Two-stage microbial honeycomb tube bundle mass transfer sewage treatment equipment

Abstract

The utility model provides a two -segment formula microorganism honeycomb tube bundle mass transfer sewage treatment equipment, including the microorganial tube bundle incubator, primary biological reaction box, secondary biological reaction box, tertiary biological reaction box and fresh water tank that pass through the pipeline connection in sequence, the microorganial tube bundle incubator, primary biological reaction box constitutes a section reaction area, secondary biological reaction box, tertiary biological reaction box and fresh water tank constitute two -segment reaction area, the microorganial tube bundle incubator is used for carrying out microorganism growth and proliferation, primary biological reaction box, secondary biological reaction box and tertiary biological reaction box are all used for biological culture. The utility model need not traditional sludge reflux and processing steps, greatly simplifies the operation process, and reduced the operation complexity, this makes this technique easier in all kinds of sewage treatment facilities popularization and application, reduces manual operation cost and time cost.

Description

Technical Field

[0001] This utility model belongs to the field of wastewater treatment, and in particular relates to a two-stage microbial honeycomb tube bundle mass transfer wastewater treatment device. Background Technology

[0002] The activated sludge process requires inoculation with sludge during startup, typically imported from other well-functioning wastewater treatment facilities. After inoculation, the sludge needs a period of acclimatization to adapt to the new wastewater quality and treatment conditions. The aeration system consumes significant energy, increasing operating costs. Microorganisms in the activated sludge continuously grow and reproduce during the degradation of organic matter, generating new biomass. Once this biomass reaches a certain concentration, it is discharged from the system as sludge. The process produces a large amount of sludge, requiring additional sludge treatment facilities. Fluctuations in water quality can affect the settling properties of the sludge, i.e., the settling velocity of sludge particles in still water. High concentrations of suspended solids or colloidal substances can increase sludge viscosity, leading to difficulty in settling and even sludge bulking. Fluctuations in water quality can pose challenges to the stable operation of the activated sludge process. Utility Model Content

[0003] In view of this, the present invention aims to propose a two-stage microbial honeycomb tube bundle mass transfer wastewater treatment device to solve the above problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A two-stage microbial honeycomb tube bundle mass transfer wastewater treatment device includes a microbial tube bundle incubator, a primary bioreactor, a secondary bioreactor, a tertiary bioreactor, and a clear water tank connected sequentially by pipelines.

[0006] The microbial tube incubator and the primary bioreactor form one reaction zone; the secondary bioreactor, the tertiary bioreactor, and the clear water tank form two reaction zones.

[0007] Microbial tube bundle incubators are used for the growth and proliferation of microorganisms;

[0008] The primary, secondary, and tertiary bioreactors are all used for biological culture.

[0009] Furthermore, the microbial tube bundle incubator includes, from top to bottom, a nutrient preparation area, a microbial tube bundle production area, a spray area, a coil heating area, and a microcurrent release area;

[0010] The upper part of the microbial tube bundle incubator is equipped with a partition to form a nutrient preparation area. Wastewater enters the nutrient preparation area through pipelines. The nutrient preparation area is connected to a dosing device for adding nutrients into the area to achieve mixing with the wastewater.

[0011] The bottom of the partition is equipped with a turbulence generator, which is used to distribute the wastewater from the nutrient preparation area to the microbial tube bundle production area.

[0012] The microbial tube production area is provided with several uniformly arranged circular tubes, and the inner surface of the circular tubes is provided with a mesh fabric filler.

[0013] The circular tube is also equipped with a main water inlet pipe inside, and a spray head is provided on the main pipe. The main water inlet pipes of each circular tube are connected by branch pipes to form a spray area for cleaning the metabolic waste of the tube bundle body; the branch pipes are also connected to external water supply equipment.

[0014] The heating zone of the coil is provided with several coil bodies, which are installed to the inner wall of the microbial tube bundle incubator by supporting steel.

[0015] The bottom of the microbial tube bundle incubator is equipped with several microcurrent stimulators, forming a microcurrent release zone.

