CN112093849A - Ultraviolet light hydrogen peroxide catalytic oxidation device and process thereof - Google Patents
Ultraviolet light hydrogen peroxide catalytic oxidation device and process thereof Download PDFInfo
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- CN112093849A CN112093849A CN202010926878.3A CN202010926878A CN112093849A CN 112093849 A CN112093849 A CN 112093849A CN 202010926878 A CN202010926878 A CN 202010926878A CN 112093849 A CN112093849 A CN 112093849A
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 86
- 230000003647 oxidation Effects 0.000 title claims abstract description 85
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 title claims abstract description 61
- 230000003197 catalytic effect Effects 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000008569 process Effects 0.000 title claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 58
- 239000002351 wastewater Substances 0.000 claims abstract description 33
- 238000002156 mixing Methods 0.000 claims abstract description 31
- 239000003814 drug Substances 0.000 claims abstract description 28
- 239000007788 liquid Substances 0.000 claims abstract description 28
- 238000002347 injection Methods 0.000 claims abstract description 25
- 239000007924 injection Substances 0.000 claims abstract description 25
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 238000003756 stirring Methods 0.000 claims abstract description 8
- 238000004519 manufacturing process Methods 0.000 claims abstract description 7
- 238000001514 detection method Methods 0.000 claims description 4
- 230000014759 maintenance of location Effects 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 238000005086 pumping Methods 0.000 claims description 3
- 230000005284 excitation Effects 0.000 abstract description 5
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000593 degrading effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 239000000126 substance Substances 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000000354 decomposition reaction Methods 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 230000000149 penetrating effect Effects 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- QMQXDJATSGGYDR-UHFFFAOYSA-N methylidyneiron Chemical compound [C].[Fe] QMQXDJATSGGYDR-UHFFFAOYSA-N 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000001699 photocatalysis Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 208000005156 Dehydration Diseases 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000010405 anode material Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000012668 chain scission Methods 0.000 description 1
- 238000009388 chemical precipitation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 235000011194 food seasoning agent Nutrition 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 150000003467 sulfuric acid derivatives Chemical class 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 238000004065 wastewater treatment 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
- 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/725—Treatment of water, waste water, or sewage by oxidation by catalytic oxidation
-
- 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
- C02F2101/34—Organic compounds containing oxygen
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention relates to an ultraviolet light hydrogen peroxide catalytic oxidation device and a process thereof, and the ultraviolet light hydrogen peroxide catalytic oxidation device comprises a medicine mixing tank communicated with an MBR water outlet, wherein a stirring device is arranged in the medicine mixing tank, and one side of the upper part of the medicine mixing tank is provided with a liquid injection port for adding hydrogen peroxide; a pipeline communicated ultraviolet oxidation reactor is arranged below the medicine mixing tank, a wastewater injection opening is arranged below the ultraviolet oxidation reactor, and a water production outlet is arranged above one side surface of the ultraviolet oxidation reactor, which is opposite to the wastewater injection opening; the water treatment ultraviolet lamp used in the invention adopts ultraviolet light (wavelength of 185-254nm) with high light energy density and higher excitation energy, which is beneficial to generating more hydroxyl radicals in a reaction system, thereby playing a good role in degrading COD. The ultraviolet oxidation reactor is a plug flow reactor, and can continuously feed and discharge water, thereby improving the treatment efficiency.
Description
Technical Field
The invention relates to the technical field of sewage treatment, in particular to an ultraviolet light hydrogen peroxide catalytic oxidation device and a process thereof.
Background
After the wastewater is subjected to biochemical treatment, most of residual COD is organic matters which are difficult to degrade, so that great difficulty is brought to COD degradation, and the COD is difficult to decompose by a conventional method.
The currently common advanced oxidation processes mainly comprise a Fenton oxidation method, an electrocatalytic oxidation method, an iron-carbon micro-electrolysis oxidation method and a UV-AOP (ultraviolet-organic oxygen demand) internal photocatalytic oxidation method, and the technologies are firstly compared.
Photocatalytic oxidation: has the advantages that 1) the reaction condition is mild, the oxidizing ability is strong, and the application range is wide; 2) the treatment process is very clean, other substances cannot be introduced, and secondary pollution cannot be caused; 3) can completely carry organic matters to convert the organic matters into CO2, and has high treatment depth.
