CN211946615U - Electrochemical coupling ozone micro-nano bubble processing system - Google Patents
Electrochemical coupling ozone micro-nano bubble processing system Download PDFInfo
- Publication number
- CN211946615U CN211946615U CN201922339176.0U CN201922339176U CN211946615U CN 211946615 U CN211946615 U CN 211946615U CN 201922339176 U CN201922339176 U CN 201922339176U CN 211946615 U CN211946615 U CN 211946615U
- Authority
- CN
- China
- Prior art keywords
- micro
- nano bubble
- ozone
- processing system
- reactor
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Water Treatment By Electricity Or Magnetism (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The utility model discloses an electrochemistry coupling ozone micro-nano bubble processing system. The electrochemical coupling ozone micro-nano bubble processing system comprises an ozone generator, a micro-nano bubble generating device, a reactor main body and a voltage-stabilizing direct-current power supply. The utility model discloses utilize the anodic oxidation and the cathodic reduction in the electrochemical reaction process simultaneously, current efficiency is effectively improved. Meanwhile, aeration is carried out in the form of ozone micro-nano bubbles, so that the oxidation effect of ozone is improved, the utilization rate of oxygen by a cathode is improved, the yield of hydroxyl radicals is promoted, and the removal effect of refractory organic matters is enhanced. The utility model discloses a coupling electrochemistry oxidation and ozone oxidation's advanced oxidation technique, use nimble, easy operation, treatment effeciency height, can popularize and apply in extensive engineering.
Description
Technical Field
The utility model belongs to the industrial wastewater treatment field, more specifically relates to a micro-nano bubble processing system of electrochemistry coupling ozone.
Background
With the rapid development of economy in China, the amount of wastewater discharged into the environment by human beings is increasing day by day. Industrial wastewater is a major concern in the field of environmental science because it contains a large amount of nonbiodegradable organic substances.
The advanced oxidation technology can generate strong oxidizing free radicals, oxidize macromolecular degradation-resistant organic matters into low-toxicity or non-toxic small molecular substances, has great advantages in the aspect of processing micro organic matters such as environmental hormones and the like, and can completely mineralize or decompose most organic matters, so the advanced oxidation technology is widely researched and applied to the processing of degradation-resistant industrial wastewater. In recent years, advanced oxidation technologies such as ozone-based advanced oxidation, fenton-based advanced oxidation, electrochemical oxidation, and photocatalysis have been studied.
Among them, the electrochemical oxidation technology mainly utilizes the oxidation capacity of the anode to generate an oxidizing substance, and the reduction capacity of the cathode is not utilized. The ozone oxidation technology mainly utilizes oxygen or air discharge to generate ozone, and then utilizes the ozone to oxidize organic matters. Because the ozone generator has effective ozone preparation efficiency, the oxygen content of the generated ozone and oxygen mixed gas is up to more than 90%, and the oxygen has small removal effect on organic matters in the wastewater, thereby causing the waste of the oxygen.
The electrochemical coupling ozone can reduce oxygen in the ozone mixed gas by utilizing the reducing capability of the electrochemical cathode to generate hydrogen peroxide, and the hydrogen peroxide and the ozone generate a perhydrolysis reaction to generate hydroxyl radicals so as to improve the degradation capability of organic matters.
At present, a great deal of research is carried out at home and abroad aiming at the technology of electrochemical coupling ozone oxidation, and certain achievements are obtained. The patent application with application number 201210549472.3 discloses an in-situ electricity generation H2O2Synergistic O3An apparatus and method for treating oxidized wastewater. The invention mainly uses gas diffusion cathode to reduce oxygen to generate H2O2And is combined with O3Hydroxyl radicals generated by the reaction can efficiently remove organic matters which are difficult to degrade in water, and the method can be used for treating the organic matters which are difficult to degrade in sewage such as dye, landfill leachate and the like. The patent application with the application number of 201410336529.0 provides a device and a method for treating antibiotic wastewater by combining electrochemistry and ozone, and the complete removal of amoxicillin is realized. The patent application with the application number of 201310279516.X provides a method for removing organic pollutants in water by electrochemical cathode catalytic ozonation, wherein the first treatment is carried out at a certain ozone adding amount, and then the treatment is carried out at a certain ozone adding amount and under a cathode voltage, so that the treatment of the water polluted by organic matters to be treated is completed. Compared with single ozone treatment, the invention improves the removal rate of organic matters by 20-50%.
