CN212833012U - Device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation - Google Patents
Device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation Download PDFInfo
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- CN212833012U CN212833012U CN202021916792.4U CN202021916792U CN212833012U CN 212833012 U CN212833012 U CN 212833012U CN 202021916792 U CN202021916792 U CN 202021916792U CN 212833012 U CN212833012 U CN 212833012U
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Abstract
The utility model relates to a device of air water thoughtlessly dissolve activation is realized through secondary hydrodynamic cavitation and ultrasonic cavitation, include: an ultrasonic, hydrodynamic cavitation and catalytic oxidation device, a hydrodynamic cavitation and catalytic oxidation device and a hydrodynamic cavitation device; the ultrasonic, hydrodynamic cavitation and catalytic oxidation type device comprises: a waste water pump, an ultrasonic cavitator, a power supply, a primary high-speed ejector, a circulating pump and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing area, and the upper part of the catalytic oxidation tower is a catalyst packing area. The utility model has the advantages that: the utility model discloses a device for leading device of waste water advanced oxidation reactor for processing can make up integratively with advanced oxidation reaction main equipment, as a link of main equipment, also can regard as a leading equipment alone for leading gas-liquid mixing of leading when waste water carries out ozone catalytic oxidation, ozone dissolves, hydrodynamic cavitation (activation energy), uniform water distribution, is the treatment effect core member who guarantees waste water ozone catalytic oxidation reactor.
Description
Technical Field
The utility model belongs to the environmental catalysis field especially relates to a device of realizing air water thoughtlessly dissolving activation through secondary hydrodynamic cavitation and ultrasonic cavitation.
Background
The effect of advanced oxidation, such as catalytic ozonation, of organic wastewater depends on the solubility of ozone in water and the amount of ozone decomposed into free radicals, so that the solubility of ozone in water needs to be improved and ensured, and in order to ensure the effect of catalytic ozonation of organic wastewater, the links of sufficient mixing and dissolution of gas and liquid and energy activation of ozone in inlet water are very important.
The ozone catalytic oxidation method is one of advanced oxidation, and is based on that ozone and water generate hydroxyl radicals under the action of a catalyst, and the oxidation-reduction potential of the hydroxyl radicals is very high, so that the aromatic hydrocarbon organic matters can be degraded in an open loop manner; secondly, if jet flow can be passed through in the premixing process and hydrodynamic cavitation is carried out on the wastewater, ozone and water can be further enabled to generate more superoxide radicals and hydroxyl radicals, so that the method is beneficial to carrying out chain pre-breaking and pre-oxidation treatment on the organic wastewater in the premixing section, and lays a foundation for providing favorable conditions for subsequent catalytic oxidation of the rear end of the organic wastewater until the organic wastewater is completely mineralized.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming the deficiencies in the prior art and providing a device for realizing the mixing and dissolving activation of air and water through secondary hydrodynamic cavitation and ultrasonic cavitation.
The device for realizing gas-water mixing and activating by secondary hydrodynamic cavitation and ultrasonic cavitation comprises: ultrasonic, hydrodynamic cavitation and catalytic oxidation devices and hydrodynamic cavitation devices.
