A sedimentation tank for sewage treatment
By using a closed rectangular tank, an inlet mixing mechanism, a V-shaped flow sedimentation tank, and an inclined tube slow-flow sedimentation component, the problems of low efficiency and odor diffusion in traditional sewage treatment sedimentation tanks are solved, achieving a highly efficient and closed sewage treatment effect.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- HUBEI TIANTAI ENVIRONMENTAL PROTECTION ENG CO LTD
- Filing Date
- 2025-09-02
- Publication Date
- 2026-07-24
AI Technical Summary
Traditional wastewater treatment sedimentation tanks suffer from low treatment efficiency, large footprint, high operating costs, odor diffusion, poor flocculation effect, and difficulty in treating high concentrations of suspended solids, making it difficult to meet the high standards of modern industrial production.
The rectangular tank with a closed design, combined with an inlet mixing mechanism, a V-shaped flow sedimentation tank, an inclined tube slow-flow sedimentation component, and a closed top plate, ensures uniform mixing of wastewater and chemicals, provides a long sedimentation path and a large sedimentation area, improves the sedimentation efficiency of flocs, and reduces odor diffusion.
It achieves efficient and closed-loop wastewater treatment, reduces odor diffusion, improves floc sedimentation efficiency and effluent quality, and reduces operating costs and maintenance difficulty.
Smart Images
Figure CN224548173U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of sedimentation tank technology, and in particular relates to a sedimentation tank for sewage treatment. Background Technology
[0002] In the industrial production sector, especially in various production workshops, wastewater discharge and treatment is a crucial environmental protection task.
[0003] With increasingly stringent environmental regulations and a growing scarcity of water resources, how to efficiently and economically treat industrial wastewater and achieve water resource recycling has become a critical issue that enterprises urgently need to address.
[0004] Traditional wastewater treatment methods, such as natural sedimentation and filtration, can remove suspended solids and impurities from wastewater to some extent, but they often have drawbacks such as low treatment efficiency, large footprint, high operating costs, and the potential for secondary pollution.
[0005] Specifically, traditional sedimentation tanks often employ an open structure, which can easily lead to the spread of odors during treatment, negatively impacting the surrounding environment. Furthermore, uneven mixing of influent and chemicals results in poor flocculation, making it difficult for fine particles to settle effectively and affecting effluent quality. In addition, traditional sedimentation tanks have limited sedimentation paths and areas, making them insufficient for treating high-concentration, high-suspended-solids industrial wastewater, and failing to meet the high standards of wastewater treatment required by modern industrial production.
[0006] To address the aforementioned issues, some improved wastewater treatment sedimentation tank designs have emerged in recent years, such as adding stirring devices to enhance chemical mixing and employing inclined tube or plate sedimentation technology to increase the sedimentation area. However, these designs often still suffer from drawbacks such as complex structures, inconvenient maintenance, high costs, or unstable treatment effects. Further technological innovation and improvement are still needed, particularly in areas such as closed-loop treatment, efficient chemical mixing, optimized sedimentation paths, and fine particle sedimentation.
[0007] Therefore, developing a sedimentation tank for wastewater treatment that is simple in structure, easy to operate, highly efficient, and capable of closed-loop treatment is of great significance for improving the treatment effect of industrial wastewater, reducing operating costs, protecting the environment, and realizing the recycling of water resources.
[0008] The information disclosed in this background section is intended only to enhance the understanding of the general background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content
[0009] The purpose of this invention is to provide a sedimentation tank for wastewater treatment, which reduces odor diffusion and pollution through a closed design; enhances reaction effect through an efficient mixing mechanism; improves sedimentation efficiency and enhances the sedimentation of fine particles through an optimized sedimentation path and inclined tube slow flow design; and features a stable structure, convenient operation, and reduced maintenance costs.
