37 results about "Bioretention" patented technology

The invention discloses a bioretention facility design method based on numerical simulation and multi-objective optimization, and belongs to the technical field of rainwater management, and the method comprises the following steps: S1, obtaining a special background demand of a bioretention facility of a target area; s2: according to a filler selection layering model constructed by an analytic hierarchy process, inputting a special background demand into the filler selection layering model to obtain an internal optimal filler combination of the bioretention facility; s3, constructing a DRAINMOD hydrological model, and establishing a parameter space through BOX-Behnken experimental design to generate a plurality of groups of virtual working conditions; s4, simulating the multiple groups of virtual working conditions through a DRAINMOD hydrological model to obtain a simulation result; s5, on the basis of a sensitivity analysis method, key regulation and control parameters are determined according to simulation results; and S6, based on a simulation result, optimizing the key regulation and control parameters through a second-order polynomial regression model to obtain an optimal design parameter combination.

The invention belongs to the technical field of rainwater treatment, and relates to a multifunctional bioretention pond for enhancing nitrogen and phosphorus removal, a water accumulation layer, a covering layer, a planting layer, a medium layer, a submerging layer and a drainage layer are sequentially distributed in the pond from top to bottom, the drainage layer is provided with a drainage pipe, and a water outlet of the drainage pipe is flush with the top of the submerging layer; the submerged layer contains modified wood chips and scrap iron which are filled in a layered manner, the modified wood chips are obtained by grafting reaction of wood chips through a functional copolymer, and the use amount of the functional copolymer is 6-10 wt% of the wood chips; the functional copolymer is obtained by carrying out a copolymerization reaction on a pyridyl-containing acrylic acid monomer and a double-bond-containing acyl halide monomer according to a molar ratio of 1: (0.1-0.3). Through wood chip modification and filling structure improvement, a submerged layer of the bioretention pond is filled with modified wood chips and scrap iron in a layered manner, so that the bioretention pond has the effect of enhancing nitrogen and phosphorus removal, and meanwhile, the removal effect on heavy metal pollutants is also greatly improved.

The invention discloses a bioretention facility dielectric layer suitable for northwest regions and a preparation method, and relates to the technical field of environmental governance. The invention discloses a bioretention facility dielectric layer suitable for northwest regions and a preparation method thereof. The preparation method comprises the following steps: preparing biochar, selecting experimental biochar types, preparing modified biochar, selecting a biochar filling proportion, selecting a biochar filling mode, strengthening the dielectric layer and removing microorganisms. According to the invention, a bioretention facility medium layer suitable for northwest regions is designed, that is, a layered functional medium design is adopted, and a layer of strengthening medium is added on a basic medium, so that low-intervention and high-benefit collaborative purification is realized; special agricultural organic wastes in northwest regions are utilized to prepare biochar, and then the biochar is used for a medium layer of a bioretention facility; the bioretention facility medium layer has the advantages of comprehensive design functions including water retention, drainage and decontamination (nitrogen, phosphorus and microorganisms).

The application discloses a kind of biological retention tank whole cycle benefit evaluation method and system, the method includes, according to the structure parameter of biological retention tank and internal layering, constructs biological retention experimental column;According to the change of permeability coefficient of biological retention experimental column and the inflow of biological retention tank rainwater, obtain the failure time of biological retention tank;According to the failure time of biological retention tank, obtain the whole cycle operation benefit of biological retention tank.The application is established by biological retention experimental column according to biological retention tank, the relationship between permeability coefficient change and water inflow is obtained by experiment, the service life of biological retention tank is estimated, and the running benefit of biological retention tank whole cycle is calculated.Through the evaluation method of the application, whether biological retention facility has economic benefit in its life cycle can be judged, and whether design needs to be improved or maintenance scheme is optimized.

The utility model discloses a road drainage energy dissipation measure structure which comprises a granite gutter apron layer, a bioretention zone is arranged on one side of the granite gutter apron layer, a concrete layer is arranged on the side, away from the bioretention zone, of the granite gutter apron layer, a water permeable sidewalk is arranged on the top of the concrete layer, and the water permeable sidewalk is arranged on the side, away from the bioretention zone, of the granite gutter apron layer. A plurality of groups of linear drainage ditches are formed in the concrete layer; the pebble energy dissipation layer is arranged on the side, close to the bioretention zone, of the concrete layer, the pebble energy dissipation layer is used for reducing impact of water flow in the linear drainage ditch on the bioretention zone, and a gravel layer is arranged below the pebble energy dissipation layer; the filter screen plate is installed in the linear drainage ditch and used for filtering impurities and reducing the water flow speed, and a well is arranged above the filter screen plate. The biological retention zone can effectively prevent entering rainwater from impacting the biological retention zone, so that organisms in the biological retention zone are protected, and ecological balance in the biological retention zone is guaranteed.

