CN108996752A - A method of recycling low concentration nickel from the raffinate waste water of nickel - Google Patents
A method of recycling low concentration nickel from the raffinate waste water of nickel Download PDFInfo
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- CN108996752A CN108996752A CN201810909796.0A CN201810909796A CN108996752A CN 108996752 A CN108996752 A CN 108996752A CN 201810909796 A CN201810909796 A CN 201810909796A CN 108996752 A CN108996752 A CN 108996752A
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- Prior art keywords
- nickel
- waste water
- low concentration
- raffinate
- ozone
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 115
- 229910052759 nickel Inorganic materials 0.000 title claims abstract description 57
- 239000002351 wastewater Substances 0.000 title claims abstract description 54
- 238000000034 method Methods 0.000 title claims abstract description 24
- 238000004064 recycling Methods 0.000 title claims description 8
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 23
- 238000006243 chemical reaction Methods 0.000 claims abstract description 16
- VUFYPLUHTVSSGR-UHFFFAOYSA-M hydroxy(oxo)nickel Chemical compound O[Ni]=O VUFYPLUHTVSSGR-UHFFFAOYSA-M 0.000 claims abstract description 9
- 229930013930 alkaloid Natural products 0.000 claims abstract description 8
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 18
- 239000003795 chemical substances by application Substances 0.000 claims description 17
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 16
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 229910052799 carbon Inorganic materials 0.000 claims description 10
- 229940056319 ferrosoferric oxide Drugs 0.000 claims description 9
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 8
- 238000000926 separation method Methods 0.000 claims description 7
- 239000002893 slag Substances 0.000 claims description 5
- 239000002699 waste material Substances 0.000 claims description 5
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 4
- 239000002253 acid Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 4
- 239000008247 solid mixture Substances 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 3
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 3
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 3
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 2
- 230000001143 conditioned effect Effects 0.000 claims description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims description 2
- JKQOBWVOAYFWKG-UHFFFAOYSA-N molybdenum trioxide Chemical compound O=[Mo](=O)=O JKQOBWVOAYFWKG-UHFFFAOYSA-N 0.000 claims description 2
- 229910017604 nitric acid Inorganic materials 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 230000001172 regenerating effect Effects 0.000 claims description 2
- 238000002791 soaking Methods 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 2
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims 3
- 150000007513 acids Chemical class 0.000 claims 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims 1
- 235000011130 ammonium sulphate Nutrition 0.000 claims 1
- 229910000480 nickel oxide Inorganic materials 0.000 claims 1
- GNRSAWUEBMWBQH-UHFFFAOYSA-N oxonickel Chemical compound [Ni]=O GNRSAWUEBMWBQH-UHFFFAOYSA-N 0.000 claims 1
- 230000003647 oxidation Effects 0.000 abstract description 4
- 238000007254 oxidation reaction Methods 0.000 abstract description 4
- 238000005265 energy consumption Methods 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 239000012065 filter cake Substances 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 230000003519 ventilatory effect Effects 0.000 description 3
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- LGQLOGILCSXPEA-UHFFFAOYSA-L nickel sulfate Chemical compound [Ni+2].[O-]S([O-])(=O)=O LGQLOGILCSXPEA-UHFFFAOYSA-L 0.000 description 2
- 229910000363 nickel(II) sulfate Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- 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
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
-
- 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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- 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
Landscapes
- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a kind of methods that low concentration nickel is recycled in raffinate waste water from nickel, are passed through ozone into waste water and are reacted, and alkaloids are added in reaction process and maintain wastewater pH between 10-11, after the reaction was completed, can obtain the hydroxy nickel oxide that purity is greater than 98%.The present invention is with following the utility model has the advantages that the purity is high of hydroxy nickel oxide obtained by (1), can be directly entered former recovery system reuse；(2) treatment process is simple, it is only necessary to be passed through ozone；(3) ozone can COD in Simultaneous Oxidation waste water, mitigate the load of successive depths processing；(4) process energy consumption is low, at low cost, without secondary pollution.
Description
Technical field
The invention belongs to treatment of Organic Wastewater fields, and in particular to from the further recycling low concentration nickel of nickeliferous raffinate waste water
Processing method.
