CN108793378A - The removal methods of thallium in a kind of tailings reservoir wastewater containing thallium - Google Patents
The removal methods of thallium in a kind of tailings reservoir wastewater containing thallium Download PDFInfo
- Publication number
- CN108793378A CN108793378A CN201810625108.8A CN201810625108A CN108793378A CN 108793378 A CN108793378 A CN 108793378A CN 201810625108 A CN201810625108 A CN 201810625108A CN 108793378 A CN108793378 A CN 108793378A
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- China
- Prior art keywords
- thallium
- waste water
- water
- tailings reservoir
- removal methods
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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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
- C02F1/705—Reduction by metals
-
- 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
Abstract
The invention discloses a kind of removal methods of thallium in tailings reservoir wastewater containing thallium.Ferrous sulfate is first added in the present invention in tailings reservoir wastewater, and dosage is 10 ~ 150mg/L, after being uniformly mixed and reacting 1min or more, reduced iron powder is added, dosage is 1 ~ 10mg/L, is uniformly mixed and reacts 5min or more, solid-liquor separation is carried out after the completion of reaction, liquid is the water outlet after de- thallium.The present invention utilizes ferrous sulfate by the Tl in waste water3+It is reduced to Tl+, while Fe2+It is oxidized to Fe under the effect of useless water oxygen3+, the Fe (OH) that there is stronger adsorption capacity to thallium and other heavy metal ion is formed in neutral or alkalescent waste water3, be conducive to remove the thallium in waste water；Make reducing agent with reduced iron powder, by the Tl in waste water+It is reduced into the sponge thallium of solid, effective removing of thallium in waste water may be implemented；The de- thallium process of waste water is simple, and effect stability has actual application value.
Description
Technical field
The present invention relates to a kind of removal methods of thallium in tailings reservoir wastewater containing thallium, belong to field of environment engineering technology.
Background technology
Thallium is a kind of heavy metal that harmfulness is extremely strong, into human body after organism nervous system and cental system can be caused to damage
Wound.Thallium, higher than Cd, Cu, Zn, Hg etc., is only second to methyl mercury to the toxicity of mammal.Thallium and its compound have mutagenicity, cause
Carcinous and teratogenesis can lead to the generation of a variety of diseases such as cancer of the esophagus, liver cancer, colorectal cancer, make human health by great prestige
The side of body.In view of the hypertoxicity of thallium, Environmental Protection Agency USA provides that the highest content of thallium in industrial discharge water is 0.14 mg/L, life
The maximum residue limit of thallium is 2 μ g/L in drinking water；Provide that the permission content of thallium is 0.1 μ in China's standards for drinking water quality
G/L, China's industrial wastewater thallium pollution object emission control standard provide to relate to the limit value that thallium pollution object discharges in thallium trade effluent and are
0.005 mg/L。
Thallium mainly passes through dust sedimentation, the waste discharge in sulfur mineral area, print in the utilization in the mine containing thallium, ore smelting
It contaminates the approach such as the waste discharge of industry and enters water environment, Tl contents are higher in the surrounding body of mining area containing thallium minerals.Thallium is in water body
Generally with Tl+And Tl3+Two kinds of valence states exist, and in natural water body and seawater, Tl is generally with Tl+In the presence of in organic matters such as lakes
In water body, Tl is generally with Tl3+Form exists.
Currently, the pollutant abatement technology of thallium mainly has chemical precipitation method, solution extraction, ion-exchange, suction in water body
The processing methods such as attached method.
Chemical precipitation method is mainly by adding S into waste water containing thallium2-, it is jarosite, Prussian blue etc., thallium is with sediment
Form removed from water body, but its handling result is generally unable to reach thallium control standard, and is possible to generate secondary dirt
Dye.
Though ion-exchange is recommended as one of the administering method of thallium pollution water body by Environmental Protection Agency USA, usually easily
Alkaline-earth metal, which is coexisted, by other in water body containing thallium is influenced, not high to the selectivity of thallium, and there is regenerate frequent drawback.
Solution extraction is only applicable to the removal of thallium in particular solution, it is difficult to be applied to the purification of conventional thallium pollution water body.
There is absorption method large amount of adsorption, selective strong, adsorbent to be easy to the advantages such as regeneration, a kind of to have wide application prospects
Thallium pollution water body treating technology.The active charcoal of common sorbing material, nano-metal-oxide, biomaterial, composite material etc..
Though thallium in low concentration wastewater can be made to be down to 0.1 μ g/L hereinafter, but there is regeneration frequency using activated carbon column processing waste water containing thallium
It is numerous, the defects of operating cost is expensive；Metal oxide is good to the adsorption effect of thallium, but fluid resistance is big, it is difficult to be separated by solid-liquid separation, difficult
To promote and apply.