Preferably, the ultrasonic + hydrodynamic cavitation + catalytic oxidation type device comprises: a waste water pump, an ultrasonic cavitator, a power supply, a primary high-speed ejector, a circulating pump and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone, and the upper part of the catalytic oxidation tower is a catalyst packing zone; the upper part of the gas-liquid mixing zone is provided with a water inlet chamber, the wastewater pump is connected with an inlet pipeline of the ultrasonic cavitator, an outlet pipeline of the ultrasonic cavitator is connected with the gas-liquid mixing zone, a wastewater outlet of the gas-liquid mixing zone is connected with an inlet of the circulating booster pump, an outlet of the circulating booster pump is connected with an inlet of the primary high-speed ejector, and an outlet of the primary high-speed ejector is connected with the water inlet chamber of the gas-liquid mixing zone; the water inlet chamber of the gas-liquid mixing zone is cylindrical, and a plurality of groups of secondary jet nozzles are arranged in the tangential direction (clockwise or anticlockwise) of the circumference of the water inlet chamber, so that secondary jet cavitation and fluid rotational flow of fluid are realized; the secondary jet nozzle is connected to the outlet of the pipeline of the ultrasonic cavitator, and the inlet of the pipeline of the ultrasonic cavitator is connected to the waste water pump; a separation section (an ozone catalytic oxidation fixed bed) is arranged between the water inlet chamber and the catalyst packing area, and a water distributor is arranged on the separation section; the two primary high-speed ejectors are symmetrically arranged around the catalytic oxidation tower, the catalyst packing area is cylindrical, a plurality of groups of secondary jet nozzles are arranged in the tangential direction (clockwise or anticlockwise) of the circumference of the catalyst packing area, inlets of all secondary jet nozzles arranged in the tangential direction (clockwise or anticlockwise) of the circumference of the catalyst packing area are connected into outlets of the two primary high-speed ejectors, inlets of the two primary high-speed ejectors are connected into an outlet of a circulating booster pump, inlets of the circulating booster pump are connected into an outlet pipeline of an ultrasonic cavitator, and an inlet pipeline of the ultrasonic cavitator is connected into a waste water pump.
Preferably, the hydrodynamic cavitation + catalytic oxidation type device comprises: the system comprises a waste water pump, a circulating booster pump, a main ejector, a static mixer, an auxiliary ejector and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone, and the upper part of the catalytic oxidation tower is a catalyst packing zone; a separation section is arranged between the catalyst packing area and the gas-liquid mixing area, and a water distributor is arranged on the separation section; a branch is divided from a water supply pipeline at the outlet of the waste water pump, a circulating booster pump is additionally arranged on the branch, the outlet of the booster pump is connected with a main ejector, a static mixer is arranged on the main pipeline of the water supply pipeline at the outlet of the waste water pump, and an outlet pipeline of the static mixer is connected into a catalytic oxidation tower; and a wastewater outlet of the gas-liquid mixing zone is connected with an inlet of the circulating booster pump, an outlet of the circulating booster pump is connected with an inlet of the auxiliary ejector, and an outlet of the auxiliary ejector is connected with a water inlet chamber of the gas-liquid mixing zone.
Preferably, the hydrodynamic cavitation type device includes: a waste water pump, a circulating booster pump, a main ejector, a static mixer and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone, and the upper part of the catalytic oxidation tower is a catalyst packing zone; a separation section is arranged between the catalyst packing area and the gas-liquid mixing area, and a water distributor is arranged on the separation section; a branch is divided from a wastewater pump outlet water supply pipeline, a circulating booster pump is additionally arranged on the branch, the outlet of the booster pump is connected with a main ejector, a static mixer is arranged on the main pipeline of the wastewater pump outlet water supply pipeline, and the outlet pipeline of the static mixer is connected into a catalytic oxidation tower.
Preferably, the ultrasonic cavitators are connected with a power supply, the ultrasonic cavitators are a plurality of combined ultrasonic sources, the combination and the input power of the ultrasonic sources can be adjusted according to the wastewater quantity and the intake COD equivalent, and the input number and the input power of the ultrasonic sources can be adjusted according to the intake quantity and the COD so as to meet the requirements of the targets of pretreatment, oxidation chain scission and degradation.
Preferably, the separation section is in a form that a trapezoidal winding dead water cap is arranged on a porous plate, so that uniform water distribution of water discharged from the mixing chamber is ensured, bias flow of fluid is prevented, and loss of catalytic filler is avoided.
The utility model has the advantages that:
1) the utility model discloses a device for leading device of waste water advanced oxidation reactor for processing can make up integratively with advanced oxidation reaction main equipment, as a link of main equipment, also can regard as a leading equipment alone for leading gas-liquid mixing of leading when waste water carries out ozone catalytic oxidation, ozone dissolves, hydrodynamic cavitation (activation energy), uniform water distribution, is the treatment effect core member who guarantees waste water ozone catalytic oxidation reactor.
