Sewage treatment device
By incorporating multiple photocatalysts into the wastewater treatment device and integrating them with the sleeve assembly, and by placing the first and second light-emitting parts on the inner and outer peripheral walls of the sleeve assembly respectively, the problem of insufficient reaction between ultraviolet light and photocatalysts when wastewater is turbid is solved, thus achieving efficient removal of harmful substances from wastewater.
Patent Information
- Application Number
- CN202422889898.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2034-11-26
AI Technical Summary
When sewage is turbid, ultraviolet rays are weakened when passing through it, resulting in insufficient reaction between ultraviolet rays and photocatalysts and poor sewage purification effect.
The design incorporates multiple photocatalysts integrated with the sleeve assembly. A first light-emitting part and a second light-emitting part are respectively installed on the inner and outer peripheral walls of the sleeve assembly. The first light-emitting part emits ultraviolet light, which reacts with the photocatalyst to produce substances that react within the space surrounded by the inner peripheral wall of the sleeve assembly and the outer peripheral wall of the waterproof pipe. The second light-emitting part is installed adjacent to the photocatalyst to prevent sewage from obstructing the propagation of ultraviolet light and to ensure a full reaction.
It improves wastewater treatment efficiency at a lower cost, effectively removing harmful substances from wastewater, including organic pollutants and heavy metal ions such as formaldehyde, benzene, xylene, dimethylformamide, and chlorobenzene.
Smart Images
Figure CN223674377U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to sewage treatment technical field, specifically, relate to a sewage treatment device. BACKGROUND
[0002] The traditional sewage purification method is to add strong acid or strong base to destroy pollutants in sewage, and then add acid or base to neutralize the first added strong acid or strong base. The technical challenge is that it is difficult to achieve complete neutralization of the first added strong acid or strong base, which can easily cause secondary pollution. Therefore, photocatalyst sewage treatment technology that does not need to add strong acid or strong base to sewage is increasingly attracting people's attention. Photocatalyst technology is a method that uses light to initiate catalytic reaction and excite the strong oxidation and reduction ability of photocatalyst substances to decompose pollutants. Only the photocatalyst needs to be irradiated by light of appropriate wavelength during the reaction, and no traditional strong acid or strong base needs to be added, so there is no secondary pollution. The photocatalyst is usually formed by nanoparticles, and its components can be titanium dioxide, zinc oxide, cadmium sulfide, tungsten trioxide, iron oxide, lead sulfide, tin dioxide, zinc sulfide, strontium titanate, silicon dioxide, etc., and its size is between 1 nm and 50 μm.
[0003] Usually, photocatalysts are arranged on the inner circumferential wall of the sewage pipeline, and then a transparent waterproof pipe is arranged in the middle of the inner circumferential wall of the sewage pipeline, and then a light-emitting body emitting ultraviolet rays is arranged on the inner circumferential wall of the waterproof pipe. After the ultraviolet rays contact the photocatalyst, they can produce strong oxidation and reduction ability, and can decompose organic pollutants such as formaldehyde, benzene, dimethylbenzene, dimethylformamide, and chlorobenzene by destroying the molecular chain of organic matter. Through the negative charge generated under light and the action of metal ions, lead, chromium, mercury and other heavy metal ions in water can be removed, thereby playing a role in sewage purification. However, when the sewage is too turbid, the ultraviolet rays will be weakened when passing through the sewage, the reaction of the ultraviolet rays with the photocatalyst will not be sufficient, and the sewage purification effect will be poor. SUMMARY
[0004] To solve the problem of insufficient reaction of ultraviolet rays with photocatalyst, the utility model provides a sewage treatment device, which comprises:
[0005] A plurality of photocatalysts;
[0006] A sleeve assembly, the photocatalyst is detachably connected with the inner circumferential wall of the sleeve assembly, and a plurality of photocatalysts are arranged at intervals;
[0007] The light-emitting assembly comprises a support part, a first light-emitting part, a waterproof pipe, and a second light-emitting part. The support part is detachably connected with the sleeve assembly. The waterproof pipe is detachably connected with the support part. The waterproof pipe is arranged in the hollow cavity of the sleeve assembly. The waterproof pipe is arranged in a spaced manner with the sleeve assembly. The first light-emitting part is detachably connected with the inner circumferential wall of the waterproof pipe. The second light-emitting part is detachably connected with the sleeve assembly. The second light-emitting part is arranged between the inner circumferential wall of the sleeve assembly and the outer circumferential wall of the sleeve assembly. The second light-emitting part is arranged in a proximity manner with the photocatalyst.
