Multi-stage turbulent mixing ozone tubular reaction device
By integrating H2O2 dosing and ozone dosing devices with a mixer through a multi-stage turbulent mixing ozone tubular reactor, the fluid mixing is optimized, solving the problem of poor mixing effect between ozone and wastewater, and achieving efficient wastewater treatment and energy consumption reduction.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- MCWONG ENVIRONMENTAL TECH CORP LTD
- Filing Date
- 2025-04-23
- Publication Date
- 2026-04-21
AI Technical Summary
Existing technologies have poor effects in treating wastewater by mixing ozone and wastewater. Direct aeration is energy-intensive and costly, and existing devices do not address the specific arrangement of the mixer and ozone addition.
A multi-stage turbulent mixing ozone tubular reactor is adopted. By integrating an H2O2 dosing device, an ozone dosing device, and a turbulent mixer on the reactor tube, and designing a multi-layer reactor tube with a reasonable configuration of the number and position of the turbulent mixer blades, multi-point segmented dosing of ozone and wastewater and enhanced fluid turbulence are achieved.
It significantly improves ozone utilization and reaction efficiency, reduces energy consumption of the device, and achieves efficient treatment of recalcitrant wastewater.
Smart Images
Figure CN224147838U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of wastewater treatment technology, and in particular to a multi-stage turbulent ozone tubular reaction device. Background Technology
[0002] Industrial wastewater upgrading and deep purification processes typically use secondary biological treatment effluent as the core treatment target. The BOD / COD (biochemical oxygen demand / chemical oxygen demand) ratio (B / C ratio) is already quite low, even below 0.1, and is referred to as recalcitrant wastewater.
[0003] Therefore, to further reduce COD (Chemical Oxygen Demand) levels, more efficient oxidation technologies must be employed. Advanced oxidation technologies (AEOs) are key technologies that meet this need. They remove or degrade pollutants in water, solids, and air by generating highly oxidizing hydroxyl radicals, breaking down large, recalcitrant organic pollutants into lower-toxicity or non-toxic smaller molecules or water. Depending on the mechanism of hydroxyl radical generation and reaction conditions, AEOs can be categorized into photochemical oxidation, electrochemical oxidation, O3 / H2O2 oxidation, Fenton oxidation, and catalytic wet oxidation, among others.
[0004] Among them, compared with other advanced oxidation technologies, O3 / H2O2 advanced oxidation technology has become a hot topic in the field of industrial wastewater upgrading and deep treatment technology in recent years due to its significant advantages of no secondary pollution, mild reaction conditions and clean and readily available oxidants.
[0005] The main methods for introducing ozone into wastewater include aeration, jet injection, and membrane dosing. Among these methods, except for aeration, the other two have the disadvantages of high energy consumption and high cost. Although direct aeration has advantages in both energy consumption and cost, its effectiveness is not ideal.
[0006] Patent CN115745140A describes an ozone dosing device including an isobaric gas chamber for introducing ozone, multiple gas distribution pipes connected to the isobaric gas chamber, and gas distribution pipes extending into the radial cross-section of a reaction tube. The gas distribution pipes have gas distribution holes to allow ozone to mix into the liquid flow within the reaction tube. This device offers high ozone utilization and a lower inlet pump head. However, it does not describe the specific arrangement of the mixer and ozone dosing. Utility Model Content
[0007] The purpose of this invention is to provide a multi-stage mixed ozone tubular reactor to improve the mixing effect of wastewater and ozone in the existing technology, and reduce the energy consumption and cost of the device.
[0008] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0009] This invention provides a multi-stage turbulent ozone tubular reaction device, comprising:
[0010] The reaction tube has multiple layers, and the layers are interconnected; each layer of the reaction tube includes a front row reaction tube and a rear row reaction tube that are connected to each other.
[0011] H2O2 dosing device, which is located at the front end of the reaction tube, is used to add H2O2 to synergize with ozone oxidation;
[0012] An ozone dosing device is installed on the front exhaust pipe and is used to add ozone in stages to maintain the reaction concentration;
[0013] A mixer, disposed on the reaction tube, is used to enhance fluid turbulence.
[0014] Furthermore, the layers are connected by interlayer U-shaped tubes to ensure a smooth transition of fluid between layers.
[0015] Furthermore, the front reaction tube and the rear reaction tube are connected by an inter-row U-shaped tube to form a continuous flow path.
[0016] Furthermore, the H2O2 dosing device is disposed on the rear reaction tube of the first layer of the reaction tube, and a four-leaf mixer is disposed downstream of the H2O2 dosing device.
