Integrated sewage treatment device taking microorganism embedding carrier as core

Abstract

The utility model discloses an integrated sewage treatment device taking a microorganism embedding carrier as a core. An anoxic zone, an aerobic zone I, an aerobic zone II and a settling zone are sequentially arranged in a tank body in a separated and communicated manner; the first embedding carrier cage assembly is arranged in the anoxic zone; the two groups of second embedding carrier cage assemblies are respectively arranged in the first aerobic zone and the second aerobic zone; the inclined plate filler is arranged in the settling zone, and a sludge hopper is arranged at the lower part in the settling zone; the aeration assembly is arranged in the anoxic zone, the first aerobic zone and the second aerobic zone; the sludge backflow assembly is arranged between the settling zone and the anoxic zone. The integrated sewage treatment device taking the microorganism embedding carrier as the core is sewage treatment equipment integrating anoxic treatment, aerobic treatment and precipitation, is simple in structure, convenient to install, small in occupied area and low in operation cost, and can effectively solve the problem of treating rural sewage.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, and in particular to an integrated wastewater treatment device with a microbial encapsulation carrier as its core. Background Technology

[0002] Existing biological wastewater treatment processes mainly include activated sludge and biofilm processes. These traditional processes have been used for many years and each has its own advantages and disadvantages. For example, the traditional activated sludge process is simple and has low operating costs, but it suffers from sludge bulking and sludge loss. The biofilm process has good treatment effects, but the packing material is prone to clogging and requires backwashing, resulting in relatively high operating costs. For some decentralized wastewater treatment equipment, due to size design limitations and unreasonable process parameter design, the nitrogen and phosphorus removal efficiency is unstable.

[0003] Therefore, an integrated wastewater treatment device is developed, which improves the wastewater treatment effect by optimizing the cultivation of some dominant bacterial groups, such as nitrifying bacteria and denitrifying bacteria, to increase the number of microorganisms in the device. Utility Model Content

[0004] In view of the above-mentioned defects or deficiencies in the prior art, it is desirable to provide an integrated wastewater treatment device with microbial encapsulation carrier as the core.

[0005] This utility model provides an integrated wastewater treatment device with a microbial encapsulation carrier as its core, comprising a tank, a first encapsulation carrier cage assembly, a second encapsulation carrier cage assembly, inclined plate packing, an aeration assembly, and a sludge return assembly; wherein...

[0006] The tank is internally divided into an anoxic zone, an aerobic zone one, an aerobic zone two, and a sedimentation zone by a partition component.

[0007] The first embedding carrier cage assembly is disposed inside the anoxic zone;

[0008] The second embedding carrier cage assembly is provided in two sets, and the two sets of the second embedding carrier cage assembly are respectively disposed inside the aerobic zone one and the aerobic zone two.

[0009] The inclined plate packing is disposed inside the sedimentation zone, and a sludge hopper for sludge storage is disposed below the inclined plate packing inside the sedimentation zone.

[0010] The aeration components are installed inside the anoxic zone, aerobic zone one, and aerobic zone two, so that the wastewater can have full contact with the microbial carrier.

[0011] The sludge return assembly is located between the sedimentation zone and the anoxic zone, and is used to return the sludge inside the sedimentation zone to the interior of the anoxic zone.

[0012] Furthermore, a sewage inlet pipe is provided on the upper part of the side wall of the tank corresponding to the anoxic zone; a clean water outlet pipe is provided on the upper part of the side wall of the tank corresponding to the sedimentation zone; and four inspection ports are provided on the top of the tank, which are respectively provided for the anoxic zone, aerobic zone one, aerobic zone two and sedimentation zone.

[0013] Furthermore, the partition assembly includes a partition plate arranged vertically inside the tank body, and the circumferential sides of the partition plate are fixedly connected to the inner side of the tank body; the upper part of the partition plate is provided with a strip-shaped opening for water flow, and the bottom of the strip-shaped opening is fixedly provided with a baffle plate that is inclined towards the clean water outlet pipe.

[0014] Furthermore, both the first and second embedding carrier cage assemblies are disposed inside the corresponding anoxic zone, aerobic zone one, and aerobic zone two via support assemblies; the support assemblies include support trays, and support legs are fixedly disposed on the bottom surface of the support trays.

[0015] Furthermore, both the first embedding carrier cage assembly and the second embedding carrier cage assembly include four cages arranged in a grid pattern, which are fixedly disposed on the top surface of the corresponding support tray. The cages are made of stainless steel plate and the stainless steel plate is evenly distributed with through holes of 0.5 cm in diameter.

