CN115286139A - Compound preparation method and application of industrial wastewater thallium removal agent - Google Patents
Compound preparation method and application of industrial wastewater thallium removal agent Download PDFInfo
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- CN115286139A CN115286139A CN202210952695.8A CN202210952695A CN115286139A CN 115286139 A CN115286139 A CN 115286139A CN 202210952695 A CN202210952695 A CN 202210952695A CN 115286139 A CN115286139 A CN 115286139A
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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
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
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- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/285—Treatment of water, waste water, or sewage by sorption using synthetic organic sorbents
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/66—Treatment of water, waste water, or sewage by neutralisation; pH adjustment
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
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Abstract
The invention discloses a composite preparation method of an industrial wastewater thallium removal agent, which relates to the technical field of industrial wastewater treatment. The invention also provides application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal. The method has the advantages of simple and convenient treatment process of thallium in the industrial wastewater, good treatment effect, capability of reducing the dosage, reducing the treatment cost, stable sediment, no secondary pollution to the link, convenience for post treatment and suitability for large-scale treatment of the industrial wastewater.
Description
Technical Field
The invention belongs to the technical field of industrial wastewater treatment, and particularly relates to a composite preparation method and application of a thallium removal agent for industrial wastewater.
Background
Thallium is widely used as a rare metal material in the fields of medicine, aviation, electronics and the like, and is accompanied with industrial wastewater containing thallium due to the wide application of thallium. At present, thallium in industrial wastewater is eliminated mainly by a chemical precipitation method, for example, in a method for simultaneously removing cadmium and thallium in raw water in Chinese patent CN201310609199.3, sodium hydroxide is added into the raw water, the pH value is adjusted to be alkalescent, and then potassium permanganate is added; adding sodium hypochlorite or liquid chlorine, adding lime water into the raw water after full oxidation reaction, adding a flocculating agent to remove cadmium and thallium in the raw water by coprecipitation with manganese hydroxide and iron hydroxide colloid, and filtering the precipitated raw water by quartz sand. Although the process can remove thallium in sewage efficiently, the technologies have the defects of large dosage, high treatment cost, complex treatment process and inconvenience for large-scale treatment of industrial wastewater, and therefore, a convenient, quick and effective thallium removing agent for industrial wastewater is needed.
Disclosure of Invention
The invention aims to solve the defects of large dosage, high treatment cost, complex treatment process and inconvenience for large-scale treatment of industrial wastewater in the prior art, and provides a composite preparation method and application of a thallium removal agent for industrial wastewater. The thallium removal agent for industrial wastewater has the advantages of simple treatment process of thallium in industrial wastewater, good treatment effect, no secondary pollution to links, and suitability for large-scale treatment of industrial wastewater.
In order to achieve the purpose, the invention adopts the following technical scheme:
designing a composite preparation method of industrial wastewater thallium removal agent, bonding soluble ferrous salt, soluble chloride, heavy metal capture agent and polyaluminium chloride on a hollow carrier with a villus structure, and compounding into a granular industrial wastewater thallium removal agent; the method comprises the following steps:
s11, uniformly mixing soluble ferrite, soluble chloride, a heavy metal scavenger and polyaluminium chloride powder to obtain a composite material A for later use;
s12, spraying an adhesive on a hollow carrier with fluff, placing the carrier attached with the adhesive into the composite material A, stirring, screening granules wrapped with a layer of the composite material A through a screening sieve and a vibrating screen, and drying and curing the granules to obtain a granule composite agent A;
and S13, repeating the operation of the step S12 until the radius of the granular body reaches a set value, and curing to obtain the industrial wastewater thallium removal agent which is in a granular structure and wrapped by the thallium removal agent composite layer.
Furthermore, the heavy metal chelating agent is a novel three-dimensional hyperbranched sulfhydryl organic heavy metal chelating agent.
