CN104445718A - Method for treating gold mine cyanidation waste residue leaching solution - Google Patents
Method for treating gold mine cyanidation waste residue leaching solution Download PDFInfo
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- CN104445718A CN104445718A CN201410641843.XA CN201410641843A CN104445718A CN 104445718 A CN104445718 A CN 104445718A CN 201410641843 A CN201410641843 A CN 201410641843A CN 104445718 A CN104445718 A CN 104445718A
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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
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
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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
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
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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
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
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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
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
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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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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
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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
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/10—Photocatalysts
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Abstract
The invention discloses a method for treating gold mine cyanidation waste residue leaching solution. The method comprises chemical oxidation treatment, ultraviolet/ozone oxidation treatment, coagulation sedimentation treatment and photocatalysis oxidation treatment. The method for treating gold mine cyanidation waste residue leaching solution comprises the following steps: firstly oxidizing easily treated pollutants in the wastewater by selecting hydrogen peroxide as an oxidant, removing the pollutants such as suspension particles, heavy metal ions and complexes in the treated wastewater by using a coagulation sedimentation method, removing complex pollutants in the wastewater of the precipitated supernatant liquid by using a photo-catalytic oxidation technique. The method is integrated with a hydrogen peroxide oxidation method, an ultraviolet/ozone oxidation treatment method, a coagulation sedimentation treatment method and a photo-catalytic oxidation method for taking a synergic effect on deep treatment of the gold mine cyanidation waste residue leaching solution; the method for treating the gold mine cyanidation waste residue leaching solution has the advantages that the treatment effect is good, the treatment efficiency is high, the system stably runs, the technical process is simple and the industrial application is convenient to implement; the treated wastewater can be used as recycling water or discharged up to standard.
Description
Technical field
The present invention relates to field of Environment Protection Pollutant Treatment method, particularly a kind of gold mine cyaniding waste residue leaching liquor administering method.
Background technology
Gold mine in recovery process due to use Cyanide Process, a large amount of cyaniding waste residues can be produced, these cyaniding waste residues can produce a large amount of leaching liquors in the process of drenching with rain, not only containing a certain amount of hypertoxic prussiate in these leaching liquors, but also contain the heavy metal ion of thiocyanate-and copper, zinc, lead and so on, if can not get effective process, great environmental protection hidden danger will be produced.At present, the method of conventional Treatment of Cyanide-containing Wastewater has acidifying absorption method, Pomolio-Celdecor process, Yin Kefa, sulfurous gas method etc. both at home and abroad, although adopt acidifying absorption method can reclaim a certain amount of prussiate, but because recovery of cyanide is not thorough, the remaining a certain amount of prussiate of meeting in waste water, thiocyanate ion and some heavy metal ion are not all effectively removed simultaneously.Chlorine residue that can be remaining a large amount of after Pomolio-Celdecor process process, produces ClCN product, causes secondary pollution problem, and the heavy metal ion such as copper, zinc, lead simultaneously in waste water fails effectively to be administered.Although Yin Kefa and sulfurous gas method can make cyanid up to standard, the thiocyanate-in waste water fails to be processed, and in addition, the waste residue produced in process heavy metal process is also more, easily causes secondary pollution.Therefore, also still lack more satisfactory method in cyanide wastewater process, if resolve this problem, have important meaning by the Sustainable development of China's gold industry and the environment protection of gold mine.
Summary of the invention
Object of the present invention is exactly the problems referred to above existed for existing treatment process, and provides the cyaniding waste residue leaching liquor administering method that a kind of technical process is simple, treatment effect good, processing efficiency is high, stable.The present invention is according to the feature containing multiple pollutants such as prussiate, thiocyanate-and heavy metals in gold mine cyaniding waste residue leaching liquor, first hydrogen peroxide is selected to carry out oxide treatment as oxygenant to pollutent more tractable in waste water, then by the synergy of ultraviolet and ozone, to the further oxide treatment of Pollutants in Wastewater, waste water after process is by pollutents such as suspended particulate, heavy metal ion and complex compounds in coagulating sedimentation removal waste water, and the supernatant liquor after precipitation adopts photocatalytic oxidation to remove complicated pollutent in waste water.Concrete technology step is as follows:
(1) cyaniding waste residue leaching liquor is after grid filtration, delivers to mixing and stirring system, adds acid-base reagent and regulates between wastewater pH to 9 ~ 11, adds oxygenant and catalyzer carries out preliminary oxidation process 10min ~ 60min;
(2) processed waste water enters into UV/ozone treatment system, and under ultra violet lamp condition, pass into ozone and carry out ultraviolet and the reaction of ozone cooperative advanced oxidation, the reaction times is 15min ~ 120min;
(3) waste water after oxidizing reaction adds flocculation agent successively under whipped state and flocculation agent carries out coagulating sedimentation, and after coagulation, waste water enters settling tank and staticly settles 15min ~ 120min;
(4) supernatant liquor after precipitation enters photocatalysis oxidation reaction system, and under ultraviolet and nano-titania photocatalyst material effects, carry out degradation treatment to the pollutent of remnants, the treatment time is 15min ~ 120min;
(5) waste water after having processed returns in the technological process of production or qualified discharge.
