Perchlorate organic wastewater treatment device and process

Abstract

The present application relates to a perchlorate organic wastewater treatment device and process, comprising: first, obtaining biological reduction effluent; then, the biological reduction effluent with organic matter content higher than the preset threshold value is first provided with an aerobic environment, the organic matter content is reduced to the preset range, then a limited environment is provided, the ratio of ammonia nitrogen to organic matter is ensured to be within the preset range, and then the internal circulation of the denitrification and phosphorus removal module is introduced; the biological reduction effluent with organic matter content lower than the preset threshold value is introduced into the external circulation of the denitrification and phosphorus removal module; finally, after the denitrification and phosphorus removal reaction of the denitrification and phosphorus removal module, the effluent is introduced into the sedimentation module, and the solid-liquid separation is completed and discharged. The present application can be targeted at the characteristics of perchlorate organic matter, and the reaction path and treatment process are planned, so that the denitrification and phosphorus removal module can still efficiently remove nitrogen and phosphorus under the condition of perchlorate, a stable granular sludge system is formed, and the stability of the denitrification and phosphorus removal process is realized.

Description

Technical Field

[0001] This invention belongs to the field of environmental protection equipment, and in particular relates to a device and process for treating perchlorate organic wastewater. Background Technology

[0002] With the acceleration of global industrialization and the advancement of "dual carbon" goals, wastewater discharge problems in various industrial sectors have become increasingly prominent, among which the pollution problem of perchlorate organic wastewater is particularly serious. This type of wastewater contains high concentrations of perchlorates (such as... This wastewater contains complex organic pollutants and exhibits characteristics of multi-industry infiltration and multi-media migration, posing a potential threat to the ecological environment and human health. The generation of perchlorate organic wastewater is mainly concentrated in key industrial sectors such as fine chemicals, electroplating, pharmaceuticals, and pesticides.

[0003] Existing treatment technologies for perchlorate wastewater mainly include activated carbon adsorption, membrane separation, ion exchange resins, chemical reduction, and biological treatment. While physicochemical methods such as activated carbon adsorption, membrane separation, and ion exchange can achieve a certain degree of removal, they generally suffer from drawbacks such as high cost, limited applicability, and the potential for secondary pollution. Chemical reduction methods can reduce perchlorate to chloride ions, but they require strict operating conditions and may produce byproducts.

[0004] Biological treatment technologies utilize anaerobic microorganisms (such as Dechloromonas and Azospira) and perchlorate-reducing bacteria (such as Wolinella succinogenes and sulfur-autotrophic perchlorate-reducing bacteria) to metabolize perchlorate. These technologies are highly sensitive to environmental conditions (such as pH, temperature, and heavy metal content), requiring strict control of influent water quality. Furthermore, perchlorate organic wastewater has a complex composition, making it difficult to treat efficiently with a single technology. The mixed growth of heterotrophic and autotrophic bacteria leads to an imbalance in functional flora competition, resulting in a low proportion of AnAOB (Anaerobic Ammonium-Oxidizing Bacteria) (typically <30%), making it difficult to achieve the targeted enrichment and recovery of high-purity anaerobic ammonia oxidation granular sludge. Perchlorate wastewater... The presence of ions in large quantities can affect the removal of TP (Total Phosphorus), nitrogenous pollutants, and COD (Chemical Oxygen Demand; a measure of the organic matter content in wastewater).

[0005] Therefore, how to provide a device that can stably, efficiently, cost-effectively, and environmentally friendly treat perchlorate organic wastewater is a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0006] To solve at least one of the above-mentioned technical problems, the present invention provides a perchlorate organic wastewater treatment device, comprising: a biological reduction module, an oxygen control conversion module, a nitrogen and phosphorus removal module, and a sedimentation effluent module connected in sequence; The biological reduction module provides an anaerobic and redox environment to degrade large organic molecules in organic wastewater into smaller organic molecules and convert perchlorate into reduction products, resulting in biologically reduced effluent. The oxygen control conversion module is used to first provide an aerobic environment for biologically reduced effluent with organic matter content higher than a preset threshold, reducing the organic matter content to a preset range, and then provide a nutrient-limited environment to ensure that the ratio of ammonia nitrogen to organic matter is within a preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module; biologically reduced effluent with organic matter content lower than a preset threshold is introduced into the external circulation of the nitrogen and phosphorus removal module. After undergoing denitrification and phosphorus removal in the denitrification and phosphorus removal module, the solution is introduced into the sedimentation effluent module, where solid-liquid separation is completed before being discharged.

[0007] Furthermore, the biological reduction module includes: a first inlet, a separation unit, a functional packing area, a first outlet, and a second outlet; The first water inlet and the separation unit are arranged side by side at the top of the biological reduction module; The functional packing area is located below the separation unit; The first outlet is located above the separation unit to discharge biologically reduced effluent with an organic matter content higher than a preset threshold. The second outlet is located below the functional filler area to discharge biologically reduced effluent with an organic matter content lower than a preset threshold.

[0008] Furthermore, the bioreduction module also includes: a gas outlet B5, a first aeration port B6, and a first sludge discharge port B7; The separation unit adopts a three-phase separator. One end of the gas outlet is connected to the gas port of the three-phase separator, and the other end is connected to the first aeration port, which is located below the functional packing area. The first row of mud inlets is located at the bottom of the bioreduction module.

[0009] Furthermore, the oxygen control conversion module C includes: The aerobic unit is connected at one end to the first outlet of the biological reduction module and at the other end to the nutrient-limiting unit. The limiting aerobic unit is located below the nitrogen and phosphorus removal module and is connected to the bottom of the nitrogen and phosphorus removal module. An aeration unit is also installed inside the limiting aerobic unit. Beyond the pipeline, one end is connected to the second outlet of the organic matter biological reduction module, and the other end is connected to the outer reaction zone of the nitrogen and phosphorus removal module.

[0010] Furthermore, the aerobic unit includes: The second water inlet, located at the top, is lower than the first water outlet of the biological reduction module and receives the overflow from the first water outlet. The biological packing area in the middle is equipped with biological packing material, on which functional microorganisms are attached; The third outlet, located slightly below, is connected to the aeration control unit; The aerobic aeration components are located at the bottom; and the second sludge outlet is located at the bottom.

[0011] Furthermore, the sedimentation effluent module includes: an inclined tube sedimentation unit located in the middle, a fourth effluent outlet located above the inclined tube sedimentation assembly, and a third sludge discharge outlet located at the bottom.

[0012] Furthermore, the first control module includes: Dissolved oxygen concentration detectors installed in each module are used to control the anaerobic environment (dissolved oxygen concentration below 0.2 mg / L), the redox environment (reduction potential below -200 mV), the aerobic environment (dissolved oxygen concentration between 0.5 and 2.0 mg / L), and the nutrient-restricted environment (dissolved oxygen concentration between 0.2 and 0.5 mg / L). A pH meter is installed within the nitrogen and phosphorus removal module to control the pH value of the nitrogen and phosphorus removal environment to 6.5-8.0 and the C / ... The mass ratio is 2:1 or higher.

[0013] Furthermore, it also includes: an ultrasonic enhanced pretreatment module set at the front end of the biological reduction module; including: an inlet pipe, an ultrasonic generator, a CMC modified nZVI dosing point, an outlet of the ultrasonic enhanced pretreatment module, and a sludge discharge port of the ultrasonic enhanced pretreatment unit. The inlet pipe is used to introduce perchlorate organic wastewater; An ultrasonic generator is located inside the ultrasonic enhancement pretreatment module; The CMC-modified nZVI dosing point is located above the ultrasonic generator and is used to add chemical conditioning agents. The outlet of the ultrasonic enhanced pretreatment module is connected to the biological reduction module; it is used to introduce the pretreated wastewater into the biological reduction module. The sludge discharge port of the ultrasonic enhanced pretreatment unit is located at the bottom of the ultrasonic enhanced pretreatment module and is used to separate suspended solids and colloidal organic matter.

[0014] Furthermore, the ultrasonic enhanced pretreatment module also includes a second control module for monitoring the oxidation-reduction potential of the ultrasonic enhanced pretreatment module. When the oxidation-reduction potential is higher than a set threshold, the residence time of the wastewater in the ultrasonic enhanced pretreatment module is extended and the dosage of chemical conditioning agents is increased. When the oxidation-reduction potential is lower than the set threshold, the wastewater is introduced into the biological reduction module.

[0015] On the other hand, the present invention also provides a perchlorate organic wastewater treatment process, comprising: Introducing perchlorate organic wastewater provides an anaerobic and redox environment, degrading large organic molecules in the wastewater into smaller organic molecules, and converting perchlorate into reduction products to obtain biologically reduced effluent; For effluent with organic matter content exceeding a preset threshold, an aerobic environment is first provided to reduce the organic matter content to a preset range, followed by a nutrient-restricted environment to ensure the ammonia nitrogen to organic matter ratio is within a preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module; for effluent with organic matter content below the preset threshold, it is introduced into the external circulation of the nitrogen and phosphorus removal module. After undergoing denitrification and phosphorus removal reactions in the denitrification and phosphorus removal module, the solid-liquid separation is completed before discharge. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art are briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort. In the drawings, the same parts use the same reference numerals. The drawings are not drawn to scale.

