さいを除去する騒き
取り法または擦洗法などがよく知られている。 For example, a backwash method in which the permeate is pressurized with a pump and flows back through the filter material, a chemical washing method in which the filtrate deposited on the filtration material is dissolved with a chemical, and a scraping method or scrubbing method in which the filtrate is mechanically removed. The law is well known.
これらの方法の中で逆洗法は最も簡単で、且つ
透過性能、回復効果が顕著で、広く用いられてい
る方法である。 Among these methods, the backwashing method is the simplest and has remarkable permeation performance and recovery effect, and is widely used.
従来から行なわれている逆洗法は原液加圧ポン
プの他に透過液側に設置したもう一つの加圧ポン
プで透過液または別途準備した洗浄液を瀘材を通
して透過液側から原液側に逆流させる方式が一般
的である。 In the conventional backwashing method, in addition to the stock solution pressure pump, another pressure pump is installed on the permeate side to flow the permeate or a separately prepared cleaning solution back through the filter material from the permeate side to the stock solution side. This method is common.
しかしながら、このように別途加圧ポンプを設
置して逆洗する方式では設備が複雑により、設備
費も増大するので好ましくない。またこのような
方式では透過液側の微生物的汚染が避けられず、
用途によつては採用できない場合もある。 However, this method of backwashing by separately installing a pressurizing pump is not preferable because the equipment is complicated and the equipment cost increases. In addition, with this method, microbial contamination on the permeate side is unavoidable,
It may not be possible to adopt it depending on the purpose.
そこで本発明者は簡単な装置で、且つ汚染の恐
れのないように透過液側を加圧する方法について
鋭意検討した結果本発明に到達した。 Therefore, the inventor of the present invention conducted extensive research on a method of pressurizing the permeated liquid side using a simple device and without the risk of contamination, and as a result, arrived at the present invention.
（本発明の構成）
以下に本発明に係る瀘過装置の構成を実施態様
を表わした第１図に基いて詳細に説明する。(Configuration of the present invention) The configuration of the filtering device according to the present invention will be explained in detail below based on FIG. 1 showing an embodiment.
第１図において１−１は原液供給ラインで、用
途によつては加圧ポンプが設置されている場合も
あり、また給水ラインの水圧をそのまま利用する
場合もある。 In FIG. 1, reference numeral 1-1 denotes a stock solution supply line, and depending on the application, a pressure pump may be installed, or the water pressure of the water supply line may be used as is.
２−２は瀘過エレメント４−４への給液を遮断
するための弁、３−３は逆洗工程において可撓性
部材６−６へ液を供給するための弁、４−４は瀘
過エレメントで、例えば限外瀘過法などでは半透
膜モジユールに相当するものである。 2-2 is a valve for cutting off liquid supply to the filter element 4-4, 3-3 is a valve for supplying liquid to the flexible member 6-6 in the backwashing process, and 4-4 is a filter For example, in ultrafiltration, it corresponds to a semipermeable membrane module.
５−５は正常運転時には開となつている弁また
はオリフイスまたは開度が適度に調整固定された
弁で、瀘過エレメントの瀘液の圧力で可撓性部材
６−６が変形することにより内部の液の一部がこ
こを通つて排出される。６−６は可撓性部料でダ
イヤフラム、ベローズ、袋などまたはピストン−
シリンダーの様なものでよい。 Reference numeral 5-5 is a valve or orifice that is open during normal operation, or a valve whose opening degree is appropriately adjusted and fixed. A portion of the liquid is drained through this. 6-6 is a flexible member such as a diaphragm, bellows, bag, or piston.
It could be something like a cylinder.
７−７は正常運転時は開となつている弁で瀘過
エレメント４−４の透過液はこの弁を通つて透過
水ライン１０−１０に送られる。 A valve 7-7 is open during normal operation, and the permeate from the filter element 4-4 is sent to the permeate line 10-10 through this valve.
８−８は調圧弁またはオリフイスまたは適度に
開度が調整固定された弁。９−９は濃度液ライン
または逆洗時の汚水の排水ライン。 8-8 is a pressure regulating valve, an orifice, or a valve whose opening degree is adjusted and fixed appropriately. 9-9 is a concentration liquid line or a wastewater drainage line during backwashing.
１０−１０は透過液ライン、１１−１１は正常
運転時に可撓性材料６−６の変形（第１図６−６
の点線部が下に凸になつた状態）によつて押し出
される液の排出ライン、または５−５がオリフイ
スなどの場合は逆洗時に原水が常時少量排出され
るラインである。 10-10 is the permeate line, 11-11 is the deformation of the flexible material 6-6 during normal operation (Fig. 1 6-6
(the dotted line is convex downward), or if 5-5 is an orifice, it is a line through which a small amount of raw water is constantly discharged during backwashing.
本発明のポインは可撓性部材６−６によつて原
液ラインと透過液ラインが隔てられていて液の相
互の従来なしに、可撓性部材６−６の変形分（第
１図６−６の点線部が下に凸から上に凸状に変形
する分）に相当する体積の透過液が瀘材４−４を
通つて原液側に逆流し、逆洗作用が働く訳である
が、この透過液を逆流させるための駆動力として
原液側の圧力を利用できることにある。 The key point of the present invention is that the flexible member 6-6 separates the raw liquid line and the permeated liquid line, so that the deformation of the flexible member 6-6 (Fig. The volume of the permeated liquid corresponding to the amount by which the dotted line part 6 deforms from a downward convex shape to an upward convex shape flows back through the filter material 4-4 to the stock solution side, and a backwashing effect is activated. The advantage is that the pressure on the raw solution side can be used as a driving force to cause the permeate to flow backwards.
