WO2023173952A1 - Sludge anaerobic digestion tank - Google Patents

Sludge anaerobic digestion tank Download PDF

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Publication number
WO2023173952A1
WO2023173952A1 PCT/CN2023/074374 CN2023074374W WO2023173952A1 WO 2023173952 A1 WO2023173952 A1 WO 2023173952A1 CN 2023074374 W CN2023074374 W CN 2023074374W WO 2023173952 A1 WO2023173952 A1 WO 2023173952A1
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WO
WIPO (PCT)
Prior art keywords
biogas
pipe
vertical
digester
stirring
Prior art date
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PCT/CN2023/074374
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French (fr)
Chinese (zh)
Inventor
周友飞
胡维杰
张辰
生骏
周娟娟
龚晓露
Original Assignee
上海市政工程设计研究总院（集团）有限公司
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Publication of WO2023173952A1 publication Critical patent/WO2023173952A1/en

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    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F11/00—Treatment of sludge; Devices therefor
    • C02F11/02—Biological treatment
    • C02F11/04—Anaerobic treatment; Production of methane by such processes
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/06—Sludge reduction, e.g. by lysis
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E50/00—Technologies for the production of fuel of non-fossil origin
    • Y02E50/30—Fuel from waste, e.g. synthetic alcohol or diesel

Definitions

  • This application mainly relates to the field of environmental protection technology, especially an anaerobic sludge digester.
  • Sludge is the final removal of organic matter energy in the sewage treatment process.
  • the exploration and utilization of energy in the sewage treatment process must start with sludge.
  • Anaerobic digestion technology has four major advantages: reduction, harmlessness, stabilization and resource utilization. It can reduce sludge pollution to the environment while recovering energy. Anaerobic digestion technology has become an inevitable trend in the development of sludge disposal technology in the future. one.
  • anaerobic digesters mainly use mechanical stirring, but mechanical stirring often causes uneven mixing of sludge, resulting in a low anaerobic digestion rate of sludge.
  • the technical problem to be solved by this application is to provide a sludge anaerobic digester in order to overcome the shortcomings in the prior art of uneven sludge mixing resulting in low anaerobic digestion rate during mechanical stirring.
  • a sludge anaerobic digester includes a digester body, a mechanical stirring component and a biogas stirring component; the mechanical stirring component includes a vertical shaft mechanical stirrer and a mixing blade.
  • the vertical shaft mechanical stirring The device is located inside the digester body for stirring sludge; the stirring blades are provided on the side walls of the vertical shaft mechanical mixer; the biogas stirring assembly is located inside the digester body and surrounds the Mechanical mixing component layout.
  • a biogas stirring component is arranged around the mechanical stirring component to avoid
  • the sludge is deposited in the dead-end weak area of the digester body, which solves the problem of uneven sludge mixing here, greatly improves the mixing efficiency of the sludge in the anaerobic digester body, and increases the anaerobic digestion rate of the sludge.
  • mechanical mixing is mainly used and biogas mixing is supplemented, which avoids the mixing system being too complicated.
  • stirring blades are arranged in multiple layers along the vertical direction of the digester body; and/or,
  • the mechanical stirring assembly also includes a flow guide baffle, which is provided at the side wall of the digester body; and/or,
  • the flow guide baffle is installed vertically on the side wall of the digester body; and/or,
  • the flow guide baffles are evenly distributed along the side walls of the digester tank body, and there is a certain angle between the flow guide baffles and the side walls of the digester tank body.
  • each layer of blades serves as the stirring center to form a sludge stirring and rotating layer.
  • Multiple layers of stirring blades are provided to form multiple layers of sludge stirring and rotating layers in the vertical direction of the entire digester body, thereby achieving Mix the sludge in the digester body more fully; the diameter of the vertical shaft mechanical mixer blade is limited, the sludge near the inner wall of the digester body has low mixing intensity, and the mixing effect is poor.
  • a guide baffle is arranged along the inner wall of the digester body. , using the swirling effect of the vertical shaft mechanical mixer to locally block and interfere with the sludge at the diversion baffle, thereby forming local area sludge disturbance and enhancing the sludge mixing effect near the wall of the digester.
  • the vertical height of the guide baffle starts from 1/4-1/3 of the height of the digester body from the bottom of the digester body to 1/4-1 of the top of the digester body. It ends at /3 the height of the digester body, and the length of the guide baffle is 1/2-1/3 of the height of the digester body.
  • the above arrangement is adopted to accurately define the effective range of the guide baffle, allowing it to play its role more effectively in actual use.
  • the biogas mixing assembly includes a biogas main pipe, a biogas horizontal distribution pipe, a biogas distribution branch pipe, and a biogas vertical mixing pipe.
  • the biogas vertical mixing pipe includes a biogas vertical transmission pipe.
  • the biogas main pipe is used to transport biogas to The biogas horizontal distribution pipe then passes through the biogas distribution branch pipe to the biogas vertical transmission pipe.
  • a biogas distribution branch control valve is installed on the biogas distribution branch pipe for regulating Control the amount of biogas in the vertical biogas transmission pipe.
  • the biogas is transmitted to the vertical biogas pipe through the biogas horizontal distribution pipe, which can realize multi-directional biogas circulation mixing and make the sludge more fully mixed; a control valve is installed on the biogas horizontal distribution pipe to adjust the mixing intensity in a timely manner. .
  • the pipe diameter of the biogas horizontal distribution pipe gradually becomes smaller from the end close to the biogas main pipe to the end far away from the biogas main pipe.
  • the biogas horizontal pipe adopts the above structural form. On the one hand, it can adapt to the actual flow rate of biogas in the biogas pipe and save pipe materials; on the other hand, the flow rate of biogas increases as the diameter of the pipe becomes smaller. , thereby making the overall gas output of the biogas diffusion pipe uniform and maintaining the uniform stability of the entire biogas diffusion and mixing system.
  • biogas vertical transmission pipe is arranged around the vertical shaft mechanical agitator, and there is a certain inclination angle between the biogas vertical transmission pipe and the vertical shaft mechanical agitator.
  • the defective area of mechanical stirring is spatially distributed in a cylindrical shape, and vertical biogas transmission pipes are installed around the vertical shaft mechanical stirrer, which can make up for the defect of uneven stirring in this area, thereby improving the efficiency of anaerobic digestion.
  • the distance between the vertical biogas transmission pipe and the vertical shaft mechanical stirrer is 1/8 to 3/8 of the length of the digester body.
  • the mixing intensity in the area near the vertical shaft mechanical mixer is high, and the middle area between the vertical shaft mechanical mixer and the digester body is the weak stirring area in the digester.
  • Arranging the vertical biogas transmission pipe here can achieve Better stirring action.
  • the vertical biogas mixing pipe also includes a vertical biogas diffusion pipe, the vertical biogas diffusion pipe has a plurality of biogas diffusion holes, and the vertical biogas diffusion pipe is connected with the vertical transmission pipe of biogas.
  • the biogas flows out through the biogas diffusion holes, making the biogas distribution more uniform everywhere, the biogas mixing effect is better, and the anaerobic efficiency is further improved.
