JPH01132721A - Dry process treatment of waste liquid of electroplating - Google Patents
Dry process treatment of waste liquid of electroplatingInfo
- Publication number
- JPH01132721A JPH01132721A JP62290082A JP29008287A JPH01132721A JP H01132721 A JPH01132721 A JP H01132721A JP 62290082 A JP62290082 A JP 62290082A JP 29008287 A JP29008287 A JP 29008287A JP H01132721 A JPH01132721 A JP H01132721A
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- electroplating
- gas
- dryer
- plating
- 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
- 239000002699 waste material Substances 0.000 title claims abstract description 44
- 239000007788 liquid Substances 0.000 title claims abstract description 38
- 238000009713 electroplating Methods 0.000 title claims abstract description 24
- 238000001035 drying Methods 0.000 title description 2
- 239000007921 spray Substances 0.000 claims abstract description 19
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 7
- 238000001704 evaporation Methods 0.000 claims abstract description 3
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 28
- 239000011701 zinc Substances 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 8
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 5
- QELJHCBNGDEXLD-UHFFFAOYSA-N nickel zinc Chemical compound [Ni].[Zn] QELJHCBNGDEXLD-UHFFFAOYSA-N 0.000 claims description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims 2
- NWONKYPBYAMBJT-UHFFFAOYSA-L zinc sulfate Chemical class [Zn+2].[O-]S([O-])(=O)=O NWONKYPBYAMBJT-UHFFFAOYSA-L 0.000 claims 1
- 238000007747 plating Methods 0.000 abstract description 20
- 239000013078 crystal Substances 0.000 abstract description 12
- 229910052751 metal Inorganic materials 0.000 abstract description 10
- 239000002184 metal Substances 0.000 abstract description 10
- 150000002739 metals Chemical class 0.000 abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 7
- 239000000428 dust Substances 0.000 abstract description 4
- -1 for example Substances 0.000 abstract description 4
- 238000002485 combustion reaction Methods 0.000 abstract description 2
- 239000000446 fuel Substances 0.000 abstract description 2
- 238000002425 crystallisation Methods 0.000 abstract 1
- 230000008025 crystallization Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 8
- 239000000843 powder Substances 0.000 description 8
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 238000012545 processing Methods 0.000 description 5
- 150000002500 ions Chemical class 0.000 description 3
- 238000006386 neutralization reaction Methods 0.000 description 3
- 238000003672 processing method Methods 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000004480 active ingredient Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000011347 resin Substances 0.000 description 2
- 229920005989 resin Polymers 0.000 description 2
- 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 description 1
- 239000004484 Briquette Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 238000005246 galvanizing Methods 0.000 description 1
- 239000011491 glass wool Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- KFZAUHNPPZCSCR-UHFFFAOYSA-N iron zinc Chemical compound [Fe].[Zn] KFZAUHNPPZCSCR-UHFFFAOYSA-N 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000003472 neutralizing effect Effects 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000002966 varnish Substances 0.000 description 1
Classifications
-
- Y02W30/54—
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、電気めっき廃液、の乾式処理法、特に低温ス
プレードライヤーを利用した電気めっき廃液の乾式処理
法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a dry treatment method for electroplating waste liquid, and particularly to a dry treatment method for electroplating waste liquid using a low-temperature spray dryer.
（従来の技術）
従来にあっても、純亜鉛めっき、亜鉛合金めっき等を行
う電気めっき設備の操業中、めっき液の老化による入れ
換えのため、空気酸化による三価の鉄イオン（Ｆｅ ’
°）等の不純物の濃縮防止のため、めっき液を一部廃液
として系外にパージしている。(Prior art) Conventionally, during the operation of electroplating equipment that performs pure zinc plating, zinc alloy plating, etc., trivalent iron ions (Fe'
In order to prevent the concentration of impurities such as
しかし、かかる廃液は例えばＰＨ−２と強酸であるため
、アルカリ添加による中和、中和スラリの処理等、高価
な操作を経て廃棄していた。そのような廃液には有価金
属（Ｚｎ、 Ｎｔ、 Ｃｒ等）が多く含まれているが、
それらもそのま−廃棄せざるを得なかった。However, since such waste liquid is, for example, PH-2 and strong acid, it has been disposed of after undergoing expensive operations such as neutralization by adding alkali and treatment of neutralized slurry. Such waste liquid contains many valuable metals (Zn, Nt, Cr, etc.),
Those too had no choice but to be thrown away.
