Water quality purification system and method for ecological wetland

Abstract

The invention provides a water quality purification system and method for an ecological wetland, and relates to the technical field of ecological wetlands, and the water quality purification system comprises a pretreatment module which is used for preliminarily filtering and separating large-particle suspended matters, floating matters and part of organic matters flowing into a water body; through the arrangement of the multi-stage biological purification module, a water body is sequentially introduced into the multi-stage treatment unit comprising the pretreatment module, the multi-stage biological purification module, the multiple oxidation module and the ecological restoration module, staged efficient removal of nitrogen, phosphorus, heavy metals and organic pollutants is realized, and especially in the multi-stage biological purification module, the treatment efficiency is improved. Through the synergistic effect of the artificial floating bed filter tank, the gravel matrix filter tank and the plant-microorganism symbiotic filter tank, the decomposition, adsorption and removal capacities of pollutants are greatly improved, meanwhile, the water body retention time and flow state distribution are optimized, the short flow phenomenon is effectively avoided, and the adaptability and treatment efficiency of the system under the complex polluted water body condition are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of ecological wetlands, and specifically, to a water purification system and method for ecological wetlands. Background Art

[0002] Wetland parks are social welfare ecological parks with multiple functions such as wetland protection and utilization, science popularization education, wetland research, ecological sightseeing, and leisure and entertainment. Wetland parks play an important role in protecting biodiversity, maintaining fresh water resources, regulating climate, degrading pollutants, providing production and living resources for humans, and developing urban tourism. The technology of ecological water purification started earlier abroad and is relatively mature. The United States Environmental Protection Agency is currently vigorously developing ecological water treatment databases in North America and local databases to reduce duplicate labor and improve traditional design methods. North American Wetland Engineering Company has developed a circulating flow wetland process and a ventilation enhanced bed process, and has successfully applied them to areas that were considered unsuitable for ecological technology to treat sewage several years ago, that is, areas with too cold climate or too high sewage concentration.

[0003] In the prior art, when treating complex polluted water bodies such as those containing high concentrations of nitrogen, phosphorus, and organic pollutants, problems such as low purification efficiency and incomplete removal of some pollutants will be encountered. For example, the treatment effects of heavy metals and refractory organic compounds are poor. At the same time, uneven hydraulic distribution leads to short-circuit phenomena, further reducing the overall purification effect.

[0004] Therefore, we make improvements on this and propose a water purification system and method for ecological wetlands. Summary of the Invention

[0005] The purpose of the present invention is to provide a water purification system and method for ecological wetlands, which solves the problems in the prior art that when treating complex polluted water bodies such as those containing high concentrations of nitrogen, phosphorus, and organic pollutants, problems such as low purification efficiency and incomplete removal of some pollutants will be encountered. For example, the treatment effects of heavy metals and refractory organic compounds are poor. At the same time, uneven hydraulic distribution leads to short-circuit phenomena, further reducing the overall purification effect.

[0006] Specifically, this application is as follows: It includes a pretreatment module for preliminarily filtering and separating large particulate suspensions, floating substances, and some organic matters in the inflowing water body. This module includes a grille chamber and a sedimentation tank, and an adjustable flow rate device is set to adapt to different flow rate requirements; A multi-stage biological purification module, including a variety of biological filters. The filters are, in sequence, an artificial floating bed filter, a gravel matrix filter, and a plant-microorganism symbiotic filter. Through the synergistic action of plants, microorganisms, and the matrix, nitrogen, phosphorus, heavy metals, and organic pollutants are efficiently removed; The multi-oxidation module enhances the degradation of organic matter and the conversion of nitrogen and phosphorus in water by constructing an alternating distribution of wetland oxidation zones and anaerobic zones, and is provided with various forms of aeration devices, including microbubble aeration devices and solar-driven aeration systems; The ecological restoration module forms a stable ecological chain by introducing local pollution-tolerant aquatic plants and fish communities in the wetland, further promoting the removal of pollutants and the self-restoration of the wetland ecosystem; The hydraulic regulation module is used to regulate the flow pattern of the wetland water, including meandering water flow design and hydraulic buffer zones, and realizes uniform water distribution through natural terrain simulation; The control module is used to coordinate and regulate the operating states of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the operating mode of the filter tank, and performing regular maintenance on plant pruning..