2) The utility model discloses a method and a device for realizing gas-liquid premixing, dissolution and initial activation through combination of hydrodynamic cavitation and ultrasonic cavitation or alone, which lay a favorable foundation for subsequent ozone heterogeneous catalytic oxidation degradation of organic matters
Drawings
FIG. 1 is a schematic diagram of an ultrasonic + hydrodynamic cavitation + catalytic oxidation type apparatus;
FIG. 2 is a schematic diagram of a hydrodynamic cavitation + catalytic oxidation type apparatus;
FIG. 3 is a schematic diagram of a hydrodynamic cavitation type apparatus.
FIG. 4 is a flow chart of catalytic oxidation reaction of ozone.
Description of reference numerals: the device comprises a waste water pump 1, an ultrasonic cavitator 2, a power supply 3, a catalyst filler zone 4, a water distributor 5, a gas-liquid mixing zone 6, a primary high-speed ejector 7, a secondary jet nozzle 8, a circulating booster pump 9, a main jet device 10, a static mixer 11 and an auxiliary jet device 12.
Detailed Description
The present invention will be further described with reference to the following examples. The following description of the embodiments is merely provided to aid in understanding the invention. It should be noted that, for those skilled in the art, the present invention can be modified in several ways without departing from the principle of the present invention, and these modifications and modifications also fall into the protection scope of the claims of the present invention.
The utility model relates to a set of device that is used for ozone gas and waste water to carry out intensive mixing, dissolve, external field activation (hydrodynamic cavitation and ultrasonic cavitation), the device includes the ejector of a two-phase flow (gaseous phase and liquid phase), vortex intensification mixing nozzle (secondary jet nozzle), water inlet ultrasonic transducer (ultrasonic cavitator) and circulation booster pump, and the tangential arrangement of incident nozzle, the bottom uniform water distribution device (water-locator 5) of ozone catalytic oxidation fixed bed, the purpose is furthest through the hydrodynamic cavitation of water ejector and the intensive mixing cavitation of secondary jet nozzle, dissolve gaseous state ozone in waste water with the micro-nano bubble, and under hydrodynamic cavitation and ultrasonic cavitation's effect, the micro-bubble gathers energy and then explodes, produce superoxide radical and hydroxyl radical, initiate chain reaction, carry out the preoxidation chain scission to the macromolecule of organic pollutant in the waste water, provides conditions for further degrading organic matters and completely mineralizing by subsequent catalytic oxidation. The device can be arranged at the water inlet section of the catalytic oxidation tower, and also can be independently arranged at the front end of the catalytic oxidation tower as independent equipment. After gas and liquid are mixed, the mixture is uniformly distributed outside the catalytic oxidation tower, or a water inlet section of a re-catalytic oxidation tower, such as a mixing zone at the bottom of a reaction fixed bed, is uniformly mixed with sewage inlet water subjected to ultrasonic irradiation by a water inlet pump due to the cavitation action of a jet device, and then external field (ultrasonic) activation is carried out in the mixing zone to generate more free radicals, and a screen is arranged at the upper part of the mixing zone to uniformly distribute water so as to ensure that the gas and water inlet of the fixed bed is uniformly distributed without bias flow.
The utility model discloses a to different treatment capacities, two kinds of methods and the technology combination of the gas that the demand of different organic waste water concentrations of intaking corresponds, liquid pre-mixing solution. The COD content of the organic wastewater with different concentrations is different, when the degradation is carried out by adopting the ozone heterogeneous catalytic oxidation, the treatment amount is different, the water outlet requirement is different, the required ozone amount is different, and the oxygen amount pumped by the ejector is matched with a booster pump. The pretreatment before the catalytic oxidation treatment of the ozone can effectively improve the treatment effect of the subsequent catalytic oxidation of the ozone. The catalytic oxidation of ozone in waste water containing macromolecular aromatic hydrocarbon organic matter can break the chain into low molecular organic matter, and is mainly based on that ozone and water generate hydroxyl radical under the action of catalyst, so as to initiate a series of chain reaction.