[0017] Figure 1 This is a schematic diagram of an embodiment of a perchlorate organic wastewater treatment device according to the present invention; Figure 2 This is a schematic diagram of an embodiment of the bioreduction module of a perchlorate organic wastewater treatment device according to the present invention; Figure 3 This is a schematic diagram of an embodiment of the aerobic unit of a perchlorate organic wastewater treatment device according to the present invention; Figure 4 This is a schematic diagram of an embodiment of the ultrasonic enhanced pretreatment module of a perchlorate organic wastewater treatment device according to the present invention; Figure 5 This is a schematic diagram of an embodiment of a vertical flow reactor according to the present invention; Figure 6 This is a schematic diagram of an embodiment of a flow guiding device for a vertical flow reactor according to the present invention; Figure 7 This is a schematic diagram of an embodiment of a flow propulsion device for a vertical flow reactor according to the present invention; Figure 8 This is a top view schematic diagram of an embodiment of a flow-generating device for a vertical flow reactor according to the present invention; Figure 9 This is a top view schematic diagram of an embodiment of the impeller of a vertical flow reactor propulsion device according to the present invention; Figure 10 This is a schematic diagram of an embodiment of a crushing and screening device for a vertical flow reactor according to the present invention; Figure 11 This is a top view schematic diagram of an embodiment of a crushing and screening device for a vertical flow reactor according to the present invention. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] It should be noted that when a component is referred to as "fixed to" or "set on" another component, it can be directly on the other component or there may be an intervening component present. When a component is referred to as "connected to" another component, it can be directly connected to the other component or there may be an intervening component present.

[0020] It should also be noted that if the embodiments of the present invention involve directional indications, such as up, down, left, right, front, back, etc., these directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly. Furthermore, if the embodiments of the present invention involve descriptions such as "first," "second," "S1," "S2," "step one," "step two," etc., these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance, or implicitly indicating the number of technical features indicated or the order of method execution. Those skilled in the art will understand that anything that does not violate the inventive concept and does not contradict the inventive points should be included within the scope of protection of the present invention.

[0021] like Figure 1 As shown, the present invention provides a perchlorate organic wastewater treatment device, comprising: a biological reduction module B, an oxygen control conversion module C, a nitrogen and phosphorus removal module D, and a sedimentation effluent module E connected in sequence; The biological reduction module provides an anaerobic and redox environment to degrade large organic molecules in organic wastewater into smaller organic molecules and convert perchlorate into reduction products, resulting in biologically reduced effluent. The oxygen control conversion module is used to first provide an aerobic environment for biologically reduced effluent with organic matter content higher than a preset threshold, reducing the organic matter content to a preset range, and then provide a nutrient-limited environment to ensure that the ratio of ammonia nitrogen to organic matter is within a preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module; biologically reduced effluent with organic matter content lower than a preset threshold is introduced into the external circulation of the nitrogen and phosphorus removal module. After undergoing denitrification and phosphorus removal in the denitrification and phosphorus removal module, the solution is introduced into the sedimentation effluent module, where solid-liquid separation is completed before being discharged.

[0022] In this embodiment, the inherent characteristics of perchlorate organic wastewater are addressed: perchlorate has a significant inhibitory effect on microorganisms, especially various functional microorganisms, making it difficult for traditional biological treatment methods to directly achieve nitrogen and phosphorus removal. At the same time, the high concentration of organic matter causes the system to have a large load and poor stability, resulting in problems that cannot be treated by conventional biological processes.

[0023] This invention provides a perchlorate organic wastewater treatment device, which is an integrated device including a biological reduction module, an oxygen control and conversion module, a nitrogen and phosphorus removal module, and a sedimentation effluent module, and has at least the following beneficial effects: 1. The biological reduction module provides an anaerobic environment (dissolved oxygen concentration below 1.0 mg / L, preferably below 0.2 mg / L, at 20℃ and pH 6.5-8.0) and a redox environment (reduction potential below a set value). Under these conditions, perchlorate-reducing bacteria... such as Dechloromonas (Dechlorinating bacteria) Azospira (Bacillus species), under the action of specific reductases (such as perchlorate reductase and chlorite reductase), utilize anaerobic environments and specific redox potential conditions. Organic matter in wastewater acts as an electron donor, providing energy for microbial metabolism, while perchlorate is reduced as an electron acceptor. This forms a coupled metabolic system, producing the toxic intermediate chlorite (e.g., chlorite). The rapid conversion of perchlorate () avoids the accumulation of intermediate products that hinder further reactions of perchlorate, thus enabling the conversion of perchlorate () Through a series of reduction reactions, it is gradually converted into non-toxic chloride ions. This method achieves stable treatment of perchlorate organic wastewater, ensuring the degradation of organic matter, stably and efficiently degrading large molecular organic matter into small molecular organic matter, and converting perchlorate into reduction products to obtain biologically reduced effluent. 2. Based on the specific conditions of the perchlorate organic wastewater, the following selective methods are employed: For biologically reduced effluent with organic matter content exceeding a preset threshold, an aerobic environment is first provided to reduce the organic matter content to the preset range. Although the organic matter content is reduced, the ratio of ammonia nitrogen to organic matter remains too high during the reaction. Therefore, a restricted nutrient environment is then provided to ensure the ammonia nitrogen to organic matter ratio is within the preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module. This allows the effluent to first participate in the internal circulation and grow into larger particles before participating in the external circulation. For biologically reduced effluent with organic matter content below the preset threshold, the effluent is introduced into the external circulation of the nitrogen and phosphorus removal module, participating in the external circulation first and then the internal circulation. Subsequent nitrogen and phosphorus removal treatment is then performed, followed by solid-liquid separation through the sedimentation effluent module before discharge. The entire equipment achieves efficient nitrogen and phosphorus removal and meets wastewater discharge standards while maintaining a compact structure and stable operation. This overcomes the problems of low efficiency in treating perchlorate wastewater and easy inhibition of microorganisms in existing technologies.

[0024] The key to this invention lies in its targeted planning of the reaction pathway and treatment process for perchlorate organic matter, taking into account its characteristics: First, an anaerobic reduction reaction is carried out through a biological reduction module to degrade large-molecule organic matter into small-molecule organic matter and convert perchlorate into reduction products, resulting in biologically reduced effluent. Then, depending on the specific conditions of the biologically reduced effluent, wastewater with high organic matter content is first aerobically treated to consume a portion of the small-molecule organic matter, and then further depleted through nutrient restriction to control the ratio of ammonia nitrogen to organic matter within a preset range. The wastewater is then introduced into the internal circulation of the nitrogen and phosphorus removal module, noting that this portion of the solution enters the nitrogen and phosphorus removal process from the internal circulation. Wastewater with low organic matter content is introduced into the external circulation of the nitrogen and phosphorus removal module, again noting that this portion of the solution enters the nitrogen and phosphorus removal process from the external circulation. This ensures that the influent to the nitrogen and phosphorus removal module meets the influent requirements, enabling efficient removal of nitrogen and phosphorus even under perchlorate conditions, forming a stable granular sludge system, and achieving stability in the nitrogen and phosphorus removal process.

[0025] (I) Biological Reduction Module Preferred, such as Figure 2 As shown, the biological reduction module B includes: a first inlet B0, a separation unit B1, a functional packing area B2, a first outlet B3, and a second outlet B4. The first water inlet and the separation unit are arranged side by side at the top of the biological reduction module; The functional packing area is located below the separation unit; The first outlet is located above the separation unit to discharge biologically reduced effluent with an organic matter content higher than a preset threshold. The second outlet is located below the functional filler area to discharge biologically reduced effluent with an organic matter content lower than a preset threshold.

[0026] More preferably, the bioreduction module also includes: a gas outlet B5, a first aeration port B6, and a first sludge discharge port B7; The separation unit adopts a three-phase separator. One end of the gas outlet is connected to the gas port of the three-phase separator, and the other end is connected to the first aeration port, which is located below the functional packing area. The first row of mud inlets is located at the bottom of the bioreduction module.

[0027] In this embodiment, a preferred embodiment of the bioreduction module is provided. Perchlorate organic wastewater entering through the first inlet at the top falls into the functional packing zone. The granular components within the packing zone serve as attachment points for functional microorganisms (functional microorganisms for organic matter decomposition and functional microorganisms capable of decomposing perchlorate, i.e., organic matter degrading bacteria and perchlorate decomposing bacteria, such as perchlorate-reducing bacteria). This provides an immobilized carrier for the functional microorganisms, effectively preventing their direct loss with the water flow, increasing their retention rate and activity maintenance time in the anaerobic environment, and improving the system's reaction efficiency and biodiversity. After the reaction, the perchlorate in the wastewater is removed. Restore to The process generates biogas (a mixture of methane, carbon dioxide, and hydrogen sulfide, etc.). Under the action of the first aeration port at the bottom, the decomposed organic wastewater enters the three-phase separator during its ascent, achieving effective separation of the gas, liquid, and solid phases. The biogas is discharged from the top gas production outlet and forms a mixed liquid containing granular sludge and high concentrations of functional microorganisms below it. This part of the organic matter, including macromolecules and particulate matter of moderate molecular weight, is blocked below and directly introduced into the external circulation of the subsequent nitrogen and phosphorus removal module through the second outlet below the functional packing area. The liquid wastewater with high organic matter content is introduced into the internal circulation of the nitrogen and phosphorus removal module through the first outlet at the top, first aerobic, then nutrient-limited, and then nutrient-limited. Of particular importance is the precise placement of the first and second effluent outlets. Their locations allow for adaptive selection of the effluent from the biological reduction module, guiding effluent with varying organic matter content through different processes to different locations within the nitrogen and phosphorus removal unit, resulting in more stable and efficient subsequent nitrogen and phosphorus removal processes. For example, the second effluent outlet, positioned below the functional packing zone, ensures that the mixed liquor formed below the packing zone, containing granular sludge and a high concentration of functional microorganisms—that is, organic matter of moderate molecular weight, including some macromolecules and particulate matter—can be efficiently and rapidly introduced directly into the external circulation of the nitrogen and phosphorus removal module without participating in the lower reactions. This also prevents the water flowing from the second effluent outlet from impacting the functional microorganisms, maximizing the preservation of functional microorganisms capable of decomposing organic matter and perchlorate. Through synergy, the mixed liquor maintains a stable biological treatment environment in the reactor, effectively preventing the loss of granular sludge and attached microorganisms, thereby improving the system's organic matter and perchlorate removal efficiency. The organic wastewater after separation and treatment is then introduced into the subsequent nitrogen and phosphorus removal unit to achieve graded purification and gradual compliance with discharge standards.

