CN106745109A - Acid leaching process refines the processing method of waste liquid produced by cobalt nickel - Google Patents
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel Download PDFInfo
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01F—COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM, CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THE RARE-EARTH METALS
- C01F5/00—Compounds of magnesium
- C01F5/24—Magnesium carbonates
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B25/00—Phosphorus; Compounds thereof
- C01B25/16—Oxyacids of phosphorus; Salts thereof
- C01B25/26—Phosphates
- C01B25/45—Phosphates containing plural metal, or metal and ammonium
- C01B25/451—Phosphates containing plural metal, or metal and ammonium containing metal and ammonium
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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
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B7/00—Fertilisers based essentially on alkali or ammonium orthophosphates
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- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
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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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
- C02F1/5245—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents using basic salts, e.g. of aluminium and iron
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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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
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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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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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
- C02F2301/00—General aspects of water treatment
- C02F2301/08—Multistage treatments, e.g. repetition of the same process step under different conditions
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Abstract
The invention discloses the processing method that acid leaching process refines waste liquid produced by cobalt nickel, including step：（1）Precipitation reaction；（2）Sodium Polyacrylate is complexed；（3）It is concentrated by ultrafiltration for the first time；（4）Decomplexing；（5）It is concentrated by ultrafiltration for second；（6）Reverse osmosis concentration is separated.By processing method of the invention, the magnesium in waste liquid is precipitated with ammonium carbonate and ammonium phosphate, obtain magnesium carbonate and ammonium magnesium phosphate, right and wrong fertiliser containing magnesium usually realizes the effective recycling of magnesium metal.The present invention has also carried out complexing treatment, two times of ultrafiltration concentration and a reverse osmosis concentration treatment to the filtrate of gained after precipitation magnesium, so that remaining metal ion Separation by Complexation from filtrate out and is enriched in metal ion reverse osmosis concentrated liquid in filtrate, the first dialyzate and the 3rd dialyzate produced during this can be directly as industrial water reuses, and metal ion reverse osmosis concentrated liquid can be also used for plating production, other metals are realized（Manganese, cobalt, nickel etc.）Recycle.
Description
Technical field
The present invention relates to a kind of method for treating waste liquid, and in particular to a kind of acid leaching process refines the place of waste liquid produced by cobalt nickel
Reason method.Belong to metal smelting technical field.
Background technology
Acid leaching process refines the common method of valuable metal, such as, when cobalt nickel is produced, directly using acid（Typically sulphur
Acid）Solution leaches the valuable metals such as the cobalt nickel in ore, but, inevitably will be with cobalt nickel association during acidleach
The impurity such as magnesium, manganese leach in the lump, subsequent leachate is purified and removal of impurities after be settled out cobalt nickel, liquid after the heavy cobalt nickel for so obtaining
In containing the impurity such as magnesium, manganese, or even also have cobalt nickel of a small amount of residual etc., simultaneously as used a large amount of acid in acid leaching process, therefore
Also contain substantial amounts of acid in produced waste liquid.
In actual production, the waste liquid that the above method is produced should be further processed, reach resource recycling
Purpose, it is to avoid waste and the pollution to environment.
The content of the invention
The purpose of the present invention is to overcome above-mentioned the deficiencies in the prior art, there is provided a kind of acid leaching process is refined produced by cobalt nickel
The processing method of waste liquid.
To achieve the above object, the present invention uses following technical proposals：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）To sodium hydroxide solution is added in waste liquid, regulation pH value is 7~8, and it is 1 to add mol ratio：1~2 ammonium carbonate and phosphorus
Sour ammonium, carries out precipitation reaction and filters, and obtains sediment and filtrate；
（2）Metal ion complex is formed to Sodium Polyacrylate, the residual metallic ion in complexing filtrate is added in filtrate；
（3）First time ultrafiltration concentration is carried out, the first ultrafiltration concentration liquid and the first dialyzate is obtained, the latter is used as industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 1~2 causes first liquid is concentrated by ultrafiltration by acidifying
In metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration, the second ultrafiltration concentration liquid and the second dialyzate, Sodium Polyacrylate is obtained
It is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation, metal ion reverse osmosis concentrated liquid and the 3rd dialyzate is obtained,
The latter is used as industrial water reuse.