Although the technology of combining electrochemistry and ozone can improve the removal effect of organic matters in sewage, in the reaction process, ozone is aerated in a stainless steel aeration head or aeration disc mode, the mass transfer of ozone and oxygen is low, so that the utilization rate is limited, and the efficiency of over-ozonation reaction is reduced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the not enough of existence in the difficult degradation industrial waste water treatment process, provide a system for handling the micro-nano bubble of electrochemistry coupling ozone of difficult degradation industrial waste water, it has rational in infrastructure, novel in design, operation convenient to use, the maintenance cost is low, the operation is reliable stable, degree of automation is higher advantage relatively, can also effectively solve among the difficult degradation industrial waste water treatment electrochemical reaction negative pole effectively not utilize simultaneously, oxygen does not obtain defects such as utilization among the ozone oxidation process.
In order to achieve the above object, the utility model provides an electrochemical coupling ozone micro-nano bubble processing system, which comprises an ozone generator, a micro-nano bubble generating device, a reactor main body and a voltage-stabilizing direct-current power supply;
the ozone generator is connected with the micro-nano bubble generating device;
the micro-nano bubble generating device is connected with a water inlet at the bottom of the reactor main body;
a water outlet at the top of the reactor main body is connected with the micro-nano bubble generating device;
the reactor main body is a closed reactor, a plurality of cathodes and anodes which are distributed in a cross mode are arranged inside the closed reactor, the cathodes are connected with the negative pole of the voltage-stabilizing direct-current power supply, and the anodes are connected with the positive pole of the voltage-stabilizing direct-current power supply.
Preferably, the anode is a diamond film electrode, a metal oxide electrode or a titanium-based metal oxide coated electrode.
Preferably, the cathode is a graphite electrode, a carbon felt electrode, a graphite felt electrode or a gas diffusion electrode.
Preferably, the ozone generator and the micro-nano bubble generating device are connected through a polytetrafluoroethylene tube.
Preferably, the micro-nano bubble generating device and the reactor main body are connected through a PPR pipe.
Preferably, the reactor main body is connected with the regulated dc power supply through a cable.
Preferably, the reactor body further comprises an exhaust port disposed at the top of the reactor body and a drain port disposed at the bottom of the reactor body.
The utility model has the advantages that:
compare and only utilize single anodic oxidation or cathodic reduction in traditional electrochemical oxidation water treatment technology, the utility model discloses utilize anodic oxidation and cathodic reduction in the electrochemical reaction process simultaneously, current efficiency obtains effectively improving. Meanwhile, aeration is carried out in the form of ozone micro-nano bubbles, so that the oxidation effect of ozone is improved, the utilization rate of oxygen by a cathode is improved, the yield of hydroxyl radicals is promoted, and the removal effect of refractory organic matters is enhanced. The utility model discloses a coupling electrochemistry oxidation and ozone oxidation's advanced oxidation technique, use nimble, easy operation, treatment effeciency height, can popularize and apply in extensive engineering.
Other features and advantages of the present invention will be described in detail in the detailed description which follows.
Drawings
The above and other objects, features and advantages of the present invention will become more apparent by describing in more detail exemplary embodiments thereof with reference to the attached drawings, in which like reference numerals generally represent like parts throughout the exemplary embodiments of the present invention.
Fig. 1 shows a schematic diagram of an electrochemically coupled ozone micro-nano bubble processing system according to an embodiment of the present invention.
