CN104326530B - The device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment - Google Patents
The device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment Download PDFInfo
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- CN104326530B CN104326530B CN201410645142.3A CN201410645142A CN104326530B CN 104326530 B CN104326530 B CN 104326530B CN 201410645142 A CN201410645142 A CN 201410645142A CN 104326530 B CN104326530 B CN 104326530B
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- 239000010865 sewage Substances 0.000 title claims abstract description 60
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 36
- 230000003647 oxidation Effects 0.000 title claims abstract description 35
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 238000006555 catalytic reaction Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 21
- 238000005273 aeration Methods 0.000 claims abstract description 31
- 239000005416 organic matter Substances 0.000 claims abstract description 16
- 230000015556 catabolic process Effects 0.000 claims abstract description 7
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000006731 degradation reaction Methods 0.000 claims abstract description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 6
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 claims abstract description 4
- 230000002195 synergetic effect Effects 0.000 claims abstract description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 8
- 229910052799 carbon Inorganic materials 0.000 claims description 8
- 239000002131 composite material Substances 0.000 claims description 8
- 239000000463 material Substances 0.000 claims description 8
- 238000010525 oxidative degradation reaction Methods 0.000 claims description 8
- 239000003595 mist Substances 0.000 claims description 7
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 238000005979 thermal decomposition reaction Methods 0.000 claims description 5
- UOFGSWVZMUXXIY-UHFFFAOYSA-N 1,5-Diphenyl-3-thiocarbazone Chemical compound C=1C=CC=CC=1N=NC(=S)NNC1=CC=CC=C1 UOFGSWVZMUXXIY-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 239000002585 base Substances 0.000 claims description 4
- 239000007789 gas Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000010936 titanium Substances 0.000 claims description 4
- 241000370738 Chlorion Species 0.000 claims description 3
- 239000003513 alkali Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 239000004519 grease Substances 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 238000005498 polishing Methods 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 9
- 230000005518 electrochemistry Effects 0.000 abstract description 5
- -1 hydroxyl radical free radical Chemical class 0.000 abstract description 5
- 239000002351 wastewater Substances 0.000 abstract description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 239000007864 aqueous solution Substances 0.000 description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 4
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 229910021627 Tin(IV) chloride Inorganic materials 0.000 description 2
- FAPDDOBMIUGHIN-UHFFFAOYSA-K antimony trichloride Chemical compound Cl[Sb](Cl)Cl FAPDDOBMIUGHIN-UHFFFAOYSA-K 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 238000005554 pickling Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- HPGGPRDJHPYFRM-UHFFFAOYSA-J tin(iv) chloride Chemical compound Cl[Sn](Cl)(Cl)Cl HPGGPRDJHPYFRM-UHFFFAOYSA-J 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003851 biochemical process Effects 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
Classifications
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
-
- 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
-
- 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
- C02F1/76—Treatment of water, waste water, or sewage by oxidation with halogens or compounds of halogens
-
- 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
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- 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
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
- C02F1/461—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis
- C02F1/46104—Devices therefor; Their operating or servicing
- C02F1/46109—Electrodes
- C02F2001/46133—Electrodes characterised by the material
- C02F2001/46138—Electrodes comprising a substrate and a coating
- C02F2001/46142—Catalytic coating
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/02—Specific form of oxidant
- C02F2305/023—Reactive oxygen species, singlet oxygen, OH radical
Landscapes
- 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)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
- Oxygen, Ozone, And Oxides In General (AREA)
Abstract
The invention belongs to electrochemistry technical field of sewage, particularly the device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment. Apparatus of the present invention arrange respectively successively from outside to inside anode electrode, cathode electrode and the aeration tube of tubulose in sealed pipe type reactor; Anode electrode, cathode electrode and aeration tube, respectively along the pipeline axial setting of sealed pipe type reactor, are evenly distributed the aeration in sealed pipe type reactor; Anode electrode of the present invention passes through the Cl in sewage-Change into HClO, ClO-Deng other strong oxidic particles to the direct or indirect oxidation processes of organic matter of sewage; And O in aeration2React with water at cathode electrode and produce H2O2，H2O2With the O in aeration3Reaction generates hydroxyl radical free radical OH, with anode electrode Synergistic degradation organic matter; The present invention can be applicable to conduit wastewater course of conveying, and floor space is little, and efficiency is high, and non-secondary pollution can improve the biochemical of difficult degradation sewage and have higher denitrification functions.
