CN101462788B - Technological process and apparatus for advanced oxidation degradation of nitrobenzene wastewater - Google Patents
Technological process and apparatus for advanced oxidation degradation of nitrobenzene wastewater Download PDFInfo
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- CN101462788B CN101462788B CN2009100736669A CN200910073666A CN101462788B CN 101462788 B CN101462788 B CN 101462788B CN 2009100736669 A CN2009100736669 A CN 2009100736669A CN 200910073666 A CN200910073666 A CN 200910073666A CN 101462788 B CN101462788 B CN 101462788B
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- 239000002351 wastewater Substances 0.000 title claims abstract description 114
- 230000003647 oxidation Effects 0.000 title claims abstract description 30
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 30
- 230000015556 catabolic process Effects 0.000 title claims abstract description 19
- 238000006731 degradation reaction Methods 0.000 title claims abstract description 19
- LQNUZADURLCDLV-UHFFFAOYSA-N nitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC=C1 LQNUZADURLCDLV-UHFFFAOYSA-N 0.000 title claims description 60
- 238000000034 method Methods 0.000 title abstract description 34
- 230000008569 process Effects 0.000 title abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 50
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 claims abstract description 46
- 238000012546 transfer Methods 0.000 claims abstract description 22
- 238000005868 electrolysis reaction Methods 0.000 claims abstract description 10
- 238000003672 processing method Methods 0.000 claims description 12
- 238000012856 packing Methods 0.000 claims description 10
- YADSGOSSYOOKMP-UHFFFAOYSA-N lead dioxide Inorganic materials O=[Pb]=O YADSGOSSYOOKMP-UHFFFAOYSA-N 0.000 claims description 9
- 229910001220 stainless steel Inorganic materials 0.000 claims description 6
- 239000010935 stainless steel Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 4
- 239000000758 substrate Substances 0.000 claims description 3
- 150000005181 nitrobenzenes Chemical class 0.000 abstract description 8
- 230000008878 coupling Effects 0.000 abstract description 5
- 238000010168 coupling process Methods 0.000 abstract description 5
- 238000005859 coupling reaction Methods 0.000 abstract description 5
- 230000000593 degrading effect Effects 0.000 abstract description 3
- 239000000126 substance Substances 0.000 abstract description 3
- 238000004065 wastewater treatment Methods 0.000 abstract description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 abstract description 2
- 230000002195 synergetic effect Effects 0.000 abstract description 2
- 239000003599 detergent Substances 0.000 abstract 1
- 239000010842 industrial wastewater Substances 0.000 abstract 1
- DYSXLQBUUOPLBB-UHFFFAOYSA-N 2,3-dinitrotoluene Chemical compound CC1=CC=CC([N+]([O-])=O)=C1[N+]([O-])=O DYSXLQBUUOPLBB-UHFFFAOYSA-N 0.000 description 12
- 238000006243 chemical reaction Methods 0.000 description 11
- 238000005516 engineering process Methods 0.000 description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 9
- 238000012545 processing Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 8
- IQUPABOKLQSFBK-UHFFFAOYSA-N 2-nitrophenol Chemical compound OC1=CC=CC=C1[N+]([O-])=O IQUPABOKLQSFBK-UHFFFAOYSA-N 0.000 description 4
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000006276 transfer reaction Methods 0.000 description 4
- SPSSULHKWOKEEL-UHFFFAOYSA-N 2,4,6-trinitrotoluene Chemical group CC1=C([N+]([O-])=O)C=C([N+]([O-])=O)C=C1[N+]([O-])=O SPSSULHKWOKEEL-UHFFFAOYSA-N 0.000 description 3
- OTIIACFIVPQHPU-UHFFFAOYSA-N [N+](=O)([O-])C1=C(C=CC=C1)O.[Cl] Chemical compound [N+](=O)([O-])C1=C(C=CC=C1)O.[Cl] OTIIACFIVPQHPU-UHFFFAOYSA-N 0.000 description 3
- 235000011114 ammonium hydroxide Nutrition 0.000 description 3
- 239000003344 environmental pollutant Substances 0.000 description 3
- 238000012432 intermediate storage Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 125000000449 nitro group Chemical class [O-][N+](*)=O 0.000 description 3