  • the length of the biogas vertical diffusion pipe is consistent with the length of the guide baffle.
  • the location of the biogas vertical diffusion pipe is the weak area of mechanical stirring.
  • the length of the vertical biogas diffusion pipe section is consistent with the length of the guide baffle, which can fully fill the weak area of mechanical stirring and is highly targeted. , the mixing effect is good; on the other hand, it avoids the waste of pipe materials caused by excessive setting of biogas diffusion pipe sections, which is economical and has the best overall technical and economic benefits.
  • biogas diffusion holes are arranged at equal intervals along the vertical biogas diffusion pipe; and/or,
  • the biogas diffusion holes are evenly arranged in multiple directions along the pipe wall at the same vertical height of the biogas diffusion pipe.
  • the biogas diffusion holes on the biogas vertical diffusion pipe are arranged in vertical multi-layers, and are arranged in multiple directions along the pipe wall at the same height, which can realize all-round mixing of the vertical and horizontal spaces in the biogas mixing area to the greatest extent Give full play to the efficacy of biogas mixing and improve anaerobic efficiency.
  • the positive and progressive effect of this application is that by setting up a biogas mixing component around the mechanical mixing component, it prevents sludge from depositing in the weak areas of the dead corners of the digester body, solves the problem of uneven sludge mixing here, and greatly improves anaerobic efficiency.
  • the mixing efficiency of the sludge in the digester body increases the anaerobic digestion rate of the sludge.
  • mechanical mixing is mainly used and biogas mixing is supplemented, which avoids the mixing system being too complicated.
  • Figure 1 is a schematic diagram of the longitudinal structure of an anaerobic sludge digester according to an embodiment of the present application.
  • Figure 2 is a schematic top view of the sludge anaerobic digester according to an embodiment of the present application.
  • Figure 3 is a schematic vertical cross-sectional view of a sludge anaerobic digester according to an embodiment of the present application.
  • Figure 4 is a schematic structural diagram of a biogas diffusion pipe of a sludge anaerobic digester according to an embodiment of the present application.
  • the embodiment of the present application provides a sludge anaerobic digestion tank.
  • the sludge anaerobic digestion tank includes a digestion tank.
  • the digester body 100 is generally cylindrical or oval, in this embodiment the digester body 100 is cylindrical;
  • the mechanical stirring component includes a vertical shaft mechanical stirrer 101 and a stirring blade 102.
  • the vertical shaft mechanical mixer 101 is vertically installed at the central axis of the digester body 100 and passes through the top wall of the digester body 100 for stirring sludge; the mixing blades 102 are installed on the vertical shaft mechanical mixer.
  • the biogas stirring assembly is located inside the digester body 100 and is arranged around the mechanical stirring assembly.
  • the stirring blades 102 are arranged in multiple layers along the vertical direction of the digester body 100.
  • the number of layers of the stirring blades 102 is preferably 3 to 4 layers.
  • this implementation The mixing blades 102 in the example have three layers and are evenly arranged along the vertical direction of the digester body 100 to form a multi-layer sludge stirring rotating layer to fully mix the sludge in the anaerobic digester; and/or ,
  • the mechanical stirring assembly also includes a flow guide baffle 103, which is located at the side wall of the digester body 100; and/or,
  • the guide baffle 103 is installed vertically on the side wall of the digester body 100; and/or,
  • the guide baffles 103 are evenly distributed along the side wall of the digester body 100, and there is a certain included angle between the guide baffle 103 and the side wall of the digester body 100, and the included angle is preferably 60°-120°;
  • the guide baffle 103 is arranged along the inner wall of the digester body 100, and the vertical shaft mechanical mixer 101 is used.
  • the cyclone effect locally blocks and interferes with the sludge at the diversion baffle 103, thereby forming sludge disturbance in a local area and enhancing sludge mixing near the wall of the digester. combined effect.
  • the guide baffle 103 is rectangular, and its vertical arrangement position, length and width are determined according to the stirring effect of the vertical shaft mechanical mixer 101 and the fluid simulation results; the vertical position, length and width of the guide baffle 103 are The height starts from 1/4-1/3 of the height of the digester body 100 from the bottom of the digester body 100 and ends at 1/4-1/3 of the height of the digester body 100 from the top of the digester body 100.
  • the guide baffle 103 The length is 1/2-1/3 of the height of the digester body 100.
  • the width of the guide baffle 103 is preferably in the range of 1.0m; in this way, an effective form can be formed at the top and bottom of the cylindrical digester body 100. Ground sludge circulation flow.
  • the sludge circulation power at the inner wall of the digester body 100 away from the vertical shaft mechanical mixer 101 in the middle area of the digester body 100 is poor.
  • This part of the sludge is a key area for enhanced mixing.
  • the vertical arrangement position, length and width parameters of the guide baffle 103 of the vertical shaft mechanical mixer can further guide the configuration of the guide baffle 103, so that it can play its role more effectively in actual use.
  • the biogas mixing assembly includes a biogas main pipe 200, a biogas horizontal distribution pipe 201, a biogas distribution branch pipe 204, and a biogas vertical mixing pipe.
  • the vertical biogas mixing pipe includes a biogas vertical transmission pipe 206.
  • the biogas main pipe 200 It is used to transport biogas to the biogas horizontal distribution pipe 201, and then to the biogas vertical transmission pipe 206 through the biogas distribution branch pipe 204.
  • the biogas distribution branch pipe 204 is equipped with a biogas branch control valve 205 for regulating the biogas in the vertical biogas transmission pipe 206. quantity.
  • the biogas horizontal distribution pipe 201 is arranged in an annular shape, and the biogas vertical mixing pipe is also arranged in an annular shape around the vertical shaft mechanical mixer 101.
  • the biogas is transmitted to the biogas vertical transmission pipe 206 through the biogas horizontal distribution pipe 201.
  • Multi-directional biogas circulation mixing is realized to make the sludge more fully mixed;
  • a control valve is installed on the biogas horizontal distribution pipe 201 to adjust the mixing intensity in a timely manner;
  • a biogas pipe support 208 is installed below the biogas horizontal distribution pipe, and the biogas horizontal distribution pipe It can be connected with the biogas distribution branch pipe through the biogas distribution secondary main pipe 203.
  • the biogas distribution secondary main pipe 203 is equipped with a biogas distribution secondary main pipe regulating valve 202.
  • the biogas flows into the biogas vertical transmission pipe 206 through the biogas distribution branch pipe 204.
  • the diameter of the biogas horizontal distribution pipe 201 gradually becomes smaller from the end close to the biogas main pipe 200 to the end far away from the biogas main pipe 200, and the large and small pipe sections can be connected by reducing pipes.
  • the biogas horizontal pipe adopts the above structural form. On the one hand, it can adapt to the actual flow of biogas in the biogas pipe and save pipe materials; on the other hand, the flow rate of biogas increases as the diameter of the pipe becomes smaller, thus making the biogas diffusion pipe
  • the overall gas output is uniform, maintaining the uniform stability of the entire biogas diffusion and mixing system.
