CN110606614A - Treatment method of ADN production wastewater - Google Patents
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- CN110606614A CN110606614A CN201911045468.1A CN201911045468A CN110606614A CN 110606614 A CN110606614 A CN 110606614A CN 201911045468 A CN201911045468 A CN 201911045468A CN 110606614 A CN110606614 A CN 110606614A
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- 239000002351 wastewater Substances 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 45
- 230000003647 oxidation Effects 0.000 claims abstract description 11
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 4
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims description 32
- 230000001699 photocatalysis Effects 0.000 claims description 13
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 10
- 239000003054 catalyst Substances 0.000 claims description 10
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 5
- 229910002588 FeOOH Inorganic materials 0.000 claims description 4
- 230000003197 catalytic effect Effects 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 150000003863 ammonium salts Chemical class 0.000 claims description 3
- 239000012267 brine Substances 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 2
- 238000005286 illumination Methods 0.000 claims description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 2
- 239000011780 sodium chloride Substances 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 11
- 238000005516 engineering process Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 6
- 239000002957 persistent organic pollutant Substances 0.000 abstract description 5
- 239000002086 nanomaterial Substances 0.000 abstract description 4
- 150000003839 salts Chemical class 0.000 abstract description 3
- 150000001875 compounds Chemical class 0.000 abstract description 2
- 238000001704 evaporation Methods 0.000 abstract description 2
- 230000008020 evaporation Effects 0.000 abstract description 2
- 238000011084 recovery Methods 0.000 abstract description 2
- 238000011033 desalting Methods 0.000 abstract 1
- 238000004821 distillation Methods 0.000 abstract 1
- BRUFJXUJQKYQHA-UHFFFAOYSA-O ammonium dinitramide Chemical compound [NH4+].[O-][N+](=O)[N-][N+]([O-])=O BRUFJXUJQKYQHA-UHFFFAOYSA-O 0.000 description 37
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 238000013032 photocatalytic reaction Methods 0.000 description 4
- 239000002244 precipitate Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 239000011575 calcium Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 239000012153 distilled water Substances 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000003380 propellant Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 229910052925 anhydrite Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
- 239000003440 toxic substance Substances 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01C—AMMONIA; CYANOGEN; COMPOUNDS THEREOF
- C01C1/00—Ammonia; Compounds thereof
- C01C1/18—Nitrates of ammonium
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage 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
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/048—Purification of waste water by evaporation
-
- 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
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- 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
-
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/722—Oxidation by peroxides
-
- 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
- C02F2101/101—Sulfur compounds
-
- 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
-
- 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
- C02F2101/163—Nitrates
-
- 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
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/34—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32
- C02F2103/36—Nature of the water, waste water, sewage or sludge to be treated from industrial activities not provided for in groups C02F2103/12 - C02F2103/32 from the manufacture of organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/06—Controlling or monitoring parameters in water treatment pH
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/08—Chemical Oxygen Demand [COD]; Biological Oxygen Demand [BOD]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/026—Fenton's reagent
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Inorganic Chemistry (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
A treatment method of ADN production wastewater belongs to the technical field of nano materials and nano materials. The application solves the problem that the existing ADN production wastewater treatment method has poor removal effect of ADN and other energetic compounds and organic matters. The treatment process of ADN production wastewater provided by the invention comprises an ultraviolet photochemical method, a heterogeneous Fenton oxidation method and a distillation desalting method. According to the invention, the ADN production wastewater is accurately treated according to the water quality characteristics, and by combining ultraviolet photochemical and heterogeneous Fenton technologies, organic pollutants in the wastewater are greatly reduced, and simultaneously, the concentration of energetic materials in the wastewater can be completely removed, the treatment effect is greater than the effect of a single ultraviolet photochemical method and a single heterogeneous Fenton oxidation method, and the safety influence of the energetic materials on the subsequent treatment process is eliminated; finally, the evaporation concentration is adopted to realize the resource recovery of the salts.
Description
Technical Field
The invention relates to a treatment method of ADN production wastewater, belonging to the technical field of nano materials and nano materials.