But has the disadvantages that 1) the absorption range of ultraviolet light is narrower, and the light energy utilization rate is lower; 2) is not suitable for the wastewater treatment with a plurality of suspended substances and deeper chroma.
Fenton oxidation, the advantage is: 1) can destroy various toxic and harmful organic matters, and has wide application range; 2) simple equipment and low investment cost. The disadvantages are that: 1) the using amount of the medicament is large, and the operating cost is high; 2) the amount of sludge generated by the reaction is large, and the sludge dewatering load is increased; 3) the reaction time is long; 4) the oxidation capability is not strong, and the organic matter which is difficult to degrade can not be treated.
The electrocatalytic oxidation has the advantages that: 1) the equipment is simple, the operation is easy, the control is convenient, and the investment cost is low; 2) different types of organic matter can be destroyed by changing the anode material; 3) heavy metals can be recovered;
the disadvantages are that: 1) the electrode consumption is too large, the current efficiency is low, and the efficiency of the reactor is not high; 2) high energy consumption, high equipment investment and high operating cost.
The iron-carbon micro-electrolysis oxidation has the advantages that: 1) the structure is simple, and the operation is convenient; 2) the range of action organic matters is wide; 3) the coagulation effect is good, and the removal rate of COD is high; 4) can achieve the effect of chemical precipitation dephosphorization and remove heavy metals through reduction reaction.
The disadvantages are that: 1) the reaction rate is slow; 2) after the operation for a period of time, a passive film is formed on the surface of the seasoning, so that the treatment efficiency is reduced; 3) the bed body is easy to harden, causing short circuit and dead zone; 4) the iron and carbon use supplement amount is large; 5) under acidic conditions, the amount of iron filings dissolved out is large, and a large amount of precipitates are generated during neutralization, so that the burden of dehydration treatment is increased.
At present, the ultraviolet light catalytic oxidation technology is emphasized, and the basic principle is that when R molecules in sewage absorb light (ultraviolet light) rich in enough energy, the R molecules are converted into excited state R molecules with higher energy level, the increased energy is equivalent to the input photon energy, and the R molecules are converted into excited state molecules to generate chain scission more easily. Hydrogen peroxide (H2O2) is photolyzed under irradiation of appropriate wavelengths into strongly oxidizing hydroxyl radicals which react rapidly with organic and inorganic species in water to form inorganic products such as water, sulfates, and the like. The presence of hydroxyl radicals (OH;) can greatly accelerate the process of pollutant decomposition. Therefore, it is not necessary to use a large amount of chemicals. However, the wavelength range of the ultraviolet light is too large, the influence of the wavelength of the ultraviolet light is not researched in the prior art, and the prior ultraviolet light catalytic oxidation technology generally adopts a static treatment method, so that the working efficiency is not high.
Disclosure of Invention
The invention aims to solve the technical problem of providing an ultraviolet light hydrogen peroxide catalytic oxidation device and a process thereof so as to solve the defects in the prior art.