  • the biogas vertical transmission pipe 206 is arranged around the vertical shaft mechanical mixer 101. There is a certain inclination angle between the biogas vertical transmission pipe 206 and the vertical shaft mechanical mixer 101. The angle should be controlled at 15°-45°. ; When the sludge anaerobic digestion tank is arranged in a columnar shape, the defective areas of mechanical stirring also present a columnar distribution in space. The setting of the vertical biogas transmission pipe 206 can fill the defects of mechanical stirring and achieve the purpose of strengthening the mixing. Improve the efficiency of anaerobic digestion.
  • the biogas vertical mixing tubes are arranged in an annular shape around the vertical shaft mechanical mixer 101, which can fully fill the weak link of mechanical mixing.
  • the distance between the vertical biogas transmission pipe 206 and the vertical shaft mechanical agitator 101 is 1/8 to 3/8 of the diameter of the digester body 100.
  • the mixing intensity in the area near the vertical shaft mechanical mixer 101 is high.
  • the middle area between the vertical shaft mechanical mixer 101 and the digester body 100 is the weak stirring area in the digester. Arranging the vertical biogas transmission pipe 206 here can achieve better results. the stirring effect.
  • the biogas vertical stirring pipe also includes a biogas vertical diffusion pipe 207.
  • the biogas diffusion pipe is arranged in the form of a vertical pipe in the sludge anaerobic digestion tank, and has a vertical axis.
  • the mechanical stirrer 101 is arranged symmetrically in a central ring shape.
  • biogas diffusion holes 209 on the biogas vertical diffusion pipe 207 there are a number of biogas diffusion holes 209 on the biogas vertical diffusion pipe 207, and the biogas vertical diffusion pipe 207 is connected with the biogas vertical transmission pipe 206 below.
  • the length of the biogas vertical diffusion pipe 207 is consistent with the length of the guide baffle 103.
  • the location of the biogas vertical diffusion pipe 207 is the weak area of mechanical stirring.
  • the length of the biogas vertical diffusion pipe 207 is consistent with the length of the guide baffle 103, which can fully fill the weak area of mechanical stirring, with strong pertinence and good mixing. The effect is good; on the other hand, it avoids the waste of pipe materials caused by excessive setting of biogas diffusion pipe sections, which is economical and has the best overall technical and economic benefits.
  • the biogas diffusion holes 209 are spaced along the vertical biogas diffusion pipe 207. distance arrangement; and/or,
  • the biogas diffusion holes 209 are evenly arranged in multiple directions along the pipe wall at the same vertical height of the biogas diffusion pipe to facilitate biogas outgas mixing from multiple directions.
  • the arrangement angle of the biogas diffusion holes 209 should be 30°-90 °, which can realize all-round mixing of vertical and horizontal spaces in the biogas mixing area, maximize the effectiveness of biogas mixing, and improve anaerobic efficiency.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Health & Medical Sciences (AREA)
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  • Molecular Biology (AREA)
  • Hydrology & Water Resources (AREA)
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  • Organic Chemistry (AREA)
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  • Treatment Of Sludge (AREA)

Abstract

The present application discloses a sludge anaerobic digestion tank. The sludge anaerobic digestion tank comprises a digestion tank body, a mechanical stirring assembly, and a biogas stirring assembly; the mechanical stirring assembly comprises a vertical shaft mechanical stirrer and stirring blades; the vertical shaft mechanical stirrer is located in the digestion tank body and used for stirring sludge; the stirring blades are arranged on the sidewall of the vertical shaft mechanical stirrer; and the biogas stirring assembly is located in the digestion tank body and arranged around the mechanical stirring assembly. By arranging the biogas stirring assembly around the mechanical stirring assembly, the present application avoids sludge from being deposited at a dead-corner weak region of the digestion tank body, solves the problem of non-uniform sludge mixing at the dead-corner weak region, greatly improves the stirring efficiency of sludge in an anaerobic digestion tank body, and improves the anaerobic digestion rate of the sludge. In addition, implementing stirring mainly by means of mechanical stirring with the assistance of biogas stirring can avoid a stirring system from being too complex.

Description

一种污泥厌氧消化池A kind of sludge anaerobic digester
本申请要求申请日为2022/3/16的中国专利申请2022102592520的优先权。本申请引用上述中国专利申请的全文。This application claims the priority of Chinese patent application 2022102592520 with a filing date of 2022/3/16. This application cites the full text of the above-mentioned Chinese patent application.
技术领域Technical field
本申请主要涉及环保技术领域，特别涉及一种污泥厌氧消化池。This application mainly relates to the field of environmental protection technology, especially an anaerobic sludge digester.
背景技术Background technique
污泥是污水处理过程有机质能量的最终去除，污水处理过程能量的发掘利用必然要从污泥着手。厌氧消化技术具备减量化、无害化、稳定化和资源化四大优势，能够在降低污泥对环境污染的同时回收能源，厌氧消化技术已成为未来污泥处置技术发展的必然趋势之一。Sludge is the final removal of organic matter energy in the sewage treatment process. The exploration and utilization of energy in the sewage treatment process must start with sludge. Anaerobic digestion technology has four major advantages: reduction, harmlessness, stabilization and resource utilization. It can reduce sludge pollution to the environment while recovering energy. Anaerobic digestion technology has become an inevitable trend in the development of sludge disposal technology in the future. one.
目前，厌氧消化池主要还是以机械搅拌为主，但是机械搅拌往往会存在污泥混合不均匀问题，使得污泥厌氧消化速率低。At present, anaerobic digesters mainly use mechanical stirring, but mechanical stirring often causes uneven mixing of sludge, resulting in a low anaerobic digestion rate of sludge.
申请内容Application content
本申请要解决的技术问题是为了克服现有技术中机械搅拌时存在污泥混合不均匀使得厌氧消化速率低的缺陷，提供一种污泥厌氧消化池。The technical problem to be solved by this application is to provide a sludge anaerobic digester in order to overcome the shortcomings in the prior art of uneven sludge mixing resulting in low anaerobic digestion rate during mechanical stirring.
本申请是通过下述技术方案来解决上述技术问题：This application solves the above technical problems through the following technical solutions:
一种污泥厌氧消化池，所述污泥厌氧消化池包括消化池本体、机械搅拌组件和沼气搅拌组件；所述机械搅拌组件包括立轴机械搅拌器和搅拌桨叶，所述立轴机械搅拌器位于所述消化池本体内部以用于搅拌污泥；所述搅拌桨叶设于所述立轴机械搅拌器的侧壁上；所述沼气搅拌组件处在所述消化池本体内部并围绕所述机械搅拌组件布置。A sludge anaerobic digester. The sludge anaerobic digester includes a digester body, a mechanical stirring component and a biogas stirring component; the mechanical stirring component includes a vertical shaft mechanical stirrer and a mixing blade. The vertical shaft mechanical stirring The device is located inside the digester body for stirring sludge; the stirring blades are provided on the side walls of the vertical shaft mechanical mixer; the biogas stirring assembly is located inside the digester body and surrounds the Mechanical mixing component layout.