[0007] As a preferred technical solution of the present application, the multi-stage biological purification module includes: The artificial floating bed unit is used to adsorb and enrich suspended solids, organic pollutants, and some nitrogen and phosphorus pollutants in the water through the roots of aquatic plants, and at the same time provides a matrix environment for the attachment and growth of microorganisms, enhancing the biological degradation effect; The gravel matrix unit is used to provide a habitat environment for the attachment and reproduction of microorganisms in the water through a porous medium structure, realize the further decomposition of organic pollutants, and remove particulate pollutants through physical filtration; The plant-microorganism symbiotic unit is used to promote the growth of microorganisms by using plant root exudates, complete the in-depth treatment of refractory organic pollutants and heavy metals through the absorption of nitrogen and phosphorus pollutants by plants and the synergistic effect of microorganisms.

[0008] As a preferred technical solution of the present application, the anaerobic zone in the multi-oxidation module is constructed using natural soil and specific types of anaerobic agents are added.

[0009] As a preferred technical solution of the present application, the ecological restoration module introduces local endemic aquatic plant and animal species.

[0010] As a preferred technical solution of the present application, the meandering water flow design in the hydraulic regulation module is optimized in combination with the natural wetland terrain, and the water flow path can be adjusted through dynamic simulation.

[0011] As a preferred technical solution of the present application, the control module is used to coordinate and regulate the operating states of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the operating mode of the filter tank, and performing regular maintenance on plant pruning.

[0012] The present invention also provides a water purification method for an ecological wetland, including the following steps: S1: Introduce the water body flowing into the wetland into the pretreatment module. Remove large particulate suspended matter and floating objects through the grille tank. Then separate part of the organic matter and sediment through the sedimentation tank, and optimize the treatment efficiency through the adjustable flow rate device according to the change of water flow. S2: The water body flows through the artificial floating bed filter, gravel matrix filter and plant-microbial symbiotic filter in sequence; in the artificial floating bed filter, part of the nitrogen and phosphorus pollutants are adsorbed and degraded through the plant roots; in the gravel matrix filter, the organic matter is decomposed by the microbial community; finally, the remaining pollutants are co-purified in the plant-microbial symbiotic filter. S3: The water body enters the alternating area of the wetland oxidation zone and anaerobic zone. In the oxidation zone, the dissolved oxygen content is increased through the microbubble aeration device and the solar-driven oxygenation system to strengthen the decomposition of organic matter; in the anaerobic zone, heavy metal reduction and phosphorus precipitation are achieved through the action of specific anaerobic agents. S4: Introduce local aquatic plants and fish communities into the wetland. Build a complete ecological chain through plant absorption, microbial decomposition and animal activities. At the same time, use salt-tolerant plants to adapt to extreme environments, and further improve the purification ability and self-repair function of the wetland. S5: Dynamically adjust the flow pattern of the wetland water flow according to the water quality monitoring results. Achieve uniform water flow distribution through the meandering water flow design and hydraulic buffer zone to avoid short-circuit flow phenomenon; optimize the water flow path through natural terrain simulation and dynamic simulation to enhance the pollutant removal ability of the wetland. S6: Collect real-time monitoring data including COD, total nitrogen, total phosphorus and dissolved oxygen concentration through the control module. Adjust the operation parameters of each treatment module according to the monitoring results, including aeration intensity, filter operation mode and plant pruning cycle, so as to ensure the coordinated work of each module and achieve the stable operation and efficient purification of the system. S7: The purified water body is tested for water quality through the monitoring module. If the monitoring results meet the standards, it is discharged into the natural water body; if not, the operation parameters of each treatment module are adjusted according to the optimization suggestions of the intelligent control module, and the purification process is re-optimized.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: In the solution of the present application: 1. Through the setting of multi-stage biological purification modules, the phased and efficient removal of nitrogen, phosphorus, heavy metals and organic pollutants is realized by introducing the water body into multi-stage treatment units in sequence, including the pretreatment module, multi-stage biological purification module, multiple oxidation module and ecological restoration module. Especially in the multi-stage biological purification module, through the synergistic effect of the artificial floating bed filter, gravel matrix filter and plant-microbial symbiotic filter, the decomposition, adsorption and removal ability of pollutants is greatly improved. At the same time, the water body residence time and flow pattern distribution are optimized, effectively avoiding the short-circuit flow phenomenon, and improving the adaptability and treatment efficiency of the system under complex polluted water body conditions.