[0016] Furthermore, the primary bioreactor includes a pulse backwash zone, a plate packing assembly, and an aeration system;

[0017] The pulse backwash zone is equipped with a pulse backwash assembly connected to an external water source for cleaning the plate packing assembly;

[0018] The plate packing assembly includes an upper guide rail, a lower guide rail, and plate fabric packing; the upper and lower guide rails are fixedly installed to the inner wall of the primary bioreactor, and the upper and lower guide rails are respectively provided with connectors for fixing the plate fabric packing, so as to realize the detachable installation of the plate fabric packing.

[0019] The aeration system is installed at the bottom of the primary bioreactor to provide oxygen for the growth of microorganisms.

[0020] Furthermore, the structures of the secondary and tertiary bioreactors are the same as those of the primary bioreactor;

[0021] The dissolved oxygen (DO) in the primary bioreactor is controlled at 7-8 mg / L; the dissolved oxygen (DO) in the secondary bioreactor is controlled at 4-6 mg / L; and the dissolved oxygen (DO) in the tertiary bioreactor is controlled at 2-3 mg / L.

[0022] Compared with existing technologies, the two-stage microbial honeycomb tube bundle mass transfer wastewater treatment equipment of this utility model has the following advantages:

[0023] (1) The two-stage microbial honeycomb tube bundle mass transfer sewage treatment equipment described in this utility model does not require traditional sludge return and treatment steps, which greatly simplifies the operation process and reduces the complexity of operation; this makes the technology easier to promote and apply in various sewage treatment facilities, reducing manual operation costs and time costs.

[0024] Sludge-free bio-inoculant cultivation technology fundamentally avoids sludge generation, thereby reducing the burden of subsequent sludge treatment. This not only reduces the equipment and manpower required for sludge treatment but also lowers the environmental risks that sludge disposal may pose.

[0025] (2) The two-stage microbial honeycomb tube bundle mass transfer wastewater treatment equipment described in this utility model can achieve efficient degradation of specific pollutants and improve treatment efficiency. This makes the technology perform well in treating high-concentration, recalcitrant wastewater, providing a new solution for wastewater treatment.

[0026] (3) The two-stage microbial honeycomb tube mass transfer sewage treatment equipment described in this utility model has enhanced the stability and shock resistance of the system by controlling the type and quantity of biological agents through the biological agent cultivation technology without sludge; this makes the technology better able to adapt to water quality fluctuations and shock loads, and ensure that the effluent water quality meets the standards stably.

[0027] (4) The two-stage microbial honeycomb tube bundle mass transfer wastewater treatment equipment described in this utility model helps to reduce overall treatment costs by simplifying the operation process, reducing the sludge treatment burden, and improving treatment efficiency. This makes the technology more economically competitive and provides strong support for the sustainable development of the wastewater treatment industry.

[0028] (5) The two-stage microbial honeycomb tube mass transfer wastewater treatment equipment described in this utility model can monitor the growth status and performance parameters of the biological agent in real time; this helps to identify and solve problems in a timely manner, ensure the smooth progress of the biological treatment process, and improve the convenience and efficiency of management. Attached Figure Description

[0029] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0030] Figure 1 This is a schematic diagram of a two-stage microbial honeycomb tube bundle mass transfer wastewater treatment device according to an embodiment of the present invention;

[0031] Figure 2 This is a cross-sectional view of the microbial tube bundle incubator described in an embodiment of this utility model;

[0032] Figure 3 This is a cross-sectional view of the primary bioreactor described in an embodiment of the present invention;

[0033] Figure 4 This is a cross-sectional view of the secondary and tertiary bioreactors described in the embodiments of this utility model.

[0034] Explanation of reference numerals in the attached figures:

[0035] 1. Microbial tube bundle incubator; 11. Nutrient preparation area; 12. Microbial tube bundle production area; 121. Circular tube; 122. Mesh fabric packing; 13. Spraying area; 131. Main inlet pipe; 132. Spray head; 14. Coil heating area; 15. Microcurrent release area; 2. Primary bioreactor; 21. Pulse backwashing area; 22. Plate packing assembly; 221. Upper guide rail; 222. Lower guide rail; 223. Plate fabric packing; 23. Aeration system; 3. Secondary bioreactor; 4. Tertiary bioreactor; 5. Clear water tank. Detailed Implementation

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0037] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0038] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art will understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0039] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0040] A two-stage microbial honeycomb tube bundle mass transfer wastewater treatment device, such as Figures 1-4 As shown, it includes a microbial tube bundle incubator 1, a primary bioreactor 2, a secondary bioreactor 3, a tertiary bioreactor 4, and a clear water tank 5, which are connected in sequence by pipelines.

