JPH07189000A - Treatment of waste aluminum material washing water after anodization - Google Patents
Treatment of waste aluminum material washing water after anodizationInfo
- Publication number
- JPH07189000A JPH07189000A JP33539793A JP33539793A JPH07189000A JP H07189000 A JPH07189000 A JP H07189000A JP 33539793 A JP33539793 A JP 33539793A JP 33539793 A JP33539793 A JP 33539793A JP H07189000 A JPH07189000 A JP H07189000A
- Authority
- JP
- Japan
- Prior art keywords
- aluminum
- water
- washing
- aluminum material
- cleaning
- 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
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、アルミニウム又はア
ルミニウム合金からなるアルミニウム材の表面処理の１
つである陽極酸化処理工程において、この陽極酸化処理
の後に行われる水洗操作から生じる洗浄排水の処理方法
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a surface treatment of an aluminum material made of aluminum or an aluminum alloy.
The present invention relates to a method of treating cleaning wastewater resulting from a washing operation performed after the anodizing treatment in the third anodizing treatment step.
【０００２】[0002]
【従来の技術】アルミニウム又はアルミニウム合金から
なるアルミニウム材は、船舶、車両、機械等の種々の部
品や、サッシ等の建築材料、電気製品、事務用品等の多
くの分野で利用されており、その際に、その耐蝕性を改
善するために、表面にアルマイトと称される陽極酸化皮
膜を形成する表面処理が行われている。2. Description of the Related Art Aluminum materials made of aluminum or aluminum alloys are used in various fields such as various parts of ships, vehicles and machines, building materials such as sashes, electric products, office supplies and the like. At this time, in order to improve its corrosion resistance, a surface treatment for forming an anodized film called alumite on the surface is performed.
【０００３】ところで、この陽極酸化処理においては、
一般に、酸性の電解液、特に１０〜２０％程度の濃度の
硫酸が用いられ、その際の電解条件にもよるが、通常、
５〜１０ｇ／ｍ2 のアルミニウム材の溶解が起こり、こ
れが電解液浴中に蓄積する。そして、この電解液浴中に
溶解したアルミニウムが蓄積すると、製品表面の品質に
悪影響を及ぼし、形成される皮膜の性質が劣化したり、
あるいは、耐久性が低下する等の問題を引き起こす。By the way, in this anodizing treatment,
Generally, an acidic electrolytic solution, particularly sulfuric acid having a concentration of about 10 to 20% is used.
Dissolution of 5-10 g / m 2 of aluminum material occurs, which accumulates in the electrolyte bath. Then, when the dissolved aluminum accumulates in the electrolytic solution bath, the quality of the product surface is adversely affected, and the properties of the formed film are deteriorated,
Alternatively, it causes a problem such as reduced durability.
【０００４】このため、陽極酸化処理に用いる電解液浴
については、一定の面積のアルミニウム材の表面処理を
行い、あるいは、一定時間のアルミニウム材の表面処理
を行って電解液中のアルミニウム濃度がある一定の値、
通常はアルミニウム１５〜３５ｇ／リットル程度に達す
ると、これを老化電解液として抜き出し、新しい電解液
に更新することが行われている。Therefore, in the electrolytic solution bath used for the anodizing treatment, the surface treatment of the aluminum material having a certain area is performed, or the surface treatment of the aluminum material is performed for a certain period of time so that the aluminum concentration in the electrolytic solution varies. Constant value,
Usually, when the amount of aluminum reaches about 15 to 35 g / liter, this is taken out as an aged electrolytic solution and replaced with a new electrolytic solution.
【０００５】そして、この更新のために系外に抜き出さ
れた老化電解液は、通常、硫酸アルミニウムを１００〜
２２０ｇ／リットル程度の範囲で、また、遊離硫酸を１
２０〜１８０ｇ／リットル程度の範囲で溶解している。
そこで、最近では、この老化電解液をアルミニウムの含
水塩晶析による硫酸再生法や、懸濁液の中和凝集剤への
加工方法、その他の方法で化学的に有資源化することが
提唱されている。The aged electrolytic solution taken out of the system for this renewal usually contains aluminum sulfate of 100 to 100%.
In the range of about 220 g / l, 1% of free sulfuric acid is added.
It is dissolved in the range of about 20 to 180 g / liter.