Background
Ammonium Dinitramide (ADN) having the formula NH4N(NO2)2No carbon and chlorine in the molecule, high energy density and high-temp stabilityPreferably, as a propellant, combustion does not produce smoke and is one of the most promising alternative oxidizers in composite propellants. However, the ADN production process generates a large amount of wastewater. The wastewater mainly contains high-concentration inorganic salts such as ammonium nitrate, ammonium sulfate and the like and low-concentration organic pollutants, wherein ADN is a toxic substance, and if proper control measures are not taken, the local environment is seriously polluted.
The existing ADN production wastewater treatment technology mainly comprises a physical treatment technology, a chemical treatment technology and a biological treatment technology. Physical treatment technologies such as adsorption, flocculation and the like are simple and easy to implement and low in cost, but the removal effect on energy-containing compounds such as ADN and the like is poor; the homogeneous Fenton chemical oxidation method has better removal efficiency on organic matters in the wastewater, but has poor ADN oxidative degradation effect and the problem of secondary pollution of iron mud; the biological treatment technology is safe to operate, low in operation cost and capable of realizing complete mineralization of pollutants, but the tolerance degree of microorganisms to ADN is low, when the concentration of residual ADN exceeds 2mg/L, the toxicity inhibition of ADN to the microorganisms is large, the microbial degradation rate is low, and the actual industrial requirements cannot be met. Therefore, it is necessary to provide a method for treating ADN production wastewater, which has simple process and easy operation.
Disclosure of Invention
The invention provides a method for treating ADN production wastewater, aiming at solving the defects of the method for treating the ADN production wastewater.
The technical scheme of the invention is as follows:
a treatment method of ADN production wastewater comprises the following operation steps:
step one, placing ADN production wastewater in a photocatalytic reactor for photochemical pretreatment;
secondly, adding a heterogeneous Fenton catalyst and hydrogen peroxide into the photocatalytic reactor for oxidation treatment;
step three, after the oxidation treatment is finished, Ca (NO) is added into the photocatalytic reactor3)2) Obtaining ammonium nitrate saline water;
and step four, distilling and concentrating the ammonium nitrate brine obtained in the step three to obtain liquid ammonium salt or ammonium nitrate solid.
Preferably: the specific operation process of the step one is as follows: putting ADN production wastewater into a photocatalytic reactor, wherein the total amount of wastewater liquid is not more than 60% of the volume of the photocatalytic reactor; then, the wastewater in the catalytic reactor is subjected to photochemical pretreatment by using ultraviolet light lamp irradiation.
Preferably: the power of the ultraviolet lamp is 10W-1000W.
Preferably: the illumination time of the ultraviolet lamp is 0.5-24 h.
Preferably: the wavelength of the ultraviolet lamp is less than 365 nm.
Preferably: the specific operation process of the second step is as follows: adding a sulfuric acid solution into the photocatalytic reactor subjected to photochemical pretreatment in the first step to adjust the pH range to 3-5, and then adding a heterogeneous Fenton catalyst with the mass fraction of 10%; then adding 30% hydrogen peroxide by mass concentration dropwise within 30min, and continuing to react for 24h after completing dropwise addition of hydrogen peroxide.
Most preferably: the ratio of the amount of hydrogen peroxide added into the 1LADN production wastewater to the COD value of the ADN production wastewater is (0.5-3): 1.
preferably: the heterogeneous Fenton catalyst is Fe2O3、Fe3O4And one or more of FeOOH.
The invention has the following beneficial effects: according to the method, the ADN production wastewater is accurately treated according to the water quality characteristics of ADN production wastewater, and by combining ultraviolet photochemical and heterogeneous Fenton technologies, organic pollutants in the wastewater are greatly reduced, simultaneously, the concentration of energetic materials in the wastewater can be completely removed, the treatment effect is greater than the effect of a single ultraviolet photochemical method and a single heterogeneous Fenton oxidation method, and the safety influence of the energetic materials on the subsequent treatment process is eliminated; finally, the evaporation concentration is adopted to realize the resource recovery of the salts. The process flow is suitable for treating ADN production wastewater with high energy content and high ammonium nitrate content, and has the advantages of simple process, convenient operation, high efficiency, greenness, safety and the like.