- 231100000719 pollutant Toxicity 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- BFCFYVKQTRLZHA-UHFFFAOYSA-N 1-chloro-2-nitrobenzene Chemical class [O-][N+](=O)C1=CC=CC=C1Cl BFCFYVKQTRLZHA-UHFFFAOYSA-N 0.000 description 2
- PAYRUJLWNCNPSJ-UHFFFAOYSA-N Aniline Chemical compound NC1=CC=CC=C1 PAYRUJLWNCNPSJ-UHFFFAOYSA-N 0.000 description 2
- 238000009303 advanced oxidation process reaction Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000002360 explosive Substances 0.000 description 2
- RBXVOQPAMPBADW-UHFFFAOYSA-N nitrous acid;phenol Chemical class ON=O.OC1=CC=CC=C1 RBXVOQPAMPBADW-UHFFFAOYSA-N 0.000 description 2
- WDCYWAQPCXBPJA-UHFFFAOYSA-N 1,3-dinitrobenzene Chemical compound [O-][N+](=O)C1=CC=CC([N+]([O-])=O)=C1 WDCYWAQPCXBPJA-UHFFFAOYSA-N 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001555 benzenes Chemical class 0.000 description 1
- 230000031018 biological processes and functions Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000975 dye Substances 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000006056 electrooxidation reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 125000003010 ionic group Chemical group 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- -1 nitro TNT Chemical compound 0.000 description 1
- QXDYIBHUQHUJJI-UHFFFAOYSA-N nitrobenzene phenol Chemical compound OC1=CC=CC=C1.[O-][N+](=O)C1=CC=CC=C1 QXDYIBHUQHUJJI-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000002957 persistent organic pollutant Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 238000002203 pretreatment Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000000197 pyrolysis Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
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- 238000004904 shortening Methods 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
- 238000005406 washing Methods 0.000 description 1
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- Water Treatment By Electricity Or Magnetism (AREA)
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Abstract
The invention belongs to the technical field of nitrobenzene class wastewater treatment and in particular relates to a process method for advanced oxidation and degradation of nitrobenzene class wastewater. The invention solves the problem that the prior method for degrading nitrobenzene class wastewater has long time consumption and high cost. The method comprises that: wastewater and ozone undergo full haptoreaction in gas-liquid mass transfer equipment; after the haptoreaction, the wastewater enters a coupling reactor consisting of an ultrasonic wave field and an electrolysis field; and nitrobenzene class substances in the wastewater are degraded under the synergistic action of ultrasonic wave and micro-electrolysis. The device comprises the gas-liquid mass transfer equipment; a gas inlet of the gas-liquid mass transfer equipment is connected with an ozone generator; a liquid inlet of the gas-liquid mass transfer equipment is connected with a nitrobenzene class wastewater pool; a liquid outlet of the gas-liquid mass transfer equipment is connected with the wastewater coupling reactor; and the bottom of the wastewater coupling reactor is provided with an ultrasonic wave generator. The process method has the following advantages: the process method has simple process flow and convenient operation, farthest reduces treatment cost and can be applied to various organic industrial wastewater such as phenol-containing wastewater, detonator wastewater, dye wastewater, wastewater in a petrochemical enterprise, detergent wastewater and the like.
Description
Technical field
The invention belongs to the technical field of the processing of nitrobenzene wastewater, be specifically related to a kind of processing method of advanced oxidation degradation of nitrobenzene wastewater, it adopts the coupling of ozone technology, ultrasonic technology and electrolysis tech to handle acting in conjunction.
