CN110818044A - Method for removing heavy metal and ammonia nitrogen from smelting wastewater - Google Patents
Method for removing heavy metal and ammonia nitrogen from smelting wastewater Download PDFInfo
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- CN110818044A CN110818044A CN201911060058.4A CN201911060058A CN110818044A CN 110818044 A CN110818044 A CN 110818044A CN 201911060058 A CN201911060058 A CN 201911060058A CN 110818044 A CN110818044 A CN 110818044A
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- ammonia nitrogen
- hydrogen sulfide
- smelting wastewater
- removing heavy
- heavy metal
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- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000002351 wastewater Substances 0.000 title claims abstract description 35
- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000003723 Smelting Methods 0.000 title claims abstract description 29
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 28
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims abstract description 23
- 239000007789 gas Substances 0.000 claims abstract description 18
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229910052751 metal Inorganic materials 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims abstract description 14
- 238000006243 chemical reaction Methods 0.000 claims abstract description 12
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims abstract description 11
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims abstract description 11
- 150000002500 ions Chemical class 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 3
- 239000002244 precipitate Substances 0.000 claims abstract description 3
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 10
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 10
- 239000004571 lime Substances 0.000 claims description 10
- 239000008267 milk Substances 0.000 claims description 10
- 210000004080 milk Anatomy 0.000 claims description 10
- 235000013336 milk Nutrition 0.000 claims description 10
- 239000000706 filtrate Substances 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 238000004073 vulcanization Methods 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 4
- MBMLMWLHJBBADN-UHFFFAOYSA-N Ferrous sulfide Chemical compound [Fe]=S MBMLMWLHJBBADN-UHFFFAOYSA-N 0.000 claims description 4
- JQJCSZOEVBFDKO-UHFFFAOYSA-N lead zinc Chemical compound [Zn].[Pb] JQJCSZOEVBFDKO-UHFFFAOYSA-N 0.000 claims description 4
- 238000002360 preparation method Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- LPXPTNMVRIOKMN-UHFFFAOYSA-M sodium nitrite Chemical compound [Na+].[O-]N=O LPXPTNMVRIOKMN-UHFFFAOYSA-M 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 235000012255 calcium oxide Nutrition 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims description 2
- 239000003344 environmental pollutant Substances 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 231100000719 pollutant Toxicity 0.000 claims description 2
- 235000010288 sodium nitrite Nutrition 0.000 claims description 2
- 238000005486 sulfidation Methods 0.000 claims 1
- KAEAMHPPLLJBKF-UHFFFAOYSA-N iron(3+) sulfide Chemical compound [S-2].[S-2].[S-2].[Fe+3].[Fe+3] KAEAMHPPLLJBKF-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 10
- 238000003828 vacuum filtration Methods 0.000 description 6
- 238000003756 stirring Methods 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 239000002253 acid Substances 0.000 description 4
- 239000000203 mixture Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000010842 industrial wastewater Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010170 biological method Methods 0.000 description 2
- 238000009388 chemical precipitation Methods 0.000 description 2
- 238000005342 ion exchange Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- QDHHCQZDFGDHMP-UHFFFAOYSA-N Chloramine Chemical compound ClN QDHHCQZDFGDHMP-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 241000195493 Cryptophyta Species 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 150000003017 phosphorus Chemical class 0.000 description 1
- 238000011197 physicochemical method Methods 0.000 description 1
- 238000009853 pyrometallurgy Methods 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- 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
-
- 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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
-
- 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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
Abstract
The invention discloses a method for removing heavy metal and ammonia nitrogen from smelting wastewater, which comprises the following steps of S1, preparing hydrogen sulfide; s2, preparing polymerized ferric sulfate; s3, vulcanizing at high temperature; s4, deeply removing impurities; the dosage of the ferric sulfide in the step S1 is 1.0-1.2 times of the theoretical amount when hydrogen sulfide gas can be generated to completely precipitate heavy metal ions in the non-ferrous metal smelting wastewater, the pH value of the polymeric ferric sulfate solution in the step S4 is adjusted to 6-9, and the temperature is raised to 85-100 ℃ for reaction for 30-60 min.
