Sludge discharging device of hydrolysis acidification pool

Abstract

The utility model provides a sludge discharge device of a hydrolysis acidification pool. The sludge discharge device comprises a unit sludge discharge assembly. Each unit sludge discharge assembly comprises a water distribution pipe, a sludge discharge pipe assembly and at least one sludge pump. The water distribution pipe is used for discharging sewage into the degradation tank; the sludge discharge pipe assembly comprises a plurality of first sludge discharge pipe sections, the first sludge discharge pipe sections extend in the horizontal direction, and the first sludge discharge pipe sections are sequentially distributed in the circumferential direction of the water distribution pipe and form an annular structure; a plurality of mud pumping holes are formed in the side wall of the first mud discharging pipe section and are sequentially distributed at intervals in the extending direction of the first mud discharging pipe section; and the mud pump is connected with the mud discharge pipe assembly. Sludge on the periphery of the water distribution pipe can be conveniently and thoroughly discharged.

Description

TECHNICAL FIELD

[0001] The present application relates to the sewage treatment technical field, especially to a hydrolysis acidification tank sludge discharge device. BACKGROUND

[0002] In the field of sewage treatment, the hydrolysis acidification process is a very common anaerobic treatment process. This process can decompose refractory organic matter into easily degradable organic matter, and can also degrade large molecular organic matter into small molecular organic matter, thereby greatly improving the biodegradability of wastewater to improve the conditions of subsequent biochemical treatment.

[0003] Among them, the growth of anaerobic bacteria is the key point of the hydrolysis acidification process. The accumulated sludge affects the metabolism of microorganisms, thereby causing poor treatment effect of the hydrolysis acidification tank, and needs to be discharged in time.

[0004] However, most of the existing hydrolysis acidification tanks use submersible mixers for water distribution, and do not set up sludge discharge devices. The water distribution of the submersible mixer is uneven, leaving dead angles, which can easily cause sludge to accumulate around the pool over a long period of time, making it difficult to discharge the sludge. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides a hydrolysis acidification tank sludge discharge device to solve the problems in the related art, and the technical scheme is as follows:

[0006] The embodiment of the present application provides a hydrolysis acidification tank sludge discharge device, which comprises a unit sludge discharge assembly;

[0007] The unit sludge discharge assembly comprises:

[0008] A water distribution pipe is arranged for discharging sewage into a degradation tank.

[0009] A sludge discharge pipe assembly comprises a plurality of first sludge discharge pipe sections, which extend in the horizontal direction, and are sequentially distributed around the circumference of the water distribution pipe and form a ring structure. A plurality of sludge suction holes are arranged on the side wall of the first sludge discharge pipe section, and are sequentially and spacedly distributed along the extension direction of the first sludge discharge pipe section.

[0010] At least one sludge suction pump is connected to the sludge discharge pipe assembly.

[0011] In one embodiment, the sludge suction holes belonging to the same unit sludge discharge assembly are all directed to the sludge suction pump.

[0012] In one embodiment, a plurality of first sludge discharge pipe sections are sequentially connected in head-to-tail manner.

[0013] In one embodiment, a plurality of first sludge discharge pipe sections form a closed loop structure.

[0014] In one embodiment, the sludge pumping device is provided with a plurality of, and one of the sludge pumping devices is connected to the joint between two adjacent first sludge discharge pipe sections.

[0015] In one embodiment, the sludge pumping device is connected to a branch pipe, and the branch pipe is connected to the joint between two adjacent first sludge discharge pipe sections through a multi-way pipe.

[0016] In one embodiment, the unit sludge discharge assembly further comprises a second sludge discharge pipe section, one end of the second sludge discharge pipe section is connected to the bottom of the water distribution pipe, and the other end of the second sludge discharge pipe section is used to pass out to the outside of the degradation tank and is connected to a sludge discharge control valve.

[0017] In one embodiment, the unit sludge discharge assembly is provided with a plurality of, and the plurality of unit sludge discharge assemblies are distributed in the horizontal direction.

[0018] In one embodiment, the first sludge discharge pipe section is a straight section, and the vertical projection of the sludge discharge pipe assembly is a square structure.

[0019] In one embodiment, the sludge discharge device of the hydrolysis acidification tank further comprises a degradation tank, and the sludge discharge pipe assembly is arranged at the bottom of the degradation tank.