これまでにも、かかるめっき液廃液中の有効成分、およ
び有価金属の回収を目的として例えば特公昭５５−４８
５９３号公報などに見られるイオン交換樹脂によるめっ
き液再生法、特開昭６１−１０４１００号公報などに見
られる中和処理法による有価金属の回収法等多くの方法
が提案されている。Until now, for the purpose of recovering active ingredients and valuable metals from such plating solution waste, for example,
Many methods have been proposed, such as a method for regenerating a plating solution using an ion exchange resin as seen in Japanese Patent Application Laid-open No. 593, and a method for recovering valuable metals using a neutralization treatment method as seen in Japanese Patent Application Laid-open No. 104100/1983.
しかしながら、これらの方法はいずれも湿式処理法であ
り、処理操作が複雑となる。特に、イオン交換法では樹
脂劣化の問題、樹脂の再生を要することなど工程の複雑
さの問題等があり、多（の設備を必要とする。また、中
和法も中和剤を多量に必要とする等、工程も複雑である
。そのうえ、めっき廃液の系外パージは、平均時間当た
り２〜３ｍ”／Ｈ程度と少量であるため、その廃液処理
系の処理量が少ないことも効率を悪くしている原因の１
つである。However, all of these methods are wet processing methods, and the processing operations are complicated. In particular, the ion exchange method has problems with resin deterioration and the complexity of the process, such as the need to regenerate the resin, and requires a large amount of equipment.In addition, the neutralization method also requires a large amount of neutralizing agent. In addition, the plating waste liquid is purged outside the system in a small amount of about 2 to 3 m"/H per hour on average, so the processing volume of the waste liquid treatment system is small, which worsens efficiency. One of the reasons why
It is one.
（発明が解決しようとする問題点）
ここに、本発明の目的は、めっき廃液の湿式処理法の工
程の複雑さ、設備の複雑さをそれぞれ解消する、従来の
方式とは異なった簡便なめっき廃液処理法を提供するこ
とである。(Problems to be Solved by the Invention) The purpose of the present invention is to provide a simple plating method different from the conventional method, which eliminates the complexity of the process and the complexity of the equipment of the wet treatment method for plating waste liquid. An object of the present invention is to provide a waste liquid treatment method.
また、本発明の別の目的は、現状ではすべて廃棄されて
いる電気めっき廃液に含有されている有価金属、例えば
Ｚｎ、Ｎｉ等、さらにはＳＯＪ”−などの有効成分の資
源としての再利用を図る方法を提供することである。Another object of the present invention is to reuse as resources valuable metals such as Zn, Ni, etc., as well as active ingredients such as SOJ, which are currently completely discarded. The aim is to provide a method for achieving this goal.
本発明のさらに別の目的は、安価で容易な手段でもって
上述の目的達成をはかることのできる方法を提供するこ
とである。A further object of the present invention is to provide a method by which the above-mentioned objectives can be achieved by cheap and easy means.
（問題点を解決するための手段）
そこで、本発明者らは従来の方式が湿式であるため上述
のような各種欠点が見られるとの観点から、乾式による
処理を実現すべく各種の検討を重ねた。(Means for Solving the Problems) Therefore, the inventors of the present invention have conducted various studies in order to realize dry processing, considering that the conventional method is a wet method and has various drawbacks as described above. Layered.
ここに、本発明者らは、めっき廃液中のＺｎＳＯ４・７
Ｈ！Ｏは１００℃でＨｔｏを放出してＺｎ５Ｏａ ・
６ＨＪに、２００℃でｏｇｏを全量放出してＺｎ５Ｏ，
に、そして５００℃以上で完全に分解することに着目し
て、乾式法による処理法を種々実験して見て、例えば熱
ガス温度１５０℃の低温スプレードライヤーによってめ
っき液の廃液の乾式処理が可能になることを知見し、本
発明を完成した。Here, the present inventors discovered that ZnSO4.7 in the plating waste solution
H! O releases Hto at 100°C to form Zn5Oa ・
In 6HJ, all ogo was released at 200°C to produce Zn5O,
Focusing on the fact that it decomposes completely at temperatures above 500°C, we have conducted various experiments on dry processing methods and found that, for example, it is possible to dry process plating solution waste using a low-temperature spray dryer with a hot gas temperature of 150°C. The present invention was completed based on the knowledge that
よって、本発明の要旨とするところは、電気めっき廃液
を１００℃以上５００℃以下の熱風により蒸発させ、次
いで、得られた気体に同伴した固体分を分離することを
特徴とする、電気めっき廃液の乾式処理法である。熱風
温度は好ましくは１５０〜２００℃である。可及的にす
べて水分だけを除去するようにすれば良い。Therefore, the gist of the present invention is to provide an electroplating waste liquid, which is characterized in that the electroplating waste liquid is evaporated with hot air at a temperature of 100°C or more and 500°C or less, and then the solid content accompanying the obtained gas is separated. This is a dry processing method. The hot air temperature is preferably 150 to 200°C. All you have to do is remove as much moisture as possible.