Detailed Description
The experimental procedures used in the following examples are conventional unless otherwise specified.
In the embodiment of the invention, the ADN production wastewater is obtained from the near-generation chemical research institute of Western Ann, and the wastewater indexes are as follows: the pH value is 7-9.24; 5 times of chroma; COD 179 mg/L; BOD556.1 mg/L; the ADN concentration was 228 mg/L.
Embodiment mode 1: the process method of the invention treats ADN production wastewater
Firstly, adding ADN production wastewater into a photocatalytic reaction container, wherein the total amount of the wastewater is 200mL, and irradiating the wastewater for 6h by using a 600W ultraviolet lamp with the wavelength of 365nm to obtain photochemical pretreated wastewater, wherein the content of ADN in the wastewater is 1.28 mg/L;
then, dilute sulfuric acid solution is added into the wastewater after photochemical pretreatment to adjust the pH value to 3, and then heterogeneous Fenton catalyst Fe with the mass fraction of 10% is added into a photocatalytic reaction container2O3Then slowly and continuously dropwise adding hydrogen peroxide with the mass-volume concentration of 30%, wherein the ratio of the input amount of the hydrogen peroxide to the COD value in 1L of ADN production wastewater is 1:1, namely 179mg of hydrogen peroxide is added into 1L of ADN production wastewater, the reaction is continuously carried out for 24 hours after the dropwise adding of the hydrogen peroxide is finished, and the heterogeneous Fenton oxidation treatment of the wastewater is finished
Then, 10g of Ca (NO) was added to the photocatalytic reactor3)2To remove SO 42-in the wastewater and remove SO in the wastewater4 2-The precipitate is converted into CaSO4 precipitate to be removed, refined ammonium nitrate water and calcium sulfate solid precipitate are obtained, and the purity of the calcium sulfate solid reaches 99.01 percent;
finally, the refined ammonium nitrate brine is distilled and concentrated, and the distilled water can be used for production as recovered water, and high-concentration liquid ammonium salt can be obtained at the same time.
After ADN production wastewater is treated by the process, the pH of distilled water is 7.1, and the COD: 66mg/L, BOD546mg/L, suspended matter: 0mg/L, color number: 0 time, total phosphorus: 0mg/L, and reaches the wastewater discharge standard (GB 14470.1-2002).
Embodiment mode 2: ADN production wastewater catalytic treatment only by using ultraviolet light
Adding ADN production wastewater into a photocatalytic reaction container, wherein the total amount of the wastewater is 200mL, and the total amount of the wastewater is 6 groups, wherein each group is sequentially irradiated for 6 hours by using 100W, 200W, 400W, 600W, 800W and 1000W ultraviolet lamps with the wavelength of 365nm respectively to obtain 6 groups of wastewater subjected to photochemical pretreatment by using ultraviolet lamps with different powers respectively, and the water quality conditions of the 6 groups of wastewater are as follows:
as can be seen from the above table, the ADN concentration can be significantly reduced only by using the ultraviolet photochemical method, and the degradation effect on organic pollutants in the wastewater is poor.
Embodiment mode 3: ADN production wastewater catalytic treatment only by using heterogeneous Fenton
Adding ADN production wastewater into a photocatalytic reaction container, wherein the total amount of the wastewater is 200mL, the total amount of the wastewater is 3 groups, the pH value of the wastewater is adjusted to 3 in each group, and 10% of heterogeneous Fenton catalyst Fe is added into each group2O3、Fe3O4And FeOOH, then slowly and continuously dropwise adding hydrogen peroxide with the mass-volume concentration of 30% in each group, namely the ratio of the input amount of the hydrogen peroxide to the value of COD in 1L of ADN production wastewater is 1:1, namely 179mg of hydrogen peroxide is added into 1L of ADN production wastewater, and continuously reacting for 24 hours after dropwise adding the hydrogen peroxide is completed, so that 3 groups of wastewater treated by using different heterogeneous Fenton catalysts are respectively obtained, wherein the water quality conditions are as follows:
as can be seen from the above table, the oxidation method only using heterogeneous Fenton catalyst can significantly reduce the concentration of organic matter in the wastewater, and has a poor effect of degrading ADN in the wastewater.
