35 results about "Urban runoff" patented technology

The invention discloses a three-dimensional greening system for urban buildings. Rainwater is collected from a roof greening module and an outer wall greening module to a ground greening module and then flows into a water storage tank, the rainwater purified by a water purification unit meets the municipal miscellaneous water quality standard, the rainwater supplies water to the roof greening module and/or the outer wall greening module and supplements water to municipal miscellaneous water through a centrifugal pump and via a recycling pipeline to achieve the resource utilization of the rainwater and sludge. The three-dimensional greening system for the urban buildings has the advantages that the urban building roofs, wall surfaces and ground space are fully utilized to form the three-dimensional greening system, which not only improves and optimizes the urban ecology, and creates a comfortable working and living environment for the inner portions of the buildings, but also can collect, purify and recycle the rainwater, thereby reducing the urban runoff volume, relieving the pressure of an urban rainwater pipe network, reducing internal waterlogging disaster risks, and achieving the resource utilization of the rainwater.

The invention relates to an ecological filter groove construction method for cutting urban runoff pollution. An ecological filter groove is constructed in an urban green belt, and a water distribution groove and an energy dissipation plate are connected to the front of the ecological filter groove; the ecological filter groove is sequentially divided into a gravel layer, a ceramsite layer, a zeolite layer, a quartz sand layer and a soil layer from bottom to top, and shrubs and herbs are planted in the soil layer. Compared with the prior art, the configuration method of soil, large-particle-size quartz sand, middle-particle-size zeolite, small-particle-size ceramsite and large-particle gravel is adopted, good growth of plants can be guaranteed, ground surface runoff pollutants can be effectively held back as well, meanwhile the shrubs and the herbs are planted in the ecological filter groove in a matched mode, the soil layer is covered by grass sod, the vegetation is developed in root system, has good absorption function to nitrogen and phosphorus, can beautify urban landscape, and can generate good landscape benefits. According to the ecological filter groove construction method, the urban runoff pollution is cut down by constructing the ecological filter groove, and the method has the advantages of being easy and convenient to operate, low in cost, easy to manage and the like.

The invention relates to an urban runoff non-point source pollution advanced treatment and reuse technology. According to the technology, an urban runoff collecting system, a treatment system and a storing and recycling system are included; the urban runoff collecting system comprises a roadside water permeation plant zone and permeating type urban green land which are used for collecting and initially purifying an urban non-point source; the treatment system comprises an ecology gravel bed and wet land which are used for further removing pollutants such as heavy metal, nitrogen and phosphorus in the urban non-point source; the storing system comprises a high-quality water self-purification landscape pond which can achieve deep purification on an urban runoff, have the landscape effect and supply high-quality reclaimed water to urban landscaping and watering, underground water supplementing and the like. Accordingly, the technology which can efficiently remove various kinds of the pollutants in the urban non-point source runoff and produce and reuse the high-quality reclaimed water is supplied through optimization and improvement of all the units for urban runoff non-point source pollution.

The invention relates to a system and a method for ecological pollution control treatment of urban runoff rainwater resources. The system comprises a permeable pavement facility, a water filtering well and a bioretention facility which are sequentially connected in series, wherein the water filtering well comprises an outer well and an inner well sleeved with the outer well, and a water inlet pipeof the outer well is communicated with a water collecting pipe arranged in the permeable pavement facility; the inner well is filled with water filtering filler on the water permeable plate and is provided with an inner well drainage pipe; according to the bioretention facility, a water storage layer, a fiber blanket, a filler layer, a separation layer and a gravel layer are sequentially arrangedin a bioretention pond from top to bottom, and the fiber blanket contains plant seeds or plants grow on the fiber blanket; a water inlet pipe of the bioretention pond is communicated with an inner well drainage pipe of the water filtering well, and a perforated water collecting pipe and a drainage pipe which are communicated are arranged in the gravel layer. The system and the method have great reduction effects on runoff volume and flood peak flow of urban runoff rainwater, can effectively reduce and control the total amount and concentration of pollutants in rainwater resources, and are simple to operate and low in operation and maintenance cost, and the filler is easy to replace and regenerate.

The apparatus and methods of the present invention enable efficient and appropriate treatment of Urban Water Runoff, so that the treated Urban water Runoff can be can be introduced into public waterways without contaminating such waterways. The system apparatus utilizes adsorptive Organoclay media, mechanical filtration and ultraviolet sterilization. The methods and apparatus of the present invention remove contaminants from Urban Water Runoff to a level which enable the resulting effluent to meet appropriate standards for introducing the treated Urban water Runoff in to public waterways. The method and apparatus of water treatment of the present invention does not utilize chlorine containing compounds which, when combined with organic compounds can produce THM's that can become problematic when re-introduced to the downstream environment. The systems of the present invention can be made sufficiently compact so as to enable their use in remote locations.

