CN106830261A - A kind of heavy metal chelating agent and preparation method thereof - Google Patents
A kind of heavy metal chelating agent and preparation method thereof Download PDFInfo
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- CN106830261A CN106830261A CN201710130978.3A CN201710130978A CN106830261A CN 106830261 A CN106830261 A CN 106830261A CN 201710130978 A CN201710130978 A CN 201710130978A CN 106830261 A CN106830261 A CN 106830261A
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- Prior art keywords
- heavy metal
- coagulant
- chelating agent
- sodium
- wastewater
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- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 55
- 239000002738 chelating agent Substances 0.000 title claims abstract description 15
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 27
- 239000000701 coagulant Substances 0.000 claims abstract description 26
- 239000003381 stabilizer Substances 0.000 claims abstract description 15
- 150000001875 compounds Chemical class 0.000 claims description 18
- 230000002378 acidificating effect Effects 0.000 claims description 13
- 238000001556 precipitation Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- -1 dithio formate Chemical compound 0.000 claims description 6
- 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 6
- 229910000360 iron(III) sulfate Inorganic materials 0.000 claims description 6
- 150000002500 ions Chemical class 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 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
- 239000000463 material Substances 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
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- HIZCIEIDIFGZSS-UHFFFAOYSA-L trithiocarbonate Chemical compound [S-]C([S-])=S HIZCIEIDIFGZSS-UHFFFAOYSA-L 0.000 claims description 3
- 239000012989 trithiocarbonate Substances 0.000 claims description 3
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical class C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 2
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 2
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 2
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [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 2
- 229940103272 aluminum potassium sulfate Drugs 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
- FBAFATDZDUQKNH-UHFFFAOYSA-M iron chloride Chemical compound [Cl-].[Fe] FBAFATDZDUQKNH-UHFFFAOYSA-M 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
- 229910052708 sodium Inorganic materials 0.000 claims description 2
- 239000011734 sodium Substances 0.000 claims description 2
- WPUMTJGUQUYPIV-UHFFFAOYSA-L sodium malate Chemical compound [Na+].[Na+].[O-]C(=O)C(O)CC([O-])=O WPUMTJGUQUYPIV-UHFFFAOYSA-L 0.000 claims description 2
- HYHCSLBZRBJJCH-UHFFFAOYSA-N sodium polysulfide Chemical class [Na+].S HYHCSLBZRBJJCH-UHFFFAOYSA-N 0.000 claims description 2
- HRXKRNGNAMMEHJ-UHFFFAOYSA-K trisodium citrate Chemical group [Na+].[Na+].[Na+].[O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O HRXKRNGNAMMEHJ-UHFFFAOYSA-K 0.000 claims description 2
- 239000002131 composite material Substances 0.000 claims 2
- 244000131522 Citrus pyriformis Species 0.000 claims 1
- 239000003109 Disodium ethylene diamine tetraacetate Substances 0.000 claims 1
- 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
- 235000009754 Vitis X bourquina Nutrition 0.000 claims 1
- 235000012333 Vitis X labruscana Nutrition 0.000 claims 1
- 240000006365 Vitis vinifera Species 0.000 claims 1
- 235000014787 Vitis vinifera Nutrition 0.000 claims 1
- 239000002253 acid Substances 0.000 claims 1
- 235000019301 disodium ethylene diamine tetraacetate Nutrition 0.000 claims 1
- IDAGXRIGDWCIET-SDFKWCIISA-L disodium;(2s,3s,4s,5r)-2,3,4,5-tetrahydroxyhexanedioate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](O)[C@@H](O)[C@H](O)[C@@H](O)C([O-])=O IDAGXRIGDWCIET-SDFKWCIISA-L 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 claims 1
- 239000002184 metal Substances 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- XAEFZNCEHLXOMS-UHFFFAOYSA-M potassium benzoate Chemical compound [K+].[O-]C(=O)C1=CC=CC=C1 XAEFZNCEHLXOMS-UHFFFAOYSA-M 0.000 claims 1
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims 1
- 239000002351 wastewater Substances 0.000 abstract description 23
- 238000009713 electroplating Methods 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 5
- 238000010668 complexation reaction Methods 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 3
- 239000003814 drug Substances 0.000 abstract description 2
- 239000007787 solid Substances 0.000 abstract description 2
- 238000004065 wastewater treatment Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 abstract 1
- 239000013064 chemical raw material Substances 0.000 abstract 1
- 238000006243 chemical reaction Methods 0.000 abstract 1
- 239000010779 crude oil Substances 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 12
- 239000000243 solution Substances 0.000 description 11
- JPVYNHNXODAKFH-UHFFFAOYSA-N Cu2+ Chemical compound [Cu+2] JPVYNHNXODAKFH-UHFFFAOYSA-N 0.000 description 10
- 229910001431 copper ion Inorganic materials 0.000 description 10
- 238000003756 stirring Methods 0.000 description 8
- 239000007864 aqueous solution Substances 0.000 description 6
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 4
- 239000001509 sodium citrate Substances 0.000 description 4
- 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 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
