A prefabricated sewage treatment device for emergency scenarios

Abstract

The application relates to the technical field of sewage treatment equipment, and particularly provides a fabricated sewage treatment equipment for emergency scenes, which comprises an operation table, an aeration tank is arranged on the operation table, a center cylinder is arranged in the aeration tank, the outer periphery of the center cylinder is a sedimentation zone, the inner periphery of the center cylinder is an aeration zone, a flow baffle is arranged at the top outer periphery of the center cylinder, a guide flow zone is formed between the flow baffle and the center cylinder, a backflow gap is formed between the bottom of the center cylinder and the bottom of the aeration tank, a blocking plate is arranged at the outer periphery of the bottom of the center cylinder, the bottom of the blocking plate is fixedly connected with the bottom of the aeration tank, the blocking plate can prevent wastewater passing through the backflow gap from disturbing the impurities deposited in the sedimentation zone, the height of the blocking plate is lower than that of the center cylinder, the position of the top of the blocking plate is higher than that of the bottom of the flow baffle, so that the wastewater in the guide flow zone flows obliquely upwards when entering the sedimentation zone, and disturbance to the impurities at the bottom of the sedimentation zone is further reduced.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a prefabricated wastewater treatment equipment for emergency scenarios. Background Technology

[0002] The activated sludge process is currently the most widely used biochemical treatment process in the field of wastewater treatment. Among them, the completely mixed activated sludge process can effectively avoid the problems of excessive front-end load and insufficient back-end treatment efficiency in plug flow processes because the substrate distribution in the aeration tank is uniform and the microbial concentration and reaction conditions are consistent. It has advantages such as high volume utilization rate, strong resistance to shock loads, and stable operation, and is especially suitable for emergency wastewater treatment, temporary wastewater treatment, and decentralized wastewater treatment scenarios.

[0003] To meet the demands for rapid installation, flexible relocation, and plug-and-play operation in emergency scenarios, prefabricated integrated wastewater treatment equipment based on the fully mixed activated sludge process has become an important development direction in the industry. This type of equipment typically integrates functions such as aeration, mixing, flow guidance, sedimentation, and sludge return into a single unit, achieving rapid wastewater purification and compliant discharge.

[0004] However, existing integrated fully mixed activated sludge devices have obvious defects in actual operation. Under the action of aeration and stirring, the mixed liquor in the aeration zone is prone to flow directly into the sedimentation zone through the return gap, causing violent disturbance of the water flow inside the sedimentation zone and forming eddies. This disrupts the static environment of sludge-water separation, resulting in a significant decrease in sedimentation effect and a high concentration of suspended solids in the effluent. Summary of the Invention

[0005] Therefore, it is necessary to provide a prefabricated sewage treatment device for emergency scenarios to address the problem of poor settling effect of current sewage treatment equipment.

[0006] The above objectives are achieved through the following technical solutions: A prefabricated wastewater treatment device for emergency scenarios, comprising: An operating platform is provided, on which an aeration tank is detachably mounted. An inlet pipe is located at the bottom of the aeration tank, and an outlet pipe is located at the top. A central cylinder is located inside the aeration tank. The outer periphery of the central cylinder is a sedimentation zone, and the inner periphery is an aeration zone. The aeration zone is connected to the inlet pipe and filled with activated sludge. A return flow gap is formed between the bottom of the central cylinder and the bottom of the aeration tank, used to return activated sludge to the aeration zone. A baffle plate is located on the outer periphery of the upper end of the central cylinder, forming a flow guiding zone between the baffle plate and the central cylinder. An impeller surface aerator is located in the aeration zone to agitate the wastewater in the aeration zone, and the wastewater in the aeration zone enters the sedimentation zone through the guide zone at the top of the central cylinder; A baffle plate is disposed on the outer periphery of the central cylinder. The bottom of the baffle plate is fixedly connected to the bottom of the aeration tank. The height of the baffle plate is lower than the height of the central cylinder, and the top of the baffle plate is higher than the bottom of the baffle plate. The space between the baffle plate and the central cylinder is connected to the flow guide zone and the return slit.

