CN106319564B - A kind of method of the method and electrolytic metal ion of metallic copper, Treatment of Copper ion waste water - Google Patents
A kind of method of the method and electrolytic metal ion of metallic copper, Treatment of Copper ion waste water Download PDFInfo
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- CN106319564B CN106319564B CN201610822080.8A CN201610822080A CN106319564B CN 106319564 B CN106319564 B CN 106319564B CN 201610822080 A CN201610822080 A CN 201610822080A CN 106319564 B CN106319564 B CN 106319564B
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C1/00—Electrolytic production, recovery or refining of metals by electrolysis of solutions
- C25C1/12—Electrolytic production, recovery or refining of metals by electrolysis of solutions of copper
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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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25C—PROCESSES FOR THE ELECTROLYTIC PRODUCTION, RECOVERY OR REFINING OF METALS; APPARATUS THEREFOR
- C25C7/00—Constructional parts, or assemblies thereof, of cells; Servicing or operating of cells
- C25C7/06—Operating or servicing
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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Abstract
The present invention relates to sewage treatment fields, specifically, providing a kind of method of the method and electrolytic metal ion of metallic copper, Treatment of Copper ion waste water.The method of above-mentioned Treatment of Copper ion waste water, comprising the following steps: S1, separate copper ions waste water solid；S2, the copper ions waste water after separation of solid and liquid is passed through in electrolytic cell, and with 1000-15000 ls/h of flow velocity in electrolytic cell rotational flow, in 50-1200A/m2Current density formed electric field action under, can be gradually in cathode precipitating metal copper.This method has the advantages that simple process, process flow are short, at low cost, treatment effeciency is high and concentration for the treatment of range is wide.
Description
Technical field
The present invention relates to sewage treatment fields, in particular to a kind of method of metallic copper, Treatment of Copper ion waste water
And the method for electrolytic metal ion.
Background technique
Electrolysis is the process that electric current causes chemical change by substance, and chemical change is that substance loses or obtain electronics
The process of (oxidation or reduction).Electrolytic process is carried out in electrolytic cell, electrolytic cell be by be immersed in respectively containing it is positive and negative from
Two electrodes of yin, yang in the solution of son are constituted, and electric current flows into negative electrode (cathode), positively charged cation migration in solution
To cathode, and in conjunction with electronics, become neutral element or molecule；Negatively charged anion moves to another electrode (sun
Pole), electronics is provided, neutral element or molecule are become.
The method of traditional electrolyte metal ion is that the solution containing metal ion is passed through in electrolytic cell, logical to two electrodes
The electrolysis of metal ion can be realized in electricity.But this conventional electrolytic methods can be influenced in electrolytic process by a variety of situations, such as
Ion concentration, ion rheobase, yin-yang electrode potential, concentration polarization, pH value, overvoltage etc., due to depositing for above-mentioned rough sledding
Prevent conventional electrolytic methods from the case where wide concentration range and high current density complete metal ion electrolysis ask
Topic.
Chip factory's sulfuric acid copper waste water is a kind of highly acidity, low-concentration sulfuric acid copper waste water, and the treatment process of this waste water is most
It is the method using alkaline matter tune pH value, the copper in waste water is precipitated into copper carbonate precipitating or Kocide SD precipitates, was passed through
It is further processed again after filter separation.Acidity is higher in waste water, can greatly improve the dosage of alkaline matter, lead to waste water
Secondary pollution is easily caused during processing cost is high, and the copper carbonate precipitating of output is further processed,
Great hidden danger is brought for wastewater treatment.Therefore, highly acidity, low-concentration sulfuric acid copper waste water are handled using such mode, not only labor
Fatigue resistance is larger, working environment is poor, and high labor cost, metal recovery rate are lower.
In view of this, the present invention is specifically proposed.
Summary of the invention
The first object of the present invention is to provide a kind of method of electrolytic metal ion, this method have simple process, at
This low and high-efficient advantage.
The second object of the present invention is to provide a kind of method of Treatment of Copper ion waste water, and this method has technique letter
The advantage single, process flow is short, at low cost, treatment effeciency is high and concentration for the treatment of range is wide.
