Modular septic tank and treatment process

Abstract

The invention discloses a modular septic tank and a treatment process, and relates to the field of rural toilet renovation engineering.The modular septic tank is configured to be a treatment manure pit which is fast to disassemble and assemble and flexible in combining.The treatment manure pit comprises a septic tank body, a bearing bottom frame, end connectors and a structure reinforcing frame; wherein the septic tank body comprises a standard unit A, a standard unit B and a standard unit C which are sequentially connected in series, the standard unit A, the standard unit B and the standard unit C are consistent in structure and are respectively used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, and each of the standard unit A, the standard unit B and the standard unit C comprises a barrel body, a rib plate and a cover plate; the barrel body is a cylinder with a large middle part and two small ends; according to the septic tank, split modular design is adopted, intelligent monitoring and multiple reinforcement functions are integrated, rapid deployment of the septic tank can be achieved, and the requirements for convenient transportation and low maintenance cost in a rural distributed toilet changing scene are met.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of rural toilet reconstruction project, and particularly relates to a modular septic tank and a treatment process. BACKGROUND

[0002] Rural toilet reconstruction is an important measure to improve the rural living environment. The core goal is to solve the problems of traditional dry toilets, such as dirtiness, disorder and poor quality, through sanitary toilet reconstruction and harmless treatment of fecal pollution, to reduce the risk of intestinal infectious disease transmission, and to realize the resource utilization of fecal pollution. However, in the actual promotion process, the technical bottleneck of the supporting septic tank becomes a key factor restricting the effectiveness of toilet reconstruction.

[0003] At present, the septic tank technology used in rural toilet reconstruction is still mainly based on traditional concrete structures. This type of septic tank needs to be cast on site or prefabricated as a whole, and has a large volume, relies on heavy machinery for transportation, and is difficult to pass through narrow village roads, field paths or simple bridges in rural areas. Large lifting equipment is required for installation, which has poor adaptability to terrain and a long construction period (usually 3-5 days), which seriously affects the progress of toilet reconstruction projects. More importantly, the volume of concrete septic tanks is fixed and cannot be flexibly adjusted according to the number of family members and the amount of sewage generated, often resulting in a mismatch between small families and large tanks or large families and small tanks. In addition, concrete materials are easily eroded by underground water, freeze-thaw cycles and soil acid-base corrosion. After long-term operation, the tank body is prone to cracking and leakage, which not only leads to treatment failure but also may pollute underground water. The internal structure is not visible, and the tank body needs to be broken down for cleaning, which not only increases the operation and maintenance cost but also damages the integrity of the toilet facilities and affects the willingness of farmers to use them.

[0004] To solve the above problems, modular septic tank technology has been gradually promoted in the industry. By splitting the overall structure into multiple independent standard units (such as multiple cylindrical plastic barrels connected in series), transportation and on-site rapid assembly are realized, greatly reducing the difficulty of transportation and construction, and better adapting to the scattered residential environment in rural areas. However, existing modular septic tanks still cannot meet the deep-seated needs of rural toilet reconstruction:

[0005] Firstly, the connection between units mostly uses ordinary sealing rings or simple flanges, which are prone to leakage due to long-term vibration and foundation settlement, resulting in secondary pollution of soil by the treated sewage;

[0006] Secondly, the internal function is single, and most of them only achieve primary sedimentation through natural anaerobic fermentation, lacking of enhanced treatment modules for rural fecal pollution characteristics (high organic matter, high suspended solids, and pathogen-containing), and the COD, ammonia nitrogen and total phosphorus indicators of the effluent often exceed the "Rural Domestic Sewage Discharge Standard", which cannot be directly used for farmland irrigation or ecological water replenishment;

[0007] Thirdly, the reinforcing structure between modules is weak, and the unit is prone to deformation (e.g. barrel body depression) due to collision during transportation. If the interface is misaligned during on-site installation, it cannot be sealed, affecting the overall performance.

[0008] Fourthly, the intelligent management demand of rural toilet replacement is not considered, and the existing septic tank does not integrate liquid level, turbidity, methane concentration and other sensors, which cannot realize real-time early warning of overflow risk or marsh gas accumulation hazard (methane concentration exceeding 5% is prone to explosion), leading to lagging operation and maintenance or even safety accidents.