[0008] The sewage treatment device comprises a treatment state. In the treatment state, the ultraviolet light emitted by the first light-emitting part and the ultraviolet light emitted by the second light-emitting part are irradiated towards the photocatalyst. The substances generated by the reaction of the ultraviolet light emitted by the first light-emitting part and the ultraviolet light emitted by the second light-emitting part with the photocatalyst are arranged in the space enclosed by the inner circumferential wall of the sleeve assembly and the outer circumferential wall of the waterproof pipe. In some embodiments, the sleeve assembly comprises a sleeve unit. The sleeve unit comprises a pipe wall and at least one protruding part. One end of the protruding part is fixedly connected with the inner circumferential wall of the pipe wall, and the other end extends towards the direction close to the central axis of the pipe wall and away from the outer circumferential wall of the pipe wall. At least part of the photocatalyst is detachably connected with the inner circumferential wall of the pipe wall. At least part of the photocatalyst is detachably connected with the side of the protruding part away from the outer circumferential wall of the pipe wall.
[0009] In some embodiments, the second light-emitting part is detachably connected with the protruding part. The second light-emitting part is arranged in the space enclosed by the protruding part and the pipe wall.
[0010] In some embodiments, the sleeve assembly further comprises a first reflecting part. The first reflecting part is detachably connected with the outer circumferential wall of the sleeve unit.
[0011] In some embodiments, at least part of the photocatalyst is detachably connected with the outer circumferential wall of the waterproof pipe.
[0012] In some embodiments, the waterproof pipe comprises a waterproof shell and at least one waterproof protruding part. The waterproof shell is detachably connected with the support part. One end of the waterproof protruding part is fixedly connected with the outer circumferential wall of the waterproof shell, and the other end extends towards the direction close to the sleeve assembly. The photocatalyst is detachably connected with the outer circumferential wall of the waterproof shell and the side of the waterproof protruding part close to the sleeve assembly, respectively.
[0013] In some embodiments, the first light-emitting part is detachably connected with the waterproof protruding part. The first light-emitting part is arranged in the space enclosed by the waterproof protruding part.
[0014] In some embodiments, the light-emitting assembly further comprises a second reflecting part; the second reflecting part is detachably connected with the inner circumferential wall of the waterproof pipe; the second reflecting part is arranged in a spaced manner with the first light-emitting part.
[0015] In some embodiments, the supporting part comprises a supporting body and a flow-through hole; one end of the supporting body is detachably connected with the waterproof pipe, and the other end is detachably connected with the sleeve assembly; the flow-through hole penetrates through both sides of the supporting body along the axial direction of the sleeve assembly.
[0016] In some embodiments, the waterproof pipe and the sleeve assembly are coaxially arranged.
[0017] To solve the problem of insufficient reaction of ultraviolet light and photocatalyst, the utility model has the following advantages:
[0018] The first light-emitting part is arranged in the transparent waterproof pipe, and is simple to assemble and low in cost; the ultraviolet light is emitted towards the sleeve assembly, and the reaction of the photocatalyst irradiated by the ultraviolet light can remove harmful substances in the sewage. The second light-emitting part is arranged in the transparent sleeve assembly, and is difficult to assemble and high in cost, but is close to the photocatalyst, and there is no sewage to hinder the ultraviolet light propagation between the second light-emitting part and the photocatalyst, so that the sewage treatment efficiency is high. The first light-emitting part and the second light-emitting part are combined, so that the harmful substances in the sewage can be fully removed under the premise of less cost increase. BRIEF DESCRIPTION OF DRAWINGS
[0019] Figure 1 A schematic view of a sewage treatment device of one embodiment is shown;
[0020] Figure 2 A partial schematic view of a sewage treatment device of another embodiment is shown.
[0021] Reference signs: 01, sleeve assembly; 11, sleeve unit; 111, pipe wall; 112, protruding part; 12, first reflecting part; 02, light-emitting assembly; 21, supporting part; 211, supporting body; 212, flow-through hole; 22, first light-emitting part; 23, waterproof pipe; 231, waterproof shell; 232, waterproof protrusion; 24, second reflecting part; 25, second light-emitting part; 03, photocatalyst. DETAILED DESCRIPTION
[0022] The content of the present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that the discussion of these embodiments is only to enable those skilled in the art to better understand and thus implement the content of the present disclosure, and is not intended to imply any limitation on the scope of the present disclosure.
