CN105152429B - A kind of method for efficiently removing Industry Waste organic pollutants - Google Patents
A kind of method for efficiently removing Industry Waste organic pollutants Download PDFInfo
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- CN105152429B CN105152429B CN201510564380.6A CN201510564380A CN105152429B CN 105152429 B CN105152429 B CN 105152429B CN 201510564380 A CN201510564380 A CN 201510564380A CN 105152429 B CN105152429 B CN 105152429B
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- 238000000034 method Methods 0.000 title claims abstract description 37
- 239000002957 persistent organic pollutant Substances 0.000 title claims abstract description 11
- 239000002699 waste material Substances 0.000 title claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 68
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000008246 gaseous mixture Substances 0.000 claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 17
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 14
- 238000005273 aeration Methods 0.000 claims abstract description 12
- 239000011148 porous material Substances 0.000 claims abstract description 5
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- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 20
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 14
- 229910052753 mercury Inorganic materials 0.000 claims description 14
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 12
- 239000010936 titanium Substances 0.000 claims description 12
- 229910052719 titanium Inorganic materials 0.000 claims description 12
- 238000007747 plating Methods 0.000 claims description 9
- 238000009792 diffusion process Methods 0.000 claims description 8
- 230000002035 prolonged effect Effects 0.000 claims description 8
- 230000005611 electricity Effects 0.000 claims description 7
- 238000012546 transfer Methods 0.000 claims description 7
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- HUMNYLRZRPPJDN-UHFFFAOYSA-N benzaldehyde Chemical compound O=CC1=CC=CC=C1 HUMNYLRZRPPJDN-UHFFFAOYSA-N 0.000 claims description 6
- MVPPADPHJFYWMZ-UHFFFAOYSA-N chlorobenzene Chemical compound ClC1=CC=CC=C1 MVPPADPHJFYWMZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000010842 industrial wastewater Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 239000000956 alloy Substances 0.000 claims description 4
- -1 carbon-polytetrafluoroethylene Chemical class 0.000 claims description 4
- HTXDPTMKBJXEOW-UHFFFAOYSA-N dioxoiridium Chemical compound O=[Ir]=O HTXDPTMKBJXEOW-UHFFFAOYSA-N 0.000 claims description 4
- 229910002804 graphite Inorganic materials 0.000 claims description 4
- 239000010439 graphite Substances 0.000 claims description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 claims description 4
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 239000004744 fabric Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- QNGNSVIICDLXHT-UHFFFAOYSA-N para-ethylbenzaldehyde Natural products CCC1=CC=C(C=O)C=C1 QNGNSVIICDLXHT-UHFFFAOYSA-N 0.000 claims description 3
- 238000004065 wastewater treatment Methods 0.000 claims description 3
- 229910000838 Al alloy Inorganic materials 0.000 claims description 2
- 229910000881 Cu alloy Inorganic materials 0.000 claims description 2
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 2
- 229910001069 Ti alloy Inorganic materials 0.000 claims description 2
- 229910003460 diamond Inorganic materials 0.000 claims description 2
- 239000010432 diamond Substances 0.000 claims description 2
- 229910021397 glassy carbon Inorganic materials 0.000 claims description 2
- 229910052741 iridium Inorganic materials 0.000 claims description 2
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 2
- CJTCBBYSPFAVFL-UHFFFAOYSA-N iridium ruthenium Chemical compound [Ru].[Ir] CJTCBBYSPFAVFL-UHFFFAOYSA-N 0.000 claims description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 2
- 229910052703 rhodium Inorganic materials 0.000 claims description 2
- 239000010948 rhodium Substances 0.000 claims description 2
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 2
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- 239000010935 stainless steel Substances 0.000 claims description 2
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 claims 1
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- 239000003344 environmental pollutant Substances 0.000 description 9
- 231100000719 pollutant Toxicity 0.000 description 9
- 238000012360 testing method Methods 0.000 description 8
- 230000000052 comparative effect Effects 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000006229 carbon black Substances 0.000 description 4
- 235000019241 carbon black Nutrition 0.000 description 4
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 3
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
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- 229910021645 metal ion Inorganic materials 0.000 description 1
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- MUBZPKHOEPUJKR-UHFFFAOYSA-N oxalic acid group Chemical group C(C(=O)O)(=O)O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 1
- 238000010525 oxidative degradation reaction Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The present invention relates to a kind of method for efficiently removing Industry Waste organic pollutants, including following operation：Using bottom micro-pore aeration mode, by O2And O3Gaseous mixture is passed through ozone contactor；While being passed through gaseous mixture, staying water is injected into the ozone contactor, hydraulic detention time is 10~20min, exports water body immediately；In the hydraulic detention time：First leading to direct current positioned at the yin, yang electrode both ends of ozone contactor bottom, terminating after being powered, then ultraviolet lighting water jetting body is used in remaining hydraulic detention time.Ultraviolet light, ozone oxidation are combined by method provided by the invention with electrochemical process, rationally limited by the time to three's participation reaction and design parameter, realize the synergy of each factor, while Organic Pollutants In Water degradation rate is improved, significantly improve the mineralization rate of water body, redox ability is strong, and does not need organic carbon source, saves energy resource consumption.
