Unpowered high-density settling pond scum cleaning system

Abstract

The utility model discloses an unpowered high-density settling pond scum cleaning system, which comprises a scum collecting tank, a scum conveying pipe and a collecting mechanism, the scum collecting tank is arranged in a settling pond transition area, the top elevation of the scum collecting tank is 50-150mm lower than the liquid level elevation of the settling pond transition area, the length direction of the scum collecting tank is parallel to the width direction of the settling pond transition area, and the scum conveying pipe is arranged in the settling pond transition area. The slag collecting tank extends from one side of the sedimentation tank transition area to the other side of the sedimentation tank transition area, the slag conveying pipe is connected with one end of the slag collecting tank, and the collecting mechanism is connected to the end of the slag conveying pipe. Compared with the prior art, the scum removal device can efficiently remove scum.

Description

Technical Field

[0001] This utility model relates to the field of water treatment technology, and in particular to a non-powered high-density sedimentation tank scum removal system. Background Technology

[0002] High-density sedimentation tanks are wastewater treatment technologies that integrate mixing, flocculation, sedimentation, and sludge thickening. Wastewater first enters the mixing zone, where the added coagulant mixes rapidly and thoroughly under mechanical agitation. Then, the wastewater flows through pipes from the bottom center into the flocculation zone. This zone is equipped with a guide tube and a flocculation mixer, where wastewater, flocculant, and high-concentration return sludge are thoroughly mixed through internal recirculation, resulting in flocculation and the formation of dense floc particles. Subsequently, the wastewater flows from the transition zone into the sedimentation zone. The upper part of the sedimentation zone is equipped with inclined plates (or inclined tubes) for solid-liquid separation, while the lower part is equipped with a sludge thickener for sludge thickening.

[0003] High-density sedimentation tanks have the following main advantages: ① The generated flocs are very dense, which can quickly separate from the clean water, resulting in stable and excellent effluent quality; ② The upward flow velocity in the sedimentation tank area is very high, which can save a significant amount of system floor space; ③ The use of a high-efficiency agitator greatly reduces input energy consumption; ④ The sludge concentration is high, effectively reducing the amount of sludge discharged; ⑤ By adjusting the sludge return flow rate and agitation intensity, the impact of fluctuations in incoming water quality and treated water volume can be effectively reduced, and the tank has strong resistance to shock loads.

[0004] High-density sedimentation tanks have been widely adopted due to their technological advantages, but some technical issues still need to be addressed during actual operation. Factors such as the specific characteristics of the water, inadequate pre-treatment processes, anaerobic fermentation of sludge, inconsistent flocculant quality, uneven mixing of flocculants and wastewater, improper control of the sludge return ratio, and the design flow pattern of the high-density sedimentation tank can lead to the formation of scum, particularly severe in the transition zone between the flocculation and sedimentation areas. Excessive scum accumulation not only directly affects the effluent quality but also significantly impacts the aesthetics. High-density sedimentation tanks typically lack automatic scum removal systems, relying on manual cleaning of the surface, which is not only labor-intensive but also often ineffective.

[0005] In view of this, a non-powered high-density sedimentation tank scum removal system is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a non-powered high-density sedimentation tank scum removal system that can efficiently remove scum.

[0007] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0008] A non-powered high-density sedimentation tank scum removal system includes a scum collection trough, a scum conveying pipe, and a collection mechanism. The scum collection trough is located in the transition zone of the sedimentation tank, and the top elevation of the scum collection trough is 50-150 mm lower than the liquid level elevation of the transition zone. The length direction of the scum collection trough is parallel to the width direction of the transition zone. The scum collection trough extends from one side of the transition zone to the other side. The scum conveying pipe is connected to one end of the scum collection trough, and the collection mechanism is attached to the end of the scum conveying pipe.

[0009] In a preferred embodiment, the system further includes a first waterproof sleeve, which connects the slag collection trough and the slag conveying pipe.

[0010] In a preferred embodiment, the system further includes a pipe support, wherein the slag conveying pipe includes interconnected horizontal and vertical sections, the horizontal section is connected to the slag collection trough, the collection mechanism is supported below the vertical section, and the pipe support fixes the slag conveying pipe to the wall of the sedimentation tank.

[0011] In a preferred embodiment, the slope of the slag collection trough is greater than 5%.

[0012] In a preferred embodiment, a slag discharge valve is provided at the bottom of the slag conveying pipe.