[0028] Furthermore, the biogas outlet is connected to the first and second aeration ports, allowing biogas to be recycled back to the area below the functional packing material, thus enabling biogas recovery and utilization. This arrangement utilizes the biogas recirculation to create gas agitation and scouring within the functional packing material area, effectively preventing sedimentation and clogging on the packing surface while enhancing the contact and mass transfer process between wastewater and the functional microorganisms attached to the packing material. This improves the system's circulation efficiency and reaction rate while maintaining the activity and stability of the microbial community in the packing material area, thereby achieving efficient and long-term stable operation of the anaerobic reaction process. Optionally, the biogas outlet can also be connected to external biogas purification and energy conversion equipment to achieve a more environmentally friendly and clean energy effect. The deposited granular sludge can be discharged through the sludge discharge port to the organic matter bioreduction module.

[0029] More preferably, the functional filler area includes one or more granular components of zeolite, ceramsite, or composite materials, with a particle size of 5-20 cm, and the filler accounts for 2-5% of the entire bioreduction module.

[0030] (II) Oxygen Control Conversion Module More preferably, such as Figure 1 As shown, the oxygen control conversion module C includes: The aerobic unit C1 is connected at one end to the first outlet of the biological reduction module and at the other end to the nutrient-limiting unit. The limiting nutrient unit C2 is located below the nitrogen and phosphorus removal module and is connected to the bottom of the nitrogen and phosphorus removal module. An aeration unit C3 is also installed inside the limiting nutrient unit. Beyond pipeline C4, one end is connected to the second outlet of the organic matter biological reduction module, and the other end is connected to the outer reaction zone of the nitrogen and phosphorus removal module.

[0031] In this implementation, a preferred embodiment of the oxygen-controlled conversion module is provided. On the one hand, through the aerobic unit and the nutrient-limiting unit, a pathway is constructed between the first outlet of the biological reduction module and the bottom of the nitrogen and phosphorus removal module. The converted effluent with an organic matter content higher than a preset threshold is introduced into the bottom of the nitrogen and phosphorus removal module through the aerobic and nutrient-limiting units, and then into the internal circulation of the nitrogen and phosphorus removal module through the aeration unit. First, the oxygen-rich environment provided by the aerobic unit is used to further oxidize the organic matter that has not been completely degraded under upstream anaerobic or anoxic conditions, promoting the activity of nitrifying bacteria and polyphosphate-accumulating bacteria, thereby achieving the initial removal of ammonia nitrogen and partial absorption of phosphorus. This, in turn, creates stable influent conditions for the downstream oxygen-limiting unit, reducing the nitrogen and phosphorus removal efficiency caused by fluctuations in influent water quality. The system addresses the issue of declining efficiency. Simultaneously, the aerobic unit, acting as an intermediate regulating link, effectively buffers the process coupling contradictions between the nitrogen and phosphorus removal modules and the limiting oxidation unit, enhancing the overall system's resistance to shock loads and operational stability. It establishes an adaptive reaction path that first promotes aerobic processes, then limits nutrient intake, continuously consuming organic matter to ensure that the organic matter content and the ammonia nitrogen to organic matter ratio reach the set range before being introduced into the internal circulation of the nitrogen and phosphorus removal module. On the other hand, by bypassing the pipeline, a pathway is constructed between the second outlet of the biological reduction module and the external reaction zone of the nitrogen and phosphorus removal module. This allows the converted effluent with organic matter content below the preset threshold to be directly introduced into the external reaction zone of the nitrogen removal module, creating a suitable reaction path for direct input into the external circulation of the nitrogen and phosphorus removal module.

[0032] Preferred, such as Figure 3 As shown, the aerobic unit C1 includes: The second inlet C11, located at the top, is lower than the first outlet of the biological reduction module and receives the overflow from the first outlet. The biological packing zone C12 in the middle is equipped with biological packing material, on which functional microorganisms are attached; The third outlet C13, located slightly below, is connected to the aquaculture restriction unit; The aerobic aeration component C14 is located at the bottom; and the second sludge outlet C15 is located at the bottom.

[0033] In this embodiment, the second inlet at the top of the aerobic unit, being lower in height than the first outlet of the biological reduction module, can directly receive the overflow water. This overflow water flows through the biological packing material in the terminal biological packing zone, providing a stable attachment and growth carrier for aerobic microorganisms. This allows the microorganisms to form a dense biofilm, effectively trapping and degrading organic pollutants in the wastewater, reducing the organic matter content, and initially adjusting the ratio of organic matter to ammonia nitrogen in the wastewater. The aeration port, located below the packing zone, provides continuous aeration, not only providing sufficient dissolved oxygen for the microorganisms but also creating a gas-liquid agitation effect in the water, promoting full contact between the wastewater and the biofilm attached to the packing material, enhancing mass transfer efficiency and reaction rate. After the reaction, the wastewater flows through the third outlet into the subsequent limited-aeration unit. Simultaneously, the second sludge discharge port discharges deposited sludge and inert substances, ensuring a clean and stable reaction environment.

[0034] (III) Sedimentation and Effluent Module Preferred, such as Figure 1 As shown, the sedimentation effluent module E includes: an inclined tube sedimentation unit E1 located in the middle, a fourth effluent outlet E2 located above the inclined tube sedimentation assembly, and a third sludge discharge outlet located at the bottom.

[0035] In this embodiment, the inclined tube sedimentation unit is used to enable suspended particulate matter and residual sludge to settle quickly and efficiently, thereby significantly improving the solid-liquid separation effect; the fourth outlet is set above the inclined tube sedimentation assembly to ensure that the effluent is clear and can be stably introduced into the subsequent units, avoiding sediment from being carried out with the water flow, thus improving the effluent quality and ensuring long-term stable operation of the system; at the same time, the residual sludge is discharged through the third sludge discharge port.

[0036] (iv) Control Module Preferably, the perchlorate organic wastewater treatment device may also be configured with a first control module, including: Dissolved oxygen concentration detectors installed in each module are used to control the anaerobic environment (dissolved oxygen concentration below 0.2 mg / L), the redox environment (reduction potential below -200 mV), the aerobic environment (dissolved oxygen concentration between 0.5 and 2.0 mg / L), and the nutrient-restricted environment (dissolved oxygen concentration between 0.2 and 0.5 mg / L). And a pH meter installed within the nitrogen and phosphorus removal module, used to control the pH value of the nitrogen and phosphorus removal environment to 6.5-8.0, C / The mass ratio is 2:1 or higher.

[0037] In this embodiment, a first control module is provided to control specific indicators of each module and environment to further improve the treatment efficiency and effluent quality of perchlorate organic wastewater. Preferably, the control module also includes other monitoring and judgment components, such as water level sensors, flow sensors, and water quality sensors respectively installed in the ultrasonic enhanced pretreatment module, the nitrogen and phosphorus removal module, and the sedimentation effluent module; the judgment components control the flow rate of each inlet, outlet, and sludge discharge port, as well as the aeration rate at each aeration location, based on the water level data, flow data, and water quality data monitored by the monitoring components.

[0038] In this embodiment, monitoring components monitor the water level, flow rate, and water quality parameters of each module in real time. Water level sensors track changes in the liquid level of each unit to prevent overflow or idling; flow sensors detect the actual influent and effluent flow rates for comparison with set operating conditions; and water quality sensors monitor key indicators such as COD, ammonia nitrogen, total phosphorus, and perchlorate concentration. Based on this real-time monitoring data, the decision-making component intelligently analyzes the operating status of each unit and executes corresponding control actions: when the influent load fluctuates, it automatically adjusts the influent and effluent valves to maintain stable hydraulic load; when insufficient dissolved oxygen or stirring intensity is detected, it automatically controls the aeration and stirring equipment to start or adjust their intensity to ensure the activity of the microbial community; when water quality indicators deviate from target values, it automatically controls the dosing unit to add conditioning agents to optimize simultaneous nitrogen and phosphorus removal; when the sludge volume in the sedimentation unit reaches a set threshold, the decision-making component issues a sludge discharge command to ensure effective sludge-water separation and effluent quality. Through this design, the control unit achieves dynamic monitoring and closed-loop automatic control of the entire wastewater treatment system. On the one hand, it ensures stable treatment of perchlorate organic wastewater under different water quality and quantity conditions; on the other hand, it reduces human intervention and operational errors, improving the level of intelligence and reliability of operation. Simultaneously, because automated control can dynamically adjust aeration volume, chemical dosage, and sludge discharge cycle based on real-time data, it can effectively reduce energy consumption and reagent consumption, extend equipment lifespan, and ensure that the system maintains efficient, stable, and economical treatment results during long-term operation.