The third object of the present invention is to provide a kind of metallic copper, and the metallic copper is using above-mentioned Treatment of Copper ion waste water
Method is prepared, and the metallic copper purity is high being prepared using the above method, preparation efficiency is high, and can be prepared into as needed
Powder or plate.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
The present invention provides a kind of methods of electrolytic metal ion, comprising the following steps:
S1, provide the solution of metal ion: the solution contains at least two different metal ions, different metal from
The theoretical deposition potential of son is different；
S2, the solution is passed through in electrolytic cell, and quickly flowing of pressurizeing in electrolytic cell, under electric field action
The metal with highest theory deposition potential is gradually precipitated in cathode.
CSED electrolysis tech is a kind of using solution movement pressurization flowing working method, carries out selectivity to valuable metal
It is electrolysed the new technology of (electrodeposition).CSED electrolysis tech is to be intended to be extracted based on the difference of each metal ion theory deposition potential
As long as metal have biggish potential difference with other metal ions in solution system, the higher metal of current potential is easy to excellent in cathode
It is first precipitated, by high speed rotation liquid stream, eliminates the unfavorable factor to electrolysis, avoid traditional electrolyte (electrodeposition) mode and be electrolysed
It is influenced in the process by many factors (ion concentration, ion rheobase, yin-yang electrode potential, concentration polarization, pH value, overvoltage etc.)
Rough sledding, the metal product of high quality can be produced by simple technical conditions, while above-mentioned electrolytic method can be complete
The wide concentration range (from 0. more than zero grams per liter to several hundred grams per liters) that cannot be completed at conventional electrolytic methods, high current density
(400A/m2More than) in the case of metal ion electrolysis, and produce different types of metal product (plate or powder).
It should be noted that above-mentioned quick flowing refers to flow velocity at 1000 ls/h or more.
The method of above-mentioned electrolytic metal ion can be used in handling waste water, and at least two reasons are contained in the waste water
By the different metal of deposition potential, directly by waste water be passed through in electrolytic cell be electrolysed, the above method particularly suitable for sewage at
It manages industry and the selective electrolysis (electrodeposition) of low concentration, solution complex in composition is separated and purified, can effectively solve at other sewage
The problem that reason mode pollutes environment, waste water removal of impurities difficulty is big, process flow is long, high production cost and overall efficiency are low.
The present invention also provides a kind of methods of Treatment of Copper ion waste water, comprising the following steps:
S1, copper ions waste water solid is separated；
S2, the copper ions waste water after separation of solid and liquid is passed through in electrolytic cell, and with 1000-15000 ls/h of flow velocity
It pressurizes in electrolytic cell and quickly flows, in 50-1200A/m2Current density formed electric field action under, can be gradually in cathode
Precipitating metal copper.
Copper ions waste water after separation of solid and liquid is existed under the action of circulating pump with 1000-15000 ls/h of flow velocity
Mechanical increase rotation flows up in electrolytic cell；Under the action of electric field, hydroxide radical anion is to anode displacement, in solution
Copper ion to cathode displacement, copper ion obtains electronic deposition precipitating metal copper in cathode, and anion loses electricity in anode
Sub- precipitated oxygen.It is packed and stored after scalding when the metallic copper on cathode reaches constant weight and can go out slot.
It should be noted that in above-mentioned copper ions waste water in addition to containing copper ion, also containing other theoretical deposition potentials
The metal different from copper ion, the wherein theoretical deposition potential highest of copper ion.
In the present invention, the typical but non-limiting flow velocity is 1000 ls/h, 2000 ls/h, 3000 liters/small
When, 4000 ls/h, 5000 ls/h, 6000 ls/h, 7000 ls/h, 8000 ls/h, 9000 ls/h,
10000 ls/h, 11000 ls/h, 12000 ls/h, 13000 ls/h, 14000 ls/h or 15000 liters/small
When.