[0020] The advantages or beneficial effects of the above technical solutions at least include:

[0021] By guiding the sewage into the degradation tank through the water distribution pipe, under the action of water flow inertia, the sludge is evenly distributed around the periphery of the water distribution pipe, and the microorganisms are also evenly distributed along the periphery of the water distribution pipe. At this time, by limiting the first sludge discharge pipe section to extend in the horizontal direction, a plurality of first sludge discharge pipe sections are distributed in sequence around the periphery of the water distribution pipe and form a ring structure, and a plurality of sludge pumping holes are formed in the side wall of the first sludge discharge pipe section, and the plurality of sludge pumping holes are distributed in sequence and in the extension direction of the first sludge discharge pipe section. In this way, the plurality of sludge pumping holes located in different first sludge discharge pipe sections are densely distributed in sequence around the periphery of the water distribution pipe, so that the sludge can be uniformly pumped into each first sludge discharge pipe section, thereby fully and uniformly discharging the sludge in the degradation tank, and also avoiding the concentration of microorganisms being pumped out, so as to ensure that there are sufficient microorganisms in the degradation tank.

[0022] The above summary is only for the purpose of the description and is not intended to limit in any way. In addition to the above-described illustrative aspects, embodiments, and features, further aspects, embodiments, and features of the present application will be readily apparent from the drawings and the following detailed description. BRIEF DESCRIPTION OF DRAWINGS

[0023] In the drawings, like reference numerals refer to like elements throughout the various figures. The drawings are not necessarily to scale, and the emphasis is on the functional operation of each element. It should be understood that these drawings are merely examples, which should not be taken as a limitation on the scope of the present application.

[0024] Figure 1 A structural schematic diagram of a first embodiment of a sludge discharge device for a hydrolytic acidification tank according to the present application;

[0025] Figure 2 A structural schematic diagram of a second embodiment of a sludge discharge device for a hydrolytic acidification tank according to the present application;

[0026] Figure 3 A structural schematic diagram of a third embodiment of a sludge discharge device for a hydrolytic acidification tank according to the present application.

[0027] In the drawings: 1, unit sludge discharge assembly; 11, water distribution pipe; 12, sludge discharge pipe assembly; 121, first sludge discharge pipe section; 13, sludge pump; 14, branch pipe; 15, multi-way pipe; 16, second sludge discharge pipe section; 17, sludge discharge control valve; 2, degradation tank. DETAILED DESCRIPTION

[0028] In the following, only certain exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present application. Therefore, the drawings and the description are considered to be exemplary in nature rather than limiting.

[0029] Reference Figure 1 The sludge discharge device for a hydrolytic acidification tank according to the present embodiment comprises a unit sludge discharge assembly 1. The unit sludge discharge assembly 1 comprises a water distribution pipe 11, a sludge discharge pipe assembly 12, and at least one sludge pump 13.

[0030] The water distribution pipe 11 is used to discharge sewage into the degradation tank 2. Specifically, the top of the water distribution pipe 11 is connected to a pulse water distributor or other conventional water distributor, which will impact downward along the water distribution pipe 11 when water accumulates. With the increase of sewage, sludge gradually deposits on the bottom wall and side wall of the degradation tank 2, covering the microorganisms, and the accumulated sludge affects the metabolism of the microorganisms, which in turn causes poor treatment effect of the hydrolytic acidification tank, and needs to be discharged in time.

[0031] The sludge discharge pipe assembly 12 includes multiple first sludge discharge pipe segments 121, which extend horizontally. These segments are sequentially distributed around the water distribution pipe 11, forming a ring structure. The ring structure can be either an open-loop or closed-loop structure. Multiple sludge extraction holes are provided on the sidewalls of each first sludge discharge pipe segment 121, and these holes are sequentially spaced along the extension direction of the first sludge discharge pipe segment 121. Because the first sludge discharge pipe segments 121 extend horizontally, the multiple sludge extraction holes are sequentially spaced along the horizontal direction, and the multiple sludge extraction holes located in different first sludge discharge pipe segments 121 are densely distributed sequentially around the water distribution pipe 11.

[0032] The sludge pump 13 is connected to the sludge discharge pipe assembly 12. When all the first sludge discharge pipe segments 121 are connected end to end in sequence, only one sludge pump 13 needs to be installed, but it is not limited to one; that is, multiple sludge pumps 13 can be installed at this time. When all the first sludge discharge pipe segments 121 are not connected end to end in sequence, multiple sludge pumps 13 need to be installed, and if necessary, one sludge pump 13 is connected to each first sludge discharge pipe segment 121.

