Water distribution system and anaerobic reactor

Abstract

The utility model provides a water distribution system and an anaerobic reactor, the water distribution system comprises a tank body; two water distribution structures, respectively arranged in the tank body, the two water distribution structures respectively comprise a plurality of groups of water distribution pipelines arranged in sequence at intervals, each group of water distribution pipelines comprises at least three water distribution pipe sections, each water distribution pipe section is provided with a plurality of nozzles, the plurality of nozzles are arranged at intervals along the extension direction of the water distribution pipe section, so that the liquid flowing into the water distribution pipe section is sprayed out from the plurality of nozzles; a detection structure, respectively connected to the two water distribution structures, for detecting the load value in the water distribution structure; wherein a valve assembly is provided on each water distribution pipe section, so as to detect the load value in the water distribution structure through the detection structure, and control the valve assembly on the corresponding water distribution pipe section in at least three water distribution pipe sections to open according to the detected load value, so as to solve the problem of low efficiency of the anaerobic reactor in treating wastewater due to uneven water distribution of the water distributor under different loads in the prior art.

Description

Technical Field

[0001] The utility model relates to the technical field of wastewater anaerobic water distributors, in particular to a water distribution system and an anaerobic reactor. Background Art

[0002] Anaerobic biological treatment technology for wastewater refers to the process of converting organic matter into methane and carbon dioxide under anaerobic conditions. Generally, anaerobic reactions are divided into four stages: hydrolysis stage, acidification stage, acetogenesis stage and methanogenesis stage. During this process, the metabolic processes of different microorganisms influence and restrict each other, forming a complex ecosystem, which is ultimately converted into methane, carbon dioxide, water, etc.

[0003] At present, with the development of industrialization, more and more industrial high-pollutant wastewater uses anaerobic biological treatment technology to treat high-concentration pollutant wastewater. Anaerobic reactors have also experienced rapid development, from early digesters to later upflow contact anaerobic reactors to the current high-speed expanded sludge bed anaerobic reactors, which further improve the efficiency of anaerobic reactors and enable them to efficiently treat high-pollutant wastewater. The general anaerobic reactor consists of a tank, a water distributor, and a three-phase separator. In order to achieve efficient degradation of wastewater pollutants, the water distributor becomes a core part of the anaerobic reactor, and the wastewater enters the bottom of the reactor through the water distributor.

[0004] However, since the water distributor of the anaerobic reactor is mainly divided into one-tube multi-porous water distribution and one-tube one-hole water distribution, the one-tube multi-porous water distribution is to horizontally inlet water from the bottom of the anaerobic reactor. This method often causes the water pressure at both ends of the pipe to be different under different loads under the same pipe diameter because the water inlet pipe is linear, resulting in different water outlet rates of each water distribution hole, resulting in uneven water distribution and blockage in the entire anaerobic reactor; the one-tube one-hole water distribution is a point water distribution, which vertically inlets water from the top of the anaerobic reactor. This water inlet method effectively solves the sludge blockage problem, but there is still uneven water distribution, which leads to insufficient contact between wastewater and granular sludge, affecting the treatment efficiency of the anaerobic reactor. Utility Model Content

[0005] The main purpose of the utility model is to provide a water distribution system and an anaerobic reactor to solve the problem that the water distributor in the prior art distributes water unevenly under different loads, resulting in low efficiency of the anaerobic reactor in treating wastewater.

[0006] In order to achieve the above-mentioned purpose, the utility model provides a water distribution system, comprising: a tank body; two water distribution structures, respectively arranged in the tank body, the two water distribution structures respectively include a plurality of groups of water distribution pipelines arranged in sequence, each group of water distribution pipelines includes at least three water distribution pipe sections, each water distribution pipe section is provided with a plurality of nozzles, and the plurality of nozzles are arranged at intervals along the extension direction of the water distribution pipe section so that the liquid flowing into the water distribution pipe section is sprayed out from the plurality of nozzles; a detection structure, respectively connected to the two water distribution structures, for detecting the load value in the water distribution structure; wherein a valve assembly is provided on each water distribution pipe section, so as to detect the load value in the water distribution structure through the detection structure, and control the valve assembly on the corresponding water distribution pipe section of at least three water distribution pipe sections to open according to the detected load value.