[0010] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a sedimentation tank for wastewater treatment, comprising a rectangular tank body; a conical bottom is provided at the lower end of the rectangular tank body; a sewage discharge pipe is provided at the conical bottom; a vertical partition plate is fixedly provided on the left wall of the rectangular tank body between the front and rear walls; a water inlet mixing mechanism is provided on the left side of the partition plate; a V-shaped flow-around sedimentation tank is fixed between the front and rear walls of the rectangular tank body and the right wall of the partition plate; a row of sedimentation guide pipes extending towards the conical bottom are fixedly provided through the middle of the V-shaped flow-around sedimentation tank; an inclined tube slow-flow sedimentation assembly is provided between the front and rear walls of the rectangular tank body above the V-shaped flow-around sedimentation tank body and between the right wall of the partition plate and the right wall of the rectangular tank body; a clear water output trough is fixedly provided between the right wall of the partition plate above the inclined tube slow-flow sedimentation assembly and the right wall of the rectangular tank body; a clear water output pipe communicating with the clear water output trough is fixedly provided through the right wall of the rectangular tank body.
[0011] As a preferred embodiment of this utility model, the upper end of the rectangular pool is fixed with a closed top plate.
[0012] As a preferred embodiment of this utility model, the water inlet mixing mechanism includes a sewage inlet pipe that penetrates and is fixed in the middle of the left wall of the rectangular pool. The sewage inlet pipe is connected to a sewage source via a pipe and a pipe pump. A dosing pipe is fixedly connected to the outer part of the sewage inlet pipe, which is connected to an existing automatic dosing device. A distribution pipe is fixedly connected to the inner end of the sewage inlet pipe and is arranged perpendicularly thereto. The distribution pipe is fixed between the front and rear inner walls of the rectangular pool. A row of diversion outlets is opened at the upper end of the distribution pipe. A vertical baffle is provided between the front and rear inner walls of the rectangular pool between the distribution pipe and the partition plate. A horizontal baffle is fixed to the left wall of the rectangular pool directly below the distribution pipe and the vertical baffle.
[0013] As a preferred embodiment of this utility model, the inclined tube slow-flow sedimentation assembly includes a rectangular support frame, a wire mesh, and an inclined tube array; the rectangular support frame is fixed between the front and rear walls of the rectangular pool and between the right wall of the partition plate and the right wall of the rectangular pool; the wire mesh is fixed on the rectangular support frame; the inclined tube array is installed above the wire mesh; a shielding plate is provided on the bottom surface of the rectangular support frame that does not cover the inclined tube array.
[0014] As a preferred embodiment of this utility model, at least four fixed support legs are provided below the conical pool bottom.
[0015] This utility model has the following beneficial effects: 1. This utility model features a rectangular tank with a fixed enclosed top plate, ensuring the entire wastewater treatment process takes place in a closed environment. This effectively reduces the spread of odors during treatment, avoids pollution to the external environment, and protects the health of operators. The inlet mixing mechanism introduces wastewater through the wastewater inlet pipe and automatically adds flocculants and other treatment agents through the dosing pipe. The distribution pipe and its branch outlet design allow for uniform mixing of wastewater and agents. Vertical and horizontal baffles further increase mixing time and effect, promote floc formation, and improve treatment efficiency.
[0016] 2. This invention, through the combination of a V-shaped flow-around sedimentation tank and a sedimentation guide pipe, provides a longer sedimentation path and a larger sedimentation area for the flocs. Wastewater flows slowly within the V-shaped tank, and the flocs gradually sink under gravity and are concentrated at the bottom of the conical tank through the guide pipe, effectively improving sedimentation efficiency.
[0017] 3. This utility model's inclined tube slow-flow sedimentation component increases the sedimentation area and reduces the water flow velocity through the design of the inclined tube array. This allows the remaining fine flocs to be effectively precipitated on the inclined tubes, further improving the effluent water quality.
[0018] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description
[0019] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0020] Figure 1 This is a schematic diagram of the sedimentation tank for wastewater treatment according to this utility model.
[0021] Figure 2 for Figure 1 A cross-sectional schematic diagram.
[0022] Figure 3 for Figure 1 A schematic diagram of the structure after the closed top plate has been removed.
