Sewage treatment experimental device

Abstract

The utility model provides a sewage treatment experiment device, which comprises an ozone generation assembly, a nanometer bubble generation assembly, an aeration assembly and a tail gas treatment assembly, and is characterized in that the nanometer bubble generation assembly is connected to the ozone generation assembly through a first connecting pipe; the aeration assembly is connected to the nano-bubble generation assembly through a second connecting pipe and used for containing sewage, nano-scale ozone bubbles enter the aeration assembly through the second connecting pipe to treat the sewage, and the tail gas treatment assembly is connected to the aeration assembly through a third connecting pipe and used for treating tail gas released by the aeration assembly; therefore, when floating foam on the water surface floats to the exhaust port of the aeration assembly, as the interior of the aeration assembly is in positive pressure, the floating foam and ozone gas enter the tail gas treatment assembly along the third connecting pipe under the driving of the positive pressure, and the tail gas treatment assembly is used for separating and decomposing the ozone gas, so that the ozone gas is prevented from being directly exhausted into air; therefore, the experiment environment and testers are harmed.

Description

Technical Field

[0001] The present disclosure relates to the technical field of sewage treatment experiments, and in particular to a sewage treatment experimental device. Background Art

[0002] Since ultrafine nanobubbles are combined with ozone dosing technology to treat industrial wastewater, and industrial wastewater is complex in type and diverse in composition, rigorous experiments are needed for industrial wastewater that has not yet adopted ultrafine nanobubble technology for ozone dosing treatment to demonstrate whether ultrafine nanobubble technology combined with ozone gas can effectively or optimize the operating conditions and operating costs of the original process, thereby reducing the treatment cost of industrial wastewater.

[0003] However, for sewage containing suspended matter, emulsifiers and other components, when conducting experiments, due to the huge number of ultrafine nano bubbles in the sewage, and their positive and negative charges, stable structure, small size, and not easy to break, they will have a significant flotation effect on the water containing suspended matter or emulsifiers, generating a large amount of foam, causing the foam to expand along with nano-scale ozone bubbles and overflow the aeration column, causing the foam and ozone gas to leak, causing harm to the laboratory environment and experimenters. Utility Model Content

[0004] The present disclosure provides a sewage treatment experimental device to at least solve the above-mentioned problems in the prior art.

[0005] To achieve the above-mentioned purpose, the present disclosure provides the following technical solutions: A sewage treatment experimental device, comprising: an ozone generating component for generating ozone gas;

[0006] A nano bubble generating assembly is connected to the ozone generating assembly through a first connecting pipe and is used to process the ozone gas generated by the ozone generating assembly into nano-scale ozone bubbles;

[0007] an aeration component, connected to the nano bubble generating component through a second connecting pipe and used to contain sewage, and nano-scale ozone bubbles enter the aeration component through the second connecting pipe to treat the sewage;

[0008] The tail gas treatment component is connected to the aeration component through a third connecting pipe and is used to treat the tail gas released by the aeration component.

[0009] In one embodiment, the exhaust gas treatment component includes:

[0010] A gas-liquid separation container, connected to the exhaust port of the aeration component through the third connecting pipe, for containing and separating the froth and ozone gas overflowing from the aeration component;

[0011] The ozone decomposition component is connected to the gas-liquid separation container through a fourth connecting pipe and is used to decompose the ozone gas separated by the gas-liquid separation container.

[0012] In one embodiment, the ozone decomposition component is a heated ozone decomposer.

[0013] In one embodiment, the exhaust gas treatment component includes:

[0014] A gas-liquid separation container, connected to the exhaust port of the aeration component through the third connecting pipe, for containing and separating the froth and ozone gas overflowing from the aeration component;

[0015] an air pump connected to the gas-liquid separation container via a fifth connecting pipe;

[0016] A circulation pipe, one end of which is connected to the air pump, and the other end of which is connected to the first connecting pipe.