Background technology
Nitrobenzene compounds belongs to poisonous organic pollutant of difficult degradation, because its stronger material toxicity is classified as priority pollutants both at home and abroad.The traditional treatment method of such waste water has extraction process, absorption method and biological process, but owing to the oil of mirbane Stability Analysis of Structures, in practical engineering application, handles such waste water with conventional technology and bioremediation and often be difficult to obtain gratifying treatment effect.
In the last few years, degree of depth high-level oxidation technology degradation of contaminant has been done a large amount of research both at home and abroad, many new treatment processs have been attempted, for example optical radiation oxidation style, ozone oxidation method, ultraviolet oxidation style, ultrasound oxidation technology method, electrochemical oxidation process and ultrasonic wave/ozone method.These methods have common characteristic: have strong oxidizing property, effectively the degrading nitrobenzene pollutant; Technical process is simple, operational safety; Non-secondary pollution meets the environmental protection concept of " green chemical industry ", and advanced oxidation processes is the method that has the industrial application potentiality most.Yet, studies show that use any method for oxidation treatment of Nitrobenzene class water separately, nitrobenzene degradation speed is all extremely slow, can't in short time, reach processing requirements.Though ultrasonic wave/ozone method has improved processing efficiency to a certain extent as a kind of integrated processes, length consuming time, the height of cost make enterprise still can't accept.Therefore, raising processing efficiency, shortening treatment time are the key factors of advanced oxidation processes industrial applications.
Summary of the invention
The present invention provides the processing method and the device of a kind of ozone-ultrasonic wave-electrolytic advanced oxidation degradation of nitrobenzene wastewater in order to solve the method above shortcomings of existing degrading nitrobenzene class waste water.
The present invention adopts following technical scheme to realize:
The processing method of advanced oxidation degradation of nitrobenzene wastewater, it is characterized in that step is as follows: with waste water in gas-liquid mass transfer (contact) equipment with the abundant contact reacts of ozone, waste water after the contact reacts enters in the coupled reactor of being made up of ultrasonic wave field and electrolysis field, and the nitrobenzene matters in the waste water obtains degraded under ultrasonic wave and little electrolytic synergy.
Waste water enters that to adopt before the gas-liquid mass transfer (contact) equipment basic cpd to regulate the pH value be 9～11.Waste water is 50～500L/m with the liquid gas volume ratio (ratio of liquid flow rate and gas flow) of ozone in gas-liquid mass transfer (contact) equipment
3, ozone concn is 8～18mg/L.
Realize the device of the processing method of advanced oxidation degradation of nitrobenzene wastewater, comprise gas-liquid mass transfer (contact) equipment, establish inlet mouth on the gas-liquid mass transfer (contact) equipment, the air outlet, fluid inlet, liquid outlet, inlet mouth connects ozonizer, fluid inlet connects the nitrobenzene wastewater pond, liquid outlet connects the waste water coupled reactor, some groups of staggered negative electrodes and positive electrode are set in the described waste water coupled reactor, form rectangular channel between each anodic-cathodic, each rectangular channel communicates successively, constitute repeatedly the waste water flow passage of baffling, waste water coupled reactor bottom is provided with ultrasonic generator.
Gas-liquid mass transfer (contact) equipment is a packing tower or rotary packed bed.
Negative electricity is stainless steel substrates or copper sheet very, and positive electricity is plumbic oxide or the surperficial RuO that scribbles Ti very
2
The ultrasonic frequency of ultrasonic generator is 28kHz～500kHz, and the ultrasonic wave sound intensity is 1W/cm
2～100W/cm
2, current density is 10mA/cm
2～40mA/cm
2
The present invention utilizes the synergy of ozone-ultrasonic wave-three kinds of technology of electrolysis to come the pre-treatment nitrobenzene wastewater, and making it to reach in the short time can biochemical effect.Compared with prior art, processing efficiency of the present invention improves 10%, and the reaction times 30% shortens, and ozone utilization rate improves 20%, has significantly reduced cost of water treatment.
