CN115947441A - Method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine - Google Patents
Method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine Download PDFInfo
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- KFSLWBXXFJQRDL-UHFFFAOYSA-N Peracetic acid Chemical compound CC(=O)OO KFSLWBXXFJQRDL-UHFFFAOYSA-N 0.000 title claims abstract description 106
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000010842 industrial wastewater Substances 0.000 title claims abstract description 46
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 35
- AVXURJPOCDRRFD-UHFFFAOYSA-N Hydroxylamine Chemical compound ON AVXURJPOCDRRFD-UHFFFAOYSA-N 0.000 title claims abstract description 26
- 238000006243 chemical reaction Methods 0.000 claims abstract description 38
- ZNBNBTIDJSKEAM-UHFFFAOYSA-N 4-[7-hydroxy-2-[5-[5-[6-hydroxy-6-(hydroxymethyl)-3,5-dimethyloxan-2-yl]-3-methyloxolan-2-yl]-5-methyloxolan-2-yl]-2,8-dimethyl-1,10-dioxaspiro[4.5]decan-9-yl]-2-methyl-3-propanoyloxypentanoic acid Chemical compound C1C(O)C(C)C(C(C)C(OC(=O)CC)C(C)C(O)=O)OC11OC(C)(C2OC(C)(CC2)C2C(CC(O2)C2C(CC(C)C(O)(CO)O2)C)C)CC1 ZNBNBTIDJSKEAM-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910000378 hydroxylammonium sulfate Inorganic materials 0.000 claims abstract description 22
- 230000002378 acidificating effect Effects 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 14
- 239000003085 diluting agent Substances 0.000 claims abstract description 11
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 40
- 239000000243 solution Substances 0.000 claims description 32
- 238000003756 stirring Methods 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- 238000002156 mixing Methods 0.000 claims description 7
- 239000011259 mixed solution Substances 0.000 claims description 6
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 4
- 229910021641 deionized water Inorganic materials 0.000 claims description 4
- 238000007865 diluting Methods 0.000 claims description 4
- 238000006555 catalytic reaction Methods 0.000 claims description 3
- 239000000356 contaminant Substances 0.000 claims description 3
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims description 3
- 239000000203 mixture Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 abstract description 32
- 239000000126 substance Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 6
- 230000007547 defect Effects 0.000 abstract description 5
- 229910052742 iron Inorganic materials 0.000 abstract description 5
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000002253 acid Substances 0.000 abstract 1
- 238000009776 industrial production Methods 0.000 abstract 1
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract 1
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 abstract 1
- 238000003911 water pollution Methods 0.000 abstract 1
- VTLYFUHAOXGGBS-UHFFFAOYSA-N Fe3+ Chemical compound [Fe+3] VTLYFUHAOXGGBS-UHFFFAOYSA-N 0.000 description 5
- 230000015556 catabolic process Effects 0.000 description 5
- 238000006731 degradation reaction Methods 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 238000010170 biological method Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000004033 plastic Substances 0.000 description 3
- 229920003023 plastic Polymers 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 239000004417 polycarbonate Substances 0.000 description 2
- 229920000515 polycarbonate Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000001988 toxicity Effects 0.000 description 2
- 231100000419 toxicity Toxicity 0.000 description 2
- 206010002383 Angina Pectoris Diseases 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- -1 baby bottles Substances 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 208000029078 coronary artery disease Diseases 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000000598 endocrine disruptor Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000001856 erectile effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000008821 health effect Effects 0.000 description 1
- 208000019622 heart disease Diseases 0.000 description 1
- 231100001240 inorganic pollutant Toxicity 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
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- 229910052760 oxygen Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
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- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
A method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine relates to a method for removing organic pollutants in industrial wastewater. The invention aims to solve the problems that the traditional Fenton method has low removal rate of organic pollutants in water, consumes large amount of chemicals, generates a large amount of iron mud, and the existing methods for removing the organic pollutants in the industrial wastewater are mostly not suitable for acidic water, have defects and defects, and cannot have the advantages of simple operation, low cost and environmental protection. The method comprises the following steps: 1. preparing peroxyacetic acid diluent; 2. adding peroxyacetic acid diluent into industrial wastewater; 3. FeSO (ferric oxide) is added 4 The solution and the hydroxylamine sulfate solution are added into an acid reaction system at the same time for reaction. The invention has simple reaction process, good treatment effect and low costLow cost, easy control, suitability for common organic industrial wastewater and capability of solving the problem of water pollution caused by organic pollutants in the industrial production process.