Description of reference numerals: the device comprises 1-an ozone generator, 2-a micro-nano bubble generating device, 3-a reactor main body, 31-a water inlet, 32-an exhaust port, 33-a water outlet, 34-a water outlet, 4-a voltage-stabilizing direct-current power supply, 5-an anode, 6-a cathode, 7-a water inlet section, 8-a backflow section and 9-a water storage tank.
Detailed Description
Preferred embodiments of the present invention will be described in more detail below. While the following describes preferred embodiments of the present invention, it should be understood that the present invention may be embodied in various forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.
The utility model provides an electrochemical coupling ozone micro-nano bubble processing system, which comprises an ozone generator, a micro-nano bubble generating device, a reactor main body and a voltage-stabilizing direct-current power supply;
the ozone generator is connected with the micro-nano bubble generating device;
the micro-nano bubble generating device is connected with a water inlet at the bottom of the reactor main body;
a water outlet at the top of the reactor main body is connected with the micro-nano bubble generating device;
the reactor main body is a closed reactor, a plurality of cathodes and anodes which are distributed in a cross mode are arranged inside the closed reactor, the cathodes are connected with the negative pole of the voltage-stabilizing direct-current power supply, and the anodes are connected with the positive pole of the voltage-stabilizing direct-current power supply.
According to the utility model, the ozone generator uses oxygen or compressed air as the air source to generate the mixed gas of oxygen and ozone.
Preferably, the anode is a diamond film electrode, a metal oxide electrode or a titanium-based metal oxide coating electrode.
Preferably, the cathode is a graphite electrode, a carbon felt electrode, a graphite felt electrode or a gas diffusion electrode.
Preferably, the ozone generator and the micro-nano bubble generating device are connected through a polytetrafluoroethylene tube, a polyvinyl chloride tube, a stainless steel tube or a ceramic ozone tube.
As a preferred scheme, the micro-nano bubble generating device and the reactor main body are connected through a polypropylene pipe, a polyvinyl chloride pipe, a rigid polyvinyl chloride pipe or a stainless steel pipe.
Preferably, the reactor main body is connected with the voltage-stabilized direct-current power supply through a cable.
Preferably, the reactor main body further comprises an exhaust port arranged at the top of the reactor main body and a water outlet arranged at the bottom of the reactor main body, gas generated in the reaction process is exhausted through the exhaust port, and the water outlet is mainly used for emptying wastewater in the reactor during maintenance.
The wastewater treatment method adopting the electrochemical coupling ozone micro-nano bubble treatment system comprises the following steps:
1) get into micro-nano bubble generating device with the ozone mist that waste water and ozone generator produced together, the proportion of the inflow of ozone mist and the inflow of waste water is 1: 8-10;
2) wastewater containing ozone and oxygen microbubbles generated by the micro-nano bubble generating device enters the main reactor for reaction;
3) and after the reaction is finished, discharging a first part of wastewater from a water outlet at the top of the reactor main body, optionally refluxing a second part of wastewater to the micro-nano bubble generating device, and repeating the step 2) for enhancing the mass transfer process between the wastewater and the electrode plate and the mixed mass transfer process between reactants.
According to the utility model discloses, in step 3), if electrochemistry coupling ozone micro-nano bubble processing system's handling capacity can satisfy the production needs completely, then need not flow back the second part waste water to micro-nano bubble generating device and repeat step 2). When the amount of the wastewater is large, although the wastewater treated by the steps can reach the standard, a second part of the wastewater can be selected to flow back to the micro-nano bubble generating device and repeat the step 2), so that the content of pollutants in the whole wastewater is further reduced.
Preferably, in the step 1), the COD concentration of the wastewater is 150-1500 mg/L; the dosage of the ozone is 5-50mg/L relative to the wastewater.
As a preferable scheme, when the wastewater treatment is carried out, the running current is 200-600A, and the reaction time is 0.5-5 h. By adjusting the reaction time, the degradation-resistant organic wastewater with different concentrations can be treated. When the water inlet concentration is higher, the reaction time is controlled by controlling the ratio of the water outlet reflux to the water inlet, so that the expected treatment effect is achieved.