In described step (1), sour reagent is sulfuric acid or hydrochloric acid, and alkali reagent is sodium hydroxide solution or milk of lime, and oxygenant is hydrogen peroxide solution, and catalyzer is copper-bath.
In described step (2), ultraviolet lamp wavelength is 200nm ~ 400nm, the power of ultraviolet lamp and the intake of ozone be how many and process index request and determining according to the cyanide content in waste water, cyanide content is high, process index request is tight, the corresponding increase of power of ultraviolet lamp, and the intake of ozone is corresponding to be increased, otherwise, cyanide content is low, process index request pine, the corresponding reduction of power of ultraviolet lamp, the corresponding minimizing of intake of ozone.
In described step (3), flocculation agent is polymer-inorganic salt flocculation agent, and flocculation agent is polyacrylamide, and flocculation agent and flocculation agent are all mixed with solution state and add.
In described step (4), photocatalysis oxidation reaction internal system is provided with ultraviolet lamp tube and nano-titania photocatalyst material, and nano titanium oxide uniform application is on the ancillary item of reactor wall or inside reactor.
Beneficial effect of the present invention:
The present invention is according to, unmanageable feature complicated containing pollutent in gold mine cyaniding waste residue leaching liquor, hydrogen peroxide oxidation method, UV/ozone advanced oxidation processes, coagulant sedimentation and photocatalytic oxidation are combined, work in coordination with and advanced treatment is carried out to gold mine cyaniding waste residue leaching liquor, have that treatment effect is good, processing efficiency is high, system run all right, technical process are simple, be convenient to realize the advantages such as industrial application, the waste water after process can return the technological process of production and use or qualified discharge as reuse water.
Embodiment
The present invention includes following steps:
(1) cyaniding waste residue leaching liquor is after grid filtration, delivers to mixing and stirring system, adds acid-base reagent and regulates between wastewater pH to 9 ~ 11, adds oxygenant and catalyzer carries out preliminary oxidation process 10min ~ 60min;
(2) processed waste water enters into UV/ozone treatment system, and under ultra violet lamp condition, pass into ozone and carry out ultraviolet and the reaction of ozone cooperative advanced oxidation, the reaction times is 15min ~ 120min;
(3) waste water after oxidizing reaction adds flocculation agent successively under whipped state and flocculation agent carries out coagulating sedimentation, and after coagulation, waste water enters settling tank and staticly settles 15min ~ 120min;
(4) supernatant liquor after precipitation enters photocatalysis oxidation reaction system, and under ultraviolet and nano-titania photocatalyst material effects, carry out degradation treatment to the pollutent of remnants, the treatment time is 15min ~ 120min;
(5) waste water after having processed returns in the technological process of production or qualified discharge.
In described step (1), sour reagent is sulfuric acid or hydrochloric acid, and alkali reagent is sodium hydroxide solution or milk of lime, and oxygenant is hydrogen peroxide solution, and catalyzer is copper-bath.
In described step (2), ultraviolet lamp wavelength is 200nm ~ 400nm, the power of ultraviolet lamp and the intake of ozone be how many and process index request and determining according to the cyanide content in waste water, cyanide content is high, process index request is tight, the corresponding increase of power of ultraviolet lamp, and the intake of ozone is corresponding to be increased, otherwise, cyanide content is low, process index request pine, the corresponding reduction of power of ultraviolet lamp, the corresponding minimizing of intake of ozone.
In described step (3), flocculation agent is polymer-inorganic salt flocculation agent, and flocculation agent is polyacrylamide, and flocculation agent and flocculation agent are all mixed with solution state and add.
In described step (4), photocatalysis oxidation reaction internal system is provided with ultraviolet lamp tube and nano-titania photocatalyst material, and nano titanium oxide uniform application is on the ancillary item of reactor wall or inside reactor.