[0007] Furthermore, the aeration tank is equipped with an adjustment component, which is used to adjust the amount of activated sludge in the wastewater passing through the return sluice. The sludge return flow rate is positively correlated with the content of organic pollutants in the wastewater.

[0008] Furthermore, the adjustment assembly includes an adjustment rod and an adjustment wheel. The lower end of the adjustment rod is rotatably mounted on the upper end of the baffle plate. A horizontally placed mounting plate is fixedly mounted on the aeration tank. The adjustment rod is vertically mounted and threadedly connected to the mounting plate. The adjustment wheel is coaxial and fixedly mounted on the upper end of the adjustment rod. The side wall of the central cylinder has a tapered section with the smaller end facing upward and the larger end facing downward.

[0009] Furthermore, an arc-shaped sieve plate is provided on the outer periphery of the baffle plate, and the arc-shaped sieve plate has multiple small holes that allow liquid to pass through. The arc-shaped sieve plate is directly opposite the second opening between the upper end of the baffle plate and the lower end of the baffle plate.

[0010] Furthermore, a cleaning component is provided on the outer periphery of the baffle plate, the cleaning component being used to clean the arc-shaped screen plate.

[0011] Furthermore, the cleaning assembly includes a cleaning water pipe and multiple cleaning nozzles. The cleaning water pipe surrounds the outer periphery of the baffle plate, and the multiple cleaning nozzles are evenly arranged on the cleaning water pipe, all facing the arc-shaped screen plate, and connected to the cleaning water pipe.

[0012] Furthermore, the bottom sidewall of the aeration tank and the bottom of the central cylinder both have conical slopes, the bottom of the central cylinder is in an open state, and the conical slopes of the bottom sidewall of the aeration tank and the conical slopes of the bottom of the central cylinder are parallel to each other.

[0013] Furthermore, the operating platform is detachably equipped with multiple secondary sedimentation tanks, which are connected in series.

[0014] Furthermore, the multiple secondary sedimentation tanks are connected in series via connecting water pipes.

[0015] Furthermore, the operating platform is equipped with protective railings.

[0016] The beneficial effects of this invention are: This invention incorporates a baffle plate within the aeration tank. This baffle plate prevents wastewater flowing through the return slit from entering the sedimentation zone and disturbing the impurities settled there. Furthermore, the height of the baffle plate is lower than that of the central cylinder, and the top of the baffle plate is higher than the bottom of the baffle plate. This allows the wastewater in the guiding zone to flow obliquely upwards when entering the sedimentation zone, further reducing disturbance to the impurities at the bottom of the sedimentation zone and thus enhancing the sedimentation effect of the impurities in the sedimentation zone.

[0017] This invention introduces an adjustment component within the aeration tank. This component can adjust the return flow rate of activated sludge to the aeration zone based on the content of organic pollutants in the wastewater. When the content of organic pollutants in the wastewater is high, the return flow rate of activated sludge is increased to improve the biochemical treatment capacity. When the content of organic pollutants in the wastewater is low, the return flow rate of activated sludge is reduced, thereby saving energy and reducing consumption.

[0018] This invention enhances the sedimentation effect in the sedimentation zone by setting an arc-shaped screen plate on the outer periphery of the baffle plate. The arc-shaped screen plate has multiple small holes and is used to prevent activated sludge and impurities in the wastewater from flowing upward when passing through the second opening.

[0019] The present invention provides a cleaning component on the outer periphery of the baffle plate, which is used to clean the arc-shaped screen plate and prevent the arc-shaped screen plate from becoming clogged.

[0020] This invention significantly reduces the sediment content in wastewater by setting up multiple secondary sedimentation tanks connected in series, thereby improving the quality of sediment treatment in wastewater. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a prefabricated sewage treatment device for emergency scenarios provided in an embodiment of the present invention; Figure 2 for Figure 1 A top view of a prefabricated wastewater treatment device for emergency scenarios provided in one embodiment; Figure 3 for Figure 2 A cross-sectional view along AA of a prefabricated wastewater treatment device for emergency scenarios provided in one embodiment; Figure 4 for Figure 3 A partially enlarged view of part X of a prefabricated sewage treatment device for emergency scenarios provided in one embodiment; Figure 5 This is a schematic diagram of the internal structure of a prefabricated sewage treatment device for emergency scenarios provided in an embodiment of the present invention, after removing the workbench; Figure 6 This is a schematic diagram of the aeration tank structure of a prefabricated sewage treatment equipment for emergency scenarios provided in an embodiment of the present invention; Figure 7 for Figure 6 A cross-sectional isometric view of the aeration tank of a prefabricated sewage treatment equipment for emergency scenarios provided in one embodiment; Figure 8 This is a process flow diagram of a prefabricated sewage treatment system for emergency scenarios, provided as an embodiment of the present invention.

