CN106830261B - Heavy metal trapping agent and preparation method thereof - Google Patents
Heavy metal trapping agent and preparation method thereof Download PDFInfo
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- CN106830261B CN106830261B CN201710130978.3A CN201710130978A CN106830261B CN 106830261 B CN106830261 B CN 106830261B CN 201710130978 A CN201710130978 A CN 201710130978A CN 106830261 B CN106830261 B CN 106830261B
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 44
- 239000000701 coagulant Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims abstract description 7
- 230000002378 acidificating effect Effects 0.000 claims description 19
- 239000003381 stabilizer Substances 0.000 claims description 19
- 238000003756 stirring Methods 0.000 claims description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 7
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 7
- 239000001509 sodium citrate Substances 0.000 claims description 7
- NLJMYIDDQXHKNR-UHFFFAOYSA-K sodium citrate Chemical group O.O.[Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O NLJMYIDDQXHKNR-UHFFFAOYSA-K 0.000 claims description 7
- CDMIYIVDILNBIJ-UHFFFAOYSA-N triazinane-4,5,6-trithione Chemical class SC1=NN=NC(S)=C1S CDMIYIVDILNBIJ-UHFFFAOYSA-N 0.000 claims description 5
- HIZCIEIDIFGZSS-UHFFFAOYSA-L trithiocarbonate Chemical class [S-]C([S-])=S HIZCIEIDIFGZSS-UHFFFAOYSA-L 0.000 claims description 5
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 claims description 4
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(3+);trinitrate Chemical compound [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 claims description 4
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 claims description 4
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical group [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 claims description 3
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- BNGXYYYYKUGPPF-UHFFFAOYSA-M (3-methylphenyl)methyl-triphenylphosphanium;chloride Chemical compound [Cl-].CC1=CC=CC(C[P+](C=2C=CC=CC=2)(C=2C=CC=CC=2)C=2C=CC=CC=2)=C1 BNGXYYYYKUGPPF-UHFFFAOYSA-M 0.000 claims description 2
- AEQDJSLRWYMAQI-UHFFFAOYSA-N 2,3,9,10-tetramethoxy-6,8,13,13a-tetrahydro-5H-isoquinolino[2,1-b]isoquinoline Chemical compound C1CN2CC(C(=C(OC)C=C3)OC)=C3CC2C2=C1C=C(OC)C(OC)=C2 AEQDJSLRWYMAQI-UHFFFAOYSA-N 0.000 claims description 2
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- HLCFGWHYROZGBI-JJKGCWMISA-M Potassium gluconate Chemical compound [K+].OC[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O HLCFGWHYROZGBI-JJKGCWMISA-M 0.000 claims description 2
- QLBHNVFOQLIYTH-UHFFFAOYSA-L dipotassium;2-[2-[bis(carboxymethyl)amino]ethyl-(carboxylatomethyl)amino]acetate Chemical compound [K+].[K+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O QLBHNVFOQLIYTH-UHFFFAOYSA-L 0.000 claims description 2
- WPUMTJGUQUYPIV-JIZZDEOASA-L disodium (S)-malate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)CC([O-])=O WPUMTJGUQUYPIV-JIZZDEOASA-L 0.000 claims description 2
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 2
- 235000011056 potassium acetate Nutrition 0.000 claims description 2
- GRLPQNLYRHEGIJ-UHFFFAOYSA-J potassium aluminium sulfate Chemical compound [Al+3].[K+].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O GRLPQNLYRHEGIJ-UHFFFAOYSA-J 0.000 claims description 2
- 239000001508 potassium citrate Substances 0.000 claims description 2
- 229960002635 potassium citrate Drugs 0.000 claims description 2
- QEEAPRPFLLJWCF-UHFFFAOYSA-K potassium citrate (anhydrous) Chemical compound [K+].[K+].[K+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O QEEAPRPFLLJWCF-UHFFFAOYSA-K 0.000 claims description 2
- 235000011082 potassium citrates Nutrition 0.000 claims description 2
- 239000004224 potassium gluconate Substances 0.000 claims description 2
- 235000013926 potassium gluconate Nutrition 0.000 claims description 2
- 229960003189 potassium gluconate Drugs 0.000 claims description 2
- 235000019265 sodium DL-malate Nutrition 0.000 claims description 2
- 235000011083 sodium citrates Nutrition 0.000 claims description 2
- 239000000176 sodium gluconate Substances 0.000 claims description 2
- 235000012207 sodium gluconate Nutrition 0.000 claims description 2
- 229940005574 sodium gluconate Drugs 0.000 claims description 2
- 239000001394 sodium malate Substances 0.000 claims description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical compound [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims description 2
- 229910052979 sodium sulfide Inorganic materials 0.000 claims description 2