Specific examples 1:
Certain gold mine cyaniding waste residue leaching liquor, pH is 9.6, CN
tfor 226.25mg/L, SCN
-for 78.24mg/L, Cu
2+for 65.86mg/L, Fe
3+for 7.26mg/L, COD are 214.28mg/L, other heavy metal ion in addition containing trace.Get 5L waste water and be placed in steel basin, open and stir, it is 0.8m/s that linear velocity is stirred in adjustment, add the hydrogen peroxide solution 60mL of 30%, the copper-bath 1mL of 5%, reaction 30min, stop stirring, waste water is moved in the reactor that ultraviolet lamp device and ozonation aerated device are housed, ultraviolet lamp power is 4W, wavelength is 254nm, erect the central position being placed on inside reactor, ozonation aerated device adopts ceramic micropore aerator, be placed in the bottom in reactor, reaction starts rear unlatching ultraviolet lamp, pass into ozone reaction 30min, ozone intake is 980mg, reaction terminates rear stopping and passing into ozone, waste water is moved in steel basin, open and stir, the polymeric aluminum chlorides solution 15mL adding 10g/L under stirring linear velocity is 0.8m/s condition stirs 5min, then 0.5 ‰ anionic polyacrylamide solution 5mL are added, regulate after continuing to stir 2min and stir linear velocity 0.1m/s stirring 5min, stop stirring, leave standstill 30min, supernatant liquor is moved in photocatalysis oxidation reaction system and processes, ultraviolet lamp power is 8W, wavelength is 254nm, treatment time 60min.The water outlet of waste water after system process through assay pH between 8 ~ 9, CN
t< 0.1mg/L, SCN
-< 0.5mg/L, Cu
2+< 0.5mg/L, COD < 20mg/L, first kind pollutent is all within the highest permission emission concentration limit value, and after process, water quality can reach reuse or emission standard.
Specific examples 2:
Certain gold mine cyaniding waste residue leaching liquor, pH is 8.5, CN
tfor 165.52mg/L, SCN
-for 43.65mg/L, COD are 179.24mg/L, other heavy metal ion in addition containing trace.Get 5L waste water and be placed in steel basin, pH to 10.0 is regulated with the sodium hydroxide solution of 1% under stirring linear velocity is 0.8m/s condition, add the hydrogen peroxide solution 45mL of 30%, the copper-bath 1mL of 5%, reaction 30min, stop stirring, waste water is moved in the reactor that ultraviolet lamp device and ozonation aerated device are housed, ultraviolet lamp power is 4W, wavelength is 254nm, erect the central position being placed on inside reactor, ozonation aerated device adopts ceramic micropore aerator, be placed in the bottom in reactor, reaction starts rear unlatching ultraviolet lamp, pass into ozone reaction 30min, ozone intake is 620mg, reaction terminates rear stopping and passing into ozone, waste water is moved in steel basin, open and stir, the polymeric aluminum chlorides solution 5mL adding 10g/L under stirring linear velocity is 0.8m/s condition stirs 5min, then 0.5 ‰ anionic polyacrylamide solution 2mL are added, regulate after continuing to stir 2min and stir linear velocity 0.1m/s stirring 5min, stop stirring, leave standstill 30min, supernatant liquor is moved in photocatalysis oxidation reaction system and processes, ultraviolet lamp power is 8W, wavelength is 254nm, treatment time 60min.The water outlet of waste water after system process through assay pH between 8 ~ 9, CN
t< 0.1mg/L, SCN
-< 0.5mg/L, Cu
2+< 0.5mg/L, COD < 20mg/L, first kind pollutent is all within the highest permission emission concentration limit value, and after process, water quality can reach reuse or emission standard.
Claims (5)
1. a gold mine cyaniding waste residue leaching liquor administering method, the step of the method is as follows:
(1) cyaniding waste residue leaching liquor is after grid filtration, delivers to mixing and stirring system, adds acid-base reagent and regulates between wastewater pH to 9 ~ 11, adds oxygenant and catalyzer carries out preliminary oxidation process 10min ~ 60min;
(2) processed waste water enters into UV/ozone treatment system, and under ultra violet lamp condition, pass into ozone and carry out ultraviolet and the reaction of ozone cooperative advanced oxidation, the reaction times is 15min ~ 120min;
(3) waste water after oxidizing reaction adds flocculation agent successively under whipped state and flocculation agent carries out coagulating sedimentation, and after coagulation, waste water enters settling tank and staticly settles 15min ~ 120min;
(4) supernatant liquor after precipitation enters photocatalysis oxidation reaction system, and under ultraviolet and nano-titania photocatalyst material effects, carry out degradation treatment to the pollutent of remnants, the treatment time is 15min ~ 120min;
(5) waste water after having processed returns in the technological process of production or qualified discharge.