[0017] In one possible implementation manner, the exhaust gas treatment component further comprises an ozone concentration detector, which is connected to the exhaust port of the ozone decomposition component and is used to detect the ozone concentration at the exhaust port of the ozone decomposition component.

[0018] In one embodiment, the aeration assembly comprises:

[0019] an aeration container, connected to the nano bubble generating assembly through a second connecting pipe, and connected to the tail gas treatment assembly through a third connecting pipe, the aeration container is used to hold sewage and is provided with an air inlet and an air outlet, the air inlet of the aeration container is arranged on the bottom wall of the aeration container, and the air outlet of the aeration container is arranged on the top of the aeration container;

[0020] A support frame is connected to the bottom of the aeration container and is used to support the aeration container.

[0021] In one embodiment, the aeration assembly further comprises a stirring member, and the stirring member comprises:

[0022] A rotating rod passes through the bottom wall of the aeration container and is rotatably and hermetically connected to the bottom wall of the aeration container;

[0023] A plurality of stirring blades, wherein the plurality of stirring blades are arranged at intervals in the circumferential direction with the rotating rod as an axis and connected to the rotating rod;

[0024] A driving member is connected to the aeration container and the rotating rod, and the driving member is used to drive the rotating rod to drive the plurality of stirring blades to rotate.

[0025] In one embodiment, the aeration container comprises:

[0026] A first aeration tube, wherein the first aeration tube is a straight-cylindrical structure, and the rotating rod and the plurality of stirring blades are accommodated in the first aeration tube;

[0027] The second aeration tube is connected to the first aeration tube, and the second aeration tube is a spiral structure; wherein,

[0028] The rotating rod penetrates the bottom wall of the first aeration tube and is rotatably sealed and connected to the bottom wall of the first aeration tube. The driving member is fixed to the bottom wall of the first aeration tube.

[0029] In one embodiment, the first aeration pipe and the first connecting pipe are an integrally formed structure.

[0030] In one embodiment, the circulation pipe and the first connecting pipe are connected via a three-way valve.

[0031] In the above-mentioned sewage treatment experimental device, first, the ozone gas generated by the ozone generating assembly is transported to the air inlet of the nanobubble generating assembly through the first connecting pipe, and then, the nanobubble generating assembly processes the ozone bubbles into nano-scale ozone bubbles, and transports them to the aeration assembly through the second connecting pipe for sewage degradation treatment, and finally, when the foam on the water surface floats to the exhaust port of the aeration assembly, due to the positive pressure inside the aeration assembly, the foam and ozone gas enter the tail gas treatment assembly along the third connecting pipe driven by the positive pressure, and the tail gas treatment assembly is used to separate and decompose the ozone gas to prevent the ozone gas from being directly discharged into the air, thereby causing harm to the experimental environment and experimenters.

[0032] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present disclosure, nor is it intended to limit the scope of the present disclosure. Other features of the present disclosure will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and other objects, features and advantages of the exemplary embodiments of the present disclosure will become readily understood by reading the detailed description below with reference to the accompanying drawings. In the accompanying drawings, several embodiments of the present disclosure are shown in an exemplary and non-limiting manner, in which:

[0034] In the drawings, the same or corresponding reference numerals represent the same or corresponding parts.

[0035] Figure 1 A schematic diagram of the structure of a sewage treatment experimental device in an embodiment of the present disclosure is shown;

[0036] Figure 2 Another schematic diagram of the structure of the sewage treatment experimental device in the embodiment of the present disclosure is shown;

[0037] Figure 3Shows Figure 2 Schematic cross-section of the aeration assembly.

