CN217148695U - Micro-interface enhanced ultra-efficient wastewater ozone treatment device - Google Patents
Micro-interface enhanced ultra-efficient wastewater ozone treatment device Download PDFInfo
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- CN217148695U CN217148695U CN202122752190.0U CN202122752190U CN217148695U CN 217148695 U CN217148695 U CN 217148695U CN 202122752190 U CN202122752190 U CN 202122752190U CN 217148695 U CN217148695 U CN 217148695U
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- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 title claims abstract description 150
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- 238000004065 wastewater treatment Methods 0.000 abstract description 10
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- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
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Abstract
The utility model provides a super high-efficient waste water ozone treatment device is reinforceed to little interface, include: an ozone generator and a reaction tower; the middle part of the reaction tower is provided with a partition plate; a first treatment area is arranged above the partition plate, and a second treatment area is arranged below the partition plate; the side wall of the first treatment area is connected with a waste water pipeline; a first micro interface unit is arranged in the first processing area, and a second micro interface unit is arranged in the second processing area; an inlet of the ozone generator is connected with an oxygen pipeline, and an outlet of the ozone generator is connected with the first micro-interface unit and the second micro-interface unit respectively; an overflow pipe is arranged in the first treatment area, penetrates through the partition plate and is communicated with the first treatment area and the second treatment area. The utility model discloses a super high-efficient waste water ozone treatment plant is reinforceed to little interface overall structure is simple, can effectively improve the purification treatment effect to waste water, and can realize the high-efficient utilization to ozone to the wastewater treatment cost has been reduced.
Description
Technical Field
The utility model relates to a waste water treatment technology field particularly, relates to a super high-efficient waste water ozone treatment device is reinforceed to little interface.
Background
The water resource in China is in short supply, and with the rapid development of industry, the types and the amount of wastewater are rapidly increased, the pollution to water bodies is increasingly wide and serious, and the water environment faces an extremely severe situation, thus threatening the health and safety of human beings. Under the circumstances, a series of policy measures are continuously taken in recent years by the nation, such as the action plan for preventing and treating water pollution, and the water environment remediation is vigorously carried out. The key to water environment treatment and protection lies in the wastewater treatment in the industrial field, and the key to industrial wastewater treatment lies in: 1) source control, starting water saving and emission reduction from optimizing industrial process and improving production technology level; 2) the research and development of waste water purification and cyclic utilization or standard discharge technology are continuously carried out.
Chemical Oxygen Demand (COD) cr ) The method is one of main indexes for controlling the total amount of wastewater discharged in China, and the traditional processes of physical, chemical and chemical treatment, oxidation and the like have low removal rate of organic matters difficult to degrade in industrial wastewater, and usually have removal rate of only 20-30%, so that the method for improving the removal rate of the organic matters difficult to degrade in the industrial wastewater becomes a difficult problem to be solved urgently.
Ozone is an environment-friendly oxidant because of strong oxidizing property and the reaction product of the ozone is oxygen which is diffused into air, so that secondary pollution is avoided. Ozone is widely applied in the field of sewage treatment, in particular to the treatment of high-stability and difficult-to-degrade organic pollutants in wastewater.
The ozone reacts with the contaminants in two ways, direct and indirect. The direct reaction is that ozone directly oxidizes pollutants, the action mechanism of the direct reaction is mainly based on the strong oxidizing property of ozone, the direct reaction belongs to selective reaction, the reaction is slow, and the rate constant is very low; the indirect reaction isOzone generates a large amount of hydroxyl free radicals (. OH) with stronger activity and oxidation performance in the treatment process, thereby having higher pollutant degradation and removal capacity and faster reaction rate and belonging to non-selective reaction. From the characteristics of two modes of reaction of ozone and organic matters in water, the indirect reaction of the ozone has more important significance, and is expected to become a high-efficiency COD removal method when the wastewater which is difficult to oxidize and degrade is treated cr The technique of (1).
Although ozone oxidation technology has been developed for many years, it has been used for a few years or has a poor effect in an actual industrial wastewater treatment system, and its main problems and causes are summarized as follows:
(1) at present, the common ozone preparation technology takes air or pure oxygen as a raw material, adopts a corona discharge method, and has high energy consumption, low yield and large ozone quality fluctuation, thereby leading the cost of the ozone oxidation technology to be high.
