Low-digestion lagoon

Abstract

This utility model provides a low-digestion septic tank, relating to the technical field of urban sewage treatment. It includes a septic tank body, connecting members, and a screen. The septic tank body has a receiving cavity, with one end designated as the inlet and the other as the outlet. Multiple connecting members are provided, spaced apart and detachably connected to the screen. The screen is located within the receiving cavity, between the inlet and outlet, dividing the receiving cavity into a first cavity and a second cavity. The screen filters fecal sludge from the water. This utility model alleviates the technical problems in the prior art where solid deposits cause blockages that are difficult to clean, and where the COD concentration in sewage is easily reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of urban sewage treatment, and in particular to a low-digestion septic tank. Background Technology

[0002] As an important component of urban sewage systems, the construction and operation of septic tanks greatly influence the effectiveness of water environment management. Septic tanks play a certain role in the primary treatment of sewage.

[0003] As the primary source of sewage, densely populated urban villages rely heavily on their sewage collection pipes and septic tanks, which are crucial components of sewage collection and treatment facilities. The quality of their operation and maintenance, and the level of management, directly determine the efficiency of sewage collection and treatment. Existing septic tanks are generally divided into traditional brick-concrete septic tanks and three-compartment fiberglass septic tanks.

[0004] However, although three-compartment fiberglass septic tanks are less prone to leakage compared to traditional brick-concrete septic tanks, their high COD removal rate of 40% to 70% in domestic sewage can easily lead to insufficient carbon source in the influent of subsequent sewage treatment plants. This is detrimental to the operation of the entire drainage system and reduces the contribution of densely populated urban villages to the overall sewage collection and efficiency improvement system. Utility Model Content

[0005] The purpose of this invention is to provide a low-digestion septic tank to alleviate the technical problems in the prior art, such as blockage caused by solid sediments that are difficult to clean, and the significant reduction in COD concentration in sewage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] In the first aspect, the present invention provides a low-digestion septic tank, including a septic tank body, a hanging component and a grating, wherein a receiving cavity is provided in the septic tank body, and one end of the septic tank body is provided as an inlet end and the other end is provided as an outlet end.

[0008] The hook-on component is provided in multiple parts, and the multiple hook-on components are spaced apart and are all detachably connected to the grille;

[0009] The screen is disposed in the receiving cavity and is located between the water inlet and the water outlet to divide the receiving cavity into a first cavity and a second cavity. The screen is used to filter fecal residue in the water.

[0010] Furthermore, the top of the septic tank body is provided with a cleaning hole and an observation hole, the cleaning hole being located in the first cavity;

[0011] The observation hole is located in the second cavity.

[0012] Furthermore, the low-digestion septic tank also includes a first well structure, which is connected to the septic tank body and is covered at the cleaning hole.

[0013] Furthermore, the first well structure includes a first well body and a first locking well cover, the first well body is covered on top of the cleaning hole, and the first locking well cover is provided on top of the first well body.

[0014] Furthermore, the low-digestion septic tank also includes a second well structure, which is connected to the septic tank body and is covered at the observation hole.

[0015] Furthermore, the second well structure includes a second well body and a second locking well cover, the second well body being covered on top of the observation hole, and the second locking well cover being provided on top of the second well body.

[0016] Furthermore, the low-digestion septic tank also includes a vent pipe connected to the second locking manhole cover, and the vent pipe is used to connect the second cavity to the outside.

[0017] Furthermore, the septic tank body has three water inlet structures at its water inlet end, and all three water inlet structures are used to connect to an external water inlet device.

[0018] The septic tank body has three outlet structures at its outlet end, and all three outlet structures are used to discharge the water filtered by the grille into the septic tank body.

[0019] Furthermore, each of the water inlet structures includes a water inlet pipe, a first bend pipe, and a first support. One end of the water inlet pipe is connected to the first bend pipe, and the other end is used to connect to the water inlet device.

[0020] The first support is connected to the inner wall of the septic tank body, and the first support is connected to the first bent pipe disposed in the accommodating cavity.

[0021] Furthermore, each of the aforementioned water outlet structures includes a water outlet pipe, a second bend pipe, and a second support. One end of the water outlet pipe is connected to the second bend pipe, and the other end extends out of the septic tank body.

[0022] The second bracket is connected to the inner wall of the septic tank body, and the second bracket is connected to the second bent pipe disposed in the accommodating cavity.