[0023] As used herein, the terms "comprises," "comprising," "includes," "including," "has," "having," "contains," "containing," or any other variation thereof, are intended to be inclusive of a non-exclusive inclusion. The term "based on" is intended to be read as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are intended to be read as "at least one embodiment." The term "another embodiment" is intended to be read as "at least one other embodiment." The terms "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "lateral," "longitudinal," and the like are used for description only and are not intended to be limiting as to the position or orientation of the device, element, or component being described. These terms are used primarily just to describe particular embodiments and, unless otherwise specified, are not meant to limit the position or orientation of the devices, elements, or components being described in just the position or orientation described. Additionally, these terms can be used in different ways depending on the context in which they are used. For example, the term "upper" can be used to describe a component that is positioned above another component, but also can be used to describe a component that is positioned below another component. Unless otherwise specified, the terms "mount," "set," "provided with," "connected," "linked," and the like should be interpreted broadly. For example, they can mean fixedly connected, removably connected, or integrally formed; they can mean mechanically connected, or electrically connected; they can mean directly connected, or indirectly connected via an intermediary; and they can mean internal connections between two devices, elements, or components, or external connections between two devices, elements, or components. Unless otherwise specified, the terms "first," "second," and the like are used to distinguish between different elements, and are not meant to indicate or imply relative importance or significance of the elements being distinguished. Unless otherwise specified, the term "plurality" means two or more.
[0024] In this embodiment, generally speaking, a layer of photocatalyst 03 material will be laid on the inner wall of the sewage pipe, and between the layer of photocatalyst 03 and the inner wall of the pipe, a transparent waterproof sleeve will be ingeniously installed. Next, a light source device capable of emitting ultraviolet rays will be placed on the inner wall of the waterproof sleeve. When ultraviolet rays meet photocatalyst 03, they will jointly produce strong oxidation-reduction effect, which is sufficient to effectively decompose organic pollutants such as formaldehyde, benzene, xylene, dimethylformamide, chlorobenzene, etc. in sewage by breaking the molecular chain of organic matter. At the same time, the negative charges generated under the action of light can also react with metal ions, thereby removing heavy metal ions such as lead, chromium, mercury, etc. in the sewage, achieving the purpose of sewage purification. However, it is worth noting that when the turbidity of the sewage is high, the ultraviolet rays will be greatly attenuated in the process of penetrating the sewage, resulting in insufficient reaction of ultraviolet rays with photocatalyst 03, and thus affecting the effect of sewage purification, therefore a sewage treatment device is proposed. As shown in Figure 1 、 Figure 2 the sewage treatment device can include a plurality of photocatalysts 03, a sleeve assembly 01, and a light emitting assembly 02. The photocatalyst 03 can be detachably connected with the inner circumferential wall of the sleeve assembly 01. The detachable connection can be achieved by coating the photocatalyst 03 on the inner circumferential wall of the sleeve assembly 01, and the plurality of photocatalysts 03 can be arranged at intervals.