(2) Ozone is lower in aquatic solubility, and the mass transfer effect of traditional contact device or mode (aeration) is unsatisfactory, causes the absorption efficiency of gas-liquid contact low, has restricted the ozone concentration of participating in the reaction, and then has restricted pollutant treatment effect, and the cost disadvantage of ozone oxidation technique has been aggravated to ozone utilization ratio on the low side.
In view of this, the present invention is especially provided.
SUMMERY OF THE UTILITY MODEL
The utility model has the first purpose of providing a micro-interface enhanced ultra-efficient wastewater ozone treatment device which has simple overall structure, and improves the oxidation treatment effect of wastewater by arranging two treatment areas to treat wastewater; through set up the gas outlet at second treatment zone lateral wall, the unreacted ozone of second treatment zone gets into and continues to participate in the processing to waste water in the first treatment zone, has improved the utilization ratio of ozone, has reduced the waste of ozone, has practiced thrift the cost.
A second object of the utility model is to provide a super high-efficient waste water ozone treatment method is reinforceed to little interface, this method easy operation can effectively improve the purification treatment effect to waste water, and can reach more than 95% to the utilization ratio of ozone to the waste water treatment cost has been practiced thrift.
In order to realize the above purpose of the utility model, the following technical scheme is adopted:
the utility model provides a super high-efficient waste water ozone treatment device is reinforceed to little interface, include: an ozone generator and a reaction tower; the middle part of the reaction tower is provided with a partition plate; a first treatment area is arranged above the partition plate, and a second treatment area is arranged below the partition plate;
the side wall of the first treatment area is connected with a waste water pipeline; a first micro interface unit is arranged in the first processing area, a second micro interface unit is arranged in the second processing area,
an inlet of the ozone generator is connected with an oxygen pipeline, and an outlet of the ozone generator is connected with the first micro-interface unit and the second micro-interface unit respectively;
an overflow pipe is arranged in the first treatment area, penetrates through the partition plate and is communicated with the first treatment area and the second treatment area; the wastewater treated in the first treatment area enters the second treatment area through the overflow pipe;
the upper part of the second treatment area is provided with a gas outlet which is connected with the first micro interface unit so as to convey ozone at the top of the second treatment area into the first treatment area; the gas outlet is above the liquid level in the second treatment zone.
Among the prior art, ozone gets into the reaction tower after, because its own is the gaseous state and lower in aqueous solubility, the absorption efficiency of gas-liquid contact is low, and generally only about 40% ozone has participated in the oxidation treatment process of waste water, and a large amount of ozone are direct to be discharged from the reaction tower top, and the ozone low-usage has seriously influenced the treatment effect of waste water, and simultaneously, ozone utilization ratio on the low side has aggravated the cost disadvantage of ozone oxidation technique.
In order to solve the technical problem, the utility model provides a micro-interface enhanced ultra-high efficiency wastewater ozone treatment device, which can perform two times of ozone treatment on wastewater by arranging a first treatment area and a second treatment area, thereby effectively improving the treatment effect on the wastewater; the overflow pipe is arranged to communicate the first treatment area with the second treatment area, so that the liquid levels in the two treatment areas can be kept balanced, and meanwhile, the wastewater treated by the first treatment area enters the second treatment area through the overflow pipe; through set up first little interface unit and second little interface unit in first treatment area and second treatment area respectively, utilize little interface unit to break the ozone dispersion into micron level microbubble, improved the solubility of ozone in waste water, improved the gas-liquid area of contact between ozone and waste water simultaneously to improve the utilization ratio of ozone, reduced the waste water treatment cost.
Preferably, the first micro-interface unit comprises a first micro-interface generator and a second micro-interface generator, the first micro-interface generator is positioned above the second micro-interface generator, the first micro-interface generator and the second micro-interface generator are positioned on the same straight line, a first flow guide pipe is arranged between the first micro-interface generator and the second micro-interface generator, and an outlet of the first micro-interface generator is connected with the second micro-interface generator through the first flow guide pipe; the gas outlet is connected with the first micro-interface generator, and the ozone generator is connected with the second micro-interface generator. Through setting up first little interfacial generator and second little interfacial generator to utilize first honeycomb duct to connect it, can carry out twice dispersion breakage with ozone, improve the broken effect of dispersion to ozone, thereby improve the gas-liquid area of contact of ozone and waste water.
