Closed box for electron beam irradiation of sewage treatment and sewage treatment system

Abstract

The application discloses a closed box for electron beam irradiation sewage treatment and a sewage treatment system. The box is divided into multiple regions in the length direction, including water inlet regions and water outlet regions on both sides and an irradiation region in the middle; the box is respectively provided with a water inlet and a water outlet corresponding to the water inlet region and the water outlet region; the bottom plate parts corresponding to the water inlet region and the water outlet region are lower in height than other regions. Through the stepped flow channel design, the sewage can slowly flow over the irradiation region after entering the box, the uniformity of the irradiation of the sewage is increased, the utilization efficiency of the irradiation electron beam is improved, the sewage only needs to be irradiated once, and the total amount of the sewage and the required irradiation dose can be measured.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of sewage irradiation treatment, and particularly relates to a closed box for electron beam irradiation sewage treatment and a sewage treatment system. BACKGROUND

[0002] The statements in this section merely provide background information related to the present application and do not necessarily constitute the prior art.

[0003] The existing water box structure of the electron beam irradiation sewage instrument is mostly in the form of an open stainless steel water box, and the beam directly irradiates the water body. However, there are problems that cannot be implemented under special working conditions, such as the toxicity of the water body or the lack of conditions in the working place. In addition, the uniformity of the irradiated water body cannot be guaranteed, and thus the received irradiation dose of the sewage water body is not accurate. If a closed flow channel is made for irradiation, the pressure is equal everywhere in the pipe under the condition of the pressure equation, and the flow and dose can be well calculated and counted. However, the beam loss of the electron beam irradiating the water body entering the irradiation area through the conventional pipe wall is still large, and the problem of difficulty in counting the received dose of the sewage water body cannot be solved. SUMMARY

[0004] In order to overcome the deficiencies of the prior art, the present application provides a closed box for electron beam irradiation sewage treatment and a sewage treatment system.

[0005] To achieve the above object, one or more embodiments of the present application provide the following technical solutions:

[0006] A closed box for electron beam irradiation sewage treatment, the box is divided into multiple regions in the length direction, including water inlet regions and water outlet regions on both sides, and an irradiation region in the middle; the box is respectively provided with a water inlet and a water outlet corresponding to the water inlet region and the water outlet region; the upper surface of the bottom plate of the box is high in the middle and low on both sides, in a stepped form. The height of the bottom plate part corresponding to the water inlet region and the water outlet region is lower than that of other regions, and through the stepped flow channel, the sewage can slowly flow over the irradiation region after entering the box, increasing the uniformity of the irradiated sewage and improving the utilization efficiency of the irradiation electron beam. The sewage only needs to be irradiated once, which is helpful for measuring the total amount of the sewage.

[0007] In some embodiments, the space thickness of the irradiation region in the box is 0.5-5 cm. By designing a specific thickness of the space thickness of the irradiation region, it is helpful to fully discharge the air in the box when the sewage flows over the irradiation region flow channel, improving the irradiation effect.

[0008] In some embodiments, a plurality of flow guides are evenly arranged on the bottom plate of the box body along the direction from the water inlet to the water outlet. The sewage is divided by the plurality of flow guides, which further increases the uniformity of the sewage irradiation and is beneficial to improve the irradiation effect.

[0009] In some embodiments, the top cover is provided with an opening at the position corresponding to the irradiation area, and the opening is provided with an aluminum foil film or an acrylic observation plate. The arrangement of the aluminum foil film / acrylic observation plate greatly improves the use efficiency of the beam irradiation and reduces the energy loss.

[0010] In some embodiments, the top cover comprises a pressing plate and an aluminum foil film or a pressing plate and an acrylic observation plate; the pressing plate and the aluminum foil film / acrylic observation plate are the same size, the pressing plate is provided with an opening at the middle part corresponding to the position of the irradiation area, and the pressing plate and the aluminum foil film / acrylic observation plate are tightly attached and connected to the upper surface of the side wall through a plurality of bolts. The aluminum foil film / acrylic observation plate is tightly pressed by the pressing plate and is packaged on the box body through a plurality of bolts, which ensures the sealing performance of the box body.

[0011] In some embodiments, the connection between the top cover and the upper surface of the side wall is sealed by a sealing ring towards the side of the box body. The sealing ring is deformed under the tightening force of the bolt, which improves the sealing performance of the water box to the water body.

[0012] In some embodiments, the water inlet and the water outlet are arranged on the top cover of the box body and are connected to the water inlet pipe and the water outlet pipe respectively. The water inlet pipe and the water outlet pipe each comprise a pipe body, the bottom side wall of the pipe body is provided with an extension part and is attached to the lower surface of the top cover, and the outer surface of the pipe body is provided with threads at a certain distance from the bottom upwards. The connection between the water inlet pipe / water outlet pipe and the top cover of the box body is realized by one or more nuts cooperating with the threads. The water inlet pipe and the water outlet pipe are connected to the top cover in the above manner, which ensures the sealing performance of the box body.

[0013] In some embodiments, the inner surface of the bottom plate corresponding to the irradiation area is provided with a bottom protection plate, and / or the outer surface of the side wall of the box body is provided with a side protection plate at the position corresponding to the irradiation area. The arrangement of the above-mentioned bottom protection plate and side protection plate increases the irradiation dose of the sewage and blocks part of the scattering of the electron beam, which improves the utilization efficiency of the electron beam.

[0014] In some embodiments, the box body is in the shape of a rectangle, a rhombus, a semicircle or a trapezoid in a top view.

[0015] One or more embodiments of the present application provide a sewage treatment system comprising the box body.

[0016] In one or more embodiments above, the uniformity of sewage irradiation is increased by the water-wading flow channel; the transmittance of electron beam is increased by the aluminum foil film / acrylic plate; the scattering is reduced and the beam current loss of electron beam is reduced by the design of sealing structure and protection structure, thereby greatly improving the utilization efficiency of electron beam, so that the sewage only needs to be irradiated once to meet the demand, without the need for secondary irradiation, thereby quantifying the relationship between the total amount of sewage and the required irradiation dose. BRIEF DESCRIPTION OF DRAWINGS

[0017] The accompanying drawings, which form a part of this specification, are included to provide a further understanding of the application and are incorporated by reference herein. The embodiments depicted herein are provided by way of example only, and together with the specification serve to explain the application.

[0018] Figure 1 is a top view of a closed box for electron beam irradiation of sewage treatment in one or more embodiments of the present application;

[0019] Figure 2 is a sectional view of a closed box for electron beam irradiation of sewage treatment in one or more embodiments of the present application;

[0020] Figure 3 is a side view of a closed box for electron beam irradiation of sewage treatment in one or more embodiments of the present application;

[0021] Figure 4 is a partial enlarged view of the connection between the top cover and the side wall in one or more embodiments of the present application.

[0022] In the drawings, 1 is a box, 2 is a bottom protection plate, 3 is a side protection plate, 4 is a bottom plate, 5 is an aluminum foil film, 6 is a pressing plate, 7 is a bottom plate, 8 is a water inlet pipe, 9 is a water outlet pipe, 10 is a pipe body, 11 is an extension, 12 is a nut, 13 is a sealing gasket, and 14 is a sealing ring. DETAILED DESCRIPTION

[0023] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0024] It is to be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments in accordance with the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising," when used in this specification, specify the presence of stated features, steps, operations, elements, and / or components, but do not preclude the presence or addition of one or more other features, steps, operations, elements, components, and / or groups thereof.

[0025] In the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other.

[0026] The embodiment of the present application provides a closed box 1 for electron beam irradiation sewage treatment, the box 1 includes a bottom plate, a side wall and a top cover. The box 1 is divided into multiple regions in the length direction, including water inlet regions and water outlet regions on both sides, and an irradiation region in the middle. The box 1 is provided with an irradiation device above the irradiation region outside. The top cover of the box 1 is provided with a water inlet and a water outlet at positions corresponding to the water inlet region and the water outlet region respectively, for inflow of sewage to be treated and outflow of treated sewage respectively. After the sewage to be treated enters the box 1 through the water inlet, it flows through the irradiation region and is finally discharged from the water outlet.

[0027] In one or more embodiments, the bottom plate 7 is provided with recessed regions at positions corresponding to the water inlet region and the water outlet region, so that the middle part of the bottom plate 7 is high and the two sides are low, forming a stepped flow channel, so that the water depth below the water inlet and the water outlet is greater than that of the irradiation region. After the sewage flows into the water inlet pipe, it first fills the recessed region, and as the water volume increases, it overflows the irradiation region. Through the design of the water-overflowing type, the air in the box 1 can be fully discharged, and the uniformity of the sewage irradiation is increased. Those skilled in the art can understand that the size of the irradiation region can be the same as the high and convex middle region on the bottom plate, or can be smaller than the middle region, and located in the middle of the middle region.

[0028] The thickness of the space corresponding to the irradiation region in the box 1 is 0.5-5cm. Those skilled in the art can understand that the thickness can be adjusted by laying lead plates or steel plates at the bottom of the flow channel.

[0029] As an optional implementation, a plurality of flow guides are uniformly arranged on the bottom plate 7 of the box in the direction from the water inlet to the water outlet, for guiding the water flow direction, so that the water body can flow more uniformly through the irradiation region.

