Vacuum ultraviolet Fenton-like integrated organic wastewater purification device

Abstract

The utility model discloses a vacuum ultraviolet Fenton-like integrated organic wastewater purification device, which is characterized in that a water inlet pipe and a dosing port are arranged at the top of a traditional Fenton reaction zone of the organic wastewater purification device, the traditional Fenton reaction zone is provided with a multilayer spiral stirrer, and a photocatalytic reaction zone is provided with a disinfection catalysis component; the catalyst is used for disinfecting and catalyzing the organic wastewater; spiral guide plates are arranged on the inner side and the outer side of the disinfection catalysis assembly and form spiral water channels for circulation of organic wastewater, so that the disinfection catalysis path of the disinfection catalysis assembly is prolonged, and disinfection catalysis is more thorough; therefore, the Fenton reaction and the vacuum ultraviolet disinfection technology are combined, and the treatment efficiency is greatly improved by utilizing the synergistic advantage; meanwhile, through structural innovation, the organic wastewater purification device is simpler and more convenient to operate and maintain and has remarkable energy-saving and environment-friendly benefits, and manpower and material resources are saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of wastewater treatment, and particularly relates to a vacuum ultraviolet Fenton-type integrated organic wastewater purification device. Background Art

[0002] With the acceleration of industrialization, the discharge of organic wastewater is increasing. Long-term input into water bodies will form residues, with significant cumulative effects and continuous deterioration of water quality. This not only destroys the inherent ecosystem and functions of natural water bodies, but also further aggravates the contradiction of regional water resource shortage.

[0003] Organic wastewater also has the characteristics of high color, odor, strong acidity and alkalinity, and complex structure of organic pollutants, which makes it more difficult to treat. Although the traditional Fenton method has unparalleled advantages in treating organic wastewater that is difficult to biodegrade or difficult to be oxidized by general chemical oxidation, the cost of using Fenton reagent alone to treat wastewater is very high, and the traditional Fenton method still has shortcomings, such as: on the one hand, it produces a lot of sludge, and during the treatment process, Fe 2+ Oxidized to Fe 3+ , while Fe 3+ Fe 2+ The conversion process of Fe is very slow and is considered to be the rate-limiting step in the Fenton system. 2+ is constantly consumed, Fe 3+ Continuously accumulate, without adding Fe 2+ Under the condition of adding Fe 2+ Under the condition of 3+ It will continue to accumulate and then hydrolyze to form a large amount of iron sludge. This is the main reason why the Fenton process produces sludge. On the other hand, the utilization rate of hydrogen peroxide is low and the treatment cost is high. On the other hand, ferrous ions are easily lost, affecting the color of the effluent and requiring subsequent decolorization treatment. On the other hand, the pH range of use is narrow, and the pH value of the wastewater often needs to be adjusted, increasing the treatment cost.

[0004] At present, technologies such as ultraviolet oxidation have been gradually developed, but this technology also has some defects, such as large consumption of oxidants and catalysts, susceptibility to water quality, high operating costs, and secondary pollution. These disadvantages limit the actual application of this technology in reality and require further improvement. Utility Model Content

[0005] The utility model provides a vacuum ultraviolet Fenton-like integrated organic wastewater purification device, which has significant improvements in design, operating costs, and operation and maintenance, and provides a convenient, efficient, and energy-saving vacuum ultraviolet Fenton-like integrated organic wastewater purification device for environmentally friendly treatment of organic wastewater.

[0006] To solve the above problems, the technical solutions provided by the present invention are as follows:

[0007] The utility model provides a vacuum ultraviolet Fenton-type integrated organic wastewater purification device, comprising a purification cylinder (1), wherein the top of the purification cylinder (1) is provided with a drug injection port (11), a water inlet pipe (12) and a drug inlet port (13), the side of the purification cylinder (1) is provided with a water outlet pipe (14), and the bottom of the purification cylinder (1) is provided with a truncated cone-shaped mud discharge hopper (6) for receiving the sludge generated by the traditional Fenton reaction; the bottom of the mud discharge hopper (6) is provided with a sludge valve (61);