[0016] Furthermore, the cage of the first embedding carrier cage assembly is filled with denitrifying bacteria embedding carrier, and the cage of the second embedding carrier cage assembly is filled with nitrifying bacteria embedding carrier; the filling rate of the denitrifying bacteria embedding carrier and the nitrifying bacteria embedding carrier in the corresponding cage is set to 60%.

[0017] Furthermore, the aeration assembly includes an air inlet main pipe disposed inside the tank and located at the top of the anoxic zone, aerobic zone one, and aerobic zone two. An L-shaped aeration pipe is fixedly disposed on the air inlet main pipe, corresponding to the anoxic zone, aerobic zone one, and aerobic zone two respectively. The bottom surface of the horizontal tube of the L-shaped aeration pipe is evenly provided with downward-facing air outlet holes. An air inlet is provided on the air inlet main pipe, which extends out of the top of the tank and is connected to the air supply equipment.

[0018] Furthermore, the sludge return assembly includes a sludge pump fixedly mounted on the top surface of the tank. A sludge return pipe is fixedly mounted at the inlet of the sludge pump. The end of the sludge return pipe away from the sludge pump passes through the inclined plate packing and is inserted into the interior of the sludge hopper. A sludge return pipe is fixedly mounted at the outlet of the sludge pump. The end of the sludge return pipe away from the sludge pump is inserted into the interior of the anoxic zone.

[0019] Furthermore, the main air inlet pipe, the L-shaped aeration pipe, and the sludge return pipe are all fixed to the tank body by pipe supports.

[0020] Furthermore, the tank body is made of fiberglass.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This utility model discloses an integrated wastewater treatment device with microbial embedding carriers as its core. The device is divided into sequentially connected anoxic, aerobic, and aerobic zones within a tank by partitions, forming a wastewater treatment unit that integrates reaction and sedimentation. It features a compact structure, small footprint, integrated equipment, short and convenient installation cycle, and low operating costs, effectively solving wastewater treatment problems. The device is divided into zones filled with embedding carriers of different bacterial species, resulting in a large biomass, functional zoning of microorganisms at each level, good treatment effect, and strong resistance to shock loads.

[0023] It should be understood that the content described in the utility model description section is not intended to limit the key or important features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model.

[0024] Other features of this invention will become readily apparent from the following description. Attached Figure Description

[0025] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0026] Figure 1 A front view cross-sectional structural schematic diagram of an integrated sewage treatment device with a microbial encapsulation carrier as its core, provided for an embodiment of this utility model;

[0027] Figure 2 A top-view structural diagram of an integrated wastewater treatment unit;

[0028] Figure 3 A top-view structural diagram of the installed grid-shaped cage;

[0029] Numbered in the diagram: 1. Tank; 2. Anoxic zone; 3. Aerobic zone one; 4. Aerobic zone two; 5. Sedimentation zone; 6. Separation assembly; 61. Baffle; 62. Strip opening; 63. Baffle; 7. Sewage inlet pipe; 8. Clean water outlet pipe; 9. Inspection port; 10. First encasing carrier cage assembly; 11. Second encasing carrier cage assembly; 12. Support assembly; 121. Support tray; 122. Support 13. Leg; 14. Cage; 15. Denitrifying bacteria embedding carrier; 16. Nitrifying bacteria embedding carrier; 17. Inclined plate packing; 18. Inclined plate packing support; 19. Sludge hopper; 10. Aeration assembly; 191. Main air inlet pipe; 192. L-shaped aeration pipe; 193. Air inlet; 20. Sludge return assembly; 201. Sludge pump; 202. Sludge return pipe; 203. Sludge return pipe; 21. Pipe support. Detailed Implementation

[0030] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the relevant invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, only the parts relevant to the invention are shown in the accompanying drawings.

[0031] It should be noted that, where there is no conflict, the embodiments and features in the embodiments of this utility model can be combined with each other. The present utility model will now be described in detail with reference to the accompanying drawings and embodiments.

[0032] Please refer to Figures 1-3 This utility model provides an integrated wastewater treatment device with a microbial encapsulation carrier as its core. It is a wastewater treatment equipment that integrates anoxic, aerobic, and sedimentation processes, suitable for rural wastewater treatment in my country. It includes a tank 1, a first encapsulation carrier cage assembly 10, a second encapsulation carrier cage assembly 11, inclined plate packing 16, an aeration assembly 19, and a sludge return assembly 20; wherein...