[0039] (V) Ultrasonic Enhancement Pretreatment Module More preferably, the perchlorate organic wastewater treatment device of the present invention further includes: an ultrasonic-enhanced pretreatment module A disposed at the front end of the biological reduction module B. During use, the wastewater is first homogenized by the ultrasonic-enhanced pretreatment module to ensure thorough and uniform mixing of various substances; then, chemical conditioning is performed, such as adding polyalumina and / or a reducing agent, causing impurities, suspended solids, and heavy metals to precipitate and separate the precipitates, while maintaining a specific redox potential. The pretreated sludge is introduced into the biological reduction module, providing an anaerobic environment and a redox potential environment below a first set value (e.g., -200mV). A portion of the treated wastewater is directly introduced into the external circulation of the nitrogen and phosphorus removal module; another portion passes through the aerobic unit to the oxygen-limiting unit disposed below the nitrogen and phosphorus removal module. By limiting the aeration of the aeration unit at this location, the dissolved oxygen concentration in the wastewater is controlled within a preset range, further consuming organic matter and controlling the ratio of ammonia nitrogen to organic matter within a preset range. The wastewater is then introduced into the internal circulation of the nitrogen and phosphorus removal module. In the nitrogen and phosphorus removal module, a stable granular sludge system is formed, and the wastewater undergoes nitrogen and phosphorus removal treatment. Wastewater treated for nitrogen and phosphorus removal is introduced into a sedimentation effluent module for sedimentation and separation of deposited sludge, ensuring effluent quality and providing a stable, efficient, low-cost, and environmentally friendly device for treating perchlorate organic wastewater.

[0040] Preferred, such as Figure 4 As shown, the ultrasonic enhanced pretreatment module A includes: an inlet pipe A1, an ultrasonic generator A2, a CMC modified nZVI dosing point A3, an outlet of the ultrasonic enhanced pretreatment module A4, and a sludge discharge port of the ultrasonic enhanced pretreatment unit A5. The inlet pipe is used to introduce perchlorate organic wastewater; An ultrasonic generator is installed inside the ultrasonic enhancement pretreatment module; preferably, it is an immersion-suspended type, with an optimal acoustic power density of 100-2000 W / m3 / h and an ultrasonic frequency of 20-40 kHz. The CMC-modified nZVI dosing point is located above the ultrasonic generator and is used to add chemical conditioning agents; preferably, the CMC-modified nZVI dosing amount (molar ratio) is nZVI / (5-10):1 The outlet of the ultrasonic enhanced pretreatment module is connected to the biological reduction module; it is used to introduce the pretreated wastewater into the biological reduction module. The sludge discharge port of the ultrasonic enhanced pretreatment unit is located at the bottom of the ultrasonic enhanced pretreatment module 1 and is used to separate suspended solids and colloidal organic matter.

[0041] More preferably, the pH value in the ultrasonic enhanced pretreatment module is 3-6, and the hydraulic retention time is 0.2-1 h. Preferably, it also includes a second control module for monitoring the oxidation-reduction potential of the ultrasonic enhanced pretreatment module. When the oxidation-reduction potential is higher than a set threshold, the retention time of the wastewater in the ultrasonic enhanced pretreatment module is extended, and the dosage of chemical conditioning agents is increased; until the oxidation-reduction potential is lower than the set threshold, the wastewater is introduced into the biological reduction module.

[0042] In this embodiment, the CMC-modified nZVI dosing point is used to add chemical conditioning agents, such as polymeric alumina and / or reducing agents adapted to perchlorate, to cause impurities, suspended solids, and heavy metals to precipitate and maintain a redox potential below a set value. For example, when the redox potential is detected to be higher than -200mV, the reaction residence time of the ultrasonic-enhanced pretreatment module is extended, the amount of reducing agent is increased, and the stirring intensity of the ultrasonic generator is increased to ensure that the added chemical conditioning agents can be fully mixed with the incoming wastewater to form a homogeneous mixture, which is conducive to the full reaction of pollutants and agents. After homogenization, the mixture is separated by sedimentation through the sludge discharge port of the ultrasonic-enhanced pretreatment unit at the bottom, effectively removing large particulate suspended solids and some colloidal organic matter, reducing the load on subsequent treatments, and improving the biodegradability of the wastewater. The separated perchlorate organic wastewater is introduced into the biological reduction module through the outlet of the ultrasonic-enhanced pretreatment module to ensure the stability and effectiveness of subsequent reactions.

[0043] It is worth noting that the key to this invention lies in: planning the reaction path and treatment process for perchlorate organics based on their characteristics. The core invention provides preferred embodiments and environmental index requirements for each module to improve the treatment efficiency and effluent quality of perchlorate organic wastewater. However, the structure and specific environmental indexes of each module are not limited to these. The focus is on the introduction of the biological reduction module and the oxygen control conversion module to stabilize the influent conditions of each zone of the nitrogen and phosphorus removal unit.

[0044] As a second inventive point of this invention, the present invention also provides a nitrogen and phosphorus removal module, such as... Figure 5-11 As shown, the device for treating the above-mentioned perchlorate organic wastewater includes: an outer cylinder 1, an inner cylinder 2, a flow guiding device 3, a flow propulsion device 4, an aeration device 5, and a crushing and screening device 6. The inner cylinder is connected to the outer cylinder, separating the inner reaction chamber 11 located inside the inner cylinder and the outer reaction chamber 12 located between the inner cylinder and the outer cylinder; The flow guiding device, connected to the axial bottom end of the inner cylinder, includes a flow guiding member 31; a sieve hole 32 disposed on the upper side wall of the flow guiding member 31; and a through hole 33 disposed in the flow guiding member 31; the size of the sieve hole 32 is smaller than the size of the through hole 33. A flow propulsion device is installed at the sieve opening; The aeration device is installed inside the through hole and located below the flow propulsion device; The crushing and screening device is located below the flow guiding device; Sludge discharge port 9 is located below the crushing and screening device.

[0045] In this embodiment, a vertical flow reactor of the present invention is provided, comprising: an outer cylinder, an inner cylinder, a flow guiding device, a flow propulsion device, an aeration device, and a crushing and screening device. Specifically, the inner cylinder, the flow guiding device, the flow propulsion device, the aeration device, and the crushing and screening device are all located inside the outer cylinder; the outer cylinder and the inner cylinder can be selected as tower-shaped, circular, square, etc., to form inner and outer reaction chambers, and a flow guiding device is provided at the bottom of the inner cylinder, a flow propulsion device is provided at the sieve hole position, an aeration device is provided in the through hole, and a crushing and screening device is provided below the flow guiding device, to assemble and form the vertical flow reactor of the present invention.

[0046] During operation, the flow propulsion device, aeration device, and crushing and screening device are activated: The aeration device aerates upwards, creating an upward flow in the inner reaction chamber and a downward flow in the outer reaction chamber. Specifically, during aeration, the mixture in the reaction chamber is a three-phase mixture of gas, liquid, and solid. The mixture can follow the airflow to form an upward flow in the center of the inner reaction chamber. When it rises to a certain height, under the action of gravity, the mixture can form a downward flow in the outer reaction chamber. Next, part of the downward flow flows back into the inner reaction chamber through the guide device located at the bottom. Specifically: small particles flow into the inner reaction chamber through the sieve holes on the guide device, while large particles flow into the inner reaction chamber through the through holes in the guide device; due to the different sizes of the sieve holes and through holes, the flow of large and small particles is separated; taking wastewater treatment as an example, clear liquid, flocculent sludge, and small-diameter granular sludge can enter the inner reaction chamber through the small-sized sieve holes to carry out internal circulation; large-diameter granular sludge is intercepted and can only fall down along the guide device, entering the inner reaction chamber through the large-sized through holes to carry out internal circulation.

[0047] The key to this invention lies in its distinction from existing technologies. It incorporates a flow-pushing device at the screen opening position to propel the flow upwards. Furthermore, the aeration device is positioned within the through-hole, below the flow-pushing device, not below the entire flow-guiding device. This allows the aeration device within the through-hole to increase the upward flow velocity, working in conjunction with the flow-pushing device at the screen opening position to push the flow upwards, drawing fluid upwards from the sides and creating a negative pressure below the screen openings. This pressure continuously draws fluid in through the screen openings of the flow-guiding component. Simultaneously, the gas introduced by the aeration device, after rising, can combine with flocculent sludge or small-diameter granular sludge, further enhancing the upward flow. The flow rate, combined with the propulsion device located at the sieve opening, increases the upward flow velocity of the mixed liquid. More importantly, the particles carried in the fluid will rise in the direction of fluid movement, exhibiting turbulent flow. Tiny air bubbles that may be carried in the particles will be separated under the action of turbulence and mutual collisions driven by the propulsion device. After degassing, the particles can better contact or adsorb and bind with dissolved substances in a turbulent mixed state. Even more importantly, the crushing and screening device located below can accelerate the crushing of large-diameter sludge particles falling from above as they grow, so that they can further enter the internal circulation and improve reaction efficiency.