[0007] Furthermore, when there are three water distribution pipe sections, the three water distribution pipe sections are respectively the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section, and the corresponding valve assemblies on the three water distribution pipe sections are the first valve assembly, the second valve assembly and the third valve assembly, so as to control the opening of the valve assemblies on the corresponding water distribution pipe sections through the detection results of the detection structure.

[0008] Furthermore, when the detection structure detects that the load value in the water distribution structure is within the first preset range, the first valve assemblies on each first water distribution pipe section are controlled to open, and the opening degree of each first valve assembly is adjusted to enable the first water distribution pipe section of each group of water distribution pipelines to spray water; wherein the first preset range is 0 to 20%.

[0009] Furthermore, when the detection structure detects that the load value in the water distribution structure is within a second preset range, the second valve assemblies on each second water distribution pipe section are controlled to open, and the opening degree of each second valve assembly is adjusted to enable the second water distribution pipe sections of each group of water distribution pipelines to spray water; wherein the second preset range is 20% to 50%.

[0010] Furthermore, when the detection structure detects that the load value in the water distribution structure is within the third preset range, the second valve assemblies and the third valve assemblies on each second water distribution pipe section and each third water distribution pipe section are controlled to open respectively, and the opening of each second valve assembly and each third valve assembly is adjusted respectively, so that the second water distribution pipe section and the third water distribution pipe section of each group of water distribution pipelines can spray water respectively; wherein the third preset range is 50% to 80%.

[0011] Furthermore, when the detection structure detects that the load value in the water distribution structure is within a fourth preset range, the first valve assembly, the second valve assembly and the third valve assembly on each of the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section are controlled to open respectively, and the opening degree of each of the first valve assembly, the second valve assembly and the third valve assembly is adjusted respectively, so that the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section of each group of water distribution pipelines spray water respectively; wherein the fourth preset range is 80% to 100%.

[0012] Furthermore, the diameter of the first water distribution pipe section is 50 mm, and the diameter of the nozzle on the first water distribution pipe section is 20 mm; and / or, the diameter of the second water distribution pipe section is 200 mm, and the diameter of the nozzle on the second water distribution pipe section is 50 mm; and / or, the diameter of the third water distribution pipe section is 400 mm, and the diameter of the nozzle on the third water distribution pipe section is 150 mm.

[0013] Furthermore, the water distribution system also includes: two connecting passages, which are respectively connected to multiple groups of water distribution pipes of two water distribution structures to supply water to the two water distribution structures. Control valves are provided on the two connecting passages to control the opening and closing of the connecting passages.

[0014] Furthermore, each water distribution pipe section is provided with a flow detection component, which is located at one end of the valve assembly away from the pipe mouth of the water distribution pipe section; and / or, each water distribution pipe section is provided with a regulating valve and a quick interface structure at one end away from the valve assembly, so as to control the liquid flowing in through the quick interface structure to flow into the water distribution pipe section through the regulating valve.

[0015] According to another aspect of the utility model, an anaerobic reactor is provided, comprising the above-mentioned water distribution system.

[0016] Applying the technical solution of the utility model, a water distribution system includes a tank body, two water distribution structures and a detection structure; the two water distribution structures are respectively arranged in the tank body, and the two water distribution structures respectively include a plurality of groups of water distribution pipelines arranged in sequence and at intervals, each group of water distribution pipelines includes at least three water distribution pipe sections, each water distribution pipe section is provided with a plurality of nozzles, and the plurality of nozzles are arranged at intervals along the extension direction of the water distribution pipe section so that the liquid flowing into the water distribution pipe section is sprayed out from the plurality of nozzles; the detection structure is respectively connected to the two water distribution structures to detect the load value in the water distribution structure; wherein each water distribution pipe section is provided with a valve assembly to detect the load value in the water distribution structure through the detection structure, and control the valve assembly on the corresponding water distribution pipe section of at least three water distribution pipe sections to open according to the detected load value. In this way, the load value in the water distribution structure is detected in real time by the detection structure, and the flow rate in the water distribution pipe section of each group of water distribution pipelines under different load values ​​is obtained, and then fed back to the computer program to control the opening or closing of the valve assembly on the corresponding water distribution pipe section in the water distribution pipeline, so that the water distribution of the anaerobic reactor under different loads is more uniform and the wastewater treatment is more efficient. At the same time, the unevenness of the water distributor is greatly reduced, the fluidization uniformity of the fluidization field of the anaerobic granular sludge bed is improved, and the granular sludge formation rate is increased under highly pre-acidified wastewater, and the granular sludge loss rate is reduced, thereby solving the problem of low efficiency of anaerobic reactor in treating wastewater due to uneven water distribution of the water distributor under different loads in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0018] Figure 1 The figure shows the overall structure schematic diagram provided according to the water distribution system embodiment of the utility model.