The technical scheme for solving the technical problems is as follows:
an ultraviolet light hydrogen peroxide catalytic oxidation device comprises a medicine mixing tank communicated with an MBR water outlet, wherein a stirring device is arranged in the medicine mixing tank, and one side of the upper part of the medicine mixing tank is provided with a liquid injection port for adding hydrogen peroxide; a pipeline communicated ultraviolet oxidation reactor is arranged below the medicine mixing tank, a wastewater injection opening is arranged below the ultraviolet oxidation reactor, and a water production outlet is arranged above one side surface of the ultraviolet oxidation reactor, which is opposite to the wastewater injection opening; the ultraviolet oxidation reactor is internally provided with a first vertical plate and a second vertical plate in sequence from a wastewater injection port to a drainage outlet, and the interior of the ultraviolet oxidation reactor is divided into a first cavity, a second cavity and a third cavity, wherein the first vertical plate is connected with the bottom of the ultraviolet oxidation reactor, an outlet communicated with the second cavity is arranged above the first vertical plate, the second vertical plate is connected with the top of the ultraviolet oxidation reactor, an outlet communicated with the third cavity is arranged below the second vertical plate, three ultraviolet lamps are vertically arranged in the first cavity, the second cavity and the third cavity respectively, and each ultraviolet lamp is connected with an external controller to control a switch;
furthermore, a first liquid level meter is arranged above the ultraviolet lamps in the first cavity, a second liquid level meter is arranged between the lowest ultraviolet lamp and the middle ultraviolet lamp in the third cavity, and the first liquid level meter and the second liquid level meter are respectively connected with an external controller;
furthermore, two metering pumps which are connected in parallel are arranged between the medicine mixing tank and the ultraviolet oxidation reactor, one of the two metering pumps works normally, and the other metering pump is standby and is connected with an external controller to control a switch;
further, a circulating water outlet is formed in the upper portion of the side face of the ultraviolet oxidation reactor on the same side as the wastewater injection opening, and the circulating water outlet is connected into a pipeline connected with the wastewater injection opening through a pipeline;
further, the circulating water outlet is communicated with a circulating pump and then connected to a pipeline connected with the wastewater injection port through a pipeline;
further, a drainage outlet is formed below a water production outlet of the ultraviolet oxidation reactor, and the drainage outlet is positioned at the bottom of the side surface of the ultraviolet oxidation reactor;
furthermore, the circulating water outlet is connected with a drainage outlet through a pipeline, and an electromagnetic valve control switch is arranged between the circulating water outlet and the drainage outlet;
the invention also provides an ultraviolet light hydrogen peroxide catalytic oxidation process, which specifically comprises the following steps:
1) feeding MBR effluent into a medicine mixing tank, adding hydrogen peroxide in a proportion of 1-5 per mill, and then uniformly mixing by a stirring device;
2) continuously pumping the liquid in the medicine mixing tank into an ultraviolet oxidation reactor by adopting a metering pump, starting an ultraviolet lamp for reaction when the liquid level reaches the required scale, and designing the retention time of the wastewater to be about 2 hours; when the device is used for the first time, water supply is stopped after the liquid level reaches the required scale, the ultraviolet lamp is started to operate for 2 hours, and continuous water inlet is started after the COD of the wastewater in the sampling detection system reaches the standard;
more specifically, the wavelength range of the ultraviolet lamp is between 185 and 255 nm;
more specifically, the ultraviolet oxidation reactor is a plug flow reactor, and can continuously feed and discharge water at a set water inlet and outlet speed, so that the treatment efficiency is improved;
the invention has the beneficial effects that: the water treatment ultraviolet lamp used in the invention adopts ultraviolet light (wavelength of 185-254nm) with high light energy density and higher excitation energy, which is beneficial to generating more hydroxyl radicals in a reaction system, thereby playing a good role in degrading COD. The ultraviolet oxidation reactor is a plug flow reactor, and can continuously feed and discharge water at a set water inlet and outlet speed, so that the treatment efficiency is improved.
Drawings
FIG. 1 is a schematic structural view of the present invention;
the reference numerals are explained below:
1. the device comprises a medicine mixing tank, 2, a stirring device, 3, a liquid injection port, 4, an ultraviolet oxidation reactor, 41, a produced water outlet, 42, a wastewater injection port, 43, a drainage outlet, 44, a first vertical plate, 45, a second vertical plate, 46, an ultraviolet lamp, 47, a first liquid level meter, 48, a second liquid level meter, 49, a circulating water outlet, 5, a metering pump, 6 and a circulating pump;
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, the ultraviolet light hydrogen peroxide catalytic oxidation device comprises a medicine mixing tank 1 communicated with an MBR water outlet, wherein a stirring device 2 is arranged in the medicine mixing tank, and a liquid injection port 3 for adding hydrogen peroxide is formed in one side of the upper part of the medicine mixing tank; a pipeline communicated ultraviolet oxidation reactor 4 is arranged below the medicine mixing tank, a wastewater injection opening is arranged below the ultraviolet oxidation reactor 4, and a water production outlet 41 is arranged above one side surface of the ultraviolet oxidation reactor, which is opposite to the wastewater injection opening; a first vertical plate 44 and a second vertical plate 45 are sequentially arranged in the ultraviolet oxidation reactor from the wastewater injection port 42 to the drainage outlet 43, and the interior of the ultraviolet oxidation reactor is divided into a first cavity, a second cavity and a third cavity, wherein the first vertical plate is connected with the bottom of the ultraviolet oxidation reactor, an outlet communicated with the second cavity is arranged above the first vertical plate, the second vertical plate is connected with the top of the ultraviolet oxidation reactor, an outlet communicated with the third cavity is arranged below the second vertical plate, three ultraviolet lamps 46 are vertically arranged in the first cavity, the second cavity and the third cavity respectively, and each ultraviolet lamp is connected with an external controller to perform control switching;
more specifically, a first liquid level meter 47 is arranged above the ultraviolet lamps in the first cavity, a second liquid level meter 48 is arranged between the ultraviolet lamps at the lowest part and the middle part in the third cavity, and the first liquid level meter and the second liquid level meter are respectively connected with an external controller;
when the specific implementation is carried out, the MBR effluent is metered by a pump and is pumped into a medicine mixing tank, hydrogen peroxide (the proportion is between 1 and 5 permillage, the specific addition amount is determined according to the actual debugging condition) is added in proportion and is uniformly mixed, a metering pump (one is opened and one is prepared, 500L/h) is continuously pumped into an ultraviolet oxidation device, the wastewater enters an ultraviolet oxidation reactor, when a first liquid level meter detects the liquid level, the wastewater is full of the reactor, and a controller controls an ultraviolet lamp to be started to carry out catalytic oxidation reaction; the designed retention time of the wastewater is about 1 h; the device is used for the first time, water supply is stopped after the liquid level reaches the required scale, the ultraviolet lamp is started to operate for 1 hour, and the metering pump is started to continuously feed water after the COD (chemical oxygen demand) of the wastewater in the sampling detection system reaches the standard. When the device stopped operating, discharged through inside water through the drainage export, when the liquid level dropped to the second level timing, the second level gauge can not detect water level signal, and the controller control ultraviolet lamp was closed this moment.
More specifically, two metering pumps 5 connected in parallel are arranged between the medicine mixing tank and the ultraviolet oxidation reactor, one of the two metering pumps works normally, and the other metering pump is standby and is connected with an external controller to control a switch;
more specifically, a circulating water outlet 49 is formed in the upper side of the side face of the ultraviolet oxidation reactor on the same side as the wastewater injection port, and the circulating water outlet is connected to the pipeline connected with the wastewater injection port through a pipeline and is used for carrying out catalytic oxidation on water in the ultraviolet oxidation reactor again so as to improve the decomposition efficiency;
more specifically, the circulating water outlet is communicated with a circulating pump 6 and then connected to a pipeline connected with a wastewater injection port through a pipeline;
in order to achieve a better cleaning effect, a drainage outlet is formed below a water production outlet of the ultraviolet oxidation reactor, and the drainage outlet is positioned at the bottom of the side surface of the ultraviolet oxidation reactor;
more specifically, the circulating water outlet is connected with a drainage outlet through a pipeline, and an electromagnetic valve control switch is arranged between the circulating water outlet and the drainage outlet;
therefore, when the device stops running and needs to exhaust the interior of the ultraviolet oxidation reactor, the electromagnetic valves between the water outlet and the circulating water outlet are opened at the same time, the circulating pump is started, so that the interior water can be exhausted as much as possible, wherein the residual water stored in the first vertical plate can be injected into the ultraviolet oxidation reactor again through the circulating pump when the device is started next time, and the residual water can fully react with hydrogen peroxide conveyed by the chemical mixing tank to carry out catalytic oxidation, so that the problem that residual wastewater is not completely decomposed due to incomplete emptying of the ultraviolet oxidation reactor is solved.