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- QKSIFUGZHOUETI-UHFFFAOYSA-N copper;azane Chemical compound N.N.N.N.[Cu+2] QKSIFUGZHOUETI-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 229910001453 nickel ion Inorganic materials 0.000 description 2
- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 description 2
- 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 description 1
- 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 description 1
- OQUFOZNPBIIJTN-UHFFFAOYSA-N 2-hydroxypropane-1,2,3-tricarboxylic acid;sodium Chemical group [Na].OC(=O)CC(O)(C(O)=O)CC(O)=O OQUFOZNPBIIJTN-UHFFFAOYSA-N 0.000 description 1
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 229960001484 edetic acid Drugs 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
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000001103 potassium chloride Substances 0.000 description 1
- 235000011164 potassium chloride Nutrition 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000000176 sodium gluconate Substances 0.000 description 1
- 235000012207 sodium gluconate Nutrition 0.000 description 1
- 229940005574 sodium gluconate Drugs 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000004073 vulcanization 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 kind of heavy metal chelating agent and preparation method, formed by the way that alkaline heavy metal trapping agent, coagulant and stabilizer are mixed with by certain proportioning.After traditional heavy metal chelating agent adds the industrial wastewater containing heavy metal, in addition it is also necessary to which other set equipment adds coagulant, technics comparing is cumbersome.Trapping agent prepared by the present invention only needs to a set of medicine machine can then be completed, and save the input in equipment and place, cost be reduced, while reducing process time.The trapping agent prepared by the present invention can fully be precipitated with the various heavy metal ion in waste water and complexation heavy metal ion fast reaction in equal 3 minutes at normal temperatures, after coagulant is added, can effectively realize separation of solid and liquid.Raw material needed for of the invention belongs to general chemical raw material, and with low cost, preparation process is simple can be widely used in the wastewater treatments containing heavy metal such as electroplating wastewater, board wastewater, crude oil wash-out waste water, smelting wastewater and paper making pulp waste water.
Description
Technical field
The present invention relates to a kind of heavy metal chelating agent for removing heavy metals in industrial wastewater ion and preparation method thereof,
Belong to environmental protection industry (epi) heavy metal in waste water removal technology field.
Background technology
With China's industry quickly development, environmental pollution is increasingly serious, because of the industrial wastewater pollution water quality containing heavy metal
Event is emerged in an endless stream in recent years, and serious threat is caused to people's life.On the other hand country is also more next for environmental problem
More pay attention to, the pollutant emission standard of appearance is also increasingly stricter, thus no matter for people's living safety consideration or from
From the point of view of enterprise's emission compliance, a kind of method of effective, low cost treatment heavy metal wastewater thereby is found extremely urgent.
There are some chelating agents because heavy metal species is different, and in the form present in water, particularly water, such as
EDTA（Ethylenediamine tetra-acetic acid）, citric acid, ammonia, cyanogen root etc. form complex with heavy metal, more stable existence, leads in the solution
Heavy metal wastewater thereby is caused to use conventional methods, such as neutralization precipitation, vulcanization method, ion exchange, it is difficult to process up to standard.
New alkaline heavy metal trapping agent, such as dithio formate（DTC）Class compound, tri-thiol triazine salt（TMT）
Class compound or trithiocarbonate（TTC）Class compound etc. can be rapid anti-with heavy metal ion and its moiety complex
Sediment should be formed, to reach the purpose that heavy metal is separated from waste water.But these alkaline heavy metal chelating agents are being thrown
After entering in water, in addition it is also necessary to which putting into coagulant in coagulating basin just has preferable sedimentation effect.Generally commercially available coagulant is most absolutely
Number is in stronger acidity, if during the coagulant of alkaline heavy metal trapping agent and acidity is while put into water, can cause two kinds
Compound chemically reacts so that two kinds of products fail simultaneously.
The content of the invention
The present invention adds heavy metal chelating agent and coagulant and has carried out the improvement of novelty for above-mentioned two-step method, it is proposed that
A kind of Compound Heavy Metals trap agent material, and it is made up of alkaline heavy metal trapping agent, acidic coagulant and stabilizer, its neutral and alkali
Heavy metal chelating agent heavy metal ion plays trapping and precipitation, and coagulant promotes growing up for precipitation, and stabilizer prevents a huge sum of money
Category trapping agent and coagulant fail in water because reacting.