在上述技术方案中，在机械搅拌组件的周围设置沼气搅拌组件，避免了 污泥沉积到消化池本体的死角薄弱区域处，解决此处污泥混合不均匀问题，极大地提升了厌氧消化池本体内污泥的搅拌效率，提高了污泥的厌氧消化速率。此外，以机械搅拌为主，沼气搅拌为辅，避免了搅拌***过于复杂。In the above technical solution, a biogas stirring component is arranged around the mechanical stirring component to avoid The sludge is deposited in the dead-end weak area of the digester body, which solves the problem of uneven sludge mixing here, greatly improves the mixing efficiency of the sludge in the anaerobic digester body, and increases the anaerobic digestion rate of the sludge. In addition, mechanical mixing is mainly used and biogas mixing is supplemented, which avoids the mixing system being too complicated.
进一步地，所述搅拌桨叶沿着所述消化池本体的竖向方向多层设置；和/或，Further, the stirring blades are arranged in multiple layers along the vertical direction of the digester body; and/or,
所述机械搅拌组件还包括导流挡板，所述导流挡板设于所述消化池本体侧壁处；和/或，The mechanical stirring assembly also includes a flow guide baffle, which is provided at the side wall of the digester body; and/or,
所述导流挡板垂直安装于所述消化池本体侧壁；和/或，The flow guide baffle is installed vertically on the side wall of the digester body; and/or,
所述导流挡板沿所述消化池本体侧壁均匀分布，所述导流挡板与所述消化池本体侧壁之间具有一定夹角。The flow guide baffles are evenly distributed along the side walls of the digester tank body, and there is a certain angle between the flow guide baffles and the side walls of the digester tank body.
在上述技术方案中，每层桨叶作为搅拌中心，会形成污泥搅拌旋转层，设置多层搅拌桨叶，在整个消化池本体的竖向上，会形成多层污泥搅拌旋转层，从而实现对消化池本体内的污泥进行较为充分的混合；立轴机械式搅拌器桨叶直径有限，位于消化池本体内壁附近的污泥搅拌强度低，混合效果差，沿消化池本体内壁布置导流挡板，利用立轴机械搅拌器的旋流作用，在导流挡板处对污泥进行局部阻挡干扰，从而形成局部区域的污泥扰动，增强消化池池壁附近污泥混合效果。In the above technical solution, each layer of blades serves as the stirring center to form a sludge stirring and rotating layer. Multiple layers of stirring blades are provided to form multiple layers of sludge stirring and rotating layers in the vertical direction of the entire digester body, thereby achieving Mix the sludge in the digester body more fully; the diameter of the vertical shaft mechanical mixer blade is limited, the sludge near the inner wall of the digester body has low mixing intensity, and the mixing effect is poor. A guide baffle is arranged along the inner wall of the digester body. , using the swirling effect of the vertical shaft mechanical mixer to locally block and interfere with the sludge at the diversion baffle, thereby forming local area sludge disturbance and enhancing the sludge mixing effect near the wall of the digester.
进一步地，所述导流挡板的竖向高度自距所述消化池本体底部向上1/4-1/3所述消化池本体高度起，至距所述消化池本体顶部1/4-1/3所述消化池本体高度处结束，所述导流挡板的长度为1/2-1/3所述消化池本体高度。Further, the vertical height of the guide baffle starts from 1/4-1/3 of the height of the digester body from the bottom of the digester body to 1/4-1 of the top of the digester body. It ends at /3 the height of the digester body, and the length of the guide baffle is 1/2-1/3 of the height of the digester body.
在上述技术方案中，采用上述布置形式，精确了导流挡板的有效作用范围，使其在实际使用中更加有效的发挥其作用。In the above technical solution, the above arrangement is adopted to accurately define the effective range of the guide baffle, allowing it to play its role more effectively in actual use.
进一步地，所述沼气搅拌组件包括沼气总管、沼气水平分配管、沼气分配支管、沼气竖向搅拌管，所述沼气竖向搅拌管包括沼气竖向传输管，所述沼气总管用于输送沼气至所述沼气水平分配管，再经所述沼气分配支管至所述沼气竖向传输管，所述沼气分配支管上安有沼气分配支管控制阀，用于调 控所述沼气竖向传输管内的沼气量。Further, the biogas mixing assembly includes a biogas main pipe, a biogas horizontal distribution pipe, a biogas distribution branch pipe, and a biogas vertical mixing pipe. The biogas vertical mixing pipe includes a biogas vertical transmission pipe. The biogas main pipe is used to transport biogas to The biogas horizontal distribution pipe then passes through the biogas distribution branch pipe to the biogas vertical transmission pipe. A biogas distribution branch control valve is installed on the biogas distribution branch pipe for regulating Control the amount of biogas in the vertical biogas transmission pipe.
在上述技术方案中，沼气经沼气水平分配管传输至沼气竖向管，可以实现多方位的沼气循环搅拌，使得污泥混合更充分；在沼气水平分配管上安装控制阀，可以适时调整搅拌强度。In the above technical solution, the biogas is transmitted to the vertical biogas pipe through the biogas horizontal distribution pipe, which can realize multi-directional biogas circulation mixing and make the sludge more fully mixed; a control valve is installed on the biogas horizontal distribution pipe to adjust the mixing intensity in a timely manner. .
进一步地，所述沼气水平分配管的管径从靠近所述沼气总管端至远离所述沼气总管端逐渐变小。Further, the pipe diameter of the biogas horizontal distribution pipe gradually becomes smaller from the end close to the biogas main pipe to the end far away from the biogas main pipe.
在上述技术方案中，沼气水平管采用上述的结构形式，一方面能够适应沼气在沼气管中的实际流量，并节省管材；另一方面，沼气的流速随着管路的直径变小而增大，从而使得沼气扩散管整体的出气量均匀，维持整个沼气扩散搅拌***的均匀稳定性。In the above technical solution, the biogas horizontal pipe adopts the above structural form. On the one hand, it can adapt to the actual flow rate of biogas in the biogas pipe and save pipe materials; on the other hand, the flow rate of biogas increases as the diameter of the pipe becomes smaller. , thereby making the overall gas output of the biogas diffusion pipe uniform and maintaining the uniform stability of the entire biogas diffusion and mixing system.
进一步地，所述沼气竖向传输管围绕所述立轴机械搅拌器进行布置，所述沼气竖向传输管与所述立轴机械搅拌器间具有一定倾角。Further, the biogas vertical transmission pipe is arranged around the vertical shaft mechanical agitator, and there is a certain inclination angle between the biogas vertical transmission pipe and the vertical shaft mechanical agitator.
在上述技术方案中，机械搅拌的缺陷区域在空间上呈现柱形分布，在立轴机械搅拌器的周围设置沼气竖向传输管，可以弥补该区域搅拌不均的缺陷，从而提高厌氧消化效率。In the above technical solution, the defective area of mechanical stirring is spatially distributed in a cylindrical shape, and vertical biogas transmission pipes are installed around the vertical shaft mechanical stirrer, which can make up for the defect of uneven stirring in this area, thereby improving the efficiency of anaerobic digestion.
进一步地，所述沼气竖向传输管距离所述立轴机械搅拌器的距离为1/8～3/8所述消化池本体长度。Further, the distance between the vertical biogas transmission pipe and the vertical shaft mechanical stirrer is 1/8 to 3/8 of the length of the digester body.
