CN113087037A - Cyanogen removing agent and preparation method thereof - Google Patents
Cyanogen removing agent and preparation method thereof Download PDFInfo
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- CN113087037A CN113087037A CN202110367716.5A CN202110367716A CN113087037A CN 113087037 A CN113087037 A CN 113087037A CN 202110367716 A CN202110367716 A CN 202110367716A CN 113087037 A CN113087037 A CN 113087037A
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- cyanogen removing
- kaolin
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- JMANVNJQNLATNU-UHFFFAOYSA-N oxalonitrile Chemical compound N#CC#N JMANVNJQNLATNU-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 238000002360 preparation method Methods 0.000 title claims abstract description 18
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 claims abstract description 54
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical class O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 46
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 44
- 229920005552 sodium lignosulfonate Polymers 0.000 claims abstract description 27
- 235000010265 sodium sulphite Nutrition 0.000 claims abstract description 27
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 23
- 239000002893 slag Substances 0.000 claims abstract description 23
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical compound CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims abstract description 22
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims abstract description 22
- 235000017491 Bambusa tulda Nutrition 0.000 claims abstract description 22
- 241001330002 Bambuseae Species 0.000 claims abstract description 22
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims abstract description 22
- 239000011425 bamboo Substances 0.000 claims abstract description 22
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000920 calcium hydroxide Substances 0.000 claims abstract description 22
- 235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 22
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 22
- 239000003610 charcoal Substances 0.000 claims abstract description 22
- 229910000365 copper sulfate Inorganic materials 0.000 claims abstract description 22
- ARUVKPQLZAKDPS-UHFFFAOYSA-L copper(II) sulfate Chemical compound [Cu+2].[O-][S+2]([O-])([O-])[O-] ARUVKPQLZAKDPS-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 22
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 22
- 235000010413 sodium alginate Nutrition 0.000 claims abstract description 22
- 229940005550 sodium alginate Drugs 0.000 claims abstract description 22
- 239000000661 sodium alginate Substances 0.000 claims abstract description 22
- 235000003891 ferrous sulphate Nutrition 0.000 claims abstract description 17
- 239000011790 ferrous sulphate Substances 0.000 claims abstract description 17
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims abstract description 17
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims abstract description 17
- 239000002994 raw material Substances 0.000 claims abstract description 12
- 238000003756 stirring Methods 0.000 claims description 35
- 238000001354 calcination Methods 0.000 claims description 28
- 239000005995 Aluminium silicate Substances 0.000 claims description 22
- 235000012211 aluminium silicate Nutrition 0.000 claims description 22
- 239000011268 mixed slurry Substances 0.000 claims description 15
- 238000004321 preservation Methods 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 15
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- 238000005303 weighing Methods 0.000 claims description 10
- -1 hydroxypropyl Chemical group 0.000 claims description 7
- 229920001661 Chitosan Polymers 0.000 claims description 6
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 125000002057 carboxymethyl group Chemical group [H]OC(=O)C([H])([H])[*] 0.000 claims description 6
- 229920006317 cationic polymer Polymers 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 150000003242 quaternary ammonium salts Chemical class 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 5
- 239000007787 solid Substances 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 16
- 150000002825 nitriles Chemical class 0.000 abstract description 3
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 5
- 239000002351 wastewater Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- 239000002245 particle Substances 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- VSCWAEJMTAWNJL-UHFFFAOYSA-K aluminium trichloride Chemical compound Cl[Al](Cl)Cl VSCWAEJMTAWNJL-UHFFFAOYSA-K 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000004939 coking Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005189 flocculation Methods 0.000 description 2
- 230000016615 flocculation Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- LELOWRISYMNNSU-UHFFFAOYSA-N hydrogen cyanide Chemical compound N#C LELOWRISYMNNSU-UHFFFAOYSA-N 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229920002401 polyacrylamide Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QGUAJWGNOXCYJF-UHFFFAOYSA-N cobalt dinitrate hexahydrate Chemical compound O.O.O.O.O.O.[Co+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O QGUAJWGNOXCYJF-UHFFFAOYSA-N 0.000 description 1