本発明において懸念されるのはダイヤフラムな
どの可撓性部材の変形分に相当する体積をあまり
大きくとれない、即ち１回の逆洗量が少ないこと
である。しかしながらこの問題については正常運
転の合い間に行なう逆洗の頻度を増せば解決する
ことであり、むしろ例えわづかな逆洗量でも頻繁
に行なつた方が洗浄効果が大きいことが経験的に
確かめられているので実用的には問題とはならな
い。 A concern in the present invention is that the volume corresponding to the deformation of a flexible member such as a diaphragm cannot be made very large, that is, the amount of backwashing per time is small. However, this problem can be solved by increasing the frequency of backwashing between normal operations, and experience has shown that even if the amount of backwashing is small, the cleaning effect is greater if it is performed frequently. Since this has been confirmed, there is no problem in practical use.
第２図は第１図に示した装置のフローシート中
の各弁の開閉パターンを示したものであり、正常
運転、逆洗運転の切替へ時間サイクルは処理対象
液によつて異なる。第２図において斜線で示した
範囲は各弁が開状態になつていることを表わし、
弁８−８についてのみ逆洗時の方が正常運転時よ
り開度が大きいことを示している。 FIG. 2 shows the opening/closing pattern of each valve in the flow sheet of the apparatus shown in FIG. 1, and the time cycle for switching between normal operation and backwash operation differs depending on the liquid to be treated. The shaded area in Figure 2 indicates that each valve is in the open state,
It is shown that only valve 8-8 has a larger opening degree during backwashing than during normal operation.
（本発明による効果）
本発明は瀘過装置を適用した場合、従来法と比
較して以下のような効果が得られる。(Effects of the present invention) When the present invention applies a filtering device, the following effects can be obtained compared to the conventional method.
(イ) 従来法による逆洗と比較して逆洗用の加圧ポ
ンプを使用しないので、設備経済的に有利であ
る。(a) Compared to backwashing using conventional methods, this method is advantageous in terms of equipment economy because it does not use a pressure pump for backwashing.
(ロ) 機械ユニツトがコンパクトになり、メンテナ
ンス箇所が少なくなる。(b) The mechanical unit becomes more compact, reducing the number of maintenance points.
(ハ) 原液側と透過液側を遮断しているので、微生
物的にも汚染されることはない。(c) Since the raw solution side and the permeate side are isolated, there is no chance of microbial contamination.
第１図は本発明の実施態様を示した瀘過装置の
フローシート。第２図は正常運転時と逆洗時にお
ける各弁の開閉パターンを示すダイヤグラムであ
る。
FIG. 1 is a flow sheet of a filtration device showing an embodiment of the present invention. FIG. 2 is a diagram showing the opening and closing patterns of each valve during normal operation and during backwashing.
Claims (1)
ことにより瀘材上に堆積した汚染物質を瀘材面か
ら浮上させて瀘材を逆洗する方法において、伸縮
性または可撓性材料の両側が同時に原液通路の一
部と透過液通路の一部を構成し、原液と透過液の
圧力差を補償するよう前記伸縮性または可撓性材
料が原液側または透過液側へ変形するようになつ
ていることを特徴とする瀘過装置。 ２ 伸縮性または可撓性部材がダイヤフラムであ
る特許請求範囲第１項記載の瀘過装置。 ３ 瀘過装置が限外瀘過装置である特許請求範囲
第１項記載の瀘過装置。[Scope of Claims] 1. In a method of backwashing the filter material by causing a part of the filtrate to pass through the filter material back to float the contaminants accumulated on the filter material from the surface of the filter material after the filtration device is operated. Both sides of the elastic or flexible material simultaneously constitute part of the concentrate passageway and part of the permeate passageway, such that said elastic or flexible material constitutes part of the concentrate passageway and part of the permeate passageway, such that said elastic or flexible material constitutes a part of the concentrate passageway and a part of the permeate passageway; A filtration device characterized by being deformed toward the liquid side. 2. The filtration device according to claim 1, wherein the stretchable or flexible member is a diaphragm. 3. The filtration device according to claim 1, wherein the filtration device is an ultrafiltration device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59019102A JPS60166013A (en) | 1984-02-03 | 1984-02-03 | Filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59019102A JPS60166013A (en) | 1984-02-03 | 1984-02-03 | Filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS60166013A JPS60166013A (en) | 1985-08-29 |
| JPS643126B2 true JPS643126B2 (en) | 1989-01-19 |
Family
ID=11990112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59019102A Granted JPS60166013A (en) | 1984-02-03 | 1984-02-03 | Filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS60166013A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2514930B2 (en) * | 1986-05-21 | 1996-07-10 | オルガノ株式会社 | Membrane separation device with backwash ejector |
| JPH0694143A (en) * | 1992-09-16 | 1994-04-05 | Nippon Millipore Kogyo Kk | Back washing unit |
| FR2815269B1 (en) * | 2000-10-13 | 2003-08-15 | Tech Avancees & Membranes Ind | DEVICE AND INSTALLATION FOR TANGENTIAL FILTRATION INCLUDING RETROFILTRATION OPERATING MODE |
| EP1652564A1 (en) * | 2004-10-27 | 2006-05-03 | Martin Eurlings | Back-flush device |
-
1984
- 1984-02-03 JP JP59019102A patent/JPS60166013A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS60166013A (en) | 1985-08-29 |
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