Therefore, recently, it has been proposed to chemically recycle this aged electrolytic solution by a sulfuric acid regeneration method by hydrated salt crystallization of aluminum, a processing method of a suspension into a neutralization coagulant, and other methods. ing.
【０００６】しかしながら、通常この陽極酸化処理の後
に電解浴槽から引き上げられたアルミニウム材につい
て、洗浄水で洗浄することが行われており、この際には
多量の洗浄排水が発生し、そしてこの洗浄排水中には低
濃度、通常は老化電解液の１／４０〜１／３０程度のア
ルミニウム、硫酸アルミニウム、遊離硫酸等が溶解して
いる。However, the aluminum material pulled up from the electrolytic bath after this anodic oxidation treatment is usually washed with washing water, in which case a large amount of washing drainage is generated, and this washing drainage is generated. A low concentration, usually about 1/40 to 1/30 of the aging electrolyte, aluminum, aluminum sulfate, free sulfuric acid and the like are dissolved therein.
【０００７】この洗浄排水は、それが低濃度であるた
め、これを化学的に有資源化する有利な方法がなく、通
常はアルカリで中和し、この際に発生した中和スラッジ
を捕集した後に廃水として廃棄することが行われてい
る。しかしながら、生成する中和スラッジは、含水ゲル
状の水酸化アルミニウムであり、多量の水分を含んでい
てしかも脱水し難く、その処分の極めて厄介なものであ
り、この中和スラッジの処理が経済的に大きな負担にな
っている。Since this cleaning wastewater has a low concentration, there is no advantageous method for chemically converting it into a resource, and it is usually neutralized with an alkali, and the neutralized sludge generated at this time is collected. After that, it is disposed as waste water. However, the neutralized sludge produced is aluminum hydroxide in the form of hydrous gel, contains a large amount of water, is difficult to dehydrate, and is extremely troublesome to dispose of. Therefore, the treatment of this neutralized sludge is economical. It is a heavy burden on us.
【０００８】加えて、陽極酸化処理後のアルミニウム材
の水洗には、次工程の着色、塗装、封孔等のためにかな
り厳密な洗浄が要求され、このために洗浄水の使用量に
ついても全アルミニウム材表面処理工程で要する水の使
用量の約１／２にも達し、用水を巡る環境問題やコスト
の点から、この水の使用量を節減する要請も次第に高ま
っている。In addition, washing the aluminum material after the anodizing treatment requires fairly rigorous washing for coloring, painting, sealing, etc. in the next step. The amount of water used in the aluminum material surface treatment step has reached about half, and there is a growing demand for reducing the amount of water used in view of environmental problems and cost of water.
【０００９】[0009]
【発明が解決しようとする課題】本発明者らは、かかる
観点に鑑み、陽極酸化処理後にアルミニウム材を水洗し
た際に回収される低濃度の洗浄排水を効率良く再生し、
再び洗浄水として循環使用すると共に、高濃度に回収さ
れた濃縮液についてはこれを有資源化する方法について
鋭意研究を重ねた結果、低濃度の洗浄排水を逆浸透法で
濃縮することにより目的を達成できることを見出し、本
発明を完成した。In view of such a viewpoint, the present inventors efficiently regenerate the low-concentration cleaning wastewater recovered when the aluminum material is washed with water after the anodizing treatment,
As a result of conducting intensive research on how to recycle the concentrated water recovered as high-concentration and to recycle the concentrated liquid as a resource, as a result of concentrating the low-concentration cleaning wastewater by the reverse osmosis method, The inventors have found that they can be achieved and completed the present invention.
【００１０】従って、本発明の目的は、硫酸を主成分と
する電解液でアルミニウム又はアルミニウム合金からな
るアルミニウム材を陽極酸化した後のアルミニウム材を
洗浄水で洗浄した際に発生する洗浄排水を効率良く処理
し、水についてはこれを洗浄水として再使用可能にする
と共に、溶解成分についてはこれを有資源化することが
できるアルミニウム材の陽極酸化処理後の洗浄排水の処
理方法を提供することにある。Therefore, an object of the present invention is to efficiently wash the cleaning waste water generated when the aluminum material made of aluminum or an aluminum alloy is anodized with an electrolytic solution containing sulfuric acid as a main component and then the aluminum material is washed with cleaning water. To provide a method for treating cleaning wastewater after anodizing of an aluminum material, which can be treated well and can be reused as cleaning water for water, and can be used as a resource for dissolved components. is there.
