Module type combined suspended filler moving bed bio-membrane reactor

Abstract

The utility model discloses a modular combined suspended filler moving bed bio-membrane reactor which comprises an aeration tank provided with a water inlet pipe, a water outlet pipe and a blow-down pipe, and a plurality of suspended filler units are mounted in the aeration tank in a suspended manner; the suspended filler unit comprises a bamboo basket and a plurality of bamboo balls mounted in the bamboo basket, the bamboo basket is formed by weaving bamboos, an opening is formed in the bamboo basket, and a plurality of meshes are formed in the other surfaces of the bamboo basket; the bamboo balls are hollowed-out and formed by weaving bamboos, and the outer diameter of each bamboo ball is larger than the hole diameter of each mesh of the bamboo basket; aeration equipment positioned below the suspended filler unit is laid at the inner bottom of the aeration tank; and the aeration equipment comprises an aeration disc and an air pipe. Based on the characteristics that moso bamboos are easy to form films, rich in source, low in cost and easy to obtain, the moso bamboos are used as raw materials for manufacturing the combined suspended filler, the cost is low, the film forming effect is good, and operation management is convenient.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a modular combined suspended packing moving bed biofilm reactor. Background Technology

[0002] Moving bed biofilm reactors (MBBRs) are a novel and highly efficient wastewater treatment technology that combines the advantages of activated sludge and biofilm processes. Their working principle involves adding lightweight packing material to activated sludge. Through aeration and stirring, the packing material remains suspended and moving, ensuring uniform mixing with the wastewater and thorough contact with pollutants. Microorganisms attach to the surface of the packing material, forming a biofilm. Because the packing material moves freely with the water and air flow within the reactor, forming a "moving biofilm," bacteria and other microorganisms within the biofilm can efficiently utilize the organic matter in the wastewater for metabolism, achieving the goal of removing pollutants. The packing material is the core component of the MBBR reactor, serving as the carrier for microbial growth. The performance of the packing material significantly impacts biofilm attachment and reproduction, determining the diversity and biomass of the microbial community within the biofilm. High-performance packing material should possess the following characteristics: good biocompatibility, good hydrophilicity, high porosity, large surface roughness, large specific surface area, and low cost and availability. Currently used MBBR fillers are mainly made of polymer materials such as high-density polyethylene (HDPE), polyethylene (PE), and polypropylene (PP). They are lightweight and easy to suspend, but they have the following main problems:

[0003] 1. Poor hydrophilicity and biocompatibility of the packing material lead to problems such as slow biofilm formation, low biofilm quantity, and unsatisfactory wastewater treatment effect during MBBR startup and operation. Modifying the surface of these packing materials through physical and chemical methods can improve hydrophilicity and biocompatibility to some extent, but this significantly increases the cost.

[0004] 2. When the packing material is directly added to the reactor, the movement of the packing material within the reactor is uneven under the agitation of aeration, making it easy for it to aggregate and clump together. The uneven distribution of the packing material throughout the reactor can easily create dead zones within the reactor, reducing the reactor's volume utilization and biodegradation efficiency.

[0005] 3. The packing material is freely dispersed in the sewage. Only a screen is set at the outlet of the aeration tank to prevent the packing material from flowing out of the reactor with the water. When the packing material needs to be replaced, it is extremely inconvenient to retrieve and collect it, which makes the replacement of the packing material time-consuming and labor-intensive. Utility Model Content

[0006] Therefore, in order to address the aforementioned shortcomings of current MBBR reactors, this invention provides a modular combined suspended packing moving bed biofilm reactor. Based on the characteristics of bamboo being easy to attach to biofilms, abundant in source, and inexpensive, this invention uses bamboo as the raw material for making combined suspended packings, resulting in low cost, good biofilm attachment effect, and convenient operation and management.

[0007] Specifically, a modular combined suspended packing moving bed biofilm reactor includes an aeration tank with an inlet pipe, an outlet pipe and an vent pipe, wherein several suspended packing units are installed in the aeration tank by means of suspension.

[0008] The suspended filler unit includes a bamboo basket and several bamboo balls installed inside the bamboo basket. The bamboo basket is woven from bamboo and has an opening at the top and several mesh holes on each of the other sides. The bamboo balls are woven from bamboo and have a hollow shape. The outer diameter of the bamboo balls is larger than the diameter of the mesh holes in the bamboo basket.

