CN107055887A - A kind of method that membrane electrolysis handles low concentration nickel-containing waste water - Google Patents
A kind of method that membrane electrolysis handles low concentration nickel-containing waste water Download PDFInfo
- Publication number
- CN107055887A CN107055887A CN201710452165.6A CN201710452165A CN107055887A CN 107055887 A CN107055887 A CN 107055887A CN 201710452165 A CN201710452165 A CN 201710452165A CN 107055887 A CN107055887 A CN 107055887A
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- China
- Prior art keywords
- waste water
- nickel
- ion exchange
- containing waste
- low 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.)
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Classifications
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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
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/42—Treatment of water, waste water, or sewage by ion-exchange
- C02F2001/425—Treatment of water, waste water, or sewage by ion-exchange using cation exchangers
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/16—Regeneration of sorbents, filters
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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Abstract
The invention discloses a kind of method that membrane electrolysis handles low concentration nickel-containing waste water, the nickel-containing waste water of low concentration first passes through Filter column, from the outflow of filtering column bottom, ion exchange is carried out subsequently into ion exchange column, with the progress of exchange, resin in ion exchange column is progressively changed into green from faint yellow, when the resins exchange in ion exchange column 2 reaches saturation, it just can be appreciated that in post a jade-green banding occur close to top, it can stop exchanging, at this moment the remaining waste water of wastewater valve door knob for opening ion exchange column bottom is discharged, remaining waste water needs to exchange again；Then the valve of regeneration liquid case is opened and regenerated, by the way of upper entering and lower leaving, is collected eluent in the eluent outlet of ion exchange column bottom；Electrolysis wastewater of the present invention, which reclaims metallic nickel, can not only solve the problem of discharge contains heavy metal wastewater thereby produced pollution environment, meanwhile, also create certain economic benefit.
Description
Technical field
The present invention relates to a kind of electronics industry sewage treatment area, specifically a kind of membrane electrolysis processing low concentration Nickel-bearing Waste
The method of water.
Background technology
With the progress of China's economic technology and science and technology, electronics industry is developed rapidly, and the demand of nickel metal and day be all
Increase, still, metallic nickel is non-renewable resources, the consumption figure of nickel considerably beyond nickel output, therefore, to metal in waste water
The recycling and regeneration of nickel are just into inevitable development.In addition, nickel metal belongs to rare precious metals, there is very high
Economic value, nickel and its compound will also result in harmful effect to the health of human body, so, no matter being imitated from social benefit, economy
In benefit or environmental benefit, the recycling of nickel metal is all imperative in waste water.
The content of the invention
It is an object of the invention to provide a kind of method that membrane electrolysis handles low concentration nickel-containing waste water, to solve the above-mentioned back of the body
The problem of being proposed in scape technology.
To achieve the above object, the present invention provides following technical scheme：
A kind of method that membrane electrolysis handles low concentration nickel-containing waste water, the nickel-containing waste water of low concentration first passes through Filter column, from filtering
Column bottom is flowed out, and ion exchange is carried out subsequently into ion exchange column, with the progress of exchange, the resin in ion exchange column by
It is faint yellow to be progressively changed into green, when the resins exchange in ion exchange column reaches saturation, it just can be appreciated that appearance one is light green in post
The banding of color is close to top, you can stop exchanging, and at this moment opens the remaining waste water row of wastewater valve door knob of ion exchange column bottom
Go out, remaining waste water needs to exchange again；Then the valve of regeneration liquid case is opened and regenerated, using the side of upper entering and lower leaving
Eluent, is collected, is eluted in eluent containing substantial amounts of by formula in the eluent outlet of ion exchange column bottom
Metal ion, that is, obtained the nickel-containing waste water of high concentration, this completes the concentration of nickel-containing waste water；The concentration of nickel-containing waste water
Then it is passed through in electrolytic cell, electrolytic tank electrolysis 28h；
Wherein, the ion exchange column makes for machine glass cylinder, and shaft has 5 Inlet and outlet water valves, interior to be filled with resin, from
Sub- switch mode uses the pattern of bottom in and top out；
Wherein, the polyethylene micropore Filter column is closed lucite cylinder, internal filled polyethylene sintered pipes, shaft cloth
Provided with an Inlet and outlet water valve；
Wherein, the regeneration liquid case is using circular lucite tubualted bottle, and tubualted bottle bottom is provided with a water outlet port, regeneration
Liquid enters ion exchange column by water outlet port；
Wherein, the regenerated liquid selects Na2SO4Solution, concentration is 5%, with the regeneration of upper entering and lower leaving, nickel in eluent
Ion concentration reaches 10.0g/L or so, is conducive to film reclaiming metals；
Wherein, preferably Na types strongly acidic styrene cationic ion-exchange resin, model 001 × 7（732）, the exchanger resin is
Round granular, color is light yellow, and moisture content is about 46%-52%, and it has good chemical stability and heat resistance etc.,
It is commonly used as the desalination and emollescence of water.