[0038] Description of the numbers in the figure:

[0039] In the figure: 11, ozone generating assembly; 12, nano bubble generating assembly; 13, aeration assembly; 131, aeration container; 1311, first aeration pipe; 1312, second aeration pipe; 132, support frame; 133, stirring member; 1331, rotating rod; 1332, stirring blade; 1333, driving member; 14, tail gas treatment assembly; 141, gas-liquid separation container; 142, ozone decomposition assembly; 143, air pump; 144, circulation pipe; 145, ozone concentration detector; 15, first connecting pipe; 16, second connecting pipe; 17, third connecting pipe; 18, fourth connecting pipe; 19, fifth connecting pipe. DETAILED DESCRIPTION

[0040] In order to make the purpose, features, and advantages of the present disclosure more obvious and easy to understand, the technical solutions in the embodiments of the present disclosure will be clearly and completely described below in conjunction with the drawings in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, not all of the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present disclosure.

[0041] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps recorded in this disclosure can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of this disclosure can be achieved, and this document is not limited here.

[0042] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present disclosure, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0043] The following describes in detail the various embodiments of the present application in conjunction with the accompanying drawings.

[0044] See also Figure 1The present embodiment provides a sewage treatment experimental device, which includes an ozone generating assembly 11, a nano bubble generating assembly 12, an aeration assembly 13 and an exhaust gas treatment assembly 14. The ozone generating assembly 11 is used to generate ozone gas. The nano bubble generating assembly 12 is connected to the ozone generating assembly 11 through a first connecting pipe 15 and is used to process the ozone gas generated by the ozone generating assembly 11 into nano-scale ozone bubbles. The aeration assembly 13 is connected to the nano bubble generating assembly 12 through a second connecting pipe 16 and is used to hold sewage. The nano-scale ozone bubbles enter the aeration assembly 13 through the second connecting pipe 16 and then treat the sewage. The exhaust gas treatment assembly 14 is connected to the aeration assembly 13 through a third connecting pipe 17 and is used to treat the exhaust gas released by the aeration assembly 13. Exemplarily, the ozone generating assembly 11 may be an ozone generator, and the nano bubble generating assembly 12 may be an ultra-micro nano bubble generator.

[0045] In the above-mentioned sewage treatment experimental device, first, the ozone gas generated by the ozone generating component 11 is transported to the air inlet of the nano bubble generating component 12 through the first connecting pipe 15, and then, the nano bubble generating component 12 processes the ozone bubbles into nano-scale ozone bubbles, and transports them to the aeration component 13 through the second connecting pipe 16 for sewage degradation treatment. Finally, when the foam on the water surface floats to the exhaust port of the aeration component 13, due to the positive pressure inside the aeration component 13, the foam and ozone gas enter the tail gas treatment component 14 along the third connecting pipe 17 driven by the positive pressure. The tail gas treatment component 14 is used to separate and decompose the ozone gas to prevent the ozone gas from being directly discharged into the air, thereby causing harm to the experimental environment and experimenters.

[0046] It can be understood that ultrafine nanobubbles can provide ozone gas transfer and dissolution in sewage, increase the solubility and utilization rate of ozone, and thus improve the sewage treatment effect. In addition, the size of ultrafine nanobubbles can also provide ozone with a larger contact area with sewage, promoting the mass transfer and reaction of harmful substances at the gas-liquid and gas-solid interfaces.

[0047] Nano-scale ozone bubbles have a certain ability to degrade organic matter (COD) in sewage. When nano-scale ozone bubbles rise to the water surface and burst, they will produce highly oxidizing free radicals to decompose organic matter in the water. Moreover, free radicals have a good decomposition effect on chromophores, thereby eliminating the high chroma in sewage. Nano-scale ozone bubbles can also effectively float flocs, small suspended solids and tiny oil droplets in sewage.

[0048] From the Stokes equation, we know that the smaller the diameter of the bubbles in the water, the smaller the rising rate. Therefore, ultrafine nanobubbles can stay in the sewage for a longer time, so as to provide more sufficient degradation time for nano-ozone.