According to the utility model, in the step 2), the anode is subjected to oxidation reaction, so that not only can free radicals be generated to oxidize and degrade organic matters, but also the organic matters can be directly oxidized; the reduction reaction of oxygen on the cathode generates hydrogen peroxide, and the hydrogen peroxide and ozone generate the ozonization reaction to generate free radical oxidation decomposition organic matter.
According to the utility model, on one hand, the ozone in the form of micro-nano bubbles has stronger oxidation capacity to organic matters compared with the ozone aeration of the traditional aeration disc; on the other hand, the oxygen in the form of micro-nano bubbles also accelerates the mass transfer between the oxygen and the solution, and promotes the rate of hydrogen peroxide production by the reduction of the oxygen at the cathode, thereby accelerating the degradation rate of organic matters.
Fig. 1 shows a schematic diagram of an electrochemically coupled ozone micro-nano bubble processing system according to an embodiment of the present invention. The embodiment of the utility model provides an electrochemical coupling ozone micro-nano bubble processing system who adopts refers to figure 1.
As shown in fig. 1, the electrochemical coupling ozone micro-nano bubble processing system comprises an ozone generator 1, a micro-nano bubble generating device 2, a reactor main body 3 and a voltage-stabilizing direct-current power supply 4; the ozone generator 1 is connected with the micro-nano bubble generating device 2 through a polytetrafluoroethylene tube; the micro-nano bubble generating device 2 is connected with a water inlet 31 at the bottom of the reactor main body 3 through a polypropylene pipe; a water outlet 33 at the top of the reactor main body 3 is connected with the micro-nano bubble generating device 2; the reactor main body 3 is connected with a voltage-stabilizing direct-current power supply 4 through a cable. The reactor main body is a closed reactor, a plurality of cathodes 6 and anodes 5 which are distributed in a cross mode are arranged inside the reactor main body, the cathodes 6 are connected with the negative pole of the voltage-stabilizing direct-current power supply 4, and the anodes 6 are connected with the positive pole of the voltage-stabilizing direct-current power supply 4. The reactor body 2 is provided at the bottom with a drain port 34 and at the top with an exhaust port 32. And the water storage tank 9 is connected with the micro-nano bubble generating device 2. The anode material is a titanium ruthenium mesh electrode, and the cathode material is a graphite felt electrode.
The adopted wastewater treatment method comprises the following steps:
1) the waste water (through the section of intaking 7) in the storage water tank 9 and the ozone mist that ozone generator 1 produced get into micro-nano bubble generating device 2, the ratio of the inflow of ozone mist and the inflow of waste water is 1: 9;
2) wastewater containing ozone and oxygen microbubbles generated by the micro-nano bubble generating device 2 enters the main reactor 3 for reaction;
3) and after the reaction is finished, controlling 50% of wastewater to be discharged from a water outlet at the top of the reactor main body, and refluxing the other 50% of wastewater to the micro-nano bubble generating device through the refluxing section 8 and repeating the step 2) for enhancing the mass transfer process between the wastewater and the electrode plate and the mixed mass transfer process between reactants.
Example 1:
the sludge anaerobic digestion liquid of a certain sewage treatment plant is subjected to anaerobic ammonia oxidation to remove ammonia nitrogen, and then organic matters which are difficult to biodegrade are left. The direct return of the water to the water plant causes the water outlet of the water plant to exceed the standard. The water is used as raw water and is treated by the electrochemical coupling ozone micro-nano bubble treatment system.
COD of raw water is 1000mg/L, ammonia nitrogen concentration is 50-80mg/L, BOD580-100mg/L, low B/C and poor biodegradability. The electrochemical coupling ozone micro-nano bubble device is adopted to treat raw water. The pH of the influent water was about 8.0, adjusted to about 7.0, the current intensity was adjusted to 450A, the ozone concentration was adjusted to 40mg/L (relative to the raw water), and the reaction time was 3 hours. After the reaction is finished, the COD of the effluent is reduced to 150-250mg/L, and the effluent can return to a water plant for water inlet, so that the effluent of the water plant cannot exceed the standard.
