JPS63150394A - Regenerating agent of microfilter - Google Patents
Regenerating agent of microfilterInfo
- Publication number
- JPS63150394A JPS63150394A JP29613386A JP29613386A JPS63150394A JP S63150394 A JPS63150394 A JP S63150394A JP 29613386 A JP29613386 A JP 29613386A JP 29613386 A JP29613386 A JP 29613386A JP S63150394 A JPS63150394 A JP S63150394A
- Authority
- JP
- Japan
- Prior art keywords
- microfilter
- regenerating agent
- agent
- regenerating
- regenerant
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 230000001172 regenerating effect Effects 0.000 title claims description 14
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical group [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 10
- 150000002978 peroxides Chemical class 0.000 claims description 7
- 239000004604 Blowing Agent Substances 0.000 claims description 6
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- VTIIJXUACCWYHX-UHFFFAOYSA-L disodium;carboxylatooxy carbonate Chemical group [Na+].[Na+].[O-]C(=O)OOC([O-])=O VTIIJXUACCWYHX-UHFFFAOYSA-L 0.000 claims description 5
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 5
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 5
- 229940045872 sodium percarbonate Drugs 0.000 claims description 5
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 239000003002 pH adjusting agent Substances 0.000 claims description 3
- 239000004088 foaming agent Substances 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 11
- 239000012492 regenerant Substances 0.000 description 10
- 239000012528 membrane Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000008929 regeneration Effects 0.000 description 4
- 238000011069 regeneration method Methods 0.000 description 4
- 241000894006 Bacteria Species 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000001954 sterilising effect Effects 0.000 description 3
- 238000004659 sterilization and disinfection Methods 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- KDYFGRWQOYBRFD-UHFFFAOYSA-N Succinic acid Natural products OC(=O)CCC(O)=O KDYFGRWQOYBRFD-UHFFFAOYSA-N 0.000 description 1
- KDYFGRWQOYBRFD-NUQCWPJISA-N butanedioic acid Chemical compound O[14C](=O)CC[14C](O)=O KDYFGRWQOYBRFD-NUQCWPJISA-N 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 description 1
- 239000000292 calcium oxide Substances 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- MWNQXXOSWHCCOZ-UHFFFAOYSA-L sodium;oxido carbonate Chemical compound [Na+].[O-]OC([O-])=O MWNQXXOSWHCCOZ-UHFFFAOYSA-L 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/162—Use of acids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/164—Use of bases
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/16—Use of chemical agents
- B01D2321/168—Use of other chemical agents
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
［産業上の利用分野コ
本発明は、除菌用ミクロフィルターの目詰りを解消する
ための再生剤に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a regenerating agent for eliminating clogging of microfilters for sterilization.
［従来の技術］
従来、水中の雑菌を除去する目的でメンブランフィルタ
−等を用いる方法が、実施されている。しかし、上記メ
ンブランフィルタ−は、０．０１μ〜０．５μの微少細
孔によって除菌しているため。[Prior Art] Conventionally, a method using a membrane filter or the like has been implemented for the purpose of removing bacteria in water. However, the above membrane filter sterilizes bacteria through micropores of 0.01 to 0.5 microns.
種々の原因で目詰りを起こしやすい。They are prone to clogging due to various reasons.
例えば、目詰りの原因は、次の２点に大別できる。その
１つは、水中の濁度成分による細孔の目詰りであり、そ
してもう１つは、除菌した水中の雑菌によってメンブラ
ンフィルタ−表面に形成されるコロニーによる細孔の目
詰りである。For example, the causes of clogging can be broadly classified into the following two points. One of these is clogging of pores due to turbidity components in water, and the other is clogging of pores due to colonies formed on the membrane filter surface by bacteria in sterilized water.
従って、目詰りが生じた場合には、メンブランフィルタ
−を頻繁に交換する必要がある。そのため、メンブラン
フィルタ−自体が高価であることと相まって、ランニン
グコストが非常に高くなっている。Therefore, when clogging occurs, it is necessary to frequently replace the membrane filter. Therefore, coupled with the fact that the membrane filter itself is expensive, running costs are extremely high.
