JPH04244289A - Treatment of washing water - Google Patents
Treatment of washing waterInfo
- Publication number
- JPH04244289A JPH04244289A JP3008738A JP873891A JPH04244289A JP H04244289 A JPH04244289 A JP H04244289A JP 3008738 A JP3008738 A JP 3008738A JP 873891 A JP873891 A JP 873891A JP H04244289 A JPH04244289 A JP H04244289A
- Authority
- JP
- Japan
- Prior art keywords
- activated carbon
- washing water
- washing
- water
- hollow fiber
- 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
- 238000005406 washing Methods 0.000 title claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 52
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 71
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 24
- 239000012510 hollow fiber Substances 0.000 claims abstract description 19
- 239000012528 membrane Substances 0.000 claims abstract description 19
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000003456 ion exchange resin Substances 0.000 claims abstract description 11
- 229920003303 ion-exchange polymer Polymers 0.000 claims abstract description 11
- 239000004094 surface-active agent Substances 0.000 claims abstract description 10
- 239000003513 alkali Substances 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 20
- 239000000839 emulsion Substances 0.000 claims description 13
- 238000004140 cleaning Methods 0.000 claims description 8
- 238000005238 degreasing Methods 0.000 claims description 7
- 230000004907 flux Effects 0.000 claims description 7
- 150000002500 ions Chemical class 0.000 abstract description 5
- 238000001914 filtration Methods 0.000 abstract description 3
- 229920000647 polyepoxide Polymers 0.000 abstract description 2
- 239000004593 Epoxy Substances 0.000 abstract 1
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical group C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 abstract 1
- 239000000835 fiber Substances 0.000 abstract 1
- 239000000565 sealant Substances 0.000 abstract 1
- 229920002803 thermoplastic polyurethane Polymers 0.000 abstract 1
- 239000005416 organic matter Substances 0.000 description 9
- 239000003921 oil Substances 0.000 description 5
- 239000012459 cleaning agent Substances 0.000 description 4
- 239000003599 detergent Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 description 3
- 238000001223 reverse osmosis Methods 0.000 description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 2
- 238000000909 electrodialysis Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000004064 recycling Methods 0.000 description 2
- 239000008237 rinsing water Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 1
- 239000004115 Sodium Silicate Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- -1 alkali metal salts Chemical class 0.000 description 1
- 150000001447 alkali salts Chemical class 0.000 description 1
- 239000003957 anion exchange resin Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003729 cation exchange resin Substances 0.000 description 1
- 229920002301 cellulose acetate Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920005749 polyurethane resin Polymers 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000011045 prefiltration Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 description 1
- 229910052911 sodium silicate Inorganic materials 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
Landscapes
- Treatment Of Water By Ion Exchange (AREA)
- Water Treatment By Sorption (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、界面活性剤水溶液、エ
マルジョン洗浄剤、アルカリ洗浄剤等の水系洗浄剤や水
すすぎを必要とする有機溶剤を主体として準水系洗浄剤
による、金属、ガラス、プラスチック、セラミックス等
の脱脂洗浄やプリント基板のはんだフラックス洗浄の水
洗工程の水洗水を処理して水洗工程に戻し、水洗水とし
て循環使用する方法に関するものである。[Industrial Application Field] The present invention is applicable to the cleaning of metals, glass, etc. using semi-aqueous cleaning agents mainly consisting of aqueous cleaning agents such as surfactant aqueous solutions, emulsion cleaning agents, alkaline cleaning agents, and organic solvents that require water rinsing. The present invention relates to a method of treating rinsing water from the rinsing process for degreasing plastics, ceramics, etc. and cleaning solder flux for printed circuit boards, returning it to the rinsing process, and recycling it as rinsing water.
【０００２】0002
【従来の技術】水系洗浄剤または準水系洗浄剤による脱
脂洗浄やフラックス洗浄の水洗工程から排出される水洗
水には、洗浄剤や汚れに由来する界面活性剤、有機溶剤
、油、ロジン、アルカリ金属塩、乳化物等が多量に混入
してくる。この水洗水を循環使用するためには、循環機
構の中で、これらの混入物を除去処理する必要がある。[Prior Art] Washing water discharged from the washing process of degreasing and flux cleaning using aqueous or semi-aqueous detergents contains surfactants, organic solvents, oils, rosins, alkalis, etc. derived from detergents and dirt. A large amount of metal salts, emulsions, etc. are mixed in. In order to reuse this washing water, it is necessary to remove these contaminants in the circulation mechanism.