2. a kind of gold mine cyaniding waste residue leaching liquor administering method according to claim 1, it is characterized in that: in described step (1), sour reagent is sulfuric acid or hydrochloric acid, and alkali reagent is sodium hydroxide solution or milk of lime, oxygenant is hydrogen peroxide solution, and catalyzer is copper-bath.
3. a kind of gold mine cyaniding waste residue leaching liquor administering method according to claim 1, it is characterized in that: in described step (2), ultraviolet lamp wavelength is 200nm ~ 400nm, the power of ultraviolet lamp and the intake of ozone be how many and process index request and determining according to the cyanide content in waste water, cyanide content is high, process index request is tight, the corresponding increase of power of ultraviolet lamp, the intake of ozone is corresponding to be increased, otherwise, cyanide content is low, process index request pine, the corresponding reduction of power of ultraviolet lamp, the corresponding minimizing of intake of ozone.
4. a kind of gold mine cyaniding waste residue leaching liquor administering method according to claim 1, it is characterized in that: in described step (3), flocculation agent is polymer-inorganic salt flocculation agent, and flocculation agent is polyacrylamide, and flocculation agent and flocculation agent are all mixed with solution state and add.
5. a kind of gold mine cyaniding waste residue leaching liquor administering method according to claim 1, it is characterized in that: in described step (4), photocatalysis oxidation reaction internal system is provided with ultraviolet lamp tube and nano-titania photocatalyst material, and nano titanium oxide uniform application is on the ancillary item of reactor wall or inside reactor.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923543A (en) * | 2015-06-10 | 2015-09-23 | 长春黄金研究院 | Cyanogen-containing tailing slag treatment method |
| CN104923557A (en) * | 2015-07-08 | 2015-09-23 | 长春黄金研究院 | Cyanide contaminated soil restoring method |
| CN105127181A (en) * | 2015-08-23 | 2015-12-09 | 长春黄金研究院 | In-situ remediation treating method for gold tailing pond |
| CN105293791A (en) * | 2015-10-10 | 2016-02-03 | 贵州万山兴隆锰业有限公司 | Treatment method for manganese ore wastewater |
| CN105776688A (en) * | 2016-03-29 | 2016-07-20 | 刘牧 | Treatment method of algae-laden water or high-concentration organic waste water |
| CN107716516A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | A kind of cyanide minimizing technology of cyanidation tailings |
| CN109052615A (en) * | 2018-08-16 | 2018-12-21 | 李士华 | A kind of free radical high-level oxidation technology |
| CN115920296A (en) * | 2022-12-23 | 2023-04-07 | 四川万里锌业有限公司 | Non-toxic cleaning method for waste slag containing zinc |
| CN117583363A (en) * | 2024-01-04 | 2024-02-23 | 昆明理工大学 | A weathering method based on UV irradiation of waste residue |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923543A (en) * | 2015-06-10 | 2015-09-23 | 长春黄金研究院 | Cyanogen-containing tailing slag treatment method |
| CN104923557A (en) * | 2015-07-08 | 2015-09-23 | 长春黄金研究院 | Cyanide contaminated soil restoring method |
| CN105127181A (en) * | 2015-08-23 | 2015-12-09 | 长春黄金研究院 | In-situ remediation treating method for gold tailing pond |
| CN105293791A (en) * | 2015-10-10 | 2016-02-03 | 贵州万山兴隆锰业有限公司 | Treatment method for manganese ore wastewater |
| CN105776688A (en) * | 2016-03-29 | 2016-07-20 | 刘牧 | Treatment method of algae-laden water or high-concentration organic waste water |
| CN107716516A (en) * | 2017-10-31 | 2018-02-23 | 长春黄金研究院 | A kind of cyanide minimizing technology of cyanidation tailings |
| CN109052615A (en) * | 2018-08-16 | 2018-12-21 | 李士华 | A kind of free radical high-level oxidation technology |
| CN115920296A (en) * | 2022-12-23 | 2023-04-07 | 四川万里锌业有限公司 | Non-toxic cleaning method for waste slag containing zinc |
| CN115920296B (en) * | 2022-12-23 | 2023-12-08 | 四川万里锌业有限公司 | Non-toxic cleaning method for zinc-containing waste residues |
| CN117583363A (en) * | 2024-01-04 | 2024-02-23 | 昆明理工大学 | A weathering method based on UV irradiation of waste residue |
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|---|---|
| CN104445718B (en) | 2016-04-20 |
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