CN114482226A - River bank rainwater ecological drainage system and method for river city - Google Patents
River bank rainwater ecological drainage system and method for river city Download PDFInfo
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Abstract
The invention provides a system and a method for ecologically discharging rainwater on riverbanks of riverside cities. The invention utilizes the height difference of the urban landform to drain the rainwater into the underground water storage body, the underground water storage body stores the rainwater, and the rainwater is regulated and controlled by peak clipping, so that the condition of waterlogging can be avoided; the underground water storage body is respectively and controllably connected with the underground water channel and the surface water channel, so that the macroscopic regulation and control of surface water and underground water are realized; the rainwater in the underground water storage body is filtered by the permeable material, so that the purpose of purifying the rainwater is achieved, and the rainwater purification device can be applied to a ground source heat exchange system, thereby improving urban non-point source pollution, improving the ecological environment of the riverside and realizing the purposes of ecological protection, energy conservation and environmental protection of the riverside.
Description
Technical Field
The invention belongs to the technical field of ecological protection and environmental protection and energy conservation, relates to smart city construction, and particularly relates to a river bank rainwater ecological drainage system and method for a river along a river.
Background
The research of non-point source pollution in China started in the last 80 th century, wherein the non-point source pollution refers to pollution in other forms, such as organic pollution, water eutrophication or toxicity and harm, caused by the fact that dissolved and solid pollutants are converged into receiving water (including rivers, lakes, reservoirs, gulfs and the like) from unspecified places under the scouring action of precipitation or snow melting through a runoff process. Non-point source pollution includes urban non-point source pollution and agricultural non-point source pollution.
The urban non-point source pollution is mainly generated by the shower and scouring action of rainfall runoff, and particularly in the early stage of rainstorm, pollutants deposited on the surface of the earth and in a sewer pipe network are suddenly scoured and converged into a receiving water body in a short time by the rainfall runoff, so that the water body pollution is caused. According to observation, the pollutant concentration generally exceeds the ordinary sewage concentration in the early stage of rainstorm (20 min before rainfall), and urban non-point sources are main pollution sources causing water body pollution and have the characteristics of paroxysmal property, high flow, heavy pollution and the like. Especially in the Yangtze river, Zhujiang river and other watersheds with larger rainfall, the problem of urban non-point source pollution is serious. For example, the Yangtze river is one of mother rivers of Chinese nationalities, the river basin area reaches 180 ten thousand square kilometers, and approximately occupies 1/5 of the total land area of China, and a plurality of medium and large cities such as Yibin, Chongqing, Yichang, Yueyang, Wuhan, Suzhou, Nanjing, Shanghai and the like are bred along the shore, so that how to reduce the non-point source pollution of the water body in the Yangtze river city, especially the non-point source pollution of the Chongqing industry city to the water body, is always a key point of the ecological protection of the water body in the Yangtze river.
At present, for urban rainwater drainage, river valley landforms are generally collected by galleries constructed in gully sections and then directly drained to rivers, and serious pollution is caused. In addition, in consideration of economy, the gully has a certain design range, and if extreme rainstorm weather occurs, waterlogging occurs, so that the life and property safety of people is seriously threatened and damaged.
Therefore, how to regulate and control the rainwater discharge, control the urban non-point source pollution and improve the ecological environment is a great project benefiting the nation and the people to carry out the ecological protection along the river bank.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, the first purpose of the invention is to provide an ecological drainage method for rainwater on the river bank of a river-following city, and the second purpose of the invention is to provide an ecological drainage system for rainwater on the river bank of the river-following city.
In order to achieve the first purpose, the invention adopts the following technical scheme: a method for ecologically discharging rainwater on river banks in river valley areas along rivers comprises the steps of discharging rainwater into an underground water storage body constructed at the tail end by utilizing urban excavation and filling, discharging the rainwater into the underground water storage body by utilizing urban landform height difference, and controllably connecting a water outlet end of the underground water storage body with an underground water channel and a surface water channel respectively to realize controllable conversion of underground water and surface water.