Compound Heavy Metals trapping agent material is made up of alkaline heavy metal trapping agent, acidic coagulant and stabilizer, alkalescence
Heavy metal chelating agent heavy metal ion plays trapping and precipitation, and coagulant promotes growing up for precipitation, and stabilizer prevents a huge sum of money
Category trapping agent and coagulant fail in water because reacting.
Described alkaline heavy metal trapping agent can be vulcanized sodium, sodium polysulfide, dithio formate（DTC）Class chemical combination
Thing, tri-thiol triazine salt（TMT）Class compound or trithiocarbonate（TTC）Any one in class compound, its content
It is 60-80%.
Described acidic coagulant can be aluminum sulfate, aluminum nitrate, aluminium chloride, polyaluminium sulfate, polyaluminium chloride, sulfuric acid
It is any in iron, ferric nitrate, iron chloride, bodied ferric sulfate, poly-ferric chloride, compound PAFS or aluminum potassium sulfate
One kind, its content is 5-10%.
Described stabilizer can be sodium citrate salt, citric acid sylvite, malic acid sodium salt, sodium acetate, potassium acetate, second
Any one in edetate disodium salt, EDTA Dipotassium salt, sodium gluconate or K-IAO, it contains
It is 15-30% to measure.
Beneficial effect：The present invention is made by adding a kind of stabilizer in alkaline heavy metal trapping agent and acidic coagulant
For a kind of compound heavy metal chelating agent is gone out, prevent the medicament when putting into water from failing.Compound heavy metals trapping of the invention
Agent can reduce equipment investment, reduce the wastewater treatment time, improve entirety ability.
The present invention relates to a kind of preparation method of compound heavy metals trapping agent material, it is characterized in that with following preparation
Process and step：
Added in solid mixer, the alkaline heavy metal trapping agent of 60-80%, add the stabilizer of 15-30%, stir 10 points
Zhong Hou, adds acidic coagulant, stirs to being sufficiently mixed, and obtains white compound heavy metal chelating agent.
Specific embodiment
The following examples can make those skilled in the art that the present invention is more completely understood, but limit never in any form
The present invention.
Embodiment 1
Zhejiang electroplating enterprise, measures waste water 500ml, measures copper ion concentration for 20.55mg/L, and pH is 4.3, adds 10%
NaOH solution is to pH to 7.5.Alkaline heavy metal trapping agent is commercially available RS100, and acidic coagulant is aluminium polychloride, and stabilizer is
Sodium citrate, 87% is compared according to weight:6%:7% is configured to the aqueous solution that content is 5%, adds the 2.5mL solution useless to heavy metal
In water, stir speed (S.S.) is 30 revs/min, and after reacting 3 minutes, precipitation is complete, measures copper ion concentration for 0.21mg/L, reaches country
Discharge standard.
Embodiment 2
Zhejiang electroplating enterprise, measures waste water 500ml, measures copper ion concentration for 20.55mg/L, and pH is 4.3, adds 10%
NaOH solution is to pH to 7.5.Alkaline heavy metal trapping agent is commercially available TMT-15, and acidic coagulant is aluminium polychloride, stabilizer
It is sodium citrate, 90% is compared according to weight:5%:5% is configured to the aqueous solution that content is 5%, adds 3.0mL solution to heavy metal
In waste water, stir speed (S.S.) is 30 revs/min, and after reacting 10 minutes, precipitation is complete, measures copper ion concentration for 0.24mg/L, is reached
Discharging standards.
Embodiment 3
Suzhou electroplating enterprise, measures waste water 500ml, measures copper ion concentration for 6.38mg/L, is copper ammonia complexation waste water, and pH is
9.It is commercially available RS100 to choose alkaline heavy metal trapping agent, and acidic coagulant is bodied ferric sulfate, and stabilizer is sodium citrate, is pressed
Compare 84% according to weight:10%:6% is configured to the aqueous solution that content is 5%, adds in the 1.2mL solution to heavy metal wastewater thereby, and stirring is fast
Rate is 30 revs/min, and after reacting 3 minutes, precipitation is complete, measures copper ion concentration for 0.18mg/L, reaches discharging standards.
