New energy assembly type municipal sewage treatment process and equipment

Abstract

The invention discloses a new energy assembly type municipal sewage treatment process and equipment, and relates to the field of sewage treatment.The new energy assembly type municipal sewage treatment equipment comprises an assembly type pool body which comprises a central anaerobic pool, an inner ring anoxic pool located on the outer side of the central anaerobic pool and an outer ring aerobic subarea located on the outer side of the inner ring anoxic pool; the rear anoxic zone is positioned on the outer side of the inner-ring anoxic tank and is positioned on one side of the outer-ring aerobic zone; the membrane zone is positioned on the outer side of the inner-ring anoxic tank and is positioned on one side of the rear anoxic zone; and a base; the volume ratio of the central anaerobic tank to the inner-ring anoxic tank to the outer-ring aerobic zone to the rear anoxic zone to the membrane zone is 1: 2: 4: 2: 1 under the total nitrogen removal requirement; and the volume ratio is 1: 2: 3: 1: 1 under the condition of no total nitrogen removal requirement. According to the invention, rapid deployment can be carried out, material waste is reduced through modular design, and the construction period is greatly shortened; and meanwhile, the flexibility is high, migration and repeated use are easy, and the requirements of different scales and places are met.

Description

Technical Field

[0001] The present invention mainly relates to the technical field of sewage treatment, and specifically to a new energy assembled municipal sewage treatment process and equipment. Background Art

[0002] Municipal sewage treatment is an important part of urban environmental protection. Its goal is to remove harmful substances in urban sewage or convert them into harmless substances through a series of treatment processes and technical means, thereby protecting the water environment and human health. The discharge of urban sewage increases year by year, and the composition of sewage is becoming increasingly complex. If it is discharged directly without treatment, it will cause serious pollution to the water environment and affect the ecological balance and human health.

[0003] With the acceleration of urbanization, the amount of urban sewage discharge continues to increase. The traditional civil engineering sewage treatment plant has a long construction period, high cost, large area, and is not easy to relocate and reuse. At the same time, considering the high energy consumption of traditional sewage treatment, a photovoltaic bracket installation base is set on the prefabricated sewage treatment system configuration to facilitate the rapid and efficient matching of photovoltaic new energy systems to reduce system operation energy consumption. Summary of the invention

[0004] Based on this, the purpose of the present invention is to provide a new energy assembled municipal sewage treatment process and equipment to solve the technical problems raised in the above background technology.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A new energy assembled municipal sewage treatment equipment, comprising an assembled tank body, the assembled tank body comprising a central anaerobic tank, an inner anoxic tank located outside the central anaerobic tank, an outer aerobic partition located outside the inner anoxic tank, a rear anoxic partition located outside the inner anoxic tank and on one side of the outer aerobic partition, a membrane zone located outside the inner anoxic tank and on one side of the rear anoxic partition; and a base;

[0007] The volume ratio of the central anaerobic tank, the inner anoxic tank, the outer aerobic partition, the post-anoxic partition, and the membrane zone is 1:2:4:2:1 when there is a total nitrogen removal requirement; and the volume ratio is 1:2:3:1:1 when there is no total nitrogen removal requirement;

[0008] The top of the assembled pool body is also provided with a straight horizontal bridge, and a circular bridge located on the outer side of the top of the inner circle anoxic pool.

[0009] Preferably, a sewage input pipe is provided on the top of the central anaerobic tank and on one side of the straight horizontal bridge;

[0010] The central anaerobic tank is a cylindrical annular body composed of a plurality of first arc-shaped plates with the same outer diameter structure; the plurality of first arc-shaped plates are arranged in four layers from top to bottom, and two adjacent first arc-shaped plates are connected by bolts and nuts;

[0011] The central anaerobic tank is located at the center of the base;

[0012] The side wall of the central anaerobic tank is provided with at least one return pipe interface and at least one sewage pipe interface.

[0013] Preferably, the inner anoxic pool is a cylindrical annular body composed of a plurality of second arc-shaped plates with the same outer diameter structure;

[0014] The plurality of second curved plates are arranged in four layers from top to bottom, wherein the thickness of the second curved plates in the first layer is the same as that in the fourth layer, and the thickness of the second curved plates in the second layer is the same as that in the third layer;

[0015] Two adjacent second arc-shaped plates are connected by bolts and nuts;

[0016] The outer wall of the inner anoxic pool is provided with at least one return pipe interface and at least one sewage pipe interface.