[0022] in: 100. Control panel; 110. Aeration tank; 111. Inlet pipe; 112. Outlet pipe; 120. Central cylinder; 121. Connecting plate; 130. Aeration zone; 131. Return slit; 140. Sedimentation zone; 141. Sewage pipe; 150. Baffle plate; 160. Guide zone; 161. First opening; 170. Baffle plate; 171. Second opening; 180. Arc-shaped screen plate; 200. Impeller surface aerator; 210. Mounting plate; 220. Drive motor; 230. Adjusting rod; 240. Adjusting wheel; 250. Cleaning water pipe; 260. Cleaning nozzle; 300. Secondary sedimentation tank; 310. Connecting water pipe. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0024] The component designations used in this document, such as "first" and "second," are merely for distinguishing the described objects and do not have any sequential or technical meaning. The terms "connection" and "linkage" used in this invention, unless otherwise specified, include both direct and indirect connections (linkages). It should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," and "counterclockwise," indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are used only for the convenience of describing the invention and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the invention.

[0025] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0026] The following reference Figures 1-8 This invention describes a prefabricated sewage treatment device for emergency scenarios.

[0027] A prefabricated sewage treatment device for emergency scenarios, with a daily sewage treatment capacity of up to 100m³ depending on the needs of the emergency scenario. 3 ~2000m 3 The device is suitable for use within a certain range and includes an operating platform 100. An aeration tank 110 is detachably mounted on the operating platform 100. An inlet pipe 111 is installed at the bottom of the aeration tank 110, and an outlet pipe 112 is installed at the top of the aeration tank 110. The aeration tank 110, the outlet pipe 112, and the inlet pipe 111 are all detachably mounted on the operating platform 100. During assembly, the operator can use a crane to lift the operating platform 100 to the designated emergency area and lift the aeration tank 110 onto the operating platform 100 to complete the assembly within the emergency area. The aeration tank 110 has a central cylinder 120 inside, which divides the aeration tank 110 into inner and outer parts. The outer periphery of the central cylinder 120 is the sedimentation zone 140, and the inner periphery of the central cylinder 120 is the aeration zone 130. The aeration zone 130 is filled with activated sludge (a flocculent biological community composed of a large number of aerobic microorganisms, protozoa, fungi and their adsorbed organic and inorganic matter, which is the core carrier for degrading organic pollutants in wastewater in the activated sludge process). The activated sludge is used to decompose organic pollutants in wastewater. The bottom of the sedimentation zone 140 is equipped with a sewage pipe 141, and the top of the sedimentation zone 140 is connected to the effluent pipe 112. A return flow slit 131 is formed between the bottom of the central cylinder 120 and the bottom of the aeration tank 110. The return flow slit 131 is used to return some of the activated sludge to the aeration zone 130 to maintain a stable concentration of microorganisms in the aeration zone 130 and ensure that the biochemical reaction continues to proceed efficiently.