Embodiment 4
Shenzhen wiring board enterprise, measures waste water 500ml, measures copper ion concentration for 10.42mg/L, is copper ammonia complexation waste water,
PH is 9.It is commercially available RS100 to choose alkaline heavy metal trapping agent, and acidic coagulant is bodied ferric sulfate, and stabilizer is citric acid
Sodium, 84% is compared according to weight:10%:6% is configured to the aqueous solution that content is 5%, in the addition 1.6mL solution to heavy metal wastewater thereby,
Stir speed (S.S.) is 30 revs/min, and after reacting 3 minutes, precipitation is complete, measures copper ion concentration for 0.23mg/L, reaches national discharge
Standard.
Embodiment 5
Hunan wiring board enterprise, measures waste water 500ml, measures copper ion concentration for 30.65mg/L, and pH is 3.5, adds 10%
NaOH solution to pH to 7.5.It is commercially available RS100 to choose alkaline heavy metal trapping agent, and acidic coagulant is aluminium polychloride, surely
Agent is determined for sodium acetate, and 83% is compared according to weight:8%:9% is configured to the aqueous solution that content is 5%, adds 4.0mL solution a to huge sum of money
In category waste water, stir speed (S.S.) is 30 revs/min, and after reacting 3 minutes, precipitation is complete, measures copper ion concentration for 0.36mg/L, is reached
Discharging standards.
Embodiment 6
Shenzhen electroplating enterprise, measures waste water 500ml, measures nickel ion concentration for 15.9mg/L, and pH is 5.2, adds 10%
NaOH solution is to pH to 7.5.It is commercially available RS100 to choose alkaline heavy metal trapping agent, and acidic coagulant is bodied ferric sulfate, stabilization
Agent is sodium citrate, and 84% is compared according to weight:10%:6% is configured to the aqueous solution that content is 5%, adds 2.6mL solution a to huge sum of money
In category waste water, stir speed (S.S.) is 30 revs/min, and after reacting 3 minutes, precipitation is complete, measures nickel ion concentration for 0.06mg/L, is reached
Discharging standards.
The above, the only present invention preferably specific embodiment, but protection scope of the present invention is not limited thereto,
Any one skilled in the art the invention discloses technical scope in, the change or replacement that can be readily occurred in,
Should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be with scope of the claims
It is defined.
Claims (4)
1. a kind of heavy metal chelating agent and preparation method thereof, it is characterised in that：The Compound Heavy Metals trap agent material by alkalescence weight
Metal traps, acidic coagulant and stabilizer composition, alkaline heavy metal trapping agent heavy metal ion plays trapping and precipitation is made
With coagulant promotes growing up for precipitation, and stabilizer prevents heavy metal chelating agent and coagulant from being failed because reacting in water.
2. compound heavy metal chelating agent according to claim 1, it is characterised in that：Described alkaline heavy metal trapping agent
Can be vulcanized sodium, sodium polysulfide, dithio formate（DTC）Class compound, tri-thiol triazine salt（TMT）Class compound or
Trithiocarbonate（TTC）Any one in class compound, its content is 60-80%.
3. composite according to claim 1, it is characterised in that：Described acidic coagulant can be aluminum sulfate, nitre
It is sour aluminium, aluminium chloride, polyaluminium sulfate, polyaluminium chloride, ferric sulfate, ferric nitrate, iron chloride, bodied ferric sulfate, poly-ferric chloride, multiple
Any one in mould assembly PAFS or aluminum potassium sulfate, its content is 5-10%.
4. composite according to claim 1, it is characterised in that：Described stabilizer can be sodium citrate salt, lemon
Lemon acid potassium salt, malic acid sodium salt, sodium acetate, potassium acetate, disodium EDTA, EDTA Dipotassium salt, grape
Any one in sodium saccharate or K-IAO, its content is 15-30%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130978.3A CN106830261B (en) | 2017-03-07 | 2017-03-07 | Heavy metal trapping agent and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710130978.3A CN106830261B (en) | 2017-03-07 | 2017-03-07 | Heavy metal trapping agent and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN106830261A true CN106830261A (en) | 2017-06-13 |
| CN106830261B CN106830261B (en) | 2020-05-12 |
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| CN107459172A (en) * | 2017-09-11 | 2017-12-12 | 厦门科霖达环保科技有限公司 | A kind of handling process of plasma polishing electrolysis waste solution |
| 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 |
| CN109574178A (en) * | 2018-11-29 | 2019-04-05 | 宁波君笙环保科技有限公司 | A kind of preparation method of electroplated heavy metals chelating agent |
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| 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 |
| CN115010231A (en) * | 2022-07-07 | 2022-09-06 | 江苏富淼科技股份有限公司 | Stabilizer of polyferric coagulant and application thereof |
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| CN115651663A (en) * | 2022-10-10 | 2023-01-31 | 昆明理工大学 | Heavy metal contaminated soil remediation agent and preparation method 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 |
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