CN115140878A - System and method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ - Google Patents
System and method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ Download PDFInfo
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- CN115140878A CN115140878A CN202210857978.4A CN202210857978A CN115140878A CN 115140878 A CN115140878 A CN 115140878A CN 202210857978 A CN202210857978 A CN 202210857978A CN 115140878 A CN115140878 A CN 115140878A
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- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 139
- 150000001875 compounds Chemical class 0.000 title claims abstract description 123
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 238000011065 in-situ storage Methods 0.000 title claims abstract description 30
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- 238000005265 energy consumption Methods 0.000 title claims abstract description 21
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 101
- 239000001257 hydrogen Substances 0.000 claims abstract description 80
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 80
- 229910000510 noble metal Inorganic materials 0.000 claims abstract description 80
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 62
- 239000001301 oxygen Substances 0.000 claims abstract description 62
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 62
- 239000010865 sewage Substances 0.000 claims abstract description 42
- 239000012528 membrane Substances 0.000 claims abstract description 35
- 239000012266 salt solution Substances 0.000 claims abstract description 29
- 238000000034 method Methods 0.000 claims abstract description 20
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 20
- 230000003647 oxidation Effects 0.000 claims abstract description 19
- 150000002431 hydrogen Chemical class 0.000 claims abstract description 15
- 238000006555 catalytic reaction Methods 0.000 claims abstract description 13
- 230000002829 reductive effect Effects 0.000 claims abstract description 13
- 239000003344 environmental pollutant Substances 0.000 claims description 30
- 231100000719 pollutant Toxicity 0.000 claims description 30
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 20
- 238000001514 detection method Methods 0.000 claims description 18
- 238000005286 illumination Methods 0.000 claims description 12
- 230000014759 maintenance of location Effects 0.000 claims description 10
- 229910052763 palladium Inorganic materials 0.000 claims description 10
- 230000035484 reaction time Effects 0.000 claims description 10
- 239000000356 contaminant Substances 0.000 claims description 9
- 238000007599 discharging Methods 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- 230000001590 oxidative effect Effects 0.000 claims description 6
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 230000001276 controlling effect Effects 0.000 claims description 5
- 239000012510 hollow fiber Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 4
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 4
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 3
- 238000012544 monitoring process Methods 0.000 claims description 3
- 229910052697 platinum Inorganic materials 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- 239000010948 rhodium Substances 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052707 ruthenium Inorganic materials 0.000 claims description 3
- 239000010970 precious metal Substances 0.000 claims 4
- 239000002351 wastewater Substances 0.000 claims 1
- 230000015556 catabolic process Effects 0.000 abstract description 9
- 238000006731 degradation reaction Methods 0.000 abstract description 9
- SNGREZUHAYWORS-UHFFFAOYSA-N perfluorooctanoic acid Chemical compound OC(=O)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F SNGREZUHAYWORS-UHFFFAOYSA-N 0.000 description 36
- 238000006115 defluorination reaction Methods 0.000 description 18
- 239000000243 solution Substances 0.000 description 17
- UQSQSQZYBQSBJZ-UHFFFAOYSA-N fluorosulfonic acid Chemical compound OS(F)(=O)=O UQSQSQZYBQSBJZ-UHFFFAOYSA-N 0.000 description 16
- 239000000126 substance Substances 0.000 description 9
- MUJIDPITZJWBSW-UHFFFAOYSA-N palladium(2+) Chemical compound [Pd+2] MUJIDPITZJWBSW-UHFFFAOYSA-N 0.000 description 6
- 241000282414 Homo sapiens Species 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- -1 Perfluoro compounds Chemical class 0.000 description 3
- 230000036541 health Effects 0.000 description 3
- 238000005984 hydrogenation reaction Methods 0.000 description 3
- 239000008239 natural water Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 231100000053 low toxicity Toxicity 0.000 description 2
- 239000002957 persistent organic pollutant Substances 0.000 description 2
- 238000003786 synthesis reaction Methods 0.000 description 2
- 206010007269 Carcinogenicity Diseases 0.000 description 1
- 206010074268 Reproductive toxicity Diseases 0.000 description 1
- 238000001994 activation Methods 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000007670 carcinogenicity Effects 0.000 description 1
- 231100000260 carcinogenicity Toxicity 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 description 1
- 231100000372 reproductive toxicity Toxicity 0.000 description 1
- 230000007696 reproductive toxicity Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- 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
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B15/00—Peroxides; Peroxyhydrates; Peroxyacids or salts thereof; Superoxides; Ozonides
- C01B15/01—Hydrogen peroxide
- C01B15/029—Preparation from hydrogen and oxygen
-
- 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
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- 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
- C02F2101/30—Organic compounds
- C02F2101/36—Organic compounds containing halogen
-
- 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
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
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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)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention provides a system and a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, wherein the method comprises the following steps: s1, introducing a noble metal salt solution into a reactor main body, opening a hydrogen gas supply unit, and reducing and loading noble metals on the surface of a membrane module under the condition of hydrogen gas supply pressure; s2, introducing the perfluorinated compound sewage containing oxygen into the reactor main body, keeping the hydrogen supply unit in an open state, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in the water into hydrogen peroxide; and S3, opening the ultraviolet irradiation unit, and under the ultraviolet irradiation, generating hydroxyl radicals by using the hydrogen peroxide to oxidize and decompose the defluorinated compound. The method couples the hydrodefluorination with the photochemical oxidation, so that the safe and harmless degradation of the perfluorinated compounds can be realized, the hydrogen peroxide can be continuously produced, and the operation cost and potential safety hazards are further reduced.
