CN104310673A - Method for physically treating complexing metal ion wastewater - Google Patents

Method for physically treating complexing metal ion wastewater Download PDF

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Publication number
CN104310673A
CN104310673A CN201410586549.3A CN201410586549A CN104310673A CN 104310673 A CN104310673 A CN 104310673A CN 201410586549 A CN201410586549 A CN 201410586549A CN 104310673 A CN104310673 A CN 104310673A
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CN
China
Prior art keywords
water
waste water
complexation
metal ions
concentration
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Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201410586549.3A
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Chinese (zh)
Inventor
朱焰焰
王文华
陈士冰
袁玉柱
张茂功
张军
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Beichuan Tian Xun New Material Co Ltd
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Beichuan Tian Xun New Material Co Ltd
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Application filed by Beichuan Tian Xun New Material Co Ltd filed Critical Beichuan Tian Xun New Material Co Ltd
Priority to CN201410586549.3A priority Critical patent/CN104310673A/en
Publication of CN104310673A publication Critical patent/CN104310673A/en
Pending legal-status Critical Current

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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W10/00Technologies for wastewater treatment
    • Y02W10/30Wastewater or sewage treatment systems using renewable energies
    • Y02W10/37Wastewater or sewage treatment systems using renewable energies using solar energy

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  • Separation Using Semi-Permeable Membranes (AREA)
  • Water Treatment By Electricity Or Magnetism (AREA)

Abstract

The invention provides a method for physically treating complexing metal ion wastewater. The method comprises the following steps: (1) directly pumping flexible electromagnetic shielding fabric wastewater or non-ferrous metal metallurgical wastewater or electroplating workshop surface water, cleaning water, flushing water and the like by virtue of a high pressure pump into a micro-filtration treater to be separated into fresh water and concentrated water; (2) separating the fresh water which is separated from the step (1) again by using a nano-filtration membrane, wherein the concentrated water enters into a concentration system for further concentration; (3) secondarily purifying the fresh water separated by nano-filtration concentration equipment in the step (2) by using reverse osmosis purification equipment, arranging a precise filter device to treat the concentrated water separated by the nano-filtration membrane in the step (2) before the nano-filtration concentration equipment is used for repeated concentration, and entering into a solar evaporation system for continuing to concentrate; and (4) electrolyzing a condensation body in the step (3) by adopting an electrolytic tank, extracting metals and returning a liquid to a raw water pond. The process overcomes the defects in the prior art, is simple in equipment, small in occupied area and free from chemical substances. By using a solar energy system, the complexing metal ions are extracted and water resources are recycled.

