CN112479333A - Heavy metal ion passivation stabilizer for treating residues by using flowback liquid and preparation method - Google Patents
Heavy metal ion passivation stabilizer for treating residues by using flowback liquid and preparation method Download PDFInfo
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- CN112479333A CN112479333A CN202011407753.6A CN202011407753A CN112479333A CN 112479333 A CN112479333 A CN 112479333A CN 202011407753 A CN202011407753 A CN 202011407753A CN 112479333 A CN112479333 A CN 112479333A
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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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/24—Naturally occurring macromolecular compounds, e.g. humic acids or their derivatives
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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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/286—Treatment of water, waste water, or sewage by sorption using natural organic sorbents or derivatives thereof
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
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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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- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Water Treatment By Sorption (AREA)
- Processing Of Solid Wastes (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides a heavy metal ion passivation stabilizer for treating residues by using a flow-back liquid and a preparation method thereof, wherein the stabilizer comprises the following components in parts by weight: 0.5-1% of sodium sulfide, 20-30% of monopotassium phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent. The heavy metal adsorbent comprises lysimachia and mushroom dregs. The heavy metal ion passivation stabilizer can reduce the migration rate of heavy metal ions in the environment and inhibit the toxicity of the heavy metal ions to microorganisms, the heavy metal ion passivation stabilizer formula provided by the invention is used for treating oil field measure return liquid treatment residues, the stable efficiency of Cu, Zn, Cd, Pb, Hg and Ni can be up to 88% at least after stable treatment for 7 days, and the stable efficiency of Cr can be up to 83 at least.
Description
Technical Field
The invention relates to the field of deep treatment of bottom mud or residues after treatment of waste liquid in oil field measures, in particular to a preparation method of a heavy metal ion passivation stabilizer for treating residues by using a flow-back liquid.
Background
In the production process of the oil field, various operation measures such as fracturing, acidification, profile control, hot washing and the like can be adopted according to production requirements, and the measures enable the back drainage to contain a large amount of chemical substances, such as acid washing back drainage containing a large amount of surfactants and fracturing back drainage containing high molecular substances such as guar gum and the like; the entry of these chemicals into the gathering system can severely disrupt the proper operation of the production system. The chemical substances form a large amount of measure waste liquid, and the measure waste liquid enters a sewage treatment station for corresponding treatment to form residue after the measure waste liquid is intensively treated, and the property of the residue is close to that of oily sludge and is far different from that of common municipal sludge in components. The waste contains a large amount of chemical reagents, crude oil residues, harmful microorganisms and heavy metal inorganic pollutants such as copper, chromium, lead and the like, and if the waste is accumulated in the environment or is not treated properly, the waste can cause great harm to the environment.
In the field of oil and gas exploitation, the measures of waste liquid and residues have various influence factors on treatment due to complex pollutant components, so that a residue treatment technology is lacked at present, and a technology for repairing and treating heavy metal ions is reported at present.
Disclosure of Invention
The formula provided by the invention can effectively improve the heavy metal ion stabilizing efficiency of the oil field measure flowback fluid treatment residue, effectively reduce the activity of heavy metals in the measure effluent residue, and solve the problems of heavy metal ion toxicity and pollution caused by the waste liquor residue to the environment.
The technical scheme adopted by the invention is as follows:
a heavy metal ion passivation stabilizer for treating residues of flowback liquid comprises the following components in parts by weight: 0.5-1% of sodium sulfide, 20-30% of monopotassium phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent.
A heavy metal ion passivation stabilizer for treating residues of flowback liquid comprises the following components in parts by weight: 0.6% of sodium sulfide, 22.4% of monopotassium phosphate, 13.5% of dithiocarbamate and 63.5% of heavy metal adsorbent.
The heavy metal adsorbent comprises lysimachia and mushroom dregs.
50-65% of lysimachia and 35-50% of mushroom dregs.
The mushroom dregs are oyster mushroom dregs.