1. Name of the product in this design: Tubular bioretention facility. 2. Purpose of this design: For the collection, purification, and slow discharge of runoff rainwater. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model relates to the field of municipal construction, in particular to a stepped bioretention belt based on terrain adaptation, which comprises a bioretention belt body, the section of the bioretention belt body is provided with a water storage layer / water retaining weir, a planting layer, a sand filter layer and a gravel layer from top to bottom, and a permeable blind pipe is arranged in the gravel layer. Uniform water distribution is achieved through a plurality of water holding areas distributed in a stepped mode, rainwater entering the water holding areas is collected through natural infiltration in a pebble bed or a permeable blind pipe, the rainwater exceeding the infiltration capacity is continuously accumulated in the water holding areas, and when the water storage height exceeds the crest height of a water retaining weir, the rainwater overflows to the next water holding area. According to the stepped bioretention belt, initial rainwater runoff pollution can be reduced, the rainwater runoff peak value can be reduced, the runoff yield can be reduced, and the problems of runoff flushing, uneven permeation and the like can be avoided.

This invention belongs to the field of rainwater treatment technology and relates to a multifunctional bioretention tank for enhanced nitrogen and phosphorus removal. The tank comprises, from top to bottom, a water accumulation layer, a covering layer, a planting layer, a media layer, a submerged layer, and a drainage layer. The drainage layer is equipped with a drainage pipe, the outlet of which is flush with the top of the submerged layer. The submerged layer contains layered modified wood chips and iron filings. The modified wood chips are obtained by grafting functional copolymers onto the wood chips, with the amount of the functional copolymers being 6-10 wt% of the wood chips. The functional copolymers are obtained through copolymerization of pyridine-containing acrylic monomers and double-bonded acyl halide monomers at a molar ratio of 1:(0.1-0.3). This invention, through wood chip modification and improved filling structure, layers modified wood chips and iron filings in the submerged layer of the bioretention tank, thereby enhancing the nitrogen and phosphorus removal effect and significantly improving the removal efficiency of heavy metal pollutants.

The invention provides a rainwater bioretention facility capable of removing halogenated benzene pollutants, and belongs to the technical field of water treatment.The rainwater bioretention facility comprises a plurality of treatment units which are arranged in a stepped mode and each comprise a pond body, a planting filler layer, a dissolved oxygen adsorption filler layer, a dechlorination filler layer and a first gravel layer, and the planting filler layers, the dissolved oxygen adsorption filler layers, the dechlorination filler layers and the first gravel layers are sequentially arranged in the pond bodies from top to bottom; a water outlet is formed in the lower part of the rear side of the tank body of the lowest treatment unit, and L-shaped pipes arranged at the lower parts of the tank bodies of the rest treatment units are connected with the next-stage treatment unit; except the first-stage treatment unit, transparent step-shaped stop blocks and splash plates are arranged above the planting filler layers of the other treatment units at intervals; and a plurality of herbaceous plants are planted on the planting filler layer. The bioretention facility can effectively remove toxic halogenated benzene series pollutants in rainwater, avoid the toxic action of the halogenated benzene series pollutants on nitrification and denitrification microorganisms, guarantee the efficient denitrification efficiency of the bioretention facility, effectively intercept particulate matters in the rainwater, avoid filler blockage and prolong the service life.

The present disclosure provides an intelligent low-carbon treatment and reuse system for stormwater and wastewater, including: a bioretention module for collecting stormwater and treating it to obtain treated stormwater; a numerically controlled drainage module for collecting oxidation-reduction potential data and pH data of the treated stormwater and transmitting them to a control module as environmental data, and discharging treated stormwater for a preset time period based on a first control signal sent by the control module; a stormwater and wastewater collection module for storing the discharged treated stormwater and maintaining water storage volume within a preset range; an irrigation module; and the control module. Stable, efficient and low-carbon treatment and reuse of stormwater and wastewater are achieved.