Description
Technical field
The invention belongs to electrochemistry technical field of sewage, particularly a kind of duct type electro-catalysis and ozoneThe device and method that synergistic oxidation is disposed of sewage.
Background technology
In China's industrial park development rapidly, industrial park adopts centralized biochemical process pattern to come processing garden moreDistrict's waste water. The effluent quality containing after the organic sewage disposal of bio-refractory is difficult to water up to standard, complicatedMatter, causes the water pollution in China basin day by day serious, and therefore, industrial park waste water advanced treating becomes urgentlyThe environment difficult problem solving.
In recent years, ozone and the high-level oxidation technology based on ozone are applied to biochemical tailrace advanced processing aspectResearch by extensive concern, it mainly applies O3Oxidisability (2.07Vs) oxidation of organic compounds itself or based onThe advanced oxidation of ozone is (as O3-H2O2) reaction produce the stronger oxidisability particle of oxidisability as OH oxidation fallSeparate organic matter. But O3Oxidability limited and organic oxidation is had certain selective, withH2O2Reaction produces hydroxyl radical free radical and is subject to as the restriction of the environmental condition such as concentration, pH, therefore, and O3Oxidation placeReason sewage is also subject to certain development restriction.
Have scholar that electrochemistry and ozone coupling are disposed of sewage, it mainly utilizes O2Or O3At electric negative electrode and attachedThe nearly strong hydroxyl radical free radical of oxidisability that produces is disposed of sewage, and equality people as few in child utilizes electrochemistry and ozone couplingClose nitrobenzene in degradation of sewage, Fourier Series expansion technique degrading nitrobenzene clearance reaches 96%; In addition, Japanese strain formula meetingSociety has applied for electrochemistry and ozone coupling sewage treatment, but these researchs mainly only utilize electric cathode excitationO2-O3React and produce single oxidisability particle hydroxyl radical free radical, the multiple oxidation that electric anode can produceProperty particle advantage be not exploited, in addition, it is all that Minitype flat is board-like that these research institutes adopt electrodes,Be not suitable for very much with the reaction unit of the airtight aeration of needs, engineering industry's application is restricted.
Summary of the invention
In order to overcome the shortcoming of above-mentioned technology, the invention provides a kind of duct type electro-catalysis and ozone cooperative oxygenChange the device and method of disposing of sewage, can utilize electric cathode excitation O2-O3Produce strong oxidizing property particle hydroxyl certainlyBy base, on electric anode, produce multiple oxidisability particle simultaneously, make full use of electric positive pole and negative pole, improve workThe treatment effect of the sewage quality of industry garden complexity; In addition, electric anodic-cathodic is changed system into sewage conduct shapeCylindrical, be convenient to can to dispose of sewage in sewage transport process, save and process space, be convenient to through engineering approachesPromote.
A device for duct type electro-catalysis and ozone cooperative oxidation sewage treatment, at sealed pipe type reactorIn sheath electrode, sleeve cathode electrode and aeration tube are set respectively from outside to inside successively; Anode electrode,Cathode electrode and aeration tube are respectively along the pipeline axial setting of sealed pipe type reactor; Anode electrode, negative electrodeThe two ends of electrode and the aeration tube respectively end corresponding with sealed pipe type reactor are fixedly linked; Adjacent componentAnd between the two ends of sealed pipe type reactor, form respectively tubular housing; Anode electrode and cathode electrode pass throughInner cased type connection insulated from each other makes tubular reactor form closed system; Anode electrode and cathode electrode are respectivelyBe connected with dc source; On the bottom tube wall of sealed pipe type reactor, water inlet is set, sealed pipe type is anti-Answer on the top tube wall of device and set out the mouth of a river and ozone tail gas exhaust outlet.
Described sealed pipe type reactor one end is by inner cased type connection insulated from each other, and the other end is by sealingFlange forms closed system.
Described anode electrode and cathode electrode are respectively by internal and external screw mode and sealed pipe type reactor (1)The insulating disc connection at two ends is fixed.
Inner sleeve layer by layer each other between described anode electrode and cathode electrode, the number of plies is according to sealed pipe type reactorInternal diameter size and water quality multilayer are installed.