A preparation method of a heavy metal ion passivation stabilizer for treating residues by using a flow-back liquid comprises the following specific steps:
step one, preparing a heavy metal adsorbent: treating the lysimachia and the mushroom dregs according to the proportion of the lysimachia and the mushroom dregs, sieving by a 80-mesh sieve, and mixing to obtain a heavy metal adsorbent;
step two, mixing 0.5-1% of sodium sulfide, 20-30% of potassium dihydrogen phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent in the formula weight in sequence, and stirring uniformly;
step three, bagging and sealing the mixture uniformly stirred in the step two to obtain a finished product.
In the first step, the lysimachia is treated by roasting and grinding into powder.
In the step one, the treatment of the mushroom dregs comprises grinding the mushroom dregs, naturally drying in the air, airing in the sun and sterilizing.
The invention has the beneficial effects that:
the formula and the preparation method of the heavy metal ion passivation stabilizer solve the problem of heavy metal ion treatment in the residues of the oil field measure flowback fluid treatment, have the advantages of simple preparation method, convenient use and low production cost, can effectively reduce the activity of heavy metals in the residues of the oil field measure flowback fluid treatment, and solve the problems of heavy metal ion toxicity and pollution caused by waste liquid residues to the environment.
The method can effectively improve the removal rate of the heavy metal ions in the measure flowback liquid residues generated in the oil field process, reduce the proportion of the metal exchangeable state, the carbonate combined state and the iron-manganese combined state of the heavy metal ions, and relieve the influence of the added treating agent in the water treatment process on the subsequent microbial oil removal method process.
Detailed Description
Example 1:
the formula provided by the invention can effectively improve the heavy metal ion stabilizing efficiency of the oil field measure flowback fluid treatment residue, effectively reduce the activity of heavy metals in the measure effluent residue, and solve the problems of heavy metal ion toxicity and pollution caused by the waste liquor residue to the environment.
A heavy metal ion passivation stabilizer for treating residues of flowback liquid comprises the following components in parts by weight: 0.5-1% of sodium sulfide, 20-30% of monopotassium phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent.
Preferably, the heavy metal adsorbent comprises lysimachia and mushroom dregs.
Preferably, the weight of the lysimachia is 50-65%, and the weight of the mushroom dregs is 35-50%.
Preferably, the mushroom dregs are oyster mushroom dregs.
A preparation method of a heavy metal ion passivation stabilizer for treating residues by using a flow-back liquid comprises the following specific steps:
step one, preparing a heavy metal adsorbent: treating the lysimachia and the mushroom dregs according to the proportion of the lysimachia and the mushroom dregs, sieving by a 80-mesh sieve, and mixing to obtain a heavy metal adsorbent;
step two, mixing 0.5-1% of sodium sulfide, 20-30% of potassium dihydrogen phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent in the formula weight in sequence, and stirring uniformly;
step three, bagging and sealing the mixture uniformly stirred in the step two to obtain a finished product.
Preferably, in the first step, the processing of the lysimachia is baking and grinding into powder,
preferably, in the step one, the mushroom dregs are ground and naturally dried in the air, and then are dried in the sun and sterilized.
The formula of the heavy metal ion passivation stabilizer provided by the invention is applied to treating the oil field measure return liquid treatment residues, 5 wt% of the stabilizer provided by the invention is added into the residues to be treated and uniformly mixed, the pH is kept to be 6.5-7.5, the temperature is 15-35 ℃, the water content is 58-62%, and after the residues are stabilized for at least 7 days, the stabilizing efficiency of finally obtained Cu, Zn, Cd, Pb, Cr and Hg is high.
The experimental contaminated soil is prepared by selecting a residue sample from a certain oil transfer station measure in northwest of China after waste liquid treatment. The weight ratio of the heavy metal ion passivation stabilizer to the solid phase of the residue to be treated is 5: and (2) calculating by 100, uniformly stirring in a stirrer, spreading out mixed residues, naturally airing and maintaining, keeping the water content of 60%, sampling after seven days, and performing leaching detection on the residues according to a metal leaching detection method and standard in Standard "hazardous waste identification Standard Leaching toxicity identification" GB5085.3-2007, wherein the detection results are shown in the following tables 1-4, and the units of Cu, Zn, Cd, Pb, Cr and Hg obtained by detection in the tables 1-4 are all g.
