CN203486944U - Online electro-deposition device for metal waste water - Google Patents
Online electro-deposition device for metal waste water Download PDFInfo
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- CN203486944U CN203486944U CN201320608169.6U CN201320608169U CN203486944U CN 203486944 U CN203486944 U CN 203486944U CN 201320608169 U CN201320608169 U CN 201320608169U CN 203486944 U CN203486944 U CN 203486944U
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- outlet
- dashpot
- deposition device
- outer circulation
- galvanic deposit
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Abstract
The utility model relates to an online electro-deposition device for metal waste water. The online electro-deposition device is arranged close to a production line and mainly comprises a buffering slot, an electro-deposition chamber and a circulation pump; the buffering slot is provided with a buffering slot inlet and a buffering slot outlet; the buffering inlet is lower than the outlet of a metal waste water source on the production line; the electro-deposition chamber is provided with an electro-deposition chamber inlet and an electro-deposition chamber outlet; the circulation pump is provided with a circulation pump inlet and a circulation pump outlet; the circulation pump inlet is connected with the buffering slot outlet; the circulation pump outlet is divided into an inner circulation branch and an outer circulation branch; the inner circulation branch is connected with the electro-deposition chamber inlet, passes by the electro-deposition chamber and returns to the buffering slot from the electro-deposition chamber outlet; the outer circulation branch is connected with the metal waste water source by a flow returning pipeline and is connected with the buffering slot inlet by the metal waste water source. The inner circulation branch is provided with an inner circulation regulation valve and the outer circulation branch is provided with an outer circulation regulation valve, so the flows of the inner circulation branch and the outer circulation branch are regulated respectively.
Description
Technical field
The utility model relates to metallic wastewater treatment process, especially relates to a kind of online electric deposition device of metallic wastewater.
Background technology
Electroplating industry is widely used various metals, as copper, silver, gold, tin, nickel etc.In process of production, most of metal can be converted into metal plating, becomes a part for product.But also there is quite a few metal to enter among waste water, become the source of pollution of heavy metal.In order to prevent heavy metal contamination, generally adopt chemical precipitation method to process waste water, the metal ion in waste water is converted into insoluble mud.This method causes valuable metals resources to become waste, and has environmental risk, is not the most suitable method of processing metallic wastewater.
Plating is a kind of technology that by electrochemical method, the metal ion in plating solution is reduced to metal and is covered in plating piece surface.Proposed to make in this way the metal ion in waste water reduced and be deposited on negative electrode (abbreviation galvanic deposit), thereby not only reclaimed metals resources but also prevent from polluting.
The metal that at present galvanic deposit is reclaimed in waste water generally adopts off-line recovery method, and the solution that contains metal ion is regularly collected certain container beyond production line, then uses electric deposition device by batch recycling.Compare with off-line recovery method, the online recycling method that directly reclaims metal from production line can reclaim the metal waste water continuously, and flow process is shorter, takes up an area still less, operate easylier, and investment is province more also.
Fig. 1 take the online galvanic deposit that acid copper-plating waste water is example to reclaim schematic diagram.Shown in Fig. 1, plating piece immerses accumulator tank 12 after electroplating in Acid copper bath 11, and plating piece is brought acid copper plating solution into accumulator tank 12, and in accumulator tank 12, copper ion concentration constantly accumulates rising.Electric deposition device 13 is connected with recycle pump 15 by pipeline 14 with accumulator tank 12.Recycle pump 15 is extracted the solution of accumulator tank 12 out, sends into electric deposition device 13, returns to accumulator tank 12 after electrolysis, constantly circulation.In circulation, electric deposition device 13 is reduced to metallic copper by the cupric ion in solution and is deposited on negative electrode in the mode of electrochemical reduction, and copper is recycled, and the copper ion concentration in accumulator tank 12 is controlled.When the electrodeposition rate of copper and plating solution, bring the speed of accumulator tank 12 into when identical, in accumulator tank 12, copper ion concentration reaches balance.
Because being generally under uncovered atmospheric pressure state, electric deposition device 13 works, to in working cycle, reach the balance of the water yield, the position of electric deposition device 13 water outlets must be higher than accumulator tank 12, make through the waste water of electric deposition device all overflow return to accumulator tank, reach flow equilibrium.
Fig. 2 is the relative position schematic diagram of online galvanic deposit recovery system and accumulator tank.Shown in Fig. 2, when electric deposition device 13 overflows in the satisfiable situation of condition of mouth of a river 13a higher than accumulator tank 12, by the mode of Fig. 2, carry out online recycling the simplest.But along with producing automatization, the mass-producing of equipment, production line is tending towards maximizing, and accumulator tank 12 is general all higher than the mouth of a river that overflows of electric deposition device 13, and Fig. 2 mode has been not suitable with most production lines.
By raising electric deposition device 13, seem also can realize the mode of Fig. 2, but can bring two large problems.On the one hand, raise the rear operation of equipment of electric deposition device 13 and safeguard the difficulty that becomes, the negative electrode that has particularly deposited metal takes out inconvenience, and retrieving arrangement is done service platform and will be taken too much production site if.On the other hand, the bore of the upflow tube of electric deposition device 13 is generally larger, may cross over the passage of production line higher than the upflow tube of accumulator tank, hinders production operation personnel's walking.
If being designed to airtight withstand voltage structure, electric deposition device 13 seems also can solve the water balance problem in online application.But have gas evolution in electrolytic process on anode and negative electrode, gas build has safety problem, airtight electric deposition device 13 makes troubles to regular job in addition, and particularly the taking-up of negative electrode and replacing become difficult.The online application that therefore, realize galvanic deposit recovery technology must solve the flow equilibrium problem that production line and galvanic deposit retrieving arrangement potential difference cause.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of online electric deposition device of metallic wastewater, to solve aforementioned flow equilibrium problem.
The utility model is to solve the problems of the technologies described above the online electric deposition device that the technical scheme adopting is a kind of metallic wastewater of proposition, is arranged near production line, and this online electric deposition device comprises dashpot, galvanic deposit chamber and recycle pump.This dashpot has dashpot import and dashpot outlet, and the height of this dashpot import is lower than the open height that goes out in the metallic wastewater source on production line.This galvanic deposit chamber has the import of galvanic deposit chamber and the outlet of galvanic deposit chamber, in this galvanic deposit chamber, is furnished with negative electrode and anode.This recycle pump has pump inlet and circulating-pump outlet, this pump inlet connects this dashpot outlet, this circulating-pump outlet is divided into internal recycle along separate routes and outer circulation shunt, this internal recycle connects this galvanic deposit chamber import along separate routes, behind this galvanic deposit chamber, from this galvanic deposit chamber outlet, get back to this dashpot, this outer circulation connects this metallic wastewater source through a reflux line along separate routes, through this metallic wastewater source, connects this dashpot import.This internal recycle is provided with internal recycle variable valve along separate routes, and this outer circulation is provided with outer circulation variable valve along separate routes, to regulate respectively internal recycle along separate routes and outer circulation flow along separate routes.
In an embodiment of the present utility model, in this internal recycle shunt, be also provided with internal recycle under meter, in this outer circulation along separate routes, be also provided with outer circulation under meter.
In an embodiment of the present utility model, this metallic wastewater source is accumulator tank, the overflow port that the outlet in this metallic wastewater source is accumulator tank.
In an embodiment of the present utility model, in this galvanic deposit chamber, be furnished with multipair negative electrode and anode, between negative electrode and anode, there is suitable pole span.
In an embodiment of the present utility model, this negative electrode and anodic bonding are to the adjustable direct supply of electric current.
The utility model, owing to adopting above technical scheme, makes it compared with prior art, by inside and outside bicirculating mode, has solved in galvanic deposit recovery, and the flow equilibrium problem that production line and electric deposition device potential difference cause, easily realizes online galvanic deposit.
Accompanying drawing explanation
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent, below in conjunction with accompanying drawing, embodiment of the present utility model is elaborated, wherein:
Fig. 1 is that schematic diagram is reclaimed in the online galvanic deposit of acid copper-plating waste water.
Fig. 2 is the relative position schematic diagram of online electric deposition device and accumulator tank.
Fig. 3 is the recovery schematic diagram of the electric deposition device of the utility model one embodiment.
Embodiment
Fig. 3 is the recovery schematic diagram of the electric deposition device of the utility model one embodiment.Shown in Fig. 3, the electric deposition device 300 of the present embodiment is arranged near the accumulator tank 301 of production line, and distance is generally no more than 50m.Electric deposition device 300 can comprise the circulation line that galvanic deposit chamber 310, dashpot 320 and the recycle pump 330 of take are main body.
Multipair yin, yang electrode is installed in galvanic deposit chamber 310.Negative electrode 314 is connected with direct supply 315 respectively with anode 313, and the metal ion in waste water is reduced into metal at negative electrode 314 electron gains.In preferred embodiment, in order to reduce the concentration polarization under low consistency conditions, improve the quality of current efficiency and recovery metal, can adopt the electrode arrangement mode of little pole span (being generally 10mm-50mm), and following waste water pump circulation measure.
A feature of the present embodiment is to use a recycle pump 330 to realize internal recycle and the outer circulation of waste water simultaneously.Dashpot outlet 322 is connected with pump inlet 331.Circulating-pump outlet 332 is divided into internal recycle along separate routes and outer circulation shunt.Recycle pump 330 from dashpot 320 sucking-offs, is divided into two-way by waste water, and dashpot 320 is returned to after entering galvanic deposit chamber 310 in a road, forms internal recycle along separate routes.Position on production line is sent into higher than the accumulator tank 301 of electric deposition device 300 in an other road, and the waste water that road flow is equal therewith returns to dashpot 320 by the overflow port 302 of accumulator tank 301 through dashpot import 321, forms outer circulation along separate routes.
For instance, recycle pump 330 is Q from the flow of dashpot 320 sucking-offs
0, internal recycle flow is along separate routes Q
1, outer circulation flow is along separate routes Q
2, Q
0=Q
1+ Q
2.Q
0size by the pressure-losses of circulate pump performance and system, determined, Q
1and Q
2size can distribute according to processing condition.Therefore,, by internal recycle shunt and outer circulation layout along separate routes, the present embodiment under the condition lower than production line, still can move required flow equilibrium by implement device at electric deposition device.
The pipeline annexation example of the present embodiment is as follows, but is appreciated that these annexations are not in order to limit the utility model.For instance, two are exemplified as between interconnective parts and can also be connected with as required other parts.
Specifically, internal recycle is received galvanic deposit chamber import 311 from circulating-pump outlet 332 through internal recycle variable valve 333 and internal recycle under meter 334 along separate routes, and galvanic deposit chamber outlet 312 is connected to dashpot 320.Outer circulation is received accumulator tank 301 from circulating-pump outlet 332 through outer circulation variable valve 335, outer circulation under meter 336 and reflux line 337 along separate routes.Between accumulator tank overflow port 302 and dashpot import 321, with overflow spout 303, be connected.As can be seen, the height of overflow port 302 is higher than dashpot import 321.When actual design, can make the height of overflow port 302 higher than tens of centimetres of dashpot import 321.
Start recycle pump 330, by internal recycle variable valve 333 and outer circulation variable valve 335, regulate respectively internal recycle along separate routes and outer circulation flow along separate routes.
Internal recycle waste water along separate routes enters galvanic deposit chamber 310, passes through from bottom to top negative electrode 314 and anode 313, and under the effect of direct supply 315, the metal ion in waste water is reduced into metal at negative electrode 314.Waste strength turns back to dashpot 320 after declining.Circulation and so forth, in dashpot 320, the concentration of metal ions of waste water is tending towards declining.
Outer circulation waste water along separate routes enters the accumulator tank 301 of production line, and the waste water that flow is equal therewith overflows from accumulator tank overflow port 302, and nationality potential difference is returned to dashpot 320 by upflow tube 303 from dashpot import 321.Because electroplate liquid in production process is constantly brought accumulator tank 301 into, so concentration of metal ions is tending towards rising in accumulator tank 301.
Because internal recycle and outer circulation share a dashpot 320, galvanic deposit is reclaimed and is caused that concentration of metal ions declines and electroplate liquid is brought into and caused that the factor of concentration of metal ions rising is offset at dashpot 320.When the speed that the speed that reclaims metal ion when galvanic deposit and metal ion are brought accumulator tank into from plating tank equates, in accumulator tank 301, the concentration of metal ion reaches balance.If galvanic deposit is reclaimed the speed of metal and is greater than the speed that plating solution is brought into, the concentration of metal ions in accumulator tank 301 declines, otherwise rises.By analysis and the direct supply current setting of accumulator tank 301 concentration of metal ions, concentration of metal ions in accumulator tank 301 can be stabilized in to predetermined scope.
Due to the effect of electric deposition device 300, the metal ion in waste water is recycled with the form of metal, realizes resource utilization, and in accumulator tank, the concentration of metal ion is controlled simultaneously, has greatly reduced the discharge of pollutent, and has been conducive to the recycling of water resources.
Below for the example of a practical application of the present utility model.
After the acid copper-plating station of certain electroplating assembly line, be provided with the accumulator tank of 2000 liters of volumes, while declining because of solution evaporation liquid level in plating tank, with the waste water in a small amount of accumulator tank, add in plating tank, now in accumulator tank, liquid level decline need to supplement tap water.Because plating tank solution evaporation amount is less, need magnitude of recruitment also few, bring the cupric ion total amount of accumulator tank into far away higher than the amount that adds to coating bath, so the copper ion concentration in accumulator tank raises gradually, copper ion concentration in waste discharge is corresponding rising also, and cleaning performance is variation also.For addressing the above problem, when copper ion concentration rises to 20g/L left and right, the waste water of removable parts or whole accumulator tanks, is discharged into waste water processing station.Because the concentration of relief liquor is up to 20g/L, can cause load impact to normal wastewater treatment, affect the qualified discharge of copper.
The copper that the utility model is applied to above-mentioned production line reclaims, and workflow and Fig. 3 are basic identical.This production line is brought the about 4L/h of plating solution amount of accumulator tank into from Acid copper bath after tested, and copper ion concentration is 50g/L, and the speed of bringing into of cupric ion is 200g/h.Should use-case be equipped with galvanic deposit and have reclaimed the device of ability 250g/h.The working flow Q of the recycle pump that electric deposition device is equipped with
0about 10m
3/ h, regulates outer circulation variable valve along separate routes, makes outer circulation flow Q
2be maintained at about 1m
3/ h, internal recycle flow Q
1about 9m
3/ h.Electric deposition device is equipped with titanium-based noble metal anode and stainless steel cathode, and negative electrode and anode spacing are 30mm, and adjusting cathode current density is 0.5A/dm
2.In accumulator tank, the target equilibrium concentration of cupric ion is 5g/L.Operation result is as follows:
The electrolytic recovery speed of cupric ion: 190-215g/h,
The equilibrium concentration of accumulator tank: 4.8-5.2g/L,
Reclaim the form of metal: laminated metal copper, purity 99.93%,
The rate of recovery of copper: 90%,
Current efficiency: 80%.
Thus, should use-case solving on the basis of the flow equilibrium problem that production line and electric deposition device potential difference cause, realizing the online recycling of metal.
Embodiment of the present utility model not only can be for the metal recovery in electroplating wastewater, can also be for the metal recovery of other metallic wastewater.By embodiment of the present utility model, can, in the inlet height that meets electric deposition device under the exit condition lower than metallic wastewater source, realize flow equilibrium.