[0009] Therefore, in view of the core demands of convenient transportation and reliable sealing in the rural toilet replacement scene, it is urgent to develop a modular septic tank and treatment process. SUMMARY

[0010] The purpose of the present application is to provide a modular septic tank and treatment process to solve the problems of difficult transportation and installation, easy leakage and single treatment function of the existing septic tank.

[0011] In order to achieve the above purpose, the present application provides the following technical scheme: a modular septic tank, which is configured as a treatment tank that can be quickly disassembled and assembled and combined flexibly, comprising a septic tank body, a supporting chassis, an end connector and a structural reinforcing frame, wherein: the septic tank body comprises standard unit A, standard unit B and standard unit C connected in series, the standard unit A, the standard unit B and the standard unit C are structurally identical and are respectively used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, the standard unit A, the standard unit B and the standard unit C each comprise a barrel body, a rib plate and a cover plate, the barrel body is in the shape of a cylinder with a large middle and small ends, a top of the barrel body is provided with a cleaning opening and a cover plate that can be opened and closed, and a plurality of rib plates distributed in a ring shape and reinforcing ribs distributed in a longitudinal direction are integrally formed on the outside of the barrel body; the barrel bodies of the standard unit A, the standard unit B and the standard unit B, the standard unit C are connected through the end connector, the end connector comprises a sealing end A, a sealing end B and a connecting gasket, the sealing end A and the sealing end B cooperate and are respectively connected with the ports of the two adjacent barrel bodies.

[0012] Preferably, the supporting chassis is installed on the lower side of the septic tank body, the upper side thereof is connected with the bottom of the septic tank body through a supporting connection structure, and the lower side thereof is connected with a ground foundation installation platform through foundation bolts. The supporting chassis can effectively disperse the load generated by the self-weight of the septic tank, the internal sewage pressure and the external environment, avoid the septic tank from tilting, displacing or deforming due to uneven local stress, especially adapt to the common soft soil foundation or uneven installation site in rural areas, and ensure the structural reliability of the septic tank during long-term operation.

[0013] The connecting gasket preferably comprises a gasket body and positioning portions A and B provided on the gasket body, the gasket body being a circular metal thin plate body with a positioning slot provided in the middle, and the positioning portions A and B being integrally formed on the gasket body in the axial and radial directions.

[0014] The gasket body is sleeved on the sealing end A through the positioning slot, the positioning portion A is outwardly folded in the axial direction and forms a limiting flange, and the limiting flange is buckled with the sealing end B; the outer side of the sealing end B is provided with a limiting slot, and the positioning portion B is in an arc-shaped arch shape, and the arch portion is attached to the circumferential surface of the limiting slot. The positioning portion A is outwardly folded in the axial direction to form a limiting flange, which is buckled with the sealing end B, cooperates with the limiting slot on the outer side of the sealing end B, and the positioning portion B (in an arc-shaped arch shape) is closely attached to the circumferential surface of the limiting slot, thereby forming a double leakage prevention structure of axial limiting + circumferential sealing. The structure design not only limits the axial movement of the sealing end B through the limiting flange, but also enhances the sealing pressure of the interface in the circumferential direction through the attachment of the arc-shaped arch portion and the limiting slot, effectively prevents sewage from leaking through the connecting gap, avoids the loosening or sealing failure of the interface due to vibration, foundation settlement or temperature change, significantly improves the long-term sealing reliability of the connection between units, and prevents secondary pollution of soil and groundwater.

[0015] The front end of the barrel body is integrally formed with a mounting port, the structural reinforcing frame is connected with the mounting ports of the standard unit A, the standard unit B and the standard unit C and tightly clamps and connects the units in series, and the structural reinforcing frame comprises a main reinforcing frame, reinforcing rods and clamping members, the main reinforcing frame comprises a ring-shaped frame and a mounting column connected with each other, and the mounting column is inserted into the mounting port at the front end of the barrel body.