[0028] A baffle plate 150 is provided on the outer periphery of the upper end of the central cylinder 120, forming a guide zone 160 between the baffle plate 150 and the outer periphery of the central cylinder 120. The guide zone 160 is connected to the sedimentation zone 140 and the return slit 131. An impeller surface aerator 200 is installed in the aeration zone 130. When the impeller surface aerator 200 rotates, it agitates the wastewater in the aeration zone 130 to increase the oxygen content in the wastewater. The wastewater in the aeration zone 130 will pass through the guide zone 160 at the top of the central cylinder 120, and part of the wastewater flowing through the guide zone 160 will enter the sedimentation zone 140, while part of the wastewater will return to the aeration zone 130 through the return slit 131. The wastewater entering the sedimentation zone 140 will have impurities settled in the sedimentation zone 140 and will be discharged from the top outlet pipe 112. When the accumulation of impurities reaches a certain level, the drain pipe 141 needs to be opened to discharge the impurities. This invention includes a baffle plate 170 on the outer periphery of the central cylinder 120. The bottom of the baffle plate 170 is fixedly connected to the bottom of the aeration tank 110. The baffle plate 170 prevents wastewater passing through the return slit 131 from entering the sedimentation zone 140 and disturbing the impurities settled in the sedimentation zone 140. Furthermore, the height of the baffle plate 170 is lower than the height of the central cylinder 120, and the top of the baffle plate 170 is higher than the bottom of the baffle plate 150. This allows the wastewater in the guide zone 160 to flow obliquely upwards when entering the sedimentation zone 140. This step reduces disturbance to impurities at the bottom of the sedimentation zone 140, thereby enhancing the sedimentation effect of impurities in the sedimentation zone 140. Furthermore, the space between the baffle plate 170 and the central cylinder 120, as well as the flow guide zone 160 and the return slit 131, are connected, thus not affecting the return of activated sludge in the aeration zone 130. Some activated sludge will enter the return slit 131 through the space between the baffle plate 170 and the central cylinder 120 via the flow guide zone 160, thereby ensuring that some activated sludge can be returned and maintaining a stable microbial concentration in the aeration zone 130.

[0029] It should be noted that the flow direction of the wastewater is as follows: Figure 4 As shown, wastewater enters the aeration zone 130 through the inlet pipe 111 and circulates within the aeration zone 130 in the direction indicated by arrow a. The wastewater reacts fully with the activated sludge in the aeration zone 130. Subsequently, the wastewater passes over the top of the central cylinder 120 and enters the guide zone 160 in the direction indicated by arrow b. Part of the wastewater flows back into the aeration zone 130 through the return slit 131 in the direction indicated by arrow c. Part of the wastewater enters the sedimentation zone 140 in the direction indicated by arrow d. Some of the activated sludge and impurities in the wastewater will sink to the bottom of the sedimentation zone 140 in the direction indicated by arrow e. The wastewater in the sedimentation zone 140 flows into the outlet pipe 112 in the direction indicated by arrow f.

[0030] In a further embodiment, the aeration tank 110 of the present invention is equipped with an adjustment component. The adjustment component is used to adjust the amount of activated sludge in the wastewater passing through the return slit 131. The return flow rate of activated sludge is positively correlated with the content of organic pollutants in the wastewater. When the content of organic pollutants in the wastewater is high, more activated sludge is needed in the aeration zone 130 to participate in the degradation reaction. Therefore, a high concentration of activated sludge in the aeration zone 130 is maintained. At this time, the return flow rate of activated sludge is increased by the adjustment component. When the content of organic pollutants in the wastewater is low, less activated sludge is needed in the aeration zone 130 to treat the organic pollutants. Therefore, the concentration of activated sludge in the aeration zone 130 is appropriately reduced. At this time, the return flow rate of activated sludge is reduced by the adjustment component. Thus, the present invention can adaptively adjust the sludge return flow rate according to the content of organic pollutants in the wastewater, so that the sludge concentration in the aeration zone 130 always matches the content of organic pollutants in the wastewater, ensuring that the system can operate stably and efficiently under different water quality conditions.