Described anode electrode and cathode electrode are respectively network structure.
The spacing of described anode electrode and cathode electrode is 10mm～20mm.
The material of described anode electrode is titanium, and its surface is coated with inertia composite, described inertia composite woodIn material, the mol ratio of Sn, Ru and Sb is Sn:Ru:Sb=80～90:5～10:5～10.
On described anode electrode, the method for coated inert composite is: by titanium-base polishing, ultrasonic,Surperficial oxide, dirt and grease are removed in alkali cleaning (the NaOH aqueous solution that mass fraction is 30%～50%),Remove oxide layer, improve its electric conductivity by pickling (the HCl aqueous solution that mass fraction is 40%～60%) again;Coating liquid according to the mol ratio configuration of above-mentioned Sn, Ru and Sb (is pressed upper by SnCl4, SbCl3 and RuCl3The ratio of stating is soaked in isopropyl alcohol, the HCl aqueous solution that dropping mass fraction is 40%～60%, and constantly stirUntil dissolve) apply, first at 100 DEG C～110 DEG C, dry, after carry out heat at 450 DEG C～550 DEG CDecompose; Above-mentioned coating, oven dry, thermal decomposition process repeat more than 20 times successively.
The material of described cathode electrode is carbon.
Multiple wire aeration opening are set on described aeration tube.
A kind of side that uses the device of above-mentioned duct type electro-catalysis and ozone cooperative oxidation sewage treatment to dispose of sewageMethod, the device of described duct type electro-catalysis and ozone cooperative oxidation sewage treatment passes through in sewage transport processSewage disposal is carried out in dc source energising; The aeration that described aeration tube produces is the O that ozone generator produces2And O3Mist, wherein O3Volume fraction is approximately 5%～10%; Aeration diffuses to cathode electrode surface,Wherein O2Obtained H by cathode electrode reduction of dissolved2O2, gained H2O2With O3It is stronger that reaction generates oxidisabilityOH, and then oxidative degradation organic matter of sewage; Described anode electrode surface direct oxidation degradation of sewage is organicThing, or generation dithizone carries out oxidative degradation to organic matter of sewage, the chlorion wherein containing in sewageBe oxidized to ClO-Organic matter of sewage is carried out to oxidative degradation.
The dithizone that described anode electrode surface produces is O3、·OH、ClO-And O.
Beneficial effect of the present invention is:
Apparatus of the present invention in electrocatalytic method, O2On carbon cathode, can produce H2O2, can with O3Occur collaborativeOxidation. The present invention is in conjunction with sewage running piping, and having designed anodic-cathodic is that the electro-catalysis of mesh duct formula is anti-Answer device, in sewage transport process, just can directly carry out oxidation processes to sewage. Make full use of to produce O3ForThe mist that object produces is reacting gas, utilizes O2And O3O in mist2Anti-in electro-catalysisAbove answering the carbon cathode of device, there is catalytic reaction, produce H2O2, and H2O2Again with mist in O3InsteadShould produce the OH hydroxyl radical free radical particle that oxidisability is strong, thus oxidation removal bio-refractory organic matter;Utilization has the electric anode generation dithizone O compared with oxygen evolution potential and lower chlorine evolution potential3、·OH、·ODeng and HClO, ClO-Etc. chloride oxidisability particle Simultaneous Oxidation degraded biorefractory organic, thereby effectivelyRealize electro-catalysis and O3、Cl-Deng synergy.
Brief description of the drawings
Fig. 1 is the structural representation of the device of duct type electro-catalysis of the present invention and ozone cooperative oxidation sewage treatment;
Fig. 2 is the transverse cross-sectional view of the device of duct type electro-catalysis of the present invention and ozone cooperative oxidation sewage treatment;
Fig. 3 is the longitudinal sectional drawing of the device of duct type electro-catalysis of the present invention and ozone cooperative oxidation sewage treatment;
Number in the figure: 1-sealed pipe type reactor, 2-cathode electrode, 3-anode electrode, 4-sealing flange,5-dc source, 6-aeration tube.
Detailed description of the invention
The invention provides the device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment,Carry out detailed, complete below in conjunction with the drawings and specific embodiments to concrete technical method of the present invention and deviceDescription explanation, described detailed description of the invention is only part example of the present invention, instead of whole examples.Those skilled in the art do not make the every other example obtaining under creative work prerequisite, all belong to thisThe protection domain of invention.