[0048] Compared to the prior art mentioned in the background section, the key features are: a) a flow-pushing device is installed at the screen opening position; b) the aeration component is moved into the flow-guiding device and is located below the flow-pushing device 4, not below the entire flow-guiding device; c) a crushing and screening device is installed below the flow-guiding device. The selection of these three structures and the design of their specific positions are the result of the inventor's creative labor, not a simple conventional technical choice. With this improvement: 1. The flow-pushing device at the screen opening position and the aeration device not far from it can form a negative pressure near the screen opening, quickly drawing in clean water, flocs, and other small sludge particles, accelerating the upper internal circulation, and increasing the efficiency of the clear liquid effluent from the purified water outlet. 1. Improve purification efficiency; 2. The aeration device is located inside the flow guiding device, not below it, which completely isolates the upper and lower internal circulation layers, preventing the lower internal circulation particles from contacting the aeration device too early. This provides more space and reaction time for the lower non-purified water, such as large sludge particles that are blocked by the screen holes but enter through the through holes, promoting the circulation effect of the lower non-purified water and comprehensively improving the overall reaction effect; 3. Combined with the crushing and screening device below, it further crushes the large-diameter sludge particles falling from above, increasing the exposed area of ​​inorganic matter, promoting the anaerobic reaction at this stage, and further improving the reaction efficiency. Its beneficial effects are self-evident.

[0049] In this invention, the flow guiding device, the flow pushing device, the aeration device, and the crushing and screening device are ingeniously designed into an integrated system. They work together to exert their effects, and none of them can be omitted. This system is perfectly applied to granular sludge systems that require both aerobic and anaerobic conditions. It fundamentally overcomes the inherent defects of activated sludge and packing biofilm systems, such as the lack of selectivity of functional microorganisms and the blockage caused by excessive accumulation of biofilm. The propulsion device at the top of the inner cavity of the flow guiding device and the aeration device below it can create negative pressure near the screen holes, accelerate the internal circulation of the upper clear liquid, promote the aerobic (nitrification) reaction, and directly separate it from the internal circulation of the bottom granular sludge, forming completely different movement paths for clear liquid (sewage) and sludge (anaerobic ammonia oxidation granular sludge). This achieves separation of sewage retention time and sludge retention time within the same reactor. Furthermore, it significantly extends the retention (reaction) time of the anaerobic ammonia oxidation granular sludge under anaerobic conditions, accumulating more anaerobic ammonia oxidation functional microorganisms with slow self-proliferation rates, which is beneficial for improving the efficiency of anaerobic ammonia oxidation reaction and provides favorable conditions for efficient synergy among different functional microorganisms, thereby enhancing the overall autotrophic denitrification effect. In addition, the crushing and screening device below further crushes the aged, large-diameter granular sludge, separates inorganic components, promotes the renewal of granular sludge, and further improves reaction efficiency. Its beneficial effects are self-evident.

[0050] In summary, the vertical flow reactor provided by this invention can solve problems such as insufficient circulating power of mixed liquor in tower-type, circular, and square vertical flow reactors, low upward flow velocity of biological granular sludge, poor selectivity of different functional bacterial communities, low accumulation of microorganisms with slow self-proliferation rate (easy to be lost), difficulty in separating microbubbles entrained in biological granular sludge, lack of controlled diversion of the circulating path of mixed liquor in the reactor, overlap of the flow trajectories of clear liquid and biological granular sludge, and unsatisfactory functional reaction conditions of biological granular sludge. Thus, it can improve the overall circulation efficiency of the vertical flow reactor, improve the purification effect, and reduce the purification time. Taking wastewater treatment as an example, the wastewater to be treated in the reaction chamber (inner reaction chamber and outer reaction chamber) reacts with the flocculent sludge and granular sludge through upward and downward flow cycles. This allows various microorganisms to exist in the form of a large amount of granular sludge with appropriate particle size, maximizing the abundance and activity of anaerobic ammonia oxidation microorganisms. This efficiently absorbs ammonia nitrogen, nitrite nitrogen, and small amounts of organic matter and phosphorus pollutants in the wastewater, thereby biodegrading the pollutants in the wastewater. This achieves economical, efficient, and environmentally friendly water purification. Moreover, the reasonable layout can greatly enhance the efficiency of autoaerobic biological denitrification reaction, reduce wastewater treatment costs, and reduce carbon emissions.

[0051] Preferably, the outer cylinder has a cylindrical upper end and a tapered lower end to achieve better external downward flow guidance and external circulation guidance for large-particle sludge. More specifically, the inner cylinder is a cylindrical straight cylinder located above the outer cylinder, with a height of 30% to 70% of the outer cylinder; the lower edge of the inner cylinder has the same geometric dimensions as and is connected to the upper edge of the flow guiding device, forming an externally continuous and internally connected configuration to meet actual reaction requirements.

[0052] More preferably, the present invention also provides a flow guiding device, which optimizes the design of various aspects of the above-mentioned flow guiding device; the flow guiding component includes an inner inclined flow guiding part 311, a vertical flow guiding part 312 and an outer inclined flow guiding part 313; The inner inclined guide section 311, the vertical guide section 312 and the outer inclined guide section 313 are connected end to end from top to bottom to form a hollow guide structure, forming a through hole inward; The sieve holes are disposed on the sidewalls of the inclined guide section and / or the vertical guide section. Preferably, the sieve holes include a multi-stage sieve hole group arranged from top to bottom; the aperture of each stage of the sieve hole group increases sequentially from top to bottom, so that particles of different sizes enter the internal circulation at different heights through the sieve hole groups of different apertures, and are further diverted.

[0053] In this embodiment, a preferred embodiment of the flow guiding device of the present invention is given. Since the present invention adds a flow pushing device at the sieve hole position, it greatly increases the negative pressure and particle adsorption capacity at the sieve hole position. Although small-diameter particles can pass through the sieve hole and enter the internal circulation, a small amount may also get stuck between the inner inclined flow guiding part and the outer inclined flow guiding part of the existing flow guiding device. As time goes by, the more particles accumulate, the more likely they are to block part of the sieve hole and occupy the outer space of the flow guiding part, which seriously affects the speed of the internal and external circulation. Therefore, the flow guiding device of the present invention adds a vertical flow guiding section as a transition section between the inner inclined flow guiding section and the outer inclined flow guiding section. For the external circulation: the vertical flow guiding section of this transition section can form a large angle with the inner inclined flow guiding section upward, avoiding particle accumulation at the screen hole position and affecting the internal circulation; downward, it can also form a large angle with the outer inclined flow guiding section, delaying the falling time of larger particles that have not passed through the screen hole in the external circulation, forming large particles for further crushing and screening by the crushing and screening device, making full use of the external circulation reaction in this section; for the internal circulation, it can effectively extend the circulation path of large particle sludge, and the small particle material passing through the screen hole circulates quickly in the screen hole. Due to the setting of the transition section, the circulation path is staggered with that of large particle sludge, resulting in significant stratification of clear liquid, flocculent sludge, small particle sludge, and large particle sludge, further refining the flow path division of different particles, and improving the circulation efficiency of clear liquid, flocculent sludge, small particle sludge, and large particle sludge.

[0054] More preferably, the vertical guide section is a hollow cylindrical structure that extends vertically and is coaxially arranged with the inner inclined guide section and the outer inclined guide section and connected end to end, so that a continuous hollow through-flow channel is formed between the inner inclined guide section, the vertical guide section and the outer inclined guide section.

[0055] In this embodiment, the vertical guide section is configured as a hollow cylindrical structure extending vertically, and is coaxially arranged with the inner and outer inclined guide sections and connected end to end. In this case, the outer wall of the vertical guide section forms obtuse angles with the inner and outer inclined guide sections, making the flow transition smoother and avoiding the technical problem of stagnation zones or dead zones in the flow of flocculent sludge, small-diameter granular sludge, and large-diameter granular sludge.

[0056] More preferably, the heights of the inner inclined guide section, the vertical guide section, and the outer inclined guide section increase sequentially; and the inner inclined angle θ1 of the inner inclined guide section is smaller than the outer inclined angle θ2 of the outer inclined guide section.

[0057] In this embodiment, the inner inclined guide section, the vertical guide section, and the outer inclined guide section are further defined with varying heights. This design is not a conventional technical choice but has substantial technical benefits. 1. Height setting: This allows for adaptation to the reaction time of reactants at different locations. As the particle size increases with depth, the required reaction time also increases. The heights of the inner, transition, and outer inclined sections increase sequentially, providing sufficient reaction time for particles at each location and promoting overall reaction efficiency. This allows flocculent sludge, small granular sludge, and large granular sludge to form circulation paths of different lengths during flow, achieving particle-level flow and effectively separating their respective circulation paths. 2. Inclination angle setting: The inner inclined angle of the inner inclined guide section is smaller than the outer inclined angle of the outer inclined guide section. This makes the flow path of water and entrained flocculent sludge and small-diameter granular sludge within the guide device faster, which is beneficial for accelerating the circulation velocity of flocculent sludge and small-diameter granular sludge. At the same time, the larger outer inclined angle facilitates a slower circulation velocity for large granular sludge within the guide device, effectively avoiding particle mixing interference.

[0058] More preferably, the flow propulsion device is located at the connection between the inner inclined flow guide and the vertical flow guide; The aeration device is installed at the connection between the vertical guide section and the outer inclined guide section; The crushing and screening device is located below the outer inclined guide section.