[0031] Specifically, the adjustment component in this embodiment includes an adjustment rod 230 and an adjustment wheel 240. The lower end of the adjustment rod 230 is rotatably connected to the upper end of the baffle plate 150. To facilitate the connection of the adjustment rod 230, a horizontally placed mounting plate 210 is fixedly installed on the aeration tank 110 in this embodiment. The adjustment rod 230 is vertically installed and threadedly connected to the mounting plate 210. The upper end of the adjustment rod 230 is coaxial and fixedly connected to the adjustment wheel 240. When the adjustment wheel 240 rotates, it can drive the adjustment rod 230 to rotate synchronously. When the adjustment rod 230 rotates, it drives the baffle plate 150 to move in the vertical direction, thereby adjusting the position of the baffle plate 150. Furthermore, in this embodiment, the size of the first opening 161 between the lower end of the baffle 150 and the outer periphery of the central cylinder 120 is negatively correlated with the return flow rate of activated sludge. When the return flow rate of activated sludge needs to be increased, the size of the first opening 161 needs to be reduced to increase the flow velocity of wastewater through the first opening 161, thereby increasing the amount of activated sludge passing through the return slot 131. When the return flow rate of activated sludge needs to be reduced, the size of the first opening 161 needs to be increased to reduce the flow velocity of wastewater through the first opening 161, thereby reducing the amount of activated sludge passing through the return slot 131.

[0032] It should be noted that when the first opening 161 is small, the wastewater flow velocity through the first opening 161 increases, and the kinetic energy of the water flow increases accordingly. The high-speed water flow can exert a stronger flushing and carrying effect on the activated sludge settled on the outer periphery of the central cylinder 120, causing more activated sludge to be carried into the return slit 131 by the water flow, thereby increasing the activated sludge return flow rate and meeting the activated sludge return demand under high-load treatment conditions. At the same time, the high-speed water flow can also reduce the deposition and blockage of activated sludge at the first opening 161, ensuring smooth flow of wastewater and activated sludge and avoiding a decrease in treatment efficiency due to activated sludge accumulation. When the first opening 161 is large, the wastewater flow velocity slows down, the kinetic energy of the water weakens, the flushing and carrying capacity of activated sludge decreases, and the amount of sludge entering the return slit 131 decreases accordingly. This can precisely match the activated sludge return demand under low-load treatment conditions, achieving flexible and precise control of the activated sludge return flow rate, ensuring stable equipment operation and achieving the required treatment effect.

[0033] Specifically, to make the size of the first opening 161 adjustable, the side wall of the central cylinder 120 in this embodiment has a conical section with the small end facing upward and the large end facing downward. The lower end of the baffle plate 150 and the large end of the conical section of the central cylinder 120 form the first opening 161. When the baffle plate 150 moves upward, the distance between the lower end of the baffle plate 150 and the large end of the conical section increases, thereby increasing the size of the first opening 161. When the baffle plate 150 moves downward, the distance between the lower end of the baffle plate 150 and the large end of the conical section decreases, thereby decreasing the size of the first opening 161. The operator can adjust the position of the baffle plate 150 in advance according to the concentration of wastewater to be treated. That is, the position of the baffle plate 150 can be adjusted in advance by adjusting the adjusting wheel 240 and adjusting rod 230.

[0034] In a further embodiment, such as Figure 4 As shown, in this embodiment, the impeller surface aerator 200 is rotatably mounted on the mounting plate 210. The shaft of the impeller surface aerator 200 is rotatably connected to the mounting plate 210, and a drive motor 220 is provided on the mounting plate 210. The drive motor 220 is used to drive the impeller surface aerator 200 to rotate at high speed, so that the impeller can agitate the wastewater in the aeration zone 130, forcibly dissolving oxygen in the air into the mixed liquid, providing sufficient dissolved oxygen for the microorganisms in the aeration tank 110 to degrade organic pollutants. Furthermore, the wastewater, activated sludge, and dissolved oxygen are rapidly, uniformly, and completely mixed in the aeration zone 130, which can also prevent activated sludge from settling at the bottom of the tank and ensure that the microorganisms are always in a suspended reaction state.

[0035] It should be noted that in this embodiment, the upper end of the central cylinder 120 is fixed to the lower end of the mounting plate 210, thereby fixing the central cylinder 120 inside the aeration tank 110, and making the bottom of the central cylinder 120 suspended above the bottom of the aeration tank 110 to form a return slit 131. Multiple connecting plates 121 are fixedly provided on the upper end of the central cylinder 120, and one end of the multiple connecting plates 121 is fixed to the bottom of the mounting plate 210, thereby fixing the central cylinder 120 to the mounting plate 210.