Preferably, the second micro-interface unit comprises a third micro-interface generator, a fourth micro-interface generator and a second flow guide pipe, the third micro-interface generator is positioned above the fourth micro-interface generator, the third micro-interface generator and the fourth micro-interface generator are positioned on the same straight line, and an outlet of the third micro-interface generator is connected with the fourth micro-interface generator through the second flow guide pipe; the third micro-interface generator is connected with the ozone generator. Through setting up third micro-interface generator and fourth micro-interface generator to utilize the second honeycomb duct to connect it, can carry out twice dispersion breakage with ozone, improve the broken effect of dispersion to ozone, thereby improve the gas-liquid area of contact of ozone and waste water.
Preferably, the top inlet of the overflow pipe is higher than the first micro interface unit and is positioned below the liquid level in the first treatment area, and the bottom outlet is lower than the second micro interface unit. The waste water before treatment contains more organic matters, and the density of the waste water is higher than that of the waste water after treatment, so the waste water after treatment can float to the top, and the waste water at the top overflows into the second treatment area through the inlet of the overflow pipe.
Preferably, the wastewater line is disposed in a vertical direction between the first micro-interface generator and the second micro-interface generator.
Preferably, a first circulation pipeline is arranged on the side of the first treatment area, an inlet of the first circulation pipeline is connected with the bottom of the first treatment area, and an outlet of the first circulation pipeline is connected with the first micro-interface generator.
Preferably, a second circulating pipeline is arranged on one side of the second treatment area; the inlet of the second circulating pipeline is connected with the bottom of the second treatment area; the outlet is connected to the third micro-interface generator.
Preferably, the amount of ozone entering the second reaction zone from the ozone generator is greater than the amount of ozone entering the first reaction zone from the ozone generator. Further, the ratio of the amount of ozone entering the second reaction zone from the ozone generator to the amount of ozone entering the first reaction zone from the ozone generator is 1: 9.
Preferably, a liquid outlet is formed in the side wall of the second treatment area, and the liquid outlet is located between the second micro interface unit and the liquid level in the second treatment area along the vertical direction.
Preferably, the top of the first treatment area is connected with a tail gas pipeline. Oxygen generated after the ozone reacts with the wastewater and carbon dioxide generated in the oxidation process are discharged from a tail gas pipeline.
In the utility model, wastewater enters a first treatment area through a wastewater pipeline, and meanwhile, ozone conveyed by an ozone generator enters a first micro interface unit, is crushed into micro bubbles at a micron level through a micro interface, is mixed with the wastewater to form a gas-liquid emulsion, and the ozone micro bubbles are contacted with the wastewater to oxidize pollutants in the wastewater; the wastewater treated by the first treatment area flows into the second treatment area through an overflow pipe;
meanwhile, after the ozone conveyed by the ozone generator is dispersed and crushed into micro bubbles in the second micro interface unit, the wastewater is continuously treated for the second time, the treated wastewater flows out through the liquid outlet, and the ozone which does not participate in the reaction in the second treatment area enters the first treatment area through the gas outlet to participate in the treatment of the wastewater. Therefore, the treatment effect on the wastewater is improved, the utilization efficiency of the ozone is improved, and the utilization efficiency of the ozone in the reaction system can be improved to 95%.
In fact, the first treatment zone is mainly used for pretreating the wastewater, and the ozone introduced into the first treatment zone is far less than the ozone introduced into the second reaction zone, so that the wastewater in the first treatment zone is kept excessive, the utilization efficiency of the ozone can be improved, and the wastewater is subjected to primary oxidation treatment; the second treatment area is a main reaction area, the introduced ozone is excessive, and is dispersed into micro-bubbles at the micron level under the dispersion and crushing of the second micro-interface unit, so that the gas-liquid contact area of the second treatment area and the micro-bubbles is improved, the treatment effect on the wastewater is ensured, the ozone which does not participate in the reaction enters the first treatment area from a gas outlet at the upper part of the second treatment area, participates in the pretreatment on the wastewater, and the utilization efficiency of the ozone is improved.