There are a more mineral resources containing thallium on the ground such as China Guangdong, Hunan, and thallium content is in the tailing of Yunfu, guangdong Province troilite
50g/t or so, thallium content is 10g/t or so in all mouth Pb-Zn deposits ores, in the Pb-Zn deposits raw ore of Hunan Golconda nonferrous metals ore
Thallium content is 5 ~ 15g/t.A thallium part in mineral resources causes smelting enterprise with concentrate transferred product to smelting enterprise
Waste water and gas contains thallium, and another part then enters Tailings Dam with milltailings, through molten leaching, dissolving and oxidation in Tailings Dam water body
The reaction of a series of complex such as reduction, a part of thallium are transferred to liquid phase from solid phase, cause to contain thallium in tailings reservoir wastewater.
In the existing tailings reservoir wastewater treatment process in China, the processing index mainly considered is COD, ammonia nitrogen and lead zinc-copper
The heavy metals such as arsenic, in original technological design and wastewater treatment operational process, typically no special consideration should be given to the removings of thallium.Due to
Multiple water body thallium pollution event has occurred in recent years, people increasingly pay close attention to the discharge of thallium in water body and air, this requires
When thallium content is more than the discharge standard of national regulation in tailings reservoir wastewater, it is necessary to carry out de- thallium processing.Therefore, tail containing thallium is developed
Mine storehouse waste water takes off thallium technique, is effectively removed to the thallium in waste water, the generation to environmental protection and control thallium pollution event, tool
There is positive realistic meaning.
Invention content
The object of the present invention is to provide a kind of removal methods of thallium in tailings reservoir wastewater containing thallium.
The purpose of the present invention is what is realized in the following way：
The removal methods of thallium in a kind of tailings reservoir wastewater containing thallium, it is characterised in that：Ferrous sulfate is added in tailings reservoir wastewater, uses
Amount is 10 ~ 150mg/L, i.e., is calculated with anhydrous slufuric acid ferrous iron, and 10 ~ 150mg of ferrous sulfate is added in 1L waste water, is uniformly mixed and anti-
After answering 1min or more, reduced iron powder is added, dosage is 1 ~ 15mg/L, i.e., 1 ~ 15mg of reduced iron powder is added in 1L waste water, and mixing is equal
It is even and react 5min or more, solid-liquor separation is carried out after the completion of reaction, liquid is the water outlet after de- thallium, and solid is that solid containing thallium gives up
Object.
Further, the ferrous sulfate is technical grade product or chemical grade product.
Further, the dosage of ferrous sulfate is preferably 25 ~ 100 mg/L.
Further, the reduced iron powder, preferably iron content are more than the reduced iron powder that 90%, fineness is less than 0.1mm.
Further, the dosage of reduced iron powder is preferably 5 ~ 10 mg/L.
Above-mentioned solid waste containing thallium enters subsequent processing disposition process.
The present invention has following advantageous effect：1, using ferrous sulfate by Tl present in waste water3+It is reduced to Tl+, together
When Fe2+It is oxidized to Fe under the action of useless water oxygen3+, formed to thallium and other heavy metals in neutral or alkalescent waste water
Ion has the Fe (OH) of stronger adsorption capacity3, be conducive to remove the thallium in waste water；2, make reducing agent with reduced iron powder, will give up
Tl in water+It is reduced into the sponge thallium of solid, effective removing of thallium in waste water may be implemented；3, waste water takes off thallium process letter
Single, easily operated, effect stability is at low cost, is easy to be combined with existing tailings reservoir wastewater treatment process, for containing thallium tailing
The removal effect of the thallium of low concentration is good in storehouse waste water, has actual application value.
Specific implementation mode
The invention will be further described with reference to embodiments, but not limited to this.
Sampling of wastewater is carried out in Hunan Baoshan Nonferrous Metals & Minerals Co., Ltd.'s tailings reservoir wastewater treating stations, is taken respectively
The inflow and outflow water sample of waste water processing station, water sample fundamental property are as shown in table 1.
1 tailings reservoir wastewater water sample fundamental property of table
As shown in Table 1, the pollution elements such as Pb, Zn, Cd, Cu, Tl are mainly contained in waste water, according to《Lead, Zn Cr coating pollutant emission mark
It is accurate》（GB25466-2010）Related request, water outlet Tl contents should be less than being equal to 0.005 mg/L, the tailings reservoir wastewater treating stations
Water inlet water sample and water outlet water sample Tl contents are exceeded.
Experiment takes into water water sample 10L every time, and ferrous sulfate is added, and after being stirred to react 2min, reduced iron powder is added, stirring is anti-
Solid-liquor separation is carried out after answering 10min, obtains the water outlet after de- thallium.In the ferrous sulfate of different amounts and the reduced iron of different amounts
Under the conditions of powder, waste water takes off thallium, and the results are shown in Table 2.
2 waste water of table takes off thallium test result
As shown in Table 2, ferrous sulfate dosage is 25mg/L, and when reduced iron powder dosage is 5mg/L, Tl contents can in processing water water outlet
To reach 0.005 mg/L；When ferrous sulfate dosage is 50mg/L, and reduced iron powder dosage is 10mg/L, Tl contents base in water outlet
This stabilization is in 0.001 mg/L.