[0009] An aeration device is laid at the bottom of the aeration tank, located below the suspended packing unit. The aeration device includes an aeration disc and an air pipe.

[0010] Optionally, the suspended packing unit is suspended from a boom by a traction rope, which is installed in the aeration tank; one end of the traction rope is slidably mounted to the boom via a lifting ring. The boom is used to fix the bamboo basket and to remove and install the bamboo basket when changing the packing material.

[0011] Optionally, the aeration tank is provided with a mounting part that matches the hanger rod. The mounting part is a slot formed in the aeration tank or a connecting block with a slot that is fixedly connected to the aeration tank.

[0012] Optionally, the aeration tank is equipped with two or more booms, each boom suspending one or more suspended packing units.

[0013] In the fabrication of the modular combined suspended packing moving bed biofilm reactor, bamboo baskets and bamboo balls are formed from bamboo strips. Several bamboo balls are placed in the bamboo baskets to form a suspended packing unit, with a packing filling rate of 30-40%. A certain number of suspended packing units are suspended in an aeration tank equipped with aeration equipment by hanging rods to form a water treatment unit. One or more water treatment units form a water treatment module. When the number of water treatment units is greater than two, the water treatment units operate in parallel.

[0014] When the modular combined suspended packing moving bed biofilm reactor is used, the packing is first pretreated and then inoculated with biofilm.

[0015] The pretreatment of the packing material is as follows: tap water is added to the aeration tank to the outlet pipe, the bamboo basket and bamboo ball are soaked for a set time, the water in the tank is drained, domestic sewage is added to the outlet pipe, the bamboo basket and bamboo ball are soaked for a set time, half of the sewage in the tank is discharged, and then activated sludge of a set concentration is added for inoculation. The amount of activated sludge added is half of the effective volume of the aeration tank.

[0016] The inoculation and biofilm formation process is as follows: after the inoculated activated sludge is added to the aeration tank, aeration is turned on and aeration is carried out for a set time. Then, the sludge is allowed to settle for a set time, and finally the supernatant is discharged. Domestic sewage is then added to the outlet pipe.

[0017] The aeration-sedimentation-discharge process is restarted. After four cycles, continuous biofilm formation begins. Domestic sewage continuously enters the aeration tank, and the microorganisms in the sewage continuously use the organic matter, ammonia nitrogen, and phosphorus in the sewage to synthesize and proliferate. The proliferating microorganisms continuously attach to and accumulate on the bamboo balls and bamboo baskets, thus forming a biofilm. When the ammonia nitrogen removal rate in the sewage reaches the specified value, the biofilm formation is successful.

[0018] After successful biofilm formation, wastewater treatment begins. During inoculation, biofilm formation, and continuous wastewater treatment, the aeration rate is maintained at 2-3 mg / L for dissolved oxygen. Simultaneously, the bamboo balls are allowed to move up and down and remain suspended in the pool, with the aeration rate controlled at 2.5-3.5 L / min.

[0019] Compared with traditional suspended packing moving bed biofilm reactors, this invention has the following advantages:

[0020] 1. Low cost;

[0021] Suspended bamboo balls, bamboo baskets, and supporting rods can all be sourced locally, resulting in low raw material costs and simple processing, which can significantly reduce the construction cost of the reactor. Compared with hollow plastic spherical packing of the same size, bamboo balls with a diameter of 5-6 cm are lighter, weighing only 1 / 3 to 1 / 2 of the former, and are more easily agitated by air bubbles and water flow to form a suspension, which can reduce aeration and agitation energy consumption and lower operating costs.

[0022] 2. Good biofilm formation and improved biodegradation effect;

[0023] The excellent hydrophilicity and biocompatibility of moso bamboo promote the attachment and growth of microorganisms and the biofilm effect, increasing the biofilm amount and thus improving the biodegradation effect.

[0024] 3. Modular combined packing material, easy to install and replace, and flexible in operation;

[0025] Each bamboo basket (including the bamboo balls inside) is an independent modular packing module. These modules can be pre-assembled and transported to the site. During installation, the entire module is assembled. For replacement, the entire basket is removed, preventing the bamboo balls from being lost. Furthermore, each module also functions as an independent mobile biofilm reactor. Several baskets together form several reactors. In practical applications, the number of modules can be increased or decreased, or the basket size can be changed, to flexibly adapt to fluctuations in water volume and water quality requirements, adjusting the treatment scale and ensuring stable operation while reducing energy consumption.