Description

A kind of method of Physical process complexation of metal ions waste water
Technical field:
The invention belongs to metal ion field of waste water treatment, particularly a kind of Physical equipment of circuit card, flexible electromagnetic shielding fabric, non-ferrous metal metallurgy, electronics, plating and surface treatment workshop and product cleaning are produced messy and treatment process of the complexation of metal ions waste water that production line utilizes can not be returned.
Background technology:
Metal current ion processing mainly adopts chemical precipitation method, ion exchange method and membrane processing method, but the use range that this several method has it certain and limitation, chemical precipitation method floor space is large, consume chemicals quality large, seriously polluted and less stable, ion exchange method treatment capacity is limited and regenerate cumbersome, the easy film blocking of membrane processing method, change frequent, cost is higher.
In order to overcome the deficiency that in existing treatment process, floor space is large, cost is high and technique is loaded down with trivial details, the present invention adopts a kind of physical treatment method of complexation of metal ions, not only equipment is simple for the method, floor space is little, and without the need to adding chemical substance, achieve the extraction of complexation of metal ions and the recycling of water resources.
Summary of the invention:
The object of the invention is the shortcoming overcoming above-mentioned existing metal ion method of wastewater treatment, a kind of method of Physical process complexation of metal ions waste water is provided, the method is without the need to adding chemical substance, and technique is simple, better achieves the extraction of complexation of metal ions and the recycling of water resources.
In order to reach above-mentioned purpose, the technical solution used in the present invention is:
A method for Physical process complexation of metal ions waste water, comprises following operation steps:
(1) waste water isolates fresh water and dense water by micro-filtration treater at a high speed under the high-pressure pump effect of 1.5-4.5MPa pressure;
(2) fresh water that step (1) is separated adopts nanofiltration membrane treatment to be again separated, the dense water warp that step (1) is separated
Return after crossing pressure filter filtration, purification and collect pond;
(3) fresh water of step (2) nanofiltration membrane separation adopts reverse osmosis equipment for purifying to carry out secondary purification, adds precise filtering device and repeatedly concentrate and sun power evaporation concentration before the dense hydromining of step (2) nanofiltration membrane separation is used in nanofiltration thickening equipment;
(4) carry out DC electrolysis to the liquid of step (3) evaporation concentration, out, liquid returns to former pond to METAL EXTRACTION.
Object of the present invention also realizes by following technical scheme:
The described micro-filtration treater of step (1) adopts the microfiltration membrane of 0.3-0.8 μm.
The intake pressure of step (2) described nanofiltration membrane treatment is 1-4MP.
The intake pressure of the described reverse osmosis equipment for purifying of step (3) is 0.5-2MPa.
Step (3) described precise filtering device is the accurate filter of 0.1 μm-0.5 μm;
Concentrated and sun power evaporation concentration process repeatedly described in step (3), when repeatedly concentrated ion is at more than 8g/L, sun power vapo(u)rization system is utilized to carry out degree of depth evaporation concentration, adopt when the ion of evaporation concentration is at more than 15g/L and carry out electrolysis by series of cells under 0.5A-5A direct current under voltage stabilizing state, when electrolysis is to below 3g/L, water returns nanofiltration thickening equipment again and concentrates, circular treatment like this.
Described waste water is the comprehensive wastewater of the muddy and metal content of flexible electromagnetic shielding fabric waste water or non-ferrous metal metallurgy waste water or the plating shop surface water, rinse water, wash-down water etc. at 0-1g/L;
Adopt in nanofiltration concentration process of the present invention and enter film end at dense water and add a precise filtering device, by the solids extract that parses out, prevent film to block, effectively overcome film in existing film treating processes and block that the replacement frequency brought is high, high in cost of production problem, for protective membrane system is also monitored the ionic concn in nanofiltration concentration process repeatedly, just no longer continue concentrated when concentrated ion is at more than 8g/L, but utilize sun power vapo(u)rization system to carry out evaporation concentration, when being concentrated to more than 15g/L, enter electrolytic system and carry out electrolysis, utilize the mode of electrolysis, metal ion is passed through series of cells electrolysis under 0.5A-5A direct current under voltage stabilizing state, when electrolysis to metal ion at below 3g/L time, water returns nanofiltration concentration systems again and concentrates, circular treatment like this, sun power is utilized to realize the recycling of metal and water resources.
Accompanying drawing illustrates:
Accompanying drawing 1 is the process flow sheet of Physical process complexation of metal ions waste water of the present invention.
Wherein, 1-collects pond, 2-micro-filtration treater, 3,4,7,8-intermediate water tank, 5-pressure filter, 6-nanofiltration concentrates film group, 9-accurate filter, 10-double-stage reverse osmosis system, 11-electrolyzer group, water tank, 13 sun power vapo(u)rization systems in 12-.
Embodiment:
Below in conjunction with accompanying drawing, the inventive method is described in further detail.
By containing higher turbidity and metal content to collect at the comprehensive wastewater of about 0-1g/L and collect in pond 1, by high-pressure pump, under the pressure of 1.5-4.5MPa, entering micro-filtration treater 2 isolates fresh water and dense water at a high speed, fresh water by intermediate water tank 4 cushion after enter nanofiltration concentrate film group 6 process be again separated, dense water enters pressure filter 5 by intermediate water tank 3 and carries out further purification separation, purify liquid, liquid returns to former pond 1; Dense water after nanofiltration concentrates film group 6 separation is concentrated repeatedly in nanofiltration system after being filtered by intermediate water tank 8 and accurate filter 9, enter sun power vapo(u)rization system 13 after being concentrated to more than 8g/L and carry out evaporation concentration, when being concentrated to more than 15g/L, enter electrolytic system 11 and carry out electrolysis, when electrolysis enters intermediate water tank 4 again to during below 3g/L, fresh water after nanofiltration concentrates film group 6 process carries out secondary purification in double-stage reverse osmosis system 10 under intake pressure is 0.5-2MPa, pure water after process enters middle water tank 12, for subsequent use as reuse water.