[0014] 2. Through the settings of the control module and the ecological restoration module, the long-term stability and sustainability of the system operation are ensured. The control module dynamically adjusts the aeration intensity, water flow velocity, and plant pruning cycle by real-time monitoring of water quality data to ensure the efficient collaborative work of each treatment module. The ecological restoration module constructs an ecological chain of native plants, microorganisms, and fish, which not only improves the purification ability of the wetland but also enhances the self-repair function of the wetland and its ability to resist extreme environments, thus achieving the dual goals of pollution control and ecological protection; BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of a water purification system and its method for an ecological wetland provided by this application; Figure 2 It is a schematic diagram of the overall process of a water purification system and its method for an ecological wetland provided by this application; Figure 3 It is a schematic diagram of the process of a multi-stage biological purification module of a water purification system and its method for an ecological wetland provided by this application; Figure 4 It is a schematic diagram of the module process of a water purification system and its method for an ecological wetland provided by this application; Labels in the figure: 1. Pretreatment module; 2. Multi-stage biological purification module; 3. Multiple oxidation module; 4. Ecological restoration module; 5. Hydraulic regulation module; 6. Control module. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Apparently, the described embodiments are some, but not all, of the embodiments of the present invention.

[0017] Therefore, the following detailed description of the embodiments of the present invention is not intended to limit the scope of the claimed present invention, but merely represents some embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0018] It should be noted that, without conflict, the embodiments in the present invention and the features and technical solutions in the embodiments can be combined with each other.

[0019] It should be noted that similar reference numerals and letters denote similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0020] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by terms such as "upper" and "lower" is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the invention product is customarily placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. Such terms are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be construed as indicating or implying relative importance.

[0021] Please refer to Figures 1 to 4 , the present invention provides a technical solution: a water quality purification system and method for an ecological wetland, including: A pretreatment module for preliminarily filtering and separating large particulate suspensions, floating substances and part of organic matters in the inflowing water body. This module includes a grille tank and a sedimentation tank, and an adjustable flow rate device is set to adapt to different flow rate requirements; A multi-stage biological purification module, including a variety of biological filters. The filters are, in sequence, an artificial floating bed filter, a gravel matrix filter and a plant-microorganism symbiotic filter. Through the synergistic action of plants, microorganisms and the matrix, nitrogen, phosphorus, heavy metals and organic pollutants are efficiently removed; A multiple oxidation module, by constructing an alternating distribution of wetland oxidation zones and anaerobic zones, enhancing the ability of organic matter degradation and nitrogen and phosphorus transformation in the water body, and setting various forms of aeration devices, including a microbubble aeration device and a solar-driven aeration system; An ecological restoration module, by introducing local pollution-tolerant aquatic plants and fish communities in the wetland to form a stable ecological chain, further promoting the removal of pollutants and the self-repair of wetland ecology; A hydraulic regulation module for regulating the flow pattern of the wetland water, including a meandering water flow design and a hydraulic buffer zone, and realizing uniform water flow distribution through natural terrain simulation; A control module for coordinating and regulating the operating states of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the operating mode of the filter, and performing regular maintenance and plant pruning.