[0016] Preferably, the reinforcing rods include front rod holders and rear rod holders distributed on the front and rear sides of the annular holder, wherein the proximal ends of the front rod holders and the rear rod holders are butted against each other and are locked to the annular holder by bolts, the front rod holders and the rear rod holders are each provided with a clamping member, the clamping member is connected to the longitudinal reinforcing ribs on the outer side of the barrel body, and the front and rear adjacent structural reinforcing holders are inserted between each other and are axially constrained and fixed by locking members. In order to further enhance the overall connection strength, anti-deformation ability and axial constraint reliability between the standard units of the modular septic tank, and to ensure the stability of the structure and the durability of the seal during installation and long-term use, the present application realizes multidimensional reinforcement and collaborative constraint through the optimized design of the structural reinforcing holder. The structural reinforcing holder is designed by combining the main reinforcing holder, the reinforcing rod and the clamping member, forming a triple reinforcement of hoop tightening, longitudinal clamping and axial constraint on the barrel body of the standard unit, which is specifically manifested as follows: the mounting column is inserted into the mounting port at the front end of the barrel body, realizing the positioning and preliminary fixation of the reinforcing holder and the unit; the annular holder surrounds the outer wall of the barrel body, and cooperates with the butt joint and locking of the front rod holder and the rear rod holder to form uniform wrapping and rigid support on the barrel body in the circumferential direction; the clamping member is connected to the longitudinal reinforcing ribs on the outer side of the barrel body, further anchoring the reinforcing holder and the reinforcing ribs of the barrel body, and enhancing the transverse anti-deformation ability; the collaborative action can effectively offset the splicing stress during installation and the unit misalignment or deformation caused by foundation settlement or external force impact during long-term use, and significantly improve the stability of the overall structure.

[0017] Preferably, the inner sides of the standard unit A, the standard unit B and the standard unit C are respectively provided with a separation inner core, a biochemical reaction inner core and a purification inner core, wherein the separation inner core is a solid-liquid separation screen, the biochemical reaction inner core includes a frame and a biochemical reaction filler filled in the frame (such as polyurethane filler for efficient denitrification or iron-carbon composite filler for enhanced phosphorus removal), and the purification inner core is a micro-electric field flocculation module for deep treatment of effluent.

[0018] Preferably, a sensor module is integrated in the inner side of the top cover plate of the standard unit A, the standard unit B and the standard unit C, and the sensor module at least includes a liquid level sensor, a turbidity sensor and a methane concentration sensor.

[0019] A treatment process of a modular septic tank, which is realized based on the above-mentioned modular septic tank and includes the following steps.

[0020] Step 1: separation and primary fermentation, domestic sewage enters the standard unit A, and is preliminarily filtered by the built-in solid-liquid separation screen to intercept large-particle solids; the sensor module monitors the sludge liquid level in real time, and issues a cleaning warning when reaching a preset threshold, and the sewage is subjected to anaerobic fermentation at the bottom of the unit A to produce primary degradation.

[0021] Step 2: Targeted biochemical reaction and advanced treatment. The pretreated wastewater flows into standard unit B and undergoes targeted degradation through a configurable biochemical reaction core. When using nitrification-denitrification biological packing, efficient denitrification is achieved, and when using polyphosphate-supported packing, enhanced phosphorus removal is achieved. The turbidity changes in the water are monitored by a sensor module to evaluate the treatment efficiency.

[0022] Step 3: Deep purification and resource recovery. Wastewater enters standard unit C, where residual suspended solids are coagulated and settled by the micro-electric field flocculation module. The sensor module monitors and provides early warning of biogas safety concentration, and finally the purified water is discharged in compliance with standards.

[0023] Compared with existing technologies, the present invention has the following advantages: The present invention adopts a modular design and integrates intelligent monitoring and multiple reinforcement functions, enabling rapid deployment of septic tanks and meeting the needs of convenient transportation and low maintenance costs in rural decentralized toilet renovation scenarios. Specific technical effects include the following:

[0024] 1. Through innovative modular structure and multi-reinforcement sealing design, the problems of difficult transportation and installation and easy leakage of traditional septic tanks are solved; each standard unit has a consistent structure and small size, and can be transported separately to adapt to narrow village roads; the end connectors and structural reinforcement frame work together to form reliable axial constraints and radial clamping, effectively resisting the impact of foundation settlement and vibration, ensuring the long-term stability of the connection and sealing between units, and preventing sewage leakage from polluting the soil and groundwater.

[0025] 2. By integrating functional treatment cores within standard units, a tiered and in-depth treatment of rural manure has been achieved. This process breaks through the traditional single anaerobic fermentation mode, allowing for flexible configuration of packing materials according to water quality characteristics. It specifically enhances nitrogen and phosphorus removal as well as flocculation and sedimentation functions, significantly improving effluent quality and making it easier to meet discharge or reuse standards, thus promoting the safe and resource-based utilization of manure.