[0026] 4. No blind spots in response;

[0027] The bamboo balls are placed in a bamboo basket, and the basket is combined with the bamboo balls to form a whole and placed in the aeration tank. The movement range of the bamboo balls is limited to the bamboo basket, which effectively avoids the problem of a large amount of packing material accumulating locally, which is caused by the scattered packing material in the entire aeration tank, and thus avoids the dead zone of reaction.

[0028] 5. Green and environmentally friendly;

[0029] The plastic filler used in current MBBR is discarded after replacement, is difficult to biodegrade, and has an adverse impact on the environment. In contrast, the bamboo filler of this invention is made from locally sourced materials, the processing and production process does not affect the environment, and it can be used as an organic solid waste resource after disposal.

[0030] This invention is particularly suitable for areas rich in bamboo resources, providing local areas with a wastewater treatment device that requires little investment, is simple to construct, easy to manage, and is economical and effective. It also proposes a new technical approach for the application of moso bamboo in the field of wastewater treatment. Attached Figure Description

[0031] Figure 1 This is a plan view of the modular combined suspended packing moving bed biofilm reactor described in this utility model;

[0032] Figure 2 This is a longitudinal cross-sectional schematic diagram of the modular combined suspended packing moving bed biofilm reactor described in this utility model;

[0033] Figure 3 This is a schematic cross-sectional view of the modular combined suspended packing moving bed biofilm reactor described in this utility model;

[0034] In the diagram: 1. Inlet pipe; 2. Aeration tank; 3. Bamboo basket; 4. Bamboo ball; 5. Card slot; 6. Hanging rod; 7. Metal hanging ring; 8. Traction rope; 9. Metal hook; 10. Outlet pipe; 11. Aeration equipment; 12. Drain pipe. Detailed Implementation

[0035] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application.

[0036] In this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, without necessarily requiring or implying any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus.

[0037] As described in the background section, the currently used MBBR packing has the following main problems:

[0038] 1. Poor hydrophilicity and biocompatibility of the packing material lead to problems such as slow biofilm formation, low biofilm quantity, and unsatisfactory wastewater treatment effect during MBBR startup and operation. Modifying the surface of these packing materials through physical and chemical methods can improve hydrophilicity and biocompatibility to some extent, but this significantly increases the cost.

[0039] 2. When the packing material is directly added to the reactor, the movement of the packing material within the reactor is uneven under the agitation of aeration, making it easy for it to aggregate and clump together. The uneven distribution of the packing material throughout the reactor can easily create dead zones within the reactor, reducing the reactor's volume utilization and biodegradation efficiency.

[0040] 3. The packing material is freely dispersed in the sewage. Only a screen is set at the outlet of the aeration tank to prevent the packing material from flowing out of the reactor with the water. When the packing material needs to be replaced, it is extremely inconvenient to retrieve and collect it, which makes the replacement of the packing material time-consuming and labor-intensive.

[0041] For the reasons mentioned above, this embodiment provides a modular combined suspended packing moving bed biofilm reactor, such as... Figures 1-3 As shown, the reactor includes an aeration tank with an inlet pipe, an outlet pipe and an vent pipe, and several suspended packing units are installed in the aeration tank by means of suspension.

[0042] The suspended filler unit includes a bamboo basket and several bamboo balls installed inside the bamboo basket. The bamboo basket is woven from bamboo and has an opening at the top and several mesh holes on each of the other sides. The bamboo balls are woven from bamboo and have a hollow shape. The outer diameter of the bamboo balls is larger than the diameter of the mesh holes in the bamboo basket.

[0043] An aeration pipe is laid at the bottom of the aeration tank, located below the suspended packing unit.

[0044] For example, the bamboo basket is woven from bamboo strips 1.5-2 cm wide and 2-3 mm thick, with a square cross-section. The basket is not sealed, and its five sides have irregular geometric mesh openings. The cross-sectional dimensions and height of the bamboo basket should not be too large to avoid excessive weight; it should be easily assembled and disassembled by one person. This invention specifies a basket height of 1 m, an upper side length of 0.7 m, and a bottom side length of 0.6 m, allowing for stacking and convenient storage while reducing floor space. The mesh openings must be smaller than the diameter of the bamboo ball (less than 4 cm) to prevent the ball from falling out, but larger than 2 cm to allow wastewater, activated sludge, and aeration bubbles in the aeration tank to pass freely through the mesh, ensuring uniform mixing of substances in the tank and reducing the weight of the basket.