在上述技术方案中，立轴机械搅拌器附近区域的搅拌强度大，立轴机械搅拌器与消化池本体间的中间区域为消化池内搅拌薄弱区，将沼气竖向传输管布置在此处，可以起到更好的搅拌作用。In the above technical solution, the mixing intensity in the area near the vertical shaft mechanical mixer is high, and the middle area between the vertical shaft mechanical mixer and the digester body is the weak stirring area in the digester. Arranging the vertical biogas transmission pipe here can achieve Better stirring action.
进一步地，所述沼气竖向搅拌管还包括沼气竖向扩散管，所述沼气竖向扩散管上具有若干沼气扩散孔，所述沼气竖向扩散管与所述沼气竖向传输管相连通。Furthermore, the vertical biogas mixing pipe also includes a vertical biogas diffusion pipe, the vertical biogas diffusion pipe has a plurality of biogas diffusion holes, and the vertical biogas diffusion pipe is connected with the vertical transmission pipe of biogas.
在上述技术方案中，沼气经沼气扩散孔流出，使得各处的沼气分布更均匀，沼气搅拌的效果更好，更进一步的提高厌氧效率。In the above technical solution, the biogas flows out through the biogas diffusion holes, making the biogas distribution more uniform everywhere, the biogas mixing effect is better, and the anaerobic efficiency is further improved.
进一步地，所述沼气竖向扩散管的长度与所述导流挡板的长度一致。 Further, the length of the biogas vertical diffusion pipe is consistent with the length of the guide baffle.
在上述技术方案中，沼气竖向扩散管的设置位置即为机械搅拌的薄弱区域，沼气竖向扩散管段的长度与导流挡板的长度一致，可充分填补机械搅拌的薄弱区域，针对性强，混合效果佳；另一方面又避免沼气扩散管段的过度设置所引起的管材浪费，经济节约，整体技术经济效益最佳。In the above technical solution, the location of the biogas vertical diffusion pipe is the weak area of mechanical stirring. The length of the vertical biogas diffusion pipe section is consistent with the length of the guide baffle, which can fully fill the weak area of mechanical stirring and is highly targeted. , the mixing effect is good; on the other hand, it avoids the waste of pipe materials caused by excessive setting of biogas diffusion pipe sections, which is economical and has the best overall technical and economic benefits.
进一步地，所述沼气扩散孔沿所述沼气竖向扩散管等间距布置；和/或，Further, the biogas diffusion holes are arranged at equal intervals along the vertical biogas diffusion pipe; and/or,
所述沼气扩散孔在所述沼气扩散管同一竖向高度处沿管壁在多方向均匀布置。The biogas diffusion holes are evenly arranged in multiple directions along the pipe wall at the same vertical height of the biogas diffusion pipe.
在上述技术方案中，沼气竖向扩散管上沼气扩散孔呈现竖向多层布置，并在同一高度处沿管壁多方向布置，可实现沼气搅拌区域竖向和横向空间全方位搅拌，最大程度发挥沼气搅拌的功效作用，提高厌氧效率。In the above technical solution, the biogas diffusion holes on the biogas vertical diffusion pipe are arranged in vertical multi-layers, and are arranged in multiple directions along the pipe wall at the same height, which can realize all-round mixing of the vertical and horizontal spaces in the biogas mixing area to the greatest extent Give full play to the efficacy of biogas mixing and improve anaerobic efficiency.
本申请的积极进步效果在于：通过在机械搅拌组件的周围设置沼气搅拌组件，避免污泥沉积到消化池本体的死角薄弱区域处，解决此处污泥混合不均匀问题，极大地提升了厌氧消化池本体内污泥的搅拌效率，提高了污泥的厌氧消化速率。此外，以机械搅拌为主，沼气搅拌为辅，避免了搅拌***过于复杂。The positive and progressive effect of this application is that by setting up a biogas mixing component around the mechanical mixing component, it prevents sludge from depositing in the weak areas of the dead corners of the digester body, solves the problem of uneven sludge mixing here, and greatly improves anaerobic efficiency. The mixing efficiency of the sludge in the digester body increases the anaerobic digestion rate of the sludge. In addition, mechanical mixing is mainly used and biogas mixing is supplemented, which avoids the mixing system being too complicated.
附图说明Description of the drawings
图1为本申请一实施例的污泥厌氧消化池的纵向结构示意图。Figure 1 is a schematic diagram of the longitudinal structure of an anaerobic sludge digester according to an embodiment of the present application.
图2为本申请一实施例的污泥厌氧消化池的俯视结构示意图。Figure 2 is a schematic top view of the sludge anaerobic digester according to an embodiment of the present application.
图3为本申请一实施例的污泥厌氧消化池的竖向剖面示意图。Figure 3 is a schematic vertical cross-sectional view of a sludge anaerobic digester according to an embodiment of the present application.
图4为本申请一实施例的污泥厌氧消化池的沼气扩散管的结构示意图。Figure 4 is a schematic structural diagram of a biogas diffusion pipe of a sludge anaerobic digester according to an embodiment of the present application.
具体实施方式Detailed ways
下面通过实施例的方式进一步说明本申请，但并不因此将本申请限制在的实施例范围之中。The present application is further described below by means of examples, but the present application is not limited to the scope of the examples.
本申请实施例提供了一种污泥厌氧消化池，污泥厌氧消化池包括消化池 本体100、机械搅拌组件和沼气搅拌组件；消化池本体100一般是圆柱形或卵形，本实施例中消化池本体100为圆柱形；机械搅拌组件包括立轴机械搅拌器101和搅拌桨叶102，如图1所示，立轴机械搅拌器101垂直安装于消化池本体100内部中心轴处，并穿过消化池本体100的顶壁以用于搅拌污泥；搅拌桨叶102设于立轴机械搅拌器101的侧壁上；沼气搅拌组件处在消化池本体100内部并围绕机械搅拌组件布置。The embodiment of the present application provides a sludge anaerobic digestion tank. The sludge anaerobic digestion tank includes a digestion tank. Body 100, mechanical stirring component and biogas stirring component; the digester body 100 is generally cylindrical or oval, in this embodiment the digester body 100 is cylindrical; the mechanical stirring component includes a vertical shaft mechanical stirrer 101 and a stirring blade 102. As shown in Figure 1, the vertical shaft mechanical mixer 101 is vertically installed at the central axis of the digester body 100 and passes through the top wall of the digester body 100 for stirring sludge; the mixing blades 102 are installed on the vertical shaft mechanical mixer. On the side wall of 101; the biogas stirring assembly is located inside the digester body 100 and is arranged around the mechanical stirring assembly.