[0033] Tank 1 is divided into four zones in sequence by partition components 6: anoxic zone 2, aerobic zone 1 3, aerobic zone 2 4, and sedimentation zone 5. That is, there are three sets of partition components 6 inside tank 1, which are used to divide the inside of tank 1 into four areas in sequence: anoxic zone 2, aerobic zone 1 3, aerobic zone 2 4, and sedimentation zone 5.

[0034] In a preferred embodiment, the partition component 6 includes a partition 61 arranged vertically inside the tank 1, and the circumferential sides of the partition 61 are all fixedly connected to the inner side of the tank 1 in a sealed manner; the upper part of the partition 61 is provided with a strip-shaped opening 62 for water to flow through, and the bottom of the strip-shaped opening 62 is fixedly provided with a baffle 63 that is inclined towards the clean water outlet pipe 8.

[0035] In a preferred embodiment, a sewage inlet pipe 7 is provided on the upper part of the side wall of the tank 1 corresponding to the anoxic zone 2, for transporting sewage into the interior of the tank 1 for treatment; a clean water outlet pipe 8 is provided on the upper part of the side wall of the tank 1 corresponding to the sedimentation zone 5, for transporting the treated clean water out; and four inspection ports 9 are provided on the top of the tank 1, which correspond to the anoxic zone 2, aerobic zone 1 3, aerobic zone 2 4 and sedimentation zone 5 respectively.

[0036] The inspection port 9 is configured such that an opening is provided on the top of the tank body 1, and a cover is hinged to the top of the tank body 1 corresponding to the opening. During the sewage treatment process, the cover is in a closed state for the opening. When maintenance is required, the cover is rotated to open the opening for maintenance.

[0037] The first embedding carrier cage assembly 10 is disposed inside the anoxic zone 2;

[0038] The second embedding carrier cage assembly 11 is provided in two sets, and the two sets of the second embedding carrier cage assembly 11 are respectively disposed inside the aerobic zone 3 and the aerobic zone 4.

[0039] In a preferred embodiment, the first embedded carrier cage assembly 10 and the second embedded carrier cage assembly 11 are both disposed inside the corresponding anoxic zone 2, aerobic zone 1 3 and aerobic zone 2 4 by means of a support assembly 12; the support assembly 12 includes a support tray 121, and a support leg 122 is fixedly disposed on the bottom surface of the support tray 121 for supporting the first embedded carrier cage assembly 10 and the second embedded carrier cage assembly 11 off the ground to facilitate the passage of water.

[0040] In a preferred embodiment, both the first embedding carrier cage assembly 10 and the second embedding carrier cage assembly 11 include four cages 13 fixedly disposed on the top surface of the corresponding support tray 121 in a grid pattern. The cages 13 are made of stainless steel plate and have through holes with a diameter of 0.5 cm evenly distributed on the stainless steel plate. The purpose of this hole diameter is to facilitate water flow and effectively intercept the embedding carrier. In addition, the dimensions of a single cage are length × width × height = 0.6 × 0.6 × 1.5 m. This size is designed to facilitate pulling the cage 13 out from the corresponding inspection port 9 on the top of the tank body 1.

[0041] In a preferred embodiment, the cage of the first embedding carrier cage assembly 10 is filled with denitrifying bacteria embedding carrier 14, and the cage of the second embedding carrier cage assembly 11 is filled with nitrifying bacteria embedding carrier 15. The filling rate of the denitrifying bacteria embedding carrier 14 and the nitrifying bacteria embedding carrier 15 in the corresponding cage is set to 60% so that the embedding carrier packing has sufficient room to move and increases the contact area between the carrier packing and the sewage.

[0042] The denitrifying bacteria embedding carrier 14 and the nitrifying bacteria embedding carrier 15 are both 1cm cubes.

[0043] In the traditional activated sludge process, suitable microorganisms can be cultivated through seed sludge inoculation. However, the growth status of microorganisms is greatly affected by the quality of the incoming water and temperature. If the biochemical culture is not good, it is difficult to cultivate a large number of microorganisms, resulting in poor biochemical effects. In contrast, by using an encapsulation carrier, the microorganisms are solidified in the carrier and will not be lost. Furthermore, the number of microorganisms is large, resulting in good biochemical effects.

[0044] Inclined plate packing 16 is fixedly installed inside the sedimentation zone 5 by inclined plate packing support 17. Inside the sedimentation zone 5, below the inclined plate packing 16, there is a sludge hopper 18 for collecting and storing sludge, so that the sludge return assembly 20 can discharge or return the sludge to the anoxic zone 2.

[0045] Aeration components 19 are installed inside the anoxic zone 2, aerobic zone 1 3 and aerobic zone 2 4, so that the sewage can come into full contact with the microbial carrier and provide oxygen for the growth of microorganisms.