Claims (3)
1. the removal methods of thallium in a kind of tailings reservoir wastewater containing thallium, it is characterised in that：Ferrous sulfate is added in tailings reservoir wastewater,
After being uniformly mixed and reacting 1min or more, reduced iron powder is added, is uniformly mixed and reacts 5min or more, liquid is carried out after the completion of reaction
Gu separation, liquid is the water outlet after de- thallium, and solid is solid waste containing thallium.
2. the removal methods of thallium in a kind of tailings reservoir wastewater containing thallium according to claim 1, it is characterised in that：The sulphur
Sour ferrous iron is technical grade product or chemical grade product, and the dosage of ferrous sulfate is 10 ~ 150 mg/L.
3. the removal methods of thallium in a kind of tailings reservoir wastewater containing thallium according to claim 1, it is characterised in that：Described goes back
The dosage of former iron powder is 1 ~ 15 mg/L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625108.8A CN108793378B (en) | 2018-06-17 | 2018-06-17 | Method for removing thallium from thallium-containing tailing pond wastewater |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810625108.8A CN108793378B (en) | 2018-06-17 | 2018-06-17 | Method for removing thallium from thallium-containing tailing pond wastewater |
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| CN108793378A true CN108793378A (en) | 2018-11-13 |
| CN108793378B CN108793378B (en) | 2021-05-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115286139A (en) * | 2022-08-10 | 2022-11-04 | 铜陵铜冠环保科技有限公司 | Compound preparation method and application of industrial wastewater thallium removal agent |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6274045B1 (en) * | 1995-05-19 | 2001-08-14 | Lawrence Kreisler | Method for recovering and separating metals from waste streams |
| CN1715204A (en) * | 2005-05-30 | 2006-01-04 | 广州大学 | Treating method for waste water containing thallium |
| CN101255502A (en) * | 2008-04-02 | 2008-09-03 | 河南豫光金铅股份有限公司 | Process for comprehensive recovery of indium, cadmium, thallium and zinc from lead system smoke |
| CN102884010A (en) * | 2009-09-18 | 2013-01-16 | 得克萨斯州A&M大学系统 | Zero valent iron/iron oxide mineral/ferrous iron composite for treatment of a contaminated fluid |
| CN104773863A (en) * | 2015-02-13 | 2015-07-15 | 湖南永清环保研究院有限责任公司 | Deep purification process for thallium-containing waste water |
| CN105612129A (en) * | 2013-11-04 | 2016-05-25 | 伊沃夸水处理技术有限责任公司 | Apparatus and methods for a moving bed activated iron process |
| CN106082502A (en) * | 2016-08-16 | 2016-11-09 | 华南理工大学 | A kind of remove the method for thallium in waste water |
| CN106977013A (en) * | 2017-04-24 | 2017-07-25 | 广州大学 | A kind of purifying treatment method of high chlorine waste water containing thallium and its application |
-
2018
- 2018-06-17 CN CN201810625108.8A patent/CN108793378B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6274045B1 (en) * | 1995-05-19 | 2001-08-14 | Lawrence Kreisler | Method for recovering and separating metals from waste streams |
| CN1715204A (en) * | 2005-05-30 | 2006-01-04 | 广州大学 | Treating method for waste water containing thallium |
| CN101255502A (en) * | 2008-04-02 | 2008-09-03 | 河南豫光金铅股份有限公司 | Process for comprehensive recovery of indium, cadmium, thallium and zinc from lead system smoke |
| CN102884010A (en) * | 2009-09-18 | 2013-01-16 | 得克萨斯州A&M大学系统 | Zero valent iron/iron oxide mineral/ferrous iron composite for treatment of a contaminated fluid |
| CN105612129A (en) * | 2013-11-04 | 2016-05-25 | 伊沃夸水处理技术有限责任公司 | Apparatus and methods for a moving bed activated iron process |
| CN104773863A (en) * | 2015-02-13 | 2015-07-15 | 湖南永清环保研究院有限责任公司 | Deep purification process for thallium-containing waste water |
| CN106082502A (en) * | 2016-08-16 | 2016-11-09 | 华南理工大学 | A kind of remove the method for thallium in waste water |
| CN106977013A (en) * | 2017-04-24 | 2017-07-25 | 广州大学 | A kind of purifying treatment method of high chlorine waste water containing thallium and its application |
Non-Patent Citations (1)
| Title |
|---|
| SHAOLIN LI: "Heavy metal removal using nanoscale zero-valent iron (nZVI): Theory and application", 《JOURNAL OF HAZARDOUS MATERIALS 》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115286139A (en) * | 2022-08-10 | 2022-11-04 | 铜陵铜冠环保科技有限公司 | Compound preparation method and application of industrial wastewater thallium removal agent |
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