Preferably, step（1）Before middle precipitation reaction, first waste liquid is placed in mummifying pool, concentration and evaporation falls 10~20% water
Point, press filtration then is carried out using plate and frame filter press, remove 20~25% moisture.
Preferably, step（1）In, the total amount of ammonium carbonate and ammonium phosphate is 1.2~1.8g with the mass volume ratio of waste liquid：
1L, the time of precipitation reaction is 1~2 hour.
Preferably, step（1）In, the mass concentration of sodium hydroxide solution is 40%.
Preferably, step（1）In, sediment is washed with deionized 2~3 times, and 12 are dried under the conditions of 40~80 DEG C
~24 hours, you can obtain being used as the fertiliser containing magnesium of fertilizer（Including magnesium carbonate and ammonium magnesium phosphate）.
Preferably, step（2）In, every liter of Sodium Polyacrylate addition of filtrate is 1.7~2.1g.
Preferably, step（3）In the milipore filter that uses is concentrated by ultrafiltration is the poly- inclined fluorine of molecular cut off 50000 first time
Vinyl film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa.
Preferably, step（5）In the milipore filter that uses to be concentrated by ultrafiltration second be the poly- inclined fluorine of molecular cut off 50000
Vinyl film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa.
Preferably, step（6）In, the process conditions of reverse osmosis concentration are：Pressure 3MPa, feed liquid cycles of concentration is 10 times.
Preferably, step（6）Gained metal ion reverse osmosis concentrated liquid can as plating production process in recycle.
Beneficial effects of the present invention：
Contain a large amount of magnesium in the waste liquid that acid leaching process refines produced by cobalt nickel, by processing method of the invention, with ammonium carbonate and
Magnesium in ammonium phosphate precipitation waste liquid, obtains magnesium carbonate and ammonium magnesium phosphate, and right and wrong fertiliser containing magnesium usually realizes the effective of magnesium metal
Recycle.The present invention has also carried out complexing treatment, two times of ultrafiltration concentration and a reverse osmosis to the filtrate of gained after precipitation magnesium
Saturating concentration so that remaining metal ion Separation by Complexation from filtrate out and is enriched in metal ion counter-infiltration in filtrate
In concentrate, should during produce the first dialyzate and the 3rd dialyzate can directly as industrial water reuse, and metal from
Sub- reverse osmosis concentrated liquid can be also used for plating production, realize other metals（Manganese, cobalt, nickel etc.）Recycle.
Specific embodiment
With reference to embodiment, the present invention will be further elaborated, it should explanation, the description below merely to
The present invention is explained, its content is not defined.
Embodiment 1：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）Waste liquid is placed in mummifying pool, concentration and evaporation falls 10% moisture, then carries out press filtration using plate and frame filter press, removed
20% moisture；It is subsequently adding sodium hydroxide solution（40w.t.%）, regulation pH value is 7, and it is 1 to add mol ratio：1 ammonium carbonate and
Ammonium phosphate, carries out precipitation reaction 1 hour and filters, and obtains sediment and filtrate；Wherein, the total amount and waste liquid of ammonium carbonate and ammonium phosphate
Mass volume ratio be 1.2g：1L, sediment is washed with deionized 2 times, and is dried 12 hours under the conditions of 40 DEG C, you can
To the fertiliser containing magnesium as fertilizer（Including magnesium carbonate and ammonium magnesium phosphate）；
（2）To adding Sodium Polyacrylate in filtrate（Every liter of Sodium Polyacrylate addition of filtrate is 1.7g）, in complexing filtrate
Residual metallic ion, forms metal ion complex；
（3）Be concentrated by ultrafiltration for the first time and separate（The milipore filter for using is the polyvinylidene fluoride film of molecular cut off 50000, is surpassed
Filtering technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, obtain the first ultrafiltration concentration liquid and the first dialyzate, Hou Zhezuo
It is industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 1 causes first to be concentrated by ultrafiltration in liquid by acidifying
Metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration（The milipore filter for using is the polyvinylidene fluoride of molecular cut off 50000
Alkene film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, the second ultrafiltration concentration liquid and the second dialyzate are obtained,
Sodium Polyacrylate is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation（Pressure 3MPa, feed liquid cycles of concentration is 10 times）, obtain metal from
Sub- reverse osmosis concentrated liquid（Can as plating production process in recycle）And the 3rd dialyzate, the latter returns as industrial water
With.