[0036] In a further embodiment, an arc-shaped screen plate 180 is provided on the outer periphery of the baffle plate 150. The arc-shaped screen plate 180 has multiple small holes, which allow liquid to pass through and block activated sludge and impurities from passing through. The arc-shaped screen plate 180 is directly opposite the second opening 171 between the upper end of the baffle plate 170 and the lower end of the baffle plate 150, so that when the wastewater passes through the second opening 171, it can also pass through the arc-shaped screen plate 180, thereby blocking the activated sludge and impurities in the wastewater from flowing upward, thereby further improving the sedimentation efficiency in the sedimentation zone 140.

[0037] Specifically, in this embodiment, the bottom sidewall of the aeration tank 110 is a conical slope, with the smaller end facing down and the larger end facing up. The smaller end of the conical slope connects to the bottom of the aeration tank 110, which is horizontal. The inlet pipe 111 is located at the center of the bottom of the aeration tank 110, and wastewater enters the aeration tank 110 through the inlet pipe 111. The bottom of the central cylinder 120 also has a conical slope and is open. The conical slope at the bottom of the central cylinder 120 is parallel to the conical slope of the aeration tank 110, and a return slit 131 is formed between them. The combination of the conical slopes allows the activated sludge to flow back more smoothly and stably along the return slit 131, avoiding turbulence and sedimentation.

[0038] In a further embodiment, a cleaning component is provided on the outer periphery of the baffle plate 150 of the present invention. Since some small holes of the arc-shaped screen plate 180 may become clogged when it has been working for a long time, the cleaning component is needed to clean the arc-shaped screen plate 180 so that the small holes on the arc-shaped screen plate 180 are always in a normal state, and to avoid the small holes from becoming clogged and affecting the sedimentation quality of impurities in the sedimentation zone 140 inside the aeration tank 110.

[0039] Specifically, the cleaning component in this embodiment includes a cleaning water pipe 250 and multiple cleaning nozzles 260. The cleaning water pipe 250 is disposed on the outer periphery of the baffle plate 150 and surrounds the baffle plate 150. The multiple cleaning nozzles 260 are evenly distributed on the cleaning water pipe 250 and all of them face the arc-shaped screen plate 180. The multiple cleaning nozzles 260 are connected to the cleaning water pipe 250. After water is introduced into the cleaning water pipe 250, the multiple cleaning nozzles 260 spray water towards the arc-shaped screen plate 180 to clean the arc-shaped screen plate 180 and prevent the small holes on the arc-shaped screen plate 180 from becoming clogged.

[0040] It should be noted that in this embodiment, the cleaning water pipe 250 and the cleaning nozzle 260 are located above the arc-shaped screen plate 180, and one side of the arc-shaped screen plate 180 corresponds to the second opening 171, while the multiple cleaning nozzles 260 face the other side of the arc-shaped screen plate 180. When the arc-shaped screen plate 180 is blocked, the cleaning nozzles 260 can rinse the arc-shaped screen plate 180 from the other side, making it easier for the activated sludge or impurities blocking the small holes to detach from the small holes, which can effectively improve the cleaning quality of the cleaning nozzles 260.

[0041] In a further embodiment, the operating platform 100 of the present invention may also be detachably equipped with multiple secondary sedimentation tanks 300, which are connected in series and linked together by a connecting water pipe 310, such as... Figure 3 As shown, Figure 3 The horizontal arrows indicate the direction of wastewater flow, and the vertical arrows indicate the direction of solid impurity sedimentation in the wastewater. The wastewater discharged from the outlet pipe 112 passes through the first secondary sedimentation tank 300 to settle impurities and then enters the second secondary sedimentation tank 300 to settle impurities. Subsequently, it enters the third, fourth, and so on. The content of solid impurities in the wastewater gradually decreases after passing through each secondary sedimentation tank 300.

[0042] Specifically, the control panel 100 in this embodiment is equipped with a guardrail to prevent safety accidents.

[0043] The specific working process of a prefabricated sewage treatment device for emergency scenarios provided by the present invention will be described in conjunction with the above embodiments: assembly: Operators used a crane to hoist the operating platform 100, aeration tank 110, and multiple secondary sedimentation tanks 300 to the designated emergency area in sequence. After hoisting, construction workers connected the outlet pipe 112 and the inlet pipe 111 to the aeration tank 110 and multiple secondary sedimentation tanks 300, and installed guardrails to prevent safety accidents. After installation, an appropriate amount of activated sludge was filled into the aeration tank 110, and the wastewater treatment pipe was connected. Wastewater was introduced into the aeration tank 110 through the inlet pipe 111.