【０００３】その処理方法として、界面活性剤、油、有
機溶剤、ロジン等の有機成分に対しては、活性炭、活性
汚泥、逆浸透、凝集沈殿等があり、金属イオン、アルカ
リ金属塩等のイオン成分に対しては、イオン交換樹脂、
電気透析、逆浸透等がある。これらのうち、脱脂用洗浄
やフラックス洗浄の水洗工程における水洗水の循環使用
の処理方法を考えた場合、短時間のうちに高度の処理を
行い、水洗水として使用可能なまでに上記混入成分を除
去できること、さらに、処理装置がコンパクトで、洗浄
機の附属設備として簡単に設置可能なことが望まれる。
この観点から活性炭とイオン交換樹脂を組合せた方法が
用いられている。この場合、通常、水洗水を、活性炭を
充填したカラムに通して有機物を除去した後に、イオン
交換樹脂を充填したカラムに通してイオンを除去する方
法が取られる。Treatment methods include activated carbon, activated sludge, reverse osmosis, coagulation and precipitation for organic components such as surfactants, oils, organic solvents, and rosin, and ions such as metal ions and alkali metal salts. For the ingredients, ion exchange resin,
Examples include electrodialysis and reverse osmosis. Among these, when considering a treatment method that recycles washing water in the washing process for degreasing and flux cleaning, it performs a high level of treatment in a short period of time and removes the above-mentioned contaminants before it can be used as washing water. It is desired that the treatment equipment be able to be removed, and that the treatment equipment be compact and easily installed as an accessory to a washing machine. From this point of view, a method combining activated carbon and ion exchange resin is used. In this case, a method is usually used in which the washing water is passed through a column filled with activated carbon to remove organic substances, and then passed through a column filled with an ion exchange resin to remove ions.
【０００４】0004
【発明が解決しようとする課題】しかしながら、水系洗
浄剤または準水系洗浄剤による脱脂洗浄やフラックス洗
浄から出る水洗水中には、洗浄剤中の界面活性剤やアル
カリによる、油、ロジン等の乳化物が含まれ、活性炭に
対する有機物の負荷が非常に高い。このため、吸着容量
の限られた活性炭の有機物除去能力が早期に低下し、活
性炭を新しい活性炭と交換する頻度が高くなる。活性炭
の交換頻度が高いと、活性炭の再生維持費用がかかるだ
けでなく、生産にも支障をきたすという問題が起きる。[Problems to be Solved by the Invention] However, the washing water from degreasing and flux cleaning using aqueous or semi-aqueous detergents contains emulsions of oil, rosin, etc. due to surfactants and alkalis in the detergent. , and the load of organic matter on activated carbon is very high. For this reason, the ability of activated carbon to remove organic matter, which has a limited adsorption capacity, quickly decreases, and the activated carbon must be replaced with new activated carbon more frequently. Frequent replacement of activated carbon not only increases the cost of regenerating and maintaining the activated carbon, but also causes problems in production.
【０００５】また、活性炭が処理する排水中の界面活性
剤、油分、有機溶剤、乳化物等の有機成分の濃度が高い
と、処理後の排水中の有機成分濃度も高くなり，乳化物
が完全には除去できず、続いてイオン交換樹脂による処
理を行う場合、イオン交換樹脂が有機汚染され、イオン
交換能力が低下するという問題も起きる。これらの見地
から、水洗水中の乳化物を除去し、活性炭への有機物負
荷をできる限り減らすことが望まれる。[0005] Furthermore, if the concentration of organic components such as surfactants, oils, organic solvents, and emulsions in the wastewater treated by activated carbon is high, the concentration of organic components in the wastewater after treatment will also be high, and the emulsions will not be completely formed. If the ion-exchange resin cannot be removed and is subsequently treated with an ion-exchange resin, the ion-exchange resin will be contaminated with organic matter and the ion-exchange capacity will be reduced. From these viewpoints, it is desirable to remove emulsions in the washing water and reduce the organic matter load on activated carbon as much as possible.