[0008] A cylindrical inner guide baffle (3) and a cylindrical outer guide baffle (31) are vertically arranged in the purification cylinder (1), and the inner guide baffle (3) and the outer guide baffle (31) divide the purification cylinder (1) into two inner and outer cavities, and the space of the outer cavity is smaller than the space of the inner cavity; the inner cavity of the purification cylinder (1) is a traditional Fenton reaction zone, and one end of the water inlet pipe (12) passes through the purification cylinder (1) and extends to the traditional Fenton reaction zone; the outer cavity of the purification cylinder (1) is a photocatalytic reaction zone, and one end of the water outlet pipe (14) passes through the purification cylinder (1) and spirally extends to the photocatalytic reaction zone;

[0009] The conventional Fenton reaction zone is provided with a stirring assembly, the stirring assembly comprising a multi-layer spiral stirrer (4), the multi-layer spiral stirrer (4) is arranged in a staggered manner from top to bottom, the spiral stirrer (4) is a multi-section spiral blade that crosses at a certain angle, so that the water flow is divided multiple times, and vortex reverse rotation and cross flow are generated at the same time, so as to achieve the purpose of mixing;

[0010] The photocatalytic reaction zone is provided with a disinfection catalytic component (2) for disinfecting and catalyzing organic wastewater; the disinfection catalytic component (2) comprises a vacuum ultraviolet lamp tube upper clamp (21), a lamp holder (22), a vacuum ultraviolet lamp tube (23) and a quartz glass tube (24); the vacuum ultraviolet lamp tube upper clamp (21) is arranged in a ring shape in the quartz glass tube (24); the vacuum ultraviolet lamp tube upper clamp (21) is installed with the lamp holder (22); and the vacuum ultraviolet lamp tube (23) is installed on the lamp holder (22);

[0011] The disinfection catalytic component (2) is provided with spiral guide plates (5) on both the inside and outside, and the spiral guide plates (5) form a spiral waterway for the organic wastewater to flow, thereby extending the disinfection catalytic path of the disinfection catalytic component (2) and making the disinfection catalysis more thorough.

[0012] According to an optional embodiment of the utility model, the spiral guide plate (5) comprises an inner spiral guide plate (51) and an outer spiral guide plate (52), wherein the inner spiral guide plate (51) is a spiral downward guide plate, and the outer spiral guide plate (52) is a spiral upward guide plate.

[0013] According to an optional embodiment of the utility model, three groups of brackets (15) are connected to the bottom of the purification cylinder (1).

[0014] Compared with the prior art, the embodiment of the utility model provides a vacuum ultraviolet Fenton-type integrated organic wastewater purification device, which has the following beneficial effects:

[0015] (1) The organic wastewater purification device introduces organic wastewater into the purification column through the water inlet pipe at the top. During the water flow, the oxidant and the iron catalyst are sequentially added. The spiral agitators staggered up and down are used to achieve hydraulic stirring without consuming electricity, so that the organic wastewater and the oxidant added from the dosing port are effectively mixed, thereby improving the energy efficiency ratio of the purification process.

[0016] (2) The organic wastewater purification device not only facilitates the installation and maintenance of the ultraviolet lamp tube through the upper clamp on the lamp tube and the quartz glass tube arranged around it, but also avoids direct contact between the ultraviolet lamp tube and water, effectively extending the service life of the ultraviolet lamp tube. At the same time, for organic wastewater of different water quality, targeted treatment can be carried out by increasing or reducing the number of vacuum ultraviolet lamp tubes installed. Reasonable setting of the number of ultraviolet lamp tubes can not only fully disinfect the organic wastewater, but also reduce losses and save electricity.

[0017] (3) The organic wastewater purification device not only extends the water flow path and increases the disinfection time through the design of inner and outer spiral guide plates, but also ensures that the water flow is always within the irradiation range of the ultraviolet lamp during the entire treatment process, thereby making the disinfection process more thorough.

[0018] (4) The traditional Fenton reaction zone of the organic wastewater purification device is accompanied by the generation of a large amount of iron sludge. The design of the sludge hopper and the baffle plate allows the sludge in the water to be well precipitated, avoiding the impact on subsequent treatment and the formation of scale on the quartz glass tube.

[0019] (5) Compared with ultraviolet light, the vacuum ultraviolet of the utility model has higher energy and stronger oxidation ability, and can directly split water to produce reactive oxidative species (ROS), mainly including HO · HO2 · etc., and can generate H2O2 in situ, thus being able to efficiently and quickly degrade organic wastewater.