[0049] See also Figure 1In some embodiments, the exhaust gas treatment component 14 includes a gas-liquid separation container 141 and an ozone decomposition component 142. The gas-liquid separation container 141 is connected to the exhaust port of the aeration component 13 through a third connecting pipe 17, and is used to contain and separate the foam and ozone gas overflowing from the aeration component 13. The ozone decomposition component 142 is connected to the gas-liquid separation container 141 through a fourth connecting pipe 18, and is used to decompose the ozone gas separated by the gas-liquid separation container 141.

[0050] In this way, the froth and ozone gas generated in the aeration assembly 13 enter the gas-liquid separation container 141 through the third connecting pipe 17 under positive pressure.

[0051] In this embodiment, a defoaming agent is added into the gas-liquid separation container 141 , and the defoaming agent is used to accelerate the elimination of floating foam in the gas-liquid separation container 141 , thereby reducing the space occupied by the floating foam.

[0052] It is understandable that adding a defoaming agent to wastewater containing an emulsion will interfere with the experimental structure. Therefore, in order to ensure the accuracy of the test data, a defoaming agent cannot be added to the aeration component 13 to eliminate the foam.

[0053] In some embodiments, the ozone decomposition component 142 is a heated ozone decomposer to facilitate heating and decomposing ozone into oxygen. The heated ozone decomposer utilizes the instability of ozone, which is easily decomposed into oxygen when heated. The heated ozone decomposer is an existing device.

[0054] See also Figure 1 In some embodiments, the exhaust gas treatment component 14 also includes an ozone concentration detector 145, which is connected to the exhaust port of the ozone decomposition component 142 and is used to detect the ozone concentration at the exhaust port of the ozone decomposition component 142; so as to detect whether the ozone is fully decomposed. When the ozone is not fully decomposed, the heating temperature of the heated ozone decomposer is increased to decompose the ozone to meet the emission standards.

[0055] See also Figure 2 In some embodiments, the exhaust gas treatment component 14 includes a gas-liquid separation container 141, an air pump 143 and a circulation pipe 144. The gas-liquid separation container 141 is connected to the exhaust port of the aeration component 13 through the third connecting pipe 17. The gas-liquid separation container 141 is used to hold and separate the foam and ozone gas overflowing from the aeration component 13. The air pump 143 is connected to the gas-liquid separation container 141 through the fifth connecting pipe 19. One end of the circulation pipe 144 is connected to the air pump 143, and the other end of the circulation pipe 144 is connected to the first connecting pipe 15.

[0056] In this way, the ozone gas separated by the enterprise separation container is extracted into the circulation pipe 144 through the air pump 143, and enters the nano bubble generating component 12 again through the first connecting pipe 15 to realize the recycling of the ozone gas, thereby reducing the experimental cost.

[0057] In this embodiment, the circulation pipe 144 and the first connecting pipe 15 are connected via a three-way valve.

[0058] See also Figure 2 In some embodiments, the aeration component 13 includes an aeration container 131 and a support frame 1313. The aeration container 131 is connected to the nano bubble generating component 12 through the second connecting pipe 16, and is connected to the tail gas treatment component 14 through the third connecting pipe 17. The aeration container 131 is used to hold sewage and is provided with an air inlet and an exhaust port. The air inlet of the aeration container 131 is arranged on the bottom wall of the aeration container 131, and the exhaust port of the aeration container 131 is arranged on the top of the aeration container 131. The support frame 1313 is connected to the bottom of the aeration container 131 and is used to support the aeration container 131.

[0059] In this way, the aeration container 131 is supported by the support frame 1313 to form a space between the bottom wall of the aeration container 131 and the ground, so as to facilitate the installation of the driving member 1333 on the bottom wall of the aeration container 131 and facilitate the installation between the second connecting pipe 16 and the bottom wall of the aeration container 131.

