WO2016184248A1 - Nitric acid stripping liquid treatment system - Google Patents

Nitric acid stripping liquid treatment system Download PDF

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Publication number
WO2016184248A1
WO2016184248A1 PCT/CN2016/077068 CN2016077068W WO2016184248A1 WO 2016184248 A1 WO2016184248 A1 WO 2016184248A1 CN 2016077068 W CN2016077068 W CN 2016077068W WO 2016184248 A1 WO2016184248 A1 WO 2016184248A1
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WO
WIPO (PCT)
Prior art keywords
nitric acid
treatment system
neutralization
deplating
water treatment
Prior art date
Application number
PCT/CN2016/077068
Other languages
French (fr)
Chinese (zh)
Inventor
韦建敏
赵兴文
张晓蓓
张小波
Original Assignee
成都虹华环保科技股份有限公司
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Publication date
Priority claimed from CN201510261751.3A external-priority patent/CN104843926A/en
Priority claimed from CN201520331252.2U external-priority patent/CN204625418U/en
Application filed by 成都虹华环保科技股份有限公司 filed Critical 成都虹华环保科技股份有限公司
Publication of WO2016184248A1 publication Critical patent/WO2016184248A1/en

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    • 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
    • C02F1/02—Treatment of water, waste water, or sewage by heating
    • C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • 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
    • C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
    • C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
    • 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
    • C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment

Definitions

  • the present invention relates to deplating water treatment, and in particular to a nitric acid deplating water treatment system.
  • Deplating water is a liquid used for deplating metal surface coating. It can be used for vacuum plating of metal, alloy, etc., such as aluminum plating, nickel plating, chrome plating, stainless steel, gold, etc., which needs to meet the detergency. Strong, low cost, no harm to the human body, stable drug, recyclable, no need to discharge Chinese medicine solution, add potion in appropriate proportion, and will not cause workpiece erosion.
  • the used deplated water contains some ions obtained after the chemical reaction, such as the ions of the plated metal and some anions in the original deionized water.
  • the deplated wastewater must be strictly treated to meet the requirements before it can be discharged. However, the risk of polluting the environment is increased, the burden of sewage treatment is increased, and industrial water consumption is increased.
  • the object of the present invention is to overcome the disadvantages of the prior art and to provide a nitric acid deplating water treatment system which has a simple structure and meets the requirements of sustainable production.
  • a nitric acid deplating water treatment system comprising a supply device, a vacuum distillation device, a neutralization adjustment device, a filtration device, an acid treatment device, and an electrolysis device, a filtration device
  • the invention comprises a filtrate separation device and a filter cake separation device, a supply device, a vacuum distillation device, a neutralization adjustment device, a filter cake separation device, an acid treatment device and an electrolysis device, which are sequentially connected according to a liquid circulation direction, and a neutralization adjustment device external filtrate separation device and Alkaline water addition device.
  • the vacuum distillation apparatus is externally connected to a nitric acid recovery unit.
  • the neutralization adjusting device is externally connected with an additive adding device.
  • a residual liquid storage device is disposed between the vacuum distillation apparatus and the neutralization adjustment device.
  • the filtrate separation device is externally connected to a wastewater treatment station.
  • the electrolysis device is externally connected to a sewage treatment station.
  • the neutralization adjusting device is provided with a pH detecting device.
  • the present invention has the following advantages:
  • the nitric acid recovery device is used to recover the nitric acid to avoid waste, and reduce the consumption of alkali in the subsequent production, saving resources and meeting the requirements of sustainable production;
  • the flow rate of the alkaline water can be controlled as needed, so that the neutralization reaction in the neutralization adjusting device can be performed well, and the situation that the acidity is too high or the alkalinity is too high is avoided;
  • the pH in the neutralization adjusting device can be detected, and the residual liquid can be added to the residual liquid storage device to improve the acidity or to control the addition of the alkaline water adding device.
  • Alkaline water to increase the alkalinity, so that the neutralization reaction can be carried out well and quickly;
  • the copper ions in the liquid can be reduced to copper metal and collected, thereby realizing the recovery of copper metal, thereby avoiding copper ion leakage and polluting the environment;
  • the external sewage treatment station and the filtrate separation device are connected to the external wastewater treatment station through the electrolysis device, thereby avoiding pollution caused by direct discharge of sewage and waste water into the natural environment, and further recycling and recycling of resources.
  • FIG. 1 is a schematic structural view of a nitric acid deplating water treatment system.
  • 1-supply device 2-distillation distillation device, 3-residual liquid storage device, 4-neutralization adjustment device, 5-alkaline water addition device, 6-filter cake separation device, 7-acid treatment Apparatus, 8-electrolytic unit, 9-sewage treatment station, 10-wastewater treatment station, 11-filtrate separation unit, 12-additive addition unit, 13-nitric acid recovery unit.
  • a nitric acid deplating water treatment system comprising a supply device 1, a vacuum distillation device 2, a neutralization adjustment device 4, a filtration device, an acid treatment device 7, and an electrolysis device 8, the present embodiment
  • the vacuum distillation unit 2 is externally connected to the nitric acid recovery unit 13
  • the filter unit includes a filtrate separation unit 11 and a filter cake separation unit 6 .
  • the filtrate separation unit 11 is externally connected to the wastewater treatment station 10 .
  • the electrolysis device 8 is externally connected to the sewage treatment station 9, and the supply device 1, the vacuum distillation device 2, the neutralization adjustment device 4, the filter cake separation device 6, the acid treatment device 7, and the electrolysis device 8 are sequentially connected in accordance with the liquid flow direction.
  • the residual liquid storage device 3 is disposed between the vacuum distillation device 2 and the neutralization adjustment device 4, and the neutralization adjustment device 4 is externally connected to the filtrate separation device 11 and the alkaline water addition device 5.
  • the neutralization adjusting device 4 is also provided with an additive adding device 12, and in the present embodiment, the neutralization adjusting device 4 is provided with a pH detecting device.
  • the working process of the present invention is as follows:
  • the stored or deuterated nitric acid deplating water is input into the system through the supply device 1, and the nitric acid deplating water is subjected to vacuum distillation treatment through the vacuum distillation device 2.
  • Nitric acid, and the nitric acid is recovered by the nitric acid recovery device 13 for reuse, and the residual liquid after the distillation treatment enters the residual liquid storage device 3, and the residual liquid storage device 3 controls the flow rate to enter the neutralization adjusting device 4, and is detected according to the pH detecting device.
  • the pH-controlled alkaline water adding device 5 adds a certain amount of alkali solution to the neutralization reaction of the residual liquid entering the neutralization adjusting device 4, and the additive adding device 12 adds a certain amount of the additive to the neutralization adjusting device 4 to promote the reaction.
  • the reaction rate is accelerated, and the liquid after the reaction is separated by the filtrate separation device 11 and the filter cake separation device 6 to separate the filtrate and the filter cake, and the filtrate is sent to the wastewater treatment station 10 for treatment, and the filter cake is sent to the acid treatment device 7 for acid.
  • the electrolysis device 8 is electrolyzed to reduce copper ions to copper metal for collection, and the electrolyzed liquid is sent to the sewage treatment station 9 for treatment.

Abstract

Provided is a nitric acid stripping liquid treatment system comprising a supply device (1), a reduced pressure distillation device (2), a neutralizing adjusting device (4), a filtering device, an acid treatment device (7) and an electrolysis device (8), wherein the filtering device comprises a filtrate separating device (11) and a filter cake separating device (6); the supply device (1), the reduced pressure distillation device (2), the neutralizing adjusting device (4), the filter cake separating device (6), the acid treatment device (7) and the electrolysis device (8) are in communication in sequence in a liquid flow direction; and the neutralizing adjusting device (4) is externally connected with the filtrate separating device (11) and an alkaline liquid adding device (5). The system is used for treating a nitric acid stripping liquid, and can recover nitric acid, copper etc., so as to avoid waste.