［発明が解決しようとする問題点コ
上記メンブランフィルタ−などの除菌用ミクロフィルタ
ーの目詰りを除去する手段として、洗滌処理がある。例
えば、清水をミクロフィルターの吐出側から加圧注入す
る洗滌処理によれば、ミクロフィルターの再生はある程
度可能であるが、これには高圧水の注入を非常に長い時
間をかけて行わなければならない欠点がある。加えて、
この洗滌処理ではミクロフィルターの細孔の深部に捕捉
されている濁度粒子を完全に取り除くことが不可能であ
り、またミクロフィルター表面上の細菌コロニーを分解
することも可能である。[Problems to be Solved by the Invention] A cleaning process is available as a means for removing clogging of a microfilter for sterilization such as the above-mentioned membrane filter. For example, a cleaning process in which clean water is injected under pressure from the discharge side of the microfilter allows regeneration of the microfilter to some extent, but this requires injecting high-pressure water over a very long period of time. There are drawbacks. In addition,
This washing process cannot completely remove turbidity particles trapped deep within the pores of the microfilter, and it is also possible to decompose bacterial colonies on the surface of the microfilter.
本発明は、メンブランフィルタ−などの除菌用ミクロフ
ィルターの目詰りを洗滌除去する洗滌水に添加して用い
るフィルター再生剤を提供することを主たる目的として
いる。The main object of the present invention is to provide a filter regenerating agent that can be added to washing water to remove clogging from microfilters for sterilization such as membrane filters.
［問題点を解決するための手段］
本発明に係るミクロフィルターの再生剤は、過酸化物と
、キレート機能をもつＰＨ調整剤と１発泡剤とを配合し
て成ることを特徴としているものである。[Means for Solving the Problems] The regenerating agent for microfilters according to the present invention is characterized by containing a peroxide, a PH adjuster having a chelating function, and a blowing agent. be.
本発明において、過酸化物として使用できるものは、過
炭酸塩、過酸化水素、ベルオキソニ硫酸塩、ペルオクソ
硼酸塩等であり、ＰＨ調整剤として使用できるものは、
クエン酸、リン酸、コハク酸、ＥＯＴＡ等であり、そし
て発泡剤として使用できるものは、炭酸塩、酸化カルシ
ウム等である。In the present invention, peroxides that can be used include percarbonate, hydrogen peroxide, peroxonisulfate, peroxoborate, etc., and those that can be used as a PH adjuster include:
Citric acid, phosphoric acid, succinic acid, EOTA, etc., and those that can be used as blowing agents include carbonate, calcium oxide, etc.
代表例または好ましい例は、過酸化物が過炭酸ナトリウ
ム、ＰＨ調整剤がリン酸またはクエン酸。Representative or preferred examples include sodium percarbonate as the peroxide, and phosphoric acid or citric acid as the pH adjuster.
そして発泡剤が炭酸水素ナトリウムである。また再生剤
を構成する混合物の成分割合は、過酸化物が３０〜５０
重量％、ＰＨ調整剤が２０〜４０重量％、そして発泡剤
が１０〜３０重量％であればよい。再生剤を構成する混
合物の極めて好適な成分割合例を挙げれば、次の通りで
ある。And the blowing agent is sodium hydrogen carbonate. In addition, the component ratio of the mixture constituting the regenerant is 30 to 50% peroxide.
The amount of the PH adjuster may be 20 to 40% by weight, and the blowing agent may be 10 to 30% by weight. Examples of very suitable component proportions of the mixture constituting the regenerant are as follows.
過炭酸ナトリウム ４０ｇ クエン酸 ３５ｇ 炭酸水素ナトリウム ２５ｇ 混合は適当な手段で行えばよい。Sodium percarbonate 40g Citric acid 35g Sodium hydrogen carbonate 25g Mixing may be performed by any suitable means.