[0023] The attached diagram lists the components represented by each number as follows: 1-Rectangular tank body, 2-Conical tank bottom, 3-Sewage pipe, 4-Divider plate, 5-V-shaped flow sedimentation tank, 6-Sedimentation guide pipe, 7-Clear water output tank, 8-Clear water output pipe, 9-Enclosed top plate, 10-Sewage inlet pipe, 11-Dosing pipe, 12-Distribution circular pipe, 13-Diversion outlet, 14-Vertical baffle, 15-Horizontal baffle, 16-Rectangular support frame, 17-Wire mesh, 18-Inclined pipe, 19-Shielding plate, 20-Fixed support leg. Detailed Implementation
[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Specific Implementation Example 1: Please see Figure 1-3 As shown, this utility model is a sedimentation tank for wastewater treatment, specifically designed for the sedimentation treatment process of wastewater in production workshops. The sedimentation tank includes a rectangular tank body 1 with a conical bottom 2 at its lower end. A drain pipe 3 is located in the center of the conical bottom 2 for periodically discharging settled sludge. A closed top plate 9 is fixed to the upper end of the rectangular tank body 1 to ensure that the treatment process takes place in a closed environment, reducing odor diffusion and external pollution.
[0026] A vertical partition plate 4 is fixedly installed on the left wall of the rectangular tank 1, dividing the tank into left and right parts. The left side of the partition plate 4 is the inlet mixing area, which is equipped with an inlet mixing mechanism. This mechanism includes a sewage inlet pipe 10 that runs through and is fixed in the middle of the left wall of the rectangular tank 1. The sewage inlet pipe 10 is connected to the sewage source through a pipe and a pipe pump, introducing the sewage generated in the production workshop into the sedimentation tank. The sewage inlet pipe 10 is fixedly connected to a dosing pipe 11 on the outer side of the rectangular tank 1. The dosing pipe 11 is connected to the existing automatic dosing equipment, which automatically adds flocculants and other treatment agents according to the sewage quality.
[0027] A distribution pipe 12 is fixedly connected to the inner end of the sewage inlet pipe 10 and is arranged perpendicularly thereto. The distribution pipe 12 is fixed between the front and rear inner walls of the rectangular tank 1, and a row of diversion outlets 13 is opened at its upper end to evenly distribute the sewage to the left side area of the rectangular tank 1. A vertical baffle 14 is set between the front and rear inner walls of the rectangular tank 1 between the distribution pipe 12 and the partition plate 4. A horizontal baffle 15 is fixed on the left wall of the rectangular tank 1 directly below the distribution pipe 12 and the vertical baffle 14. These baffles effectively increase the residence time and mixing effect of sewage in the inlet area, so that the flocculant reacts fully with the sewage to form larger flocs.
[0028] Subsequently, the wastewater carrying the flocculants enters a V-shaped flow-around sedimentation tank 5, which is fixed between the front and rear walls of the rectangular tank 1 and the right wall of the partition plate 4. Inside the V-shaped flow-around sedimentation tank 5, the wastewater flows slowly along the V-shape, and the flocculants gradually sink under gravity. A row of sedimentation guide pipes 6, extending towards the conical bottom 2, is fixed through the middle of the V-shaped flow-around sedimentation tank 5. These guide pipes guide the sinking flocculants to the conical bottom 2, further promoting sludge concentration and discharge.
[0029] An inclined tube slow-flow sedimentation assembly is installed between the front and rear walls of the rectangular pool 1 above the V-shaped flow sedimentation tank 5 and between the right wall of the partition plate 4 and the right wall of the rectangular pool 1. This assembly includes a rectangular support frame 16, a wire mesh 17, and an array of inclined tubes 18. The rectangular support frame 16 is fixed between the front and rear walls of the rectangular pool 1 and the right wall of the partition plate 4, the wire mesh 17 is fixed to the rectangular support frame 16, and the array of inclined tubes 18 is installed above the wire mesh 17. The design of the inclined tubes 18 increases the sedimentation area and reduces the water flow velocity, allowing the remaining fine flocs to settle further. A shielding plate 19 is installed on the bottom surface of the portion of the rectangular support frame 16 not covered by the array of inclined tubes 18 to prevent the settled sludge from being re-carried up by the water flow.