As an example, the utility model discloses the method has adopted three kinds of different hydrodynamic cavitation modes (the supersound of figure 1 + hydrodynamic cavitation + catalytic oxidation type device, the hydrodynamic cavitation of figure 2 + catalytic oxidation type device and the hydrodynamic cavitation type device of figure 3), combines together with ultrasonic cavitation, makes ozone fully mix with waste water, dissolves to through cavitation and activation, make the preliminary activation fracture of organic matter macromolecular chain realization before carrying out ozone catalytic degradation in the waste water.
The first is to treat the large flow rate, about 80-110 m3The ozone heterogeneous catalytic oxidation tower has high COD in the inlet water to be treated (about 1000mg/L or more), and the COD in the outlet water after the treatment of the waste water is required to be at least below 500 mg/L. See figure 1 for details. The ultrasonic and hydraulic cavitation process with ozone and waste water pre-mixed and pre-activatedThere are two types of combination, fig. 1(a) and 1(b) are type one, and fig. 1(c) is type two.
FIG. 1(a) and FIG. 1(b) represent type one, the type one is that a wastewater pump pumps wastewater into a pipeline which is provided with a plurality of groups of ultrasonic transducers with the same frequency and adjustable power for ultrasonic cavitation, so that the influent water generates a certain amount of free radicals (hydroxyl free radicals) to activate macromolecular organic matters in the wastewater under the action of the ultrasonic cavitation, the wastewater then enters a mixing zone of a catalytic oxidation tower to be fully mixed with a gas-liquid mixture of ozone and wastewater sucked by hydraulic secondary cavitation of an ejector, part of the wastewater in the mixing zone is subjected to the hydraulic cavitation of a circulating booster pump and the ejector to realize primary mixing, dissolution and cavitation (activation) of the wastewater and ozone gas, and after the wastewater is sprayed into a water inlet chamber of the catalytic oxidation tower, incident nozzles are arranged along the tangential direction (clockwise or counterclockwise) on the upper circumference of a cylindrical mixing device to realize secondary cavitation and fluid swirling, ozone is fully mixed, dissolved and re-cavitated (activated) in the wastewater, during the process, energy accumulated and exploded due to hydrodynamic cavitation causes hydrogen free radicals, hydroxyl free radicals and the like generated by the breakage of water molecule bonding bonds, H2O < - >, H < + >, OH, O3 < - >, O < + > O2 carry out primary oxidative degradation on organic pollutants in water, and then fully mixed gas-liquid fluid enters a catalytic filler layer of a catalytic oxidation tower through a porous plate water cap to carry out catalytic oxidation reaction of the ozone, as shown in detail in figure 4;
the device comprises a jet device (a primary high-speed jet device) with two-phase flow (gas phase and liquid phase), a vortex intensified mixing nozzle (a secondary jet nozzle), an inflow ultrasonic transducer, a circulating booster pump and a bottom uniform water distribution device of an ozone catalytic oxidation fixed bed, and aims to dissolve gaseous ozone in waste water in the form of micro-nano bubbles through the hydrodynamic cavitation action of the jet device and the intensified mixing and secondary cavitation action of the secondary nozzle to the maximum extent, the gas-liquid mixture is uniformly outside a catalytic oxidation reaction tank, a water inlet section of a re-reaction tank (a water inlet section of the catalytic oxidation tower) can also be arranged, such as a mixing area at the bottom of the reaction fixed bed, and the gaseous ozone and the waste water subjected to ultrasonic irradiation by a water inlet pump are uniformly mixed due to the cavitation action of the jet device, and then external field (ultrasonic cavitation) activation is carried out in the mixing area to generate more free radicals, the upper part is provided with a screen (a perforated plate is provided with a water cap) for uniform water distribution, so as to ensure that the air water of the fixed bed is uniformly distributed without bias flow.
