12 results about "Storm water runoff" patented technology

In accordance with at least one aspect of this disclosure, a system for filtering storm water runoff comprises, a disposable filter configured to be placed directly in storm water drainage infrastructure for a prescribed filtration period after which the disposable filter is removed from the storm water drainage infrastructure. The disposable filter includes, a permeable container filled with a nutrient rich substrate and a plurality of spores embedded within the nutrient rich substrate configured to develop into mycelium over a prescribed growth period.

The invention discloses a rainstorm runoff flow limiting and overflowing impact resistance device and method, and belongs to the technical field of runoff non-point source pollution abatement. The device comprises a flow dividing well body and further comprises a water inlet, a flow limiting opening and an overflowing opening; by adopting a double-stage shunting mode of initial-stage interception and middle-later-stage overflow and combining the design of horizontal symmetrical distribution of the water inlet and the flow limiting port and vertical distribution of the overflow port and the water inlet, water flow can be guided to form a stable transverse flowing path, so that high-pollution rainwater is intercepted in the initial stage of rainfall by virtue of a gravity flow principle, and high-pollution rainwater is intercepted in the middle-later stage of rainfall. Clean rainwater is rapidly discharged through the flow limiting opening, so that the short-time heavy rainfall condition can be effectively handled, the flow dividing stability in different rainfall stages can be guaranteed, the impact load resistance of the device is greatly improved, the system overload risk caused by sudden flow change is reduced, and it is ensured that the efficient pollution treatment effect is always kept in long-term operation.

A sponge facility spatial layout optimization method for urban community rainfall flood regulation and storage comprises the steps that firstly, multi-source data of a research area is collected, sub catchment subareas are divided, hydrological parameters are extracted, the current annual rainstorm runoff process is simulated through an SWMM model, and the regulation and storage requirements of all the sub catchment subareas are calculated; 2, two-dimensional hydrodynamic simulation is carried out through an SWMM coupling LISFLOOD-FP model, and a ponding depth distribution diagram is obtained. And 3, based on the multi-source data and the ponding depth distribution map, combining sponge facility layout conditions, constructing a suitability evaluation system, generating a comprehensive suitability score map, and dividing priority areas. And 4, constructing a regulation and storage target equation according to the regulation and storage demand and the suitability score map, solving a facility area combination meeting the regulation and storage demand, and screening out a minimum cost scheme. And 5, performing multi-objective optimization on the facility layout in combination with the ponding depth distribution diagram and the priority region, and screening out an optimal layout scheme. According to the method, the optimal facility layout is provided for each sub catchment area, and the regulation and storage efficiency and the space adaptability of sponge facilities are effectively improved.

This invention discloses a method and system for simulating stormwater runoff infiltration and storage in rain gardens for sponge cities. First, using a centimeter-resolution three-dimensional topographic model of the target catchment area, the layered structure and geotechnical parameters of LID (Light Infiltration Device) facilities, and minute-by-minute rainfall intensity-duration curves of the design storm as input, an improved Green-Ampt infiltration model considering the layered media and surface water storage driving effects is constructed. This model is integrated with a two-dimensional shallow water equation surface runoff model driven by centimeter-resolution micro-topography through a two-way temporal coupling mechanism, achieving minute-by-minute dynamic simulation of the entire design storm process. This fully reproduces the entire hydrological process of surface runoff collection, LID facility infiltration and storage, and overflow. This invention significantly improves the accuracy and reliability of stormwater process simulation, and can simultaneously output spatiotemporal dynamic visualization results of runoff, quantitative hydrological indicators, and compliance assessment results of sponge city design specifications, providing reliable technical support for the refined design and effect verification of LID facilities.

The application discloses a multi-parameter water quality detector applied to the field of chemical or physical analysis, which comprises a movable base, a plurality of different types of sensors arranged in the movable base, a stand column fixedly connected to the lower end of the fixed base, and a plurality of sample inlet tubes fixedly connected to the inside of the stand column and uniformly distributed in a circle. The two use modes of one-to-many and one-to-one are adopted to realize the multi-parameter synchronous detection of water bodies at different depths and the single-parameter detection of different items of water bodies at different depths at one time. The two modes are complementary to each other. On the one hand, the comprehensive parameter data of water bodies at different depths can be obtained to judge the water body anomaly. On the other hand, the comprehensive parameter data is taken as a reference to greatly reduce the action times of the sensors and air pumps, reduce the energy consumption, realize high-frequency monitoring, timely find the sudden changes of storm runoff and toxic wastewater, and reduce the abnormal omission between two detections.

Provided in the present application are a slope restoration device and method for desertification control. The slope restoration device is arranged on a slope and comprises a sand barrier assembly and a water collection and soil moisture conservation assembly, wherein the sand barrier assembly is configured to reduce wind speed and intercept wind-blown sand, and can reduce the runoff velocity and reduce water and soil loss on the slope surface during rainfall; and the water collection and soil moisture conservation assembly is configured to store rainwater, and under the action of light, water in the water collection and soil moisture conservation assembly transpires upwards, thereby increasing the humidity of the slope and promoting vegetation coverage and greening on the slope. The present application is suitable for ecological restoration of sandy slopes in arid and water-scarce regions, can effectively collect rainwater, especially rainstorm runoff, has significant effects on soil and water conservation and on reducing runoff erosion, can also intercept wind-blown sand to provide conditions for vegetation restoration, and can improve the survival rate in vegetation restoration. The present application uses degradable main materials and is more environmentally friendly, and can be mass produced, featuring high promotion potential and involving simple construction. The present application can be popularized and applied to almost-flat semi-fixed and fixed sandy lands by means of surface microtopographic modification.