【００１１】[0011]
【課題を解決するための手段】すなわち、本発明は、硫
酸を主成分とする電解液でアルミニウム又はアルミニウ
ム合金からなるアルミニウム材を陽極酸化した後のアル
ミニウム材を洗浄水で洗浄した際に発生する洗浄排水を
処理するに当り、この洗浄排水を逆浸透法により濃縮
し、回収された浸透液を洗浄水として循環使用すると共
に、回収された濃縮液を電解液の一部又は全部として循
環使用するアルミニウム材の陽極酸化処理後の洗浄排水
の処理方法である。Means for Solving the Problems That is, the present invention occurs when an aluminum material made of aluminum or an aluminum alloy is anodized with an electrolytic solution containing sulfuric acid as a main component, and then the aluminum material is washed with washing water. When treating the cleaning wastewater, the cleaning wastewater is concentrated by the reverse osmosis method, and the recovered permeate is circulated and used as cleaning water, and the recovered concentrated solution is circulated and used as a part or all of the electrolytic solution. This is a method for treating cleaning wastewater after anodizing an aluminum material.
【００１２】本発明方法において、その処理の対象とな
る洗浄排水は、アルミニウム材の表面処理における陽極
酸化工程で陽極酸化処理され、その電解槽から引き上げ
られたアルミニウム材を洗浄水で水洗した際に回収され
る洗浄排水である。そして、この洗浄排水には、アルミ
ニウム材が電解槽から引き上げられて水洗工程の水洗槽
に移される際にこのアルミニウム材に付着して持ち出さ
れた電解液が溶解しており、結果として電解液由来のア
ルミニウム、硫酸アルミニウム、遊離硫酸等が溶解して
いる。In the method of the present invention, the cleaning wastewater to be treated is anodized in the anodizing step in the surface treatment of the aluminum material, and when the aluminum material pulled up from the electrolytic cell is washed with cleaning water. This is the collected cleaning wastewater. Then, in this cleaning drainage, the electrolytic solution adhered to the aluminum material when the aluminum material is pulled up from the electrolytic bath and transferred to the washing bath in the washing step is dissolved, and as a result, the electrolytic solution is derived. Aluminum, aluminum sulfate, free sulfuric acid, etc. are dissolved.
【００１３】ところで、上記水洗工程でのアルミニウム
材の洗浄は、一般に、そこで要求される高い洗浄度を達
成し、かつ、その際に使用される洗浄水の節減のため、
通常は、３〜４個程度の水洗槽を直列に接続し、これら
の水洗槽にはアルミニウム材の移送方向について下流の
水洗槽から上流の水洗槽へと洗浄水を連続的に流し、電
解槽から引き上げられた直後のアルミニウム材を最上流
の水洗槽から、新鮮な洗浄水が供給される最下流の水洗
槽へと順次向流的に移動させながら水洗し、ここで洗い
落とされた電解液を溶解する洗浄排水を上記最上流の水
洗槽から回収することが行われており、この最上流の水
洗槽から回収される洗浄排水には電解槽から持ち出され
た電解液のほとんど全てが溶解されている。By the way, the washing of the aluminum material in the above-mentioned washing step generally achieves a high degree of washing required therein, and in order to save the washing water used at that time,
Usually, about 3 to 4 washing tanks are connected in series, and the washing water is continuously flowed from the washing tank on the downstream side to the washing tank on the upstream side in the washing direction of the aluminum material. Immediately after being pulled up from the aluminum material, the aluminum material is washed countercurrently from the most upstream washing tank to the most downstream washing tank to which fresh washing water is supplied, while the electrolytic solution is washed off. It is practiced to recover the cleaning drainage that dissolves the above-mentioned most upstream water washing tank, and almost all of the electrolytic solution brought out of the electrolytic bath is dissolved in the cleaning drainage collected from this most upstream water washing tank. ing.