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical group [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 claims description 2
- ZGTMUACCHSMWAC-UHFFFAOYSA-L EDTA disodium salt (anhydrous) Chemical compound [Na+].[Na+].OC(=O)CN(CC([O-])=O)CCN(CC(O)=O)CC([O-])=O ZGTMUACCHSMWAC-UHFFFAOYSA-L 0.000 claims 1
- 229940103272 aluminum potassium sulfate Drugs 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 26
- 150000002500 ions Chemical class 0.000 abstract description 6
- 238000009713 electroplating Methods 0.000 abstract description 5
- 239000002244 precipitate Substances 0.000 abstract description 4
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 2
- 229920001131 Pulp (paper) Polymers 0.000 abstract 1
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000010779 crude oil Substances 0.000 abstract 1
- 238000010828 elution Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 12
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000007864 aqueous solution Substances 0.000 description 12
- 229910001431 copper ion Inorganic materials 0.000 description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000002131 composite material Substances 0.000 description 7
- 230000001376 precipitating effect Effects 0.000 description 6
- 238000006243 chemical reaction Methods 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- 238000001556 precipitation Methods 0.000 description 4
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 2
- 239000002738 chelating agent Substances 0.000 description 2
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical group N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 description 2
- 150000004659 dithiocarbamates Chemical class 0.000 description 2
- 229960001484 edetic acid Drugs 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001453 nickel ion Inorganic materials 0.000 description 2
- 239000012989 trithiocarbonate Substances 0.000 description 2
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- DKVNPHBNOWQYFE-UHFFFAOYSA-N carbamodithioic acid Chemical compound NC(S)=S DKVNPHBNOWQYFE-UHFFFAOYSA-N 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000012990 dithiocarbamate Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004073 vulcanization Methods 0.000 description 1
- 238000004065 wastewater treatment Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/58—Treatment of water, waste water, or sewage by removing specified dissolved compounds
- C02F1/62—Heavy metal compounds
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
- Removal Of Specific Substances (AREA)
Abstract
The invention discloses a heavy metal trapping agent and a preparation method thereof. After the traditional heavy metal trapping agent is added into the industrial wastewater containing heavy metals, another set of equipment is needed for adding a coagulant, and the process is complicated. The trapping agent prepared by the invention can be completed only by one set of dosing equipment, so that the investment of equipment and field is saved, the cost is reduced, and the treatment time is shortened. The trapping agent prepared by the invention can rapidly react with various heavy metal ions and complex heavy metal ions in wastewater at normal temperature, fully precipitate within 3 minutes, and effectively realize solid-liquid separation after a coagulant is added. The raw materials required by the invention belong to common chemical raw materials, the cost is low, the preparation process is simple, and the method can be widely applied to the treatment of wastewater containing heavy metals, such as electroplating wastewater, circuit board wastewater, crude oil elution wastewater, smelting wastewater, paper pulp wastewater and the like.
Description
Technical Field
The invention relates to a heavy metal trapping agent for removing heavy metal ions in industrial wastewater and a preparation method thereof, belonging to the technical field of heavy metal removal in wastewater in the environmental protection industry.
Background
With the rapid development of the industry in China, the environmental pollution is increasingly severe, and the water quality pollution event caused by the industrial wastewater containing heavy metals is endless in recent years, which poses serious threats to the lives of people. On the other hand, the national environment is more and more focused on the environmental problems, and the discharge standard of the discharged pollutants is more and more strict, so that the effective and low-cost method for treating the heavy metal wastewater is urgently found in consideration of the life safety of people and the emission standard of enterprises.