[0026] 3. By integrating a multi-parameter sensor module inside the cover plate, real-time intelligent monitoring of the septic tank's operating status is achieved, which can promptly warn of sludge overflow, decreased treatment efficiency, and biogas explosion risk, greatly improving operation and maintenance efficiency and safety. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0028] Figure 1 This is a schematic diagram of the structure of Embodiment 1 of the present invention;

[0029] Figure 2 This is a schematic diagram of the structure of standard unit A in Embodiment 1 of the present invention;

[0030] Figure 3 This is a schematic diagram showing the state when the end connector connects standard unit A and standard unit B in Embodiment 1 of the present invention;

[0031] Figure 4 This is a schematic diagram of the connecting gasket structure in Embodiment 1 of the present invention;

[0032] Figure 5 This is a schematic diagram of the structure of Embodiment 2 of the present invention;

[0033] Figure 6 This is a schematic diagram of the structural reinforcement frame in Embodiment 2 of the present invention.

[0034] In the picture:

[0035] 1. Standard Unit A; 2. Standard Unit B; 3. Standard Unit C; 4. Barrel body; 401. Mounting port; 5. Rib plate; 6. Cover plate; 7. Reinforcing rib; 8. End connector; 81. Sealing end A; 82. Sealing end B; 83. Connecting gasket; 831. Pad body; 832. Positioning part A; 833. Positioning part B; 9. Structural reinforcement frame; 91. Main reinforcement frame; 92. Reinforcing rod; 93. Clamping device; 10. Support base frame. Detailed Implementation

[0036] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0037] As attached Figure 1 To be continued Figure 4 As shown:

[0038] Example 1: This invention provides a modular septic tank, which is configured as a treatment tank that can be quickly disassembled and flexibly combined. The treatment tank includes a septic tank body, a supporting base frame 10, and end connectors 8, wherein:

[0039] The septic tank body includes standard unit A1, standard unit B2 and standard unit C3 connected in series. Standard unit A1, standard unit B2 and standard unit C3 have the same structure and are used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, respectively. Standard unit A1, standard unit B2 and standard unit C3 all include a barrel 4, ribs 5 and cover plate 6. The barrel 4 is a cylindrical shape that is larger in the middle and smaller at both ends. The top of the barrel 4 is provided with a cleaning port and an openable cover plate 6. The outer side of the barrel 4 is integrally formed with several circumferentially distributed ribs 5 and longitudinally distributed reinforcing ribs 7.

[0040] The barrels 4 of standard unit A1, standard unit B2, and standard unit B2 and standard unit C3 are connected at their proximal ends by end connectors 8. The end connectors 8 include sealing end A81, sealing end B82, and connecting gasket 83. Sealing end A81 and sealing end B82 are matched and connected to the ports of the two proximal barrels 4 respectively. The connecting gasket 83 includes a pad body 831 and positioning parts A832 and B833 provided on the pad body 831. The pad body 831 is a circular thin metal plate base with a mounting positioning groove in the middle. Positioning parts A832 and B833 are integrally formed in the axial and radial directions of the pad body 831.

[0041] The support frame 10 is installed on the lower side of the septic tank body. Its upper side is connected to the bottom of the septic tank body through a support connection structure, and its lower side is connected to the ground foundation installation platform through anchor bolts. The support frame 10 can effectively distribute the septic tank's own weight, internal sewage pressure and external environmental loads, and prevent the septic tank from tilting, displacing or deforming due to uneven local stress. It is especially suitable for soft soil foundations or uneven installation sites common in rural areas, and ensures the structural reliability of the septic tank for long-term operation.

[0042] 1. In one embodiment of the present invention, the pad 831 is fitted onto the sealing end A81 through a positioning groove. The positioning part A832 is folded outward along the axial direction to form a limiting flange, which is engaged with the sealing end B82. A limiting groove is provided on the outer side of the sealing end B82. The positioning part B833 is arc-shaped and arched, and its arched part is in contact with the circumferential surface of the limiting groove. The positioning part A832 is folded outward along the axial direction to form a limiting flange, which is engaged with the sealing end B82. Combined with the limiting groove on the outer side of the sealing end B82 and the tight fit between the positioning part B833 (arc-shaped arch) and the circumferential surface of the limiting groove, a double leak-proof structure of axial limiting and circumferential sealing is formed. This structural design not only restricts the axial movement of the sealing end B82 through the limiting flange, but also enhances the circumferential sealing pressure of the interface through the fit between the arc-shaped arch and the limiting groove. This effectively prevents sewage from leaking through the connection gap, avoids interface loosening or sealing failure caused by vibration, foundation settlement or temperature changes, significantly improves the long-term sealing reliability of the connection between units, and prevents secondary pollution of soil and groundwater.