The present invention has following beneficial effect: technical process is simple, easy to operate, three kinds of ingenious couplings of technology, various technology performance maximum effect, reduce processing cost to greatest extent, can be applicable to handle various organic industrial sewages such as phenolic wastewater, explosive waste water, waste water from dyestuff, petroleum chemical enterprise's waste water, washing composition waste water etc.
Description of drawings
Fig. 1 is the process flow sheet that utilizes advanced oxidation degradation of nitrobenzene wastewater;
Fig. 2 is rotary packed bed structural representation
Fig. 3 is the packing tower structural representation
Among the figure: 1-nitrobenzene wastewater pond, 2-liquid pump I, 3-liquid meter, the 4-gas meter, 5-gas-liquid mass transfer (contact) equipment, 6-ozonizer, 7-waste water intermediate storage tank, 8-liquid pump II, 9-KI absorption liquid, the 10-ultrasonic generator, the 11-negative electrode (use solid line---expression), the 12-positive electrode (with dashed lines------expression), 13-waste water flow passage, the outlet of 14-processed waste water, 15-waste water coupled reactor;
2.1-rotary packed bed gas feed, 2.2-rotor, 2.3-filler, 2.4-hypergravity device inner chamber, 2.5-rotary packed bed liquid-inlet, the rotary packed bed pneumatic outlet of 2.6-, 2.7-sealing, 2.8-nozzle, 2.9-hypergravity device exocoel, 2.10-shell, 2.11-central distribution device, 2.12-rotating shaft, the rotary packed bed liquid exit of 2.13-;
3.1-the packing tower pneumatic outlet, 3.2-packing tower liquid-inlet, the gas feed of 3.3-packing tower, 3.4-packing tower liquid exit, 3.5-base
Embodiment
A kind of processing method of advanced oxidation degradation of nitrobenzene wastewater, step is as follows:
1, with basic cpd the pH value of nitrobenzene wastewater is adjusted to 9～11, basic cpd can adopt NaOH or ammoniacal liquor;
2, ozone enters gas-liquid mass transfer (contact) equipment 5 after ozonizer 6 measures by gas meter 4, nitrobenzene wastewater is entering gas-liquid mass transfer (contact) equipment 5 by liquid-inlet under the effect of liquid pump I2 after liquid meter 3 meterings, the abundant contact reacts of waste water and ozone, in this process, finish the preliminary oxidation of nitrobenzene wastewater, wherein the part ozone solution is in waste water, this class of nitro material is decomposed into organic intermediate by ozone oxidation in the part waste water simultaneously.After gas-liquid was finished reaction, remaining ozone gas was discharged from the top and is entered the absorption of finishing ozone the KI absorption liquid 9, and the waste water after the preliminary oxidation enters waste water intermediate storage tank 7.
Gas-liquid mass transfer (contact) equipment can be packing tower (as shown in Figure 3) or rotary packed bed (as shown in Figure 2)
3, the waste water of waste water intermediate storage tank enters waste water coupled reactor 15 through liquid meter under the effect of liquid pump II8: waste water coupled reactor 15 bottoms are equipped with ultrasonic generator 10 and electrolyzer, pretreated waste water at first enters in the multistage waste water flow passage 13 of electrolyzer, and waste water flow passage 13 is formed by the interlaced arrangement of some anodic-cathodics.Nitro class waste water passes through anodic-cathodic plate step by step successively from first step anodic-cathodic plate, is discharged by the last step battery lead plate.Carry out electrolysis by staggered anodic-cathodic plate, staggered anodic-cathodic plate has increased the contact area that is dissolved in ozone and pole plate in the waste water, just prolonged the electrolysis time of waste water, increased hyperacoustic swept area simultaneously, acoustic energy is evenly distributed.Ultrasonic wave field and electric field synergistic effect are with the organism in the efficient oxidation waste water in this process, and waste water is discharged by the processed waste water outlet and carried out biochemical treatment then.Current density is 10mA/cm in the said process
2～40mA/cm
2, ultrasonic wave sound intensity 1W/cm
2～100W/cm
2, frequency is 28kHz～500kHz.