通过在消化池本体100内同步设置机械搅拌组件和沼气搅拌组件，使两者优势互补；以机械搅拌为主，从***设计和设备配置上较简易，避免全部依赖沼气搅拌带来的搅拌***过于复杂，运行不便的问题；同时，作为机械搅拌的增强补充，采用沼气循环进行局部沼气搅拌，可用来填补机械搅拌的搅拌死角和搅拌薄弱区域；机械搅拌和沼气扩散有机集合，可起到充分混合消化池内污泥的目的，提高厌氧消化过程的效率，提高厌氧消化池沼气产气速率、产气量和产气质量。By synchronously setting up the mechanical stirring component and the biogas stirring component in the digester body 100, the advantages of the two complement each other; with mechanical stirring as the main component, the system design and equipment configuration are relatively simple, and the mixing system that relies entirely on biogas mixing can be avoided. Complex and inconvenient operation problems; at the same time, as an enhanced supplement to mechanical mixing, biogas circulation is used for local biogas mixing, which can be used to fill the dead ends and weak areas of mechanical mixing; the organic combination of mechanical stirring and biogas diffusion can achieve full mixing The purpose of the sludge in the digester is to improve the efficiency of the anaerobic digestion process, and to increase the gas production rate, gas production volume and gas production quality of the anaerobic digester.
作为一种较佳地实施方式，搅拌桨叶102沿着消化池本体100的竖向方向多层设置，搅拌桨叶102分层数宜按3～4层考虑；如图1所示，本实施例中的搅拌桨叶102为3层，并沿着消化池本体100竖向方向均匀布置，以形成多层污泥搅拌旋转层，对厌氧消化池内污泥进行较为的充分混合；和/或，As a preferred embodiment, the stirring blades 102 are arranged in multiple layers along the vertical direction of the digester body 100. The number of layers of the stirring blades 102 is preferably 3 to 4 layers. As shown in Figure 1, this implementation The mixing blades 102 in the example have three layers and are evenly arranged along the vertical direction of the digester body 100 to form a multi-layer sludge stirring rotating layer to fully mix the sludge in the anaerobic digester; and/or ,
机械搅拌组件还包括导流挡板103，导流挡板103设于消化池本体100侧壁处；和/或，The mechanical stirring assembly also includes a flow guide baffle 103, which is located at the side wall of the digester body 100; and/or,
导流挡板103垂直安装于消化池本体100侧壁；和/或，The guide baffle 103 is installed vertically on the side wall of the digester body 100; and/or,
导流挡板103沿消化池本体100侧壁均匀分布，导流挡板103与消化池本体100侧壁之间具有一定夹角，夹角60°-120°为宜；The guide baffles 103 are evenly distributed along the side wall of the digester body 100, and there is a certain included angle between the guide baffle 103 and the side wall of the digester body 100, and the included angle is preferably 60°-120°;
由于立轴机械式搅拌器桨叶102直径有限，对位于消化池本体100内壁附近的污泥搅拌强度低，混合效果差，沿消化池本体100内壁布置导流挡板103，利用立轴机械搅拌器101的旋流作用，在导流挡板103处对污泥进行局部阻挡干扰，从而形成局部区域的污泥扰动，增强消化池池壁附近污泥混 合效果。Due to the limited diameter of the vertical shaft mechanical mixer blade 102, the mixing intensity of the sludge near the inner wall of the digester body 100 is low and the mixing effect is poor. The guide baffle 103 is arranged along the inner wall of the digester body 100, and the vertical shaft mechanical mixer 101 is used. The cyclone effect locally blocks and interferes with the sludge at the diversion baffle 103, thereby forming sludge disturbance in a local area and enhancing sludge mixing near the wall of the digester. combined effect.
作为一种较佳地实施方式，导流挡板103为长方形，其竖向布置位置、长度和宽度根据立轴机械搅拌器101搅拌效果和流体模拟结果进行取值；导流挡板103的竖向高度自距消化池本体100底部向上1/4-1/3消化池本体100高度起，至距消化池本体100顶部1/4-1/3消化池本体100高度处结束，导流挡板103的长度为1/2-1/3消化池本体100高度，本实施例中，导流挡板103的宽度取值范围宜为1.0m；这样可在圆柱形消化池本体100顶部和底部形成有效地污泥循环流。与消化池本体100顶部和底部相比，消化池本体100中间区域远离立轴机械搅拌器101的消化池本体100内壁处，污泥循环动力差，此部分污泥是强化混合的重点区域，通过规定立轴机械式搅拌器的导流挡板103的竖向布置位置和长度及宽度参数，可进一步指导导流挡板103的配置，从而在实际使用中更加有效的发挥其作用。As a preferred embodiment, the guide baffle 103 is rectangular, and its vertical arrangement position, length and width are determined according to the stirring effect of the vertical shaft mechanical mixer 101 and the fluid simulation results; the vertical position, length and width of the guide baffle 103 are The height starts from 1/4-1/3 of the height of the digester body 100 from the bottom of the digester body 100 and ends at 1/4-1/3 of the height of the digester body 100 from the top of the digester body 100. The guide baffle 103 The length is 1/2-1/3 of the height of the digester body 100. In this embodiment, the width of the guide baffle 103 is preferably in the range of 1.0m; in this way, an effective form can be formed at the top and bottom of the cylindrical digester body 100. Ground sludge circulation flow. Compared with the top and bottom of the digester body 100, the sludge circulation power at the inner wall of the digester body 100 away from the vertical shaft mechanical mixer 101 in the middle area of the digester body 100 is poor. This part of the sludge is a key area for enhanced mixing. According to regulations The vertical arrangement position, length and width parameters of the guide baffle 103 of the vertical shaft mechanical mixer can further guide the configuration of the guide baffle 103, so that it can play its role more effectively in actual use.
作为一种较佳地实施方式，沼气搅拌组件包括沼气总管200、沼气水平分配管201、沼气分配支管204、沼气竖向搅拌管，沼气竖向搅拌管包括沼气竖向传输管206，沼气总管200用于输送沼气至沼气水平分配管201，再经沼气分配支管204至沼气竖向传输管206，沼气分配支管204上安有沼气支管控制阀205，用于调控沼气竖向传输管206内的沼气量。As a preferred embodiment, the biogas mixing assembly includes a biogas main pipe 200, a biogas horizontal distribution pipe 201, a biogas distribution branch pipe 204, and a biogas vertical mixing pipe. The vertical biogas mixing pipe includes a biogas vertical transmission pipe 206. The biogas main pipe 200 It is used to transport biogas to the biogas horizontal distribution pipe 201, and then to the biogas vertical transmission pipe 206 through the biogas distribution branch pipe 204. The biogas distribution branch pipe 204 is equipped with a biogas branch control valve 205 for regulating the biogas in the vertical biogas transmission pipe 206. quantity.