Embodiment 2：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）Waste liquid is placed in mummifying pool, concentration and evaporation falls 20% moisture, then carries out press filtration using plate and frame filter press, removed
25% moisture；It is subsequently adding sodium hydroxide solution（40w.t.%）, regulation pH value is 8, and it is 1 to add mol ratio：2 ammonium carbonate and
Ammonium phosphate, carries out precipitation reaction 2 hours and filters, and obtains sediment and filtrate；Wherein, the total amount and waste liquid of ammonium carbonate and ammonium phosphate
Mass volume ratio be 1.8g：1L, sediment is washed with deionized 3 times, and is dried 24 hours under the conditions of 80 DEG C, you can
To the fertiliser containing magnesium as fertilizer（Including magnesium carbonate and ammonium magnesium phosphate）；
（2）To adding Sodium Polyacrylate in filtrate（Every liter of Sodium Polyacrylate addition of filtrate is 2.1g）, in complexing filtrate
Residual metallic ion, forms metal ion complex；
（3）Be concentrated by ultrafiltration for the first time and separate（The milipore filter for using is the polyvinylidene fluoride film of molecular cut off 50000, is surpassed
Filtering technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, obtain the first ultrafiltration concentration liquid and the first dialyzate, Hou Zhezuo
It is industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 2 causes first to be concentrated by ultrafiltration in liquid by acidifying
Metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration（The milipore filter for using is the polyvinylidene fluoride of molecular cut off 50000
Alkene film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, the second ultrafiltration concentration liquid and the second dialyzate are obtained,
Sodium Polyacrylate is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation（Pressure 3MPa, feed liquid cycles of concentration is 10 times）, obtain metal from
Sub- reverse osmosis concentrated liquid（Can as plating production process in recycle）And the 3rd dialyzate, the latter returns as industrial water
With.
Embodiment 3：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）Waste liquid is placed in mummifying pool, concentration and evaporation falls 10% moisture, then carries out press filtration using plate and frame filter press, removed
25% moisture；It is subsequently adding sodium hydroxide solution（40w.t.%）, regulation pH value is 7, and it is 1 to add mol ratio：2 ammonium carbonate and
Ammonium phosphate, carries out precipitation reaction 1 hour and filters, and obtains sediment and filtrate；Wherein, the total amount and waste liquid of ammonium carbonate and ammonium phosphate
Mass volume ratio be 1.8g：1L, sediment is washed with deionized 2 times, and is dried 12 hours under the conditions of 80 DEG C, you can
To the fertiliser containing magnesium as fertilizer（Including magnesium carbonate and ammonium magnesium phosphate）；
（2）To adding Sodium Polyacrylate in filtrate（Every liter of Sodium Polyacrylate addition of filtrate is 2.1g）, in complexing filtrate
Residual metallic ion, forms metal ion complex；
（3）Be concentrated by ultrafiltration for the first time and separate（The milipore filter for using is the polyvinylidene fluoride film of molecular cut off 50000, is surpassed
Filtering technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, obtain the first ultrafiltration concentration liquid and the first dialyzate, Hou Zhezuo
It is industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 1 causes first to be concentrated by ultrafiltration in liquid by acidifying
Metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration（The milipore filter for using is the polyvinylidene fluoride of molecular cut off 50000
Alkene film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, the second ultrafiltration concentration liquid and the second dialyzate are obtained,
Sodium Polyacrylate is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation（Pressure 3MPa, feed liquid cycles of concentration is 10 times）, obtain metal from
Sub- reverse osmosis concentrated liquid（Can as plating production process in recycle）And the 3rd dialyzate, the latter returns as industrial water
With.