A device for duct type electro-catalysis and ozone cooperative oxidation sewage treatment, at sealed pipe type reactor 1In sheath electrode 3, sleeve cathode electrode 2 and aeration tube 6 are set respectively from outside to inside successively; Anode electricityThe utmost point 3, cathode electrode 2 and aeration tube 6 are respectively along the pipeline axial setting of sealed pipe type reactor 1; AnodeThe two ends of electrode 3, cathode electrode 2 and the aeration tube 6 respectively end corresponding with sealed pipe type reactor 1 are solidPhasing connects; Between the two ends of adjacent component and sealed pipe type reactor 1, form respectively tubular housing; AnodeElectrode 3 and cathode electrode 2 make tubular reactor 1 form closed system by inner cased type connection insulated from each other;Anode electrode 3 is connected with dc source 5 respectively with cathode electrode 2; The bottom of sealed pipe type reactor 1Water inlet is set on tube wall, on the top tube wall of sealed pipe type reactor 1, sets out the mouth of a river and ozone tail gasExhaust outlet.
Described sealed pipe type reactor 1 one end is by inner cased type connection insulated from each other, and the other end is by closeEnvelope flange 4 forms closed system.
Described anode electrode 3 and cathode electrode 2 are respectively by internal and external screw mode and sealed pipe type reactor 1The insulating disc connection at two ends is fixed.
Inner sleeve layer by layer each other between described anode electrode 3 and cathode electrode 2, the number of plies is anti-according to sealed pipe typeAnswer device 1 internal diameter size and water quality multilayer to install.
Described anode electrode 3 and cathode electrode 2 are respectively network structure.
The spacing of described anode electrode 3 and cathode electrode 2 is 10mm～20mm.
The material of described anode electrode 3 is titanium, and its surface is coated with inertia composite, and described inertia is compoundIn material, the mol ratio of Sn, Ru and Sb is Sn:Ru:Sb=80～90:5～10:5～10. .
On described anode electrode 3, the method for coated inert composite is: by titanium-base is polished, surpassedSound, alkali cleaning (the NaOH aqueous solution that mass fraction is 30%～50%) remove surperficial oxide, dirt andGrease, then remove oxide layer, improve it by pickling (the HCl aqueous solution that mass fraction is 40%～60%)Electric conductivity; According to the coating liquid of the mol ratio configuration of above-mentioned Sn, Ru and Sb (by SnCl4, SbCl3 andRuCl3 is soaked in isopropyl alcohol according to the above ratio, the HCl aqueous solution that dropping mass fraction is 40%～60%,And constantly stir until dissolve) apply, first at 100 DEG C～110 DEG C, dry, after at 450 DEG C～550 DEG CCarry out thermal decomposition; Above-mentioned coating, oven dry, thermal decomposition process repeat more than 20 times successively.
The material of described cathode electrode 2 is carbon.
Multiple wire aeration opening are set on described aeration tube 6.
The device of described duct type electro-catalysis and ozone cooperative oxidation sewage treatment passes through in sewage transport processSewage disposal is carried out in dc source 5 energisings, thereby saves sewage disposal space; Described aeration tube 6 producesAeration is the O that ozone generator produces2And O3Mist; Aeration diffuses to carbon cathode electrode 2 surfaces,In DC electric field, carbon cathode electrode 2 forms solid-liquid-gas three phase boundary, O in sewage solution2By carbon cathodeElectrode 2 reduction of dissolved obtain H2O2, gained H2O2With O3Reaction generates the stronger OH of oxidisability, oxidationDegradation of sewage organic matter; The surperficial direct oxidation degradation of sewage of described titanium anode electrode 3 organic matter, or produce oxygenVoltinism ion pair organic matter of sewage carries out oxidative degradation, the chlorion wherein containing in sewage be oxidized to HCLO,ClO-Organic matter of sewage is carried out to oxidative degradation.
The O that ozone generator is manufactured2And O3Mist through aeration tube 6 uniform aerations, gained aeration and carbonCathode electrode 2 even contact react, and the oxidisability particle of generation is evenly distributed in pipeline, is conducive toOxidative degradation organic matter.