[0045] The bamboo balls are hollow bamboo balls with a diameter of 5-6 cm, woven from bamboo strips 6-7 mm wide and 1-2 mm thick. The surface of the balls has irregular geometric mesh holes, and the mesh holes are not less than 4 mm. The purpose is to allow water, activated sludge, and aeration bubbles in the packing basket to pass freely through the mesh holes of the bamboo balls, so that the substances in the bamboo basket are mixed evenly. At the same time, it can reduce the weight of each bamboo ball and ensure that the bamboo balls can move freely and suspend in the water under the agitation of the bubbles. Meanwhile, the mesh holes of the bamboo balls cannot be larger than 6 mm to avoid reducing the surface area of ​​the bamboo balls and reducing the amount of biofilm.

[0046] Among the aforementioned technical features, the suspended bamboo balls, baskets, and hanging rods can all be sourced locally, resulting in low raw material costs and simple processing, significantly reducing reactor construction costs. Compared to hollow plastic spherical packing of the same size, bamboo balls with a diameter of 5-6 cm are lighter, weighing only 1 / 3 to 1 / 2 of the former, making them easier to suspend by air bubbles and water flow, reducing aeration and agitation energy consumption and lowering operating costs. Simultaneously, the excellent hydrophilicity and biocompatibility of bamboo promote microbial attachment, growth, and biofilm formation. The bamboo baskets and balls increase the biofilm accumulation, thereby improving biodegradation efficiency. Furthermore, this reactor uses modular, combined packing materials, facilitating installation, replacement, and flexible operation.

[0047] Among the above technical features, the aeration equipment (aeration disc and air pipe) serves two purposes: first, to provide oxygen to the microorganisms in the biofilm to aerobically degrade pollutants in the wastewater; and second, to enable the bamboo balls to move and suspend in the bamboo basket by agitating the aeration bubbles and generating upward buoyancy.

[0048] The bamboo basket is used to hold bamboo balls. In addition, the bamboo strips used to weave the basket can also serve as a carrier for microorganisms to grow and inhabit, forming a biofilm on both sides of the bamboo strips for the biodegradation of pollutants in the water.

[0049] The bamboo balls serve two purposes: first, they act as a carrier for microbial growth and habitation, allowing microorganisms to attach and grow on both sides of the bamboo strips, thus forming a biofilm; second, through aeration and water flow, the bamboo balls create a mobile and suspended biofilm that can fully contact pollutants in the wastewater, thereby achieving efficient oxidation and decomposition of pollutants. In this way, the bamboo basket and the bamboo balls within it form a combined packing material for microbial growth and pollutant degradation.

[0050] To facilitate the removal and installation of the bamboo basket when changing the packing material, in one embodiment, the suspended packing unit is suspended from a boom by a traction rope, which is installed in the aeration tank. One end of the traction rope is slidably installed on the boom via a hanging ring. The aeration tank has a mounting part that matches the boom; this mounting part is either a slot in the aeration tank or a connecting block with a slot fixedly connected to the aeration tank. The bamboo basket is suspended from the boom by the traction rope, and the traction rope is connected to the boom via a hanging ring. This allows the movement of the hanging ring on the boom to change the suspension position of the bamboo basket, facilitating the adjustment of the position of the basket containing bamboo balls. The slot allows for the detachable installation of the boom, facilitating maintenance and on-site assembly.

[0051] To improve treatment efficiency, in one embodiment, the aeration tank is equipped with two or more suspension rods, each of which suspends one or more suspended packing units. Figure 1 As shown, three booms are installed in the aeration tank, and each boom is equipped with two suspended packing units. This technical feature can improve the wastewater treatment efficiency.

[0052] The modular combined suspended packing moving bed biofilm reactor needs to be manufactured first. During the manufacturing process, bamboo baskets and bamboo balls are formed by using bamboo strips. Several bamboo balls are placed in the bamboo baskets to form a suspended packing unit.