[0044] Adjustment: The operator needs to adjust the position of the baffle plate 150 according to the content of organic pollutants in the wastewater to be treated. When the content of organic pollutants in the wastewater is low, the operator increases the height of the baffle plate 150 by adjusting the wheel 240 and the rod 230, which increases the first opening 161 between the bottom of the baffle plate 150 and the outer periphery of the central cylinder 120, reduces the flow velocity of the wastewater, and reduces the kinetic energy of the water flow, thereby reducing the activated sludge returned through the return slit 131 and appropriately reducing the concentration of activated sludge in the aeration zone 130. When the content of organic pollutants in the wastewater is high, the operator lowers the height of the baffle plate 150 by adjusting the wheel 240 and the rod 230, which decreases the first opening 161 between the bottom of the baffle plate 150 and the outer periphery of the central cylinder 120, increases the flow velocity of the wastewater, and increases the kinetic energy of the water flow, thereby increasing the activated sludge returned through the return slit 131 and increasing the concentration of activated sludge in the aeration zone 130 to match the higher organic pollutant treatment load.

[0045] After adjustment, start the drive motor 220. The drive motor 220 drives the impeller surface aerator 200 to rotate. The impeller surface aerator 200 agitates the wastewater in the aeration zone 130, allowing the wastewater to fully dissolve oxygen. The wastewater flow rate from the inlet pipe 111 is constant and continuously input into the aeration zone 130. After the wastewater level is higher than the top of the central cylinder 120, it enters the guide zone 160. In the guide zone 160, the wastewater flows through the first opening 161 and the second opening 171. After passing through the first opening 161, some of the wastewater flows back to the aeration zone 130 through the return slit 131. Part of the wastewater flows into the sedimentation zone 140 through the second opening 171, and an arc-shaped screen plate 180 is correspondingly installed at the second opening 171. The arc-shaped screen plate 180 can intercept the activated sludge and impurities in the wastewater from flowing upward, thereby improving the sedimentation quality of the sedimentation zone 140. With the blocking effect of the baffle plate 170, the wastewater from the aeration zone 130 passing through the return slit 131 will not disturb the impurities in the sedimentation zone 140. When the wastewater level in the sedimentation zone 140 is higher than the outlet pipe 112, the wastewater will enter the secondary sedimentation tank 300 through the outlet pipe 112 for secondary sedimentation.

[0046] clean: After the aeration tank 110 has been working for a period of time, the small holes on the arc-shaped screen plate 180 will become clogged. Therefore, it is necessary to start the cleaning water pipe 250 regularly. After the cleaning water pipe 250 is connected to the water source, it sprays water towards the arc-shaped screen plate 180 through multiple cleaning nozzles 260 to clean the clogged small holes on the arc-shaped screen plate 180 and prevent the clogged small holes from affecting the sedimentation quality inside the sedimentation zone 140.

[0047] Sewage discharge: When the amount of impurities and activated sludge accumulated in the sedimentation zone 140 exceeds the preset value (this preset value is related to the capacity of the sedimentation zone 140; the larger the capacity, the larger the preset value, and the smaller the capacity, the smaller the preset value; the specific value needs to be set according to the actual situation, and no specific limit is made here), the drain pipe 141 needs to be opened to discharge the sludge in the sedimentation zone 140 to avoid affecting the subsequent wastewater treatment quality.

[0048] This invention also provides a process flow for treating wastewater using a prefabricated wastewater treatment device for emergency scenarios, comprising the following steps: Step S1: Pump the wastewater to be treated into a storage tank for storage; Step S2: Assemble and adjust the aeration tank 110; Step S3: Pump the wastewater into the aeration tank 110. The wastewater enters the sedimentation zone 140 from the guide zone 160 in the aeration tank 110 for sediment separation. Step S4: The wastewater discharged from the aeration tank 110 is then fed into the multi-stage series secondary sedimentation tank 300 for secondary sedimentation, and finally discharged after meeting the standards.