[0017] Furthermore, the ozone dosing device and the four-bladed mixer are sequentially arranged on the front reaction pipe of the second-layer reaction pipe along the sewage flow direction; the two-bladed mixer and the three-bladed mixer are sequentially arranged on the rear reaction pipe of the second-layer reaction pipe along the sewage flow direction.
[0018] Furthermore, a single-leaf mixer, the ozone dosing device, and a three-leaf mixer are sequentially arranged on the front reaction pipe of the three-layer reaction pipe along the sewage flow direction; a two-leaf mixer and a three-leaf mixer are sequentially arranged on the rear reaction pipe of the three-layer reaction pipe along the sewage flow direction.
[0019] Furthermore, a single-leaf mixer, an ozone dosing device, and a four-leaf mixer are sequentially arranged on the front reaction pipe of the four-layer reaction pipe along the sewage flow direction; a single-leaf mixer and a three-leaf mixer are sequentially arranged on the rear reaction pipe of the four-layer reaction pipe along the sewage flow direction.
[0020] Furthermore, a single-leaf mixer and a three-leaf mixer are sequentially installed on the front and rear reaction pipes of the five-layer reaction pipe along the sewage flow direction.
[0021] Furthermore, a single-leaf mixer, an ozone dosing device, and a three-leaf mixer are sequentially arranged on the front reaction pipe of the six-layer reaction pipe along the sewage flow direction; a single-leaf mixer and a three-leaf mixer are sequentially arranged on the rear reaction pipe of the six-layer reaction pipe along the sewage flow direction.
[0022] Furthermore, a single-leaf mixer and a three-leaf mixer are sequentially arranged on the front reaction pipe of the seven-layer reaction pipe along the sewage flow direction; a single-leaf mixer is arranged on the rear reaction pipe of the seven-layer reaction pipe along the sewage flow direction.
[0023] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:
[0024] This invention relates to a multi-stage turbulent ozone tubular reaction device that integrates an H2O2 dosing device, an ozone dosing device, and a turbulent mixer onto a reaction tube. Wastewater treatment is carried out in a multi-layer reaction tube, which prolongs the contact time between ozone and wastewater and significantly improves ozone utilization and reaction efficiency.
[0025] Furthermore, by rationally configuring the number and placement of the mixer blades, the mixing effect can be enhanced, thereby reducing the pressure drop generated by the entire reactor and thus reducing the energy consumption of the water pump. As a result, the motor specifications can be reduced during the design phase. Attached Figure Description
[0026] The following sections will describe some specific embodiments of the present invention in a detailed manner by way of example and not limitation, with reference to the accompanying drawings. The same reference numerals in the drawings denote the same or similar parts or components. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:
[0027] Figure 1 This is a front view of a multi-stage turbulent ozone tubular reaction device provided by this utility model;
[0028] Figure 2 This is a rear view of a multi-stage turbulent ozone tubular reaction device provided by this utility model;
[0029] Figure 3 This is a left view of a multi-stage turbulent ozone tubular reaction device provided by this utility model;
[0030] Figure 4 yes Figure 1 AA section view.
[0031] The reference numerals in the attached figures are explained as follows:
[0032] 1. Reaction tube; 101. Front row reaction tube; 102. Rear row reaction tube; 104. Flow gap; 2. H2O2 dosing device; 3. Ozone dosing device; 31. Isobaric gas chamber; 32. Gas distribution pipe; 321. Gas distribution hole; 4. Mixer; 401. Single-leaf mixer; 402. Two-leaf mixer; 403. Three-leaf mixer; 404. Four-leaf mixer; 5. Interlayer U-tube; 6. Row U-tube. Detailed Implementation
[0033] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0034] The present invention provides a multi-stage mixed ozone tubular reaction device, comprising a reaction tube 1, an H2O2 dosing device 2, an ozone dosing device 3, and a mixer 4.
[0035] Specifically, see Figures 1 to 3 The arrows in the diagram indicate the direction of wastewater flow. The reaction pipe 1 has multiple layers, which are interconnected. Each layer of reaction pipe 1 is connected by an interlayer U-shaped pipe 5, ensuring a smooth transition of fluid between layers. Each layer of reaction pipe 1 includes a connected front-row reaction pipe 101 and a rear-row reaction pipe 102, which are connected by an inter-row U-shaped pipe 6, forming a continuous flow path for the fluid within the pipe.