【０００６】[0006]
【課題を解決するための手段】本発明者らは、鋭意検討
した結果、中空繊維状の限外濾過膜で限外濾過すること
により、簡単かつコンパクトな装置を用いる方法で、水
洗水中に含まれる乳化物を除去し、活性炭への有機物負
荷を大幅に軽減することを見いだし、本発明を完成する
に至った。[Means for Solving the Problems] As a result of intensive studies, the present inventors have found that by ultrafiltration with a hollow fiber ultrafiltration membrane, the amount of water contained in washing water can be The present inventors have discovered that the organic matter load on activated carbon can be significantly reduced by removing the emulsions that are present in the activated carbon, and have completed the present invention.
【０００７】すなわち、本発明は、脱脂洗浄またはフラ
ックス洗浄の水洗工程の、界面活性剤および／またはア
ルカリによる乳化物を含む水洗水を処理して水洗工程に
戻し、循環再使用する方法において、この水洗水を、中
空繊維状の限外濾過膜で限外濾過した後に、活性炭処理
し、水洗工程に戻すことを特徴とする水洗水の処理方法
、及び上記方法により活性炭処理した水洗水をイオン交
換樹脂処理し、水洗工程に戻すことを特徴とする水洗水
の処理方法である。That is, the present invention provides a method for treating wash water containing an emulsion of a surfactant and/or alkali in the water washing process of degreasing or flux cleaning, returning it to the washing process, and recycling and reusing this water. A washing water treatment method characterized by ultrafiltering washing water with a hollow fiber ultrafiltration membrane, treating it with activated carbon, and returning it to the washing step, and ion-exchanging the washing water treated with activated carbon by the above method. This is a method for treating washing water characterized by treating it with a resin and returning it to the washing step.
【０００８】本発明で用いる中空繊維状の限外濾過膜の
素材は、ポリアクリロニトリル、酢酸セルロース、ポリ
スルホン等の従来の限外濾過に用いられているものを用
いることができる。中空繊維状の限外濾過膜を用いるに
あたっては、大きな濾過膜面積を得るために、この中空
繊維を円筒形の容器の中に多数充填し、中空繊維の両端
が、開口した状態でエポキシ樹脂やポリウレタン樹脂等
のシール材でシールされたものとして用いるのが好まし
い。As the material for the hollow fiber ultrafiltration membrane used in the present invention, those used in conventional ultrafiltration, such as polyacrylonitrile, cellulose acetate, and polysulfone, can be used. When using a hollow fiber ultrafiltration membrane, in order to obtain a large filtration membrane area, a large number of these hollow fibers are filled in a cylindrical container, and both ends of the hollow fibers are left open and filled with epoxy resin. It is preferable to use one sealed with a sealing material such as polyurethane resin.
【０００９】本発明で用いる中空繊維状の限外濾過膜の
膜厚は１０〜４００μｍが好ましく、２０〜１００μｍ
がさらに好ましい。また、中空繊維状の限外濾過膜の内
径は１００〜１０００μｍが好ましく、１００〜４００
μｍがさらに好ましい。また、中空繊維状の限外濾過膜
の分画分子量は、５，０００〜１５，０００が好ましく
、６，０００〜１３，０００がさらに好ましい。さらに
、中空繊維状の限外濾過膜の水の濾過速度は、膜面積１
ｍ２ あたり１０ｌ／ｈ以上あるのが好ましく、１００
ｌ／ｈ以上あるのがさらに好ましい。[0009] The thickness of the hollow fiber ultrafiltration membrane used in the present invention is preferably 10 to 400 μm, and preferably 20 to 100 μm.
is even more preferable. Further, the inner diameter of the hollow fiber ultrafiltration membrane is preferably 100 to 1000 μm, and 100 to 400 μm.
μm is more preferable. Further, the molecular weight cutoff of the hollow fiber ultrafiltration membrane is preferably from 5,000 to 15,000, more preferably from 6,000 to 13,000. Furthermore, the water filtration rate of a hollow fiber ultrafiltration membrane is
It is preferable that the flow rate is 10 l/h or more per m2, and 100 l/h or more.