Negative electrode 11 is stainless steel substrates or copper sheet, and positive electrode 12 scribbles the RuO of Ti for plumbic oxide or surface
2
In the processing method of the present invention, there are two effects the electrolysis field:
1, at negative electrode, ozone obtains an electronics, generates O
3 -, O
3 -Be the ionic group stronger than ozone molecule, generate the stronger OH of oxidation capacity with the water reaction, improved the oxidation capacity of ozone, accelerated speed of reaction, reaction mechanism is as follows:
O
3+e
-→·O
3 -(aq) (1)
·O
3 -+H
2O→·OH+O
2+OH
- (2)
2, at negative electrode, difficult oxidized oil of mirbane material is reduced to easily oxidized aniline category matter, promotes faster, easier the carrying out of reaction, is that the example reaction mechanism is as follows with the dinitrobenzene:
In the processing method of the present invention, action of ultrasonic waves is as follows:
1, the ultrasonic cavitation bubble is to organic pyrolysis;
2, the more OH of intensified by ultrasonic wave ozone generation;
3, ultrasonic wave has improved rate of mass transfer, makes the OH that produces at negative electrode in time to external diffusion, and the organism in the waste water spreads to negative electrode simultaneously, and the enhancing mixed effect improves speed of reaction.The nitrobenzene wastewater treatment time reduces greatly under the combined action of ultrasonic wave, ozone and three kinds of technology of electrolysis, and just can reach in short time can biochemical effect.
Embodiment 1: handle the dinitrotoluene (DNT) (DNT) in the fiery explosive factory waste water.The dinitrotoluene (DNT) starting point concentration is 195mg/L in the waste water.Adopt the ozone oxidation method to the 10L/h wastewater treatment, the liquid gas volume ratio of waste water and ozone is 500L/m
3, ozone concn is 13.5mg/L, behind the degraded 180min, the clearance of dinitrotoluene (DNT) has only 10%; Adopt ultrasonic wave/ozone method to handle, treatment capacity is constant, and ozone concn is constant, and the ultrasonic wave sound intensity is 1W/cm
2, frequency is 28kHz, pH=11, and behind the 180min, the clearance of dinitrotoluene (DNT) is 30%; Ozone and DNT waste water carry out the gas-liquid mass transfer reaction in rotary packed bed, finish the preliminary degraded of waste water, and waste water enters to be equipped with in ultrasonic wave-electrolytic waste water reaction groove and handles then.The concentration of the ultrasonic wave sound intensity, frequency and ozone is constant, adopts ammoniacal liquor to regulate pH=10, and current density is 20mA/cm
2, lead dioxide electrode is an anode, and stainless steel is a negative electrode, and behind the processing 180min, the clearance of dinitrotoluene (DNT) reaches 70%, and oxidation efficiency has improved 7 times than ozone method, has improved 2～3 times than ultrasonic wave/ozone method.
