A UASB device integrated with inclined tube sedimentation
Patent Information
- Application Number
- CN202522021068.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-09-19
- Publication Date
- 2026-09-01
- Estimated Expiration
- 2035-09-19
AI Technical Summary
[0003]然而，传统UASB反应器在实际工程应用中仍存在一些显著问题，首先，尽管三相分离器在一定程度上可实现气液固分离，但由于水力负荷或污泥活性的波动，出水中仍常常携带一定量的悬浮污泥颗粒，导致出水水质不稳定，通常需后续设置沉淀池等单元进行进一步固液分离，增加了系统复杂性与处理成本；其次，传统UASB反应器与后续沉淀池多为分体式设计，不仅占地面积大、基建投资高，还在连接部分存在较大的水力损失，影响整体处理效率与经济性，此外，运行过程中易发生“跑泥”现象，即活性污泥随出水流失，导致反应器内生物量减少，处理效能下降，甚至造成系统运行失败
1、将斜管组件的位置作为沉淀区与UASB反应区在垂直方向上进行一体化集成设计，一体化结构取代了传统UASB后接二次沉淀池的分散式布局，大幅减少污水处理系统的总占地面积，降低基建与管道连接成本，同时减少水力损失，提升系统整体运行效率，反应区与沉淀区垂直叠加设计不仅布局紧凑，也简化了操作流程，减少污泥回流量和控制难度；
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Figure CN224704460U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of UASB reactor technology, and more specifically, to a UASB device that integrates inclined tube sedimentation. Background Technology
[0002] Upflow anaerobic sludge blanket (UASB) reactors are a highly efficient anaerobic biological treatment technology widely used for treating high-concentration organic wastewater. They use a bottom water distribution system to make wastewater flow upwards, where anaerobic microorganisms in the sludge blanket degrade organic matter and produce biogas. UASB reactors are usually equipped with a three-phase separator (gas, liquid, solid) to separate the biogas produced during the reaction, the treated wastewater, and the activated sludge.
[0003] However, traditional UASB reactors still have some significant problems in practical engineering applications. First, although the three-phase separator can achieve gas-liquid-solid separation to a certain extent, due to fluctuations in hydraulic load or sludge activity, the effluent often still carries a certain amount of suspended sludge particles, resulting in unstable effluent quality. It is usually necessary to set up subsequent sedimentation tanks and other units for further solid-liquid separation, which increases the complexity of the system and the treatment cost. Second, traditional UASB reactors and subsequent sedimentation tanks are mostly designed separately, which not only occupy a large area and have high infrastructure investment, but also have large hydraulic losses at the connection points, affecting the overall treatment efficiency and economy. In addition, the "sludge run-out" phenomenon is prone to occur during operation, that is, the activated sludge is lost with the effluent, resulting in a reduction in biomass in the reactor, a decrease in treatment efficiency, and even system failure. Utility Model Content
[0004] In order to overcome the above-mentioned defects of the prior art, this utility model provides a UASB device that integrates inclined tube precipitation.
[0005] To achieve the above objectives, this utility model provides the following technical solution: a UASB device integrating inclined tube sedimentation, comprising a shell, a UASB reaction zone at the bottom of the shell, a water distributor at the bottom of the UASB reaction zone, an umbrella-shaped flow guide hood above the water distributor, an inclined tube assembly above the umbrella-shaped flow guide hood, a three-phase separator above the inclined tube assembly, an outlet weir above the three-phase separator, a water supply mechanism connected to the bottom outer side of the shell, and a return mechanism connected to the top outer side of the shell.
[0006] As a further improvement to the technical solution of this utility model, the two ends of the umbrella-shaped air guide are fixedly connected to the two inner walls of the shell by screws.
[0007] As a further improvement to the technical solution of this utility model, the inclined tube assembly is fixedly connected inside the shell, and a number of flat inclined holes are equidistantly arranged inside the inclined tube assembly.
[0008] As a further improvement to the technical solution of this utility model, the water supply mechanism includes a filter box disposed on one side of an external water storage tank. A first water pump is installed between the filter box and the water storage tank. The inlet of the first water pump is connected to the inside of the water storage tank through a pipe, and the outlet of the first water pump is connected to a first water delivery pipe section. One end of the first water delivery pipe section is connected to the top of the inner cavity of the filter box, and a float valve is installed at the end of the first water delivery pipe section. A filter assembly is disposed at the bottom of the filter box, and a second water delivery pipe section is connected inside the filter box. One end of the second water delivery pipe section extends to the bottom of the filter box, and the other end of the second water delivery pipe section is connected to two diversion pipe sections through a tee pipe. The ends of the two diversion pipe sections are respectively connected to a third water delivery pipe section and a fourth water delivery pipe section. The ends of the third water delivery pipe section and the fourth water delivery pipe section are connected to a fifth water delivery pipe section. One end of the fifth water delivery pipe section is connected to a water distributor inside the shell.