[0025] The light-emitting assembly 02 can include a support part 21, a first light-emitting part 22, a waterproof pipe 23, and a second light-emitting part 25. The support part 21 can be detachably connected with the sleeve assembly 01, and the detachable connection can facilitate the disassembly and assembly of the support part 21 and the sleeve assembly 01. The waterproof pipe 23 can be detachably connected with the support part 21. The waterproof pipe 23 can be arranged in the hollow cavity of the sleeve assembly 01, and the waterproof pipe 23 can be arranged in a spaced manner with the sleeve assembly 01. The space between the outer circumferential wall of the waterproof pipe 23 and the inner circumferential wall of the sleeve assembly 01 can be used for the circulation of sewage. The first light-emitting part 22 can be used to emit ultraviolet rays. The waterproof pipe 23 can be made of transparent material. The first light-emitting part 22 can be detachably connected with the inner circumferential wall of the waterproof pipe 23, and the waterproof pipe 23 can isolate the first light-emitting part 22 from the sewage to prevent the first light-emitting part 22 from being short-circuited by contacting the sewage. The first light-emitting part 22 can emit ultraviolet rays towards the direction close to the inner circumferential wall of the sleeve assembly 01, so that the ultraviolet rays emitted by the first light-emitting part 22 react with the photocatalyst 03 on the inner circumferential wall of the sleeve assembly 01, thereby treating harmful substances in the sewage. The second light-emitting part 25 can be detachably connected with the sleeve assembly 01, and the second light-emitting part 25 can be used to emit ultraviolet rays. The sleeve assembly 01 can be made of transparent material. The second light-emitting part 25 can be arranged between the inner circumferential wall of the sleeve assembly 01 and the outer circumferential wall of the sleeve assembly 01, which can avoid damage to the second light-emitting part 25 caused by contact with the sewage without adding additional waterproof components. The second light-emitting part 25 can be arranged adjacent to the photocatalyst 03. Even if the ultraviolet rays emitted by the first light-emitting part 22 are weakened by the sewage, the ultraviolet rays emitted by the second light-emitting part 25 can fully react with the photocatalyst 03, thereby effectively treating harmful substances in the sewage. The detachable connection of the first light-emitting part 22 with the inner circumferential wall of the waterproof pipe 23 facilitates installation and has low manufacturing cost, but the ultraviolet rays emitted by the first light-emitting part 22 are easily weakened by the sewage. The detachable connection of the second light-emitting part 25 between the inner circumferential wall of the sleeve assembly 01 and the outer circumferential wall of the sleeve assembly 01 has high installation difficulty and high manufacturing cost, but the second light-emitting part 25 is short in distance from the photocatalyst 03 on the sleeve assembly 01, and there is no sewage between the second light-emitting part 25 and the photocatalyst 03 on the sleeve assembly 01. The ultraviolet rays emitted by the second light-emitting part 25 can fully react with the photocatalyst 03 to effectively treat the sewage. The combination of the first light-emitting part 22 and the second light-emitting part 25 can fully react the photocatalyst 03 with the ultraviolet rays to treat harmful substances in the sewage at a low cost.
[0026] The sewage treatment device can include a treatment state. The treatment state can include that the ultraviolet rays emitted by the first light-emitting part 22 and the ultraviolet rays emitted by the second light-emitting part 25 are irradiated toward the photocatalyst 03, the substances (the substances can be negative charges) generated by the reaction of the ultraviolet rays emitted by the first light-emitting part 22 and the ultraviolet rays emitted by the second light-emitting part 25 with the photocatalyst 03, respectively, in the space surrounded by the inner circumferential wall of the sleeve assembly and the outer circumferential wall of the waterproof pipe, at the same time, when the ultraviolet rays emitted by the first light-emitting part 22 and the ultraviolet rays emitted by the second light-emitting part 25 meet the photocatalyst 03, respectively, the ultraviolet rays and the photocatalyst 03 react with each other to generate strong oxidation-reduction efficiency, which is sufficient to effectively decompose organic pollutants such as formaldehyde, benzene, dimethylbenzene, dimethylformamide, chlorobenzene, etc. in sewage by breaking the molecular chain of organic matter.
[0027] In the embodiment, as shown in Figure 1 , Figure 2 , the sleeve assembly 01 can include a sleeve unit 11. The sleeve unit 11 can include a pipe wall 111 and at least one protruding part 112. One end of the protruding part 112 can be fixedly connected with the inner circumferential wall of the pipe wall 111, and the other end can extend away from the outer circumferential wall of the pipe wall 111. The fixed connection can make the strength of the sleeve unit 11 high. At least part of the photocatalyst 03 can be detachably connected with the inner circumferential wall of the pipe wall 111. At least part of the photocatalyst 03 can be detachably connected with the side of the protruding part 112 away from the outer circumferential wall of the pipe wall 111. The protruding part 112 can arrange as many photocatalysts 03 as possible without changing the axial size of the pipe wall 111, thereby increasing the contact area of the pollutants in the sewage with the photocatalyst 03, and also allowing the ultraviolet rays to react with more photocatalysts 03. In addition, the flow path of the sewage in the sleeve unit 11 is increased without increasing the axial size of the pipe wall 111, thereby improving the treatment efficiency of the sewage.