[0059] In this embodiment, the positions of the flow-propelling device, aeration device, and crushing and screening device in the internal circulation are further rationally arranged. These positions, though seemingly simple, represent significant changes made by the inventors through creative effort to adapt to the specific realities of the internal circulation: 1. The function of the flow-propelling device: Located at the connection between the inner inclined guide section and the vertical guide section, the flow-propelling device generates negative pressure that can cover the screen holes on the side wall of the inner inclined guide section over a large area, making the circulation rate of clear liquid, flocculent sludge, and small granular sludge more efficient at the screen hole location, thus accelerating the growth rate of flocculent sludge and small-diameter granular sludge. 2. The function of the aeration device and crushing and screening device: Large particles blocked by the screen holes enter the internal circulation through the through holes, reaching below the outer inclined guide section. At this point, granular sludge of suitable size passes through the crushing and screening device and continues the circulation reaction, while excessively large granular sludge is blocked by the crushing and screening device and remains on the screen surface, where it is crushed and then participates in the circulation again. Because the aeration device is located at the connection between the vertical guide section and the outer inclined guide section, the particles passing through the crushing and screening device only undergo sufficient anaerobic reaction within the outer inclined guide section under the influence of the liquid flow velocity. This extends the reaction time in this section, allowing the reaction to proceed until it reaches the aeration device at the junction of the vertical and outer inclined guide sections. There, the particles are aerated and react with the flocculent sludge and small granular sludge above in an aerobic environment. This structural combination enables the vertical flow reactor to simultaneously achieve multi-functional coupled control of flow propulsion, aeration, crushing and screening during operation. This promotes the orderly stratified circulation of flocculent sludge, small granular sludge, and large granular sludge, allowing them to complete their respective reactions at appropriate locations, effectively improving the circulation reaction efficiency and organic matter removal efficiency.

[0060] In the above embodiments, the specific locations of the propulsion device, aeration device, and crushing and screening device are further planned, and the specific structure of the flow guiding device, as well as the height and angle settings of each structure, are defined. While seemingly simple, this design yields unexpected beneficial effects. This structured design allows the outer reaction chamber to be naturally divided into an external downward flow channel, an external reaction zone, and a particle conditioning zone, connected sequentially from top to bottom. Specifically: the external downward flow channel is formed between the inner cylinder and the sieve holes and the outer cylinder; the external reaction zone is formed between the outer cylinder and the flow guiding device; and the particle conditioning zone is formed at the bottom of the outer reaction chamber. Simultaneously, the inner reaction chamber forms an inner reaction zone, and the through-hole of the flow guiding device forms a mixing reaction zone. During the reaction: the aeration device aerates upwards, forming an upward flow in the particle conditioning zone, mixing reaction zone, and inner reaction zone from bottom to top, and then forming a downward flow in the outer downward flow channel and outer reaction zone. The mixture can follow the airflow to form an upward flow in the inner reaction zone, mixing reaction zone, and particle conditioning zone. When it rises to the upper edge of the inner cylinder, the mixed liquid bypasses it and forms a downward flow through the outer downward flow channel. Next, a portion of the downward flow re-enters the mixing and inner reaction zones via a guide device located at the bottom. Specifically, some of the downward flow enters the inner reaction zone through the sieve holes on the guide device, while some (mainly large-diameter particles) bypasses the bottom edge of the guide device and enters the particle conditioning zone before continuing to rise and undergo internal circulation. Due to the differences in the size and position of the sieve holes and through holes, the separation of clear liquid, flocculent sludge and fine particles, and large particles and large granular materials is achieved. It can be seen that in different areas of the outer reaction chamber, clear liquid, flocculent sludge, small-diameter granular sludge, and large-diameter granular sludge create different circulation paths, thus forming a granular sludge distribution system in the vertical flow reactor, fundamentally different from the biofilm reaction system, achieving better wastewater treatment results.

[0061] More preferably, the propulsion device 4 includes: a propulsion mounting frame, a propulsion main shaft 43, a propulsion impeller 44, and a propulsion drive component 45; A flow-generating mounting bracket is installed at the sieve hole position; The main shaft for propulsion is located in the middle of the propulsion mounting frame; The impeller blades and the drive components are nested on the main shaft.

[0062] In this embodiment, the propulsion drive unit drives the propulsion main shaft to rotate, which in turn drives the blades nested on the propulsion main shaft to rotate. On the one hand, the propulsion impeller blades rotate continuously and push the flow upward, accelerating the upward flow velocity of the sewage. In the sewage granular sludge system, the particulate matter carried in the sewage fluid will rise rapidly along the direction of fluid movement, exhibiting turbulent flow. On the other hand, the propulsion impeller blades continuously collide with and impact the sewage, and the tiny bubbles carried in the particulate matter are separated under the action of turbulence and mutual collision. After degassing, the particulate matter can better collide or adsorb with dissolved substances in a turbulent mixed state. This can solve the problems of insufficient mixed liquor circulation power, low upward flow velocity of biological granular sludge, and difficulty in separating tiny bubbles carried by biological granular sludge in tower-type and vertical flow reactors, thereby increasing the propulsion velocity of the solution, shortening the circulation time of the liquid flow, and improving the sewage treatment rate.

[0063] More preferably, to avoid the propulsion mounting frame clogging the screen holes and affecting the lateral and upward fluid movement, the propulsion mounting frame is preferably in the form of a skeleton, including a propulsion base plate 41 and a propulsion support 42. One end of the propulsion support is connected to the outer edge of the propulsion base plate, and the other end is connected to the inner wall of the guide component. It is supported by the skeleton of the base plate and the support. For example, the propulsion support includes a horizontal bar and several vertical bars spaced apart; the horizontal bar has a ring structure and is sequentially fitted onto the vertical bars from top to bottom. The propulsion support forms a skeleton through the vertical bars and horizontal bars. More preferably, the propulsion base plate can be a bottom circular steel plate; the propulsion support can be formed by several diagonal bars, one end of which is connected to the outer edge of the propulsion base plate, and the other end is connected to the inner wall of the guide component. The bottom circular steel plate is welded to the side shell to form the main body of the propulsion device; then a propulsion main shaft is set in the middle, and propulsion impellers and propulsion drive components are nested above and below.

[0064] More preferably, the flow-pushing base plate and the flow-pushing support are integrally shaped like a trapezoidal frustum; the lower edge of the trapezoidal frustum is flush with the connection between the inner inclined guide section and the vertical guide section; the upper edge of the trapezoidal frustum is lower than the position of the sieve holes on the inner inclined guide section. For example, the diameter of the upper edge of the trapezoidal frustum can be selected as: 1m ≤ Φ 上 ≤10m; lower edge diameter, can be selected as 1 / 10Φ 上 ≤Φ 下 ≤1 / 5Φ 上 .

[0065] In this embodiment, a preferred embodiment of the propulsion base plate and propulsion support is provided. The circular base plate and trapezoidal frustum design allow the propulsion device to fit snugly against the inner surface of the inner inclined guide section. When combined with the aeration device, it generates a stronger negative pressure when pushing upwards. This internal circulation, through the screen holes, continuously draws in clear liquid, flocculent sludge, and fine-particle sludge, further improving the diversion and purification effect. Moreover, the bottom of the propulsion device is installed precisely at the connection between the inner inclined guide section and the vertical guide section, and the upper edge of the propulsion device does not exceed the screen hole position. In other words, the height of the propulsion device does not exceed the screen hole position. The upward propulsion generates negative pressure at the screen hole position but does not block the entry of particles, thus promoting internal circulation.

[0066] More preferably, the impeller blades can be trapezoidal blades with a longer upper section and a shorter lower section.

[0067] In this embodiment, the trapezoidal impeller blade design, with its longer upper section and shorter lower section, serves two purposes: firstly, it better adapts to the configuration of the inwardly inclined guide section; secondly, it increases the force-bearing area of ​​the upper part of the impeller blade, allowing the impeller blade to exert a greater force on the upper fluid when propelling it, thus enhancing the upward pushing ability of the fluid. The smaller force-bearing area of ​​the lower impeller blade effectively reduces resistance. The difference in size between the upper and lower parts of the trapezoidal impeller blade creates a natural flow guiding effect, causing the fluid to flow more concentratedly upward under the action of the impeller blade, reducing lateral diffusion and turbulence. For example, the blade inclination angle of the impeller blade is: 10 ≤ θ. 浆 ≤45 degrees.

[0068] More preferably, the impeller blades can be set at an upward tilt angle; specifically, this tilt angle can be equal to or slightly smaller than the tilt angle of the inclined surface of the inner inclined guide section. The upward tilt of the impeller blades propels the fluid along the inclined surface of the inner inclined guide section. Matching the tilt angle of the impeller blades with the tilt angle of the inner inclined guide section ensures that the mechanical direction of the propelled fluid is consistent with the guide path, reducing ineffective energy consumption and improving the overall operating efficiency of the device. More specifically, the threshold value for the tilt angle difference is set to 0°–15° to adapt to usage requirements.

[0069] More preferably, the impeller blades are provided with cutting edges on their sides and bottom edges. As the impeller blades rotate, these cutting edges cut and agitate the fluid carrying air bubbles, facilitating the separation of air bubbles from particulate matter. The separated particulate matter can then come into more thorough contact with the reactants.

[0070] More preferably, the central axis of the impeller blades is vertically perpendicular; The central axis of the aeration components and the propulsion device coincides with the central axis of the inner cylinder.