如图2-3所示，沼气水平分配管201呈环形布置，且沼气竖向搅拌管也围绕立轴机械搅拌器101环形布置，沼气经沼气水平分配管201传输至沼气竖向传输管206，可以实现多方位的沼气循环搅拌，使得污泥混合更充分；在沼气水平分配管201上安装控制阀，可以适时调整搅拌强度；沼气水平分配管的下方安装有沼气管支座208，沼气水平分配管与沼气分配支管之间可通过沼气分配次干管203连通，沼气分配次干管203上安有沼气分配次干管调节阀202，沼气经沼气分配支管204流入沼气竖向传输管206。As shown in Figure 2-3, the biogas horizontal distribution pipe 201 is arranged in an annular shape, and the biogas vertical mixing pipe is also arranged in an annular shape around the vertical shaft mechanical mixer 101. The biogas is transmitted to the biogas vertical transmission pipe 206 through the biogas horizontal distribution pipe 201. Multi-directional biogas circulation mixing is realized to make the sludge more fully mixed; a control valve is installed on the biogas horizontal distribution pipe 201 to adjust the mixing intensity in a timely manner; a biogas pipe support 208 is installed below the biogas horizontal distribution pipe, and the biogas horizontal distribution pipe It can be connected with the biogas distribution branch pipe through the biogas distribution secondary main pipe 203. The biogas distribution secondary main pipe 203 is equipped with a biogas distribution secondary main pipe regulating valve 202. The biogas flows into the biogas vertical transmission pipe 206 through the biogas distribution branch pipe 204.
作为一种较佳地实施方式，沼气水平分配管201的管径从靠近沼气总管200端至远离沼气总管200端逐渐变小，大小管段之间可通过减缩管连接。 As a preferred embodiment, the diameter of the biogas horizontal distribution pipe 201 gradually becomes smaller from the end close to the biogas main pipe 200 to the end far away from the biogas main pipe 200, and the large and small pipe sections can be connected by reducing pipes.
沼气水平管采用上述的结构形式，一方面能够适应沼气在沼气管中的实际流量，并节省管材；另一方面，沼气的流速随着管路的直径变小而增大，从而使得沼气扩散管整体的出气量均匀，维持整个沼气扩散搅拌***的均匀稳定性。The biogas horizontal pipe adopts the above structural form. On the one hand, it can adapt to the actual flow of biogas in the biogas pipe and save pipe materials; on the other hand, the flow rate of biogas increases as the diameter of the pipe becomes smaller, thus making the biogas diffusion pipe The overall gas output is uniform, maintaining the uniform stability of the entire biogas diffusion and mixing system.
作为一种较佳地实施方式，沼气竖向传输管206围绕立轴机械搅拌器101进行布置，沼气竖向传输管206与立轴机械搅拌器101间具有一定倾角，角度宜控制在15°-45°；污泥厌氧消化池成柱形布置时，机械搅拌的缺陷区域在空间上亦呈现柱形分布，沼气竖向传输管206的设置可以填补机械搅拌的缺陷，起到强化搅拌的目的，从而提高厌氧消化的效率。沼气竖向搅拌管围绕立轴机械搅拌器101环形布置，可充分填补机械搅拌的薄弱环节。As a preferred implementation method, the biogas vertical transmission pipe 206 is arranged around the vertical shaft mechanical mixer 101. There is a certain inclination angle between the biogas vertical transmission pipe 206 and the vertical shaft mechanical mixer 101. The angle should be controlled at 15°-45°. ; When the sludge anaerobic digestion tank is arranged in a columnar shape, the defective areas of mechanical stirring also present a columnar distribution in space. The setting of the vertical biogas transmission pipe 206 can fill the defects of mechanical stirring and achieve the purpose of strengthening the mixing. Improve the efficiency of anaerobic digestion. The biogas vertical mixing tubes are arranged in an annular shape around the vertical shaft mechanical mixer 101, which can fully fill the weak link of mechanical mixing.
作为一种较佳地实施方式，沼气竖向传输管206距离立轴机械搅拌器101的距离为1/8～3/8消化池本体100直径。立轴机械搅拌器101附近区域的搅拌强度大，立轴机械搅拌器101与消化池本体100间的中间区域为消化池内搅拌薄弱区，将沼气竖向传输管206布置在此处，可以起到更好的搅拌作用。As a preferred embodiment, the distance between the vertical biogas transmission pipe 206 and the vertical shaft mechanical agitator 101 is 1/8 to 3/8 of the diameter of the digester body 100. The mixing intensity in the area near the vertical shaft mechanical mixer 101 is high. The middle area between the vertical shaft mechanical mixer 101 and the digester body 100 is the weak stirring area in the digester. Arranging the vertical biogas transmission pipe 206 here can achieve better results. the stirring effect.
作为一种较佳地实施方式，沼气竖向搅拌管还包括沼气竖向扩散管207，如图2-3所示，沼气扩散管以立管形式布置在污泥厌氧消化池内，并以立轴机械搅拌器101成中心环形对称布置。As a preferred implementation mode, the biogas vertical stirring pipe also includes a biogas vertical diffusion pipe 207. As shown in Figure 2-3, the biogas diffusion pipe is arranged in the form of a vertical pipe in the sludge anaerobic digestion tank, and has a vertical axis. The mechanical stirrer 101 is arranged symmetrically in a central ring shape.
沼气竖向扩散管207上具有若干沼气扩散孔209，沼气竖向扩散管207与沼气竖向传输管206相下方连通。There are a number of biogas diffusion holes 209 on the biogas vertical diffusion pipe 207, and the biogas vertical diffusion pipe 207 is connected with the biogas vertical transmission pipe 206 below.
作为一种较佳地实施方式，沼气竖向扩散管207的长度与导流挡板103的长度一致。沼气竖向扩散管207的设置位置即为机械搅拌的薄弱区域，沼气竖向扩散管207段的长度与导流挡板103的长度一致，可充分填补机械搅拌的薄弱区域，针对性强，混合效果佳；另一方面又避免沼气扩散管段的过度设置所引起的管材浪费，经济节约，整体技术经济效益最佳。As a preferred implementation, the length of the biogas vertical diffusion pipe 207 is consistent with the length of the guide baffle 103. The location of the biogas vertical diffusion pipe 207 is the weak area of mechanical stirring. The length of the biogas vertical diffusion pipe 207 is consistent with the length of the guide baffle 103, which can fully fill the weak area of mechanical stirring, with strong pertinence and good mixing. The effect is good; on the other hand, it avoids the waste of pipe materials caused by excessive setting of biogas diffusion pipe sections, which is economical and has the best overall technical and economic benefits.
作为一种较佳地实施方式，沼气扩散孔209沿沼气竖向扩散管207等间 距布置；和/或，As a preferred embodiment, the biogas diffusion holes 209 are spaced along the vertical biogas diffusion pipe 207. distance arrangement; and/or,
如图4所示，沼气扩散孔209在沼气扩散管同一竖向高度处沿管壁在多方向均匀布置，以便于从多方位进行沼气出气搅拌，沼气扩散孔209布置角度宜为30°-90°，可实现沼气搅拌区域竖向和横向空间全方位搅拌，最大程度发挥沼气搅拌的功效作用，提高厌氧效率。As shown in Figure 4, the biogas diffusion holes 209 are evenly arranged in multiple directions along the pipe wall at the same vertical height of the biogas diffusion pipe to facilitate biogas outgas mixing from multiple directions. The arrangement angle of the biogas diffusion holes 209 should be 30°-90 °, which can realize all-round mixing of vertical and horizontal spaces in the biogas mixing area, maximize the effectiveness of biogas mixing, and improve anaerobic efficiency.