[0033] During operation, the sludge in the degradation tank 2 can be detected by a sludge sensor, and the signal is transmitted to the control system. The control system then starts the sludge pump 13 to discharge sludge as needed. Alternatively, a time relay or similar device can be installed on the sludge pump 13, so that the pump automatically starts and operates for a period of time when the time is up. The discharge direction of the sludge is: degradation tank 2 → sludge suction hole → first sludge discharge pipe section 121 → sludge pump 13 → external environment.

[0034] Wastewater is introduced into the degradation tank 2 through the water distribution pipe 11. Under the action of water flow inertia, sludge is evenly distributed around the water distribution pipe 11, and microorganisms are also evenly distributed around the water distribution pipe 11. At this time, by defining the first sludge discharge pipe section 121 to extend horizontally, multiple first sludge discharge pipe sections 121 are sequentially distributed around the circumference of the water distribution pipe 11, forming a ring structure. The side wall of the first sludge discharge pipe section 121 has multiple sludge suction holes, which are sequentially and spaced apart along the extension direction of the first sludge discharge pipe section 121. In this way, multiple sludge suction holes located in different first sludge discharge pipe sections 121 are densely distributed sequentially around the circumference of the water distribution pipe 11, so that sludge can be evenly sucked into each first sludge discharge pipe section 121, thereby achieving comprehensive and uniform discharge of sludge from the degradation tank 2, and also preventing microorganisms from being concentratedly sucked out, so as to ensure that there are sufficient microorganisms in the degradation tank 2. In this way, the sludge removal device of the hydrolysis acidification tank can conveniently and thoroughly remove the sludge around the water distribution pipe 11.

[0035] In one embodiment, the sludge suction holes belonging to the same unit sludge discharge assembly 1 all face the sludge pump 13. This ensures that the periphery of the water distribution pipe 11 is subjected to a uniform and strong suction force, thereby guaranteeing the stable discharge of sludge around the water distribution pipe 11. In other embodiments, some, but not all, of the sludge pumps 13 belonging to the same unit sludge discharge assembly 1 may face the water distribution pipe 11. In yet another embodiment, the sludge suction holes belonging to the same unit sludge discharge assembly 1 may be horizontal, and the orientation of the suction holes may be inclined at an acute angle relative to the first sludge discharge pipe section 121. Thus, the orientation of all the suction holes belonging to the same unit sludge discharge assembly 1 forms a vortex structure, thereby enabling the suctioned sludge to have a vortex effect.

[0036] In one embodiment, multiple first sludge discharge pipe sections 121 are connected end to end. Furthermore, each first sludge discharge pipe section 121 is equipped with a sludge pump 13 to improve the sludge discharge efficiency.

[0037] In one embodiment, multiple first sludge discharge pipe segments 121 form a closed-loop structure, meaning that the multiple first sludge discharge pipe segments 121 are connected end to end in a closed loop. This makes the suction force of the sludge discharge pipe assembly 12 more balanced.

[0038] In one embodiment, multiple sludge pumps 13 are provided, with one sludge pump 13 connected to the connection point of each pair of adjacent first sludge discharge pipe segments 121. Because the multiple first sludge discharge pipe segments 121 are connected end-to-end to form a closed loop structure, the sludge discharge pipe assembly 12 is less prone to blockage. That is, when one of the first sludge discharge pipe segments 121 is blocked in one direction, it can be cleared in the opposite direction by one of the two sludge pumps 13 connected nearby. In other words, this arrangement gives the sludge discharge pipe assembly 12 a dual-purpose function.

[0039] In one embodiment, in order to facilitate the placement of the sludge pump 13 outside the degradation tank 2, the sludge pump 13 is connected to a branch pipe 14, and the branch pipe 14 is connected to the connection point of the corresponding two adjacent first sludge discharge pipe sections 121 through a multi-port pipe 15.

[0040] In one embodiment, multiple unit sludge discharge assemblies 1 are provided, and the multiple unit sludge discharge assemblies 1 are distributed at intervals along the horizontal direction. With this arrangement, multiple water distribution pipes 11 and multiple sets of sludge discharge pipe assemblies 12 are provided in the degradation tank 2 to form a unit, thereby enabling a small area to be treated as a unit, so as to further ensure the sludge pumping effect in the degradation tank 2.