[0019] The above drawings include the following reference numerals:

[0020] 10. Tank body; 20. Water distribution structure; 30. Water distribution pipeline; 31. Water distribution pipe section; 310. Nozzle; 311. Valve assembly; 312. Flow detection component; 313. Quick interface structure; 40. Connection passage; 41. Control valve. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] In order to solve the problem in the prior art that uneven water distribution of a water distributor under different loads leads to low efficiency of treating wastewater in an anaerobic reactor, the utility model provides a water distribution system and an anaerobic reactor.

[0023] Please refer to Figure 1 As shown, in one aspect of the application of the utility model, a water distribution system includes a tank body 10, two water distribution structures 20 and a detection structure; the two water distribution structures 20 are respectively arranged in the tank body 10, and the two water distribution structures 20 respectively include a plurality of groups of water distribution pipelines 30 arranged in sequence and at intervals, and each group of water distribution pipelines 30 includes at least three water distribution pipe sections 31, and each water distribution pipe section 31 is provided with a plurality of nozzles 310, and the plurality of nozzles 310 are arranged at intervals along the extension direction of the water distribution pipe section 31 so that the liquid flowing into the water distribution pipe section 31 is sprayed out from the plurality of nozzles 310; the detection structure is respectively connected to the two water distribution structures 20 to detect the load value in the water distribution structure 20; wherein, each water distribution pipe section 31 is provided with a valve assembly 311 to detect the load value in the water distribution structure 20 through the detection structure, and the valve assembly 311 on the corresponding water distribution pipe section 31 of at least three water distribution pipe sections 31 is controlled to open according to the detected load value.

[0024] By applying the technical solution of this embodiment, the load value in the water distribution structure 20 is detected in real time through the detection structure, and the flow rate in the water distribution pipe section 31 of each group of water distribution pipelines 30 under different load values ​​is obtained, and then the flow rate is fed back to the computer program to control the opening or closing of the valve assembly 311 on the corresponding water distribution pipe section 31 in the water distribution pipeline 30, so that the water distribution of the anaerobic reactor under different loads is more uniform and the wastewater treatment is more efficient. At the same time, the unevenness of the water distributor is greatly reduced, the fluidization uniformity of the fluidization field of the anaerobic granular sludge bed is improved, and the granular sludge formation rate is increased under highly pre-acidified wastewater, and the granular sludge loss rate is reduced, thereby solving the problem of low efficiency of anaerobic reactor in treating wastewater due to uneven water distribution of the water distributor under different loads in the prior art.

[0025] It should be noted that, in this embodiment, the number of water distribution structures 20 is not limited thereto, and can be selected accordingly according to usage requirements and actual working conditions. Optionally, the water distribution structure 20 is one, three, four, five, or more.

[0026] In this embodiment, when there are three water distribution pipe sections 31, the three water distribution pipe sections 31 are the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section in sequence, and the corresponding valve assemblies 311 on the three water distribution pipe sections 31 are the first valve assembly, the second valve assembly and the third valve assembly, so as to control the valve assemblies 311 on the corresponding water distribution pipe sections 31 to open according to the detection results of the detection structure. In this way, after the detection structure detects the water distribution flow of the water distribution structure 20 under different load values ​​in real time, it is analyzed by a computer program, and then the valve assemblies 311 on the corresponding water distribution pipe sections 31 in each group of water distribution pipelines 30 are controlled to open or close, so as to adjust the flow in each water distribution pipe section 31 under different loads.