Claims (7)

1. a method for Physical process complexation of metal ions waste water, is characterized in that, comprises following operation steps:
(1) waste water isolates fresh water and dense water by micro-filtration treater at a high speed under the high-pressure pump effect of 1.5-4.5MPa pressure;
(2) fresh water that step (1) is separated adopts nanofiltration membrane treatment to be again separated, and the dense water that step (1) is separated returns and collects pond after Filter Press purification;
(3) fresh water of step (2) nanofiltration membrane separation adopts reverse osmosis equipment for purifying to carry out secondary purification, add precise filtering device before the dense hydromining of step (2) nanofiltration membrane separation is used in nanofiltration thickening equipment repeatedly to concentrate, then enter the further concentration of sun power vapo(u)rization system;
(4) carry out electrolysis to the liquid of step (3) evaporation concentration, out, liquid returns to former pond to METAL EXTRACTION.
2. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, is characterized in that, the described micro-filtration treater of step (1) adopts the microfiltration membrane of 0.3-0.8 μm.
3. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, it is characterized in that, the intake pressure of step (2) described nanofiltration membrane treatment is 1-4MPa.
4. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, it is characterized in that, the intake pressure of the described reverse osmosis equipment for purifying of step (3) is 0.5-2MPa.
5. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, it is characterized in that, step (3) described precise filtering device is the accurate filter of 0.1 μm-0.5 μm.
6. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, it is characterized in that, step (3) described concentration, adopt when concentrated ion is at more than 15g/L and carry out electrolysis by series of cells under 0.5A-5A direct current under voltage stabilizing state, concentrate when electrolysis returns nanofiltration thickening equipment again to water during below 3g/L, circular treatment like this.
7. the method for a kind of Physical process complexation of metal ions waste water as claimed in claim 1, it is characterized in that, described waste water is the comprehensive wastewater of the muddy and metal content of flexible electromagnetic shielding fabric waste water or non-ferrous metal metallurgy waste water or the plating shop surface water, rinse water, wash-down water etc. at 0-1g/L.
CN201410586549.3A 2014-10-27 2014-10-27 Method for physically treating complexing metal ion wastewater Pending CN104310673A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201410586549.3A CN104310673A (en) 2014-10-27 2014-10-27 Method for physically treating complexing metal ion wastewater

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Application Number Priority Date Filing Date Title
CN201410586549.3A CN104310673A (en) 2014-10-27 2014-10-27 Method for physically treating complexing metal ion wastewater

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587472A (en) * 2016-11-29 2017-04-26 环境保护部华南环境科学研究所 Resource recycling method for palladium-containing electroplating wastewater
CN106673285A (en) * 2016-11-29 2017-05-17 环境保护部华南环境科学研究所 Resource recycling method for gold-containing electroplating wastewater
CN106865852A (en) * 2017-02-27 2017-06-20 环境保护部华南环境科学研究所 A kind of resource recycle method of argentiferous electroplating wastewater
CN111517556A (en) * 2020-05-14 2020-08-11 逸辰环保科技(厦门)有限公司 Electroplating wastewater treatment process and system