Description
Technical Field
The invention relates to the technical field of environmental protection, in particular to a system and a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
With the continuous advance of industrialization and urbanization, a large amount of artificially synthesized chemical substances are widely used and enter the natural environment, and the wide attention of people on ecological safety and human health is aroused. Perfluoro compounds, as a synthetic material having excellent waterproof properties and chemical stability, are widely used in industrial production and manufacture of household products, resulting in their inevitable discharge into sewage and natural water. Research shows that the concentration of the perfluorinated compounds in the natural water body is very high. Because the perfluorinated compounds have stable structures and are difficult to oxidize and biodegrade, the perfluorinated compounds cannot be effectively removed by the traditional sewage treatment process, so that the concentration of the perfluorinated compounds in the environment is further improved. Meanwhile, the perfluorinated compounds are easily enriched by organisms, can be transferred to higher-level vegetative organisms and human beings through food chains and organism amplification, and bring potential hazards to human health and ecological safety, such as immune toxicity, reproductive toxicity, carcinogenicity and the like. Therefore, the key to guarantee the water environment safety and human health is to ensure the effective removal of the perfluorinated compounds in the natural water body.
At present, the hydrodefluorination method has the advantages of mild reaction conditions, simplicity in operation, no secondary pollution, convenience in subsequent treatment and the like, and is considered to be a promising treatment method for the perfluorinated compounds. Among them, noble metals are often used in hydrodefluorination because of their strong ability to adsorb and desorb hydrogen. Because the gas mass transfer is limited, hydrogen needs to be continuously introduced in the existing hydrogenation defluorination reaction process, accurate hydrogen supply cannot be realized, and meanwhile, serious potential safety hazard is brought. Membrane-supported noble metal reactors can solve these disadvantages: noble metal is loaded on the surface of the hollow fiber membrane, and hydrogen is spontaneously transferred from the membrane to the noble metal on the surface of the membrane under the action of pressure to carry out hydrodefluorination reaction. However, although hydrodefluorination can be effective in reductive defluorination of perfluorinated compounds, it is difficult to further degrade the defluorinated product and thus may still pose potential risks to the environment.
In addition, the photochemical oxidation technology combining ultraviolet light and hydrogen peroxide solution is another green and safe method for removing organic pollutants. Under the irradiation of ultraviolet light, the hydrogen peroxide generates hydroxyl free radicals to promote the degradation of organic pollutants. However, this method is not excellent in the removal efficiency of the perfluoro compound due to the structural stability of the perfluoro compound, but exhibits excellent degradation efficiency for the defluorinated product. Meanwhile, the method needs to continuously add the hydrogen peroxide, so that the cost is greatly increased, and the potential safety hazard is increased. In recent years, noble metals have been reported to catalyze the direct synthesis of hydrogen peroxide from hydrogen and oxygen, and are considered to be an excellent in situ synthesis technique for hydrogen peroxide. Therefore, if the hydrodefluorination and the photochemical oxidation are coupled, not only can the safe and harmless degradation of the perfluorinated compounds be realized, but also the hydrogen peroxide can be continuously produced, and the operation cost and the potential safety hazard are further reduced.
Disclosure of Invention
The invention provides a system and a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which are used for solving the problems in the background art.
In order to solve the technical problems, the technical scheme adopted by the invention is as follows:
a system for low energy consumption production of hydrogen peroxide and in situ removal of perfluorinated compounds from water comprising:
a reactor body;
a membrane module disposed inside the reactor body;
a hydrogen gas supply unit communicated with the membrane module for supplying hydrogen gas to the reactor main body;
the noble metal salt solution supply unit is communicated with the reactor main body and is used for supplying the noble metal salt solution to the reactor main body, and noble metals in the noble metal salt solution are reduced and loaded on the surface of the membrane module under the action of hydrogen supplied by the hydrogen supply unit;
the water supply unit is communicated with the reactor main body and is used for supplying perfluorinated compound sewage containing oxygen to the interior of the reactor main body, under the catalysis of noble metal and hydrogen, the perfluorinated compound is reduced into a defluorinated compound, and the dissolved oxygen in the water body is reduced into hydrogen peroxide;
the ultraviolet light irradiation unit is arranged in the reactor main body and is used for emitting ultraviolet light, generating hydroxyl free radicals from hydrogen peroxide and oxidizing and decomposing a defluorinated compound;
and the water outlet unit is communicated with the reactor main body and is used for discharging the treated perfluorinated compound sewage.