[0060] In this embodiment, the support frame 1313 includes a plurality of legs, which are arranged circumferentially spaced about the center line of the aeration container 131, and one end of the leg is connected to the bottom wall of the aeration container 131, and the other end of the leg is supported on the ground. For example, the number of the legs can be three or four.

[0061] See also Figure 3 In some embodiments, the aeration assembly 13 further includes a stirring member 133, the stirring member 133 includes a rotating rod 1331, a plurality of stirring blades 1332 and a driving member 1333, the rotating rod 1331 penetrates the bottom wall of the aeration container 131, and is rotatably and sealedly connected to the bottom wall of the aeration container 131, the plurality of stirring blades 1332 are arranged circumferentially with the rotating rod 1331 as an axis and are connected to the rotating rod 1331, the driving member 1333 is connected to the aeration container 131 and the rotating rod 1331, and the driving member 1333 is used to drive the rotating rod 1331 to drive the plurality of stirring blades 1332 to rotate. Exemplarily, the driving member 1333 may be a motor.

[0062] In this way, the driving member 1333 drives the rotating rod 1331 to drive the multiple stirring blades 1332 to rotate. The multiple stirring blades 1332 will break up the nano-scale ozone bubbles entering the bottom of the aeration container 131 when rotating, so that the nano-scale ozone bubbles can be more evenly dispersed in the sewage, thereby improving the degradation effect of the sewage and avoiding the experimental structure deviation caused by uneven mixing of the nano-scale ozone bubbles.

[0063] See also Figure 3 In some embodiments, the aeration container 131 includes a first aeration tube 1311 and a second aeration tube 1312. The first aeration tube 1311 is a straight cylindrical structure. The rotating rod 1331 and a plurality of stirring blades 1332 are housed in the first aeration tube 1311. The second aeration tube 1312 is connected to the first aeration tube 1311. The second aeration tube 1312 is a spiral structure. The rotating rod 1331 penetrates the bottom wall of the first aeration tube 1311 and is rotatably sealed with the bottom wall of the first aeration tube 1311. The driving member 1333 is fixed to the bottom wall of the first aeration tube 1311.

[0064] In this way, by designing the second aeration tube 1312 as a spiral structure, the effective length of the second aeration tube 1312 can be increased within a unit height space, thereby increasing the running path of the nano-scale ozone bubbles in the exposure container, thereby extending the residence time of the nano-scale ozone bubbles in the sewage, which is beneficial to the experiment of the effect of the residence time of the nano-scale bubbles in the sewage on the sewage degradation effect.

[0065] In this embodiment, the first aeration pipe 1311 and the first connecting pipe 15 are an integrally formed structure to ensure the strength of the connection between the first aeration pipe 1311 and the first connecting pipe 15 to avoid leakage.

[0066] In this embodiment, the first aeration tube 1311 and the second aeration tube 1312 are both made of transparent materials to facilitate direct observation of the sewage purification effect.

[0067] The working principle of the above-mentioned sewage treatment experimental device is as follows:

[0068] First, the ozone gas generated by the ozone generating assembly 11 is transported to the air inlet of the nano bubble generating assembly 12 through the first connecting pipe 15. The nano bubble generating assembly 12 processes the ozone bubbles into nano-scale ozone bubbles and transports them to the aeration assembly 13 through the second connecting pipe 16 for degrading the sewage.

[0069] Then, the driving member 1333 drives the rotating rod 1331 to drive the plurality of stirring blades 1332 to rotate, so that the nano-scale ozone bubbles are evenly dispersed in the exposure container;

[0070] Finally, when the foam on the water surface floats to the exhaust port of the aeration component 13, due to the positive pressure inside the aeration component 13, the foam and ozone gas are driven by the positive pressure to enter the gas-liquid separation container 141 added with a defoaming agent along the third connecting pipe 17 to dissolve the foam, and the ozone is heated and decomposed through the ozone decomposition component 142 to prevent the ozone gas from being directly discharged into the air, thereby causing harm to the experimental environment and experimenters.