Description
Technical Field
The invention relates to the technical field of non-ferrous metal smelting wastewater treatment and environmental protection, in particular to a method for removing heavy metal and ammonia nitrogen from smelting wastewater.
Background
Ammonia nitrogen refers to free ammonia (NH) in water3) And ammonium ion (NH)4 +) Nitrogen and ammonia nitrogen in the form are nutrients in the water body, which can cause the mass propagation of algae, consume dissolved oxygen, harm aquatic organisms and seriously affect the water quality;
in recent decades, the development of treatment technologies for ammonia nitrogen in water has been fast, and the treatment technologies can be divided into two major types, namely a physicochemical method and a biological method according to the treatment modes. Including oxidation, chemical precipitation, stripping, ion exchange, A2O process, AO process, pre-denitrification biological denitrification and oxidation ditch process, etc. The oxidation method is exemplified by a breakpoint chlorination method, and has the principle that a chlorine agent is added into wastewater containing ammonia nitrogen, so that ammonia nitrogen is oxidized into nitrogen and escapes from the wastewater, but more byproducts such as chloramine, trihalomethane and the like are easily generated, so that the addition amount of an oxidant is greatly increased, the cost is increased, potential harm can be caused to the environment, and even the human health is harmed; the chemical precipitation method has large dosage of the added medicament, and the price of the phosphorus salt and the magnesium salt is higher; the blowing-off method for removing ammonia nitrogen is greatly influenced by temperature, blowing-off facilities need to be added, and the cost is high; in the ion exchange method, zeolite is taken as an exchanger for example, and if a large amount of ions such as K, Na, Ca and the like exist in the wastewater, the adsorption performance of the wastewater is greatly influenced; the biological method has more process equipment and complex flow.
The popularization and application of the technology are seriously hindered by the problems, and a method which can simultaneously treat heavy metal and ammonia nitrogen in the non-ferrous metal smelting wastewater, is low in cost and easy to operate is urgently needed.
Disclosure of Invention
The invention provides a method for removing heavy metal and ammonia nitrogen from smelting wastewater, which can effectively solve the problems of low cost and easy operation in the prior art of simultaneously treating heavy metal and ammonia nitrogen in non-ferrous metal smelting wastewater.
In order to achieve the purpose, the invention provides the following technical scheme: a method for removing heavy metal and ammonia nitrogen from smelting wastewater comprises the following steps:
s1, preparation of hydrogen sulfide: adding a certain amount of iron sulfide into a hydrogen sulfide generator, slowly adding dilute sulfuric acid into the hydrogen sulfide generator, and preparing hydrogen sulfide gas;
s2, preparation of polyferric sulfate: discharging the waste liquid in the hydrogen sulfide generator, adding a small amount of concentrated sulfuric acid and sodium nitrite, and blowing air to prepare polymeric ferric sulfate solution under a certain condition;
s3, high-temperature vulcanization: taking the non-ferrous metal smelting wastewater, slowly adding hydrogen sulfide gas at a constant speed, carrying out liquid-solid separation after the reaction is finished, and carrying out further advanced treatment on the filtrate;
s4, deeply removing impurities: and (4) adding the filtrate obtained in the step (S3) into the polymeric ferric sulfate solution obtained in the step (S2), adding lime milk to control the end point pH, and performing liquid-solid separation after the reaction is finished, wherein the heavy metal and ammonia nitrogen reach the emission standard of lead-zinc industrial pollutants below.
According to the technical scheme, the dosage of the iron sulfide in the step S1 is 1.0-1.2 times of the theoretical quantity when the hydrogen sulfide gas can be generated to completely precipitate the heavy metal ions in the non-ferrous metal smelting wastewater.
According to the technical scheme, the introduction time of the hydrogen sulfide gas in the step S3 is 30min, and then the temperature is raised to 85-100 ℃ to continue the reaction for 30-60 min.
According to the technical scheme, after the completion of the vulcanization in the step S3, the pH of the solution is adjusted to 10-12.
According to the technical scheme, in the step S4, the pH value of the polymeric ferric sulfate solution is adjusted to 6-9, and the temperature is increased to 85-100 ℃ for reaction for 30-60 min.