Further optimize technical scheme, the water supply unit includes:
the water inlet tank is communicated with the reactor main body through a water inlet pipe; a water inlet valve is arranged on the water inlet pipe;
and the dissolved oxygen regulator is arranged in the water inlet tank and is used for regulating the dissolved oxygen concentration of the perfluorinated compound sewage in the water inlet tank.
Further optimizing the technical scheme, a pollutant detection unit for detecting the concentration of the perfluorinated compounds in the discharged sewage is further arranged on the water outlet unit.
Further optimize technical scheme, still include:
the control unit is used for dynamically adjusting the hydrogen supply pressure, the dissolved oxygen concentration of the perfluorinated compound sewage and the ultraviolet light illumination intensity according to the monitored concentration of the perfluorinated compound so as to ensure that the hydrodefluorination rate is matched with the photochemical oxidation rate; the output of pollutant detecting element is connected in the input of control unit, and the controlled end of hydrogen gas supply unit, dissolved oxygen regulator and ultraviolet irradiation unit is connected respectively in the output of control unit.
Further optimizing the technical scheme, the membrane module is a nonporous hollow fiber membrane.
A method for low energy production of hydrogen peroxide and in situ removal of perfluorinated compounds in water based on said low energy production of hydrogen peroxide and in situ removal of perfluorinated compounds in water system comprising the steps of:
s1, introducing a noble metal salt solution into a reactor main body, opening a hydrogen gas supply unit, and reducing and loading noble metals on the surface of a membrane module under the condition of hydrogen gas supply pressure;
s2, introducing the perfluorinated compound sewage containing oxygen into the reactor main body, keeping the hydrogen supply unit in an open state, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in the water into hydrogen peroxide;
s3, opening the ultraviolet irradiation unit, and under the irradiation of ultraviolet light, generating hydroxyl radicals by hydrogen peroxide to oxidize and decompose the defluorinated compound;
and S4, discharging the treated perfluorinated compound sewage through a water outlet unit.
Further optimizing the technical scheme, the method also comprises the following steps:
and S5, the pollutant detection unit detects the pollutant concentration in the reactor main body in real time and feeds monitoring information back to the control unit, the control unit controls the hydrogen supply unit to dynamically adjust the hydrogen pressure, controls the ultraviolet lamp to dynamically adjust the illumination intensity, and ensures that the hydrodefluorination rate is matched with the photochemical oxidation rate.
According to the further optimized technical scheme, before the step S2 is carried out and/or in the step S2, the dissolved oxygen concentration of the perfluorinated compound sewage in the water inlet tank is adjusted by controlling the dissolved oxygen adjusting instrument, so that the dissolved oxygen concentration of the perfluorinated compound sewage in the reactor main body is adjusted.
Further optimizing the technical scheme, further comprising at least one of the following technical features:
1a) In step S1, the noble metal in the noble metal salt solution is palladium, platinum, rhodium or ruthenium;
1b) In the step S1, the concentration of the noble metal salt solution is 0.1-10 mM;
1c) In the step S1, the pH value of the noble metal salt solution is 3-8;
1d) In the step S1, the gas supply pressure of the hydrogen is 1-20 psig;
1e) In the step S1, the reaction time is 4-12 h;
2a) In the step S2, the dissolved oxygen concentration of the inlet water is 0-42 ppm;
2b) In step S2, the perfluorinated pollutants in the perfluorinated compound sewage comprise one or more of any perfluorinated and/or polyfluorinated organic matters;
2c) In the step S2, the gas supply pressure of the hydrogen is 1-20 psig;
2d) In the step S2, the retention time of the perfluorinated compound sewage containing oxygen is 4-24 h;
3a) In the step S3, the wavelength of the ultraviolet light irradiation unit is 100-400 nm;
3b) In step S3, the light intensity of the ultraviolet light irradiation unit is 50 to 900lumen.
By adopting the technical scheme, the invention has the beneficial effects that:
1. the invention couples the hydrogenation defluorination and the photochemical oxidation, thereby not only realizing the safe and harmless degradation of the perfluorinated compounds, but also continuously producing the hydrogen peroxide, and further reducing the operation cost and the potential safety hazard.