[0017] Preferably, the outer aerobic partition, the post-anoxic partition, and the membrane zone together constitute the outer pool body ring;

[0018] A partition partition 1 is provided between the outer aerobic partition and the post-anoxic partition, a partition partition 2 is provided between the post-anoxic partition and the membrane zone, and a partition partition 3 is provided between the membrane zone and the outer aerobic partition.

[0019] Preferably, the outer ring of the cell body is a cylindrical annular body composed of a plurality of third arc-shaped plates with the same outer diameter structure;

[0020] The plurality of third curved plates are arranged in four layers from top to bottom, and among the four layers of the third curved plates, the thickness of the third curved plates of the first layer and the fourth layer is the same, and the thickness of the third curved plates of the second layer and the third layer is the same;

[0021] Two adjacent third arc-shaped plates are connected via bolts and nuts.

[0022] Preferably, at least one lightning protection assembly is provided on the top of the outer wall of the outer ring of the cell body.

[0023] Preferably, at least one sewage pipe interface is provided on one side wall of the partition partition and on the second side wall of the partition partition;

[0024] The three side walls of the partition are provided with at least one return pipe interface and at least one sewage pipe interface.

[0025] Preferably, the connection interfaces and connecting parts used in the assembled pool body are all of standardized design.

[0026] Preferably, a photovoltaic mounting bracket is also provided on the top of the assembled pool body.

[0027] A new energy assembled municipal sewage treatment process is also provided, and the treatment process steps are as follows:

[0028] S1. Municipal sewage reception: First, sewage from the municipal pipe network is received;

[0029] S2. Hydraulic screen filtration: The sewage is initially filtered through a hydraulic screen to remove larger particles of suspended matter and impurities;

[0030] S3, anaerobic tank treatment: the sewage after the hydraulic screen enters the central anaerobic tank, under anaerobic conditions, part of the organic matter in the sewage begins to undergo anaerobically decompose;

[0031] S4, anoxic tank treatment: denitrification is carried out in the inner anoxic tank to further remove nitrogen from the sewage;

[0032] It also includes backflow treatment: a part of the sewage returns to the central anaerobic tank through "backflow 1" to mix with the newly entered sewage to increase the efficiency of the anaerobic reaction; the backflow 1 is 0.5 to 1 times the flow rate;

[0033] S5. Aerobic pool treatment: In the outer aerobic zone, the organic matter in the sewage is aerobically decomposed by a large number of microorganisms, converted into carbon dioxide and water, and produces biomass;

[0034] S6, post-anoxic pool treatment: further treat the effluent from the inner anoxic pool in the post-anoxic partition to optimize the anoxic conditions and improve the treatment effect;

[0035] It also includes a backflow treatment: a portion of the sewage returns to the inner anoxic pool through "backflow 2" to mix with the newly entered sewage to increase the efficiency of the anoxic reaction; the backflow 2 is 1 to 3 times the flow rate;

[0036] S7, membrane pool treatment: The sewage then enters the membrane area, where solid-liquid separation is performed through membrane technology to remove suspended solids and some soluble solids, while recovering part of the biomass as "residual sludge";

[0037] Among them, it also includes backflow treatment: a part of the sewage returns to the outer aerobic partition through "backflow 3" and mixes with the newly entered sewage to increase the efficiency of aerobic decomposition; the backflow 3 is 3 times the flow rate;

[0038] S8, sludge dehydration: the remaining sludge enters the sludge dehydration system, and the water in it is removed by mechanical or chemical methods to form dried sludge for subsequent treatment or disposal;

[0039] S9, clean water tank: Finally, the sewage after the above series of treatment steps becomes clean water and is stored in the clean water tank. It meets the discharge standards and can be used for irrigation, landscape replenishment or as other non-drinking water purposes.

[0040] In summary, the present invention mainly has the following beneficial effects:

[0041] The present invention adopts modular prefabricated components to form the main structure of the sewage treatment equipment. All components are prefabricated in the factory and only need to be assembled on site. At the same time, the quick connection interface adopts a standardized design to ensure fast and stable connection between modules. The detachable foundation is convenient for the relocation and reconstruction of the sewage treatment plant.