Description
Technical Field
The invention relates to a method for removing organic pollutants in industrial wastewater.
Background
In addition to inorganic pollutants, the industrial wastewater contains a large amount of organic pollutants which have the effects of toxicity and reduction of dissolved oxygen in water on an ecosystem and are harmful to human health, and the industrial wastewater is various in variety and low in content and is difficult to degrade by using a conventional chemical method. The current mainstream removal technology is a biological method, a chemical oxidation method, a Fenton method, an adsorption method and an incineration method, and the biological method has poor degradation effect on part of organic pollutants; the chemical oxidation method has high cost and is easy to cause the pollution of subsequent byproducts; the traditional Fenton method has high requirement on iron concentration, a large amount of iron mud is easily generated in the treatment process, and the adsorption method needs further treatment, thereby being capable of treating the symptoms and the root causes; the incineration method is suitable for treating high-concentration organic wastewater, and is not widely applied to the treatment of low-concentration organic wastewater.
Bisphenol a is one of the most widely used industrial compounds in the world, and as a representative non-biodegradable pollutant, it is not considered to be a hole-free in human life. In the industry, bisphenol a is used for synthesizing materials such as epoxy resin and polycarbonate, and in daily life, the addition of bisphenol a can make plastics have the characteristics of colorless transparency, durability, lightness and outstanding impact resistance, can isolate the corrosion of the interior of a metal container, is an indispensable part for enhancing the physicochemical properties of plastics and serving as a barrier of articles, and is generally used for can linings and hard polycarbonate plastics, such as baby bottles, water bottles, food storage containers, power plugs and automobile body primers.
In addition, bisphenol a is a chemical substance which is extremely harmful to the human body, is an endocrine disrupter, and is associated with various adverse health effects. Long term exposure to bisphenol a has been shown to cause a variety of heart diseases in adults, including heart attacks, coronary heart disease, and angina pectoris. Bisphenol a also significantly affects male sexual function, including decreased libido, erectile difficulty, and ejaculatory difficulty.
Bisphenol a removal processes have been developed that include: the biological method, the chemical oxidation method, the Fenton method, the adsorption method, the incineration method and the like have the defects and shortcomings, few treatment methods are suitable for the acidic water body, and the method has the advantages of simplicity in operation, high removal rate, low cost, environmental friendliness and the like.
Disclosure of Invention
The invention aims to solve the problems that the traditional Fenton method is low in removal rate of organic pollutants in water, large in consumed chemical agent amount and capable of generating a large amount of iron mud, and most of other existing methods for removing the organic pollutants in the industrial wastewater are not suitable for acidic water, have defects and cannot have the advantages of being simple in operation, low in cost and environment-friendly, and provides a method for removing the organic pollutants in the industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine.
A method for removing organic pollutants in industrial wastewater by using peroxyacetic acid in cooperation with Fe (II) and hydroxylamine is completed according to the following steps:
1. diluting the prepared peroxyacetic acid solution by using deionized water to obtain a peroxyacetic acid diluent;
2. adding the peroxyacetic acid diluent into the industrial wastewater, adjusting the pH value to 3, and uniformly mixing to obtain acidic industrial wastewater;
3. the prepared FeSO 4 Adding the solution and the prepared hydroxylamine sulfate solution into the acidic industrial wastewater obtained in the second step simultaneously to obtain a reaction system; and reacting the reaction system at the temperature of 20-25 ℃ for 30-90 min under the stirring condition to obtain the industrial wastewater with the organic pollutants removed.