Because the heavy metals are different in types and exist in water, especially some chelating agents, such as EDTA (ethylene diamine tetraacetic acid), citric acid, ammonia, cyanide and the like, exist in water and form complexes with the heavy metals, the chelating agents exist in the solution more stably, and the heavy metal wastewater is difficult to treat and reach the standard by adopting the traditional methods, such as neutralization and precipitation, a vulcanization method, ion exchange and the like.
The novel alkaline heavy metal trapping agent, such as Dithiocarbamate (DTC) compounds, trimercaptotriazine (TMT) compounds or trithiocarbonate (TTC) compounds and the like can react with heavy metal ions and partial complexes thereof rapidly to form precipitates, so as to achieve the purpose of separating heavy metals from wastewater. However, these alkaline heavy metal collectors have a good precipitation effect only by adding a coagulant into a coagulation tank after adding the heavy metal collectors into water. Most of the common commercial coagulants are highly acidic, and if the alkaline heavy metal collector and the acidic coagulant are put into water at the same time, the two compounds are subjected to chemical reaction, so that the two products are simultaneously ineffective.
Disclosure of Invention
Aiming at the innovative improvement of adding the heavy metal trapping agent and the coagulant by the two-step method, the invention provides a composite heavy metal trapping agent material which comprises an alkaline heavy metal trapping agent, an acidic coagulant and a stabilizer, wherein the alkaline heavy metal trapping agent plays a role in trapping and precipitating heavy metal ions, the coagulant promotes the growth of precipitates, and the stabilizer prevents the heavy metal trapping agent and the coagulant from losing efficacy due to reaction in water.
The composite heavy metal trapping agent material consists of an alkaline heavy metal trapping agent, an acidic coagulant and a stabilizer, wherein the alkaline heavy metal trapping agent plays a role in trapping and precipitating heavy metal ions, the coagulant promotes the growth of precipitates, and the stabilizer prevents the heavy metal trapping agent and the coagulant from losing efficacy due to reaction in water.
The alkaline heavy metal trapping agent can be any one of sodium sulfide, sodium polysulfide, Dithioformate (DTC) compounds, trimercapto triazine salt (TMT) compounds or trithiocarbonate (TTC) compounds, and the content of the alkaline heavy metal trapping agent is 60-80%.
The acidic coagulant can be any one of aluminum sulfate, aluminum nitrate, aluminum chloride, polyaluminum sulfate, polyaluminum chloride, ferric sulfate, ferric nitrate, ferric chloride, polyferric sulfate, polyferric chloride, composite polyaluminum ferric aluminum sulfate or potassium aluminum sulfate, and the content of the acidic coagulant is 5-10%.
The stabilizer can be any one of sodium citrate, potassium citrate, sodium malate, sodium acetate, potassium acetate, disodium ethylenediamine tetraacetate, dipotassium ethylenediamine tetraacetate, sodium gluconate or potassium gluconate, and the content of the stabilizer is 15-30%.
Has the advantages that: according to the invention, a stabilizer is added into the alkaline heavy metal trapping agent and the acidic coagulant to prepare the composite heavy metal trapping agent, so that the agent is prevented from losing efficacy when being put into water. The composite heavy metal trapping agent disclosed by the invention can reduce equipment investment, reduce the wastewater treatment time and improve the overall treatment capacity.
The invention relates to a preparation method of a composite heavy metal trapping agent material, which is characterized by comprising the following preparation processes and steps:
adding 60-80% of alkaline heavy metal trapping agent and 15-30% of stabilizing agent into a solid stirrer, stirring for 10 minutes, adding an acidic coagulant, and stirring until the mixture is fully mixed to obtain the white composite heavy metal trapping agent.
Detailed Description
The following examples are presented to enable those skilled in the art to more fully understand the present invention and are not intended to limit the invention in any way.
Example 1
Some electroplating enterprises in Zhejiang province measure 500ml of wastewater, measure the concentration of copper ions to be 20.55mg/L and the pH to be 4.3, and add 10% NaOH solution until the pH is 7.5. The alkaline heavy metal trapping agent is commercially available RS100, the acidic coagulant is polyaluminium chloride, the stabilizer is sodium citrate, 5% of aqueous solution is prepared according to the weight ratio of 87% to 6% to 7%, 2.5mL of the aqueous solution is added into the heavy metal wastewater, the stirring speed is 30 r/min, after 3 minutes of reaction, the precipitation is complete, the concentration of copper ions is measured to be 0.21mg/L, and the national discharge standard is reached.