[0043] 2. In one embodiment of the present invention, the inner sides of standard unit A1, standard unit B2 and standard unit C3 are respectively provided with a separation core, a biochemical reaction core and a purification core, wherein the separation core is a solid-liquid separation screen, the biochemical reaction core includes a frame and biochemical reaction packing (such as polyurethane packing for high-efficiency denitrification or iron-carbon composite packing for enhanced phosphorus removal) filled in the frame, and the purification core is a micro-electric field flocculation module for deep treatment of effluent.

[0044] 3. In one embodiment of the present invention, a sensor module is integrated inside the top cover plate 6 of standard unit A1, standard unit B2 and standard unit C3. The sensor module includes at least a liquid level sensor, a turbidity sensor and a methane concentration sensor.

[0045] Working principle: The modular septic tank in Example 1 achieves a streamlined operation for sewage treatment through the modular series design of standard units A1, B2 and C3; each unit is reliably sealed and connected through end connectors 8, and the overall structural stability is ensured by the supporting frame 10; the dedicated functional core configured inside each standard unit undertakes the treatment functions of solid-liquid separation, biochemical degradation and deep purification, and together with the integrated sensor module, they form a complete sewage treatment solution that can meet the needs of decentralized toilet renovation in rural areas.

[0046] As attached Figure 1 To be continued Figure 6 As shown:

[0047] Example 2: This invention provides a modular septic tank, which is configured as a treatment tank that can be quickly disassembled and flexibly combined. The treatment tank includes a septic tank body, a supporting base frame 10, end connectors 8, and a structural reinforcement frame, wherein:

[0048] The septic tank body includes standard unit A1, standard unit B2 and standard unit C3 connected in series. Standard unit A1, standard unit B2 and standard unit C3 have the same structure and are used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, respectively. Standard unit A1, standard unit B2 and standard unit C3 all include a barrel 4, ribs 5 and cover plate 6. The barrel 4 is a cylindrical shape that is larger in the middle and smaller at both ends. The top of the barrel 4 is provided with a cleaning port and an openable cover plate 6. The outer side of the barrel 4 is integrally formed with several circumferentially distributed ribs 5 and longitudinally distributed reinforcing ribs 7.

[0049] The near ends of the barrels 4 of standard unit A1, standard unit B2, and standard unit B2 and standard unit C3 are connected by end connectors 8. The end connectors 8 include sealing end A81, sealing end B82 and connecting gasket 83. The sealing end A81 and sealing end B82 cooperate and are respectively connected to the ports of the two near barrels 4.

[0050] The supporting base 10 is installed on the lower side of the septic tank body. Its upper side is connected to the bottom of the septic tank body through a supporting connection structure, and its lower side is connected to the ground foundation installation platform through anchor bolts. The supporting base 10 can effectively distribute the septic tank's own weight, internal sewage pressure, and loads generated by the external environment, preventing the septic tank from tilting, shifting, or deforming due to uneven local stress. It is especially suitable for soft soil foundations or uneven installation sites common in rural areas, ensuring the structural reliability of the septic tank during long-term operation.

[0051] The front end of the barrel 4 is integrally formed with an installation port 401. The structural reinforcement frame is connected to the installation ports 401 of standard unit A1, standard unit B2 and standard unit C3 and clamps each unit in series. The structural reinforcement frame 9 includes a main reinforcement frame 91, a reinforcement rod 92 and a clamping member 93. The main reinforcement frame 91 includes a connected ring frame and a mounting column, wherein the mounting column is inserted into the installation port 401 at the front end of the barrel 4.

[0052] 1. In one embodiment of the present invention, the reinforcing rod 92 includes a front rod and a rear rod distributed on the front and rear sides of the ring frame, wherein the near ends of the front rod and the rear rod are connected and locked to the ring frame by bolts, and the front rod and the rear rod are each equipped with a clamp 93, which is connected to the longitudinal reinforcing rib 7 on the outer side of the barrel 4; the front and rear adjacent structural reinforcing frames 9 are inserted and fixed by axial constraint by locking members.