[0071] In this embodiment, the central axis of the impeller blades is vertically aligned to further improve the symmetry of the flow field distribution and enhance wastewater treatment efficiency. The central axes of the aeration components and the impeller device coincide with the central axis of the inner cylinder. This alignment maximizes the coverage of the through holes and the inner cylinder space by maximizing the effective range of the impeller device and the aeration components. Simultaneously, the alignment of the impeller device with the aeration components' central axes ensures that the upward flow generated by the impeller blades superimposes on the upward flow generated by the aeration components, preventing asymmetrical flow caused by axial misalignment. This creates stable upward and downward flow paths, further improving the device's guiding effect on wastewater flow.

[0072] More preferably, the flow-driving component can be a flow-driving motor. The rotational speed of the flow-driving motor can be selected as low speed, for example 0 to 60 rpm.

[0073] More preferably, the bottom end of the pusher plate and the inner inclined guide section can also be equipped with a seal and fastener to achieve a sealing and fixing effect, forming a bottom center closed, which can only form a side bottom water inlet and top water outlet under negative pressure; more preferably, the material can be fiberglass, stainless steel, engineering plastics, etc.

[0074] More specifically, the flow guiding device may be used, but is not limited to, the aforementioned vertical flow reactor. Optionally, a vertical flow reactor may be provided, such as a tower type or a cylindrical type, including an inner cylinder, an outer cylinder, and any of the aforementioned flow guiding devices. The flow guiding device is located in the lower middle part of the vertical flow reactor, above the bottom. Overall, its edge is aligned with the inner cylinder of the reactor and is centrally symmetrical.

[0075] In the embodiments, the application areas of the flow guiding device of the present invention are given. It is suitable for screening and controlling the movement path of coarse particles in the internal mixed liquor in vertical flow reactors, focusing on the differentiation of internal circulation paths in biological reaction systems, specifically such as biological carbon removal, nitrogen removal, and phosphorus removal in granular sludge reaction systems for wastewater treatment. This creates different reaction zones within the reaction system, corresponding to different dissolved oxygen conditions, granular sludge content, and types and abundances of functional bacteria. It guides the clear liquid and small particles through the sieve holes, while simultaneously intercepting large particles, causing them to move downwards along the lower outward-sloping guide section and enter the internal circulation through the through holes. This optimizes the movement trajectory of the liquid phase and the large particle phase in the separated mixed liquor, accelerates the internal circulation of the clear liquid portion of the mixed liquor, extends the movement path of large particles, and improves the overall reaction effect.

[0076] More preferably, to address the lack of control over the biological granular sludge recycling process and its particle size in tower or vertical flow reactors, a crushing and screening device is provided, comprising: a crushing shell 61, a slurry blade 62, a crushing drive assembly, and a screen 63. The crushing frame is closed on the sides and open from top to bottom; and an internal screen is installed with mesh openings on the screen. The blade and crushing drive assembly are rotatably nested under the crushing shell.

[0077] More preferably, the screen can be set at any one or more positions at the bottom, top, or middle of the crushing shell; when the screen is set at multiple positions, a multi-stage screen is formed; the mesh size of the multi-stage screen decreases from bottom to top; so as to filter the particles layer by layer. The crushing drive assembly includes: a crushing drive component 64 and a crushing spindle 65; The crushing drive unit is located at the bottom end of the crushing shell; The crushing spindle is connected to the crushing drive unit and extends downwards; The blades are mounted at an angle on the crushing shaft.

[0078] In this embodiment, the inner and outer inclined guide sections divide the entire flow space into inner and outer regions. The bottom space is also divided into inner and outer regions by the crushing frame. The outer region is mainly composed of large-diameter sludge particles, while the inner region contains water carrying large sludge particles. Specifically, the frame is side-closed and vertically open, with a screen at the bottom and a connection to the through holes at the top. The density of the large sludge particles is slightly greater than that of water, and they flow downwards along the closed sides, reaching the bottom of the crushing frame. Granular sludge particles smaller than the screen mesh size pass through the screen with the upward flow and continue to move upward; granular sludge particles larger than the screen mesh size are intercepted by the screen. Simultaneously, under the rotation of the slurry blade, these larger particles are sheared into granular sludge of suitable size. The less dense portion can penetrate the screen and move upward, while the denser portion (mainly inorganic particles or inorganic agglomerates within the particles) sinks downward. On one hand, the rotational shearing of the slurry blade and the density difference separate inorganic particles and inorganic agglomerates; on the other hand, the screen mesh filters out sludge particles of suitable size to control the diameter of the sludge particles, thereby adjusting the throughput rate of the granular sludge. More preferably, the bottom of the outer cylinder 1 is provided with a sludge discharge port 9, through which the denser portion (mainly inorganic particles or inorganic agglomerates within the particles) is discharged, preventing the denser portion from accumulating at the bottom of the outer cylinder. The crushing and screening device crushes large-diameter sludge particles, preventing them from aging. While discharging inorganic components, it retains organic components that enter the through-holes, i.e., the mixing and reaction zone, allowing the sludge particles to self-renew. More preferably, the mesh is round with a diameter of 3mm ≤ Φ ≤ 10mm, or square with dimensions of 4×4mm ≤ side length ≤ 8×8mm, to meet the screening and separation requirements for sludge particles of a preset size. Even more preferably, the distance between the blade and the screen is 2–5mm. This prevents direct contact between the blade and the screen, reducing damage and wear caused by collisions, and, combined with the screen's mesh size, improves the shearing and crushing efficiency and screening accuracy for large-diameter sludge particles. Optionally, the blade rotation can be driven by a motor or by the liquid flow in the wastewater treatment process. In this embodiment, the slurry cutter cuts large sludge particles through the drive of the crushing drive and the transmission of the crushing main shaft. Because the slurry cutter is installed at an angle below the main shaft, during the rotational cutting process, one side of the slurry cutter applies an upward lifting force to the sludge particles, while the other side forms a negative pressure area, generating an adsorption effect. The liquid flow direction is guided, forming an orderly vortex that carries the sludge particles through the mesh of the screen, further optimizing the crushing and separation efficiency. Operators can adjust the shearing and crushing efficiency by adjusting the inclination angle of the slurry cutter or the rotation speed of the crushing drive. More specifically, the crushing drive is a motor with a rotation speed of 100–1000 rpm, and the inclination angle of the slurry cutter is 5° ≤ θ ≤ 30°. Those skilled in the art can adjust the motor speed and the slurry cutter inclination angle according to the processing requirements of different sludge characteristics to improve the applicability of the device.More preferably, the blade is wider at the top and narrower at the bottom, with a guide channel on the inner side and the cutting edge positioned on the upper and outer sides. Due to the blade's top-to-bottom width, the flow-pushing device reduces the resistance encountered by the blade during rotation, resulting in smoother shearing action. The cutting edge positioning on the upper and outer sides provides multi-angle cutting paths, enabling comprehensive shearing of sludge particles during rotation. The guide channel directs the liquid flow, preventing sludge particles from accumulating or clogging inside the blade, and guiding the liquid flow to carry unbroken sludge particles into the shearing zone, reducing sludge retention time and significantly improving the crushing efficiency for large sludge particles. More preferably, the blade is made of a rust-resistant material, such as stainless steel, to prevent oxidation and rust, extending the service life of the device.

[0079] More preferably, the crushing shell is a hollow truncated cone that gradually narrows from top to bottom, and the screen is set at the bottom of the hollow truncated cone.

[0080] In this embodiment, the crushing shell is a hollow frustum that tapers from top to bottom, has a trapezoidal shape in side view, is sealed and waterproof on the sides, and is tilted at a certain angle. It is understood that those skilled in the art can adjust the size of the channel through which the granular sludge moves downward by setting the side tilt angle of the crushing shell, thereby controlling the downward movement speed and the amount of large granular sludge passing through.

[0081] More preferably, the bottom of the outer cylinder is set as a hollow frustum shape that tapers from top to bottom, and the side of the crushing shell frame has the same inclination angle as the side of the bottom of the outer cylinder.

[0082] In this embodiment, the bottom of the outer cylinder maintains the same inclination angle as the crushing frame, forming an inclined and continuous preset flow path. This reduces the jamming and accumulation of granular sludge in narrow areas due to inconsistent inclination angles during granular sludge movement. Furthermore, the sludge particles move along the inclined preset flow path, forming an inclined guiding structure that helps guide large sludge particles to slide downwards along the sidewall, improving the separation efficiency of large sludge particles. For example, the bottom of the outer cylinder maintains the same inclination angle as the crushing frame, and the distance between the bottom of the cylinder and the crushing frame is 5mm to 10mm. This reasonable distance allows large sludge particles to be precisely guided to the screen area and sheared by the slurry blades; small particles can be screened under the combined action of the gap and the screen, improving grading accuracy and efficiency.

[0083] In summary, a preferred embodiment of the nitrogen and phosphorus removal module in the perchlorate organic wastewater treatment device of the present invention has been provided, but it is not limited to the above preferred embodiment. The key of the present invention is to provide a fixed-point planning device for the specific situation of perchlorate organic wastewater, so as to ensure that the influent of the nitrogen and phosphorus removal module meets the influent requirements, so as to efficiently remove nitrogen and phosphorus under perchlorate conditions, form a stable granular sludge system, and achieve the stability of the nitrogen and phosphorus removal process.