【００１４】そして、この最下流の水洗槽から回収され
る洗浄排水に溶解している硫酸アルミニウム、遊離硫酸
等の濃度は、目標とする洗浄の程度、洗浄水の使用量、
水洗槽の槽数、水洗槽での攪拌効率等により左右される
が、アルミニウム材１ｍ2 当り２〜５リットルの洗浄水
を用いる水洗工程の場合、そこからの洗浄排水は、通
常、硫酸アルミニウムが２〜８ｇ／リットル程度、遊離
硫酸が３〜１０ｇ／リットル程度それぞれ溶解してい
る。The concentration of aluminum sulfate, free sulfuric acid, etc. dissolved in the cleaning waste water collected from the water washing tank at the most downstream side is the target degree of cleaning, the amount of cleaning water used,
Although it depends on the number of washing tanks, the stirring efficiency in the washing tank, etc., in the case of a washing step using 2 to 5 liters of washing water per 1 m 2 of aluminum material, the washing drainage from the washing water is usually aluminum sulfate. About 2 to 8 g / liter and about 3 to 10 g / liter of free sulfuric acid are dissolved.
【００１５】本発明方法においては、ここで回収される
洗浄排水を逆浸透法により濃縮し、回収された浸透液を
洗浄水として循環使用すると共に、回収された濃縮液を
電解液の一部又は全部として循環使用する。In the method of the present invention, the cleaning wastewater collected here is concentrated by the reverse osmosis method, the recovered permeate is circulated and used as cleaning water, and the recovered concentrated solution is used as a part of the electrolytic solution. Recycle all as a whole.
【００１６】そして、この洗浄排水の逆浸透法による濃
縮に使用する逆浸透膜としては、例えば、酢酸セルロー
ス系、ポリアミド系等の非対称膜や複合膜等が使用で
き、その形状についても、例えば、スパイラル型、中空
糸型、チューブ型等のものを使用することができる。As the reverse osmosis membrane used for concentrating the wash effluent by the reverse osmosis method, for example, an asymmetric membrane such as a cellulose acetate type or a polyamide type or a composite membrane can be used. A spiral type, a hollow fiber type, a tube type and the like can be used.
【００１７】また、この逆浸透法における濃縮の程度
は、得られる濃縮液を電解液の一部として循環使用する
ことから、好ましくはこの濃縮液中の遊離硫酸濃度と陽
極酸化工程で使用する電解液の浴更新量とを目安に、洗
浄排水の遊離硫酸濃度、使用する逆浸透膜の寿命、逆浸
透法の操作エネルギーコスト等を考慮して制御するのが
よい。The degree of concentration in the reverse osmosis method is preferably that the obtained concentrated solution is circulated and used as a part of the electrolytic solution. Therefore, the concentration of free sulfuric acid in the concentrated solution and the electrolysis used in the anodizing step are preferable. It is advisable to control the amount of free sulfuric acid in the cleaning wastewater, the life of the reverse osmosis membrane to be used, the operating energy cost of the reverse osmosis method, etc., taking into consideration the liquid bath renewal amount.
【００１８】例えば、１日当り１００００ｍ2 のアルミ
ニウム材を浴更新量約４ｍ3 の電解液を用いて陽極酸化
処理し、この陽極酸化処理後のアルミニウム材を約３５
ｍ3／日の洗浄水で水洗する場合には、逆浸透法による
濃縮で得られる濃縮液を３．５ｍ3 とし、残りの０．５
ｍ3 の範囲で濃縮液の遊離硫酸濃度を調整して新しい電
解液を建浴するのがよく、この際の濃縮の程度は概ね１
０倍程度となる。なおここで、電解液の建浴のために
は、工業用硫酸を用いることができることは勿論、陽極
酸化工程の老化電解液から濃縮−冷却法、イオン交換
法、拡散透析法、電解透析法等の方法で回収された回収
硫酸を用いて行うこともできる。For example, an aluminum material of 10,000 m 2 per day is anodized using an electrolyte solution having a bath renewal amount of about 4 m 3 , and the aluminum material after this anodization is about 35
When washing with m 3 / day of washing water, the concentration obtained by concentration by the reverse osmosis method is 3.5 m 3 , and the remaining 0.5
It is advisable to adjust the concentration of free sulfuric acid in the concentrated solution within a range of m 3 to prepare a new electrolyte solution, and the concentration at this time is about 1
It will be about 0 times. Here, industrial sulfuric acid can be used for the construction bath of the electrolytic solution, as well as from the aging electrolytic solution in the anodizing step to a concentration-cooling method, an ion exchange method, a diffusion dialysis method, an electrolytic dialysis method, etc. It is also possible to use the recovered sulfuric acid recovered by the above method.
