CN106629999A - Electroacoustic multivariant catalytic oxidation device and method for treating wastewater by using same - Google Patents
Electroacoustic multivariant catalytic oxidation device and method for treating wastewater by using same Download PDFInfo
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- CN106629999A CN106629999A CN201611071758.XA CN201611071758A CN106629999A CN 106629999 A CN106629999 A CN 106629999A CN 201611071758 A CN201611071758 A CN 201611071758A CN 106629999 A CN106629999 A CN 106629999A
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- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 89
- 230000003647 oxidation Effects 0.000 title claims abstract description 87
- 239000002351 wastewater Substances 0.000 title claims abstract description 68
- 238000000034 method Methods 0.000 title claims abstract description 29
- 230000003197 catalytic effect Effects 0.000 title abstract 6
- 229910001868 water Inorganic materials 0.000 claims abstract description 55
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 239000003344 environmental pollutant Substances 0.000 claims abstract description 6
- 231100000719 pollutant Toxicity 0.000 claims abstract description 6
- 238000011144 upstream manufacturing Methods 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 claims description 17
- 230000004044 response Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 11
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 9
- 239000010936 titanium Substances 0.000 claims description 9
- 229910052719 titanium Inorganic materials 0.000 claims description 9
- 239000002131 composite material Substances 0.000 claims description 7
- 230000004913 activation Effects 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 230000009467 reduction Effects 0.000 claims description 5
- 229910001220 stainless steel Inorganic materials 0.000 claims description 5
- 239000010935 stainless steel Substances 0.000 claims description 5
- KJTLSVCANCCWHF-UHFFFAOYSA-N Ruthenium Chemical compound [Ru] KJTLSVCANCCWHF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052707 ruthenium Inorganic materials 0.000 claims description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 3
- 239000010439 graphite Substances 0.000 claims description 3
- 229910002804 graphite Inorganic materials 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 238000011017 operating method Methods 0.000 claims description 3
- 150000002894 organic compounds Chemical class 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 238000004148 unit process Methods 0.000 claims description 3
- 229920011532 unplasticized polyvinyl chloride Polymers 0.000 claims description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims 1
- 239000006185 dispersion Substances 0.000 claims 1
- 230000010354 integration Effects 0.000 claims 1
- 230000002829 reductive effect Effects 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 21
- 238000006243 chemical reaction Methods 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- 230000009471 action Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000356 contaminant Substances 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- 230000008859 change Effects 0.000 description 5
- 239000005416 organic matter Substances 0.000 description 5
- ISPYQTSUDJAMAB-UHFFFAOYSA-N 2-chlorophenol Chemical class OC1=CC=CC=C1Cl ISPYQTSUDJAMAB-UHFFFAOYSA-N 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- -1 hydroxyl radical free radical Chemical class 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 238000004065 wastewater treatment Methods 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 229910000464 lead oxide Inorganic materials 0.000 description 3
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000003814 drug Substances 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000010525 oxidative degradation reaction Methods 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 241000790917 Dioxys <bee> Species 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000013043 chemical agent Substances 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000593 degrading effect Effects 0.000 description 1
- 238000004043 dyeing Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- KHYBPSFKEHXSLX-UHFFFAOYSA-N iminotitanium Chemical compound [Ti]=N KHYBPSFKEHXSLX-UHFFFAOYSA-N 0.000 description 1
- 229910001410 inorganic ion Inorganic materials 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229910001000 nickel titanium Inorganic materials 0.000 description 1
- 238000006385 ozonation reaction Methods 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000009279 wet oxidation reaction 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
- C02F1/34—Treatment of water, waste water, or sewage with mechanical oscillations
- C02F1/36—Treatment of water, waste water, or sewage with mechanical oscillations ultrasonic vibrations
-
- 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
- C02F1/467—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction
- C02F1/4672—Treatment of water, waste water, or sewage by electrochemical methods by electrolysis by electrochemical disinfection; by electrooxydation or by electroreduction by electrooxydation
-
- 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
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/40—Liquid flow rate
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Mechanical Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Electrochemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
- Water Treatment By Electricity Or Magnetism (AREA)
Abstract
The invention discloses an electroacoustic multivariant catalytic oxidation device and a method for treating wastewater by using the same. The electroacoustic multivariant catalytic oxidation device comprises a water inlet pipe, an integrated reactor and a water outlet pipe, wherein the integrated reactor adopts a cuboid structure; one end of the integrated reactor is connected with the water inlet pipe, and the other end of the integrated reactor is connected with the water outlet pipe; the integrated reactor is divided into an ultrasonic reaction zone and an electrocatalytic oxidation zone; the ultrasonic reaction zone is positioned at the upstream of the electrocatalytic oxidation zone. Compared with the prior art, the invention has the beneficial effects as follows: the electroacoustic multivariant catalytic oxidation device couples two advanced oxidation technologies; after electrification, wastewater flows in from the water inlet pipe of the electroacoustic multivariant catalytic oxidation device and first runs through the ultrasonic reaction zone, and pollutants in the wastewater are degraded under the action of ultrasonic; then, the wastewater enters the electrocatalytic oxidation zone and runs through each pole plate in a pushing-flow mode, organic matters in the wastewater are oxidized and degraded under the action of current, and treated effluent water is discharged from the water outlet pipe; chemicals are not required to be added; the electroacoustic multivariant catalytic oxidation device can efficiently treat various organic contaminant-containing industrial wastewater, and is easy and convenient to operate and stable in operation.