Description
Technical field
This patent is related to field of waste water treatment, and in particular to a kind of side for efficiently removing Industry Waste organic pollutants
Method.
Background technology
In water body, largely existing organic pollution causes huge threat to the living environment of aquatile.And these
Organic matter is due to low concentration, high harm and the feature such as high stability, it is impossible to effectively removed by traditional common process, it is such as difficult
In biodegradation, the traditional materialization in general municipal sewage plant and bioremediation are all difficult by its efficient removal.Cause
This, research for organic pollutant removal method is by one of focus as field of water pollution control.In the prestige constantly aggravated
Under the side of body, the new technique that can effectively remove hardly degraded organic substance in water removal is studied so as to effectively improve drinking water quality, it is right
The sustainable development in China just has extremely important strategic importance.
Prior art discloses a kind of method that ozone oxidation is combined into processing organic micro-pollution material with electrochemical process；
This method passes through the O that in DC electric field, is dissolved in water body2Electrochemical in-situ, which is carried out, in ozone contactor bottom produces H2O2, it is raw
Into H2O2With the O dissolved in solution3Further occur Peroxone reaction, generation with strong oxidizing property hydroxyl radical free radical (
OH), so as to oxidative degradation PPCPs class micropollutants.However, the pollutant kind contained in industrial wastewater is more, content is high, it is difficult to
Comprehensively, thoroughly removed, and substantial amounts of metal ion (such as iron ion), meeting and intermediates in industrial wastewater be present
(such as oxalic acid) forms complex compound, causes organic pollution to be difficult to thoroughly be degraded to harmless CO2。
The content of the invention
The present invention is in order to solve the above problems, there is provided a kind of method for efficiently removing Industry Waste organic pollutants.
The present invention is comprehensively optimized by the way that ultraviolet light, ozone oxidation are combined with electrochemical process to reaction condition, is made
Hydrogen oxide further decomposes the hydroxyl radical free radical for producing non-selectivity oxidation under ultraviolet irradiation, strengthens to hard-degraded substance
Oxidation, meanwhile, ultraviolet in itself can also degradation selectivity Fe3+The complex compound formed with intermediates, reduces it to entering
The influence of one step mineralising, while Organic Pollutants In Water degradation rate is improved, significantly improve Organic Pollutants In Water
Thoroughly it is degraded to harmless CO2Mineralization rate, and save energy resource consumption.
Specifically, method provided by the invention comprises the following steps：Using bottom micro-pore aeration mode, by O3Volume hundred
Divide than the O for 5~10%2And O3Gaseous mixture is passed through ozone contactor；While being passed through gaseous mixture, staying water is injected into institute
Ozone contactor is stated, hydraulic detention time is 10~20min, exports water body immediately, you can；
The O3Mass transfer amount and the ratio between staying water volume be 50~100mg/L；
Before the hydraulic detention time in 40~60% times, in the yin, yang electrode positioned at ozone contactor bottom
Both ends lead to direct current, and cathode terminal current density is 25~40mA/cm2；Terminate after being powered, then in remaining hydraulic detention time
With ultraviolet lighting water jetting body.