【００１９】一方、この逆浸透法による濃縮で得られる
浸透液は、洗浄排水中の溶質をほとんど含まず、そのま
ま水洗工程での洗浄水として使用可能なものであり、洗
浄水として水洗工程に循環して再使用する。上記の例に
おいて、回収される浸透液は、その液量が概ね３〜３．
５ｍ3 ／日であり、硫酸アルミニウム濃度が３０〜８０
ｇ／リットル程度、遊離硫酸濃度が４０〜１００ｇ／リ
ットル程度である。On the other hand, the osmotic liquid obtained by the concentration by the reverse osmosis method contains almost no solute in the washing waste water and can be used as it is as washing water in the washing step, and is circulated to the washing step as washing water. And reuse. In the above example, the amount of the permeated liquid to be recovered is approximately 3 to 3.
5m 3 / day, aluminum sulfate concentration is 30-80
g / liter, and free sulfuric acid concentration is about 40 to 100 g / liter.
【００２０】また、上記の例において、従来どおりに洗
浄排水を中和処理する場合には、その洗浄排水約３５ｍ
3 ／日を中和処理して約２５０〜３００ｋｇ／日の含水
ゲル状水酸化アルミニウムスラッジが発生し、その処理
に多大なスラッジ処理コストを要するほか、この中和用
アルカリとして水酸化ナトリウム約２００ｋｇ／日（１
００％換算）を消費し、更に、電解液由来の硫酸が約２
５０ｋｇ／日以上、また、水が３５ｍ3 ／日以上も放流
されることになるが、本発明方法によれば、これらの浪
費を全て解消することができる。Further, in the above example, when the washing wastewater is neutralized as usual, the washing wastewater is about 35 m.
Neutralization treatment of 3 / day produces about 250-300 kg / day of hydrous gel-like aluminum hydroxide sludge, which requires a great sludge treatment cost. About 200 kg of sodium hydroxide is used as the neutralizing alkali. / Day (1
(100% conversion), and the sulfuric acid derived from the electrolyte solution is about 2
Although 50 kg / day or more and water of 35 m 3 / day or more will be discharged, according to the method of the present invention, all of these wastes can be eliminated.
【００２１】[0021]
【実施例】以下、実施例に基づいて本発明方法を具体的
に説明する。遊離硫酸４．６ｇ／リットル及び硫酸アル
ミニウム３．６ｇ／リットルを含む陽極酸化処理後のア
ルミニウム材の洗浄排水４４０リットルについて、逆浸
透装置〔エースエンジニアリング（株）製ＯＲ・ＳＷ−
９型〕を用い、給水圧力１０．３ｋｇ／ｃｍ2 の条件で
逆浸透処理を行い、濃縮液４６リットルと浸透液３９４
リットルとを回収した。EXAMPLES The method of the present invention will be specifically described below based on examples. About 440 liters of washing drainage of aluminum material after anodizing treatment containing 4.6 g / liter of free sulfuric acid and 3.6 g / liter of aluminum sulfate, a reverse osmosis device [OR-SW-manufactured by Ace Engineering Co., Ltd.]
9 type], reverse osmosis treatment was performed under the condition of water supply pressure of 10.3 kg / cm 2 , and 46 liters of concentrate and 394
And liters were collected.
【００２２】回収された濃縮液は、その遊離硫酸濃度が
４４ｇ／リットルであり、その硫酸アルミニウム濃度が
３４ｇ／リットルであった。この濃縮液４６リットルに
９８％硫酸６．１ｋｇと水１．５リットルを添加し、５
０リットルの更新用電解液〔遊離硫酸濃度：１６０ｇ／
リットル、硫酸アルミニウム（アルミニウム換算）３１
ｇ／リットル〕を調製した。調製した更新用電解液５０
リットルを陽極酸化工程の電解槽に供給し、アルミニウ
ム材の陽極酸化処理を行った結果、通常と同様の良好な
陽極酸化処理を行うことができた。The recovered concentrated solution had a free sulfuric acid concentration of 44 g / liter and an aluminum sulfate concentration of 34 g / liter. To 46 liters of this concentrated solution, 6.1 kg of 98% sulfuric acid and 1.5 liters of water were added.