2. The invention is an integrated technology, is provided with an automatic control system, realizes the matching of the hydrodefluorination rate and the photochemical oxidation rate, thereby realizing the complete degradation of the perfluorinated compounds, and has the advantages of simple and convenient operation, high automation degree and the like.
3. In the system, the noble metal not only can provide catalytic sites in the hydrodefluorination stage, but also can be used for catalytically reducing oxygen with hydrogen into hydrogen peroxide and providing the hydrogen peroxide in situ for photochemical oxidation reaction.
4. Compared with the traditional biological treatment and advanced oxidation treatment methods, the method has the advantages of high degradation rate, high removal efficiency, low toxicity of effluent products and the like. The method has the advantages of high degradation rate of perfluorinated compounds, removal rate of more than or equal to 90 percent, low toxicity of effluent products, hydrogen utilization rate of more than or equal to 99 percent, no need of adding hydrogen peroxide and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of the system for low energy consumption hydrogen peroxide production and in situ removal of perfluorinated compounds from water according to the present invention.
Wherein: 1. the device comprises a reactor main body, a membrane module, a hydrogen gas supply unit, a water inlet tank, a dissolved oxygen regulator, a water inlet tank, a hydrogen gas supply unit, a ultraviolet lamp, a water inlet tank, a dissolved oxygen regulator, a pollutant detection unit, a pollutant control unit and a control unit, wherein the membrane module 2 is connected with the hydrogen gas supply unit 3 through the water inlet tank, and the dissolved oxygen regulator is connected with the pollutant detection unit 8 through the control unit.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings 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 of the 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.
A system for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ is shown in figure 1 and comprises a reactor body 1, a membrane module 2, a hydrogen gas supply unit 3, a noble metal salt solution supply unit, a water supply unit, an ultraviolet light irradiation unit and a water outlet unit.
The membrane module 2 is arranged inside the reactor main body 1 and is arranged along the inner side wall of the reactor main body 1, so that the introduced perfluorinated compound sewage can be ensured to pass through the membrane module 2. The membrane module 2 is a nonporous hollow fiber membrane, more specifically, a nonporous hollow fiber membrane made of PE, PP or other materials, preferably a PE membrane.
The hydrogen supply unit 3 communicates with the membrane module 2, and supplies hydrogen to the reactor main body 1.
The upper end and the lower end of the hydrogen supply unit 3 are ventilated, and compared with the condition that one end is ventilated with hydrogen, the hydrogen is distributed more uniformly in the membrane component 2.
The noble metal salt solution supply unit is communicated with the reactor main body 1 and is used for supplying the noble metal salt solution to the reactor main body 1, and the noble metal in the noble metal salt solution is reduced and loaded on the surface of the membrane module 2 under the action of the hydrogen supplied by the hydrogen supply unit 3.
The water supply unit is communicated with the reactor main body 1 and is used for supplying perfluorinated compound sewage containing oxygen to the interior of the reactor main body 1, and under the catalysis of noble metal and hydrogen, perfluorinated compounds are reduced into defluorinated compounds, and dissolved oxygen in water is reduced into hydrogen peroxide.
The water supply unit comprises a water inlet tank 5 and a dissolved oxygen regulator 6.
The water inlet tank 5 is communicated with the reactor main body 1 through a water inlet pipe, a water inlet valve is arranged on the water inlet pipe, and the on-off of the water inlet pipe is controlled by controlling the water inlet valve; the water inlet valve can also be a flow regulating valve for regulating the size of inlet water flow.
The dissolved oxygen regulator 6 is arranged in the water inlet tank 5 and is used for regulating the dissolved oxygen concentration of the perfluorinated compound sewage in the water inlet tank 5.
The ultraviolet light irradiation unit is disposed inside the reactor body 1, and emits ultraviolet light to generate hydroxyl radicals from hydrogen peroxide and oxidize and decompose the defluorinated compound.
The ultraviolet irradiation unit is an ultraviolet lamp 4, and the ultraviolet lamp 4 is arranged at the center inside the reactor main body 1 to ensure the uniform transmission of ultraviolet light.
The water outlet unit is communicated with the reactor main body 1 and is used for discharging the treated perfluorinated compound sewage. The water outlet unit comprises a water outlet pipeline and a water outlet valve.
The water supply unit in the present invention is disposed below the side of the reactor main body 1, and the water discharge unit is disposed above the side of the reactor main body 1. The perfluorinated compound sewage enters from the lower end of the reactor main body 1, and flows out from the upper end.
And a pollutant detection unit 7 is also arranged on the water outlet unit, and the pollutant detection unit 7 is used for detecting the concentration of the perfluorinated compounds in the discharged sewage.