Total organic carbon (Total Organic Carbon, TOC) concentration of staying water of the present invention be 1~
50mg/L, pH value are 6~8, and electrical conductivity is more than 700 μ S/cm, Fe2+Concentration is 20~200mg/L；Preferably, the accessing pending water
The TOC concentration of body is 10~30mg/L, and pH value is 6.5~7.5, and electrical conductivity is 1000~8000 μ S/cm, Fe2+Concentration be 50~
150mg/L.TOC source includes nitrobenzene, chlorobenzene and benzaldehyde in the staying water.
O of the present invention3Mass transfer amount and the ratio between staying water volume be preferably 70~80mg/L.Biography of the present invention
Quality refers to gas by the quality of liquid absorption, the conventional method of this area can be used to be detected.
Gaseous mixture of the present invention is preferably prepared by ozone generator.The specific steps prepared using ozone generator
For：By O2It is passed through ozone generator, part O2It is converted into O3, output gas, i.e. O3Percent by volume is 5~10% O2And O3It is mixed
Close gas.O is blasted into ozone contactor3And O2During gaseous mixture, aeration mode is bottom micro-pore aeration, while carries out magnetic agitation,
The aeration flow velocity of the micro-pore aeration is preferably 0.1~0.5L/min.
Hydraulic detention time (Hydraulic Retention Time, HRT) of the present invention refers to that staying water exists
Mean residence time in reactor.In scheme provided by the invention, staying water only needs very short stop in reactor
Stay the time that the efficient removal of organic pollution can be achieved.Specifically, the hydraulic detention time of scheme of the present invention is 10
~20min.
The present invention is had found by many experiments, and ultraviolet light, ozone oxidation are combined with electrochemical process, and to three
The order and time for participating in reaction carry out reasonable distribution, it is possible to achieve the synergy between each factor, can not only improve water
The degradation rate and mineralization rate of organic pollution in body, the security of processing procedure can also be improved, and save energy consumption.Therefore,
The present invention is sequentially carried out logical direct current with ultraviolet light, i.e., successively on the basis of ozone, oxygen mixture is continually fed into
In hydraulic detention time, the direct current of certain current density is first passed through, is terminated after being powered, then a period of time is carried out to water body
Ultraviolet light.In order to realize optimization process effect, the time of the logical direct current is preferably in the hydraulic detention time
Preceding 45~55% time in；Within the conduction time, cathode terminal current density is preferably 32~38mA/cm2, it is further excellent
Elect 32~35mA/cm as2。
In electrode of the present invention：Annode area is 5~20cm2, selected from Pt electrodes, graphite electrode, boron-doped diamond electricity
Pole, Pt/C electrodes, titanium plating ruthenium iridium electrode, titanium plating ruthenium electrode, titanium platinized electrode, titanium-based plating iridium electrode, titanium-based plating rhodium electrode, titanium-based
Plate iridium dioxide electrode, stainless steel electrode, nickel electrode or the alloy electrode containing two or more transition metal；It is described containing two or more
The alloy electrode of transition metal is aluminum alloy anode, titanium alloy electrode, copper alloy electrode or kirsite electrode.The anode is preferred
For 6~10cm of area2Pt plate electrodes.The anode that the present invention uses can reduce the overpotential of reaction, beneficial to O2Precipitation and H+
Generation, so as to reduce applied voltage, reduce energy consumption.
In electrode of the present invention：Cathode area is 5~20cm2, selected from graphite electrode, glassy carbon electrode, active carbon fibre
Tie up electrode or gas-diffusion electrode；The gas-diffusion electrode is carbon paper/cloth/felt-polytetrafluoroethylene electrode, activated carbon-poly- four
PVF electrode, carbon black-polytetrafluoroethylene electrode, CNT-polytetrafluoroethylene electrode or graphene-polytetrafluoroethylene (PTFE) electricity
Pole, wherein, carbon paper/cloth/felt-polytetrafluoroethylene electrode be carbon paper-polytetrafluoroethylene electrode or cloth-polytetrafluoroethylene electrode or
Felt-polytetrafluoroethylene electrode.The negative electrode is preferably 6~10cm of area2Carbon black-polytetrafluoroethylene (PTFE) gas-diffusion electrode.This
The negative electrode that invention uses enables to O2With H+Selective reaction produces H2O2, rather than H2O。
The electrode that the present invention uses can be made by oneself, can also directly be bought from market.
Power supply used in present invention energization is conventional DC voltage-stabilized power supply.