0 liter renewal electrolyte [concentration of free sulfuric acid: 160 g /
Liter, aluminum sulfate (aluminum equivalent) 31
g / liter] was prepared. Prepared renewal electrolyte 50
As a result of supplying 1 liter of the aluminum material to the electrolytic cell in the anodizing process and anodizing the aluminum material, the same good anodizing treatment as usual could be performed.
【００２３】また、回収された浸透液は、その遊離硫酸
濃度が０．４ｇ／リットルであって、その硫酸アルミニ
ウム濃度が０．３ｇ／リットルであり、そのまま水洗工
程の洗浄水として使用可能なものであることが判明し
た。The recovered permeate has a free sulfuric acid concentration of 0.4 g / liter and an aluminum sulfate concentration of 0.3 g / liter and can be used as it is as washing water in the washing step. It turned out to be
【００２４】[0024]
【発明の効果】本発明方法によれば、陽極酸化処理後の
アルミニウム材を洗浄水で洗浄した際に発生する洗浄排
水を厄介な含水ゲル状水酸化アルミニウムスラッジを発
生させることなく効率良く処理することができるほか、
回収した水についてはこれを洗浄水として再使用するこ
とができ、また、洗浄排水中に溶解されている遊離硫酸
や硫酸アルミニウム等の陽極酸化処理由来の溶解成分に
ついてはこれを有資源化することができ、本発明方法は
環境的にも経済的にも工業上極めて有用なものである。EFFECTS OF THE INVENTION According to the method of the present invention, the cleaning drainage generated when the aluminum material after the anodizing treatment is washed with the cleaning water is efficiently treated without generating troublesome hydrous gel-like aluminum hydroxide sludge. Besides being able to
The recovered water can be reused as cleaning water, and the dissolved components derived from anodizing treatment such as free sulfuric acid and aluminum sulfate dissolved in the cleaning wastewater should be made into a resource. Therefore, the method of the present invention is extremely useful industrially both environmentally and economically.
───────────────────────────────────────────────────── フロントページの続き (72)発明者 杉山 昇 静岡県庵原郡蒲原町蒲原１丁目34番１号 株式会社日軽技研内 (72)発明者 田中 義朗 東京都港区三田３丁目13番12号 日本軽金 属株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Noboru Sugiyama 1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Nipparu Giken Co., Ltd. (72) Yoshiro Tanaka 3-13-12 Mita, Minato-ku, Tokyo No. Nippon Light Metal Co., Ltd.
Claims (2)
ム又はアルミニウム合金からなるアルミニウム材を陽極
酸化した後のアルミニウム材を洗浄水で洗浄した際に発
生する洗浄排水を処理するに当り、この洗浄排水を逆浸
透法により濃縮し、回収された浸透液を洗浄水として循
環使用すると共に、回収された濃縮液を電解液の一部又
は全部として循環使用することを特徴とする陽極酸化処
理後のアルミニウム材の洗浄排水処理方法。1. A method for treating cleaning wastewater generated when an aluminum material made of aluminum or an aluminum alloy is anodized with an electrolytic solution containing sulfuric acid as a main component and then washed with cleaning water. Wastewater is concentrated by the reverse osmosis method, and the recovered osmotic solution is circulated and used as washing water, and the recovered concentrated solution is circulated and used as a part or all of the electrolytic solution. Cleaning and treatment of aluminum materials.