[0013] In a preferred embodiment, the collection mechanism includes a scum filter basket, a filtrate well, and a filtrate discharge pipe. The filtrate well is provided with a grid cover plate, which is 100-200mm above the ground level. The scum filter basket is located on the grid cover plate, and the sieve of the scum filter basket has a mesh size of 20-30. The filtrate discharge pipe is connected to the filtrate well.

[0014] In a preferred embodiment, the distance between the top of the scum filter basket and the end of the scum conveying pipe is 100-200mm.

[0015] In a preferred embodiment, the slag collection tank and the sedimentation tank are constructed together.

[0016] In a preferred embodiment, the diameter of the slag conveying pipe is set to DN200.

[0017] In a preferred embodiment, the width of the slag collection trough is set to 300-600mm, and the height is set to 300-600mm.

[0018] Compared with the prior art, the present invention provides a non-powered high-density sedimentation tank scum removal system, comprising a scum collection trough, a scum conveying pipe, and a collection mechanism. The scum collection trough is located in the transition zone of the sedimentation tank, and its top elevation is 50-150mm lower than the liquid level elevation of the transition zone. Its length is parallel to the width of the transition zone, extending from one side to the other. The scum conveying pipe is connected to one end of the scum collection trough, and the collection mechanism is attached to the end of the scum conveying pipe.

[0019] This system has the following significant technical advantages:

[0020] Firstly, it achieves effective collection and discharge of scum from high-density sedimentation tanks. The special location and structural design of the scum collection trough allow it to naturally collect scum under the influence of water flow. The top elevation is lower than the liquid level in the transition zone of the sedimentation tank, making it easier for scum to flow into the scum collection trough.

[0021] Secondly, it is simple, convenient, economical, and practical. The entire cleaning system requires no power drive, relying solely on the gravity of water flow to complete the collection and discharge of scum. This not only reduces equipment operating costs but also decreases energy consumption, meeting energy conservation and environmental protection requirements. The system has a simple structure, is easy to install and maintain, and requires no complex operation or technical support, greatly improving its practicality and reliability.

[0022] Furthermore, it ensures the quality of the effluent from the high-density sedimentation tank. Timely removal of scum effectively prevents it from affecting the effluent quality. Excessive scum reduces the clarity of the effluent and may even carry harmful substances, affecting water safety. This cleaning system can quickly and effectively remove scum, ensuring stable and excellent effluent quality that meets wastewater treatment requirements.

[0023] At the same time, it greatly improves the visual appeal of high-density sedimentation tanks. Accumulated scum gives an untidy and unsanitary impression, affecting the overall appearance of the sedimentation tank. This cleaning system can promptly remove scum, keeping the sedimentation tank clean and tidy, improving the visual appeal of wastewater treatment facilities and helping to increase public acceptance of wastewater treatment work.

[0024] Finally, it greatly reduces the intensity of manual labor. Compared to traditional manual cleaning methods, this non-powered cleaning system can automatically collect and discharge scum, significantly reducing the workload. Workers no longer need to perform heavy cleaning work on the pool surface; they only need to perform regular maintenance and cleaning of the collection mechanism, reducing labor intensity and improving work efficiency.

[0025] In summary, the non-powered high-density sedimentation tank scum removal system, through its ingenious structural design, achieves effective collection and discharge of scum from high-density sedimentation tanks. It boasts numerous advantages, including simplicity, convenience, cost-effectiveness, guaranteed effluent quality, improved aesthetics, and reduced manual labor intensity, providing strong support for the stable operation and efficient treatment of high-density sedimentation tanks. Attached Figure Description

[0026] Figure 1 This is a plan view of the sedimentation tank used in the non-powered high-density sedimentation tank scum removal system of this utility model.

[0027] Figure 2 yes Figure 1 A schematic diagram of AA in the diagram.

[0028] Figure 3 yes Figure 1 A schematic diagram of BB in the middle.

[0029] 1. Slag collection tank; 2. Slag conveying pipe; 3. First waterproof sleeve; 4. Pipe support; 5. Slag discharge valve; 6. Scum filter basket; 7. Filtrate well; 8. Grating cover; 9. Filtrate discharge pipe; 10. Second waterproof sleeve. Detailed Implementation

[0030] The present invention will be further described in detail below with reference to the accompanying drawings.