However, hydrodefluorination depends on reducing hydrogen, while photochemical oxidation depends on hydroxyl radicals, and how to match the generation rates of the two so as to ensure efficient degradation efficiency remains to be further studied. Meanwhile, a plurality of uncertain factors exist in the operation and control of the system, and the solution is urgently needed to be overcome. In order to solve the technical problem, the invention is also provided with a control unit 8. The control unit 8 is respectively connected with the hydrogen gas supply unit 3, the ultraviolet lamp 4 and the pollutant detection unit 7, specifically, the output end of the pollutant detection unit 7 is connected with the input end of the control unit 8, and the controlled ends of the hydrogen gas supply unit 3, the dissolved oxygen regulator 6 and the ultraviolet irradiation unit are respectively connected with the output end of the control unit 8.
The control unit 8 in the invention is used for dynamically adjusting the hydrogen supply pressure, the dissolved oxygen concentration of the perfluorinated compound sewage and the ultraviolet light illumination intensity according to the monitored concentration of the perfluorinated compound, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
A process for the low energy production of hydrogen peroxide and for the in situ removal of perfluorinated compounds in water based on a system for the low energy production of hydrogen peroxide and for the in situ removal of perfluorinated compounds in water comprising the steps of:
s1, introducing a noble metal salt solution into a reactor main body 1, wherein the noble metal in the noble metal salt solution is palladium, platinum, rhodium or ruthenium, the concentration of the noble metal salt solution is 0.1-10 mM, and the pH value of the noble metal salt solution is 3-8. And opening the hydrogen supply unit 3, reducing and loading the noble metal on the surface of the membrane component 2 under the condition of hydrogen supply pressure, wherein the hydrogen supply pressure is 1-20 psig, and the reaction time is 4-12 h.
Preferably, in step S1, the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH of the solution is 7; hydrogen feed pressure was 10psig; the reaction time was 8h.
And S2, before the step S2 and/or during the step S2, controlling the dissolved oxygen regulator 6 to regulate the dissolved oxygen concentration of the perfluorinated compound sewage in the water inlet tank 5, wherein the dissolved oxygen concentration of the inlet water is 0-42 ppm, and further regulating the dissolved oxygen concentration of the perfluorinated compound sewage in the reactor main body 1. Introducing the perfluorinated compound sewage containing oxygen into the reactor main body 1, keeping the hydrogen gas supply unit 3 in an open state, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen gas, and reducing the dissolved oxygen in the water body into hydrogen peroxide, wherein the supply pressure of the hydrogen gas is 1-20 psig.
Perfluorinated contaminants in perfluorinated compounds sewage include, among others, one or more of any perfluorinated and/or polyfluorinated organics, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like. The retention time of the perfluorinated compound sewage containing oxygen is 4-24 h.
Preferably, in step S2, the concentration of the dissolved oxygen in the inlet water is 40ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time is 4h.
And S3, opening the ultraviolet irradiation unit, and under the ultraviolet irradiation, generating hydroxyl free radicals by using hydrogen peroxide to oxidize and decompose the defluorinated compound.
The wavelength of the ultraviolet light irradiation unit is 100-400 nm; the light intensity of the ultraviolet irradiation unit is 50-900 lumen.
Preferably, in step S3, the ultraviolet lamp wavelength is 254nm; the ultraviolet lamp intensity was 500lumen.
And S4, discharging the treated perfluorinated compound sewage through a water outlet unit.
S5, the pollutant detection unit 7 detects the pollutant concentration in the reactor main body 1 in real time and feeds monitoring information back to the control unit 8, the control unit 8 controls the hydrogen supply unit 3 to dynamically adjust the hydrogen pressure, controls the ultraviolet lamp 4 to dynamically adjust the illumination intensity, and ensures that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Example 1
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 7; hydrogen feed pressure was 10psig; the reaction time was 8h.
S2, controlling a dissolved oxygen regulator 6 to regulate the dissolved oxygen of the perfluorinated compound sewage in the water inlet tank 5, then introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen gas supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing the dissolved oxygen in the water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 40ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time is 12h.
S3, turning on the ultraviolet lamp 4, under the irradiation of ultraviolet light, generating hydroxyl radicals by hydrogen peroxide, and oxidizing and decomposing the defluorinated compound; the wavelength of the ultraviolet lamp is 254nm; the ultraviolet lamp light intensity is 500lumen.
S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Under the working condition, the concentration of the produced hydrogen peroxide can reach 5ppm, the removal rate of the PFOA reaches 0.088hr < -1 > and the defluorination rate of the PFOA reaches 3.6uM/h; compared with other full-fluorine compound physical and chemical treatment systems (such as a plasma excitation process and a persulfate activation process), by adopting the method, the removal rate of the full-fluorine compound is improved from 60-70% to 93%, and the defluorination rate is improved from less than 10% to 64%; the gas utilization rate is improved from 38.9 percent to 99 percent; the treatment time was reduced from 16h to 12h.