More preferably, it is 1/h or more.
【００１０】なお、限外濾過の前に、ゴミを除くための
、膜状、わた状、ワインド型等のプレフィルターを置く
ことが好ましい。本発明で用いる中空繊維状の限外濾過
膜については、特開昭４７−５０３９８号公報、特開昭
５７−１３６９０３号公報に開示された方法によって製
造したものを用いることができる。[0010] Before ultrafiltration, it is preferable to place a pre-filter in the form of a membrane, cotton, wind, etc. to remove dust. As for the hollow fiber ultrafiltration membrane used in the present invention, those manufactured by the methods disclosed in JP-A-47-50398 and JP-A-57-136903 can be used.
【００１１】上記特定の中空繊維状の限外濾過膜によっ
て限外濾過された水洗水は、次いで活性炭処理される。
通常、これには活性炭カラムが用いられる。活性炭カラ
ムに充填される活性炭としては、水処理粒状活性炭を用
いるのが一般的である。活性炭の量は、個々の場合によ
り、処理水量、設置スペース、交換頻度等により決めら
れる。[0011] The washing water ultrafiltered by the above-mentioned specific hollow fiber ultrafiltration membrane is then treated with activated carbon. Usually an activated carbon column is used for this. Water-treated granular activated carbon is generally used as the activated carbon packed in the activated carbon column. The amount of activated carbon is determined in each case depending on the amount of water to be treated, the installation space, the frequency of replacement, etc.
【００１２】このようにして活性炭処理された水洗水中
に多量のイオンが含まれている場合は、イオン交換樹脂
等でイオン成分を除去してから水洗工程に戻し、水洗水
として循環使用することができる。イオン成分の除去は
、この他、電気透析や、逆浸透によって可能である。[0012] If the rinse water treated with activated carbon contains a large amount of ions, it is possible to remove the ionic components with an ion exchange resin, etc., and then return it to the washing process and reuse it as rinse water. can. Ionic components can also be removed by electrodialysis or reverse osmosis.
【００１３】[0013]
【実施例】以下、実施例により、本発明を具体的に説明
する。[Examples] The present invention will be specifically explained below with reference to Examples.
【００１４】[0014]
【実施例１〜５および比較例】炭酸ソーダ、ケイ酸ソー
ダ、界面活性剤、油、ロジンを含む水洗水モデル液（透
過率４４％、ＣＯＤ６４０ｐｐｍ）を、表２に示す中空
繊維状の限外濾過膜Ａ〜Ｅで限外濾過し、ついで、水処
理用の粒状活性炭（クラレ（株）製、商品名：クラレコ
ールＫＷ１０〜３０メッシュ）を充填したカラムに通し
た。限外濾過後の水洗水の透過率およびＣＯＤ、活性炭
カラム通過後の水洗水の透過率及びＣＯＤを測定した。
その結果を表１に示す。[Examples 1 to 5 and Comparative Examples] A washing water model solution (transmittance 44%, COD 640 ppm) containing soda carbonate, sodium silicate, surfactant, oil, and rosin was used to form hollow fiber-like ultraviolet particles shown in Table 2. The mixture was ultrafiltered using filter membranes A to E, and then passed through a column filled with granular activated carbon for water treatment (manufactured by Kuraray Co., Ltd., trade name: Kuraray Coal KW 10-30 mesh). The transmittance and COD of the washing water after ultrafiltration and the transmittance and COD of the washing water after passing through the activated carbon column were measured. The results are shown in Table 1.
【００１５】上記方法で乳化物および有機物を除去した
水洗水中には、まだアルカリ塩が含まれ、導電率１，６
７０μＳ／ｃｍという高い値を示し、水洗水として再使
用できなかったため、この水洗水をカチオン交換樹脂カ
ラムおよびアニオン交換樹脂カラムに通したところ、導
電率１０μＳ／ｃｍの水洗水が得られ、再使用可能な水
洗水とすることができた。Washing water from which emulsions and organic matter have been removed by the above method still contains alkali salts and has a conductivity of 1.6.
It showed a high value of 70 μS/cm and could not be reused as washing water, so when this washing water was passed through a cation exchange resin column and an anion exchange resin column, washing water with a conductivity of 10 μS/cm was obtained and could be reused. It was possible to use water for washing.