The second type is directed to the large treatment flow, about 110m3/h, see fig. 1(c), and is more suitable for the oxidation tower with larger diameter. When the diameter of the oxidation tower is large, in order to ensure that the gas-water mixture discharged from the ejector is sprayed into the oxidation tower to distribute water uniformly, a circulating booster pump is adopted for two water ejectors which are symmetrically arranged around the oxidation tower, and tangential incidence is adopted after the water ejectors enter the oxidation tower, so that the water flow in a mixing area forms a rotational flow which is in an internal rotational flow stirring state, further the uniform mixing with the inlet water is strengthened, and the hydrodynamic cavitation is used for carrying out primary activation and chain breaking on macromolecular organic matters in the wastewater.
The second is directed at the energy-saving hydrodynamic cavitation premixing, dissolving and activating device with medium treatment capacity, as shown in fig. 2 and fig. 3, the treatment flow is about 60-80 m3/h, the COD fluctuation of inlet water is large, and the COD removal also fluctuates. The ozone suction amount is adjusted according to the water inlet COD, the process shown in figure 2 is that a branch is divided from a water supply pipeline at the outlet of a wastewater inlet pump, a pipeline booster pump is additionally arranged on the branch, an ejector is connected to the outlet of the booster pump, ozone is sucked from the ejector and mixed with wastewater, then the ozone returns to a main wastewater pipeline through a pipeline static mixer arranged on the water supply main pipeline to be uniformly mixed with the main wastewater, the ozone and the wastewater can be uniformly mixed with the main pipeline wastewater with a large diameter, and then the ozone and the wastewater enter an oxidation tower together. The two ejectors can be operated simultaneously or singly, and completely depend on the inflow water quantity and the inflow COD concentration, when the two ejectors are both large, the ozone demand is large, the two ejectors are fully opened, and when the ozone demand is small, one ejector is independently operated, so that the energy-saving operation mode is realized.
Fig. 3 only cancels jet suction of the circulating pressurization part in fig. 2, is suitable for ozone suction amount with low COD and retains an ejector of a main loop bypass, and can also cancel the ejector of the main loop bypass and retain the ejector of the circulating pressurization part.
Claims (6)
1. The utility model provides a device that realizes air water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation which characterized in that includes: ultrasonic, hydrodynamic cavitation and catalytic oxidation devices and hydrodynamic cavitation devices.
2. The device for realizing gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation according to claim 1, which is characterized in that: the ultrasonic, hydrodynamic cavitation and catalytic oxidation type device comprises: the device comprises a waste water pump (1), an ultrasonic cavitator (2), a power supply (3), a primary high-speed ejector (7), a circulating booster pump (9) and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone (6), and the upper part of the catalytic oxidation tower is a catalyst packing zone (4);
a water inlet chamber is arranged at the upper part of the gas-liquid mixing zone (6), the waste water pump (1) is connected with an inlet pipeline of the ultrasonic cavitator (2), an outlet pipeline of the ultrasonic cavitator (2) is connected with the gas-liquid mixing zone (6), a waste water outlet of the gas-liquid mixing zone (6) is connected with an inlet of a circulating booster pump (9), an outlet of the circulating booster pump (9) is connected with an inlet of a primary high-speed ejector (7), and an outlet of the primary high-speed ejector (7) is connected with the water inlet chamber of the gas-liquid mixing zone (6); a water inlet chamber of the gas-liquid mixing area (6) is cylindrical, and a plurality of groups of secondary jet nozzles (8) are arranged in the tangential direction of the circumference of the water inlet chamber; the secondary jet nozzle (8) is connected to the pipeline outlet of the ultrasonic cavitator (2), and the pipeline inlet of the ultrasonic cavitator (2) is connected to the waste water pump (1);
a separation section is arranged between the water inlet chamber and the catalyst packing area (4), and a water distributor (5) is arranged on the separation section; two primary high-speed ejectors (7) are symmetrically arranged around a catalytic oxidation tower, a catalyst packing area (4) is cylindrical, a plurality of groups of secondary jet nozzles (8) are arranged in the tangential direction of the circumference of the catalyst packing area (4), inlets of all secondary jet nozzles (8) arranged in the tangential direction of the circumference of the catalyst packing area (4) are respectively connected into outlets of the two primary high-speed ejectors (7), inlets of the two primary high-speed ejectors (7) are respectively connected into an outlet of a circulating booster pump (9), an inlet of the circulating booster pump (9) is connected into an outlet pipeline of an ultrasonic cavitator (2), and an inlet pipeline of the ultrasonic cavitator (2) is connected into a waste water pump (1).