In the utility model, on one hand, the first micro interface unit and the second micro interface unit disperse and crush the ozone into micro bubbles at the micron level, thereby improving the retention time of the ozone in the wastewater and slowing down the rising speed of the ozone, so as to prolong the reaction interval of the ozone and the wastewater, improve the ozone utilization rate and the wastewater treatment effect and reduce the ozone waste; on the other hand, when the generated ozone microbubbles are broken in the wastewater, the energy generated by the breaking can decompose water molecules in the wastewater into active oxygen and active hydroxyl, and the ozone itself is decomposed into oxygen and active oxygen in the wastewater, which have an oxidizing effect on pollutants in the wastewater. It is thus clear that the utility model discloses not only through adopting the micro-interface unit to improve the gas-liquid area of contact between ozone and waste water, still utilize the broken ability when the ozone microbubble that produces broken to improve the oxidation treatment effect to waste water, just through this kind of mode, improved the utility model discloses treatment effeciency to waste water. Wherein the chemical reaction formula of the ozone and the water is as follows:
O 3 →O 2 +O·
H 2 O→HO·+O·
it will be appreciated by those skilled in the art that the micro-interface generator used in the present invention is embodied in the prior patents of the present invention, such as the patents of application numbers CN201610641119.6, CN201610641251.7, CN201710766435.0, CN106187660, CN105903425A, CN109437390A, CN205833127U and CN 207581700U. The detailed structure and operation principle of the micro bubble generator (i.e. micro interface generator) is described in detail in the prior patent CN201610641119.6, which describes that "the micro bubble generator comprises a body and a secondary crushing member, wherein the body is provided with a cavity, the body is provided with an inlet communicated with the cavity, the opposite first end and second end of the cavity are both open, and the cross-sectional area of the cavity decreases from the middle of the cavity to the first end and second end of the cavity; the secondary crushing member is disposed at least one of the first end and the second end of the cavity, a portion of the secondary crushing member is disposed within the cavity, and an annular passage is formed between the secondary crushing member and the through holes open at both ends of the cavity. The micron bubble generator also comprises an air inlet pipe and a liquid inlet pipe. "the specific working principle of the structure disclosed in the application document is as follows: liquid enters the micro-bubble generator tangentially through the liquid inlet pipe, and gas is rotated at a super high speed and cut to break gas bubbles into micro-bubbles at a micron level, so that the mass transfer area between a liquid phase and a gas phase is increased, and the micro-bubble generator in the patent belongs to a pneumatic micro-interface generator.
In addition, the first patent 201610641251.7 describes that the primary bubble breaker has a circulation liquid inlet, a circulation gas inlet and a gas-liquid mixture outlet, and the secondary bubble breaker communicates the feed inlet with the gas-liquid mixture outlet, which indicates that the bubble breakers all need to be mixed with gas and liquid, and in addition, as can be seen from the following drawings, the primary bubble breaker mainly uses the circulation liquid as power, so that the primary bubble breaker belongs to a hydraulic micro-interface generator, and the secondary bubble breaker simultaneously introduces the gas-liquid mixture into an elliptical rotating ball for rotation, thereby realizing bubble breaking in the rotating process, so that the secondary bubble breaker actually belongs to a gas-liquid linkage micro-interface generator. In fact, no matter be the hydraulic formula micro-interface generator, still gas-liquid linkage micro-interface generator all belongs to a specific form of micro-interface generator, however the utility model discloses the micro-interface generator who adopts is not limited to above-mentioned several kinds of forms, and the specific structure of the bubble breaker who records in the patent in advance is only one of them form that the micro-interface generator can adopt.
Furthermore, the prior patent 201710766435.0 states that the principle of the bubble breaker is that high-speed jet flows are used to achieve mutual collision of gases, and also states that the bubble breaker can be used in a micro-interface strengthening reactor to verify the correlation between the bubble breaker and the micro-interface generator; moreover, in the prior patent CN106187660, there is a related description on the specific structure of the bubble breaker, see paragraphs [0031] to [0041] in the specification, and the accompanying drawings, which illustrate the specific working principle of the bubble breaker S-2 in detail, the top of the bubble breaker is a liquid phase inlet, and the side of the bubble breaker is a gas phase inlet, and the liquid phase coming from the top provides the entrainment power, so as to achieve the effect of breaking into ultra-fine bubbles, and in the accompanying drawings, the bubble breaker is also seen to be of a tapered structure, and the diameter of the upper part is larger than that of the lower part, and also for better providing the entrainment power for the liquid phase.
Because the initial stage of earlier patent application, little interfacial surface generator just has just developed, so the early name is micron bubble generator (CN201610641119.6), bubble breaker (201710766435.0) etc. along with continuous technological improvement, later stage renames as little interfacial surface generator, now the utility model provides a little interfacial surface generator is equivalent to micron bubble generator, bubble breaker etc. before, and only the name is different. To sum up, the utility model discloses a little interface generator belongs to prior art.