Further, the soluble ferrous salt is any one or a mixture of more than two of ferrous sulfate, ferrous chloride and ferrous carbonate.
Further, the soluble chloride salt is any one or a mixture of more than two of potassium chloride, sodium chloride, ferric chloride, magnesium chloride and calcium chloride.
Further, the molar ratio of ferrous ions to chloride ions in the soluble ferrous salt and the soluble chloride salt is more than 1.
Further, the mass ratio of the total weight of the soluble ferrous salt and the soluble chloride salt, the heavy metal scavenger and the polyaluminium chloride is 1.5.
Further, in step S13, the radius of the particles of the thallium removing agent for industrial wastewater is set to satisfy the condition that the buoyancy of the particles in water is slightly larger than the gravity of the particles.
The invention also provides an application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal, wherein the industrial wastewater thallium removal agent is used, the application comprises a low-level wastewater pool and a high-level wastewater pool, the high-level wastewater pool is communicated with the low-level wastewater pool, a shutoff valve is arranged in the middle, and the specific steps are as follows:
step 1), enabling the wastewater in the high-level wastewater pool to flow into the low-level wastewater pool in a self-flowing mode, adjusting the PH value to be 6-8, closing a shutoff valve, and continuously collecting the wastewater by the high-level wastewater pool;
step 2), putting the industrial wastewater thallium removal agent into a low-level wastewater pool in a throwing manner, and stirring the industrial wastewater thallium removal agent to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
step 3), standing for 0.5-1 hour, forming a rubber net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminum chloride, and distributing soluble ferrite, soluble chloride and a heavy metal capture agent on the rubber net to form a high-concentration area;
step 4), adsorbing thallium ions in the wastewater to the rubber net by the heavy metal catching agent, so that positive trivalent thallium ions and ferrous ions on the rubber net are subjected to oxidation reduction to generate positive monovalent thallium ions, and the generated monovalent thallium ions and original positive monovalent thallium ions in the wastewater are combined with free chloride ions on the rubber net to generate incompatible thallium chloride and are retained on the rubber net;
step 5), absorbing thallium ions in different depths of the wastewater under the action of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater;
and 6), filtering, discharging the wastewater in the low-level wastewater tank, entering the next wastewater treatment link, and repeating the steps 1) to 5) to realize continuous and deep thallium removal.
The hollow carrier in the industrial wastewater thallium removal agent is mainly used for enabling the formed thallium removal agent to have certain buoyancy and keeping the thallium removal agent floating on the water surface, the villus is mainly arranged to play a connecting role, a thallium removal agent composite layer is adhered in the preparation process of the thallium removal agent, an adhesive net and the hollow carrier are mainly adhered when the thallium removal of the wastewater is carried out, and the adhesive is mainly used for compounding various raw materials to form particles so as to facilitate the operation of thallium removal of the industrial wastewater; the main purpose of adding soluble ferrous salt is that the soluble ferrous salt releases ferrous ions in a dissolved state, and the ferrous ions can perform oxidation-reduction reaction with trivalent thallium ions in industrial wastewater to reduce the trivalent thallium ions into monovalent thallium ions, and the principle is as follows: 2Fe 2+ +Tl 3+ →2Fe 3+ +Tl 1+ (ii) a The main purpose of adding the heavy metal scavenger is to better adsorb industrial wastewater to remove thallium ions; addition of soluble chloride saltsThe method aims to release chloride ions in a dissolved state by soluble chloride salt, and the chloride ions can react with generated monovalent thallium ions and monovalent thallium ions in wastewater to generate water-insoluble thallium chloride, so that thallium can be separated and removed from industrial wastewater, and the method has the following principle: tl 1+ +Cl - →TlCl↓。
Compared with the prior art, the composite preparation method of the thallium removal agent for the industrial wastewater has the beneficial effects that:
1) The thallium removal agent has simple treatment process for thallium in the industrial wastewater, can complete the removal of thallium in the industrial wastewater only by adopting a throwing mode, is simple to operate, can form a rubber net by industrial wastewater thallium removal agent particles, and forms a high-concentration heavy metal catching agent area and a reaction area on the rubber net, so that the heavy metal catching agent can adsorb thallium in the water and react with ferrous ions and chloride ions carried on a carrier, so as to realize the adsorption and treatment of thallium in the wastewater, so that trivalent thallium is reduced to monovalent thallium.