The lucite electrolytic cell is shaped as being provided with out-phase type 3362A types in the middle part of cylinder, lucite electrolytic cell
Anion-exchange membrane, wherein decomposition voltage are 6V, and unified anolyte is sodium hydroxide solution, and concentration is 0.5mol/l, catholyte
For NiSO4Solution, 4.5 are transferred to by pH value.
In electrolytic process, the SO of cathode chamber4 2-Through anion-exchange membrane to anode chamber, its electrode reaction equation is：
Anode chamber：2H2O-4e→02↑+4H+ H++OH-→H20
Cathode chamber：Ni2++ 2e → Ni (main reaction) 2H+ +2e→ H2↑
In electrolytic process, the SO of cathode chamber4 2-Anode chamber can be entered by anion-exchange membrane, gas is finally produced on anode
Body O2, and the H in anode chamber+But anion-exchange membrane can not be passed through, so it is avoided that the deposition to metallic nickel produces bad shadow
Ring, while inhibiting H2Generation, improve the H produced in current efficiency, and anode chamber+With the OH in anolyte-
It can neutralize.
Compared with prior art, the beneficial effects of the invention are as follows：Electrolysis wastewater reclaims metallic nickel not only can the row of solving
The problem of putting containing heavy metal wastewater thereby produced pollution environment, meanwhile, also create certain economic benefit.
Brief description of the drawings
Fig. 1 is the connection diagram for the method that membrane electrolysis handles low concentration nickel-containing waste water.
Fig. 2 be membrane electrolysis handle low concentration nickel-containing waste water method in electrolytic cell structural representation.
Fig. 3 be membrane electrolysis handle low concentration nickel-containing waste water method in electrolytic cell top view.
Fig. 4 is the signal that membrane electrolysis handles electrolysis time and nickel ion eduction rate in the method for low concentration nickel-containing waste water
Figure.
Embodiment
The technical scheme of this patent is described in more detail with reference to embodiment.
Refer to Fig. 1-4, a kind of method that membrane electrolysis handles low concentration nickel-containing waste water,
The first step, the nickel-containing waste water of low concentration first passes through Filter column 1, from the outflow of the bottom of Filter column 1, subsequently into ion exchange column
2 carry out ion exchange, with the progress of exchange, and the resin in ion exchange column 2 is progressively changed into green from faint yellow, when ion is handed over
The resins exchange changed in post 2 reaches saturation, just can be appreciated that in post a jade-green banding occur close to top, you can stop handing over
Change, the waste water valve 21 at this moment opening the bottom of ion exchange column 2 discharges remaining waste water, and remaining waste water needs to hand over again
Change；Then the valve of regeneration liquid case 22 is opened and regenerated, by the way of upper entering and lower leaving, in the bottom of ion exchange column 2
Eluent is collected by eluent outlet 23, and the substantial amounts of metal ion being eluted is contained in eluent, that is, is obtained
The nickel-containing waste water of high concentration, this completes the concentration of nickel-containing waste water；
Wherein, ion exchange column 2 makes for machine glass cylinder, and shaft has 5 Inlet and outlet water valves, interior to be filled with resin, ion
Switch mode uses the pattern of bottom in and top out；
Wherein, polyethylene micropore Filter column 1 is closed lucite cylinder, and internal filled polyethylene sintered pipes, shaft is laid
There is an Inlet and outlet water valve；
Wherein, regeneration liquid case is using circular lucite tubualted bottle, tubualted bottle bottom provided with a water outlet port, regenerated liquid by
Water outlet port enters ion exchange column 2；
Regenerated liquid selects Na2SO4Solution, concentration is 5%, with the regeneration of upper entering and lower leaving, and nickel ion concentration reaches in eluent
10.0g/L or so is arrived, is conducive to film reclaiming metals；
Because that enrichment is W metal 2+, selection is acid cation exchange resin, preferably Na types strongly acidic styrene
Cationic ion-exchange resin, model 001 × 7（732）, the exchanger resin is round granular, and color is light yellow, and moisture content is big
About 46%-52%, it has good chemical stability and heat resistance etc., is commonly used as the desalination and emollescence of water.