[0009] As a further improvement to the technical solution of this utility model, the filter assembly includes a fixed seat fixedly installed on the inner wall of the bottom of the filter box. A plurality of filter screen frames are equidistantly inserted on the top of the fixed seat, and a plurality of slots for inserting the filter screen frames are provided on the top of the fixed seat. The filter screen frame includes a fixed frame with an edge, and a filter screen is provided inside the fixed frame.
[0010] As a further improvement to the technical solution of this utility model, a second water pump is installed on both the third and fourth water supply pipe sections, and a first valve is provided on both sides of the second water pump at the corresponding positions on the third and fourth water supply pipe sections.
[0011] As a further improvement to the technical solution of this utility model, the reflux mechanism includes a sixth water supply pipe section connected to the water storage tank. One end of the sixth water supply pipe section extends to the top of the shell and is located in the gap between the three-phase separator and the inclined tube assembly. A circulation pump is installed on the sixth water supply pipe section, and second valves are provided on both sides of the circulation pump on the sixth water supply pipe section.
[0012] The beneficial effects of this utility model are: 1. The inclined tube assembly is designed as an integrated sedimentation zone and UASB reaction zone in the vertical direction. The integrated structure replaces the traditional decentralized layout of UASB followed by secondary sedimentation tank, which greatly reduces the total footprint of the wastewater treatment system, reduces infrastructure and pipeline connection costs, reduces hydraulic losses, and improves the overall operating efficiency of the system. The vertical superposition design of the reaction zone and sedimentation zone is not only compact, but also simplifies the operation process, reduces sludge return flow and control difficulty. 2. By adding inclined tube components and combining them with umbrella-shaped flow guide structures, efficient separation of gas-liquid-solid three phases is achieved, effectively preventing suspended sludge from being lost with the effluent, significantly reducing the concentration of suspended solids in the effluent, thereby maintaining stable biomass in the reaction zone and ensuring treatment efficiency and water quality compliance. 3. By installing a filter box and filter assembly on the water supply mechanism, it is convenient to filter and purify the pumped water during use. The filter assembly is equipped with multiple independent filter screens, which can perform multi-stage filtration during use and are easy to remove and clean. The float valve can prevent the water level inside the filter box from overflowing. The dual pipeline layout, with pumps and valves installed on both the third and fourth water supply pipeline sections, allows one pipeline to be operated as needed, making it convenient to stop the water pump for maintenance without affecting use. Attached Figure Description
[0013] Figure 1 This is a schematic diagram of the structure of this utility model.
[0014] Figure 2 This is a schematic diagram of the internal structure of the filter box in this utility model.
[0015] Figure 3 This is a schematic diagram of the filter screen frame in this utility model.
[0016] Figure 4 This is a schematic diagram of the structure of the fixed base in this utility model.
[0017] Figure 5 This is a schematic diagram of the inclined tube assembly in this utility model.
[0018] Figure 6 This is a cross-sectional view of the inclined tube assembly in this utility model.
[0019] The attached diagram is labeled as follows: 1. Shell; 2. UASB reaction zone; 3. Water distributor; 4. Umbrella-shaped flow guide; 5. Inclined tube assembly; 6. Three-phase separator; 7. Outlet weir; 8. Filter box; 9. First water pump; 10. First water delivery pipe section; 11. Second water delivery pipe section; 12. Third water delivery pipe section; 13. Fourth water delivery pipe section; 14. Diversion pipe section; 15. Second water pump; 16. First valve; 17. Fifth water delivery pipe section; 18. Sixth water delivery pipe section; 19. Circulation pump; 20. Second valve; 21. Fixing base; 22. Filter screen frame; 101. Float valve; 211. Slot; 221. Fixing frame; 222. Filter screen; 501. Flat inclined hole. Detailed Implementation
[0020] 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 protection scope of the present utility model.