2) The method can form a high-concentration reaction zone on a rubber net generated by industrial wastewater thallium-removing agent particles, can reduce the dosage and reduce the treatment cost.
3) The invention adopts the carrier with a hollow structure, so that the industrial wastewater thallium removal agent particles can firstly float on the water surface, and are convenient to stir to form the rubber net.
4) The selected soluble ferrous salt, soluble chloride and polyaluminium chloride have low price, can reduce the production cost, have stable sediment, do not cause secondary pollution to links, are convenient for post treatment, and can be suitable for large-scale treatment of industrial wastewater.
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 diagram of the structure of a thallium remover particle for industrial wastewater according to the present invention;
FIG. 2 is a schematic structural diagram of adsorption of thallium removal agent particles for industrial wastewater in the invention;
labeled in the figure as: 1. a hollow carrier; 2. fluff; 3. a thallium removal agent composite layer; 4. and (4) a rubber net.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention; it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention.
The structural features of the present invention will now be described in detail with reference to the accompanying drawings.
Referring to fig. 1-2, a composite preparation method of the industrial wastewater thallium removal agent is disclosed, wherein a soluble ferrite, a soluble chloride salt, a heavy metal catcher and polyaluminum chloride are bonded to a hollow carrier 1 with a fluff 2 structure by adhesive bonding, and the composite is compounded into a granular industrial wastewater thallium removal agent. The adhesive is organic adhesive and is prepared from attapulgite clay and surfactant. The heavy metal chelating agent is a novel three-dimensional hyperbranched sulfhydryl organic heavy metal chelating agent. The soluble ferrous salt is any one or a mixture of more than two of ferrous sulfate, ferrous chloride and ferrous carbonate. The soluble chloride salt is one or more of potassium chloride, sodium chloride, ferric chloride, magnesium chloride and calcium chloride. The molar ratio of ferrous ions to chloride ions in the soluble ferrous salt and the soluble chloride salt is 1.
The composite preparation method of the industrial wastewater thallium removal agent specifically comprises the following steps:
s11, uniformly mixing soluble ferrite, soluble chloride, a heavy metal catching agent and polymerized aluminum chloride powder to obtain a composite material A for later use;
s12, spraying an adhesive on the hollow carrier 1 with the fluff 2, placing the carrier attached with the adhesive into the composite material A, stirring, screening out granules wrapped with a layer of the composite material A through a screening sieve by vibration, and drying and curing the granules to obtain a granular composite agent A;
and S13, repeating the operation of the step S12 until the radius of the granular body reaches a set value, and curing to obtain the industrial wastewater thallium removal agent which is in a granular structure and wraps the thallium removal agent composite layer 3. Wherein, the set value of the radius of the granular body of the thallium removal agent for industrial wastewater is satisfied, and the buoyancy of the granular body in water is slightly larger than the gravity of the granular body.