[0041] The microbial tube incubator 1 and the primary bioreactor 2 form one reaction zone; the secondary bioreactor 3, the tertiary bioreactor 4 and the clear water tank 5 form two reaction zones.

[0042] The microbial tube bundle incubator 1 is used for the growth and proliferation of microorganisms;

[0043] The primary bioreactor 2, secondary bioreactor 3, and tertiary bioreactor 4 are all used for biological culture.

[0044] Preferably, the microbial tube bundle incubator 1 includes, from top to bottom, a nutrient preparation area 11, a microbial tube bundle production area 12, a spray area 13, a coil heating area 14, and a microcurrent release area 15.

[0045] The upper part of the microbial tube bundle incubator 1 is equipped with a partition to form a nutrient preparation area 11. The pretreated sewage enters the nutrient preparation area 11 through a pipeline. The nutrient preparation area 11 is connected to a dispensing device for dispensing nutrients into the area to achieve mixing with the sewage.

[0046] The bottom of the partition is equipped with a turbulence generator, which is used to distribute the wastewater from the nutrient preparation area 11 into the microbial tube bundle production area 12.

[0047] The microbial tube production zone 12 is provided with several uniformly arranged circular tubes 121, the inner surface of which is covered with a mesh fabric packing 122. This packing structure helps improve liquid flow and distribution. In applications such as microbial culture or wastewater treatment, good liquid flow ensures that microorganisms receive sufficient nutrients and oxygen. The mesh fabric packing 122, through its corrugated design, can effectively guide liquid flow, reduce dead zones, and improve mass transfer efficiency. It not only increases the attachment area for microorganisms and improves liquid flow and distribution, but may also have a positive impact on the structure and diversity of the microbial community.

[0048] The interior of the circular pipe 121 is also provided with a main water inlet pipe 131, and the main pipe is provided with a nozzle 132. The main water inlet pipes 131 of each circular pipe 121 are connected by branch pipes to form a spray area 13, which is used to clean the metabolic waste of the pipe bundle body; the branch pipes are also connected to external water supply equipment.

[0049] The heating zone 14 is provided with several coil bodies, which are installed to the inner wall of the microbial tube bundle incubator 1 by supporting steel; providing a suitable temperature for the growth of microorganisms when the temperature is low in winter.

[0050] The bottom of the microbial tube bundle incubator 1 is equipped with several microcurrent stimulators, forming a microcurrent release zone 15. These microcurrent stimulators, by introducing a weak current into the wastewater treatment system, can influence the metabolic activities and growth rate of microorganisms. This influence may be based on electrochemical principles, where current acts as a medium for electron transfer, promoting or inhibiting the metabolic pathways of certain microorganisms. Therefore, microcurrent stimulators may have a selective effect on the microbial community in wastewater, promoting the growth of certain microorganisms adapted to current stimulation while inhibiting others that are not. Secondly, microcurrent stimulators may affect the survival and reproduction of microorganisms by altering their cell membrane potential or intracellular redox state. This effect may vary depending on the type of microorganism, thus allowing for the screening of microorganisms with specific potential.

[0051] Preferably, the primary bioreactor 2 includes a pulse backwash zone 21, a plate packing assembly 22, and an aeration system 23;

[0052] The pulse backwash zone 21 is equipped with a pulse backwash assembly connected to an external water source for cleaning the plate packing assembly 22. When an aging microbial film adheres to the surface of the packing, it can be periodically rinsed off to allow for normal metabolic growth.

[0053] The plate packing assembly 22 includes an upper guide rail 221, a lower guide rail 222, and a plate fabric packing 223. The upper guide rail 221 and the lower guide rail 222 are fixedly installed to the inner wall of the primary bioreactor 2. The upper guide rail 221 and the lower guide rail 222 are respectively provided with connectors for fixing the plate fabric packing 223, so as to realize the detachable installation of the plate fabric packing 223. This structure can realize single-piece installation and disassembly.