Example 2:
after the landfill leachate of a certain landfill leachate treatment plant is subjected to anaerobic digestion, anaerobic ammonia oxidation and coagulation treatment, ammonia nitrogen is reduced to 25mg/L, COD concentration is 650mg/L, and biodegradability is poor.
The coagulated landfill leachate is used as raw water and treated by the electrochemical coupling ozone micro-nano bubble treatment system. The pH value of the inlet water is adjusted to about 7.0, the current intensity is adjusted to 300A, the ozone concentration is adjusted to 25mg/L (relative to the raw water), and the reaction time is 4 h. After the reaction is finished, the COD of the effluent is reduced to below 60mg/L, and the effluent reaches the discharge standard.
Can see through above-mentioned two embodiments, adopt the utility model discloses a micro-nano bubble device of electrochemistry coupling ozone can effectively improve current efficiency to ensure that the COD concentration in the play aquatic can reach anticipated effect, can satisfy the actual motion needs.
While various embodiments of the present invention have been described above, the above description is intended to be illustrative, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.
Claims (8)
1. An electrochemical coupling ozone micro-nano bubble processing system is characterized by comprising an ozone generator, a micro-nano bubble generating device, a reactor main body and a voltage-stabilizing direct-current power supply;
the ozone generator is connected with the micro-nano bubble generating device;
the micro-nano bubble generating device is connected with a water inlet at the bottom of the reactor main body;
a water outlet at the top of the reactor main body is connected with the micro-nano bubble generating device;
the reactor main body is a closed reactor, a plurality of cathodes and anodes which are distributed in a cross mode are arranged inside the closed reactor, the cathodes are connected with the negative pole of the voltage-stabilizing direct-current power supply, and the anodes are connected with the positive pole of the voltage-stabilizing direct-current power supply.
2. The electrochemically coupled ozone micro-nano bubble processing system of claim 1, wherein the anode is a diamond film electrode, a metal oxide electrode, or a titanium-based metal oxide coated electrode.
3. The electrochemically coupled ozone micro-nano bubble processing system of claim 1, wherein the cathode is a graphite electrode, a carbon felt electrode, a graphite felt electrode, or a gas diffusion electrode.
4. The electrochemically coupled ozone micro-nano bubble processing system of claim 1, wherein the ozone generator and the micro-nano bubble generating device are connected by a polytetrafluoroethylene tube, a polyvinyl chloride tube, a stainless steel tube, or a ceramic ozone tube.
5. The electrochemically coupled ozone micro-nano bubble processing system according to claim 1, wherein the micro-nano bubble generating device and the reactor main body are connected through a polypropylene pipe, a polyvinyl chloride pipe, a rigid polyvinyl chloride pipe or a stainless steel pipe.
6. The electrochemically coupled ozone micro-nano bubble processing system according to claim 1, wherein the reactor main body and the voltage-stabilized direct current power supply are connected through a cable.
7. The electrochemically coupled ozone micro-nano bubble processing system of claim 1, wherein the reactor body further comprises an exhaust port disposed at a top of the reactor body.