[0023] This utility model can achieve the following beneficial effects:

[0024] In a first aspect, this utility model provides a low-digestion septic tank, including a septic tank body, connecting parts, and a grating. The septic tank body has a receiving cavity, with one end of the septic tank body designated as an inlet and the other end as an outlet. Multiple connecting parts are provided, and the multiple connecting parts are spaced apart and detachably connected to the grating. The grating is located in the receiving cavity, between the inlet and outlet, to divide the receiving cavity into a first cavity and a second cavity. The grating is used to filter fecal sludge in the water.

[0025] In this invention, the septic tank body is primarily made of reinforced concrete, and preferably has a rectangular parallelepiped structure. It contains a rectangular parallelepiped-shaped receiving cavity, with an inlet at one end and an outlet at the opposite end. A crossbeam is located at the top of the septic tank body, with multiple hooks spaced along its extension direction. These hooks are used to connect a grating, allowing the grating to be inclined within the receiving cavity. The grating divides the receiving cavity into a first cavity and a second cavity, with the grating inclined downwards towards the second cavity. The grating is supported by cylindrical round steel profiles with a diameter of 10mm, a bar spacing of 80mm, and an inclination angle of 60°.

[0026] Compared with existing technologies, the low-nitrification septic tank provided by this utility model, by setting a grid inside the septic tank body, achieves functional zoning of the tank interior, thereby enabling both the deposition of fecal sludge and the effective collection of fecal liquid, avoiding blockage caused by solid deposits; and reducing the residence time of fecal water in the tank compared to traditional septic tanks, thus improving the low-nitrification effect of the septic tank on source sewage, promoting the improvement of sewage collection quality and efficiency, and preventing a significant reduction in the concentration of COD in sewage.

[0027] In summary, this invention at least alleviates the technical problems existing in the prior art, such as blockages caused by solid deposits that are difficult to clean, and the significant reduction in COD concentration in wastewater. Attached Figure Description

[0028] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0029] Figure 1 A top view of the low-digestion septic tank provided in an embodiment of this utility model;

[0030] Figure 2 for Figure 1The schematic diagram of the AA section structure is shown in the figure;

[0031] Figure 3 for Figure 1 The schematic diagram of the BB cross-section structure is shown in the figure;

[0032] Figure 4 This is a schematic diagram of the internal structure of a low-digestion septic tank provided in an embodiment of the present invention.

[0033] Icons: 1-Septic tank body; 11-First cavity; 111-Cleaning hole; 12-Second cavity; 121-Observation hole; 13-Crossbeam; 2-Hanging component; 3-Grate; 4-Water inlet structure; 41-Water inlet pipe; 42-First bend; 43-First support; 5-Water outlet structure; 51-Water outlet pipe; 52-Second bend; 53-Second support; 6-Ventilation pipe; 7-First well structure; 71-First well body; 72-First locking manhole cover; 8-Second well structure; 81-Second well body; 82-Second locking manhole cover. Detailed Implementation

[0034] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0035] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0036] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0037] In the description of this utility model, it should be noted that the terms "upper," "lower," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0038] Furthermore, terms such as "horizontal" and "vertical" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0039] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," and "connect" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0041] Example 1

[0042] This embodiment provides a low-digestion septic tank, referring to... Figure 2 and Figure 4 The low-digestion septic tank includes a septic tank body 1, a connecting piece 2, and a grid 3. The septic tank body 1 has a receiving cavity, with one end of the septic tank body 1 designated as the inlet and the other end as the outlet. Multiple connecting pieces 2 are provided, and the multiple connecting pieces 2 are spaced apart and detachably connected to the grid 3. The grid 3 is located in the receiving cavity, between the inlet and outlet, to divide the receiving cavity into a first cavity 11 and a second cavity 12. The grid 3 is used to filter fecal sludge in the water.

[0043] This invention at least alleviates the technical problems existing in the prior art, such as blockages caused by solid deposits that are difficult to clean, and the significant reduction in COD concentration in wastewater.

[0044] In this embodiment of the invention, the septic tank body 1 is primarily made of reinforced concrete, and preferably has a rectangular parallelepiped structure. It contains a rectangular parallelepiped cavity, with an inlet at one end and an outlet at the opposite end. A crossbeam 13 is located at the top of the septic tank body 1, and multiple hooks 2 are spaced along its extension direction on the crossbeam 13. These hooks are preferably hooks, and all hooks are used to connect to a grid 3, allowing the grid 3 to be inclined within the cavity. The grid 3 divides the cavity into a first cavity 11 and a second cavity 12, with the grid 3 tilting downwards towards the second cavity 12. The grid 3 is supported by cylindrical round steel profiles with a diameter of 10mm, a bar spacing of 80mm, and an inclination angle of 60°.