Although the utility model is described with reference to current specific embodiment, but those of ordinary skill in the art will be appreciated that, above embodiment is only for the utility model is described, in the situation that not departing from the utility model spirit, also can make variation or the replacement of various equivalences, therefore, as long as the variation of above-described embodiment, modification all will be dropped in the application's the scope of claims within the scope of connotation of the present utility model.
Claims (5)
1. an online electric deposition device for metallic wastewater, is arranged near production line, it is characterized in that comprising:
Dashpot, this dashpot has dashpot import and dashpot outlet, and the height of this dashpot import is lower than the open height that goes out in the metallic wastewater source on production line;
Galvanic deposit chamber, has the import of galvanic deposit chamber and the outlet of galvanic deposit chamber, in this galvanic deposit chamber, is furnished with negative electrode and anode;
Recycle pump, there is pump inlet and circulating-pump outlet, this pump inlet connects this dashpot outlet, this circulating-pump outlet is divided into internal recycle along separate routes and outer circulation shunt, this internal recycle connects this galvanic deposit chamber import along separate routes, behind this galvanic deposit chamber, from this galvanic deposit chamber outlet, gets back to this dashpot, this outer circulation connects this metallic wastewater source through a reflux line along separate routes, through this metallic wastewater source, connects this dashpot import;
This internal recycle is provided with internal recycle variable valve along separate routes, and this outer circulation is provided with outer circulation variable valve along separate routes, to regulate respectively internal recycle along separate routes and outer circulation flow along separate routes.
2. online electric deposition device as claimed in claim 1, is characterized in that, in this internal recycle shunt, is also provided with internal recycle under meter, in this outer circulation along separate routes, is also provided with outer circulation under meter.
3. online electric deposition device as claimed in claim 1, is characterized in that, this metallic wastewater source is accumulator tank, the overflow port that the outlet in this metallic wastewater source is accumulator tank.
4. online electric deposition device as claimed in claim 1, is characterized in that, in this galvanic deposit chamber, is furnished with multipair negative electrode and anode, has suitable pole span between negative electrode and anode.
5. online electric deposition device as claimed in claim 1, is characterized in that, this negative electrode and anodic bonding are to the adjustable direct supply of electric current.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608169.6U CN203486944U (en) | 2013-09-29 | 2013-09-29 | Online electro-deposition device for metal waste water |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320608169.6U CN203486944U (en) | 2013-09-29 | 2013-09-29 | Online electro-deposition device for metal waste water |
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| Publication Number | Publication Date |
|---|---|
| CN203486944U true CN203486944U (en) | 2014-03-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320608169.6U Expired - Fee Related CN203486944U (en) | 2013-09-29 | 2013-09-29 | Online electro-deposition device for metal waste water |
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| Country | Link |
|---|---|
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512946A (en) * | 2013-09-29 | 2015-04-15 | 上海轻工业研究所有限公司 | Online electrodeposition method of metal wastewater, and apparatus thereof |
| CN106746058A (en) * | 2017-02-21 | 2017-05-31 | 上海大学 | The method for removing Antimony in Waste Water |
| CN108914197A (en) * | 2018-09-19 | 2018-11-30 | 广东天承科技有限公司 | A kind of on-Line Monitor Device and its application |
-
2013
- 2013-09-29 CN CN201320608169.6U patent/CN203486944U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104512946A (en) * | 2013-09-29 | 2015-04-15 | 上海轻工业研究所有限公司 | Online electrodeposition method of metal wastewater, and apparatus thereof |
| CN106746058A (en) * | 2017-02-21 | 2017-05-31 | 上海大学 | The method for removing Antimony in Waste Water |
| CN108914197A (en) * | 2018-09-19 | 2018-11-30 | 广东天承科技有限公司 | A kind of on-Line Monitor Device and its application |
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|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140319 Termination date: 20160929 |