[0031] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0032] like Figures 1 to 3 As shown, a non-powered high-density sedimentation tank scum removal system includes a scum collection tank 1, a scum conveying pipe 2, and a collection mechanism. The scum collection tank 1 is located in the transition zone of the sedimentation tank, and the top elevation of the scum collection tank 1 is 50-150 mm lower than the liquid level elevation of the transition zone. The length direction of the scum collection tank 1 is parallel to the width direction of the transition zone. The scum collection tank 1 extends from one side of the transition zone to the other side. The scum conveying pipe 2 is connected to one end of the scum collection tank 1, and the collection mechanism is attached to the end of the scum conveying pipe 2.

[0033] This embodiment of a non-powered high-density sedimentation tank scum removal system includes a scum collection tank 1, a scum conveying pipe 2, and a collection mechanism. The scum collection tank 1 is located in the transition zone of the sedimentation tank, and its top elevation is 50-150mm lower than the liquid level elevation of the transition zone. Its length is parallel to the width direction of the transition zone, extending from one side of the transition zone to the other side. The scum conveying pipe 2 is connected to one end of the scum collection tank 1, and the collection mechanism is attached to the end of the scum conveying pipe 2.

[0034] This system has the following significant technical advantages:

[0035] Firstly, it achieves effective collection and discharge of scum from the high-density sedimentation tank. The special location and structural design of the scum collection tank 1 allow it to naturally collect scum under the action of water flow. The top elevation is lower than the liquid level in the transition zone of the sedimentation tank, making it easier for scum to flow into the scum collection tank 1.

[0036] Secondly, it is simple, convenient, economical, and practical. The entire cleaning system requires no power drive, relying solely on the gravity of water flow to complete the collection and discharge of scum. This not only reduces equipment operating costs but also decreases energy consumption, meeting energy conservation and environmental protection requirements. The system has a simple structure, is easy to install and maintain, and requires no complex operation or technical support, greatly improving its practicality and reliability.

[0037] Furthermore, it ensures the quality of the effluent from the high-density sedimentation tank. Timely removal of scum effectively prevents it from affecting the effluent quality. Excessive scum reduces the clarity of the effluent and may even carry harmful substances, affecting water safety. This cleaning system can quickly and effectively remove scum, ensuring stable and excellent effluent quality that meets wastewater treatment requirements.

[0038] At the same time, it greatly improves the visual appeal of high-density sedimentation tanks. Accumulated scum gives an untidy and unsanitary impression, affecting the overall appearance of the sedimentation tank. This cleaning system can promptly remove scum, keeping the sedimentation tank clean and tidy, improving the visual appeal of wastewater treatment facilities and helping to increase public acceptance of wastewater treatment work.

[0039] Finally, it greatly reduces the intensity of manual labor. Compared to traditional manual cleaning methods, this non-powered cleaning system can automatically collect and discharge scum, significantly reducing the workload. Workers no longer need to perform heavy cleaning work on the pool surface; they only need to perform regular maintenance and cleaning of the collection mechanism, reducing labor intensity and improving work efficiency.

[0040] In summary, the non-powered high-density sedimentation tank scum removal system, through its ingenious structural design, achieves effective collection and discharge of scum from high-density sedimentation tanks. It boasts numerous advantages, including simplicity, convenience, cost-effectiveness, guaranteed effluent quality, improved aesthetics, and reduced manual labor intensity, providing strong support for the stable operation and efficient treatment of high-density sedimentation tanks.

[0041] The inner wall of the slag collection tank 1 is surface-treated and coated with paint or ceramic tiles, so that the slag can be transported quickly.

[0042] An embodiment of a non-powered high-density sedimentation tank scum removal system further includes a first waterproof sleeve 3, which connects the scum collection trough 1 and the scum conveying pipe 2. The first waterproof sleeve 3 connects the scum collection trough 1 and the scum conveying pipe 2, effectively preventing leakage at the connection point, avoiding sewage seepage that could affect surrounding facilities and the working environment, ensuring stable system operation, extending equipment lifespan, and ensuring smooth and unobstructed scum conveying.