[0053] For example, each suspended packing unit consists of a bamboo basket and several bamboo balls placed inside the basket. The bamboo basket is woven from bamboo strips 1.5-2 cm wide and 2-3 mm thick, with a square cross-section. The basket is not sealed, and its five sides have irregular geometric mesh openings. The cross-sectional dimensions and height of the bamboo basket should not be too large to avoid excessive weight; it should be large enough for one person to install and disassemble. The basket is 1 m high, with a top side length of 0.7 m and a bottom side length of 0.6 m, allowing for stacking for convenient storage and reducing floor space. The mesh openings of the bamboo basket must be smaller than the diameter of the bamboo balls (less than 4 cm) to prevent the bamboo balls from falling out of the holes, while also being larger than 2 cm to allow wastewater, activated sludge, and aeration bubbles in the aeration tank to pass freely through the mesh, ensuring uniform mixing of substances in the tank and reducing the weight of the bamboo basket.

[0054] The bamboo balls are hollow bamboo balls with a diameter of 5-6 cm, woven from bamboo strips 6-7 mm wide and 1-2 mm thick. The surface of the balls has irregular geometric mesh holes, and the mesh holes are not less than 4 mm. The purpose is to allow water, activated sludge, and aeration bubbles in the packing basket to pass freely through the mesh holes of the bamboo balls, so that the substances in the bamboo basket are mixed evenly. At the same time, it can reduce the weight of each bamboo ball and ensure that the bamboo balls can move freely and suspend in the water under the agitation of the bubbles. Meanwhile, the mesh holes of the bamboo balls cannot be larger than 6 mm to avoid reducing the surface area of ​​the bamboo balls and reducing the amount of biofilm.

[0055] The fill rate is a crucial indicator of MBBR (Bamboo Bioreactor), determining the specific surface area and biofilm formation of the suspended packing material, directly impacting treatment performance. A fill rate that is too low reduces biofilm formation and treatment efficiency, while a fill rate that is too high increases airflow and water flow resistance, increasing both packing material cost and energy consumption, and reducing mass transfer efficiency, thus affecting biodegradation. In this embodiment, based on the operating characteristics of the bamboo balls, the fill rate of the packing material in each bamboo basket was determined to be between 30% and 40%.

[0056] After the bamboo baskets and bamboo balls are made, a certain number of suspended packing units are suspended in the aeration tank equipped with aeration pipes by hanging rods to form a water treatment unit. One or more water treatment units form a water treatment module. When the number of water treatment units is greater than two, the water treatment units operate in parallel.

[0057] For example, each bamboo basket in the suspended packing unit is mounted on a lifting rod via a metal ring, two traction ropes, and four metal hooks. The bamboo baskets are placed in suitable positions using the traction ropes, or they can be pulled one by one to the tank wall near the reactor for easy disassembly. Two slots are installed on each of the two longitudinal tank walls of the reactor, and the two ends of the lifting rod are placed in the two slots respectively. The lifting rod is made of a single bamboo pole with a diameter of approximately 8-10 cm. The lifting rod is not fixed, facilitating removal and replacement from the slots, as well as placement of the bamboo baskets. An aeration tank of a certain length is designed according to the treatment volume and requirements, with several pairs of slots arranged along the tank length to hold several lifting rods. To ensure safe use and convenient installation of each lifting rod, the length of each rod is no more than 2 m, and two bamboo baskets can be placed on one rod. In practical applications, depending on the treatment volume and requirements, two or more water treatment units can be designed to operate in parallel, with each aeration tank having a net width of 2 m. The distance between the bottom of the bamboo basket and the top of the aeration film disc at the bottom of the aeration tank should be between 15-20 cm. If it is too small, the air bubbles will have too much scouring force on the bottom of the bamboo basket, which may cause the biofilm at the bottom to fall off. At the same time, it should not be too large, which will reduce the utilization rate of the aeration tank volume.

[0058] After the modular combined suspended packing moving bed biofilm reactor is manufactured, the packing needs to be pretreated. The pretreatment method is to install and fix the bamboo baskets and bamboo balls on the hanging rods, add tap water to the aeration tank to the outlet pipe, soak the bamboo baskets and bamboo balls for 4-5 days, then drain the water in the tank, add domestic sewage to the outlet pipe, soak for 4-5 days, then discharge half of the sewage in the tank, and then add activated sludge for inoculation. The concentration of activated sludge is 6000-7000 mg / L, and the dosage is half of the effective volume of the aeration tank.