【００１６】比較のため限外濾過しない場合についても
実施した。その結果を表１に示す。なお、上記透過率は
、可視吸光計で５５０ｎｍにて測定した値で、この数値
が大きいほど乳化物の量が少ないことを示し、透過率１
００％は乳化物が見られないことを示す。また、ＣＯＤ
は、ＪＩＳ−Ｋ０１０２（１９８６）に記載の方法によ
り測定した値で、この数値が小さいほど有機物の量が少
ないことを示す。さらに、導電率は、電気化学計器製導
電率計ＡＯＬ−４０で測定した値である。For comparison, a test was also carried out without ultrafiltration. The results are shown in Table 1. The above transmittance is a value measured at 550 nm using a visible absorption spectrometer, and the larger the value, the smaller the amount of emulsion.
00% indicates that no emulsion is seen. Also, COD
is a value measured by the method described in JIS-K0102 (1986), and the smaller this value is, the smaller the amount of organic matter is. Furthermore, the conductivity is a value measured with a conductivity meter AOL-40 manufactured by Electrochemical Keiki.
【００１７】以上の水洗水循環フローの１形態を図１に
示した。One form of the above-mentioned washing water circulation flow is shown in FIG.
【００１８】[0018]
【表１】[Table 1]
【００１９】[0019]
【表２】[Table 2]
【００２０】[0020]
【発明の効果】本発明は、簡単な方法で、活性炭への有
機物負荷を大幅に低減することができ、活性炭の寿命を
伸ばし、活性炭の交換頻度を減らすと共に、活性炭処理
後の水洗水の有機物レベルをも低減し、良質な水洗水を
再生利用できる。[Effects of the Invention] The present invention can significantly reduce the organic matter load on activated carbon using a simple method, extend the life of activated carbon, reduce the frequency of replacing activated carbon, and reduce organic matter in water washed after activated carbon treatment. This also reduces the water level and allows high-quality flushing water to be recycled.
【図１】図１は、本発明の水洗水処理方法の１実施態様
を示したものである。FIG. 1 shows one embodiment of the washing water treatment method of the present invention.
１ 中空繊維状の限外濾過膜を用いた限外濾過器２
活性炭カラム
３ イオン交換樹脂カラム
４ 水洗槽
５ 水洗水循環経路1 Ultrafilter using hollow fiber ultrafiltration membrane 2
Activated carbon column 3 Ion exchange resin column 4 Washing tank 5 Washing water circulation path
Claims (2)
工程の、界面活性剤および／またはアルカリによる乳化
物を含む水洗水を処理して水洗工程に戻し、循環再使用
する方法において、この水洗水を、中空繊維状の限外濾
過膜で限外濾過した後に活性炭処理し、水洗工程に戻す
ことを特徴とする水洗水の処理方法。Claim 1. A method in which wash water containing an emulsion of a surfactant and/or alkali in a washing step of degreasing or flux cleaning is treated and returned to the washing step for circulation and reuse, comprising: A method for treating washing water, which comprises ultrafiltering using a hollow fiber ultrafiltration membrane, treating it with activated carbon, and returning the washing water to the washing step.