本発明の好適態様にあって、前記電気めっき廃液の蒸発
は低温スプレードライヤーを使って行うのである。スプ
レードライヤーとは上方からの液体スプレーに下方から
熱風を吹き付け、落下する液体スプレーを蒸発させる装
置である。In a preferred embodiment of the invention, the electroplating waste is evaporated using a low temperature spray dryer. A spray dryer is a device that blows hot air from below onto a liquid spray from above, evaporating the falling liquid spray.
また、好ましくは、前記電気めっき廃液は亜鉛電気めっ
き廃液、鉄−亜鉛電気めっき廃液およびニッケル−亜鉛
電気めっき廃液から選ばれた少なくとも１の電気めっき
廃液であって、前記固体分として各金属の硫酸塩を回収
するように構成してもよい、なお、回収金属は処理する
めっき廃液の種類によってそれぞれである。Preferably, the electroplating waste liquid is at least one electroplating waste liquid selected from a zinc electroplating waste liquid, an iron-zinc electroplating waste liquid, and a nickel-zinc electroplating waste liquid, and the solid content includes sulfuric acid of each metal. It may be configured to recover salt; however, the recovered metal varies depending on the type of plating waste liquid to be treated.
（作用）
次に、添付図面を参照して本発明の処理工程をさらに詳
細に説明する。(Operation) Next, the processing steps of the present invention will be described in further detail with reference to the accompanying drawings.
添付図面は、本発明にかかる処理工程を示すフローチャ
ートであり、図中、適宜電気めっき設備（図示せず）か
らのめっき廃液は一旦めっき廃液槽ＩＯに貯留され、必
要に応じスプレードライヤー１２に取り出される。一方
、熱風は熱風炉１４に燃料および燃焼空気を供給して、
図示例ではほぼ１５０℃の熱風１６を前記スプレードラ
イヤー１２に供給する。バーナー直火式スプレードライ
ヤーでは、火炎温度（１２００〜１４００℃）で、５０
４′−も、分解してしまうので、低温スプレードライヤ
ーを利用する。The attached drawing is a flowchart showing the processing steps according to the present invention, and in the drawing, plating waste liquid from an electroplating facility (not shown) is temporarily stored in a plating waste liquid tank IO and taken out to a spray dryer 12 as necessary. It will be done. On the other hand, the hot air supplies fuel and combustion air to the hot air stove 14,
In the illustrated example, hot air 16 at approximately 150° C. is supplied to the spray dryer 12 . In a burner direct flame spray dryer, the flame temperature (1200 to 1400°C) is 50°C.
4'- also decomposes, so use a low-temperature spray dryer.
スプレードライヤーそれ自体の構造はすでに周知であっ
てこれ以上の説明は要しないであろう０本発明の場合に
あってはその構造には特に制限はない。ノズル１８から
噴霧されためっき廃液２０は直ちに蒸発し、一部結晶水
は分解する。全体は気体となり中に一部結晶が同伴する
のである。これらのガスはスプレードライヤーから取り
出され、適宜集塵機２２に導かれて固体分をなす結晶粉
２３は気体から分離され回収される。残りの気体はその
まま排風機２６を経てス１タック２８から大気へ放出さ
れる。The structure of the spray dryer itself is already well known and does not require any further explanation; however, in the case of the present invention, there are no particular limitations on the structure. The plating waste liquid 20 sprayed from the nozzle 18 immediately evaporates, and some of the crystal water is decomposed. The whole becomes a gas, with some crystals accompanying it. These gases are taken out from the spray dryer and are appropriately led to a dust collector 22, where the solid crystal powder 23 is separated from the gas and recovered. The remaining gas passes through the exhaust fan 26 and is discharged from the stack 28 to the atmosphere.