[0021] As attached Figure 1-6 The UASB device shown includes a shell 1, a UASB reaction zone 2 at the bottom of the shell 1, a water distributor 3 at the bottom of the UASB reaction zone 2, an umbrella-shaped flow guide 4 above the water distributor 3, an inclined tube assembly 5 above the umbrella-shaped flow guide 4, a three-phase separator 6 above the inclined tube assembly 5, and an outlet weir 7 above the three-phase separator 6. A water supply mechanism is connected to the bottom outer side of the shell 1, and a return flow mechanism is connected to the top outer side of the shell 1.
[0022] As attached Figure 1 As shown, the two ends of the umbrella-shaped air guide 4 are fixedly connected to the two inner walls of the housing 1 by screws, which facilitates the installation and fixation of the umbrella-shaped air guide 4 inside the housing 1.
[0023] As attached Figure 1 and attached Figure 5-6 As shown, the inclined tube assembly 5 is fixedly connected inside the housing 1, and several flat inclined holes 501 are equidistantly arranged inside the inclined tube assembly 5.
[0024] As attached Figure 1-4As shown, the water supply mechanism includes a filter box 8 installed on one side of an external water storage tank. A first water pump 9 is installed between the filter box 8 and the water storage tank. The inlet of the first water pump 9 is connected to the inside of the water storage tank through a pipe, and the outlet of the first water pump 9 is connected to a first water delivery pipe section 10. One end of the first water delivery pipe section 10 is connected to the top of the inner cavity of the filter box 8, and a float valve 101 is installed at the end of the first water delivery pipe section 10. A filter assembly is installed at the bottom of the filter box 8, and a second water delivery pipe section 11 is connected inside the filter box 8. One end of the second water delivery pipe section 11 extends to the bottom of the filter box 8, and the other end of the second water delivery pipe section 11 is connected to two diversion pipe sections 14 through a tee pipe. The ends of the two diversion pipe sections 14 are respectively connected to a third water delivery pipe section 12 and a fourth water delivery pipe section 13. The ends of the third water supply pipe section 12 and the fourth water supply pipe section 13 are connected to the fifth water supply pipe section 17. One end of the fifth water supply pipe section 17 is connected to the water distributor 3 inside the housing 1. The filter assembly includes a fixed base 21 fixedly installed on the inner wall of the bottom of the filter box 8. Several filter screen frames 22 are equidistantly inserted on the top of the fixed base 21, and several slots 211 for inserting the filter screen frames 22 are provided on the top of the fixed base 21. The filter screen frame 22 includes a fixed frame 221 set on the edge. The filter screen 222 is set inside the fixed frame 221. The third water supply pipe section 12 and the fourth water supply pipe section 13 are both equipped with a second water pump 15, and the second water pump 15 located at corresponding positions on the third water supply pipe section 12 and the fourth water supply pipe section 13 are both equipped with a first valve 16 on both sides to facilitate water supply to the water distributor 3 during use.
[0025] As attached Figure 1 As shown, the reflux mechanism includes a sixth water supply pipe section 18 connected to the water storage tank. One end of the sixth water supply pipe section 18 extends to the top of the housing 1 at the gap between the three-phase separator 6 and the inclined tube assembly 5. A circulation pump 19 is installed on the sixth water supply pipe section 18. Second valves 20 are provided on both sides of the circulation pump 19 on the sixth water supply pipe section 18 to facilitate the recycling of water.
[0026] Working principle: This invention designs a UASB device that integrates inclined tube sedimentation, the specific structure of which is shown in the attached instruction manual. Figure 1-6As shown, in this technical solution, water from the storage tank is pumped to the distributor 3 via a water supply mechanism. A filter box 8 and filter assembly are installed on the water supply mechanism to facilitate filtration and purification of the pumped water during use. Multiple independent filter screens 22 are installed on the filter assembly, enabling multi-stage filtration and easy removal for cleaning. A float valve 101 prevents overflow from the filter box 8 due to high water levels. The dual-pipeline arrangement, with pumps and valves installed on both the third and fourth water supply pipe sections 12 and 13, allows for selective operation of one pipeline as needed, facilitating pump shutdown for maintenance without affecting operation. The inclined tube assembly 5 serves as a sedimentation zone. The UASB reaction zone is vertically integrated with the sedimentation zone, replacing the traditional decentralized layout of a secondary sedimentation tank following the UASB. This significantly reduces the total footprint of the wastewater treatment system, lowers infrastructure and pipeline connection costs, reduces hydraulic losses, and improves overall system efficiency. The vertically superimposed design of the reaction zone and sedimentation zone not only creates a compact layout but also simplifies the operation process, reduces sludge return flow and control difficulty. By adding inclined tube components 5 and combining them with umbrella-shaped flow guide hoods 4, efficient separation of the gas-liquid-solid three phases is achieved, effectively preventing suspended sludge from being lost with the effluent and significantly reducing the concentration of suspended solids in the effluent. This maintains stable biomass in the reaction zone, ensuring treatment efficiency and water quality compliance.