- 238000010668 complexation reaction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 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 description 1
- 229910000360 iron(III) sulfate Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 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
-
- 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
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5236—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using inorganic agents
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/5263—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using natural chemical compounds
-
- 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
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
- C02F1/54—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities using organic material
- C02F1/56—Macromolecular compounds
-
- 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
-
- 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
- C02F2101/16—Nitrogen compounds, e.g. ammonia
- C02F2101/18—Cyanides
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
The invention provides a cyanogen removing agent and a preparation method thereof, and relates to the technical field of water quality treatment agents. The cyanogen removing agent comprises the following raw materials in parts by weight: 40-60 parts of modified kaolin, 20-30 parts of slaked lime, 4-6 parts of copper sulfate, 6-10 parts of sodium sulfite, 10-20 parts of polyaluminum chloride, 15-25 parts of bamboo charcoal, 2-4 parts of silicon dioxide, 12-18 parts of sodium alginate, 10-20 parts of ferrous sulfate, 3-5 parts of sodium lignosulfonate, 4-6 parts of sodium sulfite and 5-7 parts of carbide slag. Compared with the traditional cyanogen removing agent, the cyanogen removing agent prepared by the invention has the advantages that the removal rate of cyanides in water is improved, the removal rate is lower than the national allowable discharge standard, the treatment mode cost is lower, the problems of secondary pollution and the like to the environment are avoided, the secondary treatment is not needed, and the application prospect is considerable.
Description
Technical Field
The invention relates to the technical field of water quality treatment agents, in particular to a cyanogen removing agent and a preparation method thereof.
Background
Cyanide is a highly toxic substance, and especially when in the acidic PH range, it becomes a highly toxic hydrocyanic acid. The cyanide-containing wastewater must be treated before being discharged into a sewer or a stream. Because cyanide is extremely toxic, indexes after treatment must absolutely reach the standard, serious pollution is caused if the cyanide is discharged into a water body, and the cyanide complex influences the further treatment of the wastewater, the cyanide in the wastewater is removed firstly, and the next treatment can be carried out only after the water quality after treatment reaches the standard.
Patent publication No. CN110759393A, entitled cyanogen removing agent and its preparation method and application, includes activated carbon, FeSO 4.7H 2O, polymeric ferric sulfate, polymeric aluminum chloride, SnCl4, CuSO 4.5H 2O, Co (NO3) 2.6H 2O and polyacrylamide; the flocculation speed of the coking wastewater is improved and the settling time is effectively shortened by the synergistic effect of the polyaluminium chloride and the polyacrylamide; the adsorption effect of organic matters such as pigment in the coking wastewater is realized by adopting the activated carbon, and after the activated carbon is compounded with the ferric salt and the heavy metal salt, the adsorption of cyanide which is not subjected to complexation is realized, and the cyanogen removing effect is enhanced.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a cyanogen removing agent and a preparation method thereof, which solve the defects and shortcomings of the prior art.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme: the cyanogen removing agent comprises the following raw materials in parts by weight: 40-60 parts of modified kaolin, 20-30 parts of slaked lime, 4-6 parts of copper sulfate, 6-10 parts of sodium sulfite, 10-20 parts of polyaluminum chloride, 15-25 parts of bamboo charcoal, 2-4 parts of silicon dioxide, 12-18 parts of sodium alginate, 10-20 parts of ferrous sulfate, 3-5 parts of sodium lignosulfonate and 5-7 parts of carbide slag.
Preferably, the cyanogen removing agent comprises the following raw materials in parts by weight: 40 parts of modified kaolin, 20 parts of slaked lime, 4 parts of copper sulfate, 6 parts of sodium sulfite, 10 parts of polyaluminum chloride, 15 parts of bamboo charcoal, 2 parts of silicon dioxide, 12 parts of sodium alginate, 10 parts of ferrous sulfate, 3 parts of sodium lignosulfonate and 5 parts of carbide slag.