[0027] Specifically, when the detection structure detects that the load value in the water distribution structure 20 is within the first preset range, the first valve assembly on each first water distribution pipe section is controlled to open, and the opening of each first valve assembly is adjusted to make the first water distribution pipe section of each group of water distribution pipelines 30 spray water; wherein the first preset range is 0 to 20%. In this way, when the load of the water distribution system is below 20%, the first valve assembly on the first water distribution pipe section with a pipe diameter of 50mm in each group of water distribution pipelines 30 is controlled to open through computer program calculation, so that each first water distribution pipe section is sprayed by multiple nozzles 310 with a diameter of 20mm, and the opening of the first valve assembly is controlled in real time, thereby realizing uniform water distribution of the water distribution system under a load of 0 to 20%.

[0028] Specifically, when the detection structure detects that the load value in the water distribution structure 20 is within the second preset range, the second valve assembly on each second water distribution pipe section is controlled to open, and the opening degree of each second valve assembly is adjusted, so that the second water distribution pipe section of each group of water distribution pipelines 30 sprays water; wherein the second preset range is 20% to 50%. In this way, when the load of the water distribution system is between 20% and 50%, the second valve assembly on each group of water distribution pipelines 30 with a diameter of 200mm is controlled to open through computer program calculation, so that each second water distribution pipe section is sprayed by multiple nozzles 310 with a diameter of 50mm, and the opening degree of the second valve assembly is controlled in real time, thereby realizing the uniform water distribution of the water distribution system under a load of 20% to 50%.

[0029] Specifically, when the detection structure detects that the load value in the water distribution structure 20 is within the third preset range, the second valve assembly and the third valve assembly on each second water distribution pipe section and each third water distribution pipe section are controlled to open respectively, and the opening of each second valve assembly and each third valve assembly are adjusted respectively, so that the second water distribution pipe section and the third water distribution pipe section of each group of water distribution pipelines 30 are sprayed respectively; wherein the third preset range is 50% to 80%. In this way, when the load of the water distribution system is between 50% and 80%, the second valve assembly and the third valve assembly on the second water distribution pipe section with a pipe diameter of 200mm and the third water distribution pipe section with a pipe diameter of 400mm in each group of water distribution pipelines 30 are controlled to open respectively through computer program calculation, so that each second water distribution pipe section and each third water distribution pipe section are sprayed by multiple nozzles 310 with a diameter of 50mm and a diameter of 150mm respectively, and the opening of the second valve assembly and the third valve assembly are controlled respectively in real time, thereby realizing the uniform water distribution of the water distribution system under the load of 50% to 80%.

[0030] Specifically, when the detection structure detects that the load value in the water distribution structure 20 is within the fourth preset range, the first valve assembly, the second valve assembly and the third valve assembly on each of the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section are controlled to open respectively, and the opening degree of each of the first valve assembly, the second valve assembly and the third valve assembly is adjusted respectively, so that the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section of each group of water distribution pipelines 30 are sprayed with water respectively; wherein the fourth preset range is 80% to 100%. In this way, when the load of the water distribution system is between 80% and 100%, the computer program is used to calculate and control the first valve assembly, the second valve assembly and the third valve assembly on the first water distribution pipe section with a diameter of 50mm, a diameter of 200mm and a diameter of 400mm in each group of water distribution pipelines 30 to open respectively, so that each first water distribution pipe section, each second water distribution pipe section and each third water distribution pipe section are sprayed with water by multiple nozzles 310 with a diameter of 20mm, a diameter of 50mm and a diameter of 150mm respectively, and by controlling the opening of the second valve assembly and the third valve assembly respectively in real time, the water distribution of the water distribution system under a load of 50% to 80% is controlled to be uniform.

[0031] Specifically, the diameter of the first water distribution pipe section is 50mm, and the diameter of the nozzle 310 on the first water distribution pipe section is 20mm; the diameter of the second water distribution pipe section is 200mm, and the diameter of the nozzle 310 on the second water distribution pipe section is 50mm; the diameter of the third water distribution pipe section is 400mm, and the diameter of the nozzle 310 on the third water distribution pipe section is 150mm. In this way, when the detection structure detects the water distribution flow rate in each water distribution pipe section 31 of the water distribution structure 20 under different loads in real time, the valve assembly 311 on the corresponding water distribution pipe section 31 in the water distribution pipe sections 31 of different diameters is controlled by computer program control calculation, so that the water distribution uniformity of the water distribution system under different loads is improved, thereby improving the wastewater treatment efficiency of the anaerobic reactor.