[0027] In the accompanying drawings of the embodiments disclosed in this utility model, only the structures involved in the embodiments of this utility model are shown. Other structures can be referred to with ordinary design. In the absence of conflict, the same embodiment and different embodiments of this utility model can be combined with each other. Finally: The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A UASB device integrated with inclined tube settler, comprising a shell (1), characterized in that: The bottom of the housing (1) is provided with a UASB reaction zone (2), a water distributor (3) is installed at the bottom of the UASB reaction zone (2), an umbrella-shaped flow guide (4) is provided above the water distributor (3), an inclined tube assembly (5) is installed above the umbrella-shaped flow guide (4), a three-phase separator (6) is provided above the inclined tube assembly (5), and an outlet weir (7) is provided above the three-phase separator (6). The bottom outer side of the housing (1) is connected to a water supply mechanism, and the top outer side of the housing (1) is connected to a return flow mechanism.
2. The UASB device integrated with a collector tube sedimentation according to claim 1, characterized in that: The two ends of the umbrella-shaped air guide (4) are fixedly connected to the two inner walls of the shell (1) by screws.
3. The UASB device integrated with a collector tube settler according to claim 1, characterized in that: The inclined tube assembly (5) is fixedly connected inside the housing (1), and a number of flat inclined holes (501) are equidistantly arranged inside the inclined tube assembly (5).
4. The UASB device integrated with a collector tube settler according to claim 1, wherein: The water supply mechanism includes a filter box (8) installed on one side of an external water storage tank. A first water pump (9) is installed between the filter box (8) and the water storage tank. The inlet of the first water pump (9) is connected to the inside of the water storage tank through a pipe, and the outlet of the first water pump (9) is connected to a first water delivery pipe section (10). One end of the first water delivery pipe section (10) is connected to the top of the inner cavity of the filter box (8), and a float valve (101) is installed at the end of the first water delivery pipe section (10). A filter assembly is provided at the bottom of the filter box (8), and the interior of the filter box (8) is connected to... A second water supply pipe section (11) is provided. One end of the second water supply pipe section (11) extends to the bottom of the filter box (8), and the other end of the second water supply pipe section (11) is connected to two diversion pipe sections (14) through a three-way pipe. The ends of the two diversion pipe sections (14) are respectively connected to the third water supply pipe section (12) and the fourth water supply pipe section (13). The ends of the third water supply pipe section (12) and the fourth water supply pipe section (13) are connected to the fifth water supply pipe section (17). One end of the fifth water supply pipe section (17) is connected to the water distributor (3) inside the shell (1).
5. The UASB device integrated with a collector tube settler according to claim 4, characterized in that: The filter assembly includes a fixed base (21) fixedly installed on the inner wall of the bottom of the filter box (8). Several filter screen frames (22) are equidistantly inserted on the top of the fixed base (21), and several slots (211) for inserting the filter screen frames (22) are provided on the top of the fixed base (21). The filter screen frame (22) includes a fixed frame (221) provided on the edge, and a filter screen (222) is provided inside the fixed frame (221).
6. The UASB device integrated with a collector tube settler according to claim 4, wherein: A second water pump (15) is installed on both the third water supply pipe section (12) and the fourth water supply pipe section (13), and a first valve (16) is provided on both sides of the second water pump (15) located at the corresponding position on the third water supply pipe section (12) and the fourth water supply pipe section (13).
7. The UASB device integrated with a collector tube settler according to claim 1, wherein: The backflow prevention mechanism comprises a sixth water conveying pipe section (18) communicated with the water storage tank, one end of the sixth water conveying pipe section (18) extends to a gap position between the three-phase separator (6) and the inclined pipe assembly (5) at the top of the shell (1), and a circulating pump (19) is installed on the sixth water conveying pipe section (18), and a second valve (20) is arranged on both sides of the circulating pump (19) on the sixth water conveying pipe section (18).