The application provides a stepped biological retention facility, comprising: a plurality of retention units arranged in a stepped manner, adjacent retention units being separated by water-permeable partitions, a first-level retention unit from low to high has, from top to bottom, a planting soil layer and a first filter material layer, a second-level retention unit from low to high has, from top to bottom, a planting soil layer, a first filter material layer and a second filter material layer, a third-level retention unit from low to high has, from top to bottom, a planting soil layer, a first filter material layer, a second filter material layer and a third filter material layer, and the rest of the retention units have, from top to bottom, a planting soil layer, a first filter material layer, a second filter material layer and a plurality of third filter material layers; the first filter material layer, the second filter material layer and the third filter material layer are respectively inoculated with complete nitrification bacteria, denitrifying bacteria and phosphorus accumulating bacteria. The retention facility can be arranged in an area with a large slope, and can efficiently reduce the input of agricultural non-point source nitrogen and phosphorus pollution through the cooperation of fillers and microorganisms.

The present disclosure provides an intelligent low-carbon treatment and reuse system for stormwater and wastewater, including: a bioretention module for collecting stormwater and treating it to obtain treated stormwater; a numerically controlled drainage module for collecting oxidation-reduction potential data and pH data of the treated stormwater and transmitting them to a control module as environmental data, and discharging treated stormwater for a preset time period based on a first control signal sent by the control module; a stormwater and wastewater collection module for storing the discharged treated stormwater and maintaining water storage volume within a preset range; an irrigation module; and the control module. Stable, efficient and low-carbon treatment and reuse of stormwater and wastewater are achieved.

The invention discloses a modular gradient rainwater purification garden system, a monitoring method and a construction method. The existing rainwater garden system generally has the problems of non-standard structure and inconvenience in assembly. The system sequentially comprises a permeable pavement layer, a bioretention layer, a capillary guide and drainage layer and a water storage and reuse layer from top to bottom, each functional layer structure adopts a standard module unit, and the standard module units are connected through stainless steel tenon-and-mortise connectors in an inserted manner; waterproof rubber sealing rings and bentonite sealing strips are arranged at splicing seams of the standard module units; an intelligent monitoring unit is arranged in each functional layer and comprises a turbidity sensor, a pH sensor, a water level sensor and a temperature sensor; all the sensors are connected to the wireless module, and sensor data are uploaded to the cloud prediction platform through a network for centralized processing. According to the rainwater garden system, the flexibility and convenience of the rainwater garden system in the construction, installation and later maintenance processes are improved.

A bioretention facility structure design optimization method considering carbon emission performs comprehensive evaluation on runoff control capability, construction operation carbon emission and construction investment cost by constructing a bioretention facility multi-target evaluation system, and optimizes the structure design of the facility by applying an NSGA-II multi-target intelligent optimization algorithm. The method comprises the specific steps that an HYDRUS-1D model is established to calculate the runoff control capacity, a carbon emission accounting model is established to calculate the carbon emission of facilities in the material production, transportation, construction and operation maintenance processes, an investment cost calculation method is established, and finally structural design schemes with different preferences are obtained through an optimization algorithm. According to the method, the runoff regulation and control effect, carbon emission and investment cost can be effectively balanced, an optimal bioretention facility design scheme is provided, the concept of green and low-carbon development is met, and improvement of urban ecological environment quality, alleviation of climate change and protection of water resources are facilitated.

The utility model discloses a green roof adopting ecological porous fiber cotton for drainage, which relates to the technical field of sponge city bioretention facilities and comprises a medium soil layer, an ecological porous fiber cotton water storage layer is covered below the medium soil layer, a plurality of drainage pipelines are pre-buried in the medium soil layer and the ecological porous fiber cotton water storage layer, and the drainage pipelines are communicated with the medium soil layer and the ecological porous fiber cotton water storage layer. A plurality of drainage holes are evenly distributed in the drainage pipeline, and permeable filtering membranes are arranged at the drainage holes. According to the utility model, a plurality of drainage pipelines are arranged in the medium soil layer and the ecological porous fiber cotton water storage layer, so that the water content in the medium soil layer and the ecological porous fiber cotton water storage layer can be increased in heavy rain weather, and under the reference of data provided by the soil moisture sensor, the water content can be controlled to be reduced by controlling the opening of the electromagnetic valve; therefore, excessive rainwater can be quickly drained out, and the phenomenon that the weight of a roof is increased due to accumulated water caused by excessive water content of the roof is avoided.