[0030] After being treated by the inclined tube slow-flow sedimentation component, the clean water rises above the component and enters the clean water output trough 7, which is fixed between the right wall of the partition plate 4 and the right wall of the rectangular tank 1. A clean water output pipe 8, which is connected to the clean water output trough 7, is fixed through the right wall of the rectangular tank 1, discharging the treated clean water from the sedimentation tank for further treatment or reuse.
[0031] At least four fixed support legs 20 are installed below the conical bottom 2 to ensure the stable operation of the sedimentation tank. The entire sedimentation process takes place in a closed environment, effectively reducing odor diffusion and external pollution, and improving wastewater treatment efficiency and quality.
[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.
[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.
Claims
1. A sedimentation tank for wastewater treatment, characterized in that: It includes a rectangular pool body (1); a conical pool bottom (2) is provided at the lower end of the rectangular pool body (1); and a sewage pipe (3) is provided at the conical pool bottom (2). A vertical partition plate (4) is fixedly installed on the left wall of the rectangular pool (1) between the front and rear walls; a water inlet and medicine mixing mechanism is installed on the left side of the partition plate (4); A V-shaped flow sedimentation tank (5) is fixed between the front and rear walls of the rectangular pool (1) and the right wall of the partition plate (4). A row of sedimentation guide pipes (6) extending toward the bottom of the conical pool (2) is fixed through the middle of the V-shaped flow sedimentation tank (5). Inclined tube slow-flow sedimentation components are provided between the front and rear walls of the rectangular pool (1) above the V-shaped flow sedimentation tank (5) and the right wall of the partition plate (4) and the right wall of the rectangular pool (1). A clear water output trough (7) is fixed between the right wall of the partition plate (4) above the inclined tube slow-flow sedimentation component and the right wall of the rectangular pool (1); a clear water output pipe (8) communicating with the clear water output trough (7) is fixed through the right wall of the rectangular pool (1).
2. The sedimentation tank for wastewater treatment according to claim 1, characterized in that, The upper end of the rectangular pool (1) is fixed with a closed top plate (9).
3. The sedimentation tank for wastewater treatment according to claim 2, characterized in that, The water inlet mixing mechanism includes a sewage inlet pipe (10) that runs through and is fixed in the middle of the left wall of the rectangular pool (1); the sewage inlet pipe (10) is fixedly connected to a dosing pipe (11) on the outer side of the rectangular pool (1); the inner end of the sewage inlet pipe (10) is fixedly connected to a distribution pipe (12) arranged perpendicularly, and the distribution pipe (12) is fixed between the front and rear inner walls of the rectangular pool (1); a row of diversion outlets (13) is opened at the upper end of the distribution pipe (12); a vertical baffle plate (14) is provided between the front and rear inner walls of the rectangular pool (1) between the distribution pipe (12) and the partition plate (4); a horizontal baffle plate (15) is fixedly provided on the left wall of the rectangular pool (1) directly below the distribution pipe (12) and the vertical baffle plate (14).
4. The sedimentation tank for wastewater treatment according to claim 3, characterized in that, The inclined tube slow-flow sedimentation assembly includes a rectangular support frame (16), a wire mesh (17), and an array of inclined tubes (18); the rectangular support frame (16) is fixed between the front and rear walls of the rectangular pool body (1) and the right wall of the partition plate (4) and the right wall of the rectangular pool body (1); the wire mesh (17) is fixed on the rectangular support frame (16); the array of inclined tubes (18) is installed above the wire mesh (17); a shielding plate (19) is provided on the bottom surface of the rectangular support frame (16) that does not cover the array of inclined tubes (18).
5. The sedimentation tank for wastewater treatment according to claim 4, characterized in that, At least four fixed support legs (20) are provided below the conical pool bottom (2).