8. The electrochemically coupled ozone micro-nano bubble processing system of claim 1, wherein the reactor body further comprises a drain port disposed at a bottom of the reactor body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339176.0U CN211946615U (en) | 2019-12-24 | 2019-12-24 | Electrochemical coupling ozone micro-nano bubble processing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922339176.0U CN211946615U (en) | 2019-12-24 | 2019-12-24 | Electrochemical coupling ozone micro-nano bubble processing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211946615U true CN211946615U (en) | 2020-11-17 |
Family
ID=73187083
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922339176.0U Active CN211946615U (en) | 2019-12-24 | 2019-12-24 | Electrochemical coupling ozone micro-nano bubble processing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211946615U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845057A (en) * | 2019-12-24 | 2020-02-28 | 北京城市排水集团有限责任公司 | Electrochemical coupling ozone micro-nano bubble treatment system and wastewater treatment method |
| CN112960818A (en) * | 2021-03-03 | 2021-06-15 | 深圳市长隆科技有限公司 | Three-phase electrochemical water treatment device for electrochemical-ozone coupling oxidation |
| CN113184955A (en) * | 2021-05-24 | 2021-07-30 | 湖南农业大学 | Ozone-membrane electrode coupling reaction system and method for treating organic pesticide wastewater |
-
2019
- 2019-12-24 CN CN201922339176.0U patent/CN211946615U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110845057A (en) * | 2019-12-24 | 2020-02-28 | 北京城市排水集团有限责任公司 | Electrochemical coupling ozone micro-nano bubble treatment system and wastewater treatment method |
| CN112960818A (en) * | 2021-03-03 | 2021-06-15 | 深圳市长隆科技有限公司 | Three-phase electrochemical water treatment device for electrochemical-ozone coupling oxidation |
| CN113184955A (en) * | 2021-05-24 | 2021-07-30 | 湖南农业大学 | Ozone-membrane electrode coupling reaction system and method for treating organic pesticide wastewater |
| CN113184955B (en) * | 2021-05-24 | 2023-12-08 | 湖南农业大学 | Ozone-membrane electrode coupling reaction system and method for treating organic pesticide wastewater |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110845057A (en) | Electrochemical coupling ozone micro-nano bubble treatment system and wastewater treatment method | |
| CN102139990B (en) | Ultrasonic combined waste water treatment process and system of refuse leachate | |
| CN109896598B (en) | Preparation method of electro-Fenton cathode material based on carbon felt supported iron nanoparticles and application of electro-Fenton cathode material in degradation of organic pollutants in water | |
| CN211946615U (en) | Electrochemical coupling ozone micro-nano bubble processing system | |
| CN105439258A (en) | Wastewater treatment method through generating H2O2 with in situ electricity to cooperate with O3 to oxidize | |
| CN102874960A (en) | Device and method for treating high-salinity and degradation-resistant organic industrial waste water by performing photoelectrical synchro coupling and catalytic oxidation on three-dimensional particles | |
| CN101734750A (en) | Method for performing electrochemical advanced treatment on landfill leachate based on ultraviolet reinforcement | |
| CN201567249U (en) | Ultrasonic electrochemical wastewater treatment device | |
| CN204752450U (en) | A gentle catalytic oxidation device for waste water treatment | |
| US20240140848A1 (en) | Electrochemical nitrogen and phosphorus removal device and method | |
| CN108358350B (en) | Advanced treatment device and method for high-speed rail excrement collecting wastewater | |
| CN104276734A (en) | Electrochemical oxidation-denitriding biological aerated filter coupled reactor | |
| CN105731604A (en) | Advanced treatment method for electroplating wastewater | |
| CN108911355B (en) | Landfill leachate MBR effluent treatment method and system | |
| CN112723494B (en) | Water treatment technology for promoting synchronous removal of refractory organic matters and nitrogen elements by electro-activated persulfate | |
| CN113735227A (en) | Aeration type three-dimensional electro-Fenton fluidized bed | |
| CN111170567B (en) | Integrated electrochemical coupling membrane aeration biomembrane reactor and application thereof | |
| CN108996810B (en) | High-concentration degradation-resistant organic wastewater zero discharge system and treatment method | |
| CN104529019B (en) | Electric catalytic combined processing method suitable for high-salinity refractory wastewater | |
| CN105936571A (en) | Method for processing polyurethane (PU) synthetic leather wastewater | |
| CN214141733U (en) | Wastewater treatment device for generating H2O2 in situ by utilizing O3 tail gas in water treatment | |
| CN105130131A (en) | Treatment system and method of landfill refuse leachate | |
| CN112499754B (en) | Nitrogenous wastewater treatment system | |
| CN110921980B (en) | Electrochemical enhanced ozone-biological activated carbon water treatment equipment and method for treating water by using same | |
| CN113479976A (en) | Integrated wastewater treatment device and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |