Ultraviolet disinfection system for dynamic overflow of sewage

Abstract

The utility model provides a sewage dynamic overflow ultraviolet disinfection system. The sewage dynamic overflow ultraviolet disinfection system comprises an inlet water sedimentation tank, a sewage overflow weir, an outlet water sedimentation tank, an ultraviolet disinfection module, an inlet weir gate assembly, a weir side wall and a liquid level detector which are arranged in sequence, the bottom of the sewage overflow weir is respectively higher than the bottom of the water inlet sedimentation tank and the bottom of the water outlet sedimentation tank; the ultraviolet disinfection module is arranged in the sewage overflow weir and is positioned on a flowing path of sewage; the weir edge enclosing wall is arranged between the sewage overflow weir and the water outlet sedimentation tank in a blocking manner, and the bottom of the sewage overflow weir is communicated with the water outlet sedimentation tank, so that sewage in the sewage overflow weir synchronously flows towards the bottom and enters the water outlet sedimentation tank. Therefore, the sewage in the sewage overflow weir flows from the bottom layer to the water outlet sedimentation tank, so that the sewage on the surface layer and the bottom layer of the sewage overflow weir can continuously flow to the water outlet sedimentation tank, and finally, the purity of the sewage entering the water outlet sedimentation tank is improved.

Description

TECHNICAL FIELD

[0001] The present disclosure relates to the technical field of sewage treatment, and particularly relates to a sewage dynamic overflow ultraviolet disinfection system. BACKGROUND

[0002] In order to improve the utilization rate of sewage, it is usually necessary to recycle the sewage. Generally, sewage usually contains pathogenic microorganisms such as salmonella and norovirus, so the sewage usually needs to be sterilized and disinfected before reuse to prevent the spread of diseases.

[0003] For example, Chinese patent document CN204369705U discloses a sewage ultraviolet disinfection and purification system. The left end of the disinfection tank is provided with a static tank, the middle end of the disinfection tank is provided with a disinfection overflow tank, the right end of the disinfection tank is provided with an adsorption water outlet tank, the left end of the static tank is provided with a water inlet pipe connected with the static tank, an overflow plate is arranged between the static tank and the disinfection overflow tank, an ultraviolet module is arranged in the disinfection overflow tank, uniformly distributed overflow pipes are arranged at the right end of the disinfection overflow tank, a water outlet pipe is arranged at the right end of the adsorption water outlet tank, an adsorption inclined layer is arranged in the adsorption water outlet tank, the adsorption inclined layer is located at the outlet of the water outlet pipe, an electric control room for controlling the ultraviolet module is arranged at the upper part of the disinfection tank, and a stirrer is arranged in the adsorption water outlet tank.

[0004] However, the design of the above-mentioned sewage ultraviolet disinfection and purification system has the following problems:

[0005] The above-mentioned sewage ultraviolet disinfection and purification system can disinfect the sewage through the ultraviolet module, but due to the structural design, the sewage located on the surface continuously flows through the overflow plate and the overflow pipe to the subsequent process, that is, the sewage located on the surface continuously flows, which makes it difficult for the ultraviolet module to fully disinfect and kill the sewage located on the surface, and ultimately affects the cleanliness of the sewage entering the adsorption water outlet tank. CONTENT OF THE UTILITY MODEL

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art and provide a sewage dynamic overflow ultraviolet disinfection system capable of more uniform disinfection and killing of sewage.

[0007] The purpose of the present disclosure is achieved by the following technical solutions:

[0008] A sewage dynamic overflow ultraviolet disinfection system, comprising a water inlet sedimentation tank, a sewage overflow weir and a water outlet sedimentation tank arranged in sequence; the water inlet sedimentation tank is used for connecting a sewage inlet pipe, and the water outlet sedimentation tank is used for connecting a sewage outlet pipe; the bottom of the sewage overflow weir is higher than the bottom of the water inlet sedimentation tank and the bottom of the water outlet sedimentation tank, respectively, and the sewage overflow weir is used for sewage flow;

[0009] The sewage dynamic overflow ultraviolet disinfection system further comprises an ultraviolet disinfection module, an inlet weir gate assembly, a weir edge fence and a liquid level detector.

[0010] The ultraviolet disinfection module is installed in the sewage overflow weir and located on the flow path of the sewage. The ultraviolet disinfection module is used for disinfecting the sewage. The weir edge fence is arranged between the sewage overflow weir and the outlet sedimentation tank. The bottom of the sewage overflow weir is communicated with the outlet sedimentation tank. The liquid level detector is installed on the weir edge fence and used for detecting the liquid level value in the sewage overflow weir. An opening and closing area is formed between the inlet sedimentation tank and the sewage overflow weir. The inlet weir gate assembly is installed in the opening and closing area and electrically connected to the liquid level detector. The inlet weir gate assembly is used for opening or closing the opening and closing area according to the liquid level value, so that the inlet sedimentation tank and the sewage overflow weir are communicated or separated.

[0011] In some embodiments, the sewage dynamic overflow ultraviolet disinfection system further comprises a flow guide pipe group arranged below the sewage overflow weir. The inlet of the flow guide pipe group is communicated with the bottom of the sewage overflow weir, and the outlet of the flow guide pipe group is communicated with the outlet sedimentation tank.

[0012] In some embodiments, the flow guide pipe group comprises an outlet total pipe and at least two inlet branch pipes. The first end of each inlet branch pipe is communicated with the bottom of the sewage overflow weir, and the second end of each inlet branch pipe is respectively communicated with the first end of the outlet total pipe. The second end of the outlet total pipe is communicated with the outlet sedimentation tank.

[0013] In some embodiments, the first end of each inlet branch pipe is distributed at intervals on the bottom of the sewage overflow weir, and the second end of each inlet branch pipe is arranged at intervals along the length direction of the outlet total pipe.

[0014] In some embodiments, the bottom of the sewage overflow weir is provided with a desilting screen. The first end of the inlet branch pipe is arranged opposite to the desilting screen and communicated with the sewage overflow weir through the mesh hole of the desilting screen.

[0015] In some embodiments, the first end of each inlet branch pipe is located between the ultraviolet disinfection module and the weir edge fence.

[0016] In some embodiments, the outlet of the sewage outlet pipe is higher than the inlet of the outlet total pipe. The outlet sedimentation tank is further provided with a separation screen. The outlet of the outlet total pipe is communicated with the inlet of the sewage outlet pipe through the screen hole of the separation screen.

[0017] In some embodiments, the ultraviolet disinfection module includes a controller and at least two ultraviolet lamp sterilizers, the at least two ultraviolet lamp sterilizers being arranged sequentially along the flow path of the sewage; the controller is installed outside the sewage overflow weir and electrically connected to each of the two ultraviolet lamp sterilizers.

[0018] In some embodiments, a first sludge discharge port is provided at the bottom of the inlet sedimentation tank, and the bottom wall of the inlet sedimentation tank gradually slopes towards the first sludge discharge port along the direction of gravity; and / or,

[0019] A second sludge discharge outlet is provided at the bottom of the effluent sedimentation tank, and the bottom wall of the effluent sedimentation tank gradually slopes towards the second sludge discharge outlet along the direction of gravity.

[0020] In some embodiments, the inlet gate assembly includes a valve frame, a valve plate, and a rotary actuator; the valve frame is fixedly installed in the opening and closing area, the inlet sedimentation tank is connected to the sewage overflow weir through the valve frame, the valve plate is rotatably disposed within the valve frame, and the rotary actuator is installed on the valve frame; the power output end of the rotary actuator is fixedly connected to the valve plate to drive the valve plate to open or close the opening and closing area.

[0021] Compared with the prior art, this disclosure has at least the following advantages:

[0022] 1) Since the inlet sedimentation tank is connected to the sewage inlet pipe, the bottom of the sewage overflow weir is higher than the bottom of the inlet sedimentation tank. The inlet gate assembly is installed in the opening and closing area between the inlet sedimentation tank and the sewage overflow weir. After the sewage enters the inlet sedimentation tank through the sewage inlet pipe, the silt in the sewage will settle to the bottom of the inlet sedimentation tank under the action of gravity. This allows the sewage on the surface of the inlet sedimentation tank to enter the sewage overflow weir after the inlet gate assembly opens the opening and closing area. The sewage entering the sewage overflow weir can be dynamically controlled by the inlet gate assembly.

[0023] 2) Because the weir wall is installed between the sewage overflow weir and the effluent settling tank, it prevents direct sewage flow between the two areas. This allows a liquid level to form within the sewage overflow weir after the inlet gate assembly closes, enabling the UV disinfection module installed within the weir to disinfect the sewage. The bottom of the sewage overflow weir connects to the effluent settling tank, meaning the sewage in the overflow weir flows synchronously towards the bottom and into the settling tank. This continuous flow of sewage from the surface and bottom layers of the overflow weir into the settling tank ultimately improves the purity of the sewage entering the settling tank.

[0024] 3) Since the liquid level detector is installed on the weir side wall, the liquid level of the sewage in the sewage overflow weir can be detected in real time through the liquid level detector, and by electrically connecting the liquid level detector to the inlet weir gate assembly, the inlet weir gate assembly can obtain the liquid level value of the sewage in the sewage overflow weir measured by the liquid level detector, and when the liquid level value is too low, the inlet weir gate assembly can open the opening and closing area in time, thereby keeping the sewage liquid level in the sewage overflow weir within a predetermined range, to ensure the effective use of the ultraviolet disinfection module. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present disclosure, and therefore should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can also be obtained without creative labor on the basis of these drawings.

[0026] Figure 1 Structure diagram of the sewage dynamic overflow ultraviolet disinfection system of an embodiment of the present disclosure;

[0027] Figure 2 Structure diagram of the sewage dynamic overflow ultraviolet disinfection system of an embodiment of the present disclosure; Figure 1 Enlarged view of part A in FIG.

[0028] Figure 3 Enlarged view of part B in FIG. Figure 1 Enlarged view of part B in FIG.

[0029] Reference signs:

[0030] 100, inlet water sedimentation tank; 110, sewage inlet pipe; 101, opening and closing area; 102, first sludge discharge port;

[0031] 200, sewage overflow weir; 210, flow guide pipe group; 2110, liquid outlet main pipe; 2120, liquid inlet branch pipe; 220, sludge screening net;

[0032] 300, outlet water sedimentation tank; 310, sewage outlet pipe; 320, separation screen; 301, second sludge discharge port;

[0033] 400, ultraviolet disinfection module; 410, controller; 420, ultraviolet lamp sterilizer;

[0034] 500, inlet weir gate assembly; 510, valve frame; 520, valve plate; 530, rotary driver;

[0035] 600, weir side wall;

[0036] 700, liquid level detector. DETAILED DESCRIPTION

[0037] For the purpose of clarity, the present disclosure will be described with reference to the accompanying drawings. The preferred embodiments of the present disclosure are illustrated in the drawings. However, the present disclosure can be implemented in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and fully convey the scope of the present disclosure to those skilled in the art.

[0038] It is noted that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. The terms "vertical", "horizontal", "left", "right", and the like as used herein are used for illustration only and are not intended to limit the present disclosure.

[0039] 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 disclosure belongs. The terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0040] In order to better understand the technical solutions and beneficial effects of the present disclosure, the present disclosure will be further described in detail below in conjunction with specific embodiments:

[0041] Please refer to Figure 1The sewage dynamic overflow ultraviolet disinfection system of one embodiment comprises, in sequence, a water inlet sedimentation tank 100, a sewage overflow weir 200, a water outlet sedimentation tank 300, an ultraviolet disinfection module 400, an inlet weir gate assembly 500, a weir side wall 600, and a liquid level detector 700. The water inlet sedimentation tank 100 is configured to be connected to a sewage inlet pipe 110, and the water outlet sedimentation tank 300 is configured to be connected to a sewage outlet pipe 310. The bottom of the sewage overflow weir 200 is higher than the bottom of the water inlet sedimentation tank 100 and the bottom of the water outlet sedimentation tank 300, and the sewage overflow weir 200 is configured to allow sewage to flow therethrough. The ultraviolet disinfection module 400 is installed in the sewage overflow weir 200 and located on the flow path of the sewage. The ultraviolet disinfection module 400 is configured to disinfect the sewage. The weir side wall 600 is arranged between the sewage overflow weir 200 and the water outlet sedimentation tank 300, and the bottom of the sewage overflow weir 200 is connected to the water outlet sedimentation tank 300. The liquid level detector 700 is installed on the weir side wall 600 and configured to detect the liquid level in the sewage overflow weir 200. An opening and closing area 101 is formed between the water inlet sedimentation tank 100 and the sewage overflow weir 200. The inlet weir gate assembly 500 is installed in the opening and closing area 101 and electrically connected to the liquid level detector 700. The inlet weir gate assembly 500 is configured to open or close the opening and closing area 101 according to the liquid level, so as to connect or separate the water inlet sedimentation tank 100 and the sewage overflow weir 200.

[0042] It can be understood that, since the water inlet sedimentation tank 100 is connected to the sewage inlet pipe 110, the bottom of the sewage overflow weir 200 is higher than the bottom of the water inlet sedimentation tank 100, and the inlet weir gate assembly 500 is installed in the opening and closing area 101 between the water inlet sedimentation tank 100 and the sewage overflow weir 200, after the sewage enters the water inlet sedimentation tank 100 through the sewage inlet pipe 110, the sediment in the sewage will settle to the bottom of the water inlet sedimentation tank 100 under the action of gravity, so that the sewage on the surface of the water inlet sedimentation tank 100 can enter the sewage overflow weir 200 after the inlet weir gate assembly 500 opens the opening and closing area 101, so as to dynamically control the sewage entering the sewage overflow weir 200 through the inlet weir gate assembly 500. The flow direction of the sewage is through the water inlet sedimentation tank 100, the sewage overflow weir 200, and the water outlet sedimentation tank 300 in sequence, for example, the sewage is pumped into the sewage inlet pipe 110.

[0043] It can be understood that, due to the weir side wall 600 blocking the sewage overflow weir 200 and the effluent sedimentation tank 300, the sewage overflow weir 200 and the effluent sedimentation tank 300 can be directly blocked by the weir side wall 600, so that the liquid level height can be formed in the sewage overflow weir 200 after the inlet weir gate assembly 500 closes the opening and closing area 101, and the ultraviolet disinfection module 400 installed in the sewage overflow weir 200 can disinfect the sewage in the sewage overflow weir 200, and the bottom of the sewage overflow weir 200 is connected to the effluent sedimentation tank 300, that is, the sewage in the sewage overflow weir 200 will flow into the effluent sedimentation tank 300 synchronously. In this way, the sewage in the sewage overflow weir 200 will flow from the bottom to the effluent sedimentation tank 300, so that the sewage on the surface and the bottom of the sewage overflow weir 200 can continuously flow into the effluent sedimentation tank 300, and finally the purity of the sewage in the effluent sedimentation tank 300 is improved.

[0044] It can be understood that, due to the weir side wall 600 blocking the sewage overflow weir 200 and the effluent sedimentation tank 300, the sewage overflow weir 200 and the effluent sedimentation tank 300 can be directly blocked by the weir side wall 600, so that the liquid level height can be formed in the sewage overflow weir 200 after the inlet weir gate assembly 500 closes the opening and closing area 101, and the ultraviolet disinfection module 400 installed in the sewage overflow weir 200 can disinfect the sewage in the sewage overflow weir 200, and the bottom of the sewage overflow weir 200 is connected to the effluent sedimentation tank 300, that is, the sewage in the sewage overflow weir 200 will flow into the effluent sedimentation tank 300 synchronously. In this way, the sewage in the sewage overflow weir 200 will flow from the bottom to the effluent sedimentation tank 300, so that the sewage on the surface and the bottom of the sewage overflow weir 200 can continuously flow into the effluent sedimentation tank 300, and finally the purity of the sewage in the effluent sedimentation tank 300 is improved.

[0045] In one embodiment, the inlet weir gate assembly 500 can be a conventional electric channel valve, and the liquid level detector 700 can be a conventional automatic water level controller, so this part will not be repeated. It should be particularly pointed out that the method of opening or closing the opening and closing area by the inlet weir gate assembly 500 according to the liquid level value belongs to the prior art, so this part will not be repeated, and is not within the protection scope of the present disclosure.

[0046] Please refer to Figure 1In some embodiments, the sewage dynamic overflow ultraviolet disinfection system further comprises a flow guide pipe group 210, which is arranged below the sewage overflow weir 200, the water inlet end of the flow guide pipe group 210 is communicated with the bottom of the sewage overflow weir 200, and the water outlet end of the flow guide pipe group 210 is communicated with the water outlet sedimentation tank 300. It can be understood that, since the flow guide pipe group 210 is arranged below the sewage overflow weir 200, the water inlet end of the flow guide pipe group 210 is communicated with the bottom of the sewage overflow weir 200, and the water outlet end of the flow guide pipe group 210 is communicated with the water outlet sedimentation tank 300, so that the sewage in the sewage overflow weir 200 can flow into the water outlet sedimentation tank 300 from the bottom through the flow guide pipe group 210, and then the sewage on the surface and the bottom of the sewage overflow weir 200 can continuously flow into the water outlet sedimentation tank 300, thereby improving the purity of the sewage in the water outlet sedimentation tank 300.

[0047] Referring to Figure 1 In some embodiments, the flow guide pipe group 210 comprises a liquid outlet main pipe 2110 and at least two liquid inlet branch pipes 2120, the first end of each liquid inlet branch pipe 2120 is communicated with the bottom of the sewage overflow weir 200, and the second end of each liquid inlet branch pipe 2120 is respectively communicated with the first end of the liquid outlet main pipe 2110, and the second end of the liquid outlet main pipe 2110 is communicated with the water outlet sedimentation tank 300. It can be understood that, by communicating the first end of each liquid inlet branch pipe 2120 with the bottom of the sewage overflow weir 200, the sewage in the sewage overflow weir 200 can flow out through each liquid inlet branch pipe 2120, and by respectively communicating the second end of each liquid inlet branch pipe 2120 with the first end of the liquid outlet main pipe 2110 and communicating the second end of the liquid outlet main pipe 2110 with the water outlet sedimentation tank 300, the sewage in each liquid inlet branch pipe 2120 can flow into the water outlet sedimentation tank 300 through the liquid outlet main pipe 2110.

[0048] Referring to Figure 1 In some embodiments, the first end of each liquid inlet branch pipe 2120 is distributed at intervals on the bottom of the sewage overflow weir 200, and the second end of each liquid inlet branch pipe 2120 is arranged at intervals along the length direction of the liquid outlet main pipe 2110. It can be understood that, since the second end of each liquid inlet branch pipe 2120 is arranged at intervals along the length direction of the liquid outlet main pipe 2110, a compact connection structure can be formed between the liquid inlet branch pipe 2120 and the liquid outlet main pipe 2110, thereby facilitating the arrangement of the flow guide pipe group 210. Specifically, each liquid inlet branch pipe 2120 is perpendicular to the liquid outlet main pipe 2110.

[0049] Referring to Figure 2In some embodiments, the sewage overflow weir 200 is provided with a screen 220 at the bottom thereof; the first end of the liquid inlet branch pipe 2120 is arranged opposite to the screen 220 and is communicated with the sewage overflow weir 200 through the screen holes of the screen 220. It can be understood that, since the first end of the liquid inlet branch pipe 2120 is communicated with the sewage overflow weir 200 through the screen holes of the screen 220, the sewage in the sewage overflow weir 200 will be filtered by the screen 220 before entering the liquid inlet branch pipe 2120, further improving the purity of the sewage entering the effluent sedimentation tank 300.

[0050] Please refer to Figure 1 In some embodiments, the first end of each liquid inlet branch pipe 2120 is located between the ultraviolet sterilization module 400 and the weir side wall 600. It can be understood that, since the first end of each liquid inlet branch pipe 2120 is located between the ultraviolet sterilization module 400 and the weir side wall 600, the sewage will be disinfected by the ultraviolet sterilization module 400 before entering the liquid inlet branch pipe 2120.

[0051] Please refer to Figure 1 In some embodiments, the inlet of the sewage outlet pipe 310 is higher than the outlet of the liquid outlet main pipe 2110; the effluent sedimentation tank 300 is further provided with a screen plate 320, and the outlet of the liquid outlet main pipe 2110 is communicated with the inlet of the sewage outlet pipe 310 through the screen holes of the screen plate 320. It can be understood that, since the outlet of the sewage outlet pipe 310 is higher than the outlet of the liquid outlet main pipe 2110, when the sewage enters the effluent sedimentation tank 300, the precipitates in the sewage will settle at the bottom of the effluent sedimentation tank 300, so that the sewage discharged from the sewage outlet pipe 310 will become clearer, further improving the purity of the sewage discharged from the sewage outlet pipe 310. Since the screen plate 320 in the effluent sedimentation tank 300 is located between the outlet of the liquid outlet main pipe 2110 and the inlet of the sewage outlet pipe 310, the outlet of the liquid outlet main pipe 2110 is communicated with the inlet of the sewage outlet pipe 310 through the screen holes of the screen plate 320, and the sewage before entering the sewage outlet pipe 310 can be filtered by the screen plate 320, further improving the purity of the sewage discharged from the sewage outlet pipe 310.

[0052] Please refer to Figure 1 In some embodiments, the ultraviolet sterilization module 400 includes a controller 410 and at least two ultraviolet lamp sterilizers 420, and the at least two ultraviolet lamp sterilizers 420 are arranged along the flow path of the sewage in sequence; the controller 410 is installed outside the sewage overflow weir 200 and is electrically connected to the two ultraviolet lamp sterilizers 420 respectively. It can be understood that, since the at least two ultraviolet lamp sterilizers 420 are arranged along the flow path of the sewage in sequence, the sewage can be disinfected by the ultraviolet lamp sterilizers 420 in sequence along the flow direction, further improving the sterilization effect of the ultraviolet sterilization module 400 on the sewage.

[0053] Referring to Figure 1 In some embodiments, the first sludge discharge port 102 is arranged at the bottom of the water inlet settling tank 100, and the bottom wall of the water inlet settling tank 100 is gradually inclined to the first sludge discharge port 102 in the direction of gravity. It can be understood that, due to the gradual inclination of the bottom wall of the water inlet settling tank 100 to the first sludge discharge port 102 in the direction of gravity at the bottom of the water inlet settling tank 100, the sludge settled down can slide along the bottom wall of the water inlet settling tank 100 to the first sludge discharge port 102 under the action of gravity, thereby improving the discharge speed of the sludge in the water inlet settling tank 100.

[0054] Referring to Figure 1 In some embodiments, the second sludge discharge port 301 is arranged at the bottom of the water outlet settling tank 300, and the bottom wall of the water outlet settling tank 300 is gradually inclined to the second sludge discharge port 301 in the direction of gravity. It can be understood that, due to the gradual inclination of the bottom wall of the water outlet settling tank 300 to the second sludge discharge port 301 in the direction of gravity at the bottom of the water outlet settling tank 300, the sludge settled down can slide along the bottom wall of the water outlet settling tank 300 to the second sludge discharge port 301 under the action of gravity, thereby improving the discharge speed of the sludge in the water outlet settling tank 300.

[0055] Referring to Figure 3 In some embodiments, the inlet weir gate assembly 500 includes a valve frame 510, a valve plate 520, and a rotating driver 530; the valve frame 510 is fixedly installed in the opening and closing area 101, the water inlet settling tank 100 is connected to the sewage overflow weir 200 through the valve frame 510, the valve plate 520 is rotationally arranged in the valve frame 510, and the rotating driver 530 is installed on the valve frame 510; the power output end of the rotating driver 530 is fixedly connected to the valve plate 520 to drive the valve plate 520 to open or close the opening and closing area 101. It can be understood that, since the rotating driver 530 installed on the valve frame 510 is connected to the valve plate 520 rotationally arranged in the valve frame 510 through the power output end, the valve plate 520 can be driven to rotate relative to the valve frame 510 by the rotating driver 530, thereby realizing the opening or closing of the opening and closing area 101.

[0056] Compared with the prior art, the present disclosure has at least the following advantages:

[0057] 1) Since the water inlet sedimentation tank 100 is connected with the sewage inlet pipe 110, the bottom of the sewage overflow weir 200 is higher than the bottom of the water inlet sedimentation tank 100, and the inlet weir gate assembly 500 is installed in the opening and closing area 101 between the water inlet sedimentation tank 100 and the sewage overflow weir 200. After the sewage enters the water inlet sedimentation tank 100 through the sewage inlet pipe 110, the sediment in the sewage will settle to the bottom of the water inlet sedimentation tank 100 under the action of gravity, and the surface layer of the sewage in the water inlet sedimentation tank 100 can enter the sewage overflow weir 200 after the inlet weir gate assembly 500 opens the opening and closing area 101, so as to dynamically control the sewage entering the sewage overflow weir 200 through the inlet weir gate assembly 500.

[0058] 2) Since the weir side wall 600 is arranged between the sewage overflow weir 200 and the water outlet sedimentation tank 300, the direct flow between the sewage overflow weir 200 and the water outlet sedimentation tank 300 is blocked by the weir side wall 600, so that the liquid level height can be formed in the sewage overflow weir 200 after the opening and closing area 101 is closed by the inlet weir gate assembly 500, and the ultraviolet disinfection module 400 installed in the sewage overflow weir 200 can disinfect the sewage in the sewage overflow weir 200. The bottom of the sewage overflow weir 200 is connected to the water outlet sedimentation tank 300, that is, the sewage in the sewage overflow weir 200 flows into the water outlet sedimentation tank 300 synchronously. In this way, the sewage in the sewage overflow weir 200 flows from the bottom layer to the water outlet sedimentation tank 300, so that the sewage in the surface layer and the bottom layer of the sewage overflow weir 200 can continuously flow into the water outlet sedimentation tank 300, and finally the purity of the sewage in the water outlet sedimentation tank 300 is improved.

[0059] 3) Since the liquid level detector 700 is installed on the weir side wall 600, the liquid level of the sewage in the sewage overflow weir 200 can be detected in real time by the liquid level detector 700, and the liquid level detector 700 is electrically connected to the inlet weir gate assembly 500, so that the inlet weir gate assembly 500 can obtain the liquid level value of the sewage in the sewage overflow weir 200 measured by the liquid level detector 700. When the liquid level value is too low, the inlet weir gate assembly 500 can timely open the opening and closing area 101, so that the liquid level of the sewage in the sewage overflow weir 200 is kept in a predetermined range, so as to ensure the effective use of the ultraviolet disinfection module 400.

[0060] The above-described embodiments only express several embodiments of the present disclosure, and the description is more specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present disclosure, some modifications and improvements can be made, which belong to the protection scope of the present disclosure. Therefore, the protection scope of the present disclosure patent should be subject to the appended claims.