Example 2
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 3; hydrogen feed pressure was 10psig; the reaction time was 8h.
S2, introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in a water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 0ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time is 10h.
S3, the ultraviolet lamp 4 is not used for irradiation in the embodiment, the wavelength of the ultraviolet lamp is 0nm, and the light intensity of the ultraviolet lamp is 0lumen.
S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Under the working condition, the concentration of the produced hydrogen peroxide is 0ppm, the PFOA removal rate reaches 0.078hr-1, the PFOA defluorination rate reaches 1.9uM/h, and the PFOA defluorination rate removal rate is 68 percent.
Example 3
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 8; hydrogen gas supply pressure was 10psig; the reaction time was 8h.
S2, introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in a water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 8ppm; the perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organics, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time is 24h.
S3, the ultraviolet lamp 4 is not used for irradiation in the embodiment, the wavelength of the ultraviolet lamp is 0nm, and the light intensity of the ultraviolet lamp is 0lumen.
And S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, so that the matching of the hydrogenation defluorination rate and the photochemical oxidation rate is ensured.
Under the working condition, the concentration of the produced hydrogen peroxide is 2ppm, the removal rate of the PFOA reaches 0.066hr-1, the defluorination rate of the PFOA reaches 2.3uM/h, and the defluorination rate of the PFOA reaches 75 percent.
Example 4
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 7; hydrogen feed pressure was 10psig; the reaction time was 8h.
S2, introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in a water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 40ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time was 12h.
S3, turning on the ultraviolet lamp 4, under the irradiation of ultraviolet light, generating hydroxyl radicals by hydrogen peroxide, and oxidizing and decomposing the defluorinated compound; the wavelength of the ultraviolet lamp is 100nm; the UV lamp intensity was 50lumen.
S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Under the working condition, the concentration of the produced hydrogen peroxide is 5ppm, the removal rate of the PFOA reaches 0.066hr-1, the defluorination rate of the PFOA reaches 2.4uM/h, and the defluorination rate of the PFOA reaches 76 percent.
Example 5
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 7; hydrogen feed pressure was 10psig; the reaction time was 8h.
S2, introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in a water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 8ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time is 12h.
S3, turning on the ultraviolet lamp 4, under the irradiation of ultraviolet light, generating hydroxyl radicals by hydrogen peroxide, and oxidizing and decomposing the defluorinated compound; the wavelength of the ultraviolet lamp is 254nm; the ultraviolet lamp has a light intensity of 100lumen.
S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Under the working condition, the concentration of the produced hydrogen peroxide is 2ppm, the removal rate of the PFOA reaches 0.083hr-1, the defluorination rate of the PFOA reaches 2.7uM/h, and the defluorination rate of the PFOA reaches 85 percent.
Example 6
The embodiment provides a method for producing hydrogen peroxide with low energy consumption and removing perfluorinated compounds in water in situ, which comprises the following specific steps:
s1, introducing a noble metal salt solution into a reactor main body 1, opening a hydrogen gas supply unit 3, and reducing and loading noble metals on the surface of a membrane module 2 under the condition of hydrogen gas supply pressure. Wherein the noble metal is palladium; the concentration of the noble metal solution is 0.2mM; the pH value of the noble metal solution is 7; hydrogen feed pressure was 10psig; the reaction time was 8h.
S2, introducing the perfluorinated compound sewage into the reactor main body 1, opening the hydrogen supply unit 3, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in a water body into hydrogen peroxide; the concentration of dissolved oxygen in the inlet water is 40ppm; perfluorinated contaminants include one or more of any perfluorinated and/or polyfluorinated organic substance, such as perfluorooctanoic acid (PFOA), perfluorosulfonic acid (PFOS), and the like; hydrogen feed pressure was 20psig; the hydraulic retention time was 12h.
S3, turning on the ultraviolet lamp 4, and under the irradiation of ultraviolet light, oxidizing and decomposing the defluorinated compound by using the hydrogen peroxide to generate hydroxyl radicals; the wavelength of the ultraviolet lamp is 254nm; the ultraviolet lamp has a light intensity of 100lumen.
S4, detecting the concentration of the pollutants in the reactor main body 1 in real time through the control unit 8 and the pollutant detection unit 7, dynamically adjusting the hydrogen pressure by using the hydrogen supply unit 3, and dynamically adjusting the illumination intensity by using the ultraviolet lamp 4, thereby ensuring that the hydrodefluorination rate is matched with the photochemical oxidation rate.
Under the working condition, the concentration of the produced hydrogen peroxide is 5ppm, the removal rate of the PFOA reaches 0.089hr < -1 > and the defluorination rate of the PFOA reaches 3.4uM/h, and the defluorination rate of the PFOA reaches 89 percent.