[0032] It should be noted that, in this embodiment, the diameter of the water distribution pipe section 31 is its maximum outer diameter.

[0033] Specifically, the water distribution system further includes two connecting passages 40, which are respectively connected to the multiple groups of water distribution pipes 30 of the two water distribution structures 20 to supply water to the two water distribution structures 20. The two connecting passages 40 are both provided with control valves 41 to control the on-off of the connecting passages 40. In this way, the water distribution structures 20 are supplied with water through the corresponding connecting passages 40, and the flow rate supplied to each water distribution structure 20 can be controlled by adjusting the control valves 41.

[0034] In this embodiment, each water distribution pipe section 31 is provided with a flow detection component 312, and the flow detection component 312 is located at one end of the valve assembly 311 away from the pipe mouth of the water distribution pipe section 31. The above arrangement can be used to detect the flow size in each water distribution pipe section 31 in real time, and feed it back to the computer program for calculation and real-time corresponding adjustment of the valve assembly 311 on the corresponding water distribution pipe section 31.

[0035] Optionally, a regulating valve and a quick interface structure 313 are provided at one end of each water distribution pipe section 31 away from the valve assembly 311, so as to control the liquid flowing in through the quick interface structure 313 to flow into the water distribution pipe section 31 through the regulating valve. In this way, an external cleaning device can be connected through the quick interface structure 313 to flush and clear each water distribution pipe section 31, thereby ensuring continuous operation under different working conditions and preventing the problem of low efficiency of wastewater treatment in the anaerobic reactor caused by blockage of the water distribution pipe section 31.

[0036] From the above description, it can be seen that the above embodiments of the utility model achieve the following technical effects:

[0037] The water distribution system includes a tank body, two water distribution structures and a detection structure; the two water distribution structures are respectively arranged in the tank body, and the two water distribution structures respectively include a plurality of groups of water distribution pipes arranged in sequence, each group of water distribution pipes includes at least three water distribution pipe sections, and each water distribution pipe section is provided with a plurality of nozzles, and the plurality of nozzles are arranged at intervals along the extension direction of the water distribution pipe section so that the liquid flowing into the water distribution pipe section can be sprayed out from the plurality of nozzles; the detection structure is respectively connected to the two water distribution structures to detect the load value in the water distribution structure; wherein each water distribution pipe section is provided with a valve assembly to detect the load value in the water distribution structure through the detection structure, and control the valve assembly on the corresponding water distribution pipe section of at least three water distribution pipe sections to open according to the detected load value. In this way, the load value in the water distribution structure is detected in real time by the detection structure, and the flow rate in the water distribution pipe section of each group of water distribution pipelines under different load values ​​is obtained, and then fed back to the computer program to control the opening or closing of the valve assembly on the corresponding water distribution pipe section in the water distribution pipeline, so that the water distribution of the anaerobic reactor under different loads is more uniform and the wastewater treatment is more efficient. At the same time, the unevenness of the water distributor is greatly reduced, the fluidization uniformity of the fluidization field of the anaerobic granular sludge bed is improved, and the granular sludge formation rate is increased under highly pre-acidified wastewater, and the granular sludge loss rate is reduced, thereby solving the problem of low efficiency of anaerobic reactor in treating wastewater due to uneven water distribution of the water distributor under different loads in the prior art.

[0038] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0039] Unless otherwise specifically stated, the relative arrangement, numerical expressions and numerical values ​​of the parts and steps described in these embodiments do not limit the scope of the utility model. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the accompanying drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once a certain item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0040] In the description of the present utility model, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present utility model and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the scope of protection of the present utility model; the directional words "inside and outside" refer to the inside and outside relative to the contours of each component itself.