Description
Technical field
The invention belongs to field of waste water treatment, is related to a kind of acoustic-electric multiple catalyzing oxidation unit and its processes the side of waste water
Method.
Background technology
At present, one of field of environment engineering is always for the process containing poisonous harmful organism Recalcitrant chemicals waste water
Technological difficulties, the processing means in industrial practice are also very limited.High-level oxidation technology, such as ozone oxidation, Fenton oxidation, wet type
The technologies such as oxidation, electrocatalytic oxidation, supercritical oxidation can in the reduction of COD COD, the attenuation of harmful substance, waste water can
The aspects such as the raising of biochemical have certain effect, therefore are well used in actual waste water processing procedure.Above-mentioned process
In technology, ozonation technology treatment effect is limited, and ozone utilization rate is not high；Fenton oxidation reagent consumption is more, and produces mud
Many, integrated treatment is relatively costly；Wet oxidation needs to operate at high temperature under high pressure with supercritical oxidation, is only suitable for little water yield waste water
Process, and invest and operating cost it is high.
Ultrasound oxidation technology is that, by organic matter degradation, and electrocatalytic oxidation is turned into technology and is then using the cavitation of ultrasonic wave
Oxidation is directly occurred based on the strong oxidizing property free radical and pollutant that are formed in electrochemical system, so that pollutant is obtained
Degraded.The enforcement of both technologies need not add chemical agent, also produce without sludge, therefore with non-secondary pollution, ring
The advantages of border is friendly, is new " green " water technology of extensive application prospect.
At present the water technology such as ultrasonic combined Fenton, light electrolysis of open report has more research report, but super
Report in terms of sound wave and wastewater processing technology associated with electro-catalytic oxidation technology is also considerably less, only Chinese Patent Application No. CN
1792842 A disclose a kind of acoustoelectric combined oxidation treatment method containing 2- Chlorophenols, with stainless steel as negative electrode, titanium-based dioxy
Change lead is anode, and ultrasonic wave is located at bottom of electrolytic tank, useless to chlorophenol containing 2- under the conditions of certain current density and ultrasonic intensity
Water is processed, with obvious removal effect.
The device has preferable treatment effect to 2- Chlorophenols, but it is not enough to there is also some：
(1) aqueous solution is configured as process object with 2- chlorophenols, it is limited to the industrial treatment reference significance of actual waste water；
(2) pole plate is using solid slab and number is limited, limits waste water and accumulates with the contacts contact face of its active surface, using static treatment
Device cannot directly be generalized to the continuous operation at actual production scene；(3) apart from limited, device is unfavorable for industry to ultrasonic propagation
Change scale expansion and application.
The acoustic-electric multiple catalyzing oxidation unit of the present invention can overcome many deficiencies of the above.
The content of the invention
It is to be directed to above-mentioned the deficiencies in the prior art that the present invention needs the problem for solving, and provides a kind of easy to operate, operation
Stably, the method for the acoustic-electric multiple catalyzing oxidation unit of high treating effect and its process waste water.