Comparative tables for examples 1 to 6 are as follows:
| example 1 | Example 2 | Example 3 | Example 4 | Example 5 | Example 6 | |
| Catalyst and process for preparing same | Palladium (II) | Palladium (II) | Palladium (II) | Palladium (II) | Palladium (II) | Palladium (II) |
| Hydrogen pressure (psig) | 20 | 20 | 20 | 20 | 20 | 20 |
| Dissolved oxygen (ppm) | 40 | 0 | 8 | 40 | 8 | 40 |
| Ultraviolet wavelength (nm) | 254 | 0 | 0 | 100 | 254 | 254 |
| Intensity of ultraviolet light | 500 | 0 | 0 | 50 | 100 | 100 |
| Hydrogen peroxide concentration (ppm) | 5 | 0 | 2 | 5 | 2 | 5 |
| PFOA removal Rate (hr-1) | 0.088 | 0.078 | 0.066 | 0.074 | 0.083 | 0.089 |
| PFOA defluorination rate (uM/h) | 3.6 | 1.9 | 2.3 | 2.4 | 2.7 | 3.4 |
| PFOA defluorination rate (%) | 93 | 68 | 75 | 76 | 85 | 89 |
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. A system for the low energy production of hydrogen peroxide and for in situ removal of perfluorinated compounds from water, comprising:
a reactor body (1);
a membrane module (2) disposed inside the reactor main body (1);
a hydrogen gas supply unit (3) which is communicated with the membrane module (2) and is used for supplying hydrogen gas to the reactor main body (1);
a precious metal salt solution supply unit communicated with the reactor main body (1) and used for supplying a precious metal salt solution to the reactor main body (1), wherein the precious metal in the precious metal salt solution is reduced and loaded on the surface of the membrane module (2) under the action of hydrogen supplied by the hydrogen supply unit (3);
the water supply unit is communicated with the reactor main body (1) and is used for providing perfluorinated compound sewage containing oxygen to the interior of the reactor main body (1), under the catalysis of noble metal and hydrogen, perfluorinated compounds are reduced into defluorinated compounds, and oxygen dissolved in water is reduced into hydrogen peroxide;
the ultraviolet light irradiation unit is arranged in the reactor main body (1) and is used for emitting ultraviolet light, generating hydroxyl free radicals from hydrogen peroxide and oxidizing and decomposing a defluorinated compound;
and the water outlet unit is communicated with the reactor main body (1) and is used for discharging the treated perfluorinated compound sewage.
2. The system for low energy production of hydrogen peroxide and in situ removal of perfluorinated compounds from water according to claim 1, wherein said water supply unit comprises:
the water inlet tank (5) is communicated with the reactor main body (1) through a water inlet pipe; a water inlet valve is arranged on the water inlet pipe;
and the dissolved oxygen regulator (6) is arranged in the water inlet tank (5) and is used for regulating the dissolved oxygen concentration of the perfluorinated compound sewage in the water inlet tank (5).
3. The system for low-energy-consumption production of hydrogen peroxide and in-situ removal of perfluorinated compounds in water according to claim 2, wherein the effluent unit is further provided with a contaminant detection unit (7) for detecting the concentration of perfluorinated compounds in the effluent.
4. The low energy consumption system for the production of hydrogen peroxide and in situ removal of perfluorinated compounds from water of claim 3, further comprising:
the control unit (8) is used for dynamically adjusting the hydrogen supply pressure, the dissolved oxygen concentration of the perfluorinated compound sewage and the ultraviolet light illumination intensity according to the monitored concentration of the perfluorinated compound so as to ensure that the hydrodefluorination rate is matched with the photochemical oxidation rate; the output end of the pollutant detection unit (7) is connected to the input end of the control unit (8), and the controlled ends of the hydrogen gas supply unit (3), the dissolved oxygen regulator (6) and the ultraviolet light irradiation unit are respectively connected to the output end of the control unit (8).
5. Low energy consumption system for the production of hydrogen peroxide and in situ removal of perfluorinated compounds from water according to claim 1, wherein the membrane module (2) is a non-porous hollow fiber membrane.
6. Method for the production of hydrogen peroxide with low energy consumption and for the in situ removal of perfluorinated compounds in water, characterized in that it is carried out on the basis of a system for the production of hydrogen peroxide with low energy consumption and for the in situ removal of perfluorinated compounds in water according to any one of claims 1 to 5, comprising the following steps:
s1, introducing a noble metal salt solution into a reactor main body (1), opening a hydrogen gas supply unit (3), and reducing and loading noble metals on the surface of a membrane module (2) under the condition of hydrogen gas supply pressure;
s2, introducing the perfluorinated compound sewage containing oxygen into the reactor main body (1), keeping the hydrogen gas supply unit (3) in an open state, reducing the perfluorinated compound into a defluorinated compound under the catalysis of noble metal and hydrogen, and reducing dissolved oxygen in water into hydrogen peroxide;
s3, opening the ultraviolet irradiation unit, and under the irradiation of ultraviolet light, generating hydroxyl radicals by hydrogen peroxide to oxidize and decompose the defluorinated compound;
and S4, discharging the treated perfluorinated compound sewage through a water outlet unit.