[0054] Plate-type fabric packing 223 is typically composed of multiple layers of stacked fiber fabrics, with numerous tiny channels and voids formed between these fabric layers. These channels and voids not only increase the overall surface area of ​​the packing but also provide abundant attachment sites for microorganisms. This allows plate-type fabric packing 223 to accommodate more microorganisms during biological treatment, thereby improving treatment efficiency. Furthermore, its ease of biofilm formation, stability, and adaptability also make plate-type fabric packing 223 an ideal packing material for biological treatment.

[0055] The aeration system 23 is installed at the bottom of the primary bioreactor 2 to provide oxygen for the growth of microorganisms.

[0056] Preferably, the structures of the secondary bioreactor 3 and the tertiary bioreactor 4 are the same as those of the primary bioreactor; the primary bioreactor 2 uses intermittent aeration to achieve an oxygen-deficient environment, while the secondary and tertiary bioreactors 4 use continuous aeration.

[0057] The dissolved oxygen (DO) in the primary bioreactor 2 is controlled at 7-8 mg / L; the dissolved oxygen (DO) in the secondary bioreactor is controlled at 4-6 mg / L; and the dissolved oxygen (DO) in the tertiary bioreactor is controlled at 2-3 mg / L.

[0058] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A two-stage microbial honeycomb bundle mass transfer sewage treatment apparatus, characterized in that: It includes a microbial tube incubator, a primary bioreactor, a secondary bioreactor, a tertiary bioreactor, and a clean water tank, which are connected in sequence by pipelines. The microbial tube incubator and the primary bioreactor form one reaction zone; the secondary bioreactor, the tertiary bioreactor, and the clear water tank form two reaction zones. Microbial tube bundle incubators are used for the growth and proliferation of microorganisms; The primary, secondary, and tertiary bioreactors are all used for biological culture.

2. A two-stage microbial honeycomb bundle mass transfer sewage treatment apparatus according to claim 1, characterized in that: The microbial tube bundle incubator includes, from top to bottom, a nutrient preparation area, a microbial tube bundle production area, a spray area, a coil heating area, and a microcurrent release area. The upper part of the microbial tube bundle incubator is equipped with a partition to form a nutrient preparation area. Wastewater enters the nutrient preparation area through pipelines. The nutrient preparation area is connected to a dosing device for adding nutrients into the area to achieve mixing with the wastewater. The bottom of the partition is equipped with a turbulence generator, which is used to distribute the wastewater from the nutrient preparation area to the microbial tube bundle production area. The microbial tube production area is provided with several uniformly arranged circular tubes, and the inner surface of the circular tubes is provided with a mesh fabric filler. The circular tube is also equipped with a main water inlet pipe inside, and a spray head is provided on the main pipe. The main water inlet pipes of each circular tube are connected by branch pipes to form a spray area for cleaning the metabolic waste of the tube bundle body; the branch pipes are also connected to external water supply equipment. The heating zone of the coil is provided with several coil bodies, which are installed to the inner wall of the microbial tube bundle incubator by supporting steel. The bottom of the microbial tube bundle incubator is equipped with several microcurrent stimulators, forming a microcurrent release zone.

3. A two-stage microbial cell honeycomb bundle mass transfer sewage treatment apparatus according to claim 1, characterized in that: The primary bioreactor includes a pulse backwashing zone, a plate packing assembly, and an aeration system. The pulse backwash zone is equipped with a pulse backwash assembly connected to an external water source for cleaning the plate packing assembly; The plate packing assembly includes an upper guide rail, a lower guide rail, and plate fabric packing; the upper and lower guide rails are fixedly installed to the inner wall of the primary bioreactor, and the upper and lower guide rails are respectively provided with connectors for fixing the plate fabric packing, so as to realize the detachable installation of the plate fabric packing. The aeration system is installed at the bottom of the primary bioreactor to provide oxygen for the growth of microorganisms.

4. A two-stage microbial cell honeycomb bundle mass transfer sewage treatment apparatus according to claim 3, characterized in that: The structures of the secondary and tertiary bioreactors are the same as those of the primary bioreactor. The dissolved oxygen (DO) in the primary bioreactor is controlled at 7-8 mg / L; the dissolved oxygen (DO) in the secondary bioreactor is controlled at 4-6 mg / L; and the dissolved oxygen (DO) in the tertiary bioreactor is controlled at 2-3 mg / L.

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