[0028] In the embodiment, as shown in Figure 1 , Figure 2 , the second light-emitting part 25 can be detachably connected with the protruding part 112. The protruding part 112 can be made of transparent material. When the second light-emitting part 25 is arranged in the space surrounded by the protruding part 112 and the pipe wall 111, the irradiation range of the ultraviolet rays emitted by the second light-emitting part 25 is wider, and the ultraviolet rays are irradiated to a larger area of the photocatalyst 03, thereby allowing the photocatalyst 03 to react with the ultraviolet rays more fully and more efficiently treating the harmful substances in the sewage.
[0029] In the embodiment, as shown in Figure 1 , Figure 2As shown, the sleeve assembly 01 can further include a first reflecting part 12. The first reflecting part 12 can be detachably connected with the outer peripheral wall of the sleeve unit 11. The first reflecting part 12 can be made of a metal material with high light reflectivity, such as aluminum, aluminum-magnesium alloy, silver, etc., and can reflect the ultraviolet light emitted by the first light emitting part 22 and the second light emitting part 25 to the photocatalyst 03, thereby improving the treatment efficiency of the sewage.
[0030] In the present embodiment, as shown in Figure 1 , Figure 2 At least part of the photocatalyst 03 can also be detachably connected with the outer peripheral wall of the waterproof pipe 23, and the outer peripheral wall of the waterproof pipe 23 can be fully utilized. In the case of a certain volume of the sleeve assembly 01, as many photocatalysts 03 as possible are arranged, so that the ultraviolet light from the first light emitting part 22 and the second light emitting part 25 can react with more photocatalysts 03, thereby improving the efficiency of treating sewage.
[0031] In the present embodiment, as shown in Figure 1 , Figure 2 The waterproof pipe 23 can include a waterproof housing 231 and at least one waterproof protrusion 232. The waterproof housing 231 can be detachably connected with the supporting part 21. One end of the waterproof protrusion 232 can be fixedly connected with the outer peripheral wall of the waterproof housing 231, and the other end can extend towards the sleeve assembly 01. The photocatalyst 03 can be detachably connected with the outer peripheral wall of the waterproof housing 231 and the side of the waterproof protrusion 232 close to the sleeve assembly 01, respectively. This arrangement can allow the waterproof protrusion 232 to arrange as many photocatalysts 03 as possible without changing the axial size of the pipe wall 111, thereby increasing the contact area between the pollutants and the photocatalyst 03, and allowing the ultraviolet light to react with more photocatalysts 03. In addition, the flow path of the sewage in the sleeve assembly 01 is increased without increasing the axial size of the pipe wall 111, thereby improving the treatment efficiency of the sewage.
[0032] In the present embodiment, as shown in Figure 1 , Figure 2 The first light emitting part 22 can be detachably connected with the waterproof protrusion 232, and the waterproof protrusion 232 can be made of transparent material. The first light emitting part 22 is arranged in the space surrounded by the waterproof protrusion 232, which can allow the ultraviolet light emitted by the first light emitting part 22 to irradiate a wider range and a larger area of the photocatalyst 03, thereby allowing the photocatalyst 03 to react more fully with the ultraviolet light and more efficiently treating the harmful substances in the sewage.
[0033] In the present embodiment, as shown in Figure 1 , Figure 2As shown, the light emitting assembly 02 can further include a second reflecting part 24. The second reflecting part 24 can be detachably connected with the inner circumferential wall of the waterproof pipe 23. The second reflecting part 24 can be arranged apart from the first light emitting part 22. The second reflecting part 24 can be made of a metal material with high light reflectivity, such as aluminum, aluminum-magnesium alloy, silver, etc. The ultraviolet light emitted by the first light emitting part 22 and the second light emitting part 25 can be reflected to the photocatalyst 03 through the transparent waterproof pipe 23, thereby improving the treatment efficiency of the sewage.
[0034] In the present embodiment, as shown in Figure 1 , Figure 2 The support part 21 can include a support body 211 and a flow-through hole 212. One end of the support body 211 can be detachably connected with the waterproof pipe 23, and the other end can be detachably connected with the sleeve assembly 01. The support body 211 can be used to fix the relative position of the sleeve assembly 01 and the waterproof pipe 23. The flow-through hole 212 can pass through both sides of the support body 211 along the axial direction of the sleeve assembly 01, allowing the sewage to flow smoothly when entering and leaving the sewage treatment device.