The utility model also provides a method for treating wastewater by ozone with ultra-high efficiency through micro-interface strengthening, which applies the treatment device to treat wastewater.
Preferably, the processing method comprises:
after oxygen is converted into ozone, the oxygen is broken into micro bubbles at the micron level through a micro interface, and the ozone micro bubbles are contacted with the wastewater to purify the wastewater.
The treatment method of the utility model is simple in operation, can effectively improve the purification treatment effect to the waste water, and can reach more than 95% to the utilization ratio of ozone to save the waste water treatment cost.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the micro-interface enhanced ultra-efficient wastewater ozone treatment device has simple overall structure, and improves the oxidation treatment effect of the wastewater by arranging two treatment areas to treat the wastewater; through set up the gas outlet at second treatment zone lateral wall, the unreacted ozone of second treatment zone gets into and continues to participate in the processing to waste water in the first treatment zone, has improved the utilization ratio of ozone, has reduced the waste of ozone, has practiced thrift the cost.
Drawings
Various additional advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
FIG. 1 is a schematic structural diagram of a micro-interface enhanced ultra-high efficiency wastewater ozone treatment device provided in embodiment 1 of the present invention;
fig. 2 is a schematic structural view of a micro-interface enhanced ultra-high efficiency wastewater ozone treatment device provided in comparative example 3 of the present invention.
Wherein:
10-a second treatment zone; 20-an overflow pipe;
30-a fourth micro-interface generator; 40-a second draft tube;
50-a third micro-interface generator; 60-a partition plate;
70-a second micro-interface generator; 80-a first draft tube;
90-a first micro-interface generator; 100-waste water line;
110-tail gas line; 120-a gas outlet;
130-a first circulation line; 140-a liquid outlet;
150-a second circulation line; 160-oxygen line;
170-an ozone generator; 180-first treatment zone.
Detailed Description
The technical solutions of the present invention will be described more clearly and completely below with reference to the accompanying drawings and detailed description, but those skilled in the art will understand that the following described embodiments are some, but not all, of the embodiments of the present invention, and are only used for illustrating the present invention, and should not be considered as limiting the scope of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In order to clarify the technical solution of the present invention, the following description is made in the form of specific embodiments.
Example 1
Referring to fig. 1, the present embodiment provides a micro-interface enhanced ultra-high efficiency wastewater ozone treatment apparatus, including: an ozone generator 170 and a reaction tower; the middle part of the reaction tower is provided with a partition plate 60; the first treating section 180 is provided above the partition plate 60, and the second treating section 10 is provided below. The side wall of the first treatment area 180 is connected with a waste water pipeline 100; a first micro interface unit is arranged in the first processing area 180, and a second micro interface unit is arranged in the second processing area 10; the outlet of the ozone generator 170 is connected with the first micro interface unit and the second micro interface unit respectively, the inlet is connected with the oxygen pipeline 160, when in reaction, oxygen enters the ozone generator 170 through the oxygen pipeline 160 to react to generate ozone, and the ozone is respectively input into the first micro interface unit and the second micro interface unit to be dispersed and crushed into micro bubbles at micron level and then mixed with wastewater to treat the wastewater. To ensure the treatment effect, the amount of ozone entering the second reaction zone from the ozone generator 170 is greater than the amount of ozone entering the first reaction zone from the ozone generator 170. In this embodiment, the ratio of the amount of ozone entering the second reaction zone from the ozone generator 170 to the amount of ozone entering the first reaction zone from the ozone generator 170 is 1: 9.
The first micro-interface unit comprises a first micro-interface generator 90 and a second micro-interface generator 70, the first micro-interface generator 90 is positioned above the second micro-interface generator 70, the first micro-interface generator 90 and the second micro-interface generator 70 are positioned on the same straight line, a first flow guide pipe 80 is arranged between the first micro-interface generator 90 and the second micro-interface generator 70, and the outlet of the first micro-interface generator 90 is connected with the second micro-interface generator 70 through the first flow guide pipe 80; the gas outlet 120 is connected to a first micro-interface generator 90 and the ozone generator 170 is connected to a second micro-interface generator 70. The waste pipe 100 is disposed between the first micro-interface generator 90 and the second micro-interface generator 70 in a vertical direction. Through setting up first micro interface generator 90 and second micro interface generator 70 to utilize first honeycomb duct 80 to connect it, can carry out twice dispersion breakage with ozone, improve the dispersion crushing effect to ozone, thereby improve the gas-liquid area of contact of ozone and waste water.