Claims (9)
1. a device for duct type electro-catalysis and ozone cooperative oxidation sewage treatment, is characterized in that: closeClose sheath electrode (3), sleeve cathode electricity are set respectively in pipeline reactor (1) from outside to inside successivelyThe utmost point (2) and aeration tube (6); Anode electrode (3), cathode electrode (2) and aeration tube (6) edge respectivelyThe pipeline axial setting of sealed pipe type reactor (1); Anode electrode (3), cathode electrode (2) and expose to the sunThe two ends of tracheae (6) the respectively end corresponding with sealed pipe type reactor (1) are fixedly linked; Adjacent componentAnd form respectively tubular housing between the two ends of sealed pipe type reactor (1); Anode electrode (3) and negative electrodeElectrode (2) makes tubular reactor (1) form closed system by inner cased type connection insulated from each other; Anode electricityThe utmost point (3) is connected with dc source (5) respectively with cathode electrode (2); Sealed pipe type reactor (1)On the tube wall of bottom, water inlet is set, on the top tube wall of sealed pipe type reactor (1), sets out the mouth of a river and smellyOxygen tail gas exhaust outlet;
Described anode electrode (3) and cathode electrode (2) are respectively network structure; Described anode electrode (3)And the spacing of cathode electrode (2) is 10mm～20mm.
2. the dress of a kind of duct type electro-catalysis according to claim 1 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that: described sealed pipe type reactor (1) one end is by inner cased type connection insulated from each other,The other end forms closed system by sealing flange (4).
3. the dress of a kind of duct type electro-catalysis according to claim 1 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that: described anode electrode (3) and cathode electrode (2) respectively by internal and external screw mode withThe insulating disc connection at sealed pipe type reactor (1) two ends is fixed.
4. the dress of a kind of duct type electro-catalysis according to claim 1 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that: the material of described anode electrode (3) is titanium, and its surface is coated with inertia composite,In described inertia composite, the mol ratio of Sn, Ru and Sb is Sn:Ru:Sb=80～90:5～10:5～10.
5. the dress of a kind of duct type electro-catalysis according to claim 4 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that, in the method for the upper coated inert composite of described anode electrode (3) be: by rightTitanium-base polishing, ultrasonic, alkali cleaning are removed surperficial oxide, dirt and grease, then are removed oxidation by picklingLayer;
Coating liquid according to the mol ratio configuration of Sn claimed in claim 4, Ru and Sb applies, first at 100 DEG CAt～110 DEG C dry, after carry out thermal decomposition at 450 DEG C～550 DEG C; Above-mentioned coating, oven dry, thermal decomposition processRepeat successively more than 20 times.
6. the dress of a kind of duct type electro-catalysis according to claim 1 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that: the material of described cathode electrode (2) is carbon.
7. the dress of a kind of duct type electro-catalysis according to claim 1 and ozone cooperative oxidation sewage treatmentPut, it is characterized in that: multiple wire aeration opening are set on described aeration tube (6).
8. duct type electro-catalysis and the ozone association described in right to use requirement 1～7 any one claimThe method of disposing of sewage with the device of oxidation sewage treatment, is characterized in that: described duct type electro-catalysis and ozoneThe device that synergistic oxidation is disposed of sewage carries out sewage place by dc source (5) energising in sewage transport processReason; The aeration that described aeration tube (6) produces is the O that ozone generator produces2And O3Mist; Expose to the sunGas diffuses to cathode electrode (2) surface, wherein O2Obtained H by cathode electrode (2) reduction of dissolved2O2, gainedH2O2With O3Reaction generates OH, oxidative degradation organic matter of sewage; Directly oxygen of described anode electrode (3) surfaceChange degradation of sewage organic matter, or produce dithizone organic matter of sewage is carried out to oxidative degradation, wherein in sewageThe chlorion containing is oxidized to HClO, ClO-Organic matter of sewage is carried out to oxidative degradation.
9. method according to claim 8, is characterized in that: described anode electrode (3) surface producesDithizone be O3、·OH、HClO、ClO-And O.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645142.3A CN104326530B (en) | 2014-11-06 | 2014-11-06 | The device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410645142.3A CN104326530B (en) | 2014-11-06 | 2014-11-06 | The device and method of a kind of duct type electro-catalysis and ozone cooperative oxidation sewage treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104326530A CN104326530A (en) | 2015-02-04 |
| CN104326530B true CN104326530B (en) | 2016-05-11 |
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