[0071] The above is only a specific embodiment of the present disclosure, but the protection scope of the present disclosure is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present disclosure, which should be included in the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure should be based on the protection scope of the claims.

Claims

1. A sewage treatment experimental device, characterized in that: include: An ozone generating assembly for generating ozone gas; A nano bubble generating assembly is connected to the ozone generating assembly through a first connecting pipe and is used to process the ozone gas generated by the ozone generating assembly into nano-scale ozone bubbles; an aeration component, connected to the nano bubble generating component through a second connecting pipe and used to contain sewage, and nano-scale ozone bubbles enter the aeration component through the second connecting pipe to treat the sewage; The tail gas treatment component is connected to the aeration component through a third connecting pipe and is used to treat the tail gas released by the aeration component.

2. The sewage treatment experimental device according to claim 1, characterized in that: The exhaust gas treatment component comprises: A gas-liquid separation container, connected to the exhaust port of the aeration component through the third connecting pipe, for containing and separating the froth and ozone gas overflowing from the aeration component; The ozone decomposition component is connected to the gas-liquid separation container through a fourth connecting pipe and is used to decompose the ozone gas separated by the gas-liquid separation container.

3. The sewage treatment experimental device according to claim 2, characterized in that: The ozone decomposition component is a heating type ozone decomposer.

4. The sewage treatment experimental device according to claim 1, characterized in that: The exhaust gas treatment component comprises: A gas-liquid separation container, connected to the exhaust port of the aeration component through the third connecting pipe, for containing and separating the froth and ozone gas overflowing from the aeration component; an air pump connected to the gas-liquid separation container via a fifth connecting pipe; A circulation pipe, one end of which is connected to the air pump, and the other end of which is connected to the first connecting pipe.

5. The sewage treatment experimental device according to claim 2, characterized in that: The tail gas treatment component also includes an ozone concentration detector, which is connected to the exhaust port of the ozone decomposition component and is used to detect the ozone concentration at the exhaust port of the ozone decomposition component.

6. The sewage treatment experimental device according to claim 1, characterized in that: The aeration assembly comprises: an aeration container, connected to the nano bubble generating assembly through a second connecting pipe, and connected to the tail gas treatment assembly through a third connecting pipe, the aeration container is used to hold sewage and is provided with an air inlet and an air outlet, the air inlet of the aeration container is arranged on the bottom wall of the aeration container, and the air outlet of the aeration container is arranged on the top of the aeration container; A support frame is connected to the bottom of the aeration container and is used to support the aeration container.

7. The sewage treatment experimental device according to claim 6, characterized in that: The aeration assembly further includes a stirring member, and the stirring member includes: A rotating rod passes through the bottom wall of the aeration container and is rotatably and hermetically connected to the bottom wall of the aeration container; A plurality of stirring blades, wherein the plurality of stirring blades are arranged at intervals in the circumferential direction with the rotating rod as an axis and connected to the rotating rod; A driving member is connected to the aeration container and the rotating rod, and the driving member is used to drive the rotating rod to drive the plurality of stirring blades to rotate.

8. The sewage treatment experimental device according to claim 7, characterized in that: The aeration container comprises: A first aeration tube, wherein the first aeration tube is a straight-cylindrical structure, and the rotating rod and the plurality of stirring blades are accommodated in the first aeration tube; The second aeration tube is connected to the first aeration tube, and the second aeration tube is a spiral structure; wherein, The rotating rod penetrates the bottom wall of the first aeration tube and is rotatably sealed and connected to the bottom wall of the first aeration tube. The driving member is fixed to the bottom wall of the first aeration tube.

9. The sewage treatment experimental device according to claim 8, characterized in that: The first aeration pipe and the first connecting pipe are an integrally formed structure.

10. The sewage treatment experimental device according to claim 4, characterized in that: The circulation pipe is connected to the first connecting pipe via a three-way valve.

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