[0042] Advantage of rapid deployment: prefabricated components and quick connection interfaces greatly shorten the construction period of sewage treatment plants;

[0043] Cost-effective: Modular design reduces material waste and improves construction efficiency, thereby reducing overall costs;

[0044] Flexibility: easy to move and reuse, adapting to the needs of different scales and locations;

[0045] Secondly, the integrated control system improves sewage treatment efficiency and reduces energy consumption and environmental pollution. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] Figure 1 It is a plan view of the overall structure of the assembled pool body of the present invention;

[0047] Figure 2 It is a plan view of the overall outer ring of the cell body and the installation structure of the present invention;

[0048] Figure 3 This is an expanded view of the overall structure of the outer ring of the cell body of the present invention;

[0049] Figure 4 This is a vertical layout diagram of the integral bolts of the outer ring of the cell body of the present invention;

[0050] Figure 5 It is a plan view of the overall structure and installation structure of the inner ring anoxic pool of the present invention;

[0051] Figure 6 It is an expanded view of the overall structure of the inner circle anoxic pool of the present invention;

[0052] Figure 7 This is a vertical layout diagram of the overall bolts of the inner ring anoxic pool of the present invention;

[0053] Figure 8 It is a plan view of the overall central anaerobic tank and its installation structure of the present invention;

[0054] Fig. 9 It is an expanded view of the overall structure of the central anaerobic tank of the present invention;

[0055] Fig.10 This is a vertical layout diagram of the overall bolts of the central anaerobic tank of the present invention;

[0056] Fig.11 It is a plan view of the lightning protection assembly and connection of the present invention;

[0057] Fig.12 It is a cross-sectional schematic diagram of bolt sealing at the stirrup of the present invention;

[0058] Fig.13 It is a schematic cross-sectional diagram of a single bolt seal of the present invention;

[0059] Fig.14 This is an example diagram of the overall equipment deployment of the sewage treatment process of the present invention;

[0060] Fig.15 It is a framework diagram of the sewage treatment process of the present invention;

[0061] Fig.16 It is a schematic diagram of the sewage flow line and return flow of the overall process of the present invention.

[0062] Description of the drawings: 10. Assembled tank body; 11. Central anaerobic tank; 12. Inner anoxic tank; 13. Outer aerobic partition; 14. Rear anoxic partition; 15. Membrane area; 16. Base; 17. One-shaped horizontal bridge; 18. Circular bridge; 19. Outer ring of the tank body; 111. Sewage input pipe; 112. First arc plate; 121. Second arc plate; 191. Third arc plate; 192. Lightning protection assembly; a. Return pipe interface; b. Sewage pipe interface; c1. Partition partition one; c2. Partition partition two; c3. Partition partition three; 1. Gasket; 2. Sealant; 3. MBR membrane assembly; 4. Fan and pump; 5. Clear water tank; 6. Dosing room; 7. Sludge dewatering room; 8. Hydraulic screen. DETAILED DESCRIPTION

[0063] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0064] Example

[0065] like Figure 1 , 3, 4, 6, 7, 9, and 10, comprising an assembled tank body 10, wherein the central anaerobic tank 11 is a cylindrical ring body composed of a plurality of first curved plates 112 having the same outer diameter structure; the plurality of first curved plates 112 are sequentially arranged in four layers from top to bottom, and two adjacent first curved plates 112 are connected by bolts and nuts; the inner anoxic tank 12 is a cylindrical ring body composed of a plurality of second curved plates 121 having the same outer diameter structure;

[0066] The plurality of second curved plates 121 are arranged in four layers from top to bottom. Among the four layers of the second curved plates 121, the thickness of the second curved plates 121 of the first layer and the fourth layer is the same, and the thickness of the second curved plates 121 of the second layer and the third layer is the same;

[0067] The outer ring 19 of the pool body is a cylindrical ring body composed of a plurality of third arc-shaped plates 191 with the same outer diameter structure;

[0068] A plurality of third curved plates 191 are arranged in four layers from top to bottom. Among the four layers of the third curved plates 191, the thickness of the third curved plates 191 of the first layer and the fourth layer is the same, and the thickness of the third curved plates 191 of the second layer and the third layer is the same. A straight horizontal bridge 17 is also provided on the top of the assembled pool body 10, as well as a circular bridge 18 located on the outside of the top of the inner circle anoxic pool 12.