[0036] H2O2 dosing device 2, located at the front end of reaction tube 1, is used to add H2O2 into reaction tube 1, working in conjunction with ozone. Ozone dosing device 3, located on the aforementioned front-row reaction tube 101, is used to add ozone into reaction tube 1 in stages to maintain the reaction concentration. A mixer 4, located on reaction tube 1, is used to enhance fluid turbulence. In this embodiment, various types of mixers 4 are used, including a single-blade mixer 401, a two-blade mixer 402, a three-blade mixer 403, and a four-blade mixer 404. By rationally arranging the mixers 4 with different numbers of blades in different positions and combining them at different levels, the fluid mixing effect is ensured.
[0037] In this embodiment, the H2O2 dosing device 2 is disposed on the reaction tube 1 of the first layer, and more specifically, on the downstream reaction tube 102 of the reaction tube 1 of the first layer. This arrangement facilitates a good synergistic effect between H2O2 and the subsequently added ozone. Furthermore, a four-bladed mixer 404 is disposed downstream of the H2O2 dosing device 2. This combined design ensures that H2O2 is rapidly and uniformly dispersed throughout the entire reaction system.
[0038] An ozone dosing device 3 and a four-bladed mixer 404 are sequentially installed on the front reaction pipe 101 of the second-layer reaction pipe 1 along the sewage flow direction; a two-bladed mixer 402 and a three-bladed mixer 403 are sequentially installed on the rear reaction pipe 102 of the second-layer reaction pipe 1 along the sewage flow direction.
[0039] The front reaction pipe 101 of the three-layer reaction pipe 1 is equipped with a single-leaf mixer 401, an ozone dosing device 3 and a three-leaf mixer 403 in sequence along the sewage flow direction; the rear reaction pipe 102 of the three-layer reaction pipe 1 is equipped with a two-leaf mixer 402 and a three-leaf mixer 403 in sequence along the sewage flow direction.
[0040] The front reaction pipe 101 of the four-layer reaction pipe 1 is equipped with a single-leaf mixer 401, an ozone dosing device 3 and a four-leaf mixer 404 in sequence along the sewage flow direction; the rear reaction pipe 102 of the four-layer reaction pipe 1 is equipped with a single-leaf mixer 401 and a three-leaf mixer 403 in sequence along the sewage flow direction.
[0041] The front reaction pipe 101 and the rear reaction pipe 102 of the five-layer reaction pipe 1 are each equipped with a single-leaf mixer 401 and a three-leaf mixer 403 in sequence along the sewage flow direction.
[0042] The front reaction pipe 101 of the six-layer reaction pipe 1 is equipped with a single-leaf mixer 401, an ozone dosing device 3 and a three-leaf mixer 403 in sequence along the sewage flow direction; the rear reaction pipe 102 of the six-layer reaction pipe 1 is equipped with a single-leaf mixer 401 and a three-leaf mixer 403 in sequence along the sewage flow direction.
[0043] A single-leaf mixer 401 and a three-leaf mixer 403 are sequentially installed on the front reaction pipe 101 of the seven-layer reaction pipe 1 along the sewage flow direction; a single-leaf mixer 401 is installed on the rear reaction pipe 102 of the seven-layer reaction pipe 1 along the sewage flow direction.
[0044] The aforementioned stepped and diverse arrangement of the mixers 4 effectively promotes gas-liquid mass transfer and reaction efficiency. Of course, the arrangement of the mixers 4 is not limited to the above method; combinations and arrangements of mixers 4 with any number of blades should also be covered within the scope of this utility model.
[0045] Furthermore, the outflow swirl direction of the last single-leaf mixer 401 on each layer of reaction tube 1 is the same as the inflow swirl direction of the first single-leaf mixer 401 on the next layer of mixer 4, in order to reduce energy loss. Moreover, the continuous swirl direction avoids local dead zones or short-circuiting phenomena.
[0046] In this embodiment, a total of 4 ozone dosing devices 3 are arranged on the above-mentioned reaction tubes 1. A multi-point segmented dosing method is adopted. The dosing device is equipped with nozzles. The aeration volume of each layer can be the same or different. Thus, the ozone volume at each dosing point can be flexibly adjusted according to the reaction process to match the system resistance.
[0047] Additionally, see Figure 4 In this embodiment, the ozone dosing device 3 includes an isobaric gas chamber 31 for introducing ozone and multiple gas distribution pipes 32 connected to the isobaric gas chamber 31. The gas distribution pipes 32 extend into the radial section of the reaction tube 1. Wastewater flows in the reaction tube 1. The gas distribution pipes 32 have gas distribution holes 321 in the reaction tube 1 facing away from the liquid flow direction so that ozone can be mixed into the liquid flow in the reaction tube 1. The gas distribution holes 321 are distributed in a fan shape around the central axis of the gas distribution pipe 32 and are distributed in several rows along the length of the gas distribution pipe 32.