The method can effectively reduce the activity of heavy metal in the treatment residues of the oil field measure flowback fluid in the northwest oil field development area, and solves the problems of heavy metal ion toxicity and pollution caused by the waste liquid residues to the environment. The formula of the heavy metal stabilizer can reduce the migration rate of heavy metal ions in the environment and inhibit the toxicity of the heavy metal ions to microorganisms, and when the formula of the heavy metal ion passivation stabilizer provided by the invention is used for treating oil field measure flowback fluid treatment residues, the stabilizing efficiency of Cu, Zn, Cd, Pb, Hg and Ni reaches more than 88% and the stabilizing efficiency of Cr reaches more than 83% after the oil field measure flowback fluid treatment residues are stably treated for 7 days.
Example 2:
based on the embodiment 1, in this embodiment, preferably, the heavy metal ion passivation stabilizer for the flowback liquid treatment residue is composed of the following components in parts by weight: 0.6% of sodium sulfide, 22.4% of monopotassium phosphate, 13.5% of dithiocarbamate and 63.5% of heavy metal adsorbent.
The preparation process of the heavy metal adsorbent in the embodiment is as follows: grinding lysimachia and oyster mushroom dregs into powder, grinding the oyster mushroom dregs, naturally drying in the air, airing in the sun, simply sterilizing, sieving by a 80-mesh sieve, and uniformly stirring according to the weight percentage of 58 wt% of lysimachia and 42 wt% of oyster mushroom dregs. Mixing 0.6% of sodium sulfide, 22.4% of potassium dihydrogen phosphate, 13.5% of dithiocarbamate and 63.5% of heavy metal adsorbent in sequence according to the weight of the formula, and stirring uniformly; bagging and sealing to obtain the finished product. The heavy metal ion passivation stabilizer formula provided by the invention is applied to treating oil field measure flowback fluid treatment residues, 5 wt% of the stabilizer provided by the invention is added and uniformly mixed, the pH is kept at 6.5-7.5, the temperature is 15-35 ℃, the water content is 60%, and after the stabilization for 7 days, the stabilization efficiency of Cu, Zn, Cd, Pb, Cr and Hg is sampled and detected. As shown in the following Table 1, the stabilizing efficiencies of Cu, Zn, Cd, Pb, Cr and Hg are respectively: 99.01%, 96.71%, 91.67%, 99.12%, 83.84%, 88.52%.
TABLE 1
Example 3:
based on example 1, in this embodiment, the heavy metal ion passivation stabilizer for the flowback fluid treatment residue is composed of the following components in parts by weight: 0.5% of sodium sulfide, 25% of monopotassium phosphate, 15% of dithiocarbamate and 59.5% of heavy metal adsorbent.
The preparation process of the heavy metal adsorbent in the embodiment is as follows: grinding lysimachia and oyster mushroom dregs into powder, grinding the oyster mushroom dregs, naturally drying in the air, drying in the sun, simply sterilizing, sieving by a 80-mesh sieve, and uniformly stirring according to the weight percentage of 57 wt% of lysimachia and 43 wt% of oyster mushroom dregs. Sequentially mixing sodium sulfide, potassium dihydrogen phosphate, dithiocarbamate and heavy metal adsorbent according to the formula weight, and uniformly stirring; bagging and sealing to obtain the finished product. The formula of the heavy metal ion passivation stabilizer provided by the invention is applied to treating oil field measure return liquid treatment residues, 5 wt% of the stabilizer provided by the invention is added into the required treatment residues and uniformly mixed, the pH is kept at 7, the temperature is kept at 30 ℃, the water content is kept at 61%, and after the stabilization is carried out for at least 7 days, the stabilization efficiency of Cu, Zn, Cd, Pb, Cr and Hg is sampled and detected. As shown in the following Table 2, the stable efficiencies of Cu, Zn, Cd, Pb, Cr and Hg were obtained as follows: 99.02%, 96.69%, 91.16%, 99.11%, 83.85%, 88.71%.
TABLE 2
Example 4:
based on example 1, in this embodiment, the heavy metal ion passivation stabilizer for the flowback fluid treatment residue is composed of the following components in parts by weight: 1% of sodium sulfide, 20% of monopotassium phosphate, 15% of dithiocarbamate and 63% of heavy metal adsorbent.