[0069] It should be noted that in this embodiment, in the link of rapid assembly and deployment, all components of the assembled pool body 10 are prefabricated workpieces in the factory. The first curved plate 112, the second curved plate 121 and the third curved plate 191 are all prefabricated parts with the same outer diameter structure and different thicknesses. According to the actual installation requirements, sufficient quantities and corresponding auxiliary installation parts can be prepared for on-site installation and construction;

[0070] Among them, all auxiliary components and quick connection interfaces adopt standardized design, which greatly shortens the installation and construction time of the processing equipment;

[0071] The straight horizontal bridge 17 and the circular bridge 18 are provided to facilitate the later inspection and maintenance work after the assembly is completed.

[0072] like Figure 1 , 2 , 14, 15, and 16, S1, municipal sewage reception: first receiving sewage from the municipal pipe network;

[0073] S2. Hydraulic screen filtration: The sewage is initially filtered through a hydraulic screen to remove larger particles of suspended matter and impurities;

[0074] S3. Anaerobic tank treatment: The sewage that has passed through the hydraulic screen enters the central anaerobic tank 11. Under anaerobic conditions, part of the organic matter in the sewage begins to undergo anaerobically decomposed.

[0075] S4, anoxic tank treatment: denitrification is carried out in the inner anoxic tank 12 to further remove nitrogen from the sewage;

[0076] It also includes diversion treatment: a part of the sewage returns to the central anaerobic tank 11 through "return 1" to mix with the newly entered sewage to increase the efficiency of the anaerobic reaction; the other part of the sewage directly enters the outer aerobic partition 13; the return 1 is 0.5 to 1 times the flow rate;

[0077] The assembled tank body 10 includes a central anaerobic tank 11, an inner anoxic tank 12 located outside the central anaerobic tank 11, and the volume ratio of the central anaerobic tank 11, the inner anoxic tank 12, the outer aerobic partition 13, the rear anoxic partition 14, and the membrane area 15 is 1:2:4:2:1 when there is a total nitrogen removal requirement; and the volume ratio is 1:2:3:1:1 when there is no total nitrogen removal requirement; a sewage input pipe 111 is provided at the top of the central anaerobic tank 11 and on one side of the straight cross bridge 17; the central anaerobic tank 11 is located at the center of the base 16;

[0078] At least one return pipe interface a and at least one sewage pipe interface b are provided on the side wall of the central anaerobic tank 11, and two adjacent second arc-shaped plates 121 are connected by bolts and nuts;

[0079] The outer wall of the inner anoxic pool 12 is provided with at least one return pipe interface a and at least one sewage pipe interface b.

[0080] It should be noted that, in this embodiment, after the assembly tank body 10 is completed, it is coordinated with the MBR membrane assembly 3; the fan and pump 4; the clean water tank 5; the dosing room 6, the sludge dewatering room 7, the hydraulic screen 8 and other necessary equipment to work together to purify the municipal sewage;

[0081] In the sewage treatment process;

[0082] First, sewage is received from the municipal pipe network; it is pumped out from a designated sewage well or sewage source by a pump; the sewage is initially filtered through a hydraulic screen to remove larger particles of suspended solids and impurities; and then it enters the central anaerobic tank 11 through a sewage input pipe 111;

[0083] The sewage that has passed through the hydraulic screen enters the central anaerobic tank 11, where part of the organic matter in the sewage begins to undergo anaerobically decomposition under anaerobic conditions;

[0084] Denitrification is carried out in the inner anoxic pool 12 to further remove nitrogen from the sewage;

[0085] It also includes backflow treatment: a part of the sewage returns to the central anaerobic tank 11 through "backflow 1" and mixes with the newly entered sewage to increase the efficiency of the anaerobic reaction; the backflow 1 is 0.5 to 1 times the flow rate.

[0086] like Figure 1 , 5 , 8, 14, 15, 16, S5, aerobic pool treatment: in the outer aerobic zone 13, the organic matter in the sewage is aerobically decomposed by a large number of microorganisms, converted into carbon dioxide and water, and produces biomass;

[0087] S6, post-anoxic pool treatment: further treating the effluent from the inner anoxic pool 12 in the post-anoxic partition 14 to optimize the anoxic conditions and improve the treatment effect;

[0088] Among them, it also includes return flow treatment: a part of the sewage returns to the inner anoxic pool 12 through "return flow 2" to mix with the newly entered sewage to increase the efficiency of the anoxic reaction; the return flow 2 is 1 to 3 times the flow rate;

[0089] S7, membrane tank treatment: the sewage then enters the membrane zone 15, where solid-liquid separation is performed by membrane technology to remove suspended solids and some dissolved solids, while recovering part of the biomass as "residual sludge";

[0090] The process also includes diversion: a part of the sewage returns to the middle aerobic partition 13 through "return flow 3" to mix with the newly entered sewage to increase the efficiency of aerobic decomposition. The return flow 3 is 3 times the flow rate;

[0091] S8. Sludge dewatering: The remaining sludge enters the sludge dewatering system, where the moisture is removed through mechanical or chemical methods to form dried sludge for subsequent treatment or disposal.