Description

一种硝酸退镀水处理系统 技术领域  Nitric acid deplating water treatment system
[0001] 本发明涉及退镀水处理， 特别是一种硝酸退镀水处理系统。  [0001] The present invention relates to deplating water treatment, and in particular to a nitric acid deplating water treatment system.
背景技术  Background technique
[0002] 退镀水是一种用来退镀金属表面镀层的液体， 可以用于对镀铝、 镀镍、 镀铬、 不锈钢、 金色等金属、 合金真空电镀的镀层去除， 其需要符合去污力强、 成本 低、 不伤害人体、 药性稳定、 可循环使用、 使用中药液不必排放、 依适当比例 添加药水即可、 不会造成工件侵蚀等要求。 使用过的退镀水含有经过化学反应 之后得到的一些离子， 如镀层金属的离子以及原退镀水中的一些阴离子， 退镀 后的废水必须经过严格处理， 达到要求才能够进行排放。 但排放有污染环境的 风险， 增加污水处理的负担， 并且增加工业用水量。  [0002] Deplating water is a liquid used for deplating metal surface coating. It can be used for vacuum plating of metal, alloy, etc., such as aluminum plating, nickel plating, chrome plating, stainless steel, gold, etc., which needs to meet the detergency. Strong, low cost, no harm to the human body, stable drug, recyclable, no need to discharge Chinese medicine solution, add potion in appropriate proportion, and will not cause workpiece erosion. The used deplated water contains some ions obtained after the chemical reaction, such as the ions of the plated metal and some anions in the original deionized water. The deplated wastewater must be strictly treated to meet the requirements before it can be discharged. However, the risk of polluting the environment is increased, the burden of sewage treatment is increased, and industrial water consumption is increased.
技术问题  technical problem
[0003] 本发明的目的在于克服现有技术的缺点， 提供一种结构简单、 符合可持续生产 要求的硝酸退镀水处理系统。  [0003] The object of the present invention is to overcome the disadvantages of the prior art and to provide a nitric acid deplating water treatment system which has a simple structure and meets the requirements of sustainable production.
问题的解决方案  Problem solution
技术解决方案  Technical solution
[0004] 本发明的目的通过以下技术方案来实现： 一种硝酸退镀水处理系统， 它包括供 应装置、 减压蒸馏装置、 中和调整装置、 过滤装置、 酸处理装置和电解装置， 过滤装置包括滤液分离装置和滤饼分离装置， 供应装置、 减压蒸馏装置、 中和 调整装置、 滤饼分离装置、 酸处理装置和电解装置按照液体流通方向依次连通 ， 中和调整装置外接滤液分离装置和碱水添加装置。  [0004] The object of the present invention is achieved by the following technical solutions: A nitric acid deplating water treatment system comprising a supply device, a vacuum distillation device, a neutralization adjustment device, a filtration device, an acid treatment device, and an electrolysis device, a filtration device The invention comprises a filtrate separation device and a filter cake separation device, a supply device, a vacuum distillation device, a neutralization adjustment device, a filter cake separation device, an acid treatment device and an electrolysis device, which are sequentially connected according to a liquid circulation direction, and a neutralization adjustment device external filtrate separation device and Alkaline water addition device.
[0005] 所述的减压蒸馏装置外接硝酸回收装置。  [0005] The vacuum distillation apparatus is externally connected to a nitric acid recovery unit.
[0006] 所述的中和调整装置外接添加剂添加装置。  [0006] The neutralization adjusting device is externally connected with an additive adding device.
[0007] 所述的减压蒸馏装置和中和调整装置之间设有残留液存储装置。  [0007] A residual liquid storage device is disposed between the vacuum distillation apparatus and the neutralization adjustment device.
[0008] 所述的滤液分离装置外接废水处理站。  [0008] The filtrate separation device is externally connected to a wastewater treatment station.
[0009] 所述的电解装置外接污水处理站。 [0010] 所述的中和调整装置内设有酸碱度检测装置。 [0009] The electrolysis device is externally connected to a sewage treatment station. [0010] The neutralization adjusting device is provided with a pH detecting device.
发明的有益效果  Advantageous effects of the invention
有益效果  Beneficial effect
[0011] 本发明具有以下优点：  [0011] The present invention has the following advantages:
[0012] 1.通过使用减压蒸馏装置可以降低硝酸退镀水的沸点， 使硝酸退镀水更容易达 到沸点并减少达到沸点所需的能耗， 以便于回收硝酸；  [0012] 1. By using a vacuum distillation apparatus, the boiling point of the nitric acid deplating water can be lowered, and the nitric acid deplating water can more easily reach the boiling point and reduce the energy consumption required to reach the boiling point, so as to recover the nitric acid;
[0013] 2.通过设置硝酸回收装置回收硝酸以避免浪费， 并减少后续生产中碱的消耗， 节约了资源， 符合可持续生产的要求；  [0013] 2. The nitric acid recovery device is used to recover the nitric acid to avoid waste, and reduce the consumption of alkali in the subsequent production, saving resources and meeting the requirements of sustainable production;
[0014] 3.通过设置残留液存储装置可以对来不及处理的液体进行存储， 并控制液体的 流量， 根据生产任务合理的控制流量以达到最优的生产效果， 并且可以调节中 和调整装置中的酸碱度， 使中和反应能够良好快速的进行； [0014] 3. By setting the residual liquid storage device, the liquid that cannot be processed can be stored, and the flow rate of the liquid is controlled, the flow rate is controlled according to the production task to achieve an optimal production effect, and the neutralization adjustment device can be adjusted. The pH makes the neutralization reaction proceed well and quickly;
[0015] 4.通过设置碱水添加装置可以根据需要控制碱水的流量， 使中和调整装置内的 中和反应能够良好进行， 避免出现酸度过高或碱度过高的情况； [0015] 4. By providing an alkaline water adding device, the flow rate of the alkaline water can be controlled as needed, so that the neutralization reaction in the neutralization adjusting device can be performed well, and the situation that the acidity is too high or the alkalinity is too high is avoided;
[0016] 5.通过在中和调整装置内设置酸碱度检测装置， 可以实吋检测中和调整装置内 的酸碱度， 以便及吋控制残留液存储装置添加残留液以提高酸度或控制碱水添 加装置添加碱水以提高碱度， 使中和反应可以良好快速地进行； [0016] 5. By setting a pH measuring device in the neutralization adjusting device, the pH in the neutralization adjusting device can be detected, and the residual liquid can be added to the residual liquid storage device to improve the acidity or to control the addition of the alkaline water adding device. Alkaline water to increase the alkalinity, so that the neutralization reaction can be carried out well and quickly;
[0017] 6.通过设置电解装置可以将液体中的铜离子还原成铜金属并进行收集， 从而实 现了回收铜金属， 避免铜离子泄漏污染环境； [0017] 6. By setting the electrolysis device, the copper ions in the liquid can be reduced to copper metal and collected, thereby realizing the recovery of copper metal, thereby avoiding copper ion leakage and polluting the environment;
[0018] 7.通过电解装置外接污水处理站以及滤液分离装置外接废水处理站， 避免了污 水、 废水直接排入自然环境造成污染， 并且可以进一步回收利用可回收的资源[0018] 7. The external sewage treatment station and the filtrate separation device are connected to the external wastewater treatment station through the electrolysis device, thereby avoiding pollution caused by direct discharge of sewage and waste water into the natural environment, and further recycling and recycling of resources.
， 避免浪费， 符合可持续生产的要求。 , avoid waste, meet the requirements of sustainable production.
对附图的简要说明  Brief description of the drawing
附图说明  DRAWINGS
[0019] 图 1为一种硝酸退镀水处理系统的结构示意图。  1 is a schematic structural view of a nitric acid deplating water treatment system.
[0020] 图中， 1-供应装置， 2-减压蒸馏装置， 3-残留液存储装置， 4-中和调整装置， 5- 碱水添加装置， 6-滤饼分离装置， 7-酸处理装置， 8-电解装置， 9-污水处理站， 1 0-废水处理站， 11-滤液分离装置， 12-添加剂添加装置， 13-硝酸回收装置。 本发明的实施方式 [0020] In the drawings, 1-supply device, 2-distillation distillation device, 3-residual liquid storage device, 4-neutralization adjustment device, 5-alkaline water addition device, 6-filter cake separation device, 7-acid treatment Apparatus, 8-electrolytic unit, 9-sewage treatment station, 10-wastewater treatment station, 11-filtrate separation unit, 12-additive addition unit, 13-nitric acid recovery unit. Embodiments of the invention
[0021] 下面结合附图对本发明做进一步的描述， 本发明的保护范围不局限于以下所述  [0021] The present invention will be further described below with reference to the accompanying drawings, and the scope of protection of the present invention is not limited to the following