[0045] Compared with the prior art, the low-digestion septic tank provided in this embodiment of the utility model, by setting a grid 3 inside the septic tank body 1, achieves functional zoning of the tank interior, so as to achieve both the deposition of fecal sludge and the effective collection of fecal liquid, avoiding blockage caused by solid deposits; and the residence time of fecal water in the tank is lower than that of traditional septic tanks, so as to achieve the low nitrification effect of the septic tank on the source sewage, promote the improvement of sewage collection quality and efficiency, and avoid the situation of a significant reduction in the concentration of COD in sewage.

[0046] In an optional implementation of this embodiment, refer to Figure 1 The septic tank body 1 has a cleaning hole 111 and an observation hole 121 on its top. The cleaning hole 111 is located in the first cavity 11, and the observation hole 121 is located in the second cavity 12.

[0047] Specifically: the cleaning hole 111 is located above the first cavity 11, while the observation hole 121 is located above the second cavity 12; preferably, the diameter of the cleaning hole 111 is 800mm and it is located at the front end of the grille 3; correspondingly, the diameter of the observation hole 121 is 800mm and it is located at the rear end of the grille 3.

[0048] Furthermore, referring to Figure 2 The low-digestion septic tank also includes a first well structure 7, which is connected to the septic tank body 1 and is covered at the cleaning hole 111.

[0049] Specifically: the first well structure 7 is installed on top of the cleaning hole 111 and is arranged around the circumference of the cleaning hole 111. The top of the first well structure 7 is an openable structure so as to be opened during the cleaning of fecal sludge.

[0050] Furthermore, referring to Figure 2 The first well structure 7 includes a first well body 71 and a first locking well cover 72. The first well body 71 is covered on the top of the cleaning hole 111, and the first locking well cover 72 is provided on the top of the first well body 71.

[0051] Specifically: the first well body 71 is arranged around the top of the cleaning hole 111 along the circumference of the cleaning hole 111, and the first locking well cover 72 is covered on the top of the first well body 71, and the first locking well cover 72 is preferably a double-layer locking well cover.

[0052] In an optional implementation of this embodiment, refer to Figure 2 The low-digestion septic tank also includes a second well structure 8, which is connected to the septic tank body 1 and is covered at the observation hole 121.

[0053] Specifically: the second well structure 8 is installed on top of the observation hole 121 and is arranged around the circumference of the observation hole 121. The top of the second well structure 8 is an openable structure so as to facilitate opening when observing whether the septic tank is operating normally.

[0054] Furthermore, referring to Figure 2 The second well structure 8 includes a second well body 81 and a second locking well cover 82. The second well body 81 is covered on top of the observation hole 121, and the second locking well cover 82 is provided on the top of the second well body 81.

[0055] Specifically: the second well body 81 is arranged on top of the observation hole 121 along the circumference of the observation hole 121, and the second locking well cover 82 is covered on top of the second well body 81, and the second locking well cover 82 is preferably a double-layer locking well cover.

[0056] Furthermore, referring to Figure 2 and Figure 3 The low-digestion septic tank also includes a vent pipe 6, which is connected to the second locking manhole cover 82, and the vent pipe 6 is used to connect the second cavity 12 to the outside.

[0057] Specifically: the diameter of the vent pipe 6 is 100mm. One end of the vent pipe 6 is connected to the second cavity 12, and the other end leads to the outside of the septic tank body 1. In use, the vent pipe 6 is used to prevent biogas from accumulating in the tank and avoid flammable and explosive hazards.

[0058] In an optional implementation of this embodiment, refer to Figure 1 The septic tank body 1 has three water inlet structures 4 at its inlet end, and all three water inlet structures 4 are used to connect to an external water inlet device; the septic tank body 1 has three water outlet structures 5 at its outlet end, and all three water outlet structures 5 are used to discharge the water filtered by the screen 3 from the septic tank body 1.

[0059] Specifically, three water inlet structures 4 are connected to three sides of one end of the septic tank body 1, meaning that each of the three sides of one end of the septic tank body 1 is provided with a water inlet structure 4, allowing the appropriate number of water inlet structures 4 to be opened according to actual usage needs. Correspondingly, three water outlet structures 5 are also provided on the three sides of the other end of the septic tank body 1, allowing the water outlet speed to be adjusted by opening the appropriate number of water outlet structures 5.

[0060] Furthermore, referring to Figure 2 Each water inlet structure 4 includes a water inlet pipe 41, a first bend pipe 42, and a first support 43. One end of the water inlet pipe 41 is connected to the first bend pipe 42, and the other end is used to connect to the water inlet device. The first support 43 is connected to the inner wall of the septic tank body 1, and the first support 43 is connected to the first bend pipe 42 located in the accommodating cavity.