Background technique
Nickel is a kind of silvery white non-ferrous metal, has good mechanical strength, ductility and very high chemical stability, answers extensively
For producing stainless steel and various alloys, the modern aerospace industries of development, war industry, medicine equipment industry and hair are had become
Open up the indispensable metal of mankind's modern civilization.
China belongs to one of more rich country of nickel resources in the world, accounts for 9% of gross reserves or so, occupies the world the 4th.With
The high speed development of world economy, demand of the relevant industries to nickel also sharply increase, and at present in the world for the nickel minerals of exploitation
Resource is but gradually decreasing, therefore recycles nickel resources from waste material and seem ever more important.
Currently, recycle that nickel takes from nickel-contained waste slag be technique is " leaching-extracting-back extraction-sink nickel (or be electrolysed) ", this
The raffinate waste water that process generates, can not reuse, it is therefore desirable to handle since salinity is accumulated.The waste water typically contain it is a small amount of not by
The impurity heavy metal ion of the nickel ion of extraction and the entrainment of other raw materials.It is general using addition stone to remove this part heavy metal
The method of ash or molysite, can achieve the goal.But at the same time, the nickel in waste water is also by coprecipitation.Because of lime or molysite
Dosage is relatively large, and the precipitating gained quantity of slag is also larger, and wherein the grade of nickel does not have the value recycled again with regard to lower.Thus
It is basic to can consider that the nickel in raffinate waste water is wasted completely, and do not obtain reuse.In fact, the nickel in raffinate waste water contains
Though measuring low (≤100mg/L), total amount may not but be lacked.For example, day handles the enterprise of 1000 tons of waste water, if not returning to it
It receives, the daily nickel for having discharged about 100Kg is equivalent to 8000 yuan of loss based on 80,000 yuan/t of nickel valence.It therefore, if can be by simple
Mode recycles this part of nickel, then will greatly promote the performance of enterprises, meanwhile, it also can overcome the disadvantages that the departmental cost of wastewater treatment.
Summary of the invention
The object of the present invention is to provide a kind of methods that low concentration nickel is recycled in raffinate waste water from nickel.
The purpose of the present invention is what is realized in the following way:
A method of recycling low concentration nickel from the raffinate waste water of nickel, comprising the following steps:
(1) alkaloids are added into the raffinate waste water of nickel, adjust wastewater pH between 10-11；The raffinate of the nickel is useless
Concentration containing COD is 200~1000mg/L, nickeliferous≤100mg/L in water；
(2) it is passed through ozone into the raffinate waste water of nickel to be reacted, reaction process is continuously added alkaloids and maintains waste water
For basicity between 10-11, control reaction temperature is -5 DEG C~95 DEG C, after reaction 0.5~4 hour, is separated by solid-liquid separation, obtains hydroxyl oxidation
Nickel, purity >=98.0%；It is 80mg/L-120mg/L that the ozone, which is passed through concentration,.
The raffinate waste water of the nickel is preferably that the raffinate waste water after nickel is recycled in nickel-contained waste slag.Nickel is recycled in nickel-contained waste slag
It is described and describes in technique background.
Alkaloids described in the alkaloids of preferred embodiment, step (1) and step (2) are sodium hydroxide, sodium oxide molybdena, hydrogen
One of potassium oxide, potassium oxide or their combination.It can be the same or different.
Preferred embodiment, it is -5 DEG C~30 DEG C that control, which is passed through ozone reaction temperature,.
Mixed processing agent is added into waste water while being passed through ozone for preferred embodiment, step (2), according to step (2) institute
The conditioned response stated obtains the solid mixture of hydroxyl nickel oxide；The solid mixture of gained hydroxyl nickel oxide is first used into water
It is cleaned, is then impregnated 1~12 hour with acid, temperature 50 C~80 DEG C are controlled in soaking process, after the completion of immersion
Solid-liquor separation obtains solution and regenerative mixed inorganic agent containing high concentration of nickel；The dosage of the mixed processing agent is useless for 10-20mg/L
Water, the mixed processing agent are made of ammonium persulfate, ferroso-ferric oxide and active carbon, wherein ammonium persulfate, ferroso-ferric oxide with
The mass ratio of active carbon is 1 ﹕ (1-3) ﹕ (1-10).