The principle and the advantages of the invention are as follows:
the invention provides a method for removing organic pollutants from acidic industrial wastewater, which takes bisphenol A as a representative pollutant and aims to oxidize the bisphenol A into other harmless substances by utilizing Fe (II) and added peracetic acid diluent so as to reduce the toxicity and high-fluidity bisphenol A concentration in water;
in a first aspect, the technical principle of the invention is as follows: because the pH of the system is acidic, fe (II) reacts with a peracetic acid solution in water, peracetic acid and hydrogen peroxide in the peracetic acid can generate active substances with oxidizing capability through Fenton reaction and Fenton-like reaction, wherein the active substances comprise OH, fe (IV) and organic free radicals such as CH 3 COO, etc., which react with bisphenol A to remove bisphenol A in water;
in the second aspect, compared with the prior art, the method of the invention for removing bisphenol A in acidic wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine has the following advantages: the hydroxylamine added in the invention can reduce Fe (III) in the system into Fe (II), thereby accelerating the cycle process of Fenton reaction, overcoming the defects of high requirement on Fe (II) content, extremely low conversion rate of Fe (III) to Fe (II), high cost, large energy consumption, more generated iron mud and the like in the traditional Fenton process, and the hydroxylamine is used for treating by using the peracetic acid and the environment-friendly Fe (II) added in the system.
Detailed Description
The first embodiment is as follows: the method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine is completed according to the following steps:
1. diluting the prepared peroxyacetic acid solution by using deionized water to obtain a peroxyacetic acid diluent;
2. adding the peroxyacetic acid diluent into the industrial wastewater, adjusting the pH value to 3, and uniformly mixing to obtain acidic industrial wastewater;
3. the prepared FeSO 4 Adding the solution and the prepared hydroxylamine sulfate solution into the acidic industrial wastewater obtained in the second step simultaneously to obtain a reaction system; and reacting the reaction system at the temperature of 20-25 ℃ for 30-90 min under the stirring condition to obtain the industrial wastewater with the organic pollutants removed.
The second embodiment is as follows: the present embodiment differs from the present embodiment in that: the preparation method of the prepared peroxyacetic acid solution comprises the following steps:
uniformly mixing chromatographically pure acetic acid and a hydrogen peroxide solution with the mass fraction of 30% in a volume ratio of 3; adding concentrated H with the mass fraction accounting for 3 percent of the total mass of the mixed solution into the mixed solution 2 SO 4 Stirring the mixture by a rotor at the temperature of 25 ℃, and carrying out catalytic reaction for 24 to 48 hours to obtain the prepared peroxyacetic acid solutionStoring the solution at 4 deg.C in shade; said rich H 2 SO 4 The mass fraction of (2) is 98%. The other steps are the same as those in the first embodiment.
The third concrete implementation mode: the difference between this embodiment and the first or second embodiment is: the concentration of the diluted peroxyacetic acid in the step one is 50mmol/L. The other steps are the same as those in the first or second embodiment.
The fourth concrete implementation mode: the difference between this embodiment and one of the first to third embodiments is as follows: the prepared FeSO obtained in the step two 4 The concentration of the solution is 5mmol/L and the solution is stored at 4 ℃; the concentration of the prepared hydroxylamine sulfate solution in the step two is 50mmol/L, and the hydroxylamine sulfate solution is stored at 4 ℃. The other steps are the same as those in the first to third embodiments.
The fifth concrete implementation mode: the difference between this embodiment and the first to the fourth embodiments is: in step two, HClO is used 4 The pH was adjusted to 3. The other steps are the same as those in the first to fourth embodiments.
The sixth specific implementation mode: the difference between this embodiment and one of the first to fifth embodiments is: and the organic pollutant in the industrial wastewater in the step two is bisphenol A. The other steps are the same as those in the first to fifth embodiments.
The seventh embodiment: the difference between this embodiment and the first to sixth embodiments is: the concentration of the hydroxylamine sulfate in the reaction system in the step three is 20-200 mu mol/L. The other steps are the same as those in the first to sixth embodiments.
The specific implementation mode is eight: the difference between this embodiment and one of the first to seventh embodiments is: the concentration of Fe (II) in the reaction system described in step three was 10. Mu. Mol/L. The other steps are the same as those in the first to seventh embodiments.