An assembled bioretention pond with nitrogen and phosphorus removal functions includes: a water collecting tank and a plurality of modules. Each module includes an anaerobic chamber and an aerobic chamber, a substrate in the anaerobic chamber is the same as that of the aerobic chamber, including a gravel distribution layer, a planting layer, a pyrite layer, a transition layer, and a gravel layer in sequence from top to bottom, and a ventilation pipe is vertically provided in the aerobic chamber and extends to the gravel layer, a water drainage pipe is mounted on a top of one side of the anaerobic chamber, a main pipe is mounted on a top of one side of the aerobic chamber and connected to a municipal stormwater pipe, a plurality of auxiliary pipes are arranged in the water collecting tank. This solution improves the ability to remove nitrogen and phosphorus pollutants from stormwater.

An improved bioretention system and method combines Water Treatment Residuals with biochar, to provide a synergistic phosphorus retention effect beyond what could be achieved with the WTRs or biochar alone. WTRs are commonly used in drinking water treatment plants and can include the material both in its fresh or aged form. Biochar is formed by the pyrolysis of organic material. Water can be directed to flow through a P retention media of WTRs and biochar to synergistically retain the phosphorus from the water beyond WTR or biochar alone.

The utility model relates to an assembly type biological detention pond which comprises a pond body, an overflow well, a footstone groove and a decorative plate, the pond body is made of metal, and a percolation layer is laid at the bottom of the pond body and is made of glass pumice; a protective layer is laid above the percolation layer; the lower section of the overflow well is buried in the percolation layer, and the upper end of the overflow well protrudes out of the protection layer; connecting pipes are arranged at the lower ends of the overflow wells. Through the standardized and modularized pool body and footstone groove structure, the rapid assembly can be carried out, the construction quality is high, the period is short, the pollution is small, and the comprehensive benefit is high; compared with the prior art, the tank body made of stainless steel is higher in durability and long in service life; the percolation layer adopts glass pumice to replace a gravel layer and a soil filler layer, so that the construction operation is more convenient, the permeability of the percolation layer is better, and the runoff control rate is higher; the decorative plates are used for replacing green plants, maintenance cost is low, and ornamental value is higher. Compared with a traditional bioretention pond, the bioretention pond has more advantages in the aspect of safety.

The utility model belongs to the technical field of water environment treatment, and relates to a lower part water inlet type bioretention facility, which comprises a catch basin, a mud trap, a water distribution main pipe, a water distribution overflow well and a bioretention facility, and the bioretention facility comprises a water storage layer, a covering layer, a planting soil layer, a water distribution layer, an artificial soil layer and a drainage layer which are arranged from top to bottom; the intercepting well, the mud sinking well and the water distribution overflow well are sequentially communicated, the mud sinking well is communicated with the water distribution overflow well through a water distribution main pipe, the water distribution main pipe is parallel to a bioretention facility, a plurality of water distribution branch pipes are vertically and horizontally connected to the water distribution main pipe, and the water distribution branch pipes are inserted into the water distribution layer. According to the utility model, rainwater collected by more rainwater pipes with deeper burial depth can flow into the bioretention facility in a self-flowing manner, so that a lot of sites in which rainwater runoff cannot be controlled are controlled, the removal rate of pollutants in the sites is improved, the pollution load of entering urban water is reduced, and the improvement of water environment is facilitated.

The utility model discloses a novel automatic water quality monitoring device for a bioretention zone, and relates to the field of water quality monitoring devices. The system comprises an overflow well, water quality detection modules and an Internet of Things terminal, the overflow well is arranged on the low side of the bioretention zone, a water outlet is formed in the lower end of the overflow well, a water outlet pipe is arranged at the water outlet, and the two water quality detection modules are arranged on the high side of the bioretention zone and the water outlet of the overflow well respectively. The two groups of water quality detection modules are both connected to the Internet of Things terminal, and the Internet of Things terminal is connected to the far-end monitoring system through a wireless network. According to the technical scheme, automation and real-time performance of rainwater quality monitoring before and after treatment of the bioretention zone are achieved, possibility is provided for timely knowing and evaluating the purification effect of the bioretention zone, the operation complexity of water quality monitoring is reduced, the frequency and cost of manual monitoring are reduced, the operation and maintenance cost is reduced, and the monitoring efficiency is greatly improved.