The top of the first treatment zone 180 is connected to a tail gas line 110. Oxygen generated after the ozone reacts with the wastewater and carbon dioxide generated during the oxidation process are discharged from the tail gas line 110.
The first circulation pipeline 130 is arranged at the side of the first treatment area 180, the inlet of the first circulation pipeline 130 is connected with the bottom of the first treatment area 180, and the outlet is connected with the first micro-interface generator 90.
In this embodiment, an overflow pipe 20 is disposed in the first treatment zone 180, and the overflow pipe 20 penetrates through the partition plate 60 to communicate the first treatment zone 180 with the second treatment zone 10; the wastewater treated in the first treatment area 180 enters the second treatment area 10 through the overflow pipe 20; specifically, the top inlet of the overflow tube 20 is above the first set of micro-interface units and below the liquid level in the first treatment zone 180, and the bottom outlet is below the second set of micro-interface units. The wastewater before treatment contains more organic matters, has higher density than the wastewater after treatment, floats to the top, and overflows to the second treatment area 10 through the inlet of the overflow pipe 20.
With continued reference to fig. 1, the second micro-interface unit includes a third micro-interface generator 50, a fourth micro-interface generator 30 and a second flow guide tube 40, the third micro-interface generator 50 is located above the fourth micro-interface generator 30, the third micro-interface generator 50 and the fourth micro-interface generator 30 are located on the same straight line, and the outlet of the third micro-interface generator 50 is connected to the fourth micro-interface generator 30 through the second flow guide tube 40; the third micro-interface generator 50 is connected to an ozone generator 170. Through setting up third micro interface generator 50 and fourth micro interface generator 30 to utilize second honeycomb duct 40 to connect it, can carry out twice dispersion breakage with ozone, improve the dispersion crushing effect to ozone, thereby improve the gas-liquid area of contact of ozone and waste water.
A second circulation pipeline 150 is arranged at one side of the second treatment area 10; the inlet of the second circulation pipeline 150 is connected with the bottom of the second treatment area 10; the outlet is connected to a third micro-interface generator 50.
In order to improve the utilization rate of ozone, a gas outlet 120 is arranged at the upper part of the second treatment area 10, and the gas outlet 120 is connected with the first micro interface unit so as to convey the ozone at the top of the second treatment area 10 into the first treatment area 180; the gas outlet 120 is above the liquid level in the second treatment zone 10.
The side wall of the second treatment zone 10 is provided with a liquid outlet 140, and the liquid outlet 140 is located between the second micro interface unit and the liquid level in the second treatment zone 10 along the vertical direction. The water treated in the second treatment zone 10 is withdrawn from the liquid outlet 140.
Comparative example 1
This example is different from example 1 only in that no partition plate is provided.
Comparative example 2
This example differs from example 1 only in that the gas outlet of the second treatment zone is not connected to the first treatment zone and the top gas of the second treatment zone is withdrawn directly.
Comparative example 3
The difference between this example and example 1 is that in this example, the first micro-interface generator and the second micro-interface generator are not collinear, and the third micro-interface generator and the fourth micro-interface generator are not collinear, as shown in fig. 2.
Experimental example 1
Taking wastewater from a chemical plant as an example, the wastewater was treated by the treatment apparatuses of example 1, comparative example 1, and comparative example 2.
Wherein the water volume of the wastewater is 100m 3 And h, COD is 2400mg/L, the ozone adding concentration is 100mg/L, the COD of the produced water at the liquid outlet is tested, and the test results are shown in the following table.