Embodiment 4：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）Waste liquid is placed in mummifying pool, concentration and evaporation falls 20% moisture, then carries out press filtration using plate and frame filter press, removed
20% moisture；It is subsequently adding sodium hydroxide solution（40w.t.%）, regulation pH value is 8, and it is 1 to add mol ratio：1 ammonium carbonate and
Ammonium phosphate, carries out precipitation reaction 2 hours and filters, and obtains sediment and filtrate；Wherein, the total amount and waste liquid of ammonium carbonate and ammonium phosphate
Mass volume ratio be 1.2g：1L, sediment is washed with deionized 3 times, and is dried 24 hours under the conditions of 40 DEG C, you can
To the fertiliser containing magnesium as fertilizer（Including magnesium carbonate and ammonium magnesium phosphate）；
（2）To adding Sodium Polyacrylate in filtrate（Every liter of Sodium Polyacrylate addition of filtrate is 1.7g）, in complexing filtrate
Residual metallic ion, forms metal ion complex；
（3）Be concentrated by ultrafiltration for the first time and separate（The milipore filter for using is the polyvinylidene fluoride film of molecular cut off 50000, is surpassed
Filtering technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, obtain the first ultrafiltration concentration liquid and the first dialyzate, Hou Zhezuo
It is industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 2 causes first to be concentrated by ultrafiltration in liquid by acidifying
Metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration（The milipore filter for using is the polyvinylidene fluoride of molecular cut off 50000
Alkene film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, the second ultrafiltration concentration liquid and the second dialyzate are obtained,
Sodium Polyacrylate is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation（Pressure 3MPa, feed liquid cycles of concentration is 10 times）, obtain metal from
Sub- reverse osmosis concentrated liquid（Can as plating production process in recycle）And the 3rd dialyzate, the latter returns as industrial water
With.
Embodiment 5：
Acid leaching process refines the processing method of waste liquid produced by cobalt nickel, including step：
（1）Waste liquid is placed in mummifying pool, concentration and evaporation falls 15% moisture, then carries out press filtration using plate and frame filter press, removed
22% moisture；It is subsequently adding sodium hydroxide solution（40w.t.%）, regulation pH value is 7, and it is 1 to add mol ratio：1.5 ammonium carbonate
And ammonium phosphate, carry out precipitation reaction 1.5 hours and filter, obtain sediment and filtrate；Wherein, the total amount of ammonium carbonate and ammonium phosphate with
The mass volume ratio of waste liquid is 1.6g：1L, sediment is washed with deionized 3 times, and dry 18 hours under the conditions of 60 DEG C, i.e.,
The fertiliser containing magnesium of fertilizer can be obtained being used as（Including magnesium carbonate and ammonium magnesium phosphate）；
（2）To adding Sodium Polyacrylate in filtrate（Every liter of Sodium Polyacrylate addition of filtrate is 1.8g）, in complexing filtrate
Residual metallic ion, forms metal ion complex；
（3）Be concentrated by ultrafiltration for the first time and separate（The milipore filter for using is the polyvinylidene fluoride film of molecular cut off 50000, is surpassed
Filtering technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, obtain the first ultrafiltration concentration liquid and the first dialyzate, Hou Zhezuo
It is industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 2 causes first to be concentrated by ultrafiltration in liquid by acidifying
Metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration（The milipore filter for using is the polyvinylidene fluoride of molecular cut off 50000
Alkene film, ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out to press 0.1MPa）, the second ultrafiltration concentration liquid and the second dialyzate are obtained,
Sodium Polyacrylate is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation（Pressure 3MPa, feed liquid cycles of concentration is 10 times）, obtain metal from
Sub- reverse osmosis concentrated liquid（Can as plating production process in recycle）And the 3rd dialyzate, the latter returns as industrial water
With.
Test example
Using the metal ion in waste liquid before EDTA compleximetry detection process（Including all metal ions such as magnesium, manganese）Contain
Amount, using the metal ion in waste liquid after atomic absorption spectrography (AAS) detection process（Including all metal ions such as magnesium, manganese）Content,
The results are shown in Table 1.
The metal ion content situation of table 1.
As shown in Table 1, waste liquid includes the first dialyzate and the 3rd dialyzate two parts after treatment, and metal ion content therein is equal
＜ 0.023mg/L, meet water quality standard for industries；Also, compared with before processing metal ions in waste liquor content, effectively reclaim
Metal ion in waste liquid.
Although above-mentioned be described to specific embodiment of the invention, not to the limit of the scope of the present invention
System, on the basis of technical scheme, it is each that those skilled in the art make by need not paying creative work
Plant modification or deform still within protection scope of the present invention.