Since mixed processing agent contains soluble persulfate, it is regenerated after supplementing corresponding persulfate in proportion
Mixed processing agent, that is, reusable.
The acid is preferably one of hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid or their combination.
Further preferred embodiment, the composition of the mixed processing agent persulfate, ferroso-ferric oxide and active carbon need to be into
One step meets following relationship: [m (ammonium persulfate)+m (ferroso-ferric oxide)]/m (active carbon)=0.4-0.6, the m represents matter
Amount, the mixed processing agent effect controlled in this proportional region are preferable.
The scheme of mixed processing agent is added, the reaction time can be greatly shortened, being passed through ozone treatment time is only 0.5~1
Hour, further increase treatment effeciency save the cost.
The present invention have it is following the utility model has the advantages that the purity is high of hydroxy nickel oxide obtained by (1) or solution containing nickel, can be direct
Into former recovery system reuse；(2) treatment process is simple, it is only necessary to be passed through ozone；(3) ozone can be in Simultaneous Oxidation waste water
COD mitigates the load of successive depths processing；(4) process energy consumption is low, at low cost, without secondary pollution；(5) further, by
Mixed processing agent is added while being passed through ozone, greatly improves ozone oxidation efficiency, shortens the processing time, can also preferably go
Except COD.
Specific embodiment
Below with reference to embodiment, the invention will be further described.
The nickeliferous organic wastewater of embodiment 1 is derived from factory of Jinhua, Zhejiang city, is 800mg/L, nickeliferous 58mg/L containing COD.It takes useless
Water 400L is placed in the cylindrical vessel of PP material, adjusts wastewater pH to pH=10 with sodium hydroxide, the rear ozone that introduces is exposed
Gas, ozone outlet concentration is 80~100mg/L, ventilatory capacity 5L/min, and in reaction process, continuous addition sodium hydroxide is maintained
Waste water ph is 10 or so, and controlling reaction temperature is 50 DEG C, after 3h, is staticly settled, and subsequent vacuum filter carries out solid-liquor separation, obtains
Black filter cake.After measured, COD is down to 300mg/L to waste water after processing, and precipitates nickeliferous about 64%, converts into hydroxy nickel oxide
Purity is greater than 99%.
The nickeliferous organic wastewater of embodiment 2 is derived from factory of Jinhua, Zhejiang city, is 700mg/L, nickeliferous 62mg/L containing COD.It takes useless
Water 500L is placed in the cylindrical vessel of PP material, adjusts wastewater pH to pH=11 with sodium hydroxide, the rear ozone that introduces is exposed
Gas, ozone outlet concentration is 80~100mg/L, ventilatory capacity 5L/min, and in reaction process, continuous addition sodium hydroxide is maintained
Waste water ph is 10 or so, and controlling reaction temperature is 30 DEG C, after 2h, is staticly settled, and subsequent vacuum filter carries out solid-liquor separation, obtains
Black filter cake.After measured, COD is down to 250mg/L to waste water after processing, and precipitates nickeliferous about 64%, converts into hydroxy nickel oxide
Purity is greater than 99%.
The nickeliferous organic wastewater of embodiment 3 is derived from factory of Jinhua, Zhejiang city, is 900mg/L, nickeliferous 51mg/L containing COD.It takes useless
Water 400L is placed in the cylindrical vessel of PP material, adjusts wastewater pH to pH=10 with sodium hydroxide, the rear ozone that introduces is exposed
Gas, ozone outlet concentration is 80~100mg/L, ventilatory capacity 5L/min, while mixed processing agent is added, the mixed processing agent
Additional amount is 14mg/L waste water, is made of ammonium persulfate, ferroso-ferric oxide and active carbon, wherein ammonium persulfate, ferroso-ferric oxide
Mass ratio with active carbon is 1 ﹕, 1 ﹕ 5.
In reaction process, sodium hydroxide is constantly added, maintains waste water ph 10 or so, and controlling reaction temperature is 25 DEG C,
It after 0.5h, staticly settles, subsequent vacuum filter carries out solid-liquor separation, obtains black filter cake.After measured, COD drops waste water after processing
To 80mg/L, and nickeliferous about 55.58% is precipitated, after precipitating is washed with clear water, by solid-to-liquid ratio (precipitating quality: liquid volume, g/
ML) sulfuric acid (sulfuric acid concentration 30%) is added in 1:10, and under agitation after leaching 2 hours, filtering, can must contain nickel concentration is
The nickel sulfate solution of 55g/L or so, the solution can be directly used for the preparation of nickel sulfate product.