The light source of ultraviolet light of the present invention is preferably the low pressure mercury lamp with transmitting 250~260nm length ultraviolet light.It is described
The power of low pressure mercury lamp can be selected according to being actually needed, 5~50W of the optional power of present invention low pressure mercury lamp.
Application of the further protection methods described of the invention in Industrial Wastewater Treatment.
Ultraviolet light, ozone oxidation are combined by process for treating industrial waste water provided by the invention with electrochemical process, and
The time of reaction is participated in three and design parameter is rationally limited, each factor synergy, it is not necessary to organic carbon source, oxidation
Reducing power is strong, while Organic Pollutants In Water degradation rate is improved, significantly improves the mineralization rate of water body, and save
Energy resource consumption.
Brief description of the drawings
Fig. 1 is the schematic diagram of various embodiments of the present invention equipment therefor；Wherein, 1, reactor, 2, quartz ampoule, 3, negative electrode, 4,
Anode, 5, UV lamp, 6, rotor, 7, sample tap, 8, graduated scale, 9, aeration head, 10, dc source, 11, UV power supplys, 12, gas stream
Gauge, 13, ozone detector, 14, ozone generator, 15, magnetic stirring apparatus, 16, source of oxygen.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.Unless otherwise specified, embodiment
In the conventional meanses that are well known to those skilled in the art of used technological means.
Each embodiment is handled following water body：It is 10mg/L nitro containing concentration in 700mL staying waters
Benzene, chlorobenzene and benzaldehyde, pH value 7, electrical conductivity are 1000 μ S/cm, Fe2+Concentration is 150mg/L.
The device that each embodiment uses is as shown in figure 1, wherein UV uses low pressure mercury lamp, power 10W.Anode uses
Pt plate electrodes, electrode area 6cm2, anode buying is from Tianjin Ida Heng Sheng developments in science and technology Co., Ltd；Negative electrode is from charcoal processing
Black-polytetrafluoroethylene (PTFE) (carbon-PTFE) gas-diffusion electrode, electrode area 10cm2, wherein carbon black is XC-72 type carbon blacks,
Preparation process is as follows：
(i) weigh carbon black 1.5g and mix ultrasonic 10min with 20mL ethanol, it is rear to add 2mL60% ptfe emulsions, surpass
Sound 15min；
(ii) suspension in (i) is heated, be stirred continuously at 80 DEG C to paste；
(iii) paste is pressed into 0.5mm carbon black piece, and nickel screen is clipped in the middle, 20MPa pressure lower sheeting into
Shape；
(iv) electrode that tabletting shapes is put into Muffle furnace, calcining 1h can be prepared by carbon black-polytetrafluoroethylene (PTFE) gas at 350 DEG C
Body diffusion electrode.
In a specific embodiment, the degradation rate refers to：The organic pollution concentration degraded after processing in water body accounts for
The percentage of initial organic pollution concentration.The mineralization rate refers to：Organic dirt of carbon dioxide is degraded to after processing in water body
Dye thing concentration accounts for the percentage of initial organic pollution concentration.
Embodiment 1
Follow the steps below processing：
By O2Ozone generator is passed through, O is prepared3Percent by volume is 10% O2And O3Gaseous mixture, it is micro- using bottom
The gaseous mixture is passed through ozone contactor by hole aeration mode；While being passed through gaseous mixture, staying water is injected described smelly
Oxygen contactor, hydraulic detention time 15min, exports water body immediately, you can；
The O3Mass transfer amount and the ratio between staying water volume be 75mg/L；
Before the hydraulic detention time in 50% time, lead at the yin, yang electrode both ends in ozone contactor
Direct current, cathode terminal current density are 35mA/cm2；Terminate after being powered, then be with power in remaining hydraulic detention time
10W low pressure mercury lamp prolonged exposure water body.
After testing, after the present embodiment processing in water body pollutant degradation rate and the equal convergence 100% of mineralization rate.