［作用］
本発明による再生剤は、４０〜６０℃程度の温水につけ
ると、微少な気泡と発生期酸素を発生する。そこで、通
常、ミクロフィルターを使用する方向とは逆な方向、す
なわち吐出口側から加圧注入することにより、ミクロフ
ィルター中の細孔の深部に捕捉されている濁度粒子は、
微少な泡の作用によって取り除かれ、同時に過酸化物の
分解で発生する発生期の酸素の作用によって、ミクロフ
ィルター表面上の細菌コロニーは分解され、除去される
。[Function] When the regenerant according to the present invention is immersed in hot water of about 40 to 60°C, it generates minute bubbles and nascent oxygen. Therefore, by injecting under pressure in the opposite direction to the direction in which the microfilter is used, that is, from the discharge port side, the turbidity particles trapped in the deep part of the pores in the microfilter can be removed.
Bacterial colonies on the microfilter surface are broken down and removed by the action of the microbubbles and at the same time the nascent oxygen generated by the decomposition of the peroxide.
［発明の実施例コ 再生剤は、下記成分割合の再生剤を使用した。[Embodiments of the invention] A regenerating agent having the following component ratio was used.
過炭酸ナトリウム ４０ｇ
クエン酸 ３５ｇ
炭酸水素ナトリウム ２５ｇ
上記再生剤を用いて、ミクロフィルターを再生する手段
としては、図示の装置を使用した。Sodium percarbonate 40g Citric acid 35g Sodium hydrogen carbonate 25g As a means for regenerating the microfilter using the above regenerating agent, the apparatus shown in the figure was used.
すなわち、１はミクロフィルターカートリッジ、２はミ
クロフィルター、３はカートリッジ給水口、４はカート
リッジ吐出口、５は再生剤タンク、６は再生剤送出口、
７はタンクキャップであり、再生剤タンク５の送出口６
をカートリッジ１の吐出口４に連結しである。That is, 1 is a microfilter cartridge, 2 is a microfilter, 3 is a cartridge water supply port, 4 is a cartridge discharge port, 5 is a regenerant tank, 6 is a regenerant outlet,
7 is a tank cap, and the outlet 6 of the regenerant tank 5
is connected to the discharge port 4 of the cartridge 1.
再生処理においては、上記再生剤を温水と共にタンク５
に入れ、直ちにキャップ７を取付けると、発泡剤の作用
によって再生剤がミクロフィルターの細孔内に加圧注入
され、微少な気泡により、ミクロフィルターの細孔の深
部に捕捉されている濁度粒子が除去され、同時にフィル
ター表面上の細菌コロニーも分解除去され、またＣ ａ
Ｃ０３などのスケール分がキレート機能をもつＰＨ調
整成分により溶出され、排液がカートリッジ給水口３か
ら外に流れることが認められた。また、この再生処理に
よって再生したミクロフィルターは新しいフィルターと
ほとんど同じ濾過機能を具備していることが認められた
。In the regeneration process, the regenerant is added to tank 5 along with hot water.
When the cap 7 is immediately attached, the regenerating agent is injected under pressure into the pores of the microfilter by the action of the foaming agent, and the turbidity particles trapped deep within the pores of the microfilter are removed by the minute air bubbles. is removed, and at the same time bacterial colonies on the filter surface are also decomposed and removed, and Ca
It was observed that scale components such as C03 were eluted by the pH adjusting component having a chelating function, and the waste liquid flowed outside from the cartridge water supply port 3. Furthermore, it was confirmed that the microfilter regenerated by this regeneration process had almost the same filtration function as a new filter.
［発明の効果］
本発明の再生剤の使用によれば、ミクロフィルターの目
詰りを迅速確実に除去できるので、フィルターのランニ
ングコストの大幅な低減が図れる。[Effects of the Invention] By using the regenerating agent of the present invention, clogging of the microfilter can be quickly and reliably removed, so that the running cost of the filter can be significantly reduced.
また、本発明の再生剤を、例えば前述したような加圧タ
ンクを併用すれば、発泡剤自体が発生するガスの圧力に
よって自動的にミクロフィルター中に再生剤が加圧注入
されるので、ポンプその他の補助加圧手段の使用を省く
ことができると共にフィルターの再生処理作業の能率向
上に大きく寄与することができる。Furthermore, if the regenerant of the present invention is used in conjunction with a pressurized tank such as the one described above, the regenerant will be automatically injected into the microfilter under pressure by the pressure of the gas generated by the blowing agent itself, allowing the pump to pump The use of other auxiliary pressurizing means can be omitted, and it can greatly contribute to improving the efficiency of the filter regeneration process.