Claims (8)
1. recycling the method for low concentration nickel in a kind of raffinate waste water from nickel, it is characterised in that: the following steps are included:
(1) alkaloids are added into the raffinate waste water of nickel, adjust wastewater pH between 10-11；In the raffinate waste water of the nickel
Concentration containing COD is 200~1000mg/L, nickeliferous≤100mg/L；
(2) it is passed through ozone into the raffinate waste water of nickel to be reacted, reaction process is continuously added alkaloids and maintains waste water basicity
Between 10-11, control reaction temperature is -5 DEG C~95 DEG C, after reaction 0.5~4 hour, is separated by solid-liquid separation, obtains hydroxy nickel oxide,
Its purity >=98.0%；It is 80mg/L-120mg/L that the ozone, which is passed through concentration,.
2. the method for low concentration nickel is recycled from the raffinate waste water of nickel according to claim 1, it is characterised in that: the nickel
Raffinate waste water is that the raffinate waste water after nickel is recycled in nickel-contained waste slag.
3. recycling the method for low concentration nickel in the raffinate waste water according to claim 1 or claim 2 from nickel, it is characterised in that: described
The alkaloids of step (1) and step (2) are one of sodium hydroxide, sodium oxide molybdena, potassium hydroxide, potassium oxide or their group
It closes.
4. recycling the method for low concentration nickel in the raffinate waste water according to claim 1 or claim 2 from nickel, it is characterised in that: control
Being passed through ozone reaction temperature is -5 DEG C~30 DEG C.
5. recycling the method for low concentration nickel in the raffinate waste water according to claim 1 or claim 2 from nickel, it is characterised in that: step
(2) while being passed through ozone, mixed processing agent is added into waste water, according to conditioned response described in step (2), obtains hydroxyl
The solid mixture of nickel oxide；The solid mixture of gained hydroxyl nickel oxide is first cleaned with water, acids object is then used
Matter is impregnated 1~12 hour, and temperature 50 C~80 DEG C are controlled in soaking process, and solid-liquor separation after the completion of immersion is obtained containing high concentration of nickel
Solution and regenerative mixed inorganic agent；The dosage of the mixed processing agent is 10-20mg/L waste water, and the mixed processing agent is by mistake
Ammonium sulfate, ferroso-ferric oxide and active carbon composition, wherein the mass ratio of ammonium persulfate, ferroso-ferric oxide and active carbon is 1 ﹕
(1-3) ﹕ (1-10).
6. the method for low concentration nickel is recycled from the raffinate waste water of nickel according to claim 5, it is characterised in that: the mixing
The composition of inorganic agent ammonium persulfate, ferroso-ferric oxide and active carbon needs further satisfaction or less relationship: [m (ammonium persulfate)+m (four
Fe 3 O)]/m (active carbon)=0.4-0.6, the m representation quality.
7. the method for low concentration nickel is recycled from the raffinate waste water of nickel according to claim 5, it is characterised in that: the acid
It is one of hydrochloric acid, nitric acid, phosphoric acid, sulfuric acid or their combination.
8. the method for low concentration nickel is recycled from the raffinate waste water of nickel according to claim 5, it is characterised in that: control is passed through
The ozone reaction time is 0.5~1 hour.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909796.0A CN108996752B (en) | 2018-08-10 | 2018-08-10 | Method for recovering low-concentration nickel from nickel extraction waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810909796.0A CN108996752B (en) | 2018-08-10 | 2018-08-10 | Method for recovering low-concentration nickel from nickel extraction waste water |
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| Publication Number | Publication Date |
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| CN108996752A true CN108996752A (en) | 2018-12-14 |
| CN108996752B CN108996752B (en) | 2021-04-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113287633A (en) * | 2021-06-02 | 2021-08-24 | 天津大学 | Red tide algae algaecide based on ferroferric oxide activated persulfate and application thereof |
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| CN113287633A (en) * | 2021-06-02 | 2021-08-24 | 天津大学 | Red tide algae algaecide based on ferroferric oxide activated persulfate and application thereof |
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