The invention also provides an ultraviolet light hydrogen peroxide catalytic oxidation process, which specifically comprises the following steps:
1) feeding MBR effluent into a medicine mixing tank, adding hydrogen peroxide in a proportion of 1-5 per mill, and then uniformly mixing by a stirring device;
2) continuously pumping the liquid in the medicine mixing tank into an ultraviolet oxidation reactor by adopting a metering pump, starting an ultraviolet lamp for reaction when the liquid level reaches the required scale, and designing the retention time of the wastewater to be about 2 hours; when the device is used for the first time, water supply is stopped after the liquid level reaches the required scale, the ultraviolet lamp is started to operate for 2 hours, and continuous water inlet is started after the COD of the wastewater in the sampling detection system reaches the standard;
more specifically, the wavelength range of the ultraviolet lamp is between 185 and 255 nm;
more specifically, the ultraviolet oxidation reactor is a plug flow reactor, and can continuously feed and discharge water at a set water inlet and outlet speed, so that the treatment efficiency is improved;
the core technology of ultraviolet light catalytic oxidation is composed of a specific ultraviolet light source. The ultraviolet ray is an electromagnetic wave with a wavelength of 100-.
According to an energy equation, ultraviolet light with shorter wavelength has stronger excitation energy, and can more effectively excite molecular bonds to dissociate and release free radicals. Therefore, the low-pressure ultraviolet UV-C (253.7nm) is widely applied in the field of pollutant treatment; while UV-V with shorter wavelength has stronger energy, but has poorer penetrating power, and can only be transmitted in vacuum, so the UV-V cannot be widely applied.
The water treatment ultraviolet lamp used in the invention adopts ultraviolet light (wavelength of 185-254nm) with high light energy density and higher excitation energy, which is beneficial to generating more hydroxyl radicals in a reaction system, thereby playing a good role in degrading COD.
The different decomposition effects brought by ultraviolet rays with different wavelengths are tested under the condition of hydrogen peroxide (5 per mill) with the same concentration; the ultraviolet light with four wave bands is tested from the wavelength of 100nm to the wavelength of 320nm at an interval of 5nm, and different ultraviolet light wavelengths are taken for testing, and the effect of reaching the emission standard within the shortest time (2h) can be achieved when the wavelength is between 185nm and 255nm, wherein the following selected results are introduced as follows:
specific example 1 (ultraviolet lamp 32W, wavelength 185 nm):
specific example 2 (ultraviolet lamp 32W, wavelength 205 nm):
specific example 3 (ultraviolet lamp 32W, wavelength 255 nm):
therefore, the wavelength is 185-255nm, the effect is the highest, and actually, according to an energy equation, the ultraviolet light with shorter wavelength has stronger excitation energy and can more effectively excite the molecular bond to dissociate and release free radicals; therefore, the low-pressure ultraviolet UV-C (253.7nm) is widely applied in the field of pollutant treatment; while UV-V with shorter wavelength has stronger energy, but has poorer penetrating power, and can only be transmitted in vacuum, so the UV-V cannot be widely applied.
When the wavelength of the ultraviolet lamp is between 185nm and 255nm, an optimal matching effect can be achieved between energy density and penetrating power, more hydroxyl free radicals can be generated in the ultraviolet oxidation reactor, and therefore the effect of degrading COD can be achieved well.
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 (10)
1. An ultraviolet light hydrogen peroxide catalytic oxidation device is characterized in that: the device comprises a medicine mixing tank communicated with an MBR water outlet, wherein a stirring device is arranged in the medicine mixing tank, and one side of the upper part of the medicine mixing tank is provided with a liquid injection port for adding hydrogen peroxide; a pipeline communicated ultraviolet oxidation reactor is arranged below the medicine mixing tank, a wastewater injection opening is arranged below the ultraviolet oxidation reactor, and a water production outlet is arranged above one side surface of the ultraviolet oxidation reactor, which is opposite to the wastewater injection opening; inside first riser, the second riser of setting gradually from waste water filling opening to drainage export direction of ultraviolet oxidation reactor, divide into first cavity, second cavity and third cavity with inside, wherein, first riser is connected with ultraviolet oxidation reactor bottom, and first riser top is provided with export UNICOM second cavity, the second riser is connected with ultraviolet oxidation reactor top, and second riser below is provided with export UNICOM third cavity, each is vertical to be provided with three ultraviolet lamp, every inside first cavity, second cavity and the third cavity the ultraviolet lamp is connected with external control ware and is carried out control switch.
2. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 1, characterized in that: in the first cavity, the top of ultraviolet lamp is equipped with first level gauge, in the third cavity, be provided with the second level gauge between the ultraviolet lamp in the below and the centre, first level gauge and second level gauge are connected with external control ware respectively.
3. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 2, characterized in that: two metering pumps connected in parallel are arranged between the medicine mixing tank and the ultraviolet oxidation reactor, one of the two metering pumps works normally, the other metering pump is standby, and the two metering pumps are connected with an external controller to control a switch.
4. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 3, characterized in that: and a circulating water outlet is formed in the upper part of the side surface of the ultraviolet oxidation reactor on the same side as the wastewater injection opening, and the circulating water outlet is connected to the inside of a pipeline connected with the wastewater injection opening through a pipeline.
5. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 4, characterized in that: and the circulating water outlet is communicated with a circulating pump and then connected to a pipeline connected with the wastewater injection port through a pipeline.
6. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 5, characterized in that: and a drainage outlet is formed below a water production outlet of the ultraviolet oxidation reactor, and the drainage outlet is positioned at the bottom of the side surface of the ultraviolet oxidation reactor.
7. The ultraviolet light hydrogen peroxide catalytic oxidation device according to claim 6, characterized in that: the circulating water outlet is connected with the drainage outlet through a pipeline, and an electromagnetic valve control switch is arranged between the circulating water outlet and the drainage outlet.
8. An ultraviolet light hydrogen peroxide catalytic oxidation process is characterized in that: 1) feeding MBR effluent into a medicine mixing tank, adding hydrogen peroxide in a proportion of 1-5 per mill, and then uniformly mixing by a stirring device;
2) continuously pumping the liquid in the medicine mixing tank into an ultraviolet oxidation reactor by adopting a metering pump, starting an ultraviolet lamp for reaction when the liquid level reaches the required scale, and designing the retention time of the wastewater to be about 2 hours; when the device is used for the first time, water supply is stopped after the liquid level reaches the required scale, the ultraviolet lamp is started to operate for 2 hours, and continuous water inlet is started after the COD of the wastewater in the sampling detection system reaches the standard.
9. The ultraviolet light hydrogen peroxide catalytic oxidation process according to claim 8, characterized in that: the wavelength range of the ultraviolet lamp is between 185 and 255 nm.
10. The ultraviolet light hydrogen peroxide catalytic oxidation process according to claim 9, characterized in that: the ultraviolet oxidation reactor is a plug flow reactor, and can continuously feed and discharge water at a set water inlet and outlet speed, so that the treatment efficiency is improved.
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| CN202010926878.3A CN112093849A (en) | 2020-09-09 | 2020-09-09 | Ultraviolet light hydrogen peroxide catalytic oxidation device and process thereof |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470480A (en) * | 1994-05-09 | 1995-11-28 | Eka Nobel, Inc. | Process for treating waste water effluent |
| CN105800731A (en) * | 2016-03-24 | 2016-07-27 | 武汉尚远环保技术有限公司 | Coking wastewater COD removal device |
| CN209143765U (en) * | 2018-11-26 | 2019-07-23 | 大连宇都环境工程技术有限公司 | A kind of ultraviolet collaboration hydrogen peroxide advanced oxidation reaction device |
| CN111484176A (en) * | 2020-05-26 | 2020-08-04 | 清华大学 | Dual-waveband ultraviolet light catalytic advanced oxidation device and process |
-
2020
- 2020-09-09 CN CN202010926878.3A patent/CN112093849A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5470480A (en) * | 1994-05-09 | 1995-11-28 | Eka Nobel, Inc. | Process for treating waste water effluent |
| CN105800731A (en) * | 2016-03-24 | 2016-07-27 | 武汉尚远环保技术有限公司 | Coking wastewater COD removal device |
| CN209143765U (en) * | 2018-11-26 | 2019-07-23 | 大连宇都环境工程技术有限公司 | A kind of ultraviolet collaboration hydrogen peroxide advanced oxidation reaction device |
| CN111484176A (en) * | 2020-05-26 | 2020-08-04 | 清华大学 | Dual-waveband ultraviolet light catalytic advanced oxidation device and process |
Non-Patent Citations (2)
| Title |
|---|
| 侯艳君: "《臭氧/金属氧化物催化降解水中有机物的研究》", 30 June 2013, 黑龙江大学出版社 * |
| 许永艾等: "UV185nm-H2O2组合工艺处理高浓度棘白菌素类抗生素发酵废水", 《化工环保》 * |
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