図面は、この発明による再生剤を使用してミクロフィル
ターを再生する装置の縦断面図である。
１・・・ミクロフィルターカートリッジ、２・・・ミク
ロフィルター、
３・・・カートリッジ給水口、
４・・・吐出口、
５・・・再生剤タンク、
６・・・送出口、
７・・・タンクのキャップ。The drawing is a longitudinal sectional view of an apparatus for regenerating a microfilter using a regenerating agent according to the present invention. DESCRIPTION OF SYMBOLS 1... Micro filter cartridge, 2... Micro filter, 3... Cartridge water supply port, 4... Discharge port, 5... Regenerant tank, 6... Outlet port, 7... Tank cap.
Claims (3)
発泡剤とを配合して成ることを特徴とするミクロフィル
ターの再生剤。(1) peroxide and a pH adjuster with a chelating function,
A microfilter regenerating agent characterized by being formulated with a foaming agent.
酸またはクエン酸、そして発泡剤が炭酸水素ナトリウム
である特許請求の範囲第１項記載のミクロフィルターの
再生剤。(2) The microfilter regenerating agent according to claim 1, wherein the peroxide is sodium percarbonate, the pH adjuster is phosphoric acid or citric acid, and the blowing agent is sodium hydrogen carbonate.
水素ナトリウム２５ｇを配合して成ることを特徴とする
特許請求の範囲第１項記載のミクロフィルターの再生剤
。(3) The regenerating agent for microfilters according to claim 1, which comprises 40 g of sodium percarbonate, 35 g of citric acid, and 25 g of sodium bicarbonate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29613386A JPS63150394A (en) | 1986-12-11 | 1986-12-11 | Regenerating agent of microfilter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29613386A JPS63150394A (en) | 1986-12-11 | 1986-12-11 | Regenerating agent of microfilter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63150394A true JPS63150394A (en) | 1988-06-23 |
Family
ID=17829573
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29613386A Pending JPS63150394A (en) | 1986-12-11 | 1986-12-11 | Regenerating agent of microfilter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63150394A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000009245A3 (en) * | 1998-08-12 | 2000-08-03 | Mitsubishi Rayon Co | Membrane assembly for solid-liquid separation, method of cleaning the same, and detergent |
| JP2008508093A (en) * | 2004-08-04 | 2008-03-21 | ユー・エス・フィルター・ウェイストウォーター・グループ・インコーポレイテッド | Method for cleaning membranes and chemicals therefor |
| EP1911509A3 (en) * | 1998-08-12 | 2008-06-11 | Mitsubishi Rayon Co. Ltd. | A detergent for separating membrane |
| WO2008080627A1 (en) * | 2006-12-29 | 2008-07-10 | Nev's New Ecological Vision's Gmbh | Contact lens cleaner |
-
1986
- 1986-12-11 JP JP29613386A patent/JPS63150394A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000009245A3 (en) * | 1998-08-12 | 2000-08-03 | Mitsubishi Rayon Co | Membrane assembly for solid-liquid separation, method of cleaning the same, and detergent |
| US6280626B1 (en) | 1998-08-12 | 2001-08-28 | Mitsubishi Rayon Co., Ltd. | Membrane separator assembly and method of cleaning the assembly utilizing gas diffuser underneath the assembly |
| US6325938B1 (en) | 1998-08-12 | 2001-12-04 | Mitsubishi Rayon Co., Ltd. | Method of cleaning membrane assembly with detergent |
| US6328886B1 (en) | 1998-08-12 | 2001-12-11 | Mitsubishi Rayon Co., Ltd. | Gas diffuser for aeration vessel of membrane assembly |
| EP1911509A3 (en) * | 1998-08-12 | 2008-06-11 | Mitsubishi Rayon Co. Ltd. | A detergent for separating membrane |
| JP2008508093A (en) * | 2004-08-04 | 2008-03-21 | ユー・エス・フィルター・ウェイストウォーター・グループ・インコーポレイテッド | Method for cleaning membranes and chemicals therefor |
| WO2008080627A1 (en) * | 2006-12-29 | 2008-07-10 | Nev's New Ecological Vision's Gmbh | Contact lens cleaner |
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