[0030] In one or more embodiments, the bottom plate 7 and the side wall are integrally formed, and the upper surface of the side wall is sealingly connected with the top cover. The inner surface of the bottom plate 7 is provided with a bottom protection plate 2 at a position corresponding to the irradiation region, and the outer surface of the side wall is provided with a side protection plate 3 at a position corresponding to the irradiation region.

[0031] In one or more embodiments, the box 1 is provided with a water inlet and a water outlet on each side, respectively provided with a water inlet pipe 8 and a water outlet pipe 9. The water inlet pipe 8 and the water outlet pipe 9 each include a pipe body 10, the bottom side wall of the pipe body 10 is provided with an extension 11, the outer surface of the pipe body 10 is provided with threads at a certain distance from the bottom, the pipe body extends upward from the water inlet / outlet, the extension 11 is attached to the lower surface of the top cover, and the water inlet pipe / water outlet pipe is connected to the top cover of the box through one or more nuts 12 cooperating with the threads. A sealing gasket 13 is provided between the nut 12 and the pipe body 10.

[0032] The upper part of the pipe body 10 of the water inlet pipe / water outlet pipe is provided with a connecting part for connecting with the water inlet / outlet pipe, which in this embodiment is a butt joint.

[0033] In one or more embodiments, the upper surface of the side wall is connected to the top cover through a bolt, and a sealing ring is sleeved on the bolt. To further enhance the sealing performance, the bolt penetrates the side wall and the top cover and is fastened by a nut above the top cover.

[0034] The middle part of the top cover is provided with an opening corresponding to the irradiation area, and the opening is provided with an aluminum foil film or an acrylic observation plate. Thus, when the beam irradiates, the electron beam can pass through a thin aluminum foil or an acrylic observation plate better, improving the use efficiency and greatly reducing the energy loss.

[0035] As a specific implementation, the top cover includes a pressing plate and an aluminum foil film, the pressing plate and the aluminum foil film are the same size, the middle part of the pressing plate is provided with an opening corresponding to the irradiation area, and the pressing plate and the aluminum foil film are tightly attached and connected to the upper surface of the side wall through a plurality of bolts. By the pressing plate and the bolt fixing mode, the aluminum foil film can be pressed tightly and fully flattened, which seals the water body and forms a very thin metal film in the beam area. Those skilled in the art can understand that two pressing plates with openings in the middle part can also be used to clamp the aluminum foil film, and the aluminum foil film is tightly attached and connected to the upper surface of the side wall through a plurality of bolts.

[0036] As another specific implementation, the top cover includes a pressing plate and an acrylic observation plate, the pressing plate and the acrylic observation plate are the same size, the middle part of the pressing plate is provided with an opening corresponding to the irradiation area, and the pressing plate and the acrylic observation plate are tightly attached and connected to the upper surface of the side wall through a plurality of bolts. By the pressing plate and the bolt fixing mode, the acrylic observation plate can be pressed tightly and fully flattened. Those skilled in the art can understand that two pressing plates with openings in the middle part can also be used to clamp the acrylic observation plate, and the acrylic observation plate is tightly attached and connected to the upper surface of the side wall through a plurality of bolts. Preferably, the pressing plate is a steel plate.

[0037] In order to make the water box more airtight, and at the same time improve the corrosion resistance of the sewage, the connection between the top cover and the upper surface of the side wall is sealed by a sealing ring 14 towards the inside of the box body. Specifically, the sealing ring adopts a double-layer lead wire sealing ring or a tin gasket. The lead wire deforms under the tightening force of the bolt, thereby improving the sealing performance of the water box to the water body.

[0038] In one or more embodiments, the side guard plate is made of stainless steel plate and is connected to the side wall by bolts.

[0039] In one or more embodiments, the bottom guard plate is a graphite plate, which is embedded to make the height of the bottom guard plate consistent with the height of the raised area in the middle of the bottom plate. After the electron beam passes through the sewage and reaches the graphite bottom guard plate, it will be reflected, increasing the irradiation dose of the sewage and blocking part of the scattering of the electron beam, thereby improving the utilization efficiency of the electron beam and greatly reducing the design difficulty of the external shielding body. In addition, due to the small overall size of the box body, the economic efficiency of the external shielding design is also improved.

[0040] Through the above top cover structure of the water box, the passing rate of the electron beam is improved. Through the design of the above sealing structure and protection structure, the irradiation dose of the sewage absorption is greatly improved, and the radiation protection of the water box is improved, thereby helping to accurately count the irradiation dose.

[0041] In addition, by improving the flow channel of the water box, the air in the water box can be fully discharged while controlling the water flow rate, thereby realizing accurate counting of the total amount of irradiated sewage.

[0042] Based on the improvement of the passing rate and utilization rate of the irradiation electron beam, and the control of the flow rate of the irradiated sewage, the sewage only needs to be irradiated once to meet the demand, without the need for secondary irradiation, thereby quantifying the relationship between the total amount of sewage and the required irradiation dose, which has reference significance for the design of large-flow sewage irradiation treatment equipment.

[0043] In one or more embodiments, the box body has a rectangular overall view, and the water inlet and the water outlet are respectively arranged near two short sides of the rectangle.

[0044] In one or more embodiments, the box body has a rhombus overall view, and the water inlet and the water outlet are respectively arranged in the area enclosed by two acute angles. Compared with the rectangular arrangement, the two acute angle areas of the rhombus can converge the water flow, and the uniformity of the water flow is better.

[0045] Of course, the overall shape of the box body in the top view can also be other shapes, such as semicircular, trapezoidal, etc.

[0046] The assembling method of the box body is as follows: firstly, the pressing plate and the threaded joint of the aluminum foil film are fixedly connected through the nut, then the threaded joint and the sealing ring are fixedly connected through the nut to form an upper cover plate as a whole, and the water inlet pipe and the water outlet pipe are arranged on the upper cover plate; the bottom protection plate is placed in the box body, the side protection plate and the side wall of the box body are connected through the screw; finally, the upper cover body and the box body are connected and assembled through the screw nut.

[0047] Based on the box body, one or more embodiments of the present application further provide a sewage treatment system comprising the box body. Those skilled in the art can understand that the water inlet of the box body is connected to one end of the sewage to be treated, and the water outlet can be connected to a water tank. Of course, according to the needs of the post-treatment of a specific sewage type, other treatment equipment can also be connected.

[0048] The box body can be applied to any scene using irradiation treatment, such as printing and dyeing wastewater treatment, medical wastewater treatment, chemical wastewater treatment, coal chemical wastewater treatment, etc., which are not limited here.

[0049] Although the specific embodiments of the present application are described above in combination with the drawings, it is not a limitation on the protection scope of the present application. Those skilled in the art should understand that various modifications or changes made by those skilled in the art on the basis of the technical solutions of the present application without creative labor are still within the protection scope of the present application.

Claims

1. A closed box for treating wastewater by electron beam irradiation, characterized in that, The box is divided into multiple regions along its length, including water inlet and outlet regions on both sides, and an irradiation region in the middle. The bottom plate portion corresponding to the irradiation area is provided with a bottom protective plate on its inner surface, and / or, the outer surface of the box sidewall is provided with a side protective plate at the position corresponding to the irradiation area. The box body is provided with an inlet and an outlet corresponding to the water inlet area and the water outlet area, respectively. The upper surface of the box base plate is high in the middle and low on both sides, forming a stepped shape; On the bottom plate of the box, multiple guide plates are evenly arranged along the direction from water inlet to water outlet; The top cover portion corresponding to the irradiation area is provided with an aluminum foil film or an acrylic observation plate.

2. The enclosed housing for electron beam irradiation wastewater treatment as described in claim 1, characterized in that, The thickness of the space corresponding to the irradiated area inside the box is 0.5-5cm.

3. The enclosed housing for electron beam irradiation wastewater treatment as described in claim 1, characterized in that, The top cover includes a pressure plate and an aluminum foil film, or a pressure plate and an acrylic observation plate; the pressure plate and the aluminum foil film / acrylic observation plate are the same size, and an opening is provided in the middle of the pressure plate corresponding to the irradiation area. The pressure plate and the aluminum foil film / acrylic observation plate are tightly fitted together and connected to the upper surface of the side wall by multiple bolts.

4. The enclosed housing for electron beam irradiation wastewater treatment as described in claim 3, characterized in that, The connection between the top cover and the upper surface of the side wall is sealed with a sealing ring on the side facing the inside of the box.

5. The enclosed housing for electron beam irradiation wastewater treatment as described in claim 1, characterized in that, The water inlet and outlet are both located on the top cover of the box, and are respectively connected to the water inlet pipe and the water outlet pipe. The water inlet pipe and the water outlet pipe both include a pipe body. The bottom side wall of the pipe body has an extension that fits against the lower surface of the top cover. The outer surface of the pipe body is threaded from bottom to top at a certain distance. The water inlet pipe / water outlet pipe is connected to the top cover of the box by one or more nuts engaging with the threads.

6. The enclosed housing for electron beam irradiation wastewater treatment as described in claim 1, characterized in that, The box's top view is generally rectangular, rhomboid, semi-circular, or trapezoidal.

7. A wastewater treatment system, characterized in that, Including the enclosed box for electron beam irradiation wastewater treatment as described in any one of claims 1-6.

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