Preferably, the cyanogen removing agent comprises the following raw materials in parts by weight: 50 parts of modified kaolin, 25 parts of slaked lime, 5 parts of copper sulfate, 8 parts of sodium sulfite, 15 parts of polyaluminum chloride, 20 parts of bamboo charcoal, 3 parts of silicon dioxide, 15 parts of sodium alginate, 15 parts of ferrous sulfate, 4 parts of sodium lignosulfonate and 6 parts of carbide slag.
Preferably, the cyanogen removing agent comprises the following raw materials in parts by weight: 60 parts of modified kaolin, 30 parts of slaked lime, 6 parts of copper sulfate, 10 parts of sodium sulfite, 20 parts of polyaluminum chloride, 25 parts of bamboo charcoal, 4 parts of silicon dioxide, 18 parts of sodium alginate, 20 parts of ferrous sulfate, 5 parts of sodium lignosulfonate and 7 parts of carbide slag.
A preparation method of a cyanogen removing agent comprises the following steps:
s1, preparing the modified kaolin, wherein the preparation method comprises the following steps:
1) weighing kaolin, feeding the kaolin into a roasting furnace for roasting, adding zinc powder, aluminum powder and a hydrochloric acid solution into the kaolin which is roasted at a high temperature, and placing the mixture into a sealed container for stirring;
2) uniformly stirring to obtain mixed slurry with the solid content of 20-50%, adding quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber into the mixed slurry, stirring, heating the mixed slurry to a specified temperature under a closed condition, and then carrying out heat preservation treatment;
3) concentrating the slurry after heat preservation, then feeding the slurry into a calcining furnace for calcining, naturally cooling the slurry after calcining, and then carrying out crushing treatment, wherein the granularity after crushing is 100-200 meshes;
s2, weighing the modified kaolin, slaked lime, copper sulfate, sodium sulfite, polyaluminum chloride, bamboo charcoal, silicon dioxide, sodium alginate, ferrous sulfate, sodium lignosulfonate and carbide slag according to parts by weight;
s3, fully stirring and mixing the modified kaolin, the slaked lime, the bamboo charcoal and the sodium lignosulphonate, adding copper sulfate, sodium sulfite, polyaluminum chloride, silicon dioxide, sodium alginate, sodium lignosulphonate and carbide slag, and continuously stirring and uniformly mixing to obtain the cyanogen removing agent.
Preferably, the heating temperature is 100-150 ℃, and the constant-temperature heat preservation time is 1-3 hours.
Preferably, the kaolin is calcined at the temperature of 600-900 ℃ for 2-5 hours, and the kaolin is calcined in the calciner at the temperature of 600-1000 ℃ for 1-3 hours.
Preferably, the time for stirring twice in the step 3 is 5-15min, and the stirring speed is 300-600 r/min.
(III) advantageous effects
The invention provides a cyanogen removing agent and a preparation method thereof. The method has the following beneficial effects:
1. compared with the traditional cyanogen removing agent, the cyanogen removing agent prepared by the invention has the advantages that the removal rate of cyanides in water is improved, the removal rate is lower than the national allowable discharge standard, the treatment mode cost is lower, the problems of secondary pollution and the like to the environment are avoided, the secondary treatment is not needed, and the application prospect is considerable.
2. According to the invention, the adsorption of kaolin is utilized to adsorb cyanide and heavy metal ions in water, so that the content of harmful substances in water is reduced, and the kaolin is modified, so that on one hand, the kaolin is combined with the action of an inorganic flocculant through the matching of zinc powder, aluminum powder and a hydrochloric acid solution, and on the other hand, the kaolin is combined with the action of an organic flocculant through the matching of a quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber, so that the adsorption of the modified kaolin is better, the modified kaolin has a flocculation effect, and the water quality treatment cost is reduced.
3. According to the invention, in the process of treating water, oxygen is introduced, and due to the cooperation of the oxygen and sodium sulfite, cyanide ions in the water can be neutralized, and corresponding sulfate ions are generated, so that the acidity in the system is supplemented, and the system is acidified by the sulfate ions, so that the speed of the carbide slag for generating the precipitate of the cyanide ions can be increased.