[0041] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used here to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0042] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A water distribution system, characterized in that: include: Tank body (10); Two water distribution structures (20) are respectively arranged in the tank body (10), and the two water distribution structures (20) respectively include a plurality of groups of water distribution pipelines (30) arranged in sequence and at intervals, and each group of the water distribution pipelines (30) includes at least three water distribution pipe sections (31), and each of the water distribution pipe sections (31) is provided with a plurality of nozzles (310), and the plurality of nozzles (310) are arranged at intervals along the extension direction of the water distribution pipe sections (31), so that the liquid flowing into the water distribution pipe sections (31) is sprayed out from the plurality of nozzles (310); a detection structure, connected to the two water distribution structures (20) respectively, for detecting a load value in the water distribution structure (20); Wherein, each of the water distribution pipe sections (31) is provided with a valve assembly (311) so as to detect the load value in the water distribution structure (20) through the detection structure, and control the valve assembly (311) on the corresponding water distribution pipe section (31) among at least three of the water distribution pipe sections (31) to open according to the detected load value.

2. The water distribution system according to claim 1, characterized in that: When there are three water distribution pipe sections (31), the three water distribution pipe sections (31) are respectively a first water distribution pipe section, a second water distribution pipe section and a third water distribution pipe section, and the corresponding valve assemblies (311) on the three water distribution pipe sections (31) are a first valve assembly, a second valve assembly and a third valve assembly, so as to control the opening of the valve assemblies (311) on the corresponding water distribution pipe sections (31) through the detection results of the detection structure.

3. The water distribution system according to claim 2, characterized in that: When the detection structure detects that the load value in the water distribution structure (20) is within a first preset range, the first valve assembly on each of the first water distribution pipe sections is controlled to open, and the opening degree of each of the first valve assemblies is adjusted so that the first water distribution pipe sections of each group of the water distribution pipelines (30) spray water; wherein the first preset range is 0 to 20%.

4. The water distribution system according to claim 2, characterized in that: When the detection structure detects that the load value in the water distribution structure (20) is within a second preset range, the second valve assembly on each second water distribution pipe section is controlled to open, and the opening degree of each second valve assembly is adjusted to enable the second water distribution pipe section of each group of the water distribution pipelines (30) to spray water; wherein the second preset range is 20% to 50%.

5. The water distribution system according to claim 2, characterized in that: When the detection structure detects that the load value in the water distribution structure (20) is within the third preset range, the second valve assembly and the third valve assembly on each of the second water distribution pipe sections and each of the third water distribution pipe sections are controlled to open respectively, and the opening degree of each of the second valve assembly and each of the third valve assemblies is adjusted respectively, so that the second water distribution pipe section and the third water distribution pipe section of each group of the water distribution pipelines (30) spray water respectively; wherein the third preset range is 50% to 80%.

6. The water distribution system according to claim 2, characterized in that: When the detection structure detects that the load value in the water distribution structure (20) is within a fourth preset range, the first valve assembly, the second valve assembly and the third valve assembly on each of the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section are controlled to open respectively, and the opening degree of each of the first valve assembly, the second valve assembly and the third valve assembly is adjusted respectively, so that the first water distribution pipe section, the second water distribution pipe section and the third water distribution pipe section of each group of the water distribution pipelines (30) respectively spray water; wherein the fourth preset range is 80% to 100%.

7. The water distribution system according to claim 2, characterized in that: The diameter of the first water distribution pipe section is 50 mm, and the diameter of the nozzle (310) on the first water distribution pipe section is 20 mm; and / or, The diameter of the second water distribution pipe section is 200 mm, and the diameter of the nozzle (310) on the second water distribution pipe section is 50 mm; and / or, The diameter of the third water distribution pipe section is 400 mm, and the diameter of the nozzle (310) on the third water distribution pipe section is 150 mm.

8. The water distribution system according to claim 1, characterized in that: The water distribution system also includes: The two connecting passages (40) are respectively connected to the multiple groups of water distribution pipelines (30) of the two water distribution structures (20) to supply water to the two water distribution structures (20). The two connecting passages (40) are both provided with control valves (41) to control the opening and closing of the connecting passages (40).

9. The water distribution system according to claim 1, characterized in that: Each of the water distribution pipe sections (31) is provided with a flow detection component (312), and the flow detection component (312) is located at an end of the valve assembly (311) away from the pipe opening of the water distribution pipe section (31); and / or, An end of each of the water distribution pipe sections (31) away from the valve assembly (311) is provided with a regulating valve and a quick interface structure (313) so as to control the liquid flowing in through the quick interface structure (313) to flow into the water distribution pipe section (31) through the regulating valve.

10. An anaerobic reactor, characterized in that: A water distribution system comprising the water distribution system described in any one of claims 1 to 9.

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