[0020] (6) The organic wastewater purification device combines the Fenton reaction with the vacuum ultraviolet disinfection technology to make up for the shortcomings of each technology and utilize the synergistic benefits to efficiently treat organic wastewater. Vacuum ultraviolet light water splitting can produce HO in situ · , hydrated electrons (e aq - ) and H2O2, while the vacuum ultraviolet light degrades organic pollutants, H2O2 is still accumulated. 2+ : More ROS (mainly HO) are generated · );Fe 2+ Reacts with in situ generated H2O2 to form HO · and Fe 3+ , while Fe 3+ The VUV irradiation simultaneously generates new Fe 2+ and HO · , accelerating the iron redox cycle. 2+ The oxidation product Fe 3+ You can also use e aq - Accelerate the reduction and regeneration of Fe 2+ , and then continue to catalyze the decomposition of H2O2 and produce additional HO · . Vacuum UV light, Fe 2+ A synergistic effect is produced between , and H2O2, thereby further enhancing the oxidation efficiency of the advanced oxidation technology of this technology.

[0021] Therefore, the utility model combines the traditional Fenton reaction with the vacuum ultraviolet disinfection technology, and utilizes the synergistic advantages to greatly improve the treatment efficiency. At the same time, the organic wastewater purification device has undergone structural innovation, which is not only simpler to operate and maintain, but also has significant energy-saving and environmental protection benefits, saving manpower and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0023] Figure 1 A three-dimensional structural diagram of a vacuum ultraviolet Fenton-type integrated organic wastewater purification device provided in an embodiment of the present application.

[0024] Figure 2 A cross-sectional view of a vacuum ultraviolet Fenton-type integrated organic wastewater purification device provided in an embodiment of the present application.

[0025] Figure 3 A top view of a traditional Fenton reaction zone of a vacuum ultraviolet Fenton-type integrated organic wastewater purification device provided in an embodiment of the present application.

[0026] Figure 4 A stereoscopic diagram of a traditional Fenton reaction zone of a vacuum ultraviolet Fenton-type integrated organic wastewater purification device provided in an embodiment of the present application.

[0027] Figure 5 A structural diagram of a disinfection catalytic component provided in an embodiment of the present application.

[0028] Figure 6 A structural diagram of an inner spiral guide plate provided in an embodiment of the present application.

[0029] Figure 7 A structural diagram of an external spiral guide plate provided in an embodiment of the present application.

[0030] Explanation of the reference numerals: purification cylinder 1, drug injection port 11, water inlet pipe 12, drug inlet 13, water outlet pipe 14, bracket 15, disinfection catalytic component 2, upper clamp 21, lamp holder 22, vacuum ultraviolet lamp tube 23, quartz glass tube 24, inner guide baffle 3, outer guide baffle 31, spiral agitator 4, spiral guide plate 5, inner spiral guide plate 51, outer spiral guide plate 52, sludge bucket 6, sludge valve 61. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be described clearly and completely below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0032] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a vacuum ultraviolet Fenton-type integrated organic wastewater purification device, including a purification cylinder 1, a drug injection port 11, a water inlet pipe 12 and a drug inlet 13 are arranged on the top of the purification cylinder 1, and a water outlet pipe 14 is arranged on the side of the purification cylinder 1, and the water outlet pipe 14 is located below the water inlet pipe 12. A truncated cone-shaped mud hopper 6 is arranged at the bottom of the purification cylinder 1 to receive the sludge produced by the traditional Fenton reaction; a sludge valve 61 is arranged at the bottom of the mud hopper 6. Three groups of brackets 15 are fixedly connected to the three sides of the bottom of the purification cylinder 1; the brackets 15 are made of stainless steel, and the surface is smooth and corrosion-resistant. An anti-skid pad is installed at the bottom of the bracket 15 to increase friction and reduce shock. The drug injection port 11 and the drug inlet 13 are respectively added with an oxidant and an iron catalyst.