In the present invention, the typical but non-limiting current density is 50A/m2、100A/m2、200A/m2、300A/m2、
400A/m2、500A/m2、600A/m2、700A/m2、800A/m2、900A/m2、1000A/m2、1100A/m2Or 1200A/m2。
The method of above-mentioned Treatment of Copper ion waste water has simple process, at low cost, treatment effeciency high and concentration for the treatment of model
Enclose wide advantage.After above method Treatment of Copper ion waste water, the copper ion in waste water can be reduced to 0.001g/L hereinafter,
Current efficiency may be up to 99%, and (current efficiency refers to the percentage of the reasonable opinion analysis amount of copper of practical analysis amount of copper, or practical precipitation target
The percentage of metal target amount is precipitated in the reasonable opinion of amount of metal).The copper-containing wastewater of 20g/L or more can reach 98% or more electric current effect
Rate, the copper-containing wastewater of 5g/L or more can reach 90% or more current efficiency, when copper ion concentration is reduced to reduced levels, electricity
It is still higher to flow efficiency.When Cu in waste water ion concentration is in 5-10g/L or more, can efficiently, the electrolysis production of high current it is pure
Degree is that 99.9% or more cathode copper products can produce 99.5% or more cathode copper products of purity, to greatest extent in 1-5g/L
Copper resource is cashed.
Further, the method also includes the step of the solution containing non-copper metal ion is added into copper ions waste water
Suddenly, the theoretical deposition potential of the non-copper metal ion is lower than the theoretical deposition potential of copper ion.The effect of above-mentioned steps be for
Ensure containing other non-copper metal ions in copper ions, and the theoretical deposition potential of other non-copper metal ions is than copper ion
Theoretical deposition potential is low, guarantees that copper ion can preferentially be precipitated from cathode.
Further, the non-copper metal ion is K+、Ca2+、Mg2+、Na+、Zn2+And Fe2+In any one or at least
Two kinds of mixing.
Further, further include the steps that reducing solution system flow velocity after S2 in the method and improve current density；
And/or the metallic copper of precipitation is taken out, and the step of being packed after scalding.
When copper ion concentration reduces in solution, reducing solution system flow velocity and improving current density can be improved electric current effect
Rate.
Further, the waste water flow velocity after reduction is 1000-5000 ls/h, and the current density after raising is 400-
1200A/m2。
Further, the strainer of the filtering is ceramic filter screen, and the aperture of the ceramic filter screen is 0.01-0.1 microns.Pottery
Porcelain is mainly made of silicate, and acid-proof alkaline is excellent, and the features ceramics constituted with metal or metal oxide are also equipped with
The advantages that good toughness, high temperature resistant, excellent high intensity and antioxygenic property, foam ceramic filter can be filtered out effectively in waste water
Solid particle, the filtering accuracy of 0.01-0.1 microns of ceramic filter screen is higher.
Further, the copper ions waste water is the sulfuric acid copper waste water of highly acidity, low concentration.Highly acidity, low concentration
Sulfuric acid copper waste water is handled using the above method, not only simple process, easy to operate but also high-efficient, at low cost.
Further, a method of processing Treatment of Copper ion waste water, comprising the following steps:
S1 filters the sulfuric acid copper waste water of highly acidity, low concentration by the ceramic filter screen that aperture is 0.01-0.1 microns；
S2, the solution containing non-copper metal ion is added into sulfuric acid copper waste water, the non-copper metal ion is K+、Ca2+、
Mg2+、Na+、Zn2+And Fe2+In any one or at least two mixing；
S3, the solution system in S2 is passed through in electrolytic cell, and with 1000-15000 ls/h of flow velocity in electrolytic cell
Pressurization quickly flowing, in 50-1200A/m2Current density formed electric field action under, can be gradually in cathode precipitating metal
Copper；
S4, the flow velocity of the solution system in S3 is reduced to 1000-5000 ls/h, current density is improved to 400-
1200A/m2, continue in cathode precipitating metal copper；
S5, the metallic copper that S3 and S4 is precipitated take out, and pack after scalding.
It should be noted that above-mentioned copper ions waste water after the above method is handled, also needs to carry out subsequent sewage treatment, with
Thoroughly other harmful substances in waste water are removed.
In the present invention, highly acidity, low concentration sulfuric acid copper waste water refer to pH < 4, copper ion concentration is lower than 10 grams per liters
Sulfuric acid copper waste water.
The present invention also provides a kind of metallic copper, the metallic copper is prepared by the method for above-mentioned Treatment of Copper ion waste water
It obtains.