Embodiment 2
Follow the steps below processing：
By O2Ozone generator is passed through, O is prepared3Percent by volume is 10% O2And O3Gaseous mixture, it is micro- using bottom
The gaseous mixture is passed through ozone contactor by hole aeration mode；While being passed through gaseous mixture, staying water is injected described smelly
Oxygen contactor, hydraulic detention time 20min, exports water body immediately, you can；
The O3Mass transfer amount and the ratio between staying water volume be 50mg/L；
Before the hydraulic detention time in 40% time, lead at the yin, yang electrode both ends in ozone contactor
Direct current, cathode terminal current density are 38mA/cm2；Terminate after being powered, then be with power in remaining hydraulic detention time
10W low pressure mercury lamp prolonged exposure water body.
After testing, after the present embodiment processing in water body pollutant degradation rate and the equal convergence 100% of mineralization rate.
Embodiment 3
Follow the steps below processing：
By O2Ozone generator is passed through, O is prepared3Percent by volume is 10% O2And O3Gaseous mixture, it is micro- using bottom
The gaseous mixture is passed through ozone contactor by hole aeration mode；While being passed through gaseous mixture, staying water is injected described smelly
Oxygen contactor, hydraulic detention time 10min, exports water body immediately, you can；
The O3Mass transfer amount and the ratio between staying water volume be 100mg/L；
Before the hydraulic detention time in 60% time, lead at the yin, yang electrode both ends in ozone contactor
Direct current, cathode terminal current density are 32mA/cm2；Terminate after being powered, then be with power in remaining hydraulic detention time
10W low pressure mercury lamp prolonged exposure water body.
After testing, after the present embodiment processing in water body pollutant degradation rate and the equal convergence 100% of mineralization rate.
Comparative example 1
Compared with Example 1, differ only in：It is whole persistently to lead to direct current in the hydraulic detention time, without using
Low pressure mercury lamp irradiates water body.
After testing, in water body pollutant degradation rate convergence 100%, mineralization rate 40%.
Comparative example 2
Compared with Example 1, differ only in：Lead to direct current in 20% time before the hydraulic detention time；Knot
After Shu Tong electricity, then low pressure mercury lamp prolonged exposure water body is used in remaining hydraulic detention time.
After testing, the degradation rate of pollutant is 60% in water body, mineralization rate 80%.
Comparative example 3
Compared with Example 1, differ only in：Lead to direct current in 80% time before the hydraulic detention time；Knot
After Shu Tong electricity, then low pressure mercury lamp prolonged exposure water body is used in remaining hydraulic detention time.
After testing, the degradation rate of pollutant is 100% in water body, mineralization rate 50%.
Comparative example 4
Compared with Example 1, differ only in：During the logical direct current, cathode terminal current density is 20mA/cm2。
After testing, the degradation rate of pollutant is 70% in water body, mineralization rate 75%.
Comparative example 5
Compared with Example 1, differ only in：It is whole persistently to lead to direct current in the hydraulic detention time, hold simultaneously
It is continuous to irradiate water body with low pressure mercury lamp.
After testing, after the present embodiment processing in water body pollutant degradation rate and the equal convergence 100% of mineralization rate.Through comparing,
The treatment effect of embodiment 1~3 is with this comparative example without significant difference.
Although above the present invention is described in detail with a general description of the specific embodiments,
On the basis of the present invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Cause
This, without departing from spirit of the invention with made on basis change, modification, replacement, combine, simplification, belong to this
The claimed scope of invention.
Claims (13)
- A kind of 1. method for efficiently removing Industry Waste organic pollutants, it is characterised in that methods described includes following operation：Using bottom micro-pore aeration mode, by O3Percent by volume is 5~10% O2And O3Gaseous mixture is passed through ozone contactor； While being passed through gaseous mixture, staying water is injected into the ozone contactor, hydraulic detention time is 10~20min, immediately Export water body, you can；The O3Mass transfer amount and the ratio between staying water volume be 50~100mg/L；Before the hydraulic detention time in 40~60% times, positioned at the yin, yang electrode both ends of ozone contactor bottom Logical direct current, cathode terminal current density is 25~40mA/cm2；Terminate after being powered, then with purple in remaining hydraulic detention time Outer illumination water jetting body；The TOC concentration of the staying water is 1~50mg/L, and pH value is 6~8, and electrical conductivity is more than 700 μ S/cm, Fe2+Concentration For 20~200mg/L.
- 2. according to the method for claim 1, it is characterised in that the TOC concentration of the staying water is 10~30mg/L, PH value is 6.5~7.5, and electrical conductivity is 1000~8000 μ S/cm, Fe2+Concentration is 50~150mg/L.