[0048] In summary, the multi-stage turbulent mixing ozone tubular reactor disclosed in this utility model achieves step-by-step optimization of the reaction process through its multi-stage reaction tube design; the diverse combinations and arrangements of the turbulent mixers 4, as well as the precise calculation of the spacing between all turbulent mixers 4, ensure optimal mixing effects; the segmented ozone dosing design improves ozone utilization efficiency; and the gas distribution system design in the ozone dosing device 3 optimizes bubble distribution characteristics. It is suitable for the advanced treatment of recalcitrant organic wastewater, achieving highly efficient degradation of pollutants through advanced ozone oxidation technology, and possesses outstanding advantages such as good treatment effect, stable operation, and low energy consumption.
[0049] The above embodiments are only for illustrating the technical concept and features of this utility model. Their purpose is to enable those skilled in the art to understand the content of this utility model and implement it accordingly. They should not be used to limit the protection scope of this utility model. All equivalent changes or modifications made in accordance with the spirit and essence of this utility model should be included within the protection scope of this utility model.
Claims
1. A multi-stage chaotic ozone tubular reactor characterized in that, include: The reaction tube (1) is provided with multiple layers, and the layers are interconnected; each layer of the reaction tube (1) includes a front row reaction tube (101) and a rear row reaction tube (102) that are connected to each other. H2O2 dosing device (2), the H2O2 dosing device (2) is set at the front end of the reaction tube (1) and is used to add H2O2 to synergistically oxidize ozone; Ozone dosing device (3), the ozone dosing device (3) is installed on the front reaction tube (101) and is used to add ozone in stages to maintain the reaction concentration; A mixer (4) is disposed on the reaction tube (1) to enhance fluid turbulence.
2. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The layers are connected by interlayer U-shaped tubes (5) to ensure a smooth transition of fluid between layers.
3. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The front reaction tube (101) and the rear reaction tube (102) are connected by an inter-row U-shaped tube (6) to form a continuous flow path.
4. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The H2O2 dosing device (2) is installed on the rear reaction tube (102) of the first layer of the reaction tube (1), and a four-leaf mixer (404) is installed downstream of the H2O2 dosing device (2).
5. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The ozone dosing device (3) and a four-leaf mixer (404) are sequentially arranged on the front reaction pipe (101) of the second-layer reaction pipe (1) along the sewage flow direction; the two-leaf mixer (402) and the three-leaf mixer (403) are sequentially arranged on the rear reaction pipe (102) of the second-layer reaction pipe (1) along the sewage flow direction.
6. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The front reaction pipe (101) of the three-layer reaction pipe (1) is provided with a single-leaf mixer (401), the ozone dosing device (3) and a three-leaf mixer (403) in sequence along the sewage flow direction; the rear reaction pipe (102) of the three-layer reaction pipe (1) is provided with a two-leaf mixer (402) and a three-leaf mixer (403) in sequence along the sewage flow direction.
7. A multi-stage turbulent ozone tube reactor according to claim 1, wherein The front reaction pipe (101) of the four-layer reaction pipe (1) is provided with a single-leaf mixer (401), the ozone dosing device (3) and a four-leaf mixer (404) in sequence along the sewage flow direction; the rear reaction pipe (102) of the four-layer reaction pipe (1) is provided with a single-leaf mixer (401) and a three-leaf mixer (403) in sequence along the sewage flow direction.
8. A multi-stage turbulent ozone tube reactor according to claim 1, wherein A single-leaf mixer (401) and a three-leaf mixer (403) are sequentially installed on the front reaction pipe (101) and the rear reaction pipe (102) of the five-layer reaction pipe (1) along the sewage flow direction.
9. The multi-stage turbulent ozone tubular reaction device according to claim 1, characterized in that, The front reaction pipe (101) of the six-layer reaction pipe (1) is provided with a single-leaf mixer (401), the ozone dosing device (3) and the three-leaf mixer (403) in sequence along the sewage flow direction; the rear reaction pipe (102) of the six-layer reaction pipe (1) is provided with a single-leaf mixer (401) and the three-leaf mixer (403) in sequence along the sewage flow direction.
10. A multi-stage turbulent ozone tubular reaction device according to claim 1, characterized in that, A single-leaf mixer (401) and a three-leaf mixer (403) are sequentially arranged on the front reaction pipe (101) of the seven-layer reaction pipe (1) along the sewage flow direction; a single-leaf mixer (401) is arranged on the rear reaction pipe (102) of the seven-layer reaction pipe (1) along the sewage flow direction.