Embodiment 2: handle chloronitrobenzene class waste water.The benzene series organism that contains nitro in the waste water mainly contains nitrophenol, oil of mirbane, chlorine nitrophenol, and total concn is 21mg/L, and waste water COD is 1103mg/L.Adopt ozone/electrolytic process that 80L/h waste water is handled, ozone concn is 10mg/L, and the surface scribbles the RuO of Ti
2Be anode, stainless steel is a negative electrode, and current density is 40mA/cm
2, behind the degraded 180min, nitrophenol, oil of mirbane, the total clearance of chlorine nitrophenol are 70%, the COD clearance is 20%; Ozone and chloronitrobenzene class waste water carry out the gas-liquid mass transfer reaction in rotary packed bed, the liquid gas volume ratio of waste water and ozone is 50L/m
3, ozone concn is 10mg/L, finishes the preliminary degraded of waste water, then waste water enter be equipped with ultrasonic wave-/handle in the electrolytic waste water reaction groove.The concentration of the ultrasonic wave sound intensity, frequency and ozone is constant, and the ultrasonic wave sound intensity is 40W/cm
2, frequency is 30mA/cm for the 500kHz current density
2, after employing NaOH regulated pH=9 processing 30min, nitrophenol, oil of mirbane, the total clearance of chlorine nitrophenol reached 82%, and the COD clearance is 87%, and the treatment time shortens to original sixth, and the COD clearance has improved 4 times, has improved processing efficiency greatly.
Embodiment 3: treatment of Nitrobenzene phenol waste water.The nitrophenols solution of configuration 100mg/L, treatment capacity is 5L/h, and ozone and nitrophenol wastewater carry out the gas-liquid mass transfer reaction in packing tower, and the liquid gas volume ratio of waste water and ozone is 100L/m
3, ozone concn is 18mg/L, finishes the preliminary degraded of waste water, waste water enters to be equipped with in ultrasonic wave-electrolytic waste water reaction groove and handles then.The ultrasonic wave sound intensity is 50W/cm
2, frequency is 40kHz, adopts NaOH to regulate pH=10, current density is 10mA/cm
2, lead dioxide electrode is an anode, after stainless steel was cathode treatment 60min, the clearance of nitrophenols reached 98%.
Embodiment 4: Treating Ammunition Disposal Waste Water.The main pollutant component of ammunition disposal wastewater is trotyl (TNT), and concentration is 60mg/L, and treatment capacity is 100L/h, and ozone and nitro TNT waste water carry out the gas-liquid mass transfer reaction in rotary packed bed packing tower, and the liquid gas volume ratio of waste water and ozone is 50L/m
3, ozone concn is 8mg/L, finishes the preliminary degraded of waste water, waste water enters to be equipped with in ultrasonic wave-electrolytic waste water reaction groove and handles then.Lead dioxide electrode is an anode, and copper coin is a negative electrode, and the ultrasonic wave sound intensity is 100W/cm
2, frequency is 40mA/cm for the 50kHz current density
2, adopt ammoniacal liquor to regulate pH=9 degraded 30min, the TNT clearance reaches 99%.
Claims (7)
1. the processing method of an advanced oxidation degradation of nitrobenzene wastewater, it is characterized in that step is as follows: with waste water in gas-liquid mass transfer (contact) equipment with the abundant contact reacts of ozone, waste water after the contact reacts enters in the coupled reactor of being made up of ultrasonic wave field and electrolysis field, and the nitrobenzene matters in the waste water obtains degraded under ultrasonic wave and little electrolytic synergy.
2. the processing method of advanced oxidation degradation of nitrobenzene wastewater according to claim 1 is characterized in that waste water enters that to adopt basic cpd to regulate the pH value before the gas-liquid mass transfer (contact) equipment be 9～11.
3. the processing method of advanced oxidation degradation of nitrobenzene wastewater according to claim 1 is characterized in that waste water is 50～500L/m with the liquid gas volume ratio of ozone in gas-liquid mass transfer (contact) equipment
3, ozone concn is 8～18mg/L.
4. the device of the processing method of a realization such as claim 1 or 2 or 3 described advanced oxidation degradation of nitrobenzene wastewater, it is characterized in that comprising gas-liquid mass transfer (contact) equipment (5), gas-liquid mass transfer (contact) equipment is established inlet mouth on (5), the air outlet, fluid inlet, liquid outlet, inlet mouth connects ozonizer (6), fluid inlet connects nitrobenzene wastewater pond (1), liquid outlet connects waste water coupled reactor (15), some groups of staggered negative electrodes (11) and positive electrode (12) are set in the described waste water coupled reactor (15), form rectangular channel between each anodic-cathodic, each rectangular channel communicates successively, constitute repeatedly the waste water flow passage (13) of baffling, waste water coupled reactor (15) bottom is provided with ultrasonic generator (10).