This invention provides a non-powered soil aeration system for bioretention facilities. The system includes a water storage module and an aeration module, which are interconnected and disposed within the soil layer. The water storage module is connected to the soil layer to receive rainwater and provide aeration. A drain outlet that can be selectively opened and closed is provided on one side of the aeration module. The drain outlet allows rainwater to drain from the aeration module and allows outside air to enter both the aeration module and the water storage module. A lifting support unit and a gate control unit are also provided. The lifting support unit selectively provides support to the gate control unit based on changes in the liquid level within the aeration module, and the gate control unit controls the opening and closing of the drain outlet based on changes in the liquid level within the aeration module. By modularly combining the water storage module and the aeration module, only a single or a small number of aeration modules are required to achieve uniform aeration under the soil of the regional green space facility, reducing costs.

The utility model relates to the technical field of bioretention belts, in particular to a sponge city municipal road bioretention belt which comprises a road, a water storage pool is arranged in the road, a green belt is fixedly connected to one side of the road, three ecological tree pools are arranged in the green belt, and the three ecological tree pools are fixedly connected to one side of the road. An overflow port is formed in each ecological tree pool, an adjusting drainage pipeline is fixedly connected to the interior of the road, and six drainage pipes are fixedly connected to the outer surface of the adjusting drainage pipeline. The ecological tree pool has the advantages that the water level of the ecological tree pool and the water storage pool can be conveniently adjusted, excessive water in the water storage pool is discharged through the sewer line, water pressure in the ecological tree pool and the water storage pool can be prevented from being too large, the service life of roads and green belts can be prolonged, and the number of times of municipal water replenishing for irrigation of the green belts can be conveniently reduced; and cyclic utilization of water resources is facilitated, and the green belt is maintained while the water resources are saved.

The application discloses a kind of biological retention purification method, device and readable storage medium for port rainwater collection and processing, comprising: first, through rainwater collection pipe, the rainwater of port yard stockyard drainage ditch that is initially filtered by grid is collected, then depth purification is carried out using biological filter with multiple layers of structure such as vegetation layer and water distribution layer, and the filtered rainwater is stored in target water collecting pool. Then, the water quality of the water collecting pool is evaluated at a predetermined time interval, and if the biological retention purification is passed, a reclaimed water reuse task is configured for it. This method realizes port rainwater purification and reuse, and improves water resource utilization.

The utility model relates to the technical field of urban drainage and sponge city construction, and discloses a bioretention facility combined with a pedestrian road tree pool, which comprises a sidewalk pavement, a plurality of pavement sponge mechanisms, bioretention ponds and a tree pool for planting trees, road rainwater is effectively collected, and the road rainwater rapidly enters a sidewalk sponge facility through a curbstone opening and is fully regulated and stored; facilities and landscapes are coordinated and fused, and a steel grating structure and hard pavement are integrally coordinated; sidewalk blind pipe rainwater is effectively collected, specifically, the sidewalk blind pipe is connected to a sponge facility stagnant water layer, and sufficient collection and purification are achieved; the rainwater in the sponge facility is used for supplementing water to the tree pool under the action of a blind pipe and a reverse osmosis layer, and the redundant rainwater is emptied to a facility drainage pipe; the movable grid facilitates regular cleaning and maintenance of sponge facilities, and ensures long-term effective operation of the system.

The utility model relates to a controllable bioretention system. The utility model is suitable for the technical field of rainwater purification. According to the technical scheme, a water collecting tank is used for collecting rainwater; the water inlet end of the water distribution assembly is connected to the output end of the water collection tank, and the water distribution assembly is provided with a plurality of water outlet ends; the purification assembly is internally provided with a plurality of filtering functional areas, the filtering functional areas are correspondingly communicated with the water outlet ends respectively, and the filtering functional areas at least can conduct coarse filtering, fine filtering and drainage on the rainwater in sequence in the rainwater flowing direction; the water outlet tank is connected to the output end of the purification assembly and used for storing clean water obtained by purifying the rainwater through the purification assembly; the detection assembly is arranged in the water collecting tank and used for obtaining turbidity information and first water quality information of rainwater in the water collecting tank; and the control assembly is in communication connection with the water distribution assembly and the detection assembly, and the control assembly can send the rainwater in the water collection tank into the purification assembly through the corresponding water outlet end based on the water quality interval where the rainwater is located so as to adjust the filtering function area where the rainwater needs to flow through.