[0022] As Figure 1 , Figure 2 , Figure 3 and Figure 4 shown, as a preferred embodiment, on the basis of the above method, further, the multi-stage biological purification module includes: An artificial floating bed unit is used to adsorb and enrich suspended solids, organic pollutants, and some nitrogen and phosphorus pollutants in water bodies through the roots of aquatic plants. At the same time, it provides an attachment and growth matrix environment for microorganisms, enhancing the biodegradation effect. A gravel matrix unit is used to provide a habitat environment for the attachment and reproduction of microorganisms in water bodies through a porous medium structure, realizing the further decomposition of organic pollutants, and removing particulate pollutants through physical filtration. A plant-microorganism symbiotic unit is used to promote the growth of microorganisms by using plant root exudates. Through the absorption of nitrogen and phosphorus pollutants by plants and the synergistic effect of microorganisms, the deep treatment of refractory organic pollutants and heavy metals is completed. The multi-stage biological purification module realizes water purification through the synergistic effect of the artificial floating bed unit, the gravel matrix unit, and the plant-microorganism symbiotic unit: The artificial floating bed unit uses the roots of aquatic plants to adsorb suspended solids and some nitrogen and phosphorus pollutants, and at the same time provides an attachment environment for microorganisms; the gravel matrix unit filters particulate pollutants physically, and the attached microorganisms further decompose organic matter; in the plant-microorganism symbiotic unit, plant roots absorb nitrogen and phosphorus pollutants, and microorganisms cooperate to treat refractory organic matter and heavy metals. By optimizing the hydraulic retention time and medium configuration, this module significantly improves the pollutant removal efficiency and purification stability.

[0023] To verify the treatment effect and adaptability of the multi-stage biological purification module under different pollutant concentration conditions, the following experimental schemes and examples were designed: The above experimental data show that the multi-stage biological purification module shows high treatment effects under different pollutant concentration conditions (low, medium, and high concentrations). By optimizing parameters such as the types of artificial floating bed plants, the particle size of the gravel matrix, the hydraulic retention time, and the types of microorganisms, the removal rates of COD, total nitrogen, and total phosphorus can reach 85%-92%, 70%-78%, and 80%-88% respectively. The experimental results verify the adaptability and high efficiency of this module to different water quality conditions, and at the same time demonstrate the significant advantages of modular design in improving the operation stability and purification efficiency of the system.

[0024] Such as Figure 1 、 Figure 2 、 Figure 3 and Figure 4 As shown, as a preferred implementation method, on the basis of the above method, further, the anaerobic zone in the multiple oxidation module is constructed using natural soil, and by adding specific types of anaerobic bacteria agents, the anaerobic zone of the multiple oxidation module is constructed using natural soil, and organic pollutants are degraded by adding anaerobic bacteria agents, while heavy metals are reduced and phosphorus is precipitated, realizing deep treatment and improving the purification efficiency.

[0025] Such as Figure 3 and Figure 4As shown, as a preferred embodiment, on the basis of the above method, further, the ecological restoration module introduces locally unique aquatic plant and animal species. The meandering water flow design in the hydraulic regulation module is optimized in combination with the natural wetland terrain, and the water flow path can be adjusted through dynamic simulation. The control module is used to coordinate and regulate the operating states of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the operating mode of the filter tank, and performing regular maintenance on plant pruning. The ecological restoration module constructs a stable ecological chain by introducing locally unique aquatic plants and animals, enhancing the self-repair ability of the wetland; the hydraulic regulation module utilizes the meandering water flow design in combination with the wetland terrain to optimize the water flow path, ensuring uniform water flow distribution; the control module coordinates the operation of each module, and through adjusting aeration, water flow rate, filter tank mode, and plant pruning, ensures the efficient and stable operation of the system.