[0084] On the other hand, the present invention also provides a perchlorate organic wastewater treatment process, employing any of the above-mentioned perchlorate organic wastewater treatment devices, comprising: S1: Provides an anaerobic environment and a redox environment with a reduction potential below -200mV to degrade large organic molecules in organic wastewater into small organic molecules, resulting in converted effluent; S2: For effluent with organic matter content exceeding a preset threshold, first provide an aerobic environment with dissolved oxygen concentration of 0.5–2.0 mg / L to reduce the organic matter content to a preset range, then provide a nutrient-limited environment with dissolved oxygen concentration of 0.2–0.5 mg / L to ensure the ammonia nitrogen to organic matter ratio is within a preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module; for effluent with organic matter content below the preset threshold, introduce it into the external circulation of the nitrogen and phosphorus removal module. S3: After undergoing denitrification and phosphorus removal reaction in the denitrification and phosphorus removal module, solid-liquid separation is completed and the product is discharged.

[0085] In a preferred embodiment of the perchlorate organic wastewater treatment device, the perchlorate organic wastewater can be first introduced into an ultrasonic-enhanced pretreatment module to remove impurities, suspended solids, and heavy metals by adding chemical conditioning; and then transferred to subsequent modules.

[0086] This embodiment presents a perchlorate organic wastewater treatment process that achieves efficient treatment and stable water quality compliance. First, an ultrasonic-enhanced pretreatment module removes some suspended solids and removable phosphorus by adding a phosphorus removal agent, reducing the load on subsequent units. Second, the wastewater enters a biological reduction module, where organic matter is effectively degraded under dissolved oxygen concentrations below 0.2 mg / L. Then, through an oxygen-controlled conversion module, suitable influent conditions are provided for subsequent nitrogen and phosphorus removal modules via two pathways, achieving deep removal of ammonia nitrogen, total nitrogen, and phosphorus, ensuring stable effluent quality. Finally, a sedimentation unit performs solid-liquid separation on the treated wastewater to further remove suspended solids, ensuring the final effluent meets discharge standards. This process not only efficiently removes organic matter, nitrogen, and phosphorus but also stably regulates the ammonia nitrogen ratio, improving the coupling efficiency between functional units, achieving efficient wastewater treatment, reduced energy consumption, and stable operation.

[0087] The above-described perchlorate organic wastewater treatment process is based on the above-described perchlorate organic wastewater treatment device. The combination of its technical effects and features will not be elaborated further here. The embodiments described above are merely illustrative of several implementation methods of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the invention patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these all fall within the protection scope of the present invention.

Claims

1. A perchlorate organic wastewater treatment device, characterized in that, include: The biological reduction module, oxygen control and conversion module, nitrogen and phosphorus removal module, and sedimentation effluent module are connected in sequence. The biological reduction module provides an anaerobic and redox environment to degrade large organic molecules in organic wastewater into smaller organic molecules and convert perchlorate into reduction products, resulting in biologically reduced effluent. The oxygen control conversion module is used to first provide an aerobic environment to reduce the organic matter content of biologically reduced effluent with an organic matter content higher than a preset threshold, and then provide an oxygen-limited environment to ensure that the ratio of ammonia nitrogen to organic matter is within a preset range before introducing it into the internal circulation of the denitrification and phosphorus removal module. The biologically reduced effluent with organic matter content below a preset threshold is introduced into the external circulation of the nitrogen and phosphorus removal module. The oxygen control conversion module includes: an aerobic unit, one end of which is connected to the first outlet of the biological reduction module and the other end of which is connected to the oxygen-limiting unit; an oxygen-limiting unit, which is located below the nitrogen and phosphorus removal module and is connected to the bottom of the nitrogen and phosphorus removal module, and an aeration unit is also provided in the oxygen-limiting unit; and a bypass pipe, one end of which is connected to the second outlet of the biological reduction module and the other end of which is connected to the outer reaction zone of the nitrogen and phosphorus removal module. After undergoing denitrification and phosphorus removal in the denitrification and phosphorus removal module, the solution is introduced into the sedimentation effluent module, where solid-liquid separation is completed before being discharged. The biological reduction module includes: a first inlet, a three-phase separation unit, a functional packing area, a first outlet, and a second outlet; the first inlet and the three-phase separation unit are arranged side by side at the upper end of the biological reduction module; the functional packing area is located below the three-phase separation unit; the first outlet is located above the three-phase separation unit to discharge biologically reduced effluent with an organic matter content higher than a preset threshold; the second outlet is located below the functional packing area to discharge biologically reduced effluent with an organic matter content lower than a preset threshold.

2. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, The biological reduction module also includes: a gas production outlet, a first aeration port, and a first sludge discharge port; The three-phase separation unit uses a three-phase separator. One end of the gas outlet is connected to the gas port of the three-phase separator, and the other end is connected to the first aeration port, which is located below the functional packing area. The first row of mud inlets is located at the bottom of the bioreduction module.

3. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, The aerobic unit includes: The second water inlet, located at the top, is lower than the first water outlet of the biological reduction module and receives the overflow from the first water outlet. The biological packing area in the middle is equipped with biological packing material, on which functional microorganisms are attached; The third outlet, located slightly below, is connected to the oxygen-limiting unit; The aerobic aeration components are located at the bottom; and the second sludge outlet is located at the bottom.

4. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, The sedimentation effluent module includes: an inclined tube sedimentation unit located in the middle, a fourth effluent outlet located above the inclined tube sedimentation assembly, and a third sludge discharge outlet located at the bottom.

5. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, It also includes the first control module, which includes: Dissolved oxygen concentration detectors installed in each module are used to control the anaerobic environment (dissolved oxygen concentration below 0.2 mg / L), the redox environment (reduction potential below -200mV), the aerobic environment (dissolved oxygen concentration between 0.5 and 2.0 mg / L), and the oxygen-limiting environment (dissolved oxygen concentration between 0.2 and 0.5 mg / L). A pH meter is installed in the denitrification and phosphorus removal module to control the pH value of the denitrification and phosphorus removal environment to 6.5-8.

0.

6. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, Also includes: An ultrasonic enhanced pretreatment module is installed at the front end of the biological reduction module; including: inlet pipe, ultrasonic generator, CMC modified nZVI dosing point, ultrasonic enhanced pretreatment module outlet and ultrasonic enhanced pretreatment unit sludge discharge port. The inlet pipe is used to introduce perchlorate organic wastewater; An ultrasonic generator is located inside the ultrasonic enhancement pretreatment module; The CMC-modified nZVI dosing point is located above the ultrasonic generator and is used to add chemical conditioning agents. The outlet of the ultrasonic enhanced pretreatment module is connected to the biological reduction module; it is used to introduce the pretreated wastewater into the biological reduction module. The sludge discharge port of the ultrasonic enhanced pretreatment unit is located at the bottom of the ultrasonic enhanced pretreatment module and is used to separate suspended solids and colloidal organic matter.

7. The perchlorate organic wastewater treatment device according to claim 1, characterized in that, The ultrasonic enhanced pretreatment module also includes a second control module, which monitors the oxidation-reduction potential of the ultrasonic enhanced pretreatment module. When the oxidation-reduction potential is higher than the set threshold, the residence time of the wastewater in the ultrasonic enhanced pretreatment module is extended and the dosage of chemical conditioning agent is increased. When the oxidation-reduction potential is lower than the set threshold, the wastewater is introduced into the biological reduction module.

8. The perchlorate organic wastewater treatment apparatus according to any one of claims 1 to 7, characterized in that, The nitrogen and phosphorus removal module includes: an outer cylinder, an inner cylinder, a flow guiding device, a flow propulsion device, an aeration device, and a crushing and screening device; The inner cylinder is connected to the outer cylinder, separating the inner reaction chamber located inside the inner cylinder and the outer reaction chamber located between the inner cylinder and the outer cylinder; A flow guiding device, connected to the axial bottom end of the inner cylinder, includes a flow guiding component; a sieve hole provided on the upper side wall of the flow guiding component; and a through hole provided in the flow guiding component; the size of the sieve hole is smaller than the size of the through hole. A flow propulsion device is installed at the sieve opening; The aeration device is installed inside the through hole and located below the flow propulsion device; The crushing and screening device is located below the flow guiding device; The sludge discharge port is located below the crushing and screening device.

9. The perchlorate organic wastewater treatment device according to claim 8, characterized in that, The crushing and screening device includes: a crushing shell, a blade, a crushing drive assembly, and a screen; the crushing shell is closed on the side and open from top to bottom, and has a screen inside; the screen has mesh openings; the blade and the crushing drive assembly are rotatably nested under the crushing shell.

10. A process for treating perchlorate organic wastewater, characterized in that, The perchlorate organic wastewater treatment apparatus according to any one of claims 1 to 9, wherein the process includes: Introducing perchlorate organic wastewater provides an anaerobic and redox environment, degrading large organic molecules in the wastewater into smaller organic molecules, and converting perchlorate into reduction products to obtain biologically reduced effluent; For biologically reduced effluent with organic matter content exceeding a preset threshold, an aerobic environment is first provided to reduce the organic matter content to a preset range, and then an oxygen-limited environment is provided to ensure that the ratio of ammonia nitrogen to organic matter is within a preset range before introducing it into the internal circulation of the nitrogen and phosphorus removal module; for biologically reduced effluent with organic matter content below a preset threshold, it is introduced into the external circulation of the nitrogen and phosphorus removal module. After undergoing denitrification and phosphorus removal reactions in the denitrification and phosphorus removal module, the solid-liquid separation is completed before discharge.

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