The preparation process of the heavy metal adsorbent in the embodiment is as follows: grinding lysimachia and oyster mushroom dregs into powder, grinding the oyster mushroom dregs, naturally drying in the air, drying in the sun, simply sterilizing, sieving by a 80-mesh sieve, and uniformly stirring according to the weight percentage of 50 wt% of lysimachia and 50 wt% of oyster mushroom dregs. Sequentially mixing sodium sulfide, potassium dihydrogen phosphate, dithiocarbamate and heavy metal adsorbent according to the formula weight, and uniformly stirring; bagging and sealing to obtain the finished product. The formula of the heavy metal ion passivation stabilizer provided by the invention is applied to treating the oil field measure return liquid treatment residues, 5 wt% of the stabilizer provided by the invention is added into the residues to be treated, the residues are uniformly mixed, the pH value is kept to be 6.5-7.5, the temperature is kept to be 15-35 ℃, the water content is kept to be 58-62%, and after the residues are stabilized for at least 7 days, the stabilizing efficiency of Cu, Zn, Cd, Pb, Cr and Hg is detected by sampling. As shown in Table 3 below, the stable efficiencies of Cu, Zn, Cd, Pb, Cr, and Hg were obtained as follows: 99.02%, 96.73%, 91.76%, 99.12%, 83.79%, 88.52%.
TABLE 3
Example 5:
based on example 1, in this embodiment, the heavy metal ion passivation stabilizer for the flowback fluid treatment residue is composed of the following components in parts by weight: 1% of sodium sulfide, 30% of monopotassium phosphate, 10% of dithiocarbamate and 59% of heavy metal adsorbent.
The preparation process of the heavy metal adsorbent in the embodiment is as follows: grinding lysimachia and oyster mushroom dregs into powder, grinding the oyster mushroom dregs, naturally drying in the air, drying in the sun, simply sterilizing, sieving by a 80-mesh sieve, and uniformly stirring according to the weight percentage of 65 wt% of lysimachia and 35 wt% of oyster mushroom dregs. Sequentially mixing sodium sulfide, potassium dihydrogen phosphate, dithiocarbamate and heavy metal adsorbent according to the formula weight, and uniformly stirring; bagging and sealing to obtain the finished product. The formula of the heavy metal ion passivation stabilizer provided by the invention is applied to treating the oil field measure return liquid treatment residues, 5 wt% of the stabilizer provided by the invention is added into the residues to be treated, the residues are uniformly mixed, the pH value is kept to be 6.5-7.5, the temperature is kept to be 15-35 ℃, the water content is kept to be 58-62%, and after the residues are stabilized for at least 7 days, the stabilizing efficiency of Cu, Zn, Cd, Pb, Cr and Hg is detected by sampling. As shown in Table 4 below, the respective stabilization efficiencies of Cu, Zn, Cd, Pb, Cr, and Hg were obtained as follows: 99.01%, 96.76%, 92.22%, 99.12%, 83.85%, 88.64%.
TABLE 4
The heavy metal stabilizer can stabilize heavy metal, and the heavy metal stabilization is a common heavy metal restoration technology, and mainly adopts a physical or chemical method to fix toxic heavy metal in soil, so that the form of the heavy metal which is easy to dissolve and migrate in residue is converted into the form which is difficult to dissolve or migrate and stably exists in the residue, thereby reducing the migration rate of heavy metal ions in the environment, reducing the absorption of plants and animals to the heavy metal ions, blocking the approach of the heavy metal ions to a food chain, and reducing the risk of environmental hazard.
The method can effectively improve the removal rate of the heavy metal ions in the measure flowback liquid residues generated in the oil field process, reduce the proportion of the metal exchangeable state, the carbonate combined state and the iron-manganese combined state of the heavy metal ions, and relieve the influence of the added treating agent in the water treatment process on the subsequent microbial oil removal method process.
The above examples are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention, and all designs identical or similar to the present invention are within the scope of the present invention. The reagents and methods thereof which are not described in detail in this embodiment belong to the well-known and commonly used methods in the industry, and are not described herein.