[0092] S9, clean water tank: Finally, the sewage after the above series of treatment steps becomes clean water, which is stored in the clean water tank and meets the discharge standard. It can be used for irrigation, landscape water replenishment or other non-drinking water purposes; the outer aerobic partition 13, the post-anoxic partition 14, and the membrane area 15 together constitute the outer pool outer circle 19;

[0093] An outer aerobic partition 13 located outside the inner anoxic pool 12, a rear anoxic partition 14 located outside the inner anoxic pool 12 and located on one side of the outer aerobic partition 13, a membrane area 15 located outside the inner anoxic pool 12 and located on one side of the rear anoxic partition 14; and a base 16; a partition partition 1 c1 is provided between the outer aerobic partition 13 and the rear anoxic partition 14, a partition partition 2 c2 is provided between the rear anoxic partition 14 and the membrane area 15, and a partition partition 3 c3 is provided between the membrane area 15 and the outer aerobic partition 13;

[0094] Two adjacent third arc-shaped plates 191 are connected by bolts and nuts; at least one lightning protection assembly 192 is provided on the top of the outer wall of the outer ring 19 of the pool body; at least one sewage pipe interface b is provided on the side wall of the partition 1 c1 and the side wall of the partition 2 c2;

[0095] At least one return pipe interface a and at least one sewage pipe interface b are arranged on the side wall of the partition three c3; the connection interfaces and connecting parts adopted by the assembled pool body 10 are all of standardized design; a photovoltaic mounting bracket is also arranged on the top of the assembled pool body 10.

[0096] It should be noted that, in this embodiment, in the outer aerobic zone 13, the organic matter in the sewage is aerobically decomposed by a large number of microorganisms, converted into carbon dioxide and water, and produces biomass;

[0097] The effluent from the inner anoxic pool 12 is further treated in the rear anoxic partition 14 to optimize the anoxic conditions and improve the treatment effect;

[0098] It also includes backflow treatment: a part of the sewage returns to the inner anoxic pool 12 through "backflow 2" to mix with the newly entered sewage to increase the efficiency of the anoxic reaction; backflow 2 is 1 to 3 times the flow rate;

[0099] The wastewater then enters the membrane zone 15, where solid-liquid separation is performed using membrane technology to remove suspended solids and some dissolved solids, while also recovering some biomass as “excess sludge”;

[0100] Among them, it also includes return flow treatment: a part of the sewage returns to the outer aerobic zone 13 through "return flow 3" and mixes with the newly entered sewage to increase the efficiency of aerobic decomposition; the return flow 3 is 3 times the flow rate;

[0101] The remaining sludge enters the sludge dewatering system, where the water is removed by mechanical or chemical methods to form dried sludge for subsequent treatment or disposal;

[0102] In addition, in order to save energy and reduce costs, photovoltaic installation brackets prepared in advance can facilitate the rapid deployment of photovoltaic energy.

[0103] The working principle of the present invention is:

[0104] In the rapid assembly and deployment of the present invention, all components of the assembled pool body 10 are prefabricated workpieces in the factory. The first curved plate 112, the second curved plate 121 and the third curved plate 191 are all prefabricated parts with the same outer diameter structure and different thicknesses. According to the actual installation requirements, sufficient quantities and corresponding auxiliary installation parts can be prepared for on-site installation and construction;

[0105] Among them, all auxiliary components and quick connection interfaces adopt standardized design, which greatly shortens the installation and construction time of the processing equipment;

[0106] like Fig.14 As shown, after the assembly tank body 10 is completed, it is coordinated with the MBR membrane assembly 3; the fan and pump 4; the clean water tank 5; the dosing room 6, the sludge dewatering room 7, the hydraulic screen 8 and other necessary equipment to work together to purify the municipal sewage;

[0107] In the sewage treatment process, Fig.15 As shown;