A kind of acoustic-electric multiple catalyzing oxidation unit, including water inlet pipe, integrated reactor and outlet pipe, integrated reactor
For rectangular structure, its one end is connected with water inlet pipe, and the other end is connected with outlet pipe, the bore of water inlet pipe along water (flow) direction gradually
Become big, the bore of outlet pipe is tapered into along water (flow) direction, and integrated reactor is divided into ultrasonic response area and electrocatalytic oxidation
Area, and ultrasonic response area is located at the upstream in electrocatalytic oxidation area, ultrasonic activation is installed in the both sides of ultrasonic response area inwall
Plate, ultrasonic activation plate is connected with supersonic generator；The inwall in electrocatalytic oxidation area axially replaces equidistant clamping web plate along it
Formula negative electrode and screen plate anode, screen plate negative electrode is connected with the negative pole of power supply, and screen plate anode is connected with the positive pole of power supply.
The cross section of the water inlet pipe, integrated reactor and outlet pipe is rectangle.
The power of supersonic generator is 500-1500W, and supersonic frequency is 25-100kHz.
The inwall in electrocatalytic oxidation area is axially movably equipped with pairs for clamping screen plate negative electrode and screen plate anode along it
Draw-in groove, the logarithm of draw-in groove is equal to the summation of screen plate negative electrode number and screen plate anode number.
The quantity of screen plate negative electrode than screen plate anode quantity more than one, spacing between the two is 10-40mm.
The material of the screen plate negative electrode is graphite, stainless steel or Titanium, and screen plate anode is titanium-based composite coat DSA
Electrode, composite coating has two kinds, Yi Zhongwei：Ruthenium, iridium, the oxide monomer of tantalum or its combination；Another kind is：The oxidation of tin, lead
Thing or rare earth doped tin, lead oxides.
Integrated reactor is made up of ABS, PP, UPVC or FRP material.
The supersonic generator is directly connected to alternating current, and the power supply being connected with screen plate negative electrode and screen plate anode is straight
Stream power supply or high frequency switch power.
A kind of method that acoustic-electric multiple catalyzing oxidation unit processes waste water, including following debugging and operating procedure：
Step one, ultrasonic power and frequency are arranged according to pending waste water quality：Ultrasonic power be 500-1500W,
Frequency 25kHz-100kHz；
Step 2, the spacing that screen plate negative electrode and screen plate anode are adjusted according to the COD of pending waste water：Spacing is 10-
40mm；
Step 3, the power supply for importing pending waste water, connection supersonic generator power supply and electrocatalytic oxidation area：To treat
The waste water of process imports ultrasonic response area, because the bore of water inlet pipe becomes larger along water (flow) direction, current by water inlet pipe
Speed is gradually lowered, and through the abundant effect of ultrasonic wave, then enters in electrocatalytic oxidation area with current, waste water again without back-mixing,
Electrocatalytic oxidation region is progressively passed through with plug-flow pattern with being uniformly dispersed；
Step 4, adjustment current density and waste water flow velocity：At the COD target setting electrocatalytic oxidations of pending waste water
The current density and waste water flow parameters of reason, current density is 7.5-30mA/cm2, flow velocity is 1-10cm/min；
Step 5, waste water are in supersonic zone and electrocatalytic oxidation region, and the organic compound or reproducibility in waste water is dirty
Dye thing is oxidized degraded；
Step 6, process are reached after requirement, and waste water enters outlet pipe, with the reduction of outlet pipe sectional area, waste water flow velocity
Gradually increase, finally discharge from delivery port.
Compared with prior art, the invention has the beneficial effects as follows：Using the polynary coupling technique of ultrasound-electrocatalytic oxidation, carry
High oxidative degradation efficiency of the single electro-catalytic oxidation technology to pollutant, it is wide with applicability, without appointing when processing waste water
What medicament, is a kind of efficient " green " water technology without the need for adjusting the parameters such as waste water acid-base value, temperature, and it can effectively cut
COD in waste reduction water, can be used as the pretreatment of the biodegradability of high-salt wastewater, used water difficult to degradate or the place up to standard of waste water not up to standard
Reason.It is stable with easy to operate compared with other high-level oxidation technologies, the features such as high treating effect, with preferable city
Field application prospect.