In the technical scheme, the rainwater is drained to the underground water storage body by utilizing the height difference of the urban landform without additionally arranging a power source; the underground water storage body is arranged to store rainwater and cut peaks, so that the condition of waterlogging can be avoided, and the rainwater can be regulated and controlled; and the underground water storage body is respectively and controllably connected with the underground water channel and the surface water channel, so that the macroscopic regulation and control of the surface water and the underground water are realized.
In a preferred embodiment of the invention, the underground water channel or the surface water channel is selected to be opened according to the water body condition and/or the water level condition of the surface water and the underground water storage body.
In order to achieve the first purpose, the invention adopts the following technical scheme: the utility model provides an ecological drainage system of river bank rainwater along river city, has built underground water storage body along river valley district, and the rainwater utilizes city landform altitude difference to arrange to underground water storage body in, and underground water storage body's delivery port is connected with groundwater channel and surface water passageway respectively, is equipped with at least one first control valve on the groundwater channel, is equipped with at least one second control valve on the surface water passageway, through controlling first control valve and second control valve operation, realizes the controllable conversion of groundwater, surface water.
In the technical scheme, the underground water storage body is arranged to store rainwater, so that the rainwater is regulated and controlled; and the underground water storage body is respectively controllable and is connected with the underground water channel and the surface water channel, and the macroscopic regulation and control of the surface water and the underground water are realized by controlling the opening and closing of the first control valve and the second control valve, so that the operation is convenient and simple.
In a preferred embodiment of the invention, the system further comprises a controller and a sensor; the sensor comprises a turbidity sensor and a water level sensor which are arranged in the underground water storage body, and the water level sensor is arranged in surface water, and the controller receives information of the sensor through the Internet of things and controls the start and stop of the first control valve and the second control valve according to the information; the controller is also remotely connected with the big data platform, and the controller transmits the detected water level information of the underground water storage body, the turbidity and the surface water to the big data platform, so that the centralized gathering display control of the water body information is realized.
In the technical scheme, the controller, the first liquid level sensor and the second liquid level sensor are arranged, and the controller selectively opens the first control valve or the second control valve according to the liquid levels measured by the first liquid level sensor and the second liquid level sensor, so that the controllable regulation of surface water and underground water is realized, and the device is more automatic and intelligent; and the controller is also remotely connected with the big data platform, and can realize the centralized collection display control of the water body information.
In another preferred embodiment of the present invention, in the rainfall period, when the water level of the surface water is higher than the highest threshold value, judging whether the water level in the underground water storage body is higher than the threshold value, if so, closing the first control valve and the second control valve, if not, closing the first control valve, and opening the second control valve until the water level in the underground water storage body reaches the threshold value, and closing the second control valve; judging whether the turbidity of the water in the underground water storage body is higher than a threshold value, if so, continuously closing the first control valve and the second control valve, if not, opening the first control valve to enable the water in the underground water storage body to be discharged underground, and after the water in the underground water storage body is discharged, closing the first control valve to open the second control valve to enable the surface water to flow into the underground water storage body; the circulation is carried out until the water level of the surface water is lower than a threshold value; and in the non-rainfall period, when the water level of surface water is lower than the lowest threshold value, judging whether the turbidity of the water in the underground water storage body is higher than the threshold value, if so, closing the first control valve and the second control valve, and if not, opening the second control valve to enable the water in the underground water storage body to flow into the surface water body.
The technical scheme can realize drought and flood regulation and guarantee water consumption.
Specifically, in the rainfall period, when the water levels of the surface water and the underground water storage body are higher than the threshold value, the surface water channel and the underground water channel are both closed; when the surface water is higher than the highest threshold value and the water level of the underground water storage body is not higher than the threshold value, the surface water channel is opened to introduce the surface water into the underground water storage body, the water level of the surface water is reduced, and