[0108] First, sewage is received from the municipal pipe network; it is pumped out from a designated sewage well or sewage source by a pump; the sewage is initially filtered through a hydraulic screen to remove larger particles of suspended solids and impurities; and then it enters the central anaerobic tank 11 through a sewage input pipe 111;

[0109] The sewage that has passed through the hydraulic screen enters the central anaerobic tank 11, where part of the organic matter in the sewage begins to undergo anaerobically decomposition under anaerobic conditions;

[0110] Denitrification is carried out in the inner anoxic pool 12 to further remove nitrogen from the sewage;

[0111] It also includes backflow treatment: a part of the sewage returns to the central anaerobic tank 11 through "backflow 1" to mix with the newly entered sewage to increase the efficiency of the anaerobic reaction; the backflow 1 is 0.5 to 1 times the flow rate;

[0112] In the outer aerobic zone 13, organic matter in the sewage is aerobically decomposed by a large number of microorganisms, converted into carbon dioxide and water, and produces biomass;

[0113] The effluent from the inner anoxic pool 12 is further treated in the rear anoxic partition 14 to optimize the anoxic conditions and improve the treatment effect;

[0114] Among them, it also includes return flow treatment: a part of the sewage returns to the middle circle anoxic tank 12 through "return flow 2" to mix with the newly entered sewage to increase the efficiency of the anoxic reaction; the return flow 2 is 1 to 3 times the flow rate;

[0115] The wastewater then enters the membrane zone 15, where solid-liquid separation is performed using membrane technology to remove suspended solids and some dissolved solids, while also recovering some biomass as “excess sludge”;

[0116] Among them, it also includes return flow treatment: a part of the sewage returns to the outer aerobic zone 13 through "return flow 3" and mixes with the newly entered sewage to increase the efficiency of aerobic decomposition; the return flow 3 is 3 times the flow rate;

[0117] The remaining sludge enters the sludge dewatering system, where the water is removed by mechanical or chemical methods to form dried sludge for subsequent treatment or disposal;

[0118] Finally, the sewage after the above series of treatment steps becomes clean water, which is stored in the clean water tank and meets the discharge standards. It can be used for irrigation, landscape replenishment or other non-drinking water purposes.

[0119] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A new energy assembled municipal sewage treatment equipment, comprising an assembled tank body (10), Features The assembled tank body (10) comprises a central anaerobic tank (11), an inner anoxic tank (12) located outside the central anaerobic tank (11), an outer aerobic partition (13) located outside the inner anoxic tank (12), a rear anoxic partition (14) located outside the inner anoxic tank (12) and located on one side of the outer aerobic partition (13), a membrane zone (15) located outside the inner anoxic tank (12) and located on one side of the rear anoxic partition (14); and a base (16); The volume ratio of the central anaerobic tank (11), the inner anoxic tank (12), the outer aerobic partition (13), the post-anoxic partition (14), and the membrane zone (15) is 1:2:4:2:1 when total nitrogen removal is required; The volume ratio is 1:2:3:1:1 when there is no requirement for total nitrogen removal; The top of the assembled pool body (10) is also provided with a straight horizontal bridge (17), and a circular bridge (18) located outside the top of the inner anoxic pool (12).

2. A new energy assembled municipal sewage treatment equipment according to claim 1, It is characterized in that A sewage input pipe (111) is provided at the top of the central anaerobic tank (11) and on one side of the straight horizontal bridge (17); The central anaerobic tank (11) is a cylindrical annular body composed of a plurality of first arc-shaped plates (112) having the same outer diameter structure; the plurality of first arc-shaped plates (112) are arranged in four layers from top to bottom, and two adjacent first arc-shaped plates (112) are connected by bolts and nuts; The central anaerobic tank (11) is located at the center of the base (16); The side wall of the central anaerobic tank (11) is provided with at least one return pipe interface (a) and at least one sewage pipe interface (b).

3. A new energy assembled municipal sewage treatment equipment according to claim 1, It is characterized in that The inner anoxic pool (12) is a cylindrical annular body composed of a plurality of second arc-shaped plates (121) with the same outer diameter structure; The plurality of second curved plates (121) are sequentially arranged in four layers from top to bottom. Among the four layers of the second curved plates (121), the thickness of the second curved plates (121) of the first layer and the fourth layer is the same, and the thickness of the second curved plates (121) of the second layer and the third layer is the same; Two adjacent second arc-shaped plates (121) are connected via bolts and nuts; The outer wall of the inner anoxic pool (12) is provided with at least one return pipe interface (a) and at least one sewage pipe interface (b).