[0043] This embodiment of a non-powered high-density sedimentation tank scum removal system also includes a pipe support 4. The scum conveying pipe 2 includes interconnected horizontal and vertical sections. The horizontal section connects to the scum collection trough 1, and the collection mechanism is supported below the vertical section. The pipe support 4 fixes the scum conveying pipe 2 to the wall of the sedimentation tank, with a net distance of 300-500mm between the scum conveying pipe 2 and the tank wall. The pipe support 4 stably fixes the scum conveying pipe 2 to the sedimentation tank wall, ensuring that the scum conveying pipe 2 will not shift or shake due to water flow impact, equipment vibration, or other factors during operation, thus ensuring the continuity and stability of scum conveying. Secondly, the specified clearance of 300-500mm between the slag conveying pipe 2 and the pool wall avoids potential wear or collision damage from direct contact between the slag conveying pipe 2 and the pool wall. It also provides sufficient operating space for pipeline maintenance and repair, facilitating routine inspections and clearing blockages. This effectively improves the reliability, maintainability, and operational efficiency of the entire scum removal system, reduces system downtime due to pipeline failures, and ensures the normal operation of the sedimentation tank.

[0044] The slope of the scum collection trough 1 is greater than 5%, and is set to 5% in this embodiment. This slope allows the scum in the scum collection trough 1 to flow more smoothly towards the scum conveying pipe 2 under the influence of water flow and its own gravity. A larger slope effectively accelerates the flow rate of the scum, reduces the residence time of the scum in the scum collection trough 1, reduces the risk of scum accumulation and blockage, and improves scum collection efficiency. Simultaneously, a reasonable slope design helps maintain a stable scum conveying state under non-powered conditions, ensuring the continuous operation of the entire scum cleaning system, avoiding scum accumulation due to insufficient slope that affects the effluent quality and system appearance, and ensuring the efficient and stable operation of the high-density sedimentation tank.

[0045] A slag discharge valve 5 is installed at the bottom of the slag conveying pipe 2. The slag discharge valve 5 can be a butterfly valve, gate valve, or ball valve. Preferably, the slag discharge valve 5 can be manually controlled, pneumatically controlled, or electrically controlled. The slag discharge valve 5 can precisely control the timing and flow rate of slag discharge. By operating the slag discharge valve 5, the slag can be discharged by gravity of the water flow. Butterfly valves, gate valves, and ball valves each have their own characteristics and can adapt to different working conditions. Manual control is simple and direct, while pneumatic and electric control facilitates remote or automated operation, enhances system flexibility and controllability, ensures orderly and efficient slag cleaning, and improves the operational stability of the sedimentation tank.

[0046] The collection mechanism includes a scum filter basket 6, a filtrate well 7, and a filtrate discharge pipe 9. A grid cover 8 is installed on the filtrate well 7, extending 100-200mm above the ground. The scum filter basket 6 is mounted on the grid cover 8, and its sieve opening is 20-30 mesh, made of stainless steel. The filtrate discharge pipe 9 connects to the filtrate well 7. The scum filter basket 6 effectively intercepts scum discharged from the scum conveying pipe 2. Its 20-30 mesh sieve provides precise filtration, and the stainless steel material is durable and corrosion-resistant. The grid cover 8, extending 100-200mm above the ground, prevents sewage from flowing back into the filtrate well 7 and provides a stable platform for the scum filter basket 6. The filtrate well 7 collects the filtered filtrate, which is then discharged orderly through the filtrate discharge pipe 9, preventing the filtrate from flowing freely and polluting the environment. The overall collection mechanism is reasonably designed, ensuring good solid-liquid separation during the scum removal process, maintaining the cleanliness of the surrounding environment, and improving the reliability and practicality of the entire non-powered high-density sedimentation tank scum removal system.

[0047] The filtrate well 7 is an underground reinforced concrete structure, built together with the sedimentation tank on the same wall. The reinforced concrete structure provides it with excellent compressive strength and durability, enabling it to stably bear filtrate for a long period. Building it together with the sedimentation tank saves construction space, optimizes the overall layout, reduces construction costs and time, and facilitates collaborative operations such as pipeline connections between the two, improving the economy and operational convenience of the non-powered high-density sedimentation tank scum removal system.

[0048] The distance between the top of the scum filter basket 6 and the end of the scum conveying pipe 2 is 100-200mm. Maintaining this distance allows the scum to fall smoothly into the filter basket under gravity, preventing scum from clogging the outlet of the scum conveying pipe 2 or damaging the filter basket due to excessive impact. This reasonable distance provides a buffer space for the scum, ensuring it enters the collection stage in an orderly manner, thus improving the stability and effectiveness of scum collection.

[0049] The scum collection trough 1 is constructed of reinforced concrete and is integrated with the sedimentation tank. The reinforced concrete structure is robust and durable, capable of withstanding long-term scouring and corrosion from sewage and scum, ensuring the structural stability of the scum collection trough 1. This integrated construction method saves floor space, optimizes the overall layout, reduces construction costs and time, and facilitates connection with the internal water flow of the sedimentation tank, ensuring the efficiency and continuity of the scum collection process.