7. The low energy method for producing hydrogen peroxide and for in situ removal of perfluorinated compounds in water according to claim 6, further comprising the steps of:
s5, the pollutant detection unit (7) detects the pollutant concentration in the reactor main body (1) in real time and feeds monitoring information back to the control unit (8), the control unit (8) controls the hydrogen supply unit (3) to dynamically adjust the hydrogen pressure, controls the ultraviolet lamp (4) to dynamically adjust the illumination intensity, and ensures that the hydrodefluorination rate is matched with the photochemical oxidation rate.
8. The method for low energy consumption production of hydrogen peroxide and in-situ removal of perfluorinated compounds in water according to claim 6, wherein the dissolved oxygen concentration of perfluorinated compound wastewater in the water inlet tank (5) and thus in the reactor body (1) is adjusted by controlling the dissolved oxygen regulator (6) before and/or during the step S2.
9. The low energy consumption method for producing hydrogen peroxide and for removing perfluorinated compounds in water in situ according to any one of claims 6 to 8, further comprising at least one of the following technical features:
1a) In the step S1, the noble metal in the noble metal salt solution is palladium, platinum, rhodium or ruthenium;
1b) In the step S1, the concentration of the noble metal salt solution is 0.1-10 mM;
1c) In the step S1, the pH value of the noble metal salt solution is 3-8;
1d) In the step S1, the gas supply pressure of the hydrogen is 1-20 psig;
1e) In the step S1, the reaction time is 4-12 h;
2a) In the step S2, the concentration of dissolved oxygen in the inlet water is 0-42 ppm;
2b) In step S2, the perfluorinated pollutants in the perfluorinated compound sewage comprise one or more of any perfluorinated and/or polyfluorinated organic matters;
2c) In the step S2, the gas supply pressure of the hydrogen is 1-20 psig;
2d) In the step S2, the retention time of the perfluorinated compound sewage containing oxygen is 4-24 h;
3a) In the step S3, the wavelength of the ultraviolet light irradiation unit is 100-400 nm;
3b) In step S3, the light intensity of the ultraviolet light irradiation unit is 50 to 900lumen.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6432376B1 (en) * | 2000-09-05 | 2002-08-13 | Council Of Scientific & Industrial Research | Membrane process for the production of hydrogen peroxide by non-hazardous direct oxidation of hydrogen by oxygen using a novel hydrophobic composite Pd-membrane catalyst |
| US20050025697A1 (en) * | 2003-07-29 | 2005-02-03 | Michael Rueter | Precesses and compositions for direct catalytic hydrogen peroxide production |
| CN101434429A (en) * | 2008-12-12 | 2009-05-20 | 清华大学 | Apparatus and method for processing chlorine-containing organic wastewater by electrochemical reduction and oxidation |
| CN103058319A (en) * | 2012-12-25 | 2013-04-24 | 浙江省环境保护科学设计研究院 | Degradation method of perfluorinated compounds |
| WO2022015462A2 (en) * | 2020-06-17 | 2022-01-20 | Arizona Board Of Regents On Behalf Of Arizona State University | Systems for catalytically removing oxidized contaminants from a fluid and related methods |
-
2022
- 2022-07-20 CN CN202210857978.4A patent/CN115140878A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6432376B1 (en) * | 2000-09-05 | 2002-08-13 | Council Of Scientific & Industrial Research | Membrane process for the production of hydrogen peroxide by non-hazardous direct oxidation of hydrogen by oxygen using a novel hydrophobic composite Pd-membrane catalyst |
| US20050025697A1 (en) * | 2003-07-29 | 2005-02-03 | Michael Rueter | Precesses and compositions for direct catalytic hydrogen peroxide production |
| CN101434429A (en) * | 2008-12-12 | 2009-05-20 | 清华大学 | Apparatus and method for processing chlorine-containing organic wastewater by electrochemical reduction and oxidation |
| CN103058319A (en) * | 2012-12-25 | 2013-04-24 | 浙江省环境保护科学设计研究院 | Degradation method of perfluorinated compounds |
| WO2022015462A2 (en) * | 2020-06-17 | 2022-01-20 | Arizona Board Of Regents On Behalf Of Arizona State University | Systems for catalytically removing oxidized contaminants from a fluid and related methods |
Non-Patent Citations (1)
| Title |
|---|
| 王绍文等: "高浓度有机废水处理技术与工程应用", 华东理工大学出版社, pages: 106 - 304 * |
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