Example 1
The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the weight ratio of the total weight of soluble ferrous salt and soluble chloride salt to the weight of a heavy metal scavenger to polyaluminum chloride is (1): 1, wherein the soluble ferrous salt specifically adopts ferrous chloride, and the soluble chloride specifically adopts sodium chloride, and the method comprises the following steps:
step 1), putting 10L of industrial wastewater with thallium content of 1.5mg/L into an industrial wastewater thallium removal agent, and stirring the industrial wastewater thallium removal agent to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
step 2), standing for 0.5 hour, forming a rubber net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminium chloride, and distributing ferrous chloride, a heavy metal scavenger and sodium chloride on the rubber net to form a high-concentration area;
step 3), adsorbing thallium ions in the wastewater to the rubber net by the heavy metal capture agent, so that monovalent thallium ions generated by reaction in the wastewater and original positive monovalent thallium ions in the wastewater are combined with free chloride ions on the rubber net to generate incompatible thallium chloride and are retained on the rubber net;
and 4) adsorbing thallium ions in different depths of the wastewater under the actions of stirring and particle adsorption, taking total input quantity of the thallium removal agent for deeply removing thallium from the industrial wastewater to be 572mg, taking industrial wastewater supernatant, and measuring the content of thallium in the wastewater to be 0.0014mg/L by adopting an inductively coupled plasma mass spectrometer.
Example 2
The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the weight ratio of the total weight of soluble ferrous salt and soluble chloride salt to the weight of a heavy metal scavenger to polyaluminum chloride is (1): 10, the industrial wastewater thallium removal agent, wherein the soluble ferrous salt specifically adopts ferrous chloride, and the soluble chloride specifically adopts sodium chloride, comprises the following steps:
step 1), putting 10L of industrial wastewater with thallium content of 1.5mg/L into an industrial wastewater thallium removal agent, and stirring the industrial wastewater thallium removal agent to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
step 2), standing for 0.5 hour, forming a rubber net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminium chloride, and distributing ferrous chloride, a heavy metal scavenger and sodium chloride on the rubber net to form a high-concentration area;
step 3), adsorbing thallium ions in the wastewater to a rubber net by the heavy metal capture agent, combining monovalent thallium ions generated by reaction in the wastewater and original positive monovalent thallium ions in the wastewater with free chloride ions on the rubber net to generate incompatible thallium chloride, and retaining the incompatible thallium chloride on the rubber net;
and 4) adsorbing thallium ions in different depths of the wastewater under the effects of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater, wherein the total input quantity of the thallium removal agent for the industrial wastewater is 457mg, taking industrial wastewater supernatant, and measuring the content of thallium in the wastewater to be 0.0012mg/L by adopting an inductively coupled plasma mass spectrometer.
Example 3
The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the weight ratio of the total weight of soluble ferrous salt and soluble chloride salt, the heavy metal capture agent and the polyaluminium chloride is 1: 20, the industrial wastewater thallium removal agent, wherein the soluble ferrous salt specifically adopts ferrous chloride, and the soluble chloride specifically adopts sodium chloride, comprises the following steps:
step 1), putting 10L of industrial wastewater with thallium content of 1.5mg/L into an industrial wastewater thallium removal agent, and stirring the industrial wastewater thallium removal agent to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
step 2), standing for 0.5 hour, forming a rubber net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminium chloride, and distributing ferrous chloride and sodium chloride on the rubber net to form a high-concentration area;
step 3), adsorbing thallium ions in the wastewater to a rubber net by the heavy metal capture agent, combining monovalent thallium ions generated by reaction in the wastewater and original positive monovalent thallium ions in the wastewater with free chloride ions on the rubber net to generate incompatible thallium chloride, and retaining the incompatible thallium chloride on the rubber net;
and 4) adsorbing thallium ions in different depths of the wastewater under the effects of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater, wherein the total input amount of the thallium removal agent for the industrial wastewater is 391mg, taking industrial wastewater supernatant, and measuring the content of thallium in the wastewater to be 0.0013mg/L by adopting an inductively coupled plasma mass spectrometer.