4. A new energy assembled municipal sewage treatment equipment according to claim 1, It is characterized in that The outer aerobic partition (13), the rear anoxic partition (14), and the membrane zone (15) together constitute the outer pool body circle (19); A partition partition one (c1) is provided between the outer aerobic partition (13) and the rear anoxic partition (14), a partition partition two (c2) is provided between the rear anoxic partition (14) and the membrane zone (15), and a partition partition three (c3) is provided between the membrane zone (15) and the outer aerobic partition (13).

5. A new energy assembled municipal sewage treatment equipment according to claim 4, It is characterized in that The outer ring (19) of the pool body is a cylindrical ring body composed of a plurality of third arc-shaped plates (191) with the same outer diameter structure; The plurality of third curved plates (191) are sequentially arranged in four layers from top to bottom. Among the four layers of the third curved plates (191), the thickness of the third curved plates (191) of the first layer and the fourth layer is the same, and the thickness of the third curved plates (191) of the second layer and the third layer is the same; Two adjacent third arc-shaped plates (191) are connected via bolts and nuts.

6. A new energy assembled municipal sewage treatment equipment according to claim 4, It is characterized in that At least one lightning protection component (192) is provided on the top of the outer wall of the outer ring (19) of the pool body.

7. A new energy assembled municipal sewage treatment equipment according to claim 4, It is characterized in that At least one sewage pipe interface (b) is provided on the side wall of the partition partition 1 (c1) and the side wall of the partition partition 2 (c2); The side wall of the partition wall three (c3) is provided with at least one return pipe interface (a) and at least one sewage pipe interface (b).

8. The new energy assembled municipal sewage treatment equipment according to claim 1, It is characterized in that The connection interfaces and connecting parts used in the assembled pool body (10) are all of standardized design.

9. The new energy assembled municipal sewage treatment equipment according to claim 1, It is characterized in that A photovoltaic mounting bracket is also provided on the top of the assembled pool body (10).

10. A new energy assembled municipal sewage treatment process, applied to a new energy assembled municipal sewage treatment equipment as described in claims 1-9, It is characterized in that The processing steps are as follows: S1. Municipal sewage reception: First, sewage from the municipal pipe network is received; S2. Hydraulic screen filtration: The sewage is initially filtered through a hydraulic screen to remove larger particles of suspended matter and impurities; S3, anaerobic tank treatment: the sewage after the hydraulic screen enters the central anaerobic tank (11), under anaerobic conditions, part of the organic matter in the sewage begins to undergo anaerobically decompose; S4, anoxic tank treatment: denitrification is carried out in the inner anoxic tank (12) to further remove nitrogen from the sewage; It also includes a backflow treatment: a portion of the sewage returns to the central anaerobic tank (11) through "backflow 1" to mix with the newly entered sewage to increase the efficiency of the anaerobic reaction; the backflow 1 is 0.5 to 1 times the flow rate; S5, aerobic pool treatment: In the outer aerobic zone (13), the organic matter in the sewage is aerobically decomposed by a large number of microorganisms, converted into carbon dioxide and water, and produces biomass; S6, post-anoxic pool treatment: further treating the effluent from the inner anoxic pool (12) in the post-anoxic partition (14) to optimize the anoxic conditions and improve the treatment effect; It also includes a backflow treatment: a portion of the sewage returns to the inner anoxic pool (12) through "backflow 2" to mix with the newly entered sewage to increase the efficiency of the anoxic reaction; the backflow 2 is 1 to 3 times the flow rate; S7, membrane pool treatment: The sewage then enters the membrane area (15), where solid-liquid separation is performed using membrane technology to remove suspended solids and some soluble solids, while recovering part of the biomass as "residual sludge"; It also includes a backflow treatment: a portion of the sewage returns to the outer aerobic partition (13) through "backflow 3" to mix with the newly entered sewage to increase the efficiency of aerobic decomposition; the backflow 3 is 3 times the flow rate; S8, sludge dehydration: the remaining sludge enters the sludge dehydration system, and the water in it is removed by mechanical or chemical methods to form dried sludge for subsequent treatment or disposal; S9, clean water tank: Finally, the sewage after the above series of treatment steps becomes clean water and is stored in the clean water tank. It meets the discharge standards and can be used for irrigation, landscape replenishment or as other non-drinking water purposes.

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