3. The apparatus for gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation as claimed in claim 1, wherein said hydrodynamic cavitation + catalytic oxidation type apparatus comprises: the system comprises a waste water pump (1), a circulating booster pump (9), a main ejector (10), a static mixer (11), an auxiliary ejector (12) and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone (6), and the upper part of the catalytic oxidation tower is a catalyst packing zone (4); a separation section is arranged between the catalyst packing area (4) and the gas-liquid mixing area (6), and a water distributor (5) is arranged on the separation section; a branch is divided from a water supply pipeline at the outlet of the wastewater pump (1), a circulating booster pump (9) is additionally arranged on the branch, the outlet of the booster pump is connected with a main ejector (10), a static mixer (11) is arranged on the main pipeline of the water supply pipeline at the outlet of the wastewater pump (1), and an outlet pipeline of the static mixer (11) is connected into a catalytic oxidation tower; a wastewater outlet of the gas-liquid mixing area (6) is connected with an inlet of a circulating booster pump (9), an outlet of the circulating booster pump (9) is connected with an inlet of an auxiliary ejector (12), and an outlet of the auxiliary ejector (12) is connected with a water inlet chamber of the gas-liquid mixing area (6).
4. The apparatus for gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation as claimed in claim 1, wherein the hydrodynamic cavitation type apparatus comprises: the system comprises a waste water pump (1), a circulating booster pump (9), a main ejector (10), a static mixer (11) and a catalytic oxidation tower; the lower part of the catalytic oxidation tower is a gas-liquid mixing zone (6), and the upper part of the catalytic oxidation tower is a catalyst packing zone (4); a separation section is arranged between the catalyst packing area (4) and the gas-liquid mixing area (6), and a water distributor (5) is arranged on the separation section; a branch is divided from an outlet water supply pipeline of the waste water pump (1), a circulating booster pump (9) is additionally arranged on the branch, an outlet of the booster pump is connected with a main ejector (10), a static mixer (11) is arranged on the main pipeline of the outlet water supply pipeline of the waste water pump (1), and an outlet pipeline of the static mixer (11) is connected into the catalytic oxidation tower.
5. The device for realizing gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation according to claims 2 to 4, characterized in that: the ultrasonic cavitators (2) are connected to the power supply (3), and the ultrasonic cavitators (2) are a plurality of combined ultrasonic sources.
6. The device for realizing gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation according to claims 2 to 4, characterized in that: the separation section is a porous plate and is provided with a trapezoidal wound dead water cap.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960523A (en) * | 2020-09-04 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation |
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2020
- 2020-09-04 CN CN202021916792.4U patent/CN212833012U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111960523A (en) * | 2020-09-04 | 2020-11-20 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water mixing and activating through secondary hydrodynamic cavitation and ultrasonic cavitation |
| CN111960523B (en) * | 2020-09-04 | 2023-12-12 | 浙江浙能技术研究院有限公司 | Method and device for realizing gas-water miscible activation through secondary hydrodynamic cavitation and ultrasonic cavitation |
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