Compared with prior art, the invention has the benefit that
A kind of method of electrolytic metal ion provided by the invention will contain at least two using CSED electrolysis tech simultaneously
The solution system of kind different metal ions is passed through in electrolytic cell, solution system rotational flow in electrolytic cell, in the effect of electric field
Under, the higher metal ion of electrode potential is preferentially precipitated, the method for above-mentioned electrolytic metal ion can complete wide concentration range (from
0. more than zero grams per liter is to several hundred grams per liters) and high current density (400A/m2More than) under metal ion electrolysis, simple process,
Process is short, at low cost and high-efficient.Sewage is handled using the above method, can effectively solve the problem that other sewage treatmentmethod pollution rings
Border, the problem that waste water removal of impurities difficulty is big, process flow is long, high production cost and overall efficiency are low.
The method of Treatment of Copper ion waste water provided by the invention, with simple process, at low cost, treatment effeciency is high and locates
The wide advantage of concentration range is managed, wide concentration range (from 0. more than zero grams per liter to several hundred grams per liters) and high current density can be completed
(400A/m2More than) under copper ion electrolysis.After above method Treatment of Copper ion waste water, the copper ion in waste water can drop
Down to 0.001g/L hereinafter, current efficiency may be up to 99%.This method can directly carry out metal ion from low concentration solution
Electrolysis, optionally electrolytic metal, of less demanding to solution compolision, can be directly molten from highly acidity, low-concentration sulfuric acid copper
Qualified electrodeposition copper products are produced in liquid.
Metallic copper provided by the invention is prepared using the method for above-mentioned Treatment of Copper ion waste water, preparation process letter
Single, at low cost, obtained metallic copper purity is high, and the metallic copper of two kinds of different shapes of powdery or plate can be prepared.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.
The method of a kind of electrolytic metal ion provided by the invention, comprising the following steps: S1, provide the molten of metal ion
Liquid: the solution contains at least two different metal ions, and the theoretical deposition potential of different metal ions is different；
S2, the mixed solution system is passed through in electrolytic cell, and the rotational flow in electrolytic cell, under electric field action,
The metal with highest theory deposition potential gradually can be precipitated in cathode.
A kind of method of Treatment of Copper ion waste water provided by the invention, comprising the following steps:
S1, copper ions waste water solid is separated；
S2, the copper ions waste water after separation of solid and liquid is passed through in electrolytic cell, and with 1000-15000 ls/h of flow velocity
It pressurizes in electrolytic cell and quickly flows, in 50-1200A/m2Current density formed electric field action under, can be gradually in cathode
Precipitating metal copper.
A kind of metallic copper provided by the invention is prepared by the method for above-mentioned Treatment of Copper ion waste water.
Below in conjunction with embodiment and specific embodiment, the present invention will be further described in detail.
Embodiment 1
A kind of method of electrolytic metal ion, comprising the following steps: S1, provide containing Zn2+And K+Solution；
S2, above-mentioned solution system is passed through in electrolytic cell, and the quickly stream that pressurizeed in electrolytic cell with 3000 ls/h of flow velocity
It is dynamic, it is 400A/m in current density2It, can be gradually in cathode precipitating metal iron under the electric field action of formation.
Embodiment 2
A kind of method of electrolytic metal ion, comprising the following steps: S1, provide containing Cd2+、K+And Na+Solution；
S2, above-mentioned solution is passed through in electrolytic cell, and the quickly stream that pressurizeed in electrolytic cell with 3000 ls/h of flow velocity
It is dynamic, it is 300A/m in current density2It, can be gradually in cathode precipitating metal cadmium under the electric field action of formation.
Embodiment 3
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.01 micron of ceramic filter net filtration；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 1000 ls/h of flow velocity in electrolytic cell
Pressurization quickly flowing, in current density 50A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation.
Embodiment 4
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.05 micron of ceramic filter net filtration；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 7000 ls/h of flow velocity in electrolytic cell
Pressurization quickly flowing, in current density 400A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation.
Embodiment 5
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.05 micron of ceramic filter net filtration；
S2, it is added into filtered copper ions waste water containing K+Solution；
S3, above-mentioned mixed solution system is passed through in electrolytic cell, and is pressurizeed in electrolytic cell with 7000 ls/h of flow velocity
Quickly flowing, in current density 400A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation.