The invention discloses a bioretention facility construction design method based on RF-GA fitting and electronic equipment. The method comprises the following steps: establishing an original data set according to existing bioretention facility hierarchical structure parameters and existing environmental parameters; the existing environmental parameters comprise urban runoff rainwater concentration during operation and treated pollutant effluent concentration data; the original data set is preprocessed and then used for training an RF model; obtaining target city environment parameters, determining numerical value ranges of different structure parameters in the hierarchical structure parameters of the existing bioretention facility, and splicing the numerical value ranges with the target city environment parameters; inputting the spliced data into a trained RF model, and combining a GA algorithm to obtain a parameter combination of the hierarchical structure of the target urban bioretention facility and the pollutant effluent concentration under the combination; based on the method, the hierarchical structure of the bioretention facility can be designed in a targeted manner, the effluent quality condition of the hierarchical structure can be predicted, and the purification effect of the bioretention facility can be improved.

A stormwater bioretention facility, including a pool body. The pool body includes an overflow layer, a cover layer, a filtration layer, an upper drainage layer, a biochar layer, a submerged layer, and a lower drainage layer from top to bottom. An upper drainage pipe is disposed in the upper drainage layer; a lower drainage pipe is disposed in the lower drainage layer. The upper drainage pipe and the lower drainage pipe include side walls including a plurality of inlet holes. The lower drainage pipe includes a water outlet raised to be level with the top surface of the submerged layer, and the submerged layer is filled with iron shavings and quartz sand material. The pool body further includes an overflow well having an opening covered by a manhole cover. The water outlets of the upper drainage pipe and the lower drainage pipe are connected to the overflow well.

A method for optimizing a structural design of a bioretention facility taking carbon emissions into consideration. A multi-objective evaluation system for a bioretention facility is constructed to perform comprehensive evaluation on a runoff control capability, carbon emissions during construction and operation, and construction investment costs; and an NSGA-II multi-objective intelligent optimization algorithm is used to optimize a structural design of the facility. The specific steps comprise: establishing a HYDRUS-1D model to calculate a runoff control capability; constructing a carbon emission accounting model to account for carbon emissions of a facility during material production, transportation, construction, and operation and maintenance; establishing an investment cost calculation method; and finally, by means of an optimization algorithm, obtaining structural design schemes having different preferences. The method can effectively balance a runoff regulation effect, carbon emissions and investment costs, can provide an optimal design scheme of a bioretention facility, and conforms to the concept of green and low-carbon development, thereby facilitating the improvement of the quality of an urban ecological environment, the deceleration of climate change and the protection of water resources.

The application discloses a biological retention device for synchronously removing new pollutants and nitrogen pollutants in rainwater runoff, and relates to the technical field of water environment treatment. The biological retention device comprises a pool body, six functional units are vertically constructed in the pool body from top to bottom, and the six functional units are overflow layer, protection layer, seepage layer, submerged layer, transition layer and drainage layer in sequence. The seepage layer is provided with a top drainage system, the drainage layer is provided with a bottom drainage system, and the top of the multifunctional overflow device is kept at a safe superheight from the top plate of the device. The seepage control layer is provided with a hydraulic linkage control system, and the intelligent opening and closing of the top drainage opening is realized through a sensing device. The modified substrate loaded with δ-MnO2 is filled in the functional units, the rich Mn element valence state (+2, +3 and +4) of the δ-MnO2 strengthens the removal of the new pollutants and the nitrogen pollutants, simultaneously forms the manganese oxidation-reduction cycle, guarantees the cyclic supply of the manganese element in the system, and does not need to be regularly supplemented with fillers.

The utility model provides a circulating aeration bioretention facility, which is characterized by comprising a permeation enhancing and drainage guiding module (1) arranged in a soil layer, a hollow water storage cavity is arranged in the permeation enhancing and drainage guiding module (1), the top of the permeation enhancing and drainage guiding module (1) is respectively provided with an air vent (11) and a water inlet, one side of the permeation enhancing and drainage guiding module (1) is connected with a drainage pipe (2), and the other side of the permeation enhancing and drainage guiding module (1) is connected with a water outlet pipe (3). A valve (3) is arranged between the permeation enhancing and drainage guiding module (1) and the drainage pipe (2), a switch (4) is arranged in the permeation enhancing and drainage guiding module (1), and the switch (4) is in signal connection with the valve (3) to control opening and closing of the valve (3); after rainwater enters the permeation-enhancing and drainage-guiding module, original air in the permeation-enhancing and drainage-guiding module is extruded by pressure to be discharged from the ventilation opening, and aeration is performed on the soil layer, so that the looseness of the soil layer is increased, the water inlet process is prevented from being slowed down or blocked by the tight soil layer, and the service life of the bioretention facility is further prolonged.