[0026] Please refer to Figures 1 to 4 , the present invention also provides a water purification method for an ecological wetland, including the following steps: S1: Introduce the water body flowing into the wetland into the pretreatment module, remove large particulate suspended matter and floating objects through the grille tank, then separate part of the organic matter and sediment through the sedimentation tank, and optimize the treatment efficiency through the adjustable flow rate device according to the change in water flow rate; S2: The water body flows through the artificial floating bed filter tank, the gravel matrix filter tank, and the plant-microorganism symbiotic filter tank in sequence; in the artificial floating bed filter tank, part of the nitrogen and phosphorus pollutants are adsorbed and degraded through the plant roots; in the gravel matrix filter tank, the organic matter is decomposed by the microbial community; finally, the remaining pollutants are co-purified in the plant-microorganism symbiotic filter tank; S3: The water body enters the alternating area of the wetland oxidation zone and anaerobic zone. In the oxidation zone, the dissolved oxygen content is increased through the microbubble aeration device and the solar-driven oxygenation system to strengthen the decomposition of organic matter; in the anaerobic zone, heavy metal reduction and phosphorus precipitation are achieved through the action of specific anaerobic agents; S4: Introduce local aquatic plants and fish communities into the wetland, construct a complete ecological chain through plant absorption, microbial decomposition, and animal activities, and at the same time utilize salt-tolerant plants to adapt to extreme environments, further enhancing the purification ability and self-repair function of the wetland; S5: Dynamically adjust the wetland water flow regime according to the water quality monitoring results, achieve uniform water flow distribution through the meandering water flow design and the hydraulic buffer zone, and avoid short-circuit flow phenomena; optimize the water flow path through natural terrain simulation and dynamic simulation, enhancing the pollutant removal ability of the wetland; S6: Collect real-time monitoring data including COD, total nitrogen, total phosphorus, and dissolved oxygen concentration through the control module, and adjust the operating parameters of each treatment module according to the monitoring results, including aeration intensity, filter tank operating mode, and plant pruning cycle, so as to ensure the coordinated work of each module and achieve the stable operation and efficient purification of the system; S7: The purified water body is subjected to water quality detection through the monitoring module. If the monitoring result meets the standard, it is discharged into the natural water body; if not, the operating parameters of each treatment module are adjusted according to the optimization suggestions of the intelligent control module to re-optimize the purification process.

[0027] Working principle: By sequentially introducing the water body into multiple treatment units including a pretreatment module, a multi-stage biological purification module, a multiple oxidation module, and an ecological restoration module, the staged and efficient removal of nitrogen, phosphorus, heavy metals, and organic pollutants is achieved. Especially in the multi-stage biological purification module, through the synergistic effect of an artificial floating bed filter, a gravel matrix filter, and a plant-microbial symbiotic filter, the control module dynamically adjusts the aeration intensity, water flow rate, and plant pruning cycle by real-time monitoring of water quality data to ensure the efficient and coordinated operation of each treatment module. The ecological restoration module completes the purification process of the water quality through the construction of an ecological chain of native plants, microorganisms, and fish.

[0028] The above embodiments are only used to illustrate the present invention and do not limit the technical solutions described in the present invention. Although this specification has described the present invention in detail with reference to the above respective embodiments, the present invention is not limited to the above specific implementation manners. Therefore, any modification or equivalent replacement of the present invention; and all technical solutions and their improvements that do not deviate from the spirit and scope of the invention are covered by the scope of the claims of the present invention.

Claims

1. A water purification system for ecological wetlands, characterized in that: include: The pretreatment module is used to preliminarily filter and separate large suspended particles, floating matter and some organic matter in the inflowing water. The module includes a grid tank and a sedimentation tank, and is equipped with an adjustable flow rate device to meet different flow requirements; The multi-stage biological purification module includes a variety of biological filters, which are artificial floating bed filters, gravel matrix filters and plant-microorganism symbiotic filters in order. Through the synergistic effect of plants, microorganisms and matrices, nitrogen, phosphorus, heavy metals and organic pollutants are efficiently removed; Multiple oxidation modules, by constructing wetland oxidation zones and anaerobic zones in alternating distribution, enhance the degradation of organic matter and nitrogen and phosphorus conversion capacity in the water body, and set up various forms of oxygenation devices, including micro-bubble aeration devices and solar-driven oxygenation systems; The ecological restoration module, by introducing local pollution-tolerant aquatic plants and fish communities into the wetlands, forms a stable ecological chain, further promoting the removal of pollutants and the self-repair of the wetland ecology; The hydraulic control module is used to adjust the flow pattern of wetland water, including meandering water flow design and hydraulic buffer zone, and realizes uniform distribution of water flow through natural terrain simulation; The control module is used to coordinate and adjust the operating status of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the filter operation mode, and regularly maintaining plant pruning.