The specific implementation method nine: the difference between this embodiment and the first to eighth embodiments is: the concentration of the peroxyacetic acid in the reaction system in the third step is 100 mu mol/L; the concentration of the organic contaminant in the reaction system described in the third step is 10. Mu. Mol/L. The other steps are the same as those in the first to eighth embodiments.
The detailed implementation mode is ten: the difference between this embodiment and one of the first to ninth embodiments is as follows: the stirring speed in the third step is 350 r/min-900 r/min. The other steps are the same as those in the first to ninth embodiments.
The following examples were employed to demonstrate the beneficial effects of the present invention:
example 1: a method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine is completed according to the following steps:
1. diluting the prepared peroxyacetic acid solution by using deionized water to obtain a peroxyacetic acid diluent;
the concentration of the peroxyacetic acid diluent in the step one is 50mmol/L;
2. adding diluted peroxyacetic acid into industrial wastewater, and using HClO 4 Adjusting the pH value to 3, and uniformly mixing to obtain acidic industrial wastewater;
the organic pollutant in the industrial wastewater in the step two is bisphenol A;
the prepared FeSO prepared in the step two 4 The concentration of the solution is 5mmol/L and the solution is stored at 4 ℃;
the concentration of the prepared hydroxylamine sulfate solution in the step two is 50mmol/L, and the hydroxylamine sulfate solution is stored at 4 ℃;
3. the prepared FeSO 4 Adding the solution and the prepared hydroxylamine sulfate solution into the acidic industrial wastewater obtained in the second step simultaneously to obtain a reaction system; and reacting the reaction system for 30-90 min at 20-25 ℃ under stirring to obtain the industrial wastewater with the organic pollutants removed.
The stirring speed in the third step is 600rpm;
in the third step, the concentration of Fe (II) in the reaction system is 10 mu mol/L, the concentration of hydroxylamine sulfate is 100 mu mol/L, the concentration of peroxyacetic acid is 100 mu mol/L, and the concentration of bisphenol A is 10 mu mol/L;
the concentration of bisphenol A in industrial wastewater from which organic contaminants (bisphenol A) were removed was determined after sampling at specific time points of 0,1,5, 15, 30, 60, 90 min.
The preparation method of the prepared peroxyacetic acid solution in the first step comprises the following steps:
uniformly mixing chromatographically pure acetic acid and a hydrogen peroxide solution with the mass fraction of 30% in a volume ratio of 3; adding concentrated H with the mass fraction accounting for 3 percent of the total mass of the mixed solution into the mixed solution 2 SO 4 Stirring with a rotor at 25 ℃, carrying out catalytic reaction for 24 hours to obtain a prepared peroxyacetic acid solution, and storing in a shade at 4 ℃; said rich H 2 SO 4 The mass fraction of (2) is 98%.
Comparative example 1: the present embodiment is different from embodiment 1 in that: the concentration of the hydroxylamine sulfate in the reaction system in the third step is 0 mu mol/L. The other steps and parameters were the same as in example 1.
Comparative example 2: the present example is different from example 1 in that: the concentration of Fe (II) in the reaction system described in step three was 0. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Table 1 shows the BPA (bisphenol A) removal rate at different times in the reaction system of example 1, comparative example 1 and comparative example 2;
TABLE 1
As can be seen from table 1: the traditional Fenton system (Fe (II) + PAA) degrades 22% of organic pollutants within 1min, but has little effect on removing bisphenol A afterwards, which is probably because the circulation rate of Fe (III) and Fe (II) is too slow, and the reaction rate is reduced sharply because of insufficient Fe (II) in the system; after hydroxylamine is added, the system constructed by the invention contains (Fe (II) + NH 2 OH + PAA) bisphenol A removal Rate Overall compared to hydroxylamine (NH) alone 2 OH + PAA) is much faster, and the removal rate of bisphenol A can reach about 90% at 90min, the removal effect is very excellent probably because hydroxylamine can extremely improve the removal rateThe circulating reaction rate of the conversion from Fe (III) to Fe (II) is greatly enhanced, so that the Fenton reaction is continuously carried out, and a large amount of free radicals are continuously generated to degrade pollutants.