[0041] In one embodiment, the first sludge discharge pipe section 121 is a straight section, and the vertical projection of the sludge discharge pipe assembly 12 is a square structure. This arrangement results in a smaller spacing between adjacent sludge discharge assemblies 1, saving space and allowing for the installation of more sludge discharge pipe assemblies 12 within the degradation tank 2.

[0042] In one implementation, see Figure 2 To prevent the bottom of the water distribution pipe 11 from being blocked by sludge, the unit sludge discharge assembly 1 also includes a second sludge discharge pipe section 16. One end of the second sludge discharge pipe section 16 is connected to the bottom of the water distribution pipe 11, and the other end of the second sludge discharge pipe section 16 extends to the outside of the degradation tank 2 and is connected to a sludge discharge control valve 17. When water is flushed downwards through the water distribution pipe 11, if the sludge discharge control valve 17 is opened, the sludge directly below the water distribution pipe 11 will be discharged along the second sludge discharge pipe section 16 to the outside of the degradation tank 2, thereby clearing the water distribution pipe 11. The sludge discharge control valve 17 can be a mature manual valve or a mature electric valve.

[0043] In one implementation, see Figure 3 The sludge removal device for the hydrolysis acidification tank also includes a degradation tank 2, with the sludge removal pipe assembly 12 located at the bottom of the degradation tank 2. That is to say, this hydrolysis acidification tank sludge removal device can be equipped with the degradation tank 2, or the degradation tank 2 can be constructed by the user according to their environment.

[0044] Additionally, it should be noted that the water distribution pipe 11 can be connected to a pulse water distributor. The pulse water distributor guides the wastewater and provides water kinetic energy to the water distribution pipe 11. A hydrolysis acidification process package is added to the degradation tank 2. The hydrolysis acidification process includes various components such as pH adjuster, bacterial agent, and nutrients. The hydrolysis acidification process package is defined as the pulse hydrolysis acidification process package, or HZHAP for short.

[0045] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of those different embodiments or examples.

[0046] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0047] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various variations or substitutions within the technical scope disclosed in this application, and these should all be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A sludge removal device for a hydrolysis acidification tank, characterized in that, The unit sludge discharge assembly comprises: The unit sludge discharge assembly comprises: A water distribution pipe for discharging sewage into the degradation tank; The sludge discharge pipe assembly comprises a plurality of first sludge discharge pipe sections extending in the horizontal direction, which are sequentially distributed around the circumference of the water distribution pipe and form a ring structure; the side wall of the first sludge discharge pipe section is provided with a plurality of sludge suction holes which are sequentially and spacedly distributed along the extension direction of the first sludge discharge pipe section; At least one sludge suction pump connected with the sludge discharge pipe assembly.

2. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein The sludge suction holes belonging to the same unit sludge discharge assembly are all directed towards the sludge suction pump.

3. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein The first sludge discharge pipe sections are sequentially connected in a closed loop.

4. The sludge discharge device for a hydrolytic acidification tank according to claim 3, characterized by The first sludge discharge pipe sections form a closed loop structure.

5. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein There are a plurality of sludge suction pumps, and each of the connection positions of adjacent first sludge discharge pipe sections is connected with one sludge suction pump.

6. The sludge discharge device for a hydrolytic acidification tank according to claim 5, wherein The sludge suction pump is connected with a branch pipe which is connected to the connection position of the corresponding adjacent first sludge discharge pipe sections through a multi-way pipe.

7. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein The unit sludge discharge assembly further comprises a second sludge discharge pipe section, one end of which is connected to the bottom of the water distribution pipe, and the other end of which is used to pass out of the degradation tank and is connected with a sludge control valve.

8. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein There are a plurality of unit sludge discharge assemblies which are spacedly distributed in the horizontal direction.

9. The sludge discharge device for a hydrolytic acidification tank according to claim 8, characterized by The first sludge discharge pipe section is a straight section, and the vertical projection of the sludge discharge pipe assembly is a square structure.

10. The sludge discharge device for a hydrolytic acidification tank according to claim 1, wherein The hydrolysis acidification tank sludge discharge device further comprises a degradation tank, and the sludge discharge pipe assembly is arranged at the bottom of the degradation tank.

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