[0061] Specifically: the diameter of the inlet pipe 41 is 150mm~200mm, and the inlet pipe 41 is detachably connected to the first bend pipe 42. The first bend pipe 42 is set at 90° downward to reduce the impact of water flow on sewage flowing into the septic tank; one end of the first support 43 is connected to the inner wall of the septic tank body 1, and the other end forms a ring structure to be used to clamp the outer wall of the first bend pipe 42.

[0062] In an optional implementation of this embodiment, refer to Figure 2 Each water outlet structure 5 includes a water outlet pipe 51, a second bend pipe 52, and a second support 53. One end of the water outlet pipe 51 is connected to the second bend pipe 52, and the other end extends out of the septic tank body 1. The second support 53 is connected to the inner wall of the septic tank body 1, and the second support 53 is connected to the second bend pipe 52 located in the accommodating cavity.

[0063] Specifically: the diameter of the outlet pipe 51 is 150mm~200mm, and the outlet pipe 51 is detachably connected to the second bend pipe 52. The end of the outlet pipe 51 away from the second bend pipe 52 is connected to the urban village sewage collection pipe; while one end of the second support 53 is connected to the inner wall of the septic tank body 1, and the other end forms a ring structure to be used to tighten on the outer wall of the second bend pipe 52.

[0064] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to mutually. The above embodiments in this specification are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the various embodiments of this utility model.

Claims

1. A low-digestion septic tank, characterized in that, It includes a septic tank body (1), a hanging part (2) and a grid (3). The septic tank body (1) has a receiving cavity, and one end of the septic tank body (1) is a water inlet and the other end is a water outlet. The hook (2) is provided in multiple ways, and the multiple hooks (2) are spaced apart and are detachably connected to the grille (3); The grille (3) is disposed in the accommodating cavity and is located between the water inlet and the water outlet to divide the accommodating cavity into a first cavity (11) and a second cavity (12). The grille (3) is used to filter fecal residue in the water.

2. The low-digestion septic tank according to claim 1, characterized in that, The septic tank body (1) has a cleaning hole (111) and an observation hole (121) on its top. The cleaning hole (111) is located in the first cavity (11). The observation hole (121) is located at the second cavity (12).

3. The low-digestion septic tank according to claim 2, characterized in that, It also includes a first well structure (7), which is connected to the septic tank body (1) and the first well structure (7) is installed at the cleaning hole (111).

4. The low-digestion septic tank according to claim 3, characterized in that, The first well structure (7) includes a first well body (71) and a first locking well cover (72). The first well body (71) covers the top of the cleaning hole (111), and the first locking well cover (72) is provided on the top of the first well body (71).

5. The low-digestion septic tank according to claim 2, characterized in that, It also includes a second well structure (8), which is connected to the septic tank body (1) and is covered at the observation hole (121).

6. The low-digestion septic tank according to claim 5, characterized in that, The second well structure (8) includes a second well body (81) and a second locking well cover (82). The second well body (81) is covered on top of the observation hole (121), and the second locking well cover (82) is provided on top of the second well body (81).

7. The low-digestion septic tank according to claim 6, characterized in that, It also includes a vent pipe (6), which is connected to the second locking manhole cover (82) and is used to connect the second cavity (12) to the outside.

8. The low-digestion septic tank according to claim 1, characterized in that, The septic tank body (1) has three water inlet structures (4) at its water inlet end, and all three water inlet structures (4) are used to connect to an external water inlet device. The septic tank body (1) has three water outlet structures (5) at its outlet end, and all three water outlet structures (5) are used to discharge the water filtered by the grille (3) out of the septic tank body (1).

9. The low-digestion septic tank according to claim 8, characterized in that, Each of the water inlet structures (4) includes a water inlet pipe (41), a first bend pipe (42) and a first bracket (43). One end of the water inlet pipe (41) is connected to the first bend pipe (42), and the other end is used to connect to the water inlet device. The first support (43) is connected to the inner wall of the septic tank body (1), and the first support (43) is connected to the first bent pipe (42) provided in the accommodating cavity.

10. The low-digestion septic tank according to claim 8, characterized in that, Each of the water outlet structures (5) includes a water outlet pipe (51), a second bend pipe (52), and a second support (53). One end of the water outlet pipe (51) is connected to the second bend pipe (52), and the other end extends out of the septic tank body (1). The second support (53) is connected to the inner wall of the septic tank body (1), and the second support (53) is connected to the second bent pipe (52) provided in the accommodating cavity.

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