Example 2: the present embodiment is different from embodiment 1 in that: the concentration of hydroxylamine sulfate in the reaction system described in the third step is 20. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Example 3: the present embodiment is different from embodiment 1 in that: the concentration of hydroxylamine sulfate in the reaction system described in the third step was 40. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Example 4: the present embodiment is different from embodiment 1 in that: the concentration of hydroxylamine sulfate in the reaction system described in the third step was 60. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Example 5: the present embodiment is different from embodiment 1 in that: the concentration of hydroxylamine sulfate in the reaction system described in the third step was 150. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Example 6: the present embodiment is different from embodiment 1 in that: the concentration of hydroxylamine sulfate in the reaction system described in step three was 200. Mu. Mol/L. The other steps and parameters were the same as in example 1.
Table 2 shows BPA (bisphenol A) removal rates at different times in the reaction systems of examples 1 to 6;
TABLE 2
As can be seen from Table 2, as the concentration of hydroxylamine sulfate increases, the degradation rate and degradation rate of bisphenol A also increase because hydroxylamine reduces Fe (III) to Fe (II), the content of Fe (II) in the reaction system is kept at a high level, and when the concentration of hydroxylamine sulfate further increases, the degradation rate and degradation rate of bisphenol A do not increase significantly, which is probably because when the concentration of hydroxylamine is too high, part of the active radicals in the system are removed, and thus the removal effect is not increased significantly.
Claims (10)
1. A method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine is characterized by comprising the following steps:
1. diluting the prepared peroxyacetic acid solution by using deionized water to obtain a peroxyacetic acid diluent;
2. adding the peroxyacetic acid diluent into the industrial wastewater, adjusting the pH value to 3, and uniformly mixing to obtain acidic industrial wastewater;
3. the prepared FeSO 4 Adding the solution and the prepared hydroxylamine sulfate solution into the acidic industrial wastewater obtained in the second step simultaneously to obtain a reaction system; and reacting the reaction system at the temperature of 20-25 ℃ for 30-90 min under the stirring condition to obtain the industrial wastewater with the organic pollutants removed.
2. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the prepared peracetic acid solution is prepared by the following method:
uniformly mixing chromatographically pure acetic acid and a hydrogen peroxide solution with the mass fraction of 30% in a volume ratio of 3; adding concentrated H with the mass fraction accounting for 3 percent of the total mass of the mixed solution into the mixed solution 2 SO 4 Stirring the mixture by a rotor at 25 ℃, carrying out catalytic reaction for 24-48 hours to obtain a prepared peroxyacetic acid solution, and storing the peroxyacetic acid solution in a shade at 4 ℃; said rich H 2 SO 4 The mass fraction of (2) is 98%.
3. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the concentration of the dilute peracetic acid in the first step is 50mmol/L.
4. The method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine as claimed in claim 1, wherein the formulated FeSO in the step two 4 The concentration of the solution is 5mmol/L and the solution is stored at 4 ℃; the concentration of the prepared hydroxylamine sulfate solution in the step two is 50mmol/L, and the hydroxylamine sulfate solution is stored at 4 ℃.
5. The method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine as claimed in claim 1, wherein HClO is used in the second step 4 The pH was adjusted to 3.
6. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the organic pollutants in the industrial wastewater in the second step is bisphenol A.
7. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the concentration of hydroxylamine sulfate in the reaction system in the third step is 20 μmol/L to 200 μmol/L.
8. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the concentration of Fe (II) in the reaction system in the third step is 10 μmol/L.
9. The method for removing organic pollutants in industrial wastewater by using peracetic acid in cooperation with Fe (II) and hydroxylamine as claimed in claim 1, wherein the concentration of the peracetic acid in the reaction system in the third step is 100 μmol/L; the concentration of the organic contaminant in the reaction system described in the third step is 10. Mu. Mol/L.
10. The method for removing organic pollutants in industrial wastewater by using peracetic acid in combination with Fe (II) and hydroxylamine as claimed in claim 1, wherein the stirring speed in the third step is 350r/min to 900r/min.
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2023
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| 陈昭斌等: "消毒学概论", 30 November 2020, 人民卫生出版社, pages: 68 * |
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