The invention relates to the field of urban runoff biodegration, in particular to a planting soil for a rainwater-regulation permeable tree pool and a preparation method thereof. The planting soil includes, by weight, 70-80 parts of sandy loam, 20-30 parts of coco coir, 5-10 parts of flay ash and 0.5-1 part of humus. The preparation method includes the following steps that 1, raw material treatment is conducted, wherein in the sandy loam treatment, sandy loam is taken, broken up and then air cured for 1-2 days, and a sterilizing agent is sprayed for sterilization after air-curing; in the coco coir treatment, coco coir is taken, soaked in water to make the conductivity of the coco coir lower than 0.5 mS/cm and then air cured for 1-2 days after dewatering, the coco coir needs to be turned three-four times during air curing, and then a sterilizing agent is sprayed for sterilization; in the fly ash treatment, the fly ash is taken, dried until the water content reaches 5%-8% and ground until the particle size is 0.1-0.2 mm; 2, the raw materials are blended, wherein the humus is taken to uniformly mixed with the sandy loam, the coco coir and the fly ash treated in the step 1. The planting soil can ensure the normal growth of plants, the permeation effect is good, and the removal effect of runoff contaminants is good.

The invention discloses an urban agglomeration drainage process simulation method. The method comprises the following steps: (1) conceptual urban agglomeration hydrological unit division; (2) simulating an urban catchment zero-dimensional area and accumulated water; (3) rainwater well generalization and communication; (4) solving the communication relationship between the rainwater well and the pipeline; and (5) coupling with a peripheral pipeline or river network model. According to the method, the contradiction between precision and efficiency of urban runoff and runoff simulation in large scales of regions and drainage basins is solved, high-precision simulation can be carried out on urban inland inundation, backflow and other drainage processes in the time period required by urban group flood prevention and drainage, and the heterogeneity influence of the model in different simulation scales can also be reduced.

The invention discloses a water storage structure of an urban runoff unit. A settling tank and a water storage tank are built under an urban highway, water passing holes are formed in the upper portion of an isolation wall between the settling tank and the water storage tank, a shutter grate is arranged above the settling tank, the settling tank and the water storage tank are provided with ventilation pipelines communicated with the outside, the upper ends of the ventilation pipelines are placed into a flower bed of a sidewalk and used for exhausting air in the settling tank and the water storage tank, dredging grooves are formed in the bottom of one side of the settling tank and in the bottom of one side of the water storage tank and are lower than the settling tank and the water storage tank, the bottoms of the settling tank and the water storage tank are gradually inclined along the direction of the dredging grooves to form inclined surfaces with slopes alpha, drain outlets are formed in the upper portions of the settling tank and the water storage tank respectively and sealed by drain outlet cover plates, and walking ladders aligned to the respectively corresponding drain outlets are arranged in the settling tank and the water storage tank. The water storage structure is low in cost, high in water storage capacity and implementation feasibility and thoroughly solves the problem of urban inland inundation, and accumulated rainwater can be reused.

The invention discloses an urban initial surface runoff rainwater collection pretreatment system which comprises a water inlet pipe and a water filtering tank, wherein the water filtering tank is connected with the water inlet pipe. Initial rainwater collected by the water inlet pipe is filtered by the water filtering tank and enters a discharging pipe, rainwater in the discharging pipe enters a transition area, rainwater in the transition area enters a water storage area, the water storage area comprises a water storage tank, a floating plate is hinged on the water storage tank, a buoy is mounted at the end of the floating plate, and a first overflowing pipeline is mounted on water storage tank. When the floating plate is horizontal, rainwater in the water storage tank is discharged into municipal sewage pipeline through the first overflowing pipeline, and a discharging port is formed in the bottom of the water storage tank. The urban initial surface runoff rainwater collection pretreatment system is reasonable in structure, can collect and pretreat initial rainwater, solves the problem of urban runoff pollution caused by the initial rainwater and prevents later rainwater from diluting the initial rainwater.

The invention discloses a roof rainwater source regulating device based on a sponge city concept and a running method, relates to the technical field of rainwater source emission reduction and water source protection, and discloses a method suitable for cleanly collecting roof rain and conserving groundwater. The roof rainwater source regulating device based on the sponge city concept comprises a flow abandoning system, a water storing system, a groundwater conserving system and a control system. When the device runs, a control unit receives signals of a liquid level switch and a sensor and controls the opening and closing state of an arc-shaped gate and a flow abandoning hole valve, and the aims of emission reduction and process control of an urban roof rainwater source are achieved. The roof rainwater source regulating device is ingenious in design and high in automation degree and can greatly avoid surface runoff flood peaks, weaken urban runoff pollution loads, save rainwater resources, conserve groundwater, easily relieve the drainage pressure of an urban pipe network, reduce the probability of floods and ensure life and property safety of people.