In summary, comparing the specific embodiments 1, 2 and 3, it can be seen that the process method of the present invention performs precise treatment according to the water quality characteristics of the ADN production wastewater, and by combining the ultraviolet photochemical and heterogeneous Fenton technologies, the concentration of energetic materials in the wastewater can be completely removed while the organic pollutants in the wastewater are greatly reduced, and the treatment effect is greater than the effect of using the ultraviolet photochemical method and the heterogeneous Fenton oxidation method alone, thereby eliminating the safety influence of the energetic materials on the subsequent treatment process.
Claims (8)
1. A treatment method of ADN production wastewater is characterized by comprising the following steps: the method comprises the following operation steps:
step one, placing ADN production wastewater in a photocatalytic reactor for photochemical pretreatment;
secondly, adding a heterogeneous Fenton catalyst and hydrogen peroxide into the photocatalytic reactor for oxidation treatment;
step three, after the oxidation treatment is finished, Ca (NO) is added into the photocatalytic reactor3)2) Obtaining ammonium nitrate saline water;
and step four, distilling and concentrating the ammonium nitrate brine obtained in the step three to obtain liquid ammonium salt or ammonium nitrate solid.
2. The method for treating ADN production wastewater according to claim 1, wherein the method comprises the following steps: the specific operation process of the step one is as follows: putting ADN production wastewater into a photocatalytic reactor, wherein the total amount of wastewater liquid is not more than 60% of the volume of the photocatalytic reactor; then, the wastewater in the catalytic reactor is subjected to photochemical pretreatment by using ultraviolet light lamp irradiation.
3. The method for treating ADN production wastewater according to claim 2, wherein the method comprises the following steps: the power of the ultraviolet lamp is 10W-1000W.
4. The method for treating ADN production wastewater according to claim 2, wherein the method comprises the following steps: the illumination time of the ultraviolet lamp is 0.5-24 h.
5. The method for treating ADN production wastewater according to claim 2, wherein the method comprises the following steps: the wavelength of the ultraviolet lamp is less than 365 nm.
6. The method for treating ADN production wastewater according to claim 1, wherein the method comprises the following steps: the specific operation process of the second step is as follows: adding a sulfuric acid solution into the photocatalytic reactor subjected to photochemical pretreatment in the first step to adjust the pH range to 3-5, and then adding a heterogeneous Fenton catalyst with the mass fraction of 10%; then slowly dripping 30% hydrogen peroxide by mass concentration within 30min, and continuing to react for 24h after finishing dripping hydrogen peroxide.
7. The ADN production wastewater treatment method according to claim 6, wherein the ADN production wastewater treatment method comprises the following steps: the amount of the added hydrogen peroxide CH2O2The ratio of the COD value of the wastewater to the COD value of the wastewater is (0.5-3): 1.
8. the method for treating ADN production wastewater according to claim 1, wherein the method comprises the following steps: the heterogeneous Fenton catalyst is Fe2O3、Fe3O4And one or more of FeOOH and FeOOH are mixed in any proportion.
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| CN103523852A (en) * | 2012-07-03 | 2014-01-22 | 中北大学 | Photocatalytic degradation of cyclortrimethylenetrinitramine (RDX) explosive wastewater |
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2019
- 2019-10-30 CN CN201911045468.1A patent/CN110606614A/en active Pending
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|---|---|---|---|---|
| CN103523852A (en) * | 2012-07-03 | 2014-01-22 | 中北大学 | Photocatalytic degradation of cyclortrimethylenetrinitramine (RDX) explosive wastewater |
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Application publication date: 20191224 |