Claims (8)
1. A heavy metal ion passivation stabilizer for flowback liquid treatment residues is characterized in that: the composition comprises the following components in percentage by weight: 0.5-1% of sodium sulfide, 20-30% of monopotassium phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent.
2. The heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 1, wherein: the composition comprises the following components in percentage by weight: 0.6% of sodium sulfide, 22.4% of monopotassium phosphate, 13.5% of dithiocarbamate and 63.5% of heavy metal adsorbent.
3. The heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 1, wherein: the heavy metal adsorbent comprises lysimachia and mushroom dregs.
4. The heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 3, wherein: 50-65% of lysimachia and 35-50% of mushroom dregs.
5. The preparation method of the heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 3, wherein the preparation method comprises the following steps: the mushroom dregs are oyster mushroom dregs.
6. A preparation method of a heavy metal ion passivation stabilizer for treating residues of flowback liquid is characterized by comprising the following steps: the method comprises the following specific steps:
step one, preparing a heavy metal adsorbent: treating the lysimachia and the mushroom dregs according to the proportion of the lysimachia and the mushroom dregs, sieving by a 80-mesh sieve, and mixing to obtain a heavy metal adsorbent;
step two, mixing 0.5-1% of sodium sulfide, 20-30% of potassium dihydrogen phosphate, 10-15% of dithiocarbamate and 55-65% of heavy metal adsorbent in the formula weight in sequence, and stirring uniformly;
step three, bagging and sealing the mixture uniformly stirred in the step two to obtain a finished product.
7. The preparation method of the heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 6, wherein the preparation method comprises the following steps: in the first step, the lysimachia is treated by roasting and grinding into powder.
8. The preparation method of the heavy metal ion passivation stabilizer for the flowback fluid treatment residues as claimed in claim 6, wherein the preparation method comprises the following steps: in the step one, the treatment of the mushroom dregs comprises grinding the mushroom dregs, naturally drying in the air, airing in the sun and sterilizing.
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| CN112266069A (en) * | 2020-09-29 | 2021-01-26 | 西安工程大学 | Heavy metal ion compound stabilizer and preparation method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327858A (en) * | 2014-09-22 | 2015-02-04 | 广西大学 | Soil heavy metal compound stabilizer and method using soil heavy metal compound stabilizer for passivation of soil heavy metals |
| CN106147778A (en) * | 2016-07-04 | 2016-11-23 | 河北省农林科学院农业资源环境研究所 | Passivator, preparation method and applications for repairing heavy metal in soil combined pollution |
| CN108410474A (en) * | 2018-05-10 | 2018-08-17 | 张鑫 | Active soil conditioner of a kind of reduction heavy metal in soil and preparation method thereof |
| CN109320043A (en) * | 2018-11-15 | 2019-02-12 | 天津大学 | A kind of method of microwave coupling stabilizer stably desulphurizing sludge heavy-metal |
| CN111228712A (en) * | 2020-02-13 | 2020-06-05 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Heavy metal stabilizing chelating agent, aqueous solution thereof and preparation methods thereof |
-
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- 2020-12-04 CN CN202011407753.6A patent/CN112479333B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104327858A (en) * | 2014-09-22 | 2015-02-04 | 广西大学 | Soil heavy metal compound stabilizer and method using soil heavy metal compound stabilizer for passivation of soil heavy metals |
| CN106147778A (en) * | 2016-07-04 | 2016-11-23 | 河北省农林科学院农业资源环境研究所 | Passivator, preparation method and applications for repairing heavy metal in soil combined pollution |
| CN108410474A (en) * | 2018-05-10 | 2018-08-17 | 张鑫 | Active soil conditioner of a kind of reduction heavy metal in soil and preparation method thereof |
| CN109320043A (en) * | 2018-11-15 | 2019-02-12 | 天津大学 | A kind of method of microwave coupling stabilizer stably desulphurizing sludge heavy-metal |
| CN111228712A (en) * | 2020-02-13 | 2020-06-05 | 国家电投集团远达环保工程有限公司重庆科技分公司 | Heavy metal stabilizing chelating agent, aqueous solution thereof and preparation methods thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112266069A (en) * | 2020-09-29 | 2021-01-26 | 西安工程大学 | Heavy metal ion compound stabilizer and preparation method thereof |
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