[0053] To further enhance the overall connection strength, deformation resistance, and axial constraint reliability between the standard units of the modular septic tank, and to ensure structural stability and long-term sealing during installation and long-term use, this embodiment achieves multi-dimensional reinforcement and collaborative constraint through the optimized design of the structural reinforcement frame 9. The structural reinforcement frame 9, through the combined design of the main reinforcement frame 91, reinforcement rod 92, and clamping device 93, forms a triple reinforcement of the standard unit barrel 4, consisting of circumferential clamping, longitudinal clamping, and axial constraint. Specifically, the mounting column is inserted into the mounting port 401 at the front end of the barrel 4 to achieve the positioning and initial fixation of the reinforcement frame and the unit; the ring frame surrounds the outer wall of the barrel 4, and together with the docking and locking of the front and rear rod frames, it forms a uniform wrap and rigid support for the barrel 4 from the circumference; the clamping device 93 is connected to the longitudinal reinforcing rib 7 on the outer side of the barrel 4, further anchoring the reinforcement frame and the reinforcing rib 7 of the barrel 4, enhancing the lateral deformation resistance; this synergistic effect can effectively offset the splicing stress during installation and the unit misalignment or deformation caused by foundation settlement or external impact during long-term use, significantly improving the stability of the overall structure.

[0054] Working Principle: The difference between Example 2 and Example 1 is that Example 2, based on the basic structure of Example 1, adds a structural reinforcement frame 9 consisting of a main reinforcement frame 91, reinforcement rods 92, and clamping components 93. Through the innovative design of the structural reinforcement frame 9, Example 2 achieves triple reinforcement of each standard unit through circumferential clamping, longitudinal holding, and axial constraint. This triple reinforcement mechanism effectively resists unit misalignment or deformation that may be caused by installation stress, foundation settlement, and external impacts. While ensuring the sealing performance of the end connectors 8, it significantly improves the rigidity and long-term operational reliability of the overall septic tank structure.

[0055] A modular septic tank treatment process, based on the modular septic tanks in Embodiments 1 and 2, specifically includes the following steps:

[0056] Step 1: Separation and primary fermentation. Domestic sewage enters standard unit A1 and undergoes preliminary filtration through its built-in solid-liquid separation screen to intercept large solid particles. The sensor module monitors the sludge level in real time and issues a cleaning warning when it reaches a preset threshold. The sewage undergoes anaerobic fermentation at the bottom of standard unit A1, resulting in primary degradation.

[0057] Step 2: Targeted biochemical reaction and advanced treatment. The pretreated wastewater flows into standard unit B2 and undergoes targeted degradation through the configurable biochemical reaction core. When using nitrification-denitrification biological packing, efficient nitrogen removal is achieved, and when using polyphosphate-supported packing, enhanced phosphorus removal is achieved. The turbidity changes in the water are monitored by the sensor module to evaluate the treatment efficiency.

[0058] Step 3: Deep purification and resource recovery. Wastewater enters standard unit C3, where residual suspended solids are coagulated and settled by the micro-electric field flocculation module. The sensor module monitors and provides early warning of biogas safety concentration, and finally the purified water is discharged in compliance with standards.

[0059] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A modular septic tank, which is configured as a rapid disassembly, flexible combination treatment tank, characterized in that: The treatment tank comprises a septic tank body, a supporting chassis (10), a end connector (8) and a structure reinforcing frame, wherein the septic tank body comprises a standard unit A (1), a standard unit B (2) and a standard unit C (3) connected in series, the standard unit A (1), the standard unit B (2) and the standard unit C (3) are identical in structure and are respectively used for primary anaerobic decomposition, deep degradation and clarification separation of sewage, the standard unit A (1), the standard unit B (2) and the standard unit C (3) each comprise a barrel body (4), a rib plate (5) and a cover plate (6), the barrel body (4) is in a cylindrical shape with a large middle and small ends, a top of the barrel body (4) is provided with a cleaning opening and a cover plate (6) which can be opened and closed, a plurality of rib plates (5) distributed in a ring direction and a reinforcing rib (7) distributed in a longitudinal direction are integrally formed on an outer side of the barrel body (4); the barrel bodies (4) of the standard unit A (1), the standard unit B (2) and the standard unit B (2) and the standard unit C (3) are connected through the end connector (8) at proximal ends, the end connector (8) comprises a sealing end A (81), a sealing end B (82) and a connecting gasket (83), the sealing end A (81) and the sealing end B (82) are matched and connected with ports of two proximal barrel bodies (4) respectively.