Detailed Description
The following will clearly and completely describe the technical solutions in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
the embodiment of the invention provides a cyanogen removing agent, which comprises the following raw materials in parts by weight: 40 parts of modified kaolin, 20 parts of slaked lime, 4 parts of copper sulfate, 6 parts of sodium sulfite, 10 parts of polyaluminum chloride, 15 parts of bamboo charcoal, 2 parts of silicon dioxide, 12 parts of sodium alginate, 10 parts of ferrous sulfate, 3 parts of sodium lignosulfonate and 5 parts of carbide slag.
A preparation method of a cyanogen removing agent comprises the following steps:
s1, preparing the modified kaolin, wherein the preparation method comprises the following steps:
1) weighing kaolin, feeding the kaolin into a roasting furnace for roasting at the roasting temperature of 600-900 ℃ for 2-5 hours, adding zinc powder, aluminum powder and a hydrochloric acid solution into the kaolin which is roasted at high temperature, and placing the mixture into a sealed container for stirring;
2) uniformly stirring to obtain mixed slurry with the solid content of 20-50%, adding quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber into the mixed slurry, stirring, heating the mixed slurry to a specified temperature under a closed condition, and then carrying out heat preservation treatment, wherein the heating temperature is 100-150 ℃, and the constant-temperature heat preservation time is 1-3 hours;
3) concentrating the slurry after heat preservation, and then feeding the slurry into a calcining furnace for calcining, wherein the calcining temperature in the calcining furnace is 600-1000 ℃, the calcining time is 1-3 hours, the slurry is naturally cooled after calcining, and then crushing treatment is carried out, and the particle size after crushing is 100-200 meshes;
s2, weighing the modified kaolin, slaked lime, copper sulfate, sodium sulfite, polyaluminum chloride, bamboo charcoal, silicon dioxide, sodium alginate, ferrous sulfate, sodium lignosulfonate and carbide slag according to parts by weight;
s3, fully stirring and mixing the modified kaolin, the slaked lime, the bamboo charcoal and the sodium lignosulphonate, adding copper sulfate, sodium sulfite, polyaluminum chloride, silicon dioxide, sodium alginate, sodium lignosulphonate, sodium sulfite and carbide slag, and continuously stirring and uniformly mixing to obtain the cyanogen removing agent, wherein the time for stirring twice is 5-15min, and the stirring speed is 300-600 r/min.
Example two:
the embodiment of the invention provides a cyanogen removing agent, which comprises the following raw materials in parts by weight: 50 parts of modified kaolin, 25 parts of slaked lime, 5 parts of copper sulfate, 8 parts of sodium sulfite, 15 parts of polyaluminum chloride, 20 parts of bamboo charcoal, 3 parts of silicon dioxide, 15 parts of sodium alginate, 15 parts of ferrous sulfate, 4 parts of sodium lignosulfonate and 6 parts of carbide slag.
A preparation method of a cyanogen removing agent comprises the following steps:
s1, preparing the modified kaolin, wherein the preparation method comprises the following steps:
1) weighing kaolin, feeding the kaolin into a roasting furnace for roasting at the roasting temperature of 600-900 ℃ for 2-5 hours, adding zinc powder, aluminum powder and a hydrochloric acid solution into the kaolin which is roasted at high temperature, and placing the mixture into a sealed container for stirring;
2) uniformly stirring to obtain mixed slurry with the solid content of 20-50%, adding quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber into the mixed slurry, stirring, heating the mixed slurry to a specified temperature under a closed condition, and then carrying out heat preservation treatment, wherein the heating temperature is 100-150 ℃, and the constant-temperature heat preservation time is 1-3 hours;
3) concentrating the slurry after heat preservation, and then feeding the slurry into a calcining furnace for calcining, wherein the calcining temperature in the calcining furnace is 600-1000 ℃, the calcining time is 1-3 hours, the slurry is naturally cooled after calcining, and then crushing treatment is carried out, and the particle size after crushing is 100-200 meshes;
s2, weighing the modified kaolin, slaked lime, copper sulfate, sodium sulfite, polyaluminum chloride, bamboo charcoal, silicon dioxide, sodium alginate, ferrous sulfate, sodium lignosulfonate and carbide slag according to parts by weight;
s3, fully stirring and mixing the modified kaolin, the slaked lime, the bamboo charcoal and the sodium lignosulphonate, adding copper sulfate, sodium sulfite, polyaluminum chloride, silicon dioxide, sodium alginate, sodium lignosulphonate, sodium sulfite and carbide slag, and continuously stirring and uniformly mixing to obtain the cyanogen removing agent, wherein the time for stirring twice is 5-15min, and the stirring speed is 300-600 r/min.