Example 4
The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the weight ratio of the total weight of soluble ferrous salt and soluble chloride salt to the weight of a heavy metal scavenger to polyaluminum chloride is (1): 40, wherein the soluble ferrous salt specifically adopts ferrous chloride, and the soluble chloride specifically adopts sodium chloride, and the method comprises the following steps:
step 1), putting 10L of industrial wastewater with 1.5mg/L of thallium into an industrial wastewater thallium remover, and stirring the industrial wastewater remover to ensure that the industrial wastewater remover is fully contacted with the wastewater;
step 2), standing for 0.5 hour, forming a glue net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminum chloride, and distributing ferrous chloride and sodium chloride on the glue net to form a high-concentration area;
step 3), adsorbing thallium ions in the wastewater to a gel net by a heavy metal capture agent, combining monovalent thallium ions generated by reaction in the wastewater and original positive monovalent thallium ions in the wastewater with free chloride ions on the gel net to generate difficultly-compatible thallium chloride, and retaining the difficultly-compatible thallium chloride on the gel net;
and 4) adsorbing thallium ions in different depths of the wastewater under the actions of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater, wherein the total input amount of the thallium removal agent for the industrial wastewater is 605mg, taking industrial wastewater supernatant, and measuring the content of thallium in the wastewater to be 0.0015mg/L by adopting an inductively coupled plasma mass spectrometer.
Example 5
The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the weight ratio of the total weight of soluble ferrous salt and soluble chloride salt to the weight of a heavy metal scavenger to polyaluminum chloride is (1): 50, the industrial wastewater thallium removal agent, wherein the soluble ferrous salt specifically adopts ferrous chloride, and the soluble chloride specifically adopts sodium chloride, comprises the following steps:
step 1), putting 10L of industrial wastewater with thallium content of 1.5mg/L into an industrial wastewater thallium removal agent, and stirring the industrial wastewater thallium removal agent to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
step 2), standing for 0.5 hour, forming a glue net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminum chloride, and distributing ferrous chloride and sodium chloride on the glue net to form a high-concentration area;
step 3), adsorbing thallium ions in the wastewater to a rubber net by the heavy metal capture agent, combining monovalent thallium ions generated by reaction in the wastewater and original positive monovalent thallium ions in the wastewater with free chloride ions on the rubber net to generate incompatible thallium chloride, and retaining the incompatible thallium chloride on the rubber net;
and 4) adsorbing thallium ions in different depths of the wastewater under the actions of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater, wherein the total input amount of the thallium removing agent in the industrial wastewater is 1087mg, taking the supernatant of the industrial wastewater, and measuring the content of thallium in the wastewater to be 0.0013mg/L by adopting an inductively coupled plasma mass spectrometer.
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 (7)
1. A composite preparation method of industrial wastewater thallium removal agent is characterized in that soluble ferrous salt, soluble chloride, heavy metal catching agent and polyaluminium chloride are bonded to a hollow carrier (1) with a fluff (2) structure to be compounded into a granular industrial wastewater thallium removal agent; the method comprises the following steps:
s11, uniformly mixing soluble ferrite, soluble chloride, a heavy metal scavenger and polyaluminium chloride powder to obtain a composite material A for later use;
s12, spraying an adhesive on the hollow carrier (1) with the fluff (2), placing the carrier attached with the adhesive into the composite material A, stirring, screening out granules wrapped with a layer of the composite material A through a screening sieve by vibration, and drying and curing the granules to obtain a granule composite agent A;
and S13, repeating the operation of the step S12 until the radius of the granular body reaches a set value, and curing to obtain the industrial wastewater thallium removal agent which is in a granular structure and wraps the thallium removal agent composite layer (3).
2. The composite preparation method of the industrial wastewater thallium removal agent as claimed in claim 1, wherein the heavy metal scavenger is a novel three-dimensional hyperbranched sulfhydryl organic heavy metal chelator.
3. The composite preparation method of the thallium removing agent for industrial wastewater according to claim 1, wherein the soluble ferrous salt is any one or a mixture of more than two of ferrous sulfate, ferrous chloride and ferrous carbonate.
4. The composite preparation method of the thallium removal agent for industrial wastewater according to claim 1, wherein the soluble chloride salt is any one or a mixture of two or more of potassium chloride, sodium chloride, ferric chloride, magnesium chloride and calcium chloride.