2. A modular septic tank according to claim 1, characterised in that: The supporting chassis (10) is arranged on the lower side of the septic tank body, the upper side thereof is connected with the bottom of the septic tank body through a supporting connection structure, and the lower side thereof is connected with a ground foundation installation platform through a foundation bolt.

3. A modular septic tank according to claim 1, wherein: The connecting gasket (83) comprises a gasket body (831) and a positioning part A (832) and a positioning part B (833) arranged on the gasket body (831), the gasket body (831) is a circular metal thin plate base body with an installation positioning groove arranged in the middle, and the positioning part A (832) and the positioning part B (833) are integrally formed on the axial direction and the radial direction of the gasket body (831).

4. A modular septic tank according to claim 3, wherein: The gasket body (831) is sleeved on the sealing end A (81) through the positioning groove, the positioning part A (832) is outwardly folded along the axial direction and forms a limiting flange, the limiting flange is buckled with the sealing end B (82); a limiting groove is arranged on the outer side of the sealing end B (82), the positioning part B (833) is in an arc shape and is arched, and the arch part is attached to the circumferential surface of the limiting groove.

5. A modular septic tank according to claim 1, wherein: The barrel body (4) is integrally formed with an installation port (401) at the front end, the structure reinforcing frame is connected with the installation port (401) of the standard unit A (1), the standard unit B (2) and the standard unit C (3) and tightly connects and connects the units in series, and the structure reinforcing frame (9) comprises a main reinforcing frame (91), a reinforcing rod (92) and a clamping part (93), the main reinforcing frame (91) comprises a ring frame and an installation column connected with each other, and the installation column is inserted into the installation port (401) at the front end of the barrel body (4).

6. A modular septic tank according to claim 5, wherein: The reinforcing rod (92) comprises a front rod frame and a rear rod frame distributed on the front and rear sides of the ring frame, wherein the proximal ends of the front rod frame and the rear rod frame are connected and locked with the ring frame through bolts, the front rod frame and the rear rod frame are both provided with clamping pieces (93), the clamping pieces (93) are connected with the longitudinal reinforcing ribs (7) on the outer side of the barrel body (4), and the front and rear adjacent structural reinforcing frames (9) are inserted and fixed in the axial direction through locking pieces.

7. A modular septic tank according to claim 1, wherein: The inner sides of the standard unit A (1), the standard unit B (2) and the standard unit C (3) are respectively provided with a separation inner core, a biochemical reaction inner core and a purification inner core, wherein the separation inner core is a solid-liquid separation screen, the biochemical reaction inner core comprises a frame and biochemical reaction fillers filled in the frame, and the purification inner core is a micro-electric field flocculation module for deep treatment of effluent.

8. A modular septic tank according to claim 1, characterized in that: The inner sides of the top cover plates (6) of the standard unit A (1), the standard unit B (2) and the standard unit C (3) are integrated with sensor modules, and the sensor modules at least comprise liquid level sensors, turbidity sensors and methane concentration sensors.

9. A treatment process for a modular septic tank, implemented based on the modular septic tank of any one of claims 1-8, characterized in that: The method comprises the following steps: Step 1: separation and primary fermentation, domestic sewage enters the standard unit A (1), and is preliminarily filtered through the built-in solid-liquid separation screen to intercept large-particle solids; The sensor module monitors the sludge liquid level in real time, and issues a dredging warning when a preset threshold is reached, the sewage is subjected to anaerobic fermentation at the bottom of the standard unit A (1) to produce primary degradation; Step 2: directional biochemical reaction and deep treatment, the pretreated sewage flows into the standard unit B (2), and is subjected to directional degradation through the configured biochemical reaction inner core, the sensor module monitors the turbidity change of the water body to evaluate the treatment efficiency; Step 3: deep purification and resource recovery, the sewage enters the standard unit C (3), and the residual suspended solids are coagulated and settled through the micro-electric field flocculation module, the sensor module monitors and warns the safe concentration of biogas, and finally the purified water is discharged up to the standard.

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