Example three:
the embodiment of the invention provides a cyanogen removing agent, which comprises the following raw materials in parts by weight: 60 parts of modified kaolin, 30 parts of slaked lime, 6 parts of copper sulfate, 10 parts of sodium sulfite, 20 parts of polyaluminum chloride, 25 parts of bamboo charcoal, 4 parts of silicon dioxide, 18 parts of sodium alginate, 20 parts of ferrous sulfate, 5 parts of sodium lignosulfonate and 7 parts of carbide slag.
A preparation method of a cyanogen removing agent comprises the following steps:
s1, preparing the modified kaolin, wherein the preparation method comprises the following steps:
1) weighing kaolin, feeding the kaolin into a roasting furnace for roasting at the roasting temperature of 600-900 ℃ for 2-5 hours, adding zinc powder, aluminum powder and a hydrochloric acid solution into the kaolin which is roasted at high temperature, and placing the mixture into a sealed container for stirring;
2) uniformly stirring to obtain mixed slurry with the solid content of 20-50%, adding quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber into the mixed slurry, stirring, heating the mixed slurry to a specified temperature under a closed condition, and then carrying out heat preservation treatment, wherein the heating temperature is 100-150 ℃, and the constant-temperature heat preservation time is 1-3 hours;
3) concentrating the slurry after heat preservation, and then feeding the slurry into a calcining furnace for calcining, wherein the calcining temperature in the calcining furnace is 600-1000 ℃, the calcining time is 1-3 hours, the slurry is naturally cooled after calcining, and then crushing treatment is carried out, and the particle size after crushing is 100-200 meshes;
s2, weighing the modified kaolin, slaked lime, copper sulfate, sodium sulfite, polyaluminum chloride, bamboo charcoal, silicon dioxide, sodium alginate, ferrous sulfate, sodium lignosulfonate and carbide slag according to parts by weight;
s3, fully stirring and mixing the modified kaolin, the slaked lime, the bamboo charcoal and the sodium lignosulphonate, adding copper sulfate, sodium sulfite, polyaluminum chloride, silicon dioxide, sodium alginate, sodium lignosulphonate, sodium sulfite and carbide slag, and continuously stirring and uniformly mixing to obtain the cyanogen removing agent, wherein the time for stirring twice is 5-15min, and the stirring speed is 300-600 r/min.
In the invention, the input usage amount of the cyanogen removing agent is 6-10g/L, a certain water area is selected as an experimental object, a plurality of water quality samples in the water area are quantitatively taken, wherein one sample is not treated and is used as a blank case; one of the samples is added with a traditional cyanogen removing agent, the sample is taken as a comparative example, three water quality samples are additionally selected and added with the cyanogen removing agents prepared in the three examples, and the cyanide contents of the blank example, the comparative example and the examples are detected, and the results are shown in the following table 1:
TABLE 1
As can be seen from the table 1, compared with the traditional cyanogen removing agent, the cyanogen removing agent prepared by the invention has the advantages that the removal rate of cyanides in water is improved, the discharge rate is lower than the national allowable discharge standard, the treatment mode cost is lower, the problems of secondary pollution and the like to the environment are avoided, the secondary treatment is not needed, and the application prospect is considerable.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a reference structure" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A cyanogen removing agent, which is characterized in that: the cyanogen removing agent comprises the following raw materials in parts by weight: 40-60 parts of modified kaolin, 20-30 parts of slaked lime, 4-6 parts of copper sulfate, 6-10 parts of sodium sulfite, 10-20 parts of polyaluminum chloride, 15-25 parts of bamboo charcoal, 2-4 parts of silicon dioxide, 12-18 parts of sodium alginate, 10-20 parts of ferrous sulfate, 3-5 parts of sodium lignosulfonate and 5-7 parts of carbide slag.