[0050] The diameter of the slag conveying pipe 2 is set to DN200. The DN200 diameter of the slag conveying pipe 2 is a suitable size. It meets the requirements for smooth conveying of scum from the high-density sedimentation tank, avoiding blockages caused by an excessively small diameter, while also avoiding waste of materials and space due to an excessively large diameter, ensuring efficient, stable, and economical operation of the scum cleaning system.

[0051] The width of the scum collection trough 1 is set to 300-600mm, and in this embodiment it is set to 300mm. The height is also set to 300-600mm, and in this embodiment it is set to 300mm. This size can effectively accommodate scum and ensure that the scum can be smoothly collected under the action of water flow.

[0052] The diameter of the filtrate discharge pipe 9 is greater than or equal to the diameter of the slag conveying pipe 2. The slag filtrate is discharged to the sewage network through the filtrate discharge pipe 9. The fact that the diameter of the filtrate discharge pipe 9 is greater than or equal to the diameter of the slag conveying pipe 2 ensures that the filtered slag filtrate can be discharged into the sewage network quickly and smoothly, avoiding filtrate accumulation or poor discharge due to an insufficient pipe diameter.

[0053] The filtrate discharge pipe 9 is provided with a second waterproof sleeve 10 for connecting to the filtrate well 7. The second waterproof sleeve 10 effectively prevents leakage at the connection and avoids filtrate overflow and pollution of the surrounding environment.

[0054] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Unless otherwise specified, an element defined by the phrase "comprising..." or "including..." does not exclude the presence of additional elements in the process, method, article, or terminal device that includes said element. Additionally, in this document, "greater than," "less than," "exceeding," etc., are understood to exclude the stated number; "above," "below," "within," etc., are understood to include the stated number.

[0055] The above description of the embodiments is provided to facilitate understanding and use of the present invention by those skilled in the art. It is obvious to those skilled in the art that various modifications can be easily made to the embodiments, and the general principles described herein can be applied to other embodiments without creative effort. Therefore, the present invention is not limited to the above embodiments. Any improvements and modifications made by those skilled in the art based on the disclosure of the present invention without departing from the scope of the present invention should be within the protection scope of the present invention.

Claims

1. A non-powered high-density settling tank scum cleaning system, characterized by, The slag collecting groove is arranged in the transition area of the sedimentation tank, and the top of the slag collecting groove is 50-150 mm lower than the liquid level of the transition area of the sedimentation tank.

2. A scum cleaning system for a high-density gravity settling tank according to claim 1, wherein The first waterproof sleeve is connected to the slag collecting groove and the slag conveying pipe.

3. The unpowered high-density silt lancing system of claim 1, wherein, The slag conveying pipe comprises a horizontal section and a vertical section which are connected to each other, the horizontal section is connected to the slag collecting groove, the collecting mechanism is connected to the lower part of the vertical section, and the pipe support is used to fix the slag conveying pipe to the wall of the sedimentation tank.

4. The unpowered high-density silt lancing system of claim 1, wherein, The slope of the slag collecting groove is greater than 5%.

5. The unpowered high-density silt lancing system for clarifiers as claimed in claim 1 wherein, The bottom of the slag conveying pipe is provided with a slag discharging valve.

6. The unpowered high-density silt lancing system for clarifiers as claimed in claim 1 wherein, The collecting mechanism comprises a floating slag filter basket, a filtrate well and a filtrate discharging pipe, the filtrate well is provided with a grid cover plate, the grid cover plate is 100-200 mm higher than the ground, the floating slag filter basket is arranged on the grid cover plate, the mesh size of the floating slag filter basket is 20-30 mesh, and the filtrate discharging pipe is connected to the filtrate well.

7. The floating scum cleaning system for an unpowered high-density settling basin of claim 6, wherein, The distance between the top of the floating slag filter basket and the end of the slag conveying pipe is 100-200 mm.

8. The unpowered high-density silt lancing system of claim 1, wherein, The slag collecting groove and the sedimentation tank are combined.

9. The floating scum removal system for a high-density gravity settling tank of claim 1, wherein, The diameter of the slag conveying pipe is DN200.

10. The floating scum removal system for a high-density gravity settling tank of claim 1, wherein, The width of the slag collecting groove is 300-600 mm, and the height of the slag collecting groove is 300-600 mm.

Images