[0033] Figure 3 and Figure 4 Combination Figure 2 A cylindrical inner guide baffle 3 and a cylindrical outer guide baffle 31 are vertically arranged in the purification tube 1, and the inner guide baffle 3 and the outer guide baffle 31 divide the purification tube 1 into two inner and outer cavities, and the space of the outer cavity is smaller than the space of the inner cavity; the inner cavity of the purification tube 1 is a traditional Fenton reaction zone, and one end of the water inlet pipe 12 passes through the purification tube 1 and extends to the traditional Fenton reaction zone; the outer cavity of the purification tube 1 is a photocatalytic reaction zone, and one end of the water outlet pipe 14 passes through the purification tube 1 and spirally extends to the photocatalytic reaction zone. Figure 2 The direction of water flow is indicated by arrows, especially the direction of water flow in the spiral guide plate. The organic wastewater flows from the water inlet pipe 12 into the traditional Fenton reaction zone, then flows from the inner guide baffle 3 and the outer guide baffle 31 into the photocatalytic reaction zone, and then flows out from the water outlet pipe 14.

[0034] The traditional Fenton reaction zone is provided with a stirring assembly, which includes a multi-layer spiral stirrer 4, which is arranged in a staggered manner from top to bottom, and each layer is staggered in two or three groups of spiral stirrers 4; each spiral stirrer 4 is a multi-section spiral blade that crosses at a certain angle, so that the water flow is diverted multiple times, and at the same time, vortex reverse rotation and cross flow are generated to achieve the purpose of mixing. The stirring assembly can simultaneously produce three mixing effects of diversion, exchange and vortex, with fast and uniform mixing and good effect, simple structure and easy installation. The traditional Fenton reaction zone in this embodiment is located in the central part of the organic wastewater purification device; the top of the traditional Fenton reaction zone is provided with a dosing port 11, a water inlet pipe 12 and a drug inlet 13, and the lower end of the traditional Fenton reaction zone is provided with a sludge hopper 6 and a sludge valve 61.

[0035] like Figure 5 As shown, the photocatalytic reaction zone is provided with a disinfection catalytic component 2 for disinfecting organic wastewater; the disinfection catalytic component 2 comprises a vacuum ultraviolet lamp upper clamp 21, a lamp holder 22, a vacuum ultraviolet lamp 23 and a quartz glass tube 24, the vacuum ultraviolet lamp upper clamp 21 is arranged in a ring shape in the quartz glass tube 24, the vacuum ultraviolet lamp upper clamp 21 is installed with a lamp holder 22, and the vacuum ultraviolet lamp 23 is installed on the lamp holder 22. Multiple groups of ultraviolet lamps 23 disinfect and catalyze the organic wastewater.

[0036] Figure 6 and Figure 7 Combination Figure 2 The inner and outer sides of the disinfection catalytic component 2 are both provided with spiral guide plates 5, and the spiral guide plates 5 form a spiral waterway for the organic wastewater to flow, extending the disinfection catalytic path of the disinfection catalytic component 2, making the disinfection catalysis more thorough.

[0037] The spiral guide plate 5 includes an inner spiral guide plate 51 and an outer spiral guide plate 52. The inner spiral guide plate 51 is a spiral downward guide plate, and the outer spiral guide plate 52 is a spiral upward guide plate. The spiral guide plate 5 in this embodiment prolongs the path of water flow, increases the time that the water flow contacts the vacuum ultraviolet lamp tube, and can ensure that the water flow is always within the irradiation range of the ultraviolet lamp tube during the entire treatment process, thereby making the disinfection process more thorough.

[0038] In this embodiment, multiple groups of vacuum ultraviolet lamps 23 are installed in a quartz glass tube 24 to disinfect organic wastewater. By using the bayonet 21 on the vacuum ultraviolet lamp, it is convenient to install and disassemble the vacuum ultraviolet lamp 23; the setting of multiple groups of ultraviolet lamps can disinfect organic wastewater, which reduces harm to people compared to chlorine disinfection and can remove organic matter in the water; the setting of the spiral guide plate 5 can extend its disinfection catalytic path, making its disinfection catalysis more thorough. The vacuum ultraviolet Fenton oxidation technology adopted by the utility model can treat organic wastewater more efficiently; through the stirring zone equipped with spiral agitators staggered up and down, hydraulic stirring can be used to mix the organic wastewater and the oxidant evenly, and no electricity consumption is required, which has the benefits of energy saving and environmental protection.

[0039] This embodiment can treat organic wastewater of different water qualities by increasing or decreasing the number of vacuum ultraviolet lamps installed. A reasonable number of ultraviolet lamps can not only fully disinfect the organic wastewater, but also reduce losses and save electricity. The upper clamping port where the vacuum ultraviolet lamp is not installed is covered with a sealing cover to prevent ultraviolet light leakage.