5. The composite preparation method of the thallium removal agent for industrial wastewater according to claim 1, wherein the molar ratio of ferrous ions to chloride ions in the soluble ferrous salt and the soluble chloride salt is greater than 1.
6. The composite preparation method of the thallium removal agent for the industrial wastewater as claimed in claim 1, wherein the mass ratio of the total weight of the soluble ferrous salt and the soluble chloride salt, the heavy metal scavenger, and the polyaluminium chloride is 1.5.
7. The application of the industrial wastewater thallium removal agent in industrial wastewater thallium removal is characterized in that the application comprises a lower wastewater tank and an upper wastewater tank, the upper wastewater tank is communicated with the lower wastewater tank, and a shutoff valve is arranged between the upper wastewater tank and the lower wastewater tank, and the method comprises the following specific steps:
s21, enabling the wastewater in the high-level wastewater pool to flow into the low-level wastewater pool in a self-flowing mode, adjusting the PH value to be 6-8, closing a shutoff valve, and continuously collecting the wastewater by the high-level wastewater pool;
s22, putting the industrial wastewater thallium removal agent into a low-level wastewater pool in a throwing mode, and stirring the wastewater pool to ensure that the industrial wastewater thallium removal agent is fully contacted with the wastewater;
s23, standing for 0.5-1 hour, forming a rubber net with a net structure around the industrial wastewater thallium removal agent particles under the action of polyaluminium chloride, and distributing a soluble ferrite, a soluble chloride and a heavy metal catcher on the rubber net to form a high-concentration area;
s24, adsorbing thallium ions in the wastewater to the rubber net by the heavy metal capture agent, so that positive trivalent thallium ions and ferrous ions on the rubber net are subjected to oxidation reduction to generate positive monovalent thallium ions, and the generated monovalent thallium ions and original positive monovalent thallium ions in the wastewater are combined with free chloride ions on the rubber net to generate insoluble thallium chloride and are retained on the rubber net;
s25, adsorbing thallium ions in different depths of the wastewater under the action of stirring and particle adsorption to finish deep removal of thallium in the industrial wastewater;
s26, filtering, discharging the wastewater in the low-level wastewater tank, entering the next wastewater treatment link, and repeating the steps from S21 to S25 to realize continuous and deep thallium removal.
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| CN108295822A (en) * | 2018-03-12 | 2018-07-20 | 合肥同佑电子科技有限公司 | A kind of factory's pollution discharge pond water quality cleansing agent and preparation method thereof |
| CN108793378A (en) * | 2018-06-17 | 2018-11-13 | 湘潭大学 | The removal methods of thallium in a kind of tailings reservoir wastewater containing thallium |
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2022
- 2022-08-10 CN CN202210952695.8A patent/CN115286139A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102013004317A1 (en) * | 2012-03-26 | 2013-09-26 | Thüringisches Institut für Textil- und Kunststoff-Forschung e.V. | Lyocell-shaped body for the selective binding of monovalent heavy metal ions, in particular of thallium and cesium ions and their radioactive isotopes |
| CN103739005A (en) * | 2014-01-18 | 2014-04-23 | 广州大学 | Method for preparing thallous chloride using lead zinc ore smelting wastewater as raw material |
| CN104925988A (en) * | 2015-05-20 | 2015-09-23 | 南京格洛特环境工程股份有限公司 | Deep treatment method for polluted wastewater containing heavy metal such as thallium and the like |
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| CN108295822A (en) * | 2018-03-12 | 2018-07-20 | 合肥同佑电子科技有限公司 | A kind of factory's pollution discharge pond water quality cleansing agent and preparation method thereof |
| CN108793378A (en) * | 2018-06-17 | 2018-11-13 | 湘潭大学 | The removal methods of thallium in a kind of tailings reservoir wastewater containing thallium |
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