5. the device of advanced oxidation degradation of nitrobenzene wastewater according to claim 4 is characterized in that described gas-liquid mass transfer (contact) equipment is a packing tower or rotary packed bed.
6. the device of advanced oxidation degradation of nitrobenzene wastewater according to claim 4 is characterized in that negative electrode (11) is stainless steel substrates or copper sheet, and positive electrode (12) scribbles the RuO of Ti for plumbic oxide or surface
2
7. the device of advanced oxidation degradation of nitrobenzene wastewater according to claim 4, the ultrasonic frequency that it is characterized in that ultrasonic generator (10) is 28kHz～500kHz, the ultrasonic wave sound intensity is 1W/cm
2～100W/cm
2, current density is 10mA/cm
2～40mA/cm
2
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| CN102180558B (en) * | 2011-05-12 | 2012-08-29 | 浙江东洋环境工程有限公司 | Process for treating high-concentration industrial organic wastewater by composite advanced oxidation method |
| CN102180557B (en) * | 2011-05-12 | 2012-10-17 | 浙江东洋环境工程有限公司 | Composite organic waste water advanced oxidation device |
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| CN102491491A (en) * | 2011-12-09 | 2012-06-13 | 哈尔滨工业大学 | Method for ultrasonically treating nitro-containing phenol waste water with ozone |
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| CN108658334A (en) * | 2018-06-04 | 2018-10-16 | 大连鑫恒环保科技有限公司 | The ozone ultrasonic electrolysis unit of efficient oxidation industrial wastewater |
| CN109110882B (en) * | 2018-09-12 | 2021-09-14 | 浙江海洋大学 | Method for electrochemically removing p-xylene |
| CN112499754B (en) * | 2020-12-01 | 2022-09-13 | 张家港市五湖新材料技术开发有限公司 | Nitrogenous wastewater treatment system |
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|---|---|---|---|---|
| JP2004188288A (en) * | 2002-12-10 | 2004-07-08 | Sanyo Electric Co Ltd | Water treatment method and water treatment apparatus |
| KR20050107971A (en) * | 2004-05-11 | 2005-11-16 | 이광재 | Electrolytic treatment of wastewater |
| CN2892845Y (en) * | 2006-02-17 | 2007-04-25 | 中北大学 | Equipment for processing organic waste water difficult to degradate by ozone oxidation technology |
| CN201176452Y (en) * | 2008-04-21 | 2009-01-07 | 中南大学 | Device for strengthening electrooxidation decomposition process by ultrasonic |
| CN201351131Y (en) * | 2009-01-14 | 2009-11-25 | 中北大学 | Advanced device for oxidative degradation of nitrobenzene wastewater |
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2009
- 2009-01-14 CN CN2009100736669A patent/CN101462788B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004188288A (en) * | 2002-12-10 | 2004-07-08 | Sanyo Electric Co Ltd | Water treatment method and water treatment apparatus |
| KR20050107971A (en) * | 2004-05-11 | 2005-11-16 | 이광재 | Electrolytic treatment of wastewater |
| CN2892845Y (en) * | 2006-02-17 | 2007-04-25 | 中北大学 | Equipment for processing organic waste water difficult to degradate by ozone oxidation technology |
| CN201176452Y (en) * | 2008-04-21 | 2009-01-07 | 中南大学 | Device for strengthening electrooxidation decomposition process by ultrasonic |
| CN201351131Y (en) * | 2009-01-14 | 2009-11-25 | 中北大学 | Advanced device for oxidative degradation of nitrobenzene wastewater |
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