Claims (10)
1. acid leaching process refines the processing method of waste liquid produced by cobalt nickel, it is characterised in that including step：
（1）To sodium hydroxide solution is added in waste liquid, regulation pH value is 7~8, and it is 1 to add mol ratio：1~2 ammonium carbonate and phosphorus
Sour ammonium, carries out precipitation reaction and filters, and obtains sediment and filtrate；
（2）Metal ion complex is formed to Sodium Polyacrylate, the residual metallic ion in complexing filtrate is added in filtrate；
（3）First time ultrafiltration concentration is carried out, the first ultrafiltration concentration liquid and the first dialyzate is obtained, the latter is used as industrial water reuse；
（4）To the concentrated sulfuric acid is added in the first ultrafiltration concentration liquid, regulation pH value to 1~2 causes first liquid is concentrated by ultrafiltration by acidifying
In metal ion complex carry out decomplexing；
（5）The solution of decomplexing is carried out into second ultrafiltration concentration, the second ultrafiltration concentration liquid and the second dialyzate, Sodium Polyacrylate is obtained
It is enriched in the second ultrafiltration concentration liquid, and return to step（3）Recycle；
（6）Second dialyzate is carried out into reverse osmosis concentration separation, metal ion reverse osmosis concentrated liquid and the 3rd dialyzate is obtained,
The latter is used as industrial water reuse.
2. processing method according to claim 1, it is characterised in that step（1）Before middle precipitation reaction, first waste liquid is placed in
In mummifying pool, concentration and evaporation falls 10~20% moisture, then carries out press filtration using plate and frame filter press, removes 20~25% water
Point.
3. processing method according to claim 1, it is characterised in that step（1）In, the total amount of ammonium carbonate and ammonium phosphate with
The mass volume ratio of waste liquid is 1.2~1.8g：1L, the time of precipitation reaction is 1~2 hour.
4. processing method according to claim 1, it is characterised in that step（1）In, the mass concentration of sodium hydroxide solution
It is 40%.
5. processing method according to claim 1, it is characterised in that step（1）In, sediment is washed with deionized 2
~3 times, and dried 12~24 hours under the conditions of 40~80 DEG C, you can obtain being used as the fertiliser containing magnesium of fertilizer（Including magnesium carbonate and phosphorus
Sour ammonium magnesium）.
6. processing method according to claim 1, it is characterised in that step（2）In, the Sodium Polyacrylate of every liter of filtrate adds
Enter amount for 1.7~2.1g.
7. processing method according to claim 1, it is characterised in that step（3）In first time be concentrated by ultrafiltration and use
Milipore filter is the polyvinylidene fluoride film of molecular cut off 50000, and ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out pressure
0.1MPa。
8. processing method according to claim 1, it is characterised in that step（5）In be concentrated by ultrafiltration for second and to use
Milipore filter is the polyvinylidene fluoride film of molecular cut off 50000, and ultrafiltration technology condition is：Room temperature, enters to press 0.3MPa, goes out pressure
0.1MPa。
9. processing method according to claim 1, it is characterised in that step（6）In, the process conditions of reverse osmosis concentration
For：Pressure 3MPa, feed liquid cycles of concentration is 10 times.
10. processing method according to claim 1, it is characterised in that step（6）Gained metal ion reverse osmosis concentrated liquid
Can as plating production process in recycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611067556.8A CN106745109A (en) | 2016-11-29 | 2016-11-29 | Acid leaching process refines the processing method of waste liquid produced by cobalt nickel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611067556.8A CN106745109A (en) | 2016-11-29 | 2016-11-29 | Acid leaching process refines the processing method of waste liquid produced by cobalt nickel |
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| Publication Number | Publication Date |
|---|---|
| CN106745109A true CN106745109A (en) | 2017-05-31 |
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| CN201611067556.8A Pending CN106745109A (en) | 2016-11-29 | 2016-11-29 | Acid leaching process refines the processing method of waste liquid produced by cobalt nickel |
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| CN109321944A (en) * | 2018-11-22 | 2019-02-12 | 云南创磷业技术有限公司 | A kind of method of electrolytic manganese by-product waste residue comprehensive utilization |
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