Description of the drawings
Fig. 1 is the structural representation of the acoustic-electric multiple catalyzing oxidation unit of the present invention；
Fig. 2 is the structural representation of screen plate anode and screen plate negative electrode；
Fig. 3 is the schematic diagram of electrocatalysis oxidation reaction.
Wherein：1- power supplys, 2- supersonic generators, 3- ultrasonic plates, 4- screen plate anodes, 5- screen plate negative electrodes, 6-
Integrated reactor, 7- water inlet pipes, 8- outlet pipes.
Specific embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are schematic diagram, only with signal side
The basic structure of the formula explanation present invention, therefore it only shows the composition relevant with the present invention.
A kind of acoustic-electric multiple catalyzing oxidation unit includes following characteristics：Power supply 1, supersonic generator 2, ultrasonic plate 3,
Screen plate anode 4, screen plate negative electrode 5, integrated reactor 6, water inlet pipe 7 and outlet pipe 8.
As shown in figure 1, a kind of acoustic-electric multiple catalyzing oxidation unit, including water inlet pipe, integrated reactor and outlet pipe, one
Body reactor is rectangular structure, and its one end is connected with water inlet pipe, and the other end is connected with outlet pipe, and the bore of water inlet pipe is along water
Stream direction become larger, the bore of outlet pipe is tapered into along water (flow) direction, integrated reactor be divided into ultrasonic response area and
Electrocatalytic oxidation area, and ultrasonic response area is located at the upstream in electrocatalytic oxidation area, the both sides of ultrasonic response area inwall are installed
Ultrasonic activation plate, ultrasonic activation plate is connected with supersonic generator；The inwall in electrocatalytic oxidation area is along its axial alternating etc.
Away from clamping screen plate negative electrode and screen plate anode, screen plate negative electrode is connected with the negative pole of power supply, and screen plate anode is with power supply just
Pole connects.
The cross section of the water inlet pipe, integrated reactor and outlet pipe is rectangle.
The power of supersonic generator is 500-1500W, and supersonic frequency is 25-100kHz.
The inwall in electrocatalytic oxidation area is axially movably equipped with pairs for clamping screen plate negative electrode and screen plate anode along it
Draw-in groove, the logarithm of draw-in groove is equal to the summation of screen plate negative electrode number and screen plate anode number.
The quantity of screen plate negative electrode than screen plate anode quantity more than one, spacing between the two is 10-40mm.
The material of the screen plate negative electrode is graphite, stainless steel or Titanium, and screen plate anode is titanium-based composite coat DSA
Electrode, composite coating has two kinds, Yi Zhongwei：Ruthenium, iridium, the oxide monomer of tantalum or its combination；Another kind is：The oxidation of tin, lead
Thing or rare earth doped tin, lead oxides.
Integrated reactor is made up of ABS, PP, UPVC or FRP material.
The supersonic generator is directly connected to alternating current, and the power supply being connected with screen plate negative electrode and screen plate anode is straight
Stream power supply or high frequency switch power.
A kind of method that acoustic-electric multiple catalyzing oxidation unit processes waste water, including following debugging and operating procedure：
Step one, ultrasonic power and frequency are arranged according to pending waste water quality：Ultrasonic power be 500-1500W,
Frequency 25kHz-100kHz；
Step 2, the spacing that screen plate negative electrode and screen plate anode are adjusted according to the COD of pending waste water：Spacing is 10-
40mm；
Step 3, the power supply for importing pending waste water, connection supersonic generator power supply and electrocatalytic oxidation area：To treat
The waste water of process imports ultrasonic response area, because the bore of water inlet pipe becomes larger along water (flow) direction, current by water inlet pipe
Speed is gradually lowered, and through the abundant effect of ultrasonic wave, then enters in electrocatalytic oxidation area with current, waste water again without back-mixing,
Electrocatalytic oxidation region is progressively passed through with plug-flow pattern with being uniformly dispersed；
Step 4, adjustment current density and waste water flow velocity：At the COD target setting electrocatalytic oxidations of pending waste water
The current density and waste water flow parameters of reason, current density is 7.5-30mA/cm2, flow velocity is 1-10cm/min；
Step 5, waste water are in supersonic zone and electrocatalytic oxidation region, and the organic compound or reproducibility in waste water is dirty
Dye thing is oxidized degraded；
Step 6, process are reached after requirement, and waste water enters outlet pipe, with the reduction of outlet pipe sectional area, waste water flow velocity
Gradually increase, finally discharge from delivery port.