Example 2
Some electroplating enterprises in Zhejiang province measure 500ml of wastewater, measure the concentration of copper ions to be 20.55mg/L and the pH to be 4.3, and add 10% NaOH solution until the pH is 7.5. The alkaline heavy metal trapping agent is commercially available TMT-15, the acidic coagulant is polyaluminium chloride, the stabilizer is sodium citrate, the alkaline heavy metal trapping agent is prepared into an aqueous solution with the content of 5% according to the weight ratio of 90% to 5%, 3.0mL of the aqueous solution is added into the heavy metal wastewater, the stirring speed is 30 r/min, after 10 minutes of reaction, the precipitation is complete, the concentration of copper ions is measured to be 0.24mg/L, and the national discharge standard is reached.
Example 3
In a certain electroplating enterprise in Suzhou, 500ml of wastewater is measured, the concentration of copper ions is measured to be 6.38mg/L, the wastewater is copper ammonia complex wastewater, and the pH value is 9. Selecting a basic heavy metal trapping agent as commercially available RS100, an acidic coagulant as polyferric sulfate and a stabilizer as sodium citrate, preparing a 5% aqueous solution according to the weight ratio of 84% to 10% to 6%, adding 1.2mL of the aqueous solution into heavy metal wastewater, stirring at the rate of 30 r/min, reacting for 3 minutes, completely precipitating, and measuring the concentration of copper ions to be 0.18mg/L, so that the copper ions reach the national discharge standard.
Example 4
Shenzhen certain circuit board enterprise, volume get waste water 500ml, survey the copper ion concentration and be 10.42mg/L, for copper ammonia complex waste water, pH is 9. Selecting a basic heavy metal trapping agent as commercially available RS100, an acidic coagulant as polyferric sulfate and a stabilizer as sodium citrate, preparing a 5% aqueous solution according to the weight ratio of 84% to 10% to 6%, adding 1.6mL of the aqueous solution into heavy metal wastewater, stirring at the rate of 30 r/min, reacting for 3 minutes, completely precipitating, and measuring the concentration of copper ions to be 0.23mg/L, so that the copper ions reach the national discharge standard.
Example 5
In a circuit board enterprise in Hunan, 500ml of wastewater is measured, the concentration of copper ions is measured to be 30.65mg/L, the pH value is measured to be 3.5, and 10% NaOH solution is added until the pH value is 7.5. Selecting an alkaline heavy metal trapping agent as a commercial RS100, an acidic coagulant as polyaluminium chloride, a stabilizer as sodium acetate, preparing into a 5% aqueous solution according to the weight ratio of 83% to 8% to 9%, adding 4.0mL of the aqueous solution into heavy metal wastewater, stirring at the rate of 30 r/min, reacting for 3 minutes, completely precipitating, and measuring the concentration of copper ions to be 0.36mg/L, thereby achieving the national discharge standard.
Example 6
Shenzhen certain electroplating enterprises measure 500ml of wastewater, measure that the concentration of nickel ions is 15.9mg/L, the pH value is 5.2, and add 10% NaOH solution until the pH value is 7.5. Selecting a basic heavy metal trapping agent as commercially available RS100, an acidic coagulant as polyferric sulfate and a stabilizer as sodium citrate, preparing a 5% aqueous solution according to the weight ratio of 84% to 10% to 6%, adding 2.6mL of the aqueous solution into heavy metal wastewater, stirring at the rate of 30 r/min, reacting for 3 minutes, completely precipitating, and measuring the concentration of nickel ions to be 0.06mg/L, so that the national discharge standard is met.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (3)
1. A heavy metal trapping agent, characterized by: the heavy metal trapping agent consists of an alkaline heavy metal trapping agent, an acidic coagulant and a stabilizer,
wherein the acidic coagulant is aluminum sulfate, aluminum nitrate, aluminum chloride, polyaluminum sulfate, polyaluminum chloride, ferric sulfate, ferric nitrate, ferric chloride, polyferric sulfate, polyferric chloride, compound polyaluminum ferric sulfate or aluminum potassium sulfate, and the content of the acidic coagulant is 5-10 wt.%;
wherein the stabilizer is sodium citrate, potassium citrate, sodium malate, sodium acetate, potassium acetate, disodium ethylenediaminetetraacetate, dipotassium ethylenediaminetetraacetate, sodium gluconate or potassium gluconate, and the content of the stabilizer is 5-9 wt.%;
the heavy metal trapping agent is prepared by the following preparation method: adding 83-90 wt.% of alkaline heavy metal trapping agent into a solid stirrer, adding 5-9 wt.% of stabilizer, stirring for 10 minutes, adding 5-10 wt.% of acidic coagulant, and stirring to fully mix to obtain the white heavy metal trapping agent.