Embodiment 6
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, the copper sulphate of highly acidity, low concentration gives up
The ceramic filter net filtration that water is 0.05 micron by aperture；
S2, it is added into filtered copper ions waste water containing K+And Ca2+Solution；
S3, above-mentioned mixed solution system is passed through in electrolytic cell, and is pressurizeed in electrolytic cell with 1000 ls/h of flow velocity
Quickly flowing, in current density 400A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation.
Embodiment 7
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, the copper sulphate of highly acidity, low concentration gives up
The ceramic filter net filtration that water is 0.1 micron by aperture；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 9000 ls/h of flow velocity in electrolytic cell
Pressurization quickly flowing, in current density 200A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation；
S3, the flow velocity of copper ions waste water is reduced to 3000 ls/h, current density is improved to 1200A/m2Continue
Electrolysis continues the precipitating metal copper on cathode；
S4, the metallic copper that above-mentioned S2 and S3 is precipitated take out, and pack after scalding.
Embodiment 8
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.1 micron of ceramic filter net filtration；
S2, it is added into filtered copper ions waste water containing Zn2+Solution；
S3, above-mentioned mixed solution system is passed through in electrolytic cell, and is pressurizeed in electrolytic cell with 9000 ls/h of flow velocity
Quickly flowing, in current density 200A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation；
S4, the flow velocity of copper ions waste water is reduced to 3000 ls/h, current density is improved to 1200A/m2Continue
Electrolysis continues the precipitating metal copper on cathode；
S5, the metallic copper that above-mentioned S3 and S4 is precipitated take out, and pack after scalding.
Embodiment 9
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, the copper sulphate of highly acidity, low concentration gives up
The ceramic filter net filtration that water is 0.05 micron by aperture；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 1000 ls/h of flow velocity in electrolytic cell
Pressurization quickly flowing, in current density 500A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation；
S3, the metallic copper of above-mentioned precipitation is taken out, and is packed after scalding.
Embodiment 10
A kind of metallic copper is prepared using the method for the Treatment of Copper ion waste water of embodiment 8.
Embodiment 11
A kind of metallic copper is prepared using the method for the Treatment of Copper ion waste water of embodiment 9.
Comparative example 1
A kind of method of electrolytic metal ion, comprising the following steps: S1, provide containing Zn2+And K+Solution；
S2, above-mentioned solution is passed through in electrolytic cell, and is flowed in electrolytic cell with 700 ls/h of flow velocity, it is close in electric current
Degree is 1500A/m2It, can be gradually in cathode precipitating metal iron under the electric field action of formation.
Comparative example 2
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.01 micron of ceramic filter net filtration；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 500 ls/h of flow velocity in electrolytic cell
Flowing, in current density 10A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation.
Comparative example 3
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, the copper sulphate of highly acidity, low concentration gives up
The ceramic filter net filtration that water is 0.05 micron by aperture；
S2, filtered copper ions waste water is passed through in electrolytic cell, and with 600 ls/h of flow velocity in electrolytic cell
Flowing, in current density 1250A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation；
S3, the metallic copper of above-mentioned precipitation is taken out, and is packed after scalding.
Comparative example 4
A kind of method of Treatment of Copper ion waste water, comprising the following steps: S1, be by aperture by copper ions waste water
0.1 micron of ceramic filter net filtration；
S2, it is added into filtered copper ions waste water containing Zn2+Solution；
S3, above-mentioned mixed solution system is passed through in electrolytic cell, and is added in electrolytic cell with 20000 ls/h of flow velocity
Pressure quickly flowing, in current density 10A/m2It, can be gradually in cathode precipitating metal copper under the electric field action of formation；
S4, the flow velocity of copper ions waste water is reduced to 3000 ls/h, current density is improved to 1200A/m2Continue
Electrolysis continues the precipitating metal copper on cathode；
S5, the metallic copper that above-mentioned S3 and S4 is precipitated take out, and pack after scalding.
For the current efficiency in clear the various embodiments described above and each comparative example, measured in initial soln before method starts
Concentration of metal ions, and metal ion in surplus solution is measured after method, by practical amount of precipitation and it is calculated
Theoretical system measures each current efficiency, and test and calculated result are as shown in table 1.