[0035] In the present embodiment, as shown in Figure 1 , Figure 2 The waterproof pipe 23 can be coaxially arranged with the sleeve assembly 01. The gap between the waterproof pipe 23 and the sleeve assembly 01 in the circumferential direction of the sleeve assembly 01 is consistent, so that the shortest distance between each first light emitting part 22 and the nearest photocatalyst 03 is the same, avoiding the situation that some harmful substances in the sewage are not completely treated.
[0036] Those skilled in the art can understand that the above embodiments are specific cases for implementing the present disclosure, and in actual application, various changes can be made in form and details without departing from the scope of the present disclosure.
Claims
1. A sewage treatment apparatus characterised in that, The sewage treatment device comprises: A plurality of photocatalysts; A sleeve assembly, the photocatalysts are detachably connected with the inner peripheral wall of the sleeve assembly; a plurality of the photocatalysts are arranged at intervals; A light-emitting assembly, the light-emitting assembly comprises a support part, a first light-emitting part, a waterproof pipe, and a second light-emitting part; the support part is detachably connected with the sleeve assembly; the waterproof pipe is detachably connected with the support part; the waterproof pipe is arranged in the hollow cavity of the sleeve assembly; the waterproof pipe is arranged at intervals with the sleeve assembly; the first light-emitting part is detachably connected with the inner peripheral wall of the waterproof pipe; the second light-emitting part is detachably connected with the sleeve assembly; the second light-emitting part is arranged between the inner peripheral wall of the sleeve assembly and the outer peripheral wall of the sleeve assembly; the second light-emitting part is arranged adjacent to the photocatalysts; The sewage treatment device comprises a treatment state; the treatment state comprises that the ultraviolet light emitted by the first light-emitting part and the ultraviolet light emitted by the second light-emitting part are irradiated towards the photocatalysts, and the substances generated by the reaction of the ultraviolet light emitted by the first light-emitting part and the ultraviolet light emitted by the second light-emitting part with the photocatalysts are respectively in the space enclosed by the inner peripheral wall of the sleeve assembly and the outer peripheral wall of the waterproof pipe.
2. The sewage treatment device according to claim 1, wherein The sleeve assembly comprises a sleeve unit; the sleeve unit comprises a pipe wall and at least one protruding part; one end of the protruding part is fixedly connected with the inner peripheral wall of the pipe wall, and the other end extends towards the direction close to the central axis of the pipe wall; at least part of the photocatalysts are detachably connected with the inner peripheral wall of the pipe wall; at least part of the photocatalysts are detachably connected with the side of the protruding part away from the outer peripheral wall of the pipe wall.
3. The sewage treatment device according to claim 2, wherein The second light-emitting part is detachably connected with the protruding part; the second light-emitting part is arranged in the space enclosed by the protruding part and the pipe wall.
4. The sewage treatment device according to claim 2, wherein The sleeve assembly further comprises a first reflecting part; the first reflecting part is detachably connected with the outer peripheral wall of the sleeve unit.
5. The sewage treatment device according to claim 1, wherein At least part of the photocatalysts are detachably connected with the outer peripheral wall of the waterproof pipe.
6. The sewage treatment device according to claim 1, wherein The waterproof pipe comprises a waterproof shell and at least one waterproof protruding part; the waterproof shell is detachably connected with the support part; one end of the waterproof protruding part is fixedly connected with the outer peripheral wall of the waterproof shell, and the other end extends towards the direction close to the sleeve assembly; the photocatalysts are respectively detachably connected with the outer peripheral wall of the waterproof shell and the side of the waterproof protruding part close to the sleeve assembly.
7. The sewage treatment device according to claim 6, wherein The first light-emitting part is detachably connected with the waterproof protruding part; the first light-emitting part is arranged in the space enclosed by the waterproof protruding part.
8. The sewage treatment device according to claim 1, wherein The light-emitting assembly further comprises a second reflecting part; the second reflecting part is detachably connected with the inner circumferential wall of the waterproof pipe; the second reflecting part is arranged in a spaced manner with the first light-emitting part.
9. The sewage treatment device according to claim 1, characterized in that, The supporting part comprises a supporting body and a flow-through hole; one end of the supporting body is detachably connected with the waterproof pipe, and the other end is detachably connected with the sleeve assembly; the flow-through hole penetrates through both sides of the supporting body along the axial direction of the sleeve assembly.
10. The sewage treatment device according to claim 1, characterized in that, The waterproof pipe and the sleeve assembly are coaxially arranged.