TABLE 1 test results
| COD(mg/L) | Removal Rate (%) | |
| Example 1 | 40.8 | 98.3 |
| Comparative example 1 | 331.2 | 86.2 |
| Comparative example 2 | 156 | 93.5 |
| Comparative example 3 | 105.6 | 95.6 |
As can be seen from Table 1, the treatment apparatus of this example can effectively purify wastewater, and the removal rate can reach 98.3%. The reason why the removal rate of the comparative example 1 only reaches 86.2% is that the comparative example 1 has only one treatment area, and part of ozone entering the treatment area is discharged through a tail gas pipeline at the top without reacting with wastewater, so that the ozone utilization rate is low; in the embodiment 1, two treatment areas are arranged, only a small amount of ozone is introduced into the first treatment area for pretreatment, the upper part of the second treatment area is provided with a gas outlet, and the ozone which does not participate in the reaction in the second treatment area can be discharged into the first treatment area through the gas outlet for pretreatment of wastewater, so that the efficient utilization of the ozone is realized, and the treatment effect of the wastewater is improved; the removal rate of comparative example 2 is much lower than that of example 1, because the unreacted ozone in the second treatment zone in comparative example 2 is directly extracted from the gas outlet, the utilization rate of ozone is affected, and the treatment effect on the wastewater is poor. Although the removal rate of comparative example 3 is superior to that of comparative examples 1 and 2, the removal rate is lower than that of example 1 because the two micro-interface generators of the micro-interface unit in comparative example 3 are not aligned, and therefore, the micro-bubbles may be affected by the transportation path when transported in the draft tube, the impact force is weakened, the crushing effect in the secondary crushing is poor, and the gas-liquid contact area is inferior to that of example 1, thereby affecting the removal rate.
In a word, compared with the prior art, the utility model discloses a super high-efficient waste water ozone treatment device is reinforceed to little interface overall structure is simple, can effectively improve the purification treatment effect to waste water, and can realize the high-efficient utilization to ozone to the waste water treatment cost has been reduced.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.
Claims (8)
1. A micro-interface enhanced ultra-efficient wastewater ozone treatment device is characterized by comprising: an ozone generator and a reaction tower; the middle part of the reaction tower is provided with a partition plate; a first treatment area is arranged above the partition plate, and a second treatment area is arranged below the partition plate;
the side wall of the first treatment area is connected with a waste water pipeline; a first micro interface unit is arranged in the first processing area, and a second micro interface unit is arranged in the second processing area;
an inlet of the ozone generator is connected with an oxygen pipeline, and an outlet of the ozone generator is connected with the first micro-interface unit and the second micro-interface unit respectively;
an overflow pipe is arranged in the first treatment area, penetrates through the partition plate and is communicated with the first treatment area and the second treatment area; the wastewater treated in the first treatment area enters the second treatment area through the overflow pipe;
the upper part of the second treatment area is provided with a gas outlet which is connected with the first micro interface unit so as to convey ozone at the top of the second treatment area into the first treatment area; the gas outlet is above the liquid level in the second treatment zone.
2. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 1, wherein the first micro-interface unit comprises a first micro-interface generator and a second micro-interface generator, the first micro-interface generator is positioned above the second micro-interface generator, the first micro-interface generator and the second micro-interface generator are positioned on the same line, a first flow guide pipe is arranged between the first micro-interface generator and the second micro-interface generator, and an outlet of the first micro-interface generator is connected with the second micro-interface generator through the first flow guide pipe; the gas outlet is connected with the first micro-interface generator, and the ozone generator is connected with the second micro-interface generator.
3. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 1, wherein the second micro-interface unit comprises a third micro-interface generator, a fourth micro-interface generator and a second flow guide pipe, the third micro-interface generator is positioned above the fourth micro-interface generator, the third micro-interface generator and the fourth micro-interface generator are positioned on the same line, and the outlet of the third micro-interface generator is connected with the fourth micro-interface generator through the second flow guide pipe; the third micro-interface generator is connected with the ozone generator.
4. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 1, wherein the top inlet of the overflow pipe is higher than the first micro-interface unit and is positioned below the liquid level in the first treatment zone, and the bottom outlet is lower than the second micro-interface unit.
5. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment unit according to claim 2, wherein the wastewater pipeline is disposed between the first micro-interface generator and the second micro-interface generator in a vertical direction.
6. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 2, characterized in that a first circulation pipeline is arranged at the side part of the first treatment zone, the inlet of the first circulation pipeline is connected with the bottom part of the first treatment zone, and the outlet of the first circulation pipeline is connected with the first micro-interface generator.
7. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 3, wherein a second circulation pipeline is arranged on one side of the second treatment area; the inlet of the second circulating pipeline is connected with the bottom of the second treatment area; the outlet is connected to the third micro-interface generator.
8. The micro-interface enhanced ultra-high efficiency wastewater ozone treatment device according to claim 3, wherein the side wall of the second treatment zone is provided with a liquid outlet, and the liquid outlet is vertically positioned between the second micro-interface unit and the liquid level in the second treatment zone.
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