According to the technical scheme, lime milk with the quicklime concentration of 10-20% is used for adjusting the pH value to be alkaline in the steps S3 and S4.
According to the technical scheme, the ammonia nitrogen concentration in the non-ferrous metal smelting wastewater in the step S4 is 100-220 mg/L.
According to the technical scheme, a negative pressure system is added in the step S4 to collect gases such as hydrogen sulfide and ammonia gas, and the gases are sent to a tail gas station for treatment.
Compared with the prior art, the invention has the beneficial effects that: the method is scientific and reasonable, is safe and convenient to use, can effectively treat the non-ferrous metal smelting wastewater with low ammonia nitrogen content, and simultaneously ensures that the heavy metal ions in the non-ferrous metal smelting wastewater all reach the standard.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention.
In the drawings:
FIG. 1 is a schematic flow diagram of the present invention.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1: as shown in figure 1, the invention provides a technical scheme, a method for removing heavy metal and ammonia nitrogen from smelting wastewater, 1.0L of waste acid wastewater from lead-fire smelting is taken, hydrogen sulfide gas is introduced for reaction for 30min, then lime milk is added to control the end point pH to be 10, the mixture is stirred in a water bath at 85 ℃ for reaction for 30min, and the reaction is carried out by vacuum filtration;
then adding 5mL of polymeric ferric sulfate solution into the high-temperature vulcanization filtrate, adding lime milk to control the end point pH to be 8, stirring in a water bath at 85 ℃ to react for 30min, and carrying out vacuum filtration;
through two procedures, the ammonia nitrogen removal rate is over 90 percent, and the content of heavy metal and ammonia nitrogen meets the discharge standard of lead-zinc industrial wastewater.
The dirty acid pre-and final sample compositions are represented as follows:
example 2: as shown in figure 1, the invention provides a technical scheme of a method for removing heavy metal and ammonia nitrogen from smelting wastewater, and the treatment method comprises the following steps:
taking 1.0L of waste acid wastewater from lead pyrometallurgy, introducing hydrogen sulfide gas to react for 30min, adding lime milk, controlling the end point pH to be 11, stirring in a water bath at 90 ℃ to react for 45min, and performing vacuum filtration;
then adding 5mL of polymeric ferric sulfate solution into the high-temperature vulcanization filtrate, adding lime milk to control the end point pH to be 7, stirring in a water bath at 90 ℃ to react for 30min, and carrying out vacuum filtration;
through two procedures, the ammonia nitrogen removal rate is more than 95%, and the heavy metal and ammonia nitrogen content meets the discharge standard of lead-zinc industrial wastewater.
The dirty acid pre-and final sample compositions are represented as follows:
example 3: as shown in figure 1, the treatment method of the smelting wastewater for removing heavy metal and ammonia nitrogen comprises the following steps:
taking 1.0L of sewage, introducing hydrogen sulfide gas, reacting for 30min, finally adding lime milk, controlling the end point pH to be 10, stirring in a water bath at 85 ℃, reacting for half an hour, and performing vacuum filtration;
adding 1mL of polymeric ferric sulfate solution into the obtained filtrate, adding lime milk to control the end point pH to be 8, stirring in a water bath at 90 ℃ to react for 1 hour, and carrying out vacuum filtration;
through two procedures, the ammonia nitrogen removal rate is more than 98%, and the content of heavy metal and ammonia nitrogen meets the industrial wastewater discharge standard.