Acoustic-electric multiple catalyzing oxidizing process mainly includes ultrasonic oxidation and electrocatalytic oxidation two parts, and concrete principle is：
1. ultrasonic oxidation
Ultrasonic wave can occur cavitation when propagating in water body, produce unstable cavitation bubble, the collapse institute of cavitation bubble
, there is oxidation reaction in the generation hydroxy (OH) and hydrogen-based (H) of generation, it is sufficient to break chemical bonds, can be by water body with organic matter
Harmful organic substance be transformed into carbon dioxide, water, inorganic ions or the easily biodegradable organicses than former organic matter small toxicity, it is therefore ultrasonic
Bio-refractory organic matter is degraded by cavitation during energy of oxidation processes traditional wastewater, is a kind of high-level oxidation technology.
2. electrocatalytic oxidation
Under electric field action, there is electricity using insoluble surface active coating (anodic coating is metal oxide MOx) electrode
Chemical reaction, produces the hydroxyl radical free radical (OH groups) with Strong oxdiative ability, so that many is difficult to organic contamination of degrading
Thing is aoxidized or mineralising is CO2And H2O or other relatively degradable small organic molecules, its reaction mechanism such as Fig. 3 is represented.
OH first in solution-Or H2O anode surface discharge and formed hydroxyl radical free radical (in following formula MOx be anode table
Face active oxidation is uncoated)：
MOx+OH--e-→MOx(·OH)
Or MOx+H2O→MOx(·OH)+H++e- (1)
Then adsorb existing oxygen reaction on the hydroxyl radical free radical and anode of anode surface, and make in hydroxyl free radical
Oxygen is transferred to metal oxide lattice, and forms high oxide MOx+1：
MOx(·OH)→MOx+1+H++e- (2)
When in solution without oxidable organic matter, the active oxygen of two states carries out oxygen and separates out instead by formula (3) and (4)
Should：
MOx(·OH)→1/2O2+MOx+H++e- (3)
MOx+1→1/2O2+MOx (4)
When there is oxidable organic pollution R in solution, then reaction is carried out by (5), (6)：
R+MOx(·OH)z→CO2+MOx+zH++ze- (5)
R+MOx+1→RO+MOx (6)
Embodiment 1：
With certain printing and dyeing enterprise RO membranous systems concentrated water as pending waste water, ultrasonic power is 600W, and frequency is 25kHz；Electricity is urged
Change oxidation respectively with stainless steel and cerium dopping lead oxides coating titanium anode as anode and cathode, cathode and anode spacing 25mm processes electric current
Density is 10mA/cm2, flow velocity 3cm/min, continuous operation.
Water quality contrast table before and after wastewater treatment
Embodiment 2：
With certain Chemical Manufacture enterprise wastewater as pending waste water, ultrasonic power is 800W, and frequency is 40kHz；Electrocatalytic oxidation
Change respectively with titanium and the based composite oxides coated Ni―Ti anode of ruthenium as anode and cathode, cathode and anode spacing 25mm, processing current density
12mA/cm2, flow velocity 1cm/min, continuous operation.
Water quality contrast table before and after wastewater treatment
In sum, the method for a kind of acoustic-electric multiple catalyzing oxidation unit of the present invention and its process waste water, improves
Oxidative degradation efficiency of the single electro-catalytic oxidation technology to pollutant, it is wide with applicability, without any when processing waste water
Medicament, is a kind of efficient " green " water technology without the need for adjusting the parameters such as waste water acid-base value, temperature, and it can effectively cut down
COD in waste water, can be used as the pretreatment of the biodegradability of used water difficult to degradate or the process up to standard of waste water not up to standard.It is senior with other
Oxidation technology is compared, stable with easy to operate, the features such as high treating effect, with preferable market application foreground.
Wastewater treatment equipment and the effect described by example are the invention is not limited in, its description is nonrestrictive.
The authority of the present invention is defined in the claims, and those skilled in the art is obtained according to the present invention by methods such as change, restructuring
Technology related to the present invention all within protection scope of the present invention.