[0022] 如图 1所示， 一种硝酸退镀水处理系统， 它包括供应装置 1、 减压蒸馏装置 2、 中和调整装置 4、 过滤装置、 酸处理装置 7和电解装置 8， 本实施例中， 所述的减 压蒸馏装置 2外接硝酸回收装置 13， 过滤装置包括滤液分离装置 11和滤饼分离装 置 6， 本实施例中， 所述的滤液分离装置 11外接废水处理站 10， 所述的电解装置 8外接污水处理站 9， 供应装置 1、 减压蒸馏装置 2、 中和调整装置 4、 滤饼分离装 置 6、 酸处理装置 7和电解装置 8按照液体流通方向依次连通， 本实施例中， 所述 的减压蒸馏装置 2和中和调整装置 4之间设有残留液存储装置 3， 中和调整装置 4 外接滤液分离装置 11和碱水添加装置 5， 本实施例中， 所述的中和调整装置 4还 外接添加剂添加装置 12， 本实施例中， 所述的中和调整装置 4内设有酸碱度检测 装置。 [0022] As shown in FIG. 1, a nitric acid deplating water treatment system, comprising a supply device 1, a vacuum distillation device 2, a neutralization adjustment device 4, a filtration device, an acid treatment device 7, and an electrolysis device 8, the present embodiment In the example, the vacuum distillation unit 2 is externally connected to the nitric acid recovery unit 13 , and the filter unit includes a filtrate separation unit 11 and a filter cake separation unit 6 . In the embodiment, the filtrate separation unit 11 is externally connected to the wastewater treatment station 10 . The electrolysis device 8 is externally connected to the sewage treatment station 9, and the supply device 1, the vacuum distillation device 2, the neutralization adjustment device 4, the filter cake separation device 6, the acid treatment device 7, and the electrolysis device 8 are sequentially connected in accordance with the liquid flow direction. In the example, the residual liquid storage device 3 is disposed between the vacuum distillation device 2 and the neutralization adjustment device 4, and the neutralization adjustment device 4 is externally connected to the filtrate separation device 11 and the alkaline water addition device 5. In this embodiment, The neutralization adjusting device 4 is also provided with an additive adding device 12, and in the present embodiment, the neutralization adjusting device 4 is provided with a pH detecting device.
[0023] 本发明的工作过程如下： 通过供应装置 1将储备的或及吋生产的硝酸退镀水输 入到该系统内， 经过减压蒸馏装置 2对硝酸退镀水进行减压蒸馏处理分离出硝酸 ， 并通过硝酸回收装置 13对硝酸进行回收以便再利用， 经过蒸馏处理后的残留 液进入残留液存储装置 3， 有残留液存储装置 3控制流量进入中和调整装置 4， 根 据酸碱度检测装置检测到的酸碱度控制碱水添加装置 5加入一定量的碱液与进入 中和调整装置 4的残留液发生中和反应， 添加剂添加装置 12向中和调整装置 4内 加入一定量的添加剂促进反应进行， 加快反应速率， 经过反应之后的液体被滤 液分离装置 11和滤饼分离装置 6分离出滤液和滤饼， 滤液被送到废水处理站 10处 理， 滤饼被送入到酸处理装置 7内进行酸处理， 从而将滤饼中的铜氧化成离子状 态分离出， 带有铜离子的液体进入电解装置 8进行电解， 将铜离子还原成铜金属 进行收集， 电解之后的液体被送入到污水处理站 9处理。  [0023] The working process of the present invention is as follows: The stored or deuterated nitric acid deplating water is input into the system through the supply device 1, and the nitric acid deplating water is subjected to vacuum distillation treatment through the vacuum distillation device 2. Nitric acid, and the nitric acid is recovered by the nitric acid recovery device 13 for reuse, and the residual liquid after the distillation treatment enters the residual liquid storage device 3, and the residual liquid storage device 3 controls the flow rate to enter the neutralization adjusting device 4, and is detected according to the pH detecting device. The pH-controlled alkaline water adding device 5 adds a certain amount of alkali solution to the neutralization reaction of the residual liquid entering the neutralization adjusting device 4, and the additive adding device 12 adds a certain amount of the additive to the neutralization adjusting device 4 to promote the reaction. The reaction rate is accelerated, and the liquid after the reaction is separated by the filtrate separation device 11 and the filter cake separation device 6 to separate the filtrate and the filter cake, and the filtrate is sent to the wastewater treatment station 10 for treatment, and the filter cake is sent to the acid treatment device 7 for acid. Processing, thereby oxidizing copper in the filter cake to an ionic state, and separating the liquid with copper ions into The electrolysis device 8 is electrolyzed to reduce copper ions to copper metal for collection, and the electrolyzed liquid is sent to the sewage treatment station 9 for treatment.