The composition of the sewage pre-sample and final sample is represented as follows:
compared with the prior art, the invention has the beneficial effects that: the method is scientific and reasonable, is safe and convenient to use, can effectively treat the non-ferrous metal smelting wastewater with low ammonia nitrogen content, and simultaneously ensures that the heavy metal ions in the non-ferrous metal smelting wastewater all reach the standard.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for removing heavy metal and ammonia nitrogen from smelting wastewater is characterized by comprising the following steps: the method comprises the following steps:
s1, preparation of hydrogen sulfide: adding a certain amount of iron sulfide into a hydrogen sulfide generator, slowly adding dilute sulfuric acid into the hydrogen sulfide generator, and preparing hydrogen sulfide gas;
s2, preparation of polyferric sulfate: discharging the waste liquid in the hydrogen sulfide generator, adding a small amount of concentrated sulfuric acid and sodium nitrite, and blowing air to prepare polymeric ferric sulfate solution under a certain condition;
s3, high-temperature vulcanization: taking the non-ferrous metal smelting wastewater, slowly adding hydrogen sulfide gas at a constant speed, carrying out liquid-solid separation after the reaction is finished, and carrying out further advanced treatment on the filtrate;
s4, deeply removing impurities: and (4) adding the filtrate obtained in the step (S3) into the polymeric ferric sulfate solution obtained in the step (S2), adding lime milk to control the end point pH, and performing liquid-solid separation after the reaction is finished, wherein the heavy metal and ammonia nitrogen reach the emission standard of lead-zinc industrial pollutants below.
2. The method for removing heavy metals and ammonia nitrogen from metallurgical waste water according to claim 1, wherein the amount of the iron sulfide used in step S1 is 1.0-1.2 times of the theoretical amount for generating hydrogen sulfide gas to completely precipitate heavy metal ions in the non-ferrous metal metallurgical waste water.
3. The method for removing heavy metals and ammonia nitrogen from smelting wastewater according to claim 1, wherein the time for introducing hydrogen sulfide gas in the step S3 is 30min, and then the temperature is raised to 85-100 ℃ to continue the reaction for 30-60 min.
4. The method for removing heavy metals and ammonia nitrogen from smelting wastewater according to claim 1, wherein the pH of the solution is adjusted to 10-12 after the completion of the sulfidation in step S3.
5. The method for removing heavy metals and ammonia nitrogen from smelting wastewater according to claim 1, wherein in the step S4, the pH value of the polymeric ferric sulfate solution is adjusted to 6-9, and the temperature is increased to 85-100 ℃ for reaction for 30-60 min.
6. The method for removing heavy metals and ammonia nitrogen from smelting wastewater according to claim 1, wherein lime milk with a quicklime concentration of 10-20% is used to adjust the pH value to alkalinity in both step S3 and step S4.
7. The method as claimed in claim 1, wherein the ammonia nitrogen concentration in the non-ferrous metal smelting wastewater in the step S4 is 100-220 mg/L.
8. The method for removing heavy metals and ammonia nitrogen from smelting wastewater according to claim 1, wherein a negative pressure system is added in step S4 to collect gases such as hydrogen sulfide and ammonia gas, and the collected gases are sent to a tail gas station for treatment.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911060058.4A CN110818044A (en) | 2019-11-01 | 2019-11-01 | Method for removing heavy metal and ammonia nitrogen from smelting wastewater |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911060058.4A CN110818044A (en) | 2019-11-01 | 2019-11-01 | Method for removing heavy metal and ammonia nitrogen from smelting wastewater |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628764A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Processing method of industrial waste water generated in hydrometallurgical process of nickel, cobalt and copper |
| CN107162281A (en) * | 2017-07-21 | 2017-09-15 | 甘肃中顺石化工程装备有限公司 | The processing method and Waste Water Treatment of heavy metal ion in a kind of removal smelting wastewater |
| CN108285229A (en) * | 2018-02-09 | 2018-07-17 | 武汉飞博乐环保工程有限公司 | The waste acid processing method of nonferrous smelting |
-
2019
- 2019-11-01 CN CN201911060058.4A patent/CN110818044A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101628764A (en) * | 2009-07-30 | 2010-01-20 | 浙江华友钴业股份有限公司 | Processing method of industrial waste water generated in hydrometallurgical process of nickel, cobalt and copper |
| CN107162281A (en) * | 2017-07-21 | 2017-09-15 | 甘肃中顺石化工程装备有限公司 | The processing method and Waste Water Treatment of heavy metal ion in a kind of removal smelting wastewater |
| CN108285229A (en) * | 2018-02-09 | 2018-07-17 | 武汉飞博乐环保工程有限公司 | The waste acid processing method of nonferrous smelting |
Non-Patent Citations (1)
| Title |
|---|
| 陈复: "《水处理技术及药剂大全》", 30 September 2000, 中国石化出版社, pages: 109 * |
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