[0049] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0050] The embodiments described above are merely illustrative of several implementations of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A prefabricated sewage treatment device for emergency scenarios, characterized in that, include: An operating platform is provided, on which an aeration tank is detachably mounted. An inlet pipe is located at the bottom of the aeration tank, and an outlet pipe is located at the top. A central cylinder is located inside the aeration tank. The outer periphery of the central cylinder is a sedimentation zone, and the inner periphery is an aeration zone. The aeration zone is connected to the inlet pipe and filled with activated sludge. A return flow gap is formed between the bottom of the central cylinder and the bottom of the aeration tank, used to return activated sludge to the aeration zone. A baffle plate is located on the outer periphery of the upper end of the central cylinder, forming a flow guiding zone between the baffle plate and the central cylinder. An impeller surface aerator is located in the aeration zone to agitate the wastewater in the aeration zone, and the wastewater in the aeration zone enters the sedimentation zone through the guide zone at the top of the central cylinder; A baffle plate is disposed on the outer periphery of the central cylinder. The bottom of the baffle plate is fixedly connected to the bottom of the aeration tank. The height of the baffle plate is lower than the height of the central cylinder, and the top of the baffle plate is higher than the bottom of the baffle plate. The space between the baffle plate and the central cylinder is connected to the flow guide zone and the return slit.

2. The prefabricated sewage treatment equipment for emergency scenarios according to claim 1, characterized in that, The aeration tank is equipped with an adjustment component, which is used to adjust the amount of activated sludge in the wastewater passing through the return sluice. The sludge return flow rate is positively correlated with the organic pollutant content in the wastewater.

3. The prefabricated sewage treatment equipment for emergency scenarios according to claim 2, characterized in that, The adjustment assembly includes an adjustment rod and an adjustment wheel. The lower end of the adjustment rod is rotatably mounted on the upper end of the baffle plate. A horizontally placed mounting plate is fixedly mounted on the aeration tank. The adjustment rod is vertically mounted and threadedly connected to the mounting plate. The adjustment wheel is coaxial and fixedly mounted on the upper end of the adjustment rod. The side wall of the central cylinder has a tapered section with the smaller end facing upward and the larger end facing downward.

4. The prefabricated sewage treatment equipment for emergency scenarios according to claim 1, characterized in that, An arc-shaped sieve plate is provided on the outer periphery of the baffle plate. The arc-shaped sieve plate has multiple small holes that allow liquid to pass through. The arc-shaped sieve plate is directly opposite the second opening between the upper end of the baffle plate and the lower end of the baffle plate.

5. The prefabricated sewage treatment equipment for emergency scenarios according to claim 4, characterized in that, A cleaning component is provided on the outer periphery of the baffle plate, and the cleaning component is used to clean the arc-shaped screen plate.

6. The prefabricated sewage treatment equipment for emergency scenarios according to claim 5, characterized in that, The cleaning assembly includes a cleaning water pipe and multiple cleaning nozzles. The cleaning water pipe surrounds the outer periphery of the baffle plate, and the multiple cleaning nozzles are evenly arranged on the cleaning water pipe, all facing the arc-shaped screen plate, and connected to the cleaning water pipe.

7. The prefabricated sewage treatment equipment for emergency scenarios according to claim 1, characterized in that, The bottom sidewall of the aeration tank and the bottom of the central cylinder both have conical slopes, and the bottom of the central cylinder is in an open state. The conical slopes of the bottom sidewall of the aeration tank and the conical slopes of the bottom of the central cylinder are parallel to each other.

8. The prefabricated sewage treatment equipment for emergency scenarios according to claim 1, characterized in that, The operating platform is detachably equipped with multiple secondary sedimentation tanks, which are connected in series.

9. The prefabricated sewage treatment equipment for emergency scenarios according to claim 8, characterized in that, The multiple secondary sedimentation tanks are connected in series via connecting water pipes.

10. The prefabricated sewage treatment equipment for emergency scenarios according to claim 1, characterized in that, The control panel is equipped with a protective railing.

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