The invention relates to an intelligent system and method for regulation and control of urban runoff rainwater via wetland. Inflow water involved in the invention is direct surface runoff in a catchment area around a riverway and mixed-flow sewage possibly occurring in non-rainfall weather. The intelligent regulation and control system comprises aclosure intercepting unit, a wetland unit, an inflow inlet judgment unit, an outflow water judgment unit and a regulation unit, wherein the intercepting unit is used for intercepting inflow water; the wetland unit is used for carrying out advanced treatment on the inflow water; the inflow water judgment unit and the outflow water judgment unit are used for providing judgment basis for water inflow and water outflow of the wetland unit; and the regulation unit is used for regulating and controlling the wetland unit under the conditions of different inflow water qualities and inflow water quantities and different outflow water qualities and outflow water quantities. According to the intelligent regulation and control system for treating direct surface runoff and mixed-flow sewage possibly occurring in non-rainfall weather provided by the invention, different inflow and outflow water qualities and different inflow and outflow water quantities can be intelligently regulated, and the method enables the system to have higher use efficiency and is suitable for places surrounding riverways in urban and rural areas and in urban-rural junctions.

The embodiment of the invention provides an urban runoff data processing method. The method comprises the following steps: determining a data set; wherein the data set at least comprises the followingparameters: basic attribute data of land utilization, basic attribute data of water quality, basic attribute data of weather, runoff coefficient parameters and basic attribute data of pollutant discharge; acquiring parameters and data in the determined data set; calculating and accounting the urban runoff pollutant discharge amount, and compiling an urban runoff discharge data set. According to the scheme, the urban runoff data processing method is provided, and water resource data can be subjected to refined analysis and processing.

An LID system design method based on an improved PSO algorithm comprises the following steps that (1) site selection analysis is conducted, specifically, by integrating the 3S technology, an urban underlying surface is analyzed from the aspects of the current situation and planned land, and the land range and the area upper limit which can be used for building an intercepting well and a storage pond are recognized; and (2) based on a site selection analysis result, secondary development is carried out on the SWMM model by adopting an improved PSO algorithm to finish LID facility arrangement and scale calculation. According to the method, the SWMM drainage model is subjected to secondary development by integrating the 3S technology and utilizing the improved PSO algorithm, and compared witha manual allocation accounting method, the method can determine the control index of the urban runoff pollution source with the minimum engineering investment.

The present invention discloses a retention, storage, filtration, discharge and guide system of a hilly extending landscape zone. The system comprises a vegetation layer, a foundation soil layer, an original soil layer, and a discharge channel vertically disposed through the foundation soil layer to an excavation face, which are arranged in sequence from top to bottom. The excavation face is located at an upper interface of original soil. In the present invention, rainwater is held by the vegetation layer and permeates the layer, thereby reducing a rainwater source of urban runoff. The foundation soil layer provides soil for plant growth. Rainwater on roads is held and permeates, stored, and filtered, thereby decreasing a pollution load of urban runoff. The discharge channel not only can quickly discharge gathered water in the landscape zone, but also can release water stored in the foundation soil layer for plants in the landscape zone during a drought, thereby effectively solving the problem of difficult landscape conservation. The system disclosed by the present invention integrates retention, storage, filtration, discharge and guide functions with a landscape function. The disadvantages of recessed green land are improved. The area of landscape region is increased, the rainwater source of urban runoff is reduced, and the pollution load is decreased. Furthermore, the conservation problem of partially requiring water in the landscape zone is solved. The system is beautiful and practical with a harmonious relationship between human and water, and the construction is simple.

The invention discloses an urban time-varying gain rainfall-runoff process simulation calculation method, which comprises the following steps of preparing basic data including rainfall data, urban underlying surface space distribution, urban area planning and the like; dividing urban calculation units, dividing calculation areas into lakes, catchment areas and wetlands according to types of underlying surfaces of cities, and further dividing the catchment areas into six subclasses including common permeable surfaces, impermeable surfaces, roads, depression, small lakes and low-impact development measures; carrying out runoff calculation: taking rainfall as model input, and respectively calculating runoff of each calculation unit; and carrying out confluence calculation: according to the runoff production calculation result, obtaining the total flow of the region through earth surface confluence and pipe network confluence calculation. According to the method, the complex underlying surface condition of a city can be comprehensively considered, the urban runoff and runoff process can be accurately simulated through the urban time-varying gain nonlinear runoff and runoff production principle, and the method has great significance in urban inland inundation risk assessment and early warning and forecasting.

The invention relates to a water storage mechanism for a wet-type grassed swale system. The water storage mechanism comprises a reservoir, wherein a cover plate is arranged on the reservoir; a plurality of liquid passing channels are uniformly formed in the cover plate; a layer of filter screen is arranged on the upper surface of the cover plate and a layer of filter screen is arranged on the lower surface of the cover plate; the reservoir is connected to a water purifier by virtue of a water discharging pipeline; the water purifier is connected to a water feeding pipeline; a water pump is arranged on the water feeding pipeline; and an anti-seepage layer is arranged on the inner wall of the reservoir. The water storage mechanism is applicable to the canal-type wet-type grassed swale system; and the water storage mechanism is good in anti-seepage performance and is capable of effectively controlling urban runoff non-point source pollution.