Claims (9)
1. a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：Including water inlet pipe, integrated reactor and outlet pipe, one
Body reactor is rectangular structure, and its one end is connected with water inlet pipe, and the other end is connected with outlet pipe, and the bore of water inlet pipe is along water
Stream direction become larger, the bore of outlet pipe is tapered into along water (flow) direction, integrated reactor be divided into ultrasonic response area and
Electrocatalytic oxidation area, and ultrasonic response area is located at the upstream in electrocatalytic oxidation area, the both sides of ultrasonic response area inwall are installed
Ultrasonic activation plate, ultrasonic activation plate is connected with supersonic generator；The inwall in electrocatalytic oxidation area is along its axial alternating etc.
Away from clamping screen plate negative electrode and screen plate anode, screen plate negative electrode is connected with the negative pole of power supply, and screen plate anode is with power supply just
Pole connects.
2. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The water inlet pipe, integration are anti-
Device and the cross section of outlet pipe is answered to be rectangle.
3. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The power of supersonic generator is
500-1500W, supersonic frequency is 25-100kHz.
4. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The inwall edge in electrocatalytic oxidation area
It is axially movably equipped with pairs for the draw-in groove of clamping screen plate negative electrode and screen plate anode, and the logarithm of draw-in groove is equal to screen plate the moon
The summation of pole number and screen plate anode number.
5. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The quantity of screen plate negative electrode compares net
The quantity of slab anode is more one, and spacing between the two is 10-40mm.
6. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The material of the screen plate negative electrode
For graphite, stainless steel or Titanium, screen plate anode is titanium-based composite coat DSA electrodes, and composite coating has two kinds, Yi Zhongwei：
Ruthenium, iridium, the oxide monomer of tantalum or its combination；Another kind is：Tin, the oxide of lead or rare earth doped tin, lead oxidation
Thing.
7. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：Integrated reactor by ABS,
PP, UPVC or FRP material are made.
8. as claimed in claim 1 a kind of acoustic-electric multiple catalyzing oxidation unit, it is characterised in that：The supersonic generator is direct
Connection alternating current, the power supply being connected with screen plate negative electrode and screen plate anode is dc source or high frequency switch power.
9. a kind of method that as claimed in claim 1 acoustic-electric multiple catalyzing oxidation unit processes waste water, it is characterised in that：Including with
Lower debugging and operating procedure：
Step one, ultrasonic power and frequency are arranged according to pending waste water quality：Ultrasonic power is 500-1500W, frequency
25kHz-100kHz；
Step 2, the spacing that screen plate negative electrode and screen plate anode are adjusted according to the COD of pending waste water：Spacing is 10-40mm；
Step 3, the power supply for importing pending waste water, connection supersonic generator power supply and electrocatalytic oxidation area：Will be pending
Waste water ultrasonic response area, because the bore of water inlet pipe becomes larger along water (flow) direction, water velocity are imported by water inlet pipe
It is gradually lowered, through the abundant effect of ultrasonic wave, then enters in electrocatalytic oxidation area with current, waste water is again without back-mixing, dispersion
Equably electrocatalytic oxidation region is progressively passed through with plug-flow pattern；
Step 4, adjustment current density and waste water flow velocity：According to the process of the COD target settings electrocatalytic oxidation of pending waste water
Current density and waste water flow parameters, current density is 7.5-30mA/cm2, flow velocity is 1-10cm/min；
Step 5, waste water are in supersonic zone and electrocatalytic oxidation region, the organic compound or reductive pollutants in waste water
It is oxidized degraded；
Step 6, process are reached after requirement, and waste water enters outlet pipe, and with the reduction of outlet pipe sectional area, waste water flow velocity is gradually
Increase, finally discharges from delivery port.
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| CN201611071758.XA CN106629999A (en) | 2016-11-29 | 2016-11-29 | Electroacoustic multivariant catalytic oxidation device and method for treating wastewater by using same |
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| CN201611071758.XA Pending CN106629999A (en) | 2016-11-29 | 2016-11-29 | Electroacoustic multivariant catalytic oxidation device and method for treating wastewater by using same |
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| CN106882887A (en) * | 2017-03-06 | 2017-06-23 | 常州大学 | For heavily contaminated organic wastewater continuity preatreating reactors |
| CN108483771A (en) * | 2018-06-04 | 2018-09-04 | 大连鑫恒环保科技有限公司 | Economical and efficient aoxidizes the ultrasonic wave electrolysis unit of industrial wastewater |
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