スプレードライヤー１２から発生する気体はその殆どが
水蒸気であって、それに同伴する固体分も通常平均粒径
６３μ謂以下の微粒子であり、高温、高湿度の気体であ
るため、集塵機のろ布材質は通常の乾燥気体の場合と異
なり、耐熱性のグラスウール系材質によるものが好まし
い、固体分を分離した後は、気体はすでに述べたように
大部分が水蒸気であるから、これを単に大気放出するの
ではなく、適宜熱交換機によって熱回収を行ってから大
気放出を行ってもよい。Most of the gas generated from the spray dryer 12 is water vapor, and the solid content that accompanies it is usually fine particles with an average particle size of 63μ or less, and is a high-temperature, high-humidity gas, so the filter cloth material of the dust collector is Unlike the case of ordinary dry gas, it is preferable to use a heat-resistant glass wool-based material.After separating the solids, the gas is mostly water vapor, as mentioned above, so it is not necessary to simply release it into the atmosphere. Alternatively, heat may be recovered using a heat exchanger as appropriate and then released into the atmosphere.
本発明にかかる方法により回収される有価金属の形態は
、めっき廃液がＺｎイオン含を硫酸浴である場合には、
Ｚｎ５Ｏ，・ｎＨｔｏ（ｎは熱風温度によって異なる）
であり、また、Ｎｉイオンを含む場合にはＮｉ分はＮｉ
ＳＯ４・ｎＨｔＯ（ｎは熱風温度によって異なる）の形
である。またＦｅイオンもｐｅｓＯ４・ｎＨｔＯ（ｎは
熱風温度によって異なる）の形で回収される。その他、
カルシウム、ナトリウム等も適宜硫酸塩の形で回収され
る。The form of valuable metals recovered by the method according to the present invention is as follows when the plating waste solution is a sulfuric acid bath containing Zn ions.
Zn5O, ・nHto (n varies depending on the hot air temperature)
In addition, when Ni ions are included, the Ni content is Ni
It is in the form of SO4.nHtO (n varies depending on the hot air temperature). Fe ions are also recovered in the form of pesO4.nHtO (n varies depending on the hot air temperature). others,
Calcium, sodium, etc. are also optionally recovered in the form of sulfates.
これからもわかるように、本発明方法によれば、有価金
属とともに硫酸根も結晶の形で回収されることから、本
発明は資源の再利用には特に適する処理方法である。As can be seen from this, according to the method of the present invention, sulfate radicals are recovered in the form of crystals along with valuable metals, so the present invention is a treatment method particularly suitable for resource reuse.
このようにして回収された結晶粉は取扱いを容易にする
ためブリケット等に成形される。The crystal powder thus recovered is shaped into briquettes or the like for ease of handling.
なお、本発明の変更例として５００℃以上の熱風を吹き
付ける方式も考えられるが、これではＺｎとＳＯａとが
分解してしまい、そのため水スプレー吸収塔を使用して
ＺｎはＺｎＯとしてまたＳＯｌはＨｔＳＯａとして回収
しなければならず、乾式処理の利点を十分に活用できな
い、また、すでに述べたようにめっき廃液の系外パージ
量は少ないため水スプレー吸収塔のような大規模設備で
はコスト高は免かれない。As a modification of the present invention, a method of blowing hot air at 500°C or higher may be considered, but this would decompose Zn and SOa, so a water spray absorption tower was used to convert Zn into ZnO and SOl into HtSOa. In addition, as mentioned above, the amount of plating waste liquid that is purged outside the system is small, so large-scale equipment such as water spray absorption towers can avoid high costs. It doesn't happen.
次に、本発明を実施例によってさらに詳細に説明する。Next, the present invention will be explained in more detail by way of examples.
実施例
本例にあっては、添付図面に示すフローチャートにした
がって第１表に示す性状の鋼板の電気亜鉛めっき液の廃
液を本発明方法により処理した。EXAMPLE In this example, waste liquid of an electrolytic galvanizing solution for steel sheets having the properties shown in Table 1 was treated by the method of the present invention in accordance with the flowchart shown in the attached drawings.
結果をまとめて第２表に示す、第３表および第４表には
固体分分析例および粒度分布をそれぞれまとめて示す。The results are summarized in Table 2, and Tables 3 and 4 summarize examples of solid content analysis and particle size distribution, respectively.
なお、熱風温度は１５０℃、めっき廃液供給量はＩＱ
Ｊ ７ｍａｎ、集！！機はう右方式のものを使用した。The hot air temperature is 150℃, and the plating waste liquid supply amount is IQ.
J7man, collection! ! The machine used a right-hand type.