2. Heavy metal trap agent according to claim 1, characterized in that: the alkaline heavy metal trapping agent is sodium sulfide, sodium polysulfide, dithioformate compounds, trimercaptotriazine compounds or trithiocarbonate compounds, and the content of the alkaline heavy metal trapping agent is 83-90 wt.%.
3. The method for preparing the heavy metal trapping agent according to any one of claims 1 to 2, characterized by comprising the following steps: adding 83-90 wt.% of alkaline heavy metal trapping agent into a solid stirrer, adding 5-9 wt.% of stabilizer, stirring for 10 minutes, adding 5-10 wt.% of acidic coagulant, and stirring to fully mix to obtain the white heavy metal trapping agent.
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| CN107446587B (en) * | 2017-07-24 | 2021-01-08 | 湖南新九方科技有限公司 | Preparation method and application of heavy metal contaminated soil/bottom mud stabilizer |
| CN107459172B (en) * | 2017-09-11 | 2020-02-04 | 厦门科霖达环保科技有限公司 | Treatment process of plasma polishing electrolysis waste liquid |
| CN107585986A (en) * | 2017-10-30 | 2018-01-16 | 江苏和合环保集团有限公司 | A kind of heavy metal stabilizer and its application method |
| CN109574178B (en) * | 2018-11-29 | 2022-01-04 | 宁波君笙环保科技有限公司 | Preparation method of electroplating heavy metal chelating agent |
| CN110040833B (en) * | 2019-04-23 | 2021-09-03 | 襄阳先创环保科技有限公司 | Preparation method of heavy metal ion trapping agent for electroplating wastewater |
| CN112678935A (en) * | 2019-10-18 | 2021-04-20 | 中国石油化工股份有限公司 | Heavy metal wastewater treating agent and application thereof |
| CN111235619B (en) * | 2020-01-15 | 2022-05-31 | 东莞市四辉表面处理科技有限公司 | High-efficiency nickel removal cleaning powder after aluminum anode sealing and preparation method thereof |
| CN111359136A (en) * | 2020-04-03 | 2020-07-03 | 连云港新江环保材料有限公司 | Dioxin detoxification chelating agent for fly ash and preparation method thereof |
| WO2022193294A1 (en) * | 2021-03-19 | 2022-09-22 | Kemira Oyj | A method for removing metal ions from effluents and process waters |
| CN115010231B (en) * | 2022-07-07 | 2023-12-29 | 江苏富淼科技股份有限公司 | Stabilizer of polyiron coagulant and application thereof |
| CN115651663B (en) * | 2022-10-10 | 2024-04-12 | 昆明理工大学 | Heavy metal contaminated soil remediation agent and preparation method and application thereof |
| CN115382483A (en) * | 2022-10-28 | 2022-11-25 | 苏州湛清环保科技有限公司 | Chemical nickel plating waste liquid curing method, curing agent used in method and preparation method of curing agent |
| CN118373502A (en) * | 2023-12-17 | 2024-07-23 | 深圳市宏屹峰科技有限公司 | A method for preparing a high-efficiency heavy metal chelating agent for copper-containing wastewater from circuit boards |
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| CN103663659A (en) * | 2013-12-26 | 2014-03-26 | 山东华升化工科技有限公司 | Composite flocculant and preparation method thereof |
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