Second step, the concentration of nickel-containing waste water is then passed through in electrolytic cell, electrolytic tank electrolysis 28h.
The lucite electrolytic cell that the present invention is used is shaped as being provided with out-phase type in the middle part of cylinder, lucite electrolytic cell
3362A types anion-exchange membrane 31, wherein decomposition voltage are 6V, and unified anolyte is sodium hydroxide solution, and concentration is 0.5mol/
L, catholyte is NiSO4Solution, 4.5 are transferred to by pH value.
In electrolytic process, the SO of cathode chamber4 2-Through anion-exchange membrane to anode chamber.Its electrode reaction equation is：
Anode chamber 32：2H2O-4e→02↑+4H+ H++OH-→H20
Cathode chamber 33：Ni2++ 2e → Ni (main reaction) 2H+ +2e→ H2↑
In electrolytic process, the SO of cathode chamber4 2-Anode chamber can be entered by anion-exchange membrane, gas is finally produced on anode
Body O2, and the H in anode chamber+But anion-exchange membrane can not be passed through, so it is avoided that the deposition to metallic nickel produces bad shadow
Ring, while inhibiting H2Generation, improve the H produced in current efficiency, and anode chamber+With the OH in anolyte-
It can neutralize, so be advantageous for the recovering effect of metallic nickel.
Electrolysis wastewater, which reclaims metallic nickel, can not only solve discharge containing heavy metal wastewater thereby produced pollution environment
Problem, meanwhile, also create certain economic benefit.
The better embodiment to this patent is explained in detail above, but this patent is not limited to above-mentioned embodiment party
, can also be on the premise of this patent objective not be departed from formula, the knowledge that one skilled in the relevant art possesses
Make a variety of changes.
Claims (7)
1. a kind of method that membrane electrolysis handles low concentration nickel-containing waste water, it is characterised in that including two steps；
The first step, the nickel-containing waste water of low concentration first passes through Filter column, from the outflow of filtering column bottom, enters subsequently into ion exchange column
Row ion exchange, with the progress of exchange, the resin in ion exchange column is progressively changed into green from faint yellow, works as ion exchange column
Resins exchange in 2 reaches saturation, just can be appreciated that in post a jade-green banding occur close to top, you can stop exchanging,
At this moment the remaining waste water of wastewater valve door knob for opening ion exchange column bottom is discharged, and remaining waste water needs to exchange again；So
The valve of regeneration liquid case is opened afterwards and regenerated, by the way of upper entering and lower leaving, the eluent in ion exchange column bottom goes out
Eluent is collected by mouth, and the substantial amounts of metal ion being eluted is contained in eluent, that is, has obtained containing for high concentration
Nickel waste water, this completes the concentration of nickel-containing waste water；
Second step, the concentration of nickel-containing waste water is then passed through in electrolytic cell, electrolytic tank electrolysis 28h；
In electrolytic process, the SO of cathode chamber4 2-Through anion-exchange membrane to anode chamber, its electrode reaction equation is：
Anode chamber：2H2O-4e→02↑+4H+ H++OH-→H20
Cathode chamber：Ni2++ 2e → Ni (main reaction) 2H+ +2e→ H2↑
In electrolytic process, the SO of cathode chamber4 2-Anode chamber can be entered by anion-exchange membrane, gas is finally produced on anode
Body O2, and the H in anode chamber+But anion-exchange membrane can not be passed through, so it is avoided that the deposition to metallic nickel produces bad shadow
Ring, while inhibiting H2Generation, improve the H produced in current efficiency, and anode chamber+With the OH in anolyte-
It can neutralize.
2. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that the ion
Exchange column makes for machine glass cylinder, and shaft has 5 Inlet and outlet water valves, interior to be filled with resin, under ion exchange mode is used
The pattern gone out on entering.
3. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that the poly- second
Alkene micro porous filtration post 1 is closed lucite cylinder, and internal filled polyethylene sintered pipes, shaft is laid with an inlet/outlet valve
Door.
4. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that the regeneration
Liquid case is entered using circular lucite tubualted bottle, tubualted bottle bottom provided with a water outlet port, regenerated liquid by water outlet port
Ion exchange column 2.
5. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that the regeneration
Liquid selects Na2SO4Solution, concentration is 5%, with the regeneration of upper entering and lower leaving, and nickel ion concentration reaches 10.0g/L in eluent
Left and right, is conducive to film reclaiming metals.
6. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that be preferably Na
Type strongly acidic styrene's cationic ion-exchange resin, model 001 × 7（732）, the exchanger resin is round granular, and color is
Light yellow, moisture content is about 46%-52%, and it has good chemical stability and heat resistance etc., is commonly used as the desalination of water
And emollescence.
7. the method that membrane electrolysis according to claim 1 handles low concentration nickel-containing waste water, it is characterised in that described organic
Glass electrolysis groove shape is to be provided with out-phase type 3362A type anion-exchange membranes in the middle part of cylinder, lucite electrolytic cell, wherein
Decomposition voltage is 6V, and unified anolyte is sodium hydroxide solution, and concentration is 0.5mol/l, and catholyte is NiSO4Solution, by pH value
It is transferred to 4.5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452165.6A CN107055887A (en) | 2017-06-15 | 2017-06-15 | A kind of method that membrane electrolysis handles low concentration nickel-containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710452165.6A CN107055887A (en) | 2017-06-15 | 2017-06-15 | A kind of method that membrane electrolysis handles low concentration nickel-containing waste water |
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| CN107055887A true CN107055887A (en) | 2017-08-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201710452165.6A Pending CN107055887A (en) | 2017-06-15 | 2017-06-15 | A kind of method that membrane electrolysis handles low concentration nickel-containing waste water |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750165A (en) * | 2019-02-25 | 2019-05-14 | 赣州逸豪新材料股份有限公司 | A kind of hydrometallurgic recovery and its heavy metal waste liquid concentration technology of waste and old aluminum substrate |
| CN113003658A (en) * | 2021-01-21 | 2021-06-22 | 新疆新鑫矿业股份有限公司阜康冶炼厂 | Treatment process of nickel insoluble anode electrolyte |
| CN113213590A (en) * | 2021-05-27 | 2021-08-06 | 深圳市冠融辰环保科技有限公司 | Method for treating nickel electroplating cleaning wastewater |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974166A (en) * | 1972-11-17 | 1974-07-17 | ||
| CN103572319A (en) * | 2013-11-25 | 2014-02-12 | 南安市旭繁金属回收有限公司 | Method for recovering nickel from electroplating centralized control wastewater |
| CN105887136A (en) * | 2016-04-23 | 2016-08-24 | 上海大学 | Method for separating iron and nickel from laterite nickel ore pickle liquor |
| CN106082500A (en) * | 2016-08-09 | 2016-11-09 | 成都虹华环保科技股份有限公司 | A kind of nickel retracting device |
-
2017
- 2017-06-15 CN CN201710452165.6A patent/CN107055887A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4974166A (en) * | 1972-11-17 | 1974-07-17 | ||
| CN103572319A (en) * | 2013-11-25 | 2014-02-12 | 南安市旭繁金属回收有限公司 | Method for recovering nickel from electroplating centralized control wastewater |
| CN105887136A (en) * | 2016-04-23 | 2016-08-24 | 上海大学 | Method for separating iron and nickel from laterite nickel ore pickle liquor |
| CN106082500A (en) * | 2016-08-09 | 2016-11-09 | 成都虹华环保科技股份有限公司 | A kind of nickel retracting device |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109750165A (en) * | 2019-02-25 | 2019-05-14 | 赣州逸豪新材料股份有限公司 | A kind of hydrometallurgic recovery and its heavy metal waste liquid concentration technology of waste and old aluminum substrate |
| CN113003658A (en) * | 2021-01-21 | 2021-06-22 | 新疆新鑫矿业股份有限公司阜康冶炼厂 | Treatment process of nickel insoluble anode electrolyte |
| CN113003658B (en) * | 2021-01-21 | 2022-12-20 | 新疆新鑫矿业股份有限公司阜康冶炼厂 | Treatment process of nickel insoluble anode electrolyte |
| CN113213590A (en) * | 2021-05-27 | 2021-08-06 | 深圳市冠融辰环保科技有限公司 | Method for treating nickel electroplating cleaning wastewater |
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