1 embodiment 1-9 of table and comparative example 1-4 current efficiency comparison sheet
By the above test data it is found that using electrolytic metal ion provided by the invention and Treatment of Copper ion waste water
Method can complete wide concentration range (from 0. more than zero grams per liter to several hundred grams per liters) and high current density (400A/m2More than)
Under metal ion electrolysis, when initial concentration be higher than 1g/L when, current efficiency reaches as high as 99% 90% or more；Work simultaneously
Skill is simple, process is short, at low cost.The electricity of the method for electrolytic metal ion and Treatment of Copper ion waste water that comparative example 1-4 is provided
Efficiency is flowed 85% hereinafter, the electric current of the method significantly lower than electrolytic metal ion and Treatment of Copper ion waste water of the invention
Efficiency.In addition to this, by the concentration for the treatment of of the method for electrolytic metal ion provided by the present invention and Treatment of Copper ion waste water
Range and current efficiency find that the processing of method of the invention is dense compared with the concentration range of conventional electrolytic methods and current efficiency
Degree range and current efficiency are superior to conventional method.
Through observation shows that 10 gained metallic copper of embodiment is plate, 11 gained metallic copper of embodiment is powder.
Although illustrate and describing the present invention with specific embodiment, it will be appreciated that without departing substantially from of the invention
Many other change and modification can be made in the case where spirit and scope.It is, therefore, intended that in the following claims
Including belonging to all such changes and modifications in the scope of the invention.
Claims (6)
1. a kind of method of Treatment of Copper ion waste water, which comprises the following steps:
S1, copper ions waste water solid is separated；
S2, the copper ions waste water after separation of solid and liquid is passed through in electrolytic cell, and with 1000-15000 ls/h of flow velocity in electricity
Pressurization quickly flowing in slot is solved, in 50-1200A/m2Current density formed electric field action under, can gradually cathode be precipitated
Metallic copper；
Further include the steps that reducing waste water flow velocity after S2 in the method and improve current density, the waste water flow velocity after reduction is
1000-5000 ls/h, the current density after raising is 400-1200A/m2；
The copper ions waste water be highly acidity, low concentration sulfuric acid copper waste water, the pH < 4 of the copper ions waste water, copper from
Sub- concentration is lower than 10g/L；Except containing in addition to copper ion in the copper ions waste water, also containing other theoretical deposition potentials and copper from
The different metal of son, the wherein theoretical deposition potential highest of copper ion.
2. the method for Treatment of Copper ion waste water according to claim 1, which is characterized in that the method also includes to containing
The step of solution containing non-copper metal ion is added in copper ion waste water, the theoretical deposition potential of the non-copper metal ion compares copper
The theoretical deposition potential of ion is low.
3. the method for Treatment of Copper ion waste water according to claim 2, which is characterized in that the non-copper metal ion is
K+、Ca2+、Mg2+、Na+、Zn2+And Fe2+In any one or at least two mixing.
4. the method for Treatment of Copper ion waste water according to claim 1, which is characterized in that further include in the method by
The metallic copper of precipitation takes out, and the step of packing after scalding.
5. the method for Treatment of Copper ion waste water according to claim 1, which is characterized in that the strainer of filtering is ceramic filtering
Net, the aperture of the ceramic filter screen are 0.01-0.1 microns.
6. the method for Treatment of Copper ion waste water according to claim 1, which comprises the following steps:
S1, the sulfuric acid copper waste water of highly acidity, low concentration is filtered by the ceramic filter screen that aperture is 0.01-0.1 microns；
S2, the solution containing non-copper metal ion is added into sulfuric acid copper waste water, the non-copper metal ion is K+、Ca2+、Mg2+、Na+、Zn2+And Fe2+In any one or at least two mixing；
S3, the solution system in S2 is passed through in electrolytic cell, and is rotated in electrolytic cell with 1000-15000 ls/h of flow velocity
Flowing, in 50-1200A/m2Current density formed electric field action under, can be gradually in cathode precipitating metal copper；
S4, the flow velocity of the solution system in S3 is reduced to 1000-5000 ls/h, current density is improved to 400-
1200A/m2, continue in cathode precipitating metal copper；
S5, the metallic copper that S3 and S4 is precipitated take out, and pack after scalding.
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