2. The cyanogen removing agent according to claim 1, wherein: the cyanogen removing agent comprises the following raw materials in parts by weight: 40 parts of modified kaolin, 20 parts of slaked lime, 4 parts of copper sulfate, 6 parts of sodium sulfite, 10 parts of polyaluminum chloride, 15 parts of bamboo charcoal, 2 parts of silicon dioxide, 12 parts of sodium alginate, 10 parts of ferrous sulfate, 3 parts of sodium lignosulfonate and 5 parts of carbide slag.
3. The cyanogen removing agent according to claim 1, wherein: the cyanogen removing agent comprises the following raw materials in parts by weight: 50 parts of modified kaolin, 25 parts of slaked lime, 5 parts of copper sulfate, 8 parts of sodium sulfite, 15 parts of polyaluminum chloride, 20 parts of bamboo charcoal, 3 parts of silicon dioxide, 15 parts of sodium alginate, 15 parts of ferrous sulfate, 4 parts of sodium lignosulfonate and 6 parts of carbide slag.
4. The cyanogen removing agent according to claim 1, wherein: the cyanogen removing agent comprises the following raw materials in parts by weight: 60 parts of modified kaolin, 30 parts of slaked lime, 6 parts of copper sulfate, 10 parts of sodium sulfite, 20 parts of polyaluminum chloride, 25 parts of bamboo charcoal, 4 parts of silicon dioxide, 18 parts of sodium alginate, 20 parts of ferrous sulfate, 5 parts of sodium lignosulfonate and 7 parts of carbide slag.
5. The preparation method of the cyanogen removing agent is characterized by comprising the following steps: the preparation method comprises the following steps:
s1, preparing the modified kaolin, wherein the preparation method comprises the following steps:
1) weighing kaolin, feeding the kaolin into a roasting furnace for roasting, adding zinc powder, aluminum powder and a hydrochloric acid solution into the kaolin which is roasted at a high temperature, and placing the mixture into a sealed container for stirring;
2) uniformly stirring to obtain mixed slurry with the solid content of 20-50%, adding quaternary ammonium salt cationic polymer, carboxymethyl chitosan and hydroxypropyl fiber into the mixed slurry, stirring, heating the mixed slurry to a specified temperature under a closed condition, and then carrying out heat preservation treatment;
3) concentrating the slurry after heat preservation, then feeding the slurry into a calcining furnace for calcining, naturally cooling the slurry after calcining, and then carrying out crushing treatment, wherein the granularity after crushing is 100-200 meshes;
s2, weighing the modified kaolin, slaked lime, copper sulfate, sodium sulfite, polyaluminum chloride, bamboo charcoal, silicon dioxide, sodium alginate, ferrous sulfate, sodium lignosulfonate and carbide slag according to parts by weight;
s3, fully stirring and mixing the modified kaolin, the slaked lime, the bamboo charcoal and the sodium lignosulphonate, adding copper sulfate, sodium sulfite, polyaluminum chloride, silicon dioxide, sodium alginate, sodium lignosulphonate and carbide slag, and continuously stirring and uniformly mixing to obtain the cyanogen removing agent.
6. The method for preparing a cyanogen removing agent according to claim 5, wherein: the temperature for heating is 100-150 ℃, and the time for constant temperature preservation is 1-3 hours.
7. The method for preparing a cyanogen removing agent according to claim 5, wherein: the kaolin is calcined at the temperature of 600-900 ℃, the calcination time is 2-5 hours, the calcination temperature in the calcination furnace is 600-1000 ℃, and the calcination time is 1-3 hours.
8. The method for preparing a cyanogen removing agent according to claim 5, wherein: the time of the two times of stirring in the step 3 is 5-15min, and the stirring speed is 600 r/min.
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Application publication date: 20210709 |