虽然以上描述了本申请的具体实施方式，但是本领域的技术人员应当理解，这仅是举例说明，本申请的保护范围是由所附权利要求书限定的。本领域的技术人员在不背离本申请的原理和实质的前提下，可以对这些实施方式做出多种变更或修改，但这些变更和修改均落入本申请的保护范围。 Although specific embodiments of the present application have been described above, those skilled in the art will understand that these are only examples, and the protection scope of the present application is defined by the appended claims. Those skilled in the art can make various changes or modifications to these embodiments without departing from the principles and essence of the present application, but these changes and modifications all fall within the protection scope of the present application.

Claims (10)

  1. 一种污泥厌氧消化池，其特征在于，所述污泥厌氧消化池包括消化池本体、机械搅拌组件和沼气搅拌组件；A sludge anaerobic digestion tank, characterized in that the sludge anaerobic digestion tank includes a digester body, a mechanical stirring component and a biogas stirring component;
    所述机械搅拌组件包括立轴机械搅拌器和搅拌桨叶，所述立轴机械搅拌器位于所述消化池本体内部以用于搅拌污泥；所述搅拌桨叶设于所述立轴机械搅拌器的侧壁上；The mechanical mixing assembly includes a vertical shaft mechanical mixer and a mixing blade. The vertical shaft mechanical mixer is located inside the digester body for stirring sludge; the mixing blade is located on the side of the vertical shaft mechanical mixer. on the wall;
    所述沼气搅拌组件处在所述消化池本体内部并围绕所述机械搅拌组件布置。The biogas stirring component is located inside the digester body and arranged around the mechanical stirring component.
  2. 如权利要求1所述的污泥厌氧消化池，其特征在于，所述搅拌桨叶沿着所述消化池本体的竖向方向多层设置；和/或，The sludge anaerobic digester according to claim 1, wherein the stirring blades are arranged in multiple layers along the vertical direction of the digester body; and/or,
    所述机械搅拌组件还包括导流挡板，所述导流挡板设于所述消化池本体侧壁处；和/或，The mechanical stirring assembly also includes a flow guide baffle, which is provided at the side wall of the digester body; and/or,
    所述导流挡板垂直安装于所述消化池本体侧壁；和/或，The flow guide baffle is installed vertically on the side wall of the digester body; and/or,
    所述导流挡板沿所述消化池本体侧壁均匀分布，所述导流挡板与所述消化池本体侧壁之间具有一定夹角。The flow guide baffles are evenly distributed along the side walls of the digester tank body, and there is a certain angle between the flow guide baffles and the side walls of the digester tank body.
  3. 如权利要求2所述的污泥厌氧消化池，其特征在于，所述导流挡板的竖向高度自距所述消化池本体底部向上1/4-1/3所述消化池本体高度起，至距所述消化池本体的顶部1/4-1/3所述消化池本体高度处结束，所述导流挡板的长度为1/2-1/3所述消化池本体高度。The sludge anaerobic digester according to claim 2, wherein the vertical height of the guide baffle is 1/4-1/3 of the height of the digester body from the bottom of the digester body upward. Starting from the top of the digester body, it ends at 1/4-1/3 of the height of the digester body. The length of the guide baffle is 1/2-1/3 of the height of the digester body.
  4. 如权利要求2或3所述的污泥厌氧消化池，其特征在于，所述沼气搅拌组件包括沼气总管、沼气水平分配管、沼气分配支管、沼气竖向搅拌管，所述沼气竖向搅拌管包括沼气竖向传输管，所述沼气总管用于输送沼气至所述沼气水平分配管，再经所述沼气分配支管至所述沼气竖向传输管，所述沼气分配支管上安有沼气分配支管控制阀，用于调控所述沼气竖向传输管内的沼气量。 The sludge anaerobic digester according to claim 2 or 3, characterized in that the biogas stirring assembly includes a biogas main pipe, a biogas horizontal distribution pipe, a biogas distribution branch pipe, and a biogas vertical mixing pipe, and the biogas vertical mixing pipe The pipe includes a biogas vertical transmission pipe, and the biogas main pipe is used to transport biogas to the biogas horizontal distribution pipe, and then to the biogas vertical transmission pipe through the biogas distribution branch pipe. The biogas distribution branch pipe is equipped with a biogas distribution pipe. A branch pipe control valve is used to regulate the amount of biogas in the vertical biogas transmission pipe.
  5. 如权利要求4所述的污泥厌氧消化池，其特征在于，所述沼气水平分配管的管径从靠近所述沼气总管端至远离所述沼气总管端逐渐变小。The sludge anaerobic digester of claim 4, wherein the diameter of the horizontal biogas distribution pipe gradually becomes smaller from the end close to the biogas main pipe to the end far away from the biogas main pipe.
  6. 如权利要求4或5所述的污泥厌氧消化池，其特征在于，所述沼气竖向传输管围绕所述立轴机械搅拌器进行布置，所述沼气竖向传输管与所述立轴机械搅拌器间具有一定倾角。The sludge anaerobic digester according to claim 4 or 5, wherein the vertical biogas transmission pipe is arranged around the vertical shaft mechanical agitator, and the vertical biogas transmission pipe is in contact with the vertical shaft mechanical agitator. There is a certain inclination angle between the vessels.
  7. 如权利要求4-6中任意一项所述的污泥厌氧消化池，其特征在于，所述沼气竖向传输管距离所述立轴机械搅拌器的距离为1/8-3/8所述消化池本体长度。The sludge anaerobic digester according to any one of claims 4 to 6, characterized in that the distance between the vertical biogas transmission pipe and the vertical shaft mechanical agitator is 1/8-3/8. The length of the digester body.
  8. 如权利要求4-7中任意一项所述的污泥厌氧消化池，其特征在于，所述沼气竖向搅拌管还包括沼气竖向扩散管，所述沼气竖向扩散管上具有若干沼气扩散孔，所述沼气竖向扩散管与所述沼气竖向传输管相连通。The sludge anaerobic digester according to any one of claims 4 to 7, characterized in that the vertical biogas stirring pipe also includes a vertical diffusion pipe of biogas, and the vertical diffusion pipe of biogas has a plurality of biogas Diffusion hole, the vertical diffusion pipe of biogas is connected with the vertical transmission pipe of biogas.
  9. 如权利要求8所述的污泥厌氧消化池，其特征在于，所述沼气竖向扩散管的长度与所述导流挡板的长度一致。The sludge anaerobic digester according to claim 8, wherein the length of the vertical biogas diffusion pipe is consistent with the length of the guide baffle.
  10. 如权利要求8或9所述的污泥厌氧消化池，其特征在于，所述沼气扩散孔沿所述沼气竖向扩散管等间距布置；和/或，The sludge anaerobic digester according to claim 8 or 9, wherein the biogas diffusion holes are arranged at equal intervals along the biogas vertical diffusion pipe; and/or,
    所述沼气扩散孔在所述沼气扩散管同一竖向高度处沿管壁在多方向均匀布置。 The biogas diffusion holes are evenly arranged in multiple directions along the pipe wall at the same vertical height of the biogas diffusion pipe.
PCT/CN2023/074374 2022-03-16 2023-02-03 Sludge anaerobic digestion tank WO2023173952A1 (en)

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