Claims

权利要求书 Claim
[权利要求 1] 一种硝酸退镀水处理系统， 其特征在于： 它包括供应装置 （1) 、 减 压蒸馏装置 （2) 、 中和调整装置 （4) 、 过滤装置、 酸处理装置 （7 ) 和电解装置 （8) ， 过滤装置包括滤液分离装置 （11) 和滤饼分离 装置 （6) ， 供应装置 （1) 、 减压蒸馏装置 （2) 、 中和调整装置 （4 ) 、 滤饼分离装置 （6) 、 酸处理装置 （7) 和电解装置 （8) 按照液 体流通方向依次连通， 中和调整装置 （4) 外接滤液分离装置 （11) 和碱水添加装置 （5) 。  [Claim 1] A nitric acid deplating water treatment system, comprising: a supply device (1), a vacuum distillation device (2), a neutralization adjustment device (4), a filtration device, and an acid treatment device (7) And an electrolysis device (8), the filter device comprising a filtrate separation device (11) and a filter cake separation device (6), a supply device (1), a vacuum distillation device (2), a neutralization adjustment device (4), a filter cake The separation device (6), the acid treatment device (7), and the electrolysis device (8) are sequentially connected in accordance with the liquid flow direction, and the neutralization adjustment device (4) is externally connected to the filtrate separation device (11) and the alkaline water addition device (5).
[权利要求 2] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的减压蒸馏装置 （2) 外接硝酸回收装置 （13) 。  [Claim 2] A nitric acid deplating water treatment system according to claim 1, wherein the vacuum distillation unit (2) is externally connected to a nitric acid recovery unit (13).
[权利要求 3] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的中和调整装置 （4) 外接添加剂添加装置 （12) 。  [Claim 3] A nitric acid deplating water treatment system according to claim 1, wherein the neutralization adjusting device (4) is externally connected to the additive adding device (12).
[权利要求 4] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的减压蒸馏装置 （2) 和中和调整装置 （4) 之间设有残留液存储装置 (3) 。  [Claim 4] A nitric acid deplating water treatment system according to claim 1, characterized in that: a residual liquid storage is provided between the vacuum distillation unit (2) and the neutralization adjustment unit (4). Device (3).
[权利要求 5] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的滤液分离装置 （11) 外接废水处理站 （10) 。  [Claim 5] A nitric acid deplating water treatment system according to claim 1, wherein: said filtrate separation device (11) is externally connected to a wastewater treatment station (10).
[权利要求 6] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的电解装置 （8) 外接污水处理站 （9) 。 [Claim 6] A nitric acid deplating water treatment system according to claim 1, wherein: said electrolysis device (8) is externally connected to a sewage treatment station (9).
[权利要求 7] 根据权利要求 1所述的一种硝酸退镀水处理系统， 其特征在于： 所述 的中和调整装置 （4) 内设有酸碱度检测装置。 [Claim 7] A nitric acid deplating water treatment system according to claim 1, wherein the neutralization adjusting device (4) is provided with a pH detecting device.
PCT/CN2016/077068 2015-05-21 2016-03-23 Nitric acid stripping liquid treatment system WO2016184248A1 (en)

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