[0046] In a preferred embodiment, the aeration assembly 19 includes an air inlet main pipe 191 disposed inside the tank 1 and located at the top of the anoxic zone 2, aerobic zone 3, and aerobic zone 4. The air inlet main pipe 191 is fixedly provided with L-shaped aeration pipes 191 respectively connected to the anoxic zone 2, aerobic zone 3, and aerobic zone 4. The bottom surface of the horizontal tube of the L-shaped aeration pipe 191 is evenly provided with downward air outlet holes, wherein the number of air outlet holes in the anoxic zone 2 is less than that in the aerobic zone 4 and aerobic zone 5. An air inlet 193 is provided on the air inlet main pipe 191, and the air inlet 193 extends out of the top of the tank 1 and is connected to the air supply equipment.

[0047] The main air inlet pipe 191 is installed through the top of the corresponding partition, and the L-shaped aeration pipe 192 extends into the bottom of the tank 1 for aeration of the water in the tank 1.

[0048] The dissolved oxygen content in hypoxic zone 2 is controlled at 0.2 mg / L to 0.5 mg / L, while the dissolved oxygen content in aerobic zone 3 and aerobic zone 4 is controlled at above 2 mg / L.

[0049] Under aeration and agitation, the denitrifying bacteria carrier 14 and the nitrifying bacteria carrier 15 come into full contact with the wastewater. Pollutants and oxygen in the wastewater diffuse through the micropores on the surface of the denitrifying bacteria carrier 14 and the nitrifying bacteria carrier 15 and penetrate into their interior. Under the action of specific microorganisms inside, the pollutants are transformed and removed. For example, nitrifying bacteria oxidize NH3 to NO under aerobic conditions. 2- And further oxidized to NO 3-Under anaerobic conditions, denitrifying bacteria reduce nitrates and nitrites (produced during nitrification) into nitrogen gas. The reaction products diffuse back into the wastewater through the micropores of the embedded carrier, achieving efficient removal of pollutants. In this process, the microorganisms inside the embedded carrier continuously divide and multiply in the internal network space, rapidly increasing their biomass and distributing it throughout the network space inside the embedded carrier, thereby achieving the purpose of retaining microbial strains.

[0050] In addition, the air outlet of the L-shaped aeration pipe 192 is installed downwards. After the airflow impacts the bottom of the tank 1, it forms an upward baffle, which agitates the embedded carrier to form a fluidized state, making it less likely to accumulate at the bottom.

[0051] In addition, the aerators of the aeration system can be of the lifting type, which is convenient for installation and maintenance; the power equipment of the aeration system consists of only one blower, making equipment maintenance convenient.

[0052] The sludge return assembly 20 is located between the sedimentation zone 5 and the anoxic zone 2, and is used to return the sludge inside the sedimentation zone 5 to the interior of the anoxic zone 2.

[0053] In a preferred embodiment, the sludge return assembly 20 includes a sludge pump 201 fixedly disposed on the top surface of the tank 1. A sludge return pipe 202 is fixedly disposed at the inlet of the sludge pump 201. The end of the sludge return pipe 202 away from the sludge pump 201 passes through the inclined plate packing 16 and is inserted into the interior of the sludge hopper 18. A sludge return pipe 203 is fixedly disposed at the outlet of the sludge pump 201. The end of the sludge return pipe 203 away from the sludge pump 201 is inserted into the interior of the anoxic zone 2.

[0054] The sludge in the sludge hopper 18 is discharged back to the anoxic zone 2 through the sludge return pipe 202 and the sludge return pipe 203 by the sludge pump 201.

[0055] In a preferred embodiment, the main air inlet pipe 191, the L-shaped aeration pipe 192, and the sludge return pipe 203 are all fixed to the tank body 1 by pipe supports 21 to ensure the stability of the overall structure.

[0056] In a preferred embodiment, the tank body 1 is made of fiberglass, a corrosion-resistant tank structure that can be placed on the ground or buried underground, and has a long service life.

[0057] The working principle of this utility model:

[0058] Wastewater enters the anoxic zone 2 inside tank 1 through wastewater inlet pipe 7. After reacting with the denitrifying bacteria carrier 14, the water flows sequentially into aerobic zone 3 and aerobic zone 4, reacting with the nitrifying bacteria carrier 15 inside aerobic zone 3 and aerobic zone 4. Then, the water flows into sedimentation zone 5, where sludge and clean water are separated by inclined plate packing 16. The sludge enters the sludge hopper 18 below for accumulation, and the clean water flows out through the clean water outlet pipe 8. Throughout the above process, the aeration component 19 is constantly working to increase the contact between wastewater and the denitrifying bacteria carrier 14 and the nitrifying bacteria carrier 15.