工程の、界面活性剤および／またはアルカリによる乳化
物を含む水洗水を処理して水洗工程に戻し、循環再使用
する方法において、この水洗水を、中空繊維状の限外濾
過膜で限外濾過した後に活性炭処理し、ついでイオン交
換樹脂処理し、水洗工程に戻すことを特徴とする水洗水
の処理方法。2. A method in which the washing water containing an emulsion of a surfactant and/or alkali in the washing step of degreasing or flux cleaning is treated and returned to the washing step for circulation and reuse, wherein the washing water is A method for treating washing water, which comprises ultrafiltering using a hollow fiber ultrafiltration membrane, treating it with activated carbon, then treating it with an ion exchange resin, and returning it to the washing step.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03008738A JP3128249B2 (en) | 1991-01-28 | 1991-01-28 | Wash water treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03008738A JP3128249B2 (en) | 1991-01-28 | 1991-01-28 | Wash water treatment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04244289A true JPH04244289A (en) | 1992-09-01 |
| JP3128249B2 JP3128249B2 (en) | 2001-01-29 |
Family
ID=11701292
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03008738A Expired - Fee Related JP3128249B2 (en) | 1991-01-28 | 1991-01-28 | Wash water treatment method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3128249B2 (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06254595A (en) * | 1993-03-01 | 1994-09-13 | Daicel Chem Ind Ltd | Method for purifying surface flow water |
| EP0647597A1 (en) * | 1993-10-12 | 1995-04-12 | AEROSPATIALE Société Nationale Industrielle | Installation for treating and recycling washing water of a washing machine |
| JPH07204591A (en) * | 1994-01-24 | 1995-08-08 | Arakawa Chem Ind Co Ltd | Cleaning system |
| WO2006076446A2 (en) * | 2005-01-11 | 2006-07-20 | 3M Innovative Properties Company | Treatment of wastewater streams containing surfactants |
| JP2020507466A (en) * | 2017-02-13 | 2020-03-12 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ Ｇｅｓｅｌｌｓｃｈａｆｔ ｍｉｔ ｂｅｓｃｈｒａｅｎｋｔｅｒ Ｈａｆｔｕｎｇ | Method for producing ultrapure water |
| US11629071B2 (en) | 2017-02-13 | 2023-04-18 | Merck Patent Gmbh | Method for producing ultrapure water |
| US11807556B2 (en) | 2017-02-13 | 2023-11-07 | Merck Patent Gmbh | Method for producing ultrapure water |
| US11820676B2 (en) | 2017-02-13 | 2023-11-21 | Merck Patent Gmbh | Method for producing ultrapure water |
| CN117361683A (en) * | 2023-12-07 | 2024-01-09 | 陕西金河洗涤有限公司 | Washing wastewater treatment device |
-
1991
- 1991-01-28 JP JP03008738A patent/JP3128249B2/en not_active Expired - Fee Related
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH06254595A (en) * | 1993-03-01 | 1994-09-13 | Daicel Chem Ind Ltd | Method for purifying surface flow water |
| EP0647597A1 (en) * | 1993-10-12 | 1995-04-12 | AEROSPATIALE Société Nationale Industrielle | Installation for treating and recycling washing water of a washing machine |
| FR2711129A1 (en) * | 1993-10-12 | 1995-04-21 | Aerospatiale | Water treatment and recycling station for washing a washing machine. |
| JPH07204591A (en) * | 1994-01-24 | 1995-08-08 | Arakawa Chem Ind Co Ltd | Cleaning system |
| JP3070379B2 (en) * | 1994-01-24 | 2000-07-31 | 荒川化学工業株式会社 | Cleaning system |
| WO2006076446A2 (en) * | 2005-01-11 | 2006-07-20 | 3M Innovative Properties Company | Treatment of wastewater streams containing surfactants |
| WO2006076446A3 (en) * | 2005-01-11 | 2006-12-07 | 3M Innovative Properties Co | Treatment of wastewater streams containing surfactants |
| JP2020507466A (en) * | 2017-02-13 | 2020-03-12 | メルク パテント ゲゼルシャフト ミット ベシュレンクテル ハフツングＭｅｒｃｋ Ｐａｔｅｎｔ Ｇｅｓｅｌｌｓｃｈａｆｔ ｍｉｔ ｂｅｓｃｈｒａｅｎｋｔｅｒ Ｈａｆｔｕｎｇ | Method for producing ultrapure water |
| US11629071B2 (en) | 2017-02-13 | 2023-04-18 | Merck Patent Gmbh | Method for producing ultrapure water |
| US11807556B2 (en) | 2017-02-13 | 2023-11-07 | Merck Patent Gmbh | Method for producing ultrapure water |
| US11820676B2 (en) | 2017-02-13 | 2023-11-21 | Merck Patent Gmbh | Method for producing ultrapure water |
| CN117361683A (en) * | 2023-12-07 | 2024-01-09 | 陕西金河洗涤有限公司 | Washing wastewater treatment device |
| CN117361683B (en) * | 2023-12-07 | 2024-03-08 | 陕西金河洗涤有限公司 | Washing wastewater treatment device |
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|---|---|
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