[0040] The working process of the utility model is as follows: the organic wastewater to be treated enters the purification cylinder 1 from the water inlet 12, and at the same time, an oxidant is added from the dosing port 11, and an iron catalyst is added from the dosing port 13. After the water to be treated and the reagent are stirred by the multi-layer spiral stirrer 4, the organic wastewater and the oxidant added from the dosing port 11 can be mixed more fully; at the same time, the external power switch is pressed, and the vacuum ultraviolet lamp 23 is turned on; the mixed liquid of the organic wastewater and the oxidant added from the dosing port 11 gradually flows upward along the guide baffle 3, and the sludge such as flocculent particles generated by the reaction is collected in the sludge discharge bucket 6 and discharged regularly through the sludge valve 61. After being buffered by the baffle, the water flows downward in a spiral shape from the inner spiral guide plate 51 to the lower part of the device, passes through the water outlet area of ​​the lower inner spiral guide plate, and flows upward in a spiral shape along the outer spiral guide plate 52 to the upper part of the device. During the flow, it is disinfected and catalyzed by the surrounding vacuum ultraviolet lamp tube 23, and then flows out through the water outlet pipe 14. When finished, press the external power switch to stop.

[0041] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.

Claims

1. A vacuum ultraviolet Fenton-type integrated organic wastewater purification device, characterized in that: The invention comprises a purification cylinder (1), wherein the top of the purification cylinder (1) is provided with a drug injection port (11), a water inlet pipe (12) and a drug inlet port (13); the side of the purification cylinder (1) is provided with a water outlet pipe (14); the bottom of the purification cylinder (1) is provided with a truncated cone-shaped sludge discharge hopper (6) for receiving sludge generated by a conventional Fenton reaction; and the bottom of the sludge discharge hopper (6) is provided with a sludge valve (61); A cylindrical inner guide baffle (3) and a cylindrical outer guide baffle (31) are vertically arranged in the purification cylinder (1), and the inner guide baffle (3) and the outer guide baffle (31) divide the purification cylinder (1) into two inner and outer cavities, and the space of the outer cavity is smaller than the space of the inner cavity; the inner cavity of the purification cylinder (1) is a traditional Fenton reaction zone, and one end of the water inlet pipe (12) passes through the purification cylinder (1) and extends to the traditional Fenton reaction zone; the outer cavity of the purification cylinder (1) is a photocatalytic reaction zone, and one end of the water outlet pipe (14) passes through the purification cylinder (1) and spirally extends to the photocatalytic reaction zone; The conventional Fenton reaction zone is provided with a stirring assembly, the stirring assembly comprising a multi-layer spiral stirrer (4), the multi-layer spiral stirrer (4) is arranged in a staggered manner from top to bottom, the spiral stirrer (4) is a multi-section spiral blade that crosses at a certain angle, so that the water flow is divided multiple times, and vortex reverse rotation and cross flow are generated at the same time, so as to achieve the purpose of mixing; The photocatalytic reaction zone is provided with a disinfection catalytic component (2) for disinfecting and catalyzing organic wastewater; the disinfection catalytic component (2) comprises a vacuum ultraviolet lamp tube upper clamp (21), a lamp holder (22), a vacuum ultraviolet lamp tube (23) and a quartz glass tube (24); the vacuum ultraviolet lamp tube upper clamp (21) is arranged in a ring shape in the quartz glass tube (24); the vacuum ultraviolet lamp tube upper clamp (21) is installed with the lamp holder (22); and the vacuum ultraviolet lamp tube (23) is installed on the lamp holder (22); The disinfection catalytic component (2) is provided with spiral guide plates (5) on both the inside and outside, and the spiral guide plates (5) form a spiral waterway for the organic wastewater to flow, thereby extending the disinfection catalytic path of the disinfection catalytic component (2) and making the disinfection catalysis more thorough.

2. A vacuum ultraviolet Fenton-type integrated organic wastewater purification device according to claim 1, characterized in that: The spiral guide plate (5) comprises an inner spiral guide plate (51) and an outer spiral guide plate (52), wherein the inner spiral guide plate (51) is a spiral downward guide plate, and the outer spiral guide plate (52) is a spiral upward guide plate.

3. A vacuum ultraviolet Fenton-type integrated organic wastewater purification device according to claim 1, characterized in that: Three groups of brackets (15) are connected to the bottom of the purification cylinder (1).

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