（注）Ｔ−Ｆｅは全鉄分の意味
員土友
以上の結果からも分かるように、本発明の方法によれば
、得られた結晶粉のブリケット成形機での成形性は良好
であり、結晶粉の取り扱いも容易であった。また、結晶
粉の水分は分解されているが、ＺｎとＳＯｌとは分解さ
れていないことが確認された。このようにして得たＺｎ
ＳＯ４結晶粉は金属亜鉛および硫酸回収の原料となるな
ど、資源再利用に有効な手段であった。(Note) T-Fe means total iron content.As can be seen from the above results, according to the method of the present invention, the moldability of the obtained crystal powder in a briquette molding machine is good, and The powder was also easy to handle. It was also confirmed that although the water in the crystal powder was decomposed, Zn and SOI were not decomposed. Zn obtained in this way
SO4 crystal powder was an effective means of resource reuse, serving as a raw material for recovering metallic zinc and sulfuric acid.
（発明の効果）
以上詳述したように、本発明によれば、（１）低温スプ
レードライヤーを使うだけで、多量のあるいはわずかな
量のめっき廃液でも簡単な工程と設備で直ちに処理でき
、（２）得られる結晶粉は金属回収、硫酸回収原料とな
り、（３）設備費、ランニングコストが安価であり、（
４）無公害処理法であり、そして（５）産業廃棄物の発
生が皆無である等の優れた効果が得られるのであり、当
業界における意義は大きい。(Effects of the Invention) As detailed above, according to the present invention, (1) just by using a low-temperature spray dryer, even a large amount or a small amount of plating waste liquid can be immediately treated with simple steps and equipment; 2) The obtained crystal powder can be used as a raw material for metal recovery and sulfuric acid recovery, (3) equipment costs and running costs are low;
4) It is a non-polluting treatment method, and (5) excellent effects such as no generation of industrial waste can be obtained, so it is of great significance in this industry.
添付図面は、本発明の方法のフローチャートである。
１０：めっき廃液槽 １２ニスプレードライヤー１４：
熱風炉 １６：熱風
２２：集塵機 ２３：結晶粉The accompanying drawing is a flowchart of the method of the invention. 10: Plating waste liquid tank 12 varnish spray dryer 14:
Hot air stove 16: Hot air 22: Dust collector 23: Crystal powder
Claims (3)
風により蒸発させ、次いで、得られた気体に同伴した固
体分を分離することを特徴とする、電気めっき廃液の乾
式処理法。(1) A dry treatment method for electroplating waste liquid, which is characterized by evaporating the electroplating waste liquid with hot air at a temperature of 100° C. or higher and 500° C. or lower, and then separating the solid content that accompanies the obtained gas.
ヤーを使って行う、特許請求の範囲第１項記載の方法。(2) The method according to claim 1, wherein the electroplating waste liquid is evaporated using a low-temperature spray dryer.
亜鉛電気めっき廃液、およびニッケル−亜鉛電気めっき
廃液から選んだ少なくとも１の電気めっき廃液であって
、前記固体分としてニッケルおよび亜鉛の硫酸塩を回収
する、特許請求の範囲第１項または第２項記載の方法。(3) The electroplating waste liquid is zinc electroplating waste liquid, iron-
At least one electroplating waste solution selected from a zinc electroplating waste solution and a nickel-zinc electroplating waste solution, in which nickel and zinc sulfates are recovered as the solid components. Method described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62290082A JPH01132721A (en) | 1987-11-17 | 1987-11-17 | Dry process treatment of waste liquid of electroplating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62290082A JPH01132721A (en) | 1987-11-17 | 1987-11-17 | Dry process treatment of waste liquid of electroplating |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01132721A true JPH01132721A (en) | 1989-05-25 |
| JPH046779B2 JPH046779B2 (en) | 1992-02-06 |
Family
ID=17751562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62290082A Granted JPH01132721A (en) | 1987-11-17 | 1987-11-17 | Dry process treatment of waste liquid of electroplating |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01132721A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9808424B2 (en) | 2010-04-09 | 2017-11-07 | Pacira Pharmaceuticals, Inc. | Method for formulating large diameter synthetic membrane vesicles |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102556437A (en) * | 2010-12-29 | 2012-07-11 | 吴士敏 | Off-line full-automatic bubble cap packaging quality detection system and method thereof |
-
1987
- 1987-11-17 JP JP62290082A patent/JPH01132721A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9808424B2 (en) | 2010-04-09 | 2017-11-07 | Pacira Pharmaceuticals, Inc. | Method for formulating large diameter synthetic membrane vesicles |
| US10045941B2 (en) | 2010-04-09 | 2018-08-14 | Pacira Pharmaceuticals, Inc. | Method for formulating large diameter synthetic membrane vesicles |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH046779B2 (en) | 1992-02-06 |
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