[0059] After the packing material has been pretreated, inoculation and biofilm formation are carried out. This inoculation and biofilm formation includes two stages: intermittent operation and continuous operation. After the inoculated activated sludge is added to the aeration tank, the aeration equipment is turned on and aerated for 6 hours, followed by 2 hours of settling. Finally, the supernatant is discharged, and domestic sewage is added to the effluent outlet to start a new cycle of aeration-settling-discharge. After four such cycles, continuous biofilm formation begins. Domestic sewage continuously enters the reactor, and the microorganisms in the sewage continuously use the organic matter, ammonia nitrogen, and phosphorus in the sewage to synthesize and proliferate, while also degrading and purifying these pollutants. The proliferating microorganisms continuously attach to and accumulate on the bamboo balls and bamboo baskets, thus forming a biofilm. When the removal rate of ammonia nitrogen in the sewage reaches more than 70%, it indicates that the biofilm formation is successful and continuous sewage treatment can begin.

[0060] The modular combined suspended packing moving bed biofilm reactor requires controlled aeration rate during operation; specifically, the aeration rate is a key control parameter during inoculation, biofilm formation, and continuous wastewater treatment. A suitable aeration rate not only ensures dissolved oxygen reaches 2-3 mg / L but also allows the bamboo balls to move vertically and remain suspended in the tank. Excessive aeration generates high buoyancy, causing the bamboo balls to aggregate on the water surface, preventing uniform contact with sludge and air bubbles, resulting in high energy consumption and low mass transfer efficiency. Conversely, insufficient aeration prevents the bamboo balls from achieving proper movement and suspension, affecting mass transfer and biodegradation. Considering both factors, the aeration rate in the reactor of this invention is controlled at 2.5-3.5 L / min.

[0061] After a period of use, the modular combined suspended packing moving bed biofilm reactor requires replacement of the suspended packing unit and the support rods. Specifically, the combined packing needs to be replaced regularly after a certain period of use, with bamboo balls and bamboo baskets replaced every 6-7 months and the supporting bamboo poles replaced every 12 months.

[0062] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A modular combined suspended packing moving bed biofilm reactor, comprising an aeration tank having an inlet pipe, an outlet pipe, and an vent pipe, characterized in that: Several suspended packing units are installed in the aeration tank by means of suspension. The suspended filler unit includes a bamboo basket and several bamboo balls installed inside the bamboo basket. The bamboo basket is woven from bamboo and has an opening at the top and several mesh holes on each of the other sides. The bamboo balls are woven from bamboo and have a hollow shape. The outer diameter of the bamboo balls is larger than the diameter of the mesh holes in the bamboo basket. An aeration device is installed at the bottom of the aeration tank, located below the suspended packing unit.

2. The modular combined suspended packing moving bed biofilm reactor according to claim 1, characterized in that: The suspended packing unit is suspended from a boom by a traction rope, which is installed in the aeration tank; one end of the traction rope is slidably installed on the boom via a lifting ring.

3. The modular combined suspended packing moving bed biofilm reactor according to claim 2, characterized in that: The aeration tank is provided with a mounting part that matches the hanger. The mounting part is either a slot in the aeration tank or a connecting block with a slot that is fixedly connected to the aeration tank.

4. The modular combined suspended packing moving bed biofilm reactor according to claim 2, characterized in that: The aeration tank is equipped with two or more booms, each boom suspending one or more suspended packing units.

5. The modular combined suspended packing moving bed biofilm reactor according to claim 1, characterized in that: The bamboo basket is woven from bamboo strips that are 1.5-2cm wide and 2-3mm thick, and has a square cross-section. The basket is not sealed at the top, and is 1m high, with a top side length of 0.7m and a bottom side length of 0.6m. The mesh size of the bamboo basket is greater than 2cm and less than 4cm.

6. The modular combined suspended packing moving bed biofilm reactor according to claim 1, characterized in that: The bamboo ball is made of bamboo strips that are 6-7 mm wide and 1-2 mm thick, woven into a hollow bamboo ball with a diameter of 5-6 cm. The surface of the ball has mesh holes with a mesh hole diameter greater than or equal to 4 mm and less than or equal to 6 mm.

7. The modular combined suspended packing moving bed biofilm reactor according to any one of claims 5 or 6, characterized in that: The bamboo strips are moso bamboo strips.

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