[0059] Then, the sludge collected in the sludge hopper 18 is discharged into the anoxic zone 2 through the sludge return pipe 202 and the sludge return pipe 203 by the sludge pump 201.

[0060] In the description of this specification, the terms "connection," "installation," and "fixing," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0061] In the description of this specification, the terms "one embodiment," "some embodiments," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0062] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An integrated wastewater treatment device with microbial encapsulation carrier as its core, characterized in that, It includes a tank body, a first embedded carrier cage assembly, a second embedded carrier cage assembly, inclined plate packing, an aeration assembly, and a sludge return assembly; among which, The tank is internally divided into an anoxic zone, an aerobic zone one, an aerobic zone two, and a sedimentation zone by a partition component. The first embedding carrier cage assembly is disposed inside the anoxic zone; The second embedding carrier cage assembly is provided in two sets, and the two sets of the second embedding carrier cage assembly are respectively disposed inside the aerobic zone one and the aerobic zone two. The inclined plate packing is disposed inside the sedimentation zone, and a sludge hopper for sludge storage is disposed below the inclined plate packing inside the sedimentation zone. The aeration components are installed inside the anoxic zone, aerobic zone one, and aerobic zone two, so that the wastewater can have full contact with the microbial carrier. The sludge return assembly is located between the sedimentation zone and the anoxic zone, and is used to return the sludge inside the sedimentation zone to the interior of the anoxic zone.

2. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 1, characterized in that, A sewage inlet pipe is provided on the upper part of the side wall corresponding to the anoxic zone of the tank; a clean water outlet pipe is provided on the upper part of the side wall corresponding to the sedimentation zone of the tank; four inspection ports are provided on the top of the tank, and the four inspection ports are respectively provided for the anoxic zone, aerobic zone one, aerobic zone two and sedimentation zone.

3. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 2, characterized in that, The partition assembly includes a partition plate arranged vertically inside the tank body, and the circumferential sides of the partition plate are fixedly connected to the inner side of the tank body; the upper part of the partition plate is provided with a strip-shaped opening for water flow, and the bottom of the strip-shaped opening is fixedly provided with a baffle plate that is inclined towards the clean water outlet pipe.

4. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 1, characterized in that, Both the first embedding carrier cage assembly and the second embedding carrier cage assembly are disposed inside the corresponding anoxic zone, aerobic zone one, and aerobic zone two via support components; the support components include a support tray, and support legs are fixedly disposed on the bottom surface of the support tray.

5. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 4, characterized in that, Both the first embedding carrier cage assembly and the second embedding carrier cage assembly include four cages arranged in a grid pattern, which are fixedly disposed on the top surface of the corresponding support tray. The cages are made of stainless steel plate and the stainless steel plate is evenly distributed with through holes of 0.5 cm in diameter.

6. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 5, characterized in that, The cage of the first embedding carrier cage assembly is filled with denitrifying bacteria embedding carrier, and the cage of the second embedding carrier cage assembly is filled with nitrifying bacteria embedding carrier; the filling rate of the denitrifying bacteria embedding carrier and the nitrifying bacteria embedding carrier in the corresponding cage is set to 60%.

7. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 1, characterized in that, The aeration assembly includes a main air inlet pipe disposed inside the tank and located at the top of the anoxic zone, aerobic zone one, and aerobic zone two. An L-shaped aeration pipe is fixedly disposed on the main air inlet pipe, corresponding to the anoxic zone, aerobic zone one, and aerobic zone two respectively. The bottom surface of the horizontal tube of the L-shaped aeration pipe is evenly provided with downward-facing air outlet holes. An air inlet is provided on the main air inlet pipe, which extends out of the top of the tank and is connected to the air supply equipment.

8. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 7, characterized in that, The sludge return assembly includes a sludge pump fixedly mounted on the top surface of the tank. A sludge return pipe is fixedly mounted at the inlet of the sludge pump. The end of the sludge return pipe away from the sludge pump passes through the inclined plate packing and is inserted into the interior of the sludge hopper. A sludge return pipe is fixedly mounted at the outlet of the sludge pump. The end of the sludge return pipe away from the sludge pump is inserted into the interior of the anoxic zone.

9. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 8, characterized in that, The main air inlet pipe, L-shaped aeration pipe, and sludge return pipe are all fixed to the tank body by pipe supports.

10. The integrated wastewater treatment device with microbial encapsulation carrier as its core according to claim 1, characterized in that, The tank is made of fiberglass.

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