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KR20030060304A (en) * 2002-01-08 2003-07-16 정건용 Method for Recycling the Valuable Components from Cleaning Wastewater of Printed Circuit Board
CN1868925A (en) * 2005-05-26 2006-11-29 王俊川 Circulation utilization technology and equipment for electroplating waste water separated by integrated membrane
CN101318732A (en) * 2008-06-19 2008-12-10 江苏苏净集团有限公司 Process for recycling electroplating waste to prepare pure water
CN201427903Y (en) * 2009-04-02 2010-03-24 厦门市天泉鑫膜科技有限公司 Nickel electroplating rinse water cleaning system
CN101805083A (en) * 2010-03-26 2010-08-18 南通市申海特种镀饰有限责任公司 Process method for recycling precious metal from electroplating wastewater
CN201932962U (en) * 2010-12-02 2011-08-17 东莞市纯源水处理设备有限公司 Metal wastewater treatment device
CN102358644A (en) * 2011-06-28 2012-02-22 中南大学 Membrane treatment process for heavy metal waste water generated during PCB production process
CN102399033A (en) * 2010-09-07 2012-04-04 四川三友环保工程技术有限公司 Novel technology for treating vanadium precipitation-containing industrial wastewater by nanofiltration membrane separation method
CN202912799U (en) * 2012-10-09 2013-05-01 苏州卓融水处理科技有限公司 Comprehensive recycling system of metal plating wastewater resources
CN103539303A (en) * 2013-11-15 2014-01-29 中冶华天工程技术有限公司 Electroplating wastewater treating and recycling process and system

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR20030060304A (en) * 2002-01-08 2003-07-16 정건용 Method for Recycling the Valuable Components from Cleaning Wastewater of Printed Circuit Board
CN1868925A (en) * 2005-05-26 2006-11-29 王俊川 Circulation utilization technology and equipment for electroplating waste water separated by integrated membrane
CN101318732A (en) * 2008-06-19 2008-12-10 江苏苏净集团有限公司 Process for recycling electroplating waste to prepare pure water
CN201427903Y (en) * 2009-04-02 2010-03-24 厦门市天泉鑫膜科技有限公司 Nickel electroplating rinse water cleaning system
CN101805083A (en) * 2010-03-26 2010-08-18 南通市申海特种镀饰有限责任公司 Process method for recycling precious metal from electroplating wastewater
CN102399033A (en) * 2010-09-07 2012-04-04 四川三友环保工程技术有限公司 Novel technology for treating vanadium precipitation-containing industrial wastewater by nanofiltration membrane separation method
CN201932962U (en) * 2010-12-02 2011-08-17 东莞市纯源水处理设备有限公司 Metal wastewater treatment device
CN102358644A (en) * 2011-06-28 2012-02-22 中南大学 Membrane treatment process for heavy metal waste water generated during PCB production process
CN202912799U (en) * 2012-10-09 2013-05-01 苏州卓融水处理科技有限公司 Comprehensive recycling system of metal plating wastewater resources
CN103539303A (en) * 2013-11-15 2014-01-29 中冶华天工程技术有限公司 Electroplating wastewater treating and recycling process and system

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106587472A (en) * 2016-11-29 2017-04-26 环境保护部华南环境科学研究所 Resource recycling method for palladium-containing electroplating wastewater
CN106673285A (en) * 2016-11-29 2017-05-17 环境保护部华南环境科学研究所 Resource recycling method for gold-containing electroplating wastewater
CN106587472B (en) * 2016-11-29 2018-03-23 环境保护部华南环境科学研究所 A kind of recycling recoverying and utilizing method of the electroplating wastewater containing palladium
CN106673285B (en) * 2016-11-29 2018-03-23 环境保护部华南环境科学研究所 A kind of recycling recoverying and utilizing method containing golden electroplating wastewater
CN106865852A (en) * 2017-02-27 2017-06-20 环境保护部华南环境科学研究所 A kind of resource recycle method of argentiferous electroplating wastewater
CN111517556A (en) * 2020-05-14 2020-08-11 逸辰环保科技(厦门)有限公司 Electroplating wastewater treatment process and system

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Application publication date: 20150128