The invention provides a multi-disaster multi-mode flood flow intelligent monitoring and early warning method, system and device, and relates to the field of disaster early warning. Establishing a rainstorm-runoff coupling model for predicting the surface runoff yield, the confluence time and the runoff peak value based on the soil water content, the vegetation coverage and the surface slope data under different rainfall capacities; constructing a river channel confluence coupling model based on the flow velocity, the water level and the section form of river channel section monitoring for predicting river channel flood confluence time, confluence amount and on-way water level change; judging whether there is a riverway confluence risk according to the real-time predicted riverway flood confluence time, confluence amount and on-way water level change; when the riverway confluence risk exists, the flood inundation range, the water depth distribution and the evolution speed are predicted through a pre-trained flood evolution coupling model based on the surface runoff, the confluence time and the change speed of the runoff peak value in combination with the landform data. According to the invention, the accuracy, timeliness and reliability of disaster early warning can be improved.

The application discloses a functional rainwater garden suitable for a sponge city, which comprises multiple-stage baffling areas which are connected in sequence and have gradually decreasing heights, wherein the multiple-stage baffling areas comprise a first-stage baffling area, a plurality of intermediate-stage baffling areas and a last-stage baffling area; the first-stage baffling area and the intermediate-stage baffling areas are sequentially provided with a first water storage layer and a first cover layer from top to bottom; the last-stage baffling area is sequentially provided with a second water storage layer, a second cover layer, a planting soil layer, a medium sand filtering layer, a geotextile, a storage and infiltration layer, a gravel drainage layer and a water permeation pipe from top to bottom; the first cover layer and the second cover layer comprise gravel and construction waste particles; and the storage and infiltration layer is made of construction waste. The construction waste is used in the construction of the cover layer and the storage and infiltration layer, so that the construction waste piling problem can be solved, the disposal cost can be saved, the environmental pollution can be reduced, the rainwater can be infiltrated in place by using the green land, the rainstorm runoff peak value and rainwater discharge can be reduced, and the groundwater recharge can be increased.

This invention discloses a method and system for spatializing flood storage capacity based on remote sensing data, belonging to the field of flood storage capacity spatialization technology. The method includes: determining spatial raster data of rainfall, runoff, and lake / reservoir volumes for the vegetation ecosystem of the target area to be evaluated, based on remote sensing data; and then determining the spatialized flood storage capacity of the target area based on these data. This invention utilizes the rasterizable nature of remote sensing data to achieve the purpose of spatialized calculation of flood storage capacity.

This utility model discloses a floating constructed wetland, including a floating platform and a water-blocking cover. Multiple first connecting lugs are fixedly connected to both sides of the floating platform, and multiple planting baskets are snapped onto the top of the floating platform. Multiple second connecting lugs are fixedly connected to the outer wall of one side of the water-blocking cover. Fastening bolts are threaded between adjacent pairs of first connecting lugs and between the second connecting lug and a first connecting lug of one of the floating platforms. Multiple water outlet pipes are sealed and inserted into one side of the water-blocking cover, and drain pipes are inserted into both ends of the water outlet pipes. A clamp is fitted at the connection between the drain pipe and the water outlet pipe. Multiple perforations are provided on the planting baskets, and a layer of expanded clay filler is laid inside the planting baskets. A layer of silt filler is laid on top of the expanded clay filler layer. This utility model allows rainwater runoff to pass over the floating constructed wetland and drain through the water outlet and drain pipes, thereby avoiding damage to the floating constructed wetland.

The invention relates to the technical field of flood data processing, in particular to a multi-scene-driven basin flood dynamic simulation method and system. The watershed flood dynamic simulation method comprises the following steps: S1, fusing meteorological, geographic and hydrological data, constructing a surface grid based on the fused data, and dividing a watershed catchment surface by using the surface grid; s2, designing a rainstorm scene set according to a historical rainfall sequence, climate characteristics, a recurrence period and rainfall duration; constructing a response relationship of the runoff coefficient dynamically changing along with the rainfall time sequence; constructing a rainstorm-runoff scene by using the rainstorm scene set and the response relationship; and S3, constructing a flood simulation model, and carrying out flood dynamic simulation on a rainstorm-runoff scene. When a rainstorm-runoff scene is designed, a multi-dimensional rainstorm scene set is established according to a historical rainfall sequence, climate characteristics, a recurrence period and rainfall duration of a research area, different climate conditions and extreme meteorological events can be covered, and the degree of adaptation to hydrological events under different climate change backgrounds is improved.

The present application relates to the technical field of flood data processing, and particularly relates to a multi-scenario driven basin flood dynamic simulation method and system. The basin flood dynamic simulation method comprises the following steps: S1, fusing meteorological, geographical and hydrological data, constructing a surface grid based on the fused data, and dividing a basin catchment area by using the surface grid; S2, designing a rainstorm scenario set according to a historical rainfall sequence, climate characteristics, a return period and rainfall duration, constructing a response relationship of a runoff coefficient dynamically changing with rainfall time sequence, and constructing a rainstorm-runoff scenario by using the rainstorm scenario set and the response relationship; S3, constructing a flood simulation model and performing flood dynamic simulation on the rainstorm-runoff scenario. In the present application, a multi-dimensional rainstorm scenario set is built according to a historical rainfall sequence, climate characteristics, a return period and rainfall duration in a research area when designing a rainstorm-runoff scenario, which can cover different climate conditions and extreme weather events, and the adaptability to hydrological events under different climate change backgrounds is improved.