2. A water purification system for ecological wetlands according to claim 1, characterized in that: The multi-stage biological purification module comprises: Artificial floating bed unit, used to absorb and enrich suspended solids, organic pollutants and some nitrogen and phosphorus pollutants in water through the roots of aquatic plants, while providing a matrix environment for microorganisms to attach and grow, thereby enhancing the biodegradation effect; Gravel matrix unit, used to provide a habitat for the attachment and reproduction of microorganisms in the water body through a porous media structure, to achieve further decomposition of organic pollutants, and to remove particulate pollutants through physical filtration; The plant-microorganism symbiotic unit is used to utilize plant root secretions to promote the growth of microorganisms, and to achieve deep treatment of difficult-to-degrade organic pollutants and heavy metals through the absorption of nitrogen and phosphorus pollutants by plants and the synergistic effect of microorganisms.

3. A water purification system for ecological wetlands according to claim 1, characterized in that: The anaerobic zone in the multiple oxidation module is constructed by using natural soil and adding a specific type of anaerobic bacteria agent.

4. A water purification system for ecological wetlands according to claim 1, characterized in that: The ecological restoration module introduces local endemic aquatic plant and animal species.

5. The water purification system for ecological wetlands according to claim 1, characterized in that: The meandering water flow design in the hydraulic control module is optimized in combination with the natural wetland topography, and the water flow path can be adjusted through dynamic simulation.

6. The water purification system for ecological wetlands according to claim 1, characterized in that: The control module is used to coordinate and adjust the operating status of each module, including controlling the operation of the aeration device, adjusting the water flow rate, switching the filter operation mode, and regularly maintaining plant pruning.

7. A water purification method for ecological wetlands, characterized in that: The water purification is performed using the system described in any one of claims 1 to 6, comprising the following steps: S1: The water flowing into the wetland is introduced into the pretreatment module, and large suspended particles and floating objects are removed through the screen tank. Then, some organic matter and sediment are separated through the sedimentation tank, and the treatment efficiency is optimized through the adjustable flow rate device according to the change of water flow; S2: The water flows through the artificial floating bed filter, the gravel matrix filter and the plant-microorganism symbiotic filter in sequence; in the artificial floating bed filter, the plant roots adsorb and degrade some nitrogen and phosphorus pollutants; in the gravel matrix filter, the microbial community decomposes organic matter; and finally, the remaining pollutants are synergistically purified in the plant-microorganism symbiotic filter; S3: The water body enters the alternating area between the wetland oxidation zone and the anaerobic zone. In the oxidation zone, the dissolved oxygen content is increased through the microbubble aeration device and the solar-driven oxygenation system to enhance the decomposition of organic matter; in the anaerobic zone, heavy metal reduction and phosphorus precipitation are achieved through the action of specific anaerobic bacteria. S4: Introduce local aquatic plants and fish communities into wetlands, build a complete ecological chain through plant absorption, microbial decomposition and animal activities, and use salt-tolerant plants to adapt to extreme environments to further enhance the purification capacity and self-repair function of wetlands; S5: Dynamically adjust the flow pattern of wetland water according to water quality monitoring results, achieve uniform distribution of water flow through meandering water flow design and hydraulic buffer zone to avoid short-circuit phenomenon; optimize water flow path through natural terrain simulation and dynamic simulation to enhance the pollutant removal capacity of wetlands; S6: The control module collects real-time monitoring data including COD, total nitrogen, total phosphorus and dissolved oxygen concentration, and adjusts the operating parameters of each treatment module according to the monitoring results, including aeration intensity, filter operation mode and plant pruning cycle, so as to ensure that each module works together to achieve stable operation and efficient purification of the system; S7: The purified water is tested for water quality through the monitoring module. If the monitoring results meet the standards, it is discharged into the natural water body. If not, the operating parameters of each processing module are adjusted according to the optimization suggestions of the intelligent control module to re-optimize the purification process.

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