- 3. according to the method described in claim 1~2 any one, it is characterised in that TOC source in the staying water Including nitrobenzene, chlorobenzene and benzaldehyde.
- 4. according to the method described in claim 1~2 any one, it is characterised in that the ultraviolet light is specially：With hair Penetrate the low pressure mercury lamp prolonged exposure water body of 250~260nm length ultraviolet light.
- 5. according to the method for claim 3, it is characterised in that the ultraviolet light is specially：With transmitting 250~ The low pressure mercury lamp prolonged exposure water body of 260nm length ultraviolet light.
- 6. according to the method for claim 1, it is characterised in that the gaseous mixture is prepared by following methods：By O2It is passed through Ozone generator, O is prepared3Percent by volume is 5~10% O2And O3Gaseous mixture.
- 7. according to the method for claim 1, it is characterised in that anode is 5~20cm selected from area2Pt electrodes, graphite electricity Pole, boron-doped diamond electrode, Pt/C electrodes, titanium plating ruthenium iridium electrode, titanium plating ruthenium electrode, titanium platinized electrode, titanium-based plating iridium electrode, titanium Base plating rhodium electrode, titanium-based plating iridium dioxide electrode, stainless steel electrode, nickel electrode or the alloy electricity containing two or more transition metal Pole, the alloy electrode containing two or more transition metal are aluminum alloy anode, titanium alloy electrode, copper alloy electrode or kirsite Electrode；The negative electrode is 5~20cm selected from area2Graphite electrode, glassy carbon electrode, Activated Carbon Fiber Electrodes or gas diffusion electricity Pole, the gas-diffusion electrode are carbon paper/cloth/felt-polytetrafluoroethylene electrode, activated carbon-polytetrafluoroethylene electrode, carbon black-poly- Tetrafluoroethene electrode, CNT-polytetrafluoroethylene electrode or graphene-polytetrafluoroethylene electrode.
- 8. according to the method for claim 7, it is characterised in that the anode is 6~10cm of area2Pt plate electrodes；It is described Negative electrode is 10~15cm of area2Carbon black-polytetrafluoroethylene (PTFE) gas-diffusion electrode.
- 9. according to the method described in claim 1,2 or 5~8 any one, it is characterised in that in the hydraulic detention time In preceding 40~60% time, leading to direct current positioned at the yin, yang electrode both ends of ozone contactor bottom, cathode terminal current density is 32~38mA/cm2；Terminate after being powered, then ultraviolet lighting water jetting body is used in remaining hydraulic detention time.
- 10. according to the method for claim 3, it is characterised in that 40~60% times before the hydraulic detention time It is interior, leading to direct current positioned at the yin, yang electrode both ends of ozone contactor bottom, cathode terminal current density is 32~38mA/cm2； Terminate after being powered, then ultraviolet lighting water jetting body is used in remaining hydraulic detention time.
- 11. according to the method for claim 4, it is characterised in that 40~60% times before the hydraulic detention time It is interior, leading to direct current positioned at the yin, yang electrode both ends of ozone contactor bottom, cathode terminal current density is 32~38mA/cm2； Terminate after being powered, then ultraviolet lighting water jetting body is used in remaining hydraulic detention time.
- 12. according to the method for claim 1, it is characterised in that methods described includes following operation：By O2Ozone generator is passed through, O is prepared3Percent by volume is 5~10% O2And O3Gaseous mixture, using bottom micropore The gaseous mixture is passed through ozone contactor by aeration mode；While being passed through gaseous mixture, staying water is injected into institute from bottom Ozone contactor is stated, hydraulic detention time is 10~20min, exports water body immediately, you can；The O3Mass transfer amount and the ratio between staying water volume be 70~80mg/L；Before the hydraulic detention time in 45~55% times, positioned at the yin, yang electrode both ends of ozone contactor bottom Logical direct current, cathode terminal current density is 32~35mA/cm2；Terminate after being powered, then with hair in remaining hydraulic detention time Penetrate the low pressure mercury lamp prolonged exposure water body of 250~260nm length ultraviolet light.
- 13. application of the claim 1~12 any one methods described in Industrial Wastewater Treatment.
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