液の遊離硫酸濃度が４０〜１００ｇ／リットルである請
求項１記載の陽極酸化処理後のアルミニウム材の洗浄排
水処理方法。2. The method for cleaning and treating wastewater of an aluminum material after anodization according to claim 1, wherein the concentration of free sulfuric acid in the concentrated liquid recovered by concentration by the reverse osmosis method is 40 to 100 g / liter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33539793A JP3161494B2 (en) | 1993-12-28 | 1993-12-28 | Method for cleaning and draining aluminum material after anodizing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP33539793A JP3161494B2 (en) | 1993-12-28 | 1993-12-28 | Method for cleaning and draining aluminum material after anodizing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH07189000A true JPH07189000A (en) | 1995-07-25 |
| JP3161494B2 JP3161494B2 (en) | 2001-04-25 |
Family
ID=18288092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP33539793A Expired - Fee Related JP3161494B2 (en) | 1993-12-28 | 1993-12-28 | Method for cleaning and draining aluminum material after anodizing |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3161494B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001079589A1 (en) * | 2000-04-13 | 2001-10-25 | Obducat Aktiebolag | Method in and apparatus for etching or plating of substrates |
| EP1884278A1 (en) * | 2006-07-24 | 2008-02-06 | ATOTECH Deutschland GmbH | Apparatus and method for rinsing of liquid from work pieces |
| KR101469844B1 (en) * | 2013-05-29 | 2014-12-08 | (주)제이스 | Cleaner Production System in Anodizing and Operating method thereof |
| JP6290503B1 (en) * | 2017-08-31 | 2018-03-07 | 株式会社スイレイ | Surface treatment equipment, wastewater treatment equipment, and wastewater treatment method |
-
1993
- 1993-12-28 JP JP33539793A patent/JP3161494B2/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001079589A1 (en) * | 2000-04-13 | 2001-10-25 | Obducat Aktiebolag | Method in and apparatus for etching or plating of substrates |
| EP1884278A1 (en) * | 2006-07-24 | 2008-02-06 | ATOTECH Deutschland GmbH | Apparatus and method for rinsing of liquid from work pieces |
| KR101469844B1 (en) * | 2013-05-29 | 2014-12-08 | (주)제이스 | Cleaner Production System in Anodizing and Operating method thereof |
| JP6290503B1 (en) * | 2017-08-31 | 2018-03-07 | 株式会社スイレイ | Surface treatment equipment, wastewater treatment equipment, and wastewater treatment method |
| JP2019044226A (en) * | 2017-08-31 | 2019-03-22 | 株式会社スイレイ | Surface treatment facility, wastewater treatment facility, and wastewater processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3161494B2 (en) | 2001-04-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5965009A (en) | Method of producing acid water and electrolytic cell therefor | |
| US5091070A (en) | Method of continuously removing and obtaining ethylene diamine tetracetic acid (edta) from the process water of electroless copper plating | |
| JPH10128338A (en) | Method and device for preventing scale from being deposited in electric regeneration type continuous desalting apparatus | |
| US4306946A (en) | Process for acid recovery from waste water | |
| JPS60106583A (en) | Method of treating aqueous flow containing precipitable material and acid and/or base | |
| KR880012254A (en) | Method for removing I-valent ions from ZnSO ₄ electrolyte by electrodialysis | |
| EP0472705B1 (en) | Method and apparatus for treatment of liquid photographic processing wastes | |
| CN102115272A (en) | Processing and reusing method and device for waste water of aluminium oxidation washing | |
| US3806436A (en) | Concentration of electrolyte from dilute washings | |
| JPH07189000A (en) | Treatment of waste aluminum material washing water after anodization | |
| CN105330102A (en) | Improved DSD acid production technology | |
| JPH09271781A (en) | Method of removing nitrogen from waste water | |
| US4684453A (en) | Purification of dye baths | |
| CN201785261U (en) | Treatment and recovery device for aluminum oxidation rinsing wastewater | |
| US20070256940A1 (en) | Device and Method for Removing Foreign Matter from Process Solutions | |
| US4895627A (en) | Method of electrolytic surface treatment of aluminum supports for planographic printing plates | |
| EP1337472B1 (en) | Process and apparatus for removal and destruction of dissolved nitrate. | |
| JPH07256297A (en) | Purification treatment of livestock excretion | |
| CN111620502A (en) | Method and device for recycling soda water produced by nanofiltration of printing and dyeing wastewater | |
| RU2088537C1 (en) | Method of recuperation reverse-osmosis purification of waste water to remove heavy metal ions | |
| WO1995023880A1 (en) | Treatement of electrolyte solutions | |
| JPS61261488A (en) | Electrolyzing method for alkaline metallic salt of amino acid | |
| CN216946614U (en) | High salt effluent disposal system | |
| JP3555348B2 (en) | Method for recovering valuable resources in wastewater from washing tank in coloring process of Al member | |
| JPS602393B2 (en) | Amino acid production method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080223 Year of fee payment: 7 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090223 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090223 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (prs date is renewal date of database) |
Year of fee payment: 9 Free format text: PAYMENT UNTIL: 20100223 |
|
| LAPS | Cancellation because of no payment of annual fees |