Claims

1. A dynamic overflow ultraviolet disinfection system for sewage, comprising an inlet sedimentation tank, a sewage overflow weir, and an outlet sedimentation tank arranged sequentially; the inlet sedimentation tank is used to connect to a sewage inlet pipe, and the outlet sedimentation tank is used to connect to a sewage outlet pipe; the bottom of the sewage overflow weir is higher than the bottom of the inlet sedimentation tank and the bottom of the outlet sedimentation tank, respectively, and the sewage overflow weir is used to allow sewage to flow. Its features are, The wastewater dynamic overflow ultraviolet disinfection system also includes an ultraviolet disinfection module, an inlet gate assembly, a weir side wall, and a liquid level detector; The ultraviolet disinfection module is installed inside the sewage overflow weir and located in the flow path of the sewage; the ultraviolet disinfection module is used to disinfect the sewage; the weir side wall is set between the sewage overflow weir and the effluent settling tank, and the bottom of the sewage overflow weir is connected to the effluent settling tank; the liquid level detector is installed on the weir side wall and is used to detect the liquid level value in the sewage overflow weir; an opening and closing area is formed between the inlet settling tank and the sewage overflow weir; the inlet gate assembly is installed in the opening and closing area and is electrically connected to the liquid level detector; the inlet gate assembly is used to open or close the opening and closing area according to the liquid level value, so that the inlet settling tank and the sewage overflow weir are connected or separated.

2. The wastewater dynamic overflow ultraviolet disinfection system according to claim 1, characterized in that, The wastewater dynamic overflow ultraviolet disinfection system also includes a guide pipe assembly, which is located below the wastewater overflow weir. The inlet end of the guide pipe assembly is connected to the bottom of the wastewater overflow weir, and the outlet end of the guide pipe assembly is connected to the effluent sedimentation tank.

3. The wastewater dynamic overflow ultraviolet disinfection system according to claim 2, characterized in that, The diversion pipe assembly includes a main outlet pipe and at least two inlet branch pipes; the first end of each inlet branch pipe is connected to the bottom of the sewage overflow weir, and the second end of each inlet branch pipe is connected to the first end of the main outlet pipe, and the second end of the main outlet pipe is connected to the effluent sedimentation tank.

4. The wastewater dynamic overflow ultraviolet disinfection system according to claim 3, characterized in that, The first ends of each of the inlet branch pipes are spaced apart at the bottom of the sewage overflow weir, and the second ends of each of the inlet branch pipes are spaced apart along the length of the main outlet pipe.

5. The wastewater dynamic overflow ultraviolet disinfection system according to claim 3, characterized in that, The bottom of the sewage overflow weir is equipped with a sludge screen; the first end of the liquid inlet branch pipe is positioned opposite to the sludge screen and is connected to the sewage overflow weir through the mesh of the sludge screen.

6. The wastewater dynamic overflow ultraviolet disinfection system according to claim 3, characterized in that, The first end of each of the liquid inlet branch pipes is located between the ultraviolet disinfection module and the weir wall.

7. The wastewater dynamic overflow ultraviolet disinfection system according to claim 3, characterized in that, The outlet of the sewage outlet pipe is higher than the inlet of the main effluent pipe; the effluent sedimentation tank is also equipped with a screen plate, and the outlet of the main effluent pipe is connected to the inlet of the sewage outlet pipe through the screen holes of the screen plate.

8. The wastewater dynamic overflow ultraviolet disinfection system according to claim 1, characterized in that, The ultraviolet disinfection module includes a controller and at least two ultraviolet lamp disinfection units, which are arranged sequentially along the flow path of the sewage. The controller is installed outside the sewage overflow weir and is electrically connected to the two ultraviolet lamp disinfection units respectively.

9. The wastewater dynamic overflow ultraviolet disinfection system according to claim 1, characterized in that, The bottom of the inlet sedimentation tank has a first sludge discharge outlet, and the bottom wall of the inlet sedimentation tank gradually slopes towards the first sludge discharge outlet along the direction of gravity; and / or, A second sludge discharge outlet is provided at the bottom of the effluent sedimentation tank, and the bottom wall of the effluent sedimentation tank gradually slopes towards the second sludge discharge outlet along the direction of gravity.

10. The wastewater dynamic overflow ultraviolet disinfection system according to claim 1, characterized in that, The inlet gate assembly includes a valve frame, a valve plate, and a rotary actuator; the valve frame is fixedly installed in the opening and closing area, the inlet sedimentation tank is connected to the sewage overflow weir through the valve frame, the valve plate is rotatably disposed within the valve frame, and the rotary actuator is installed on the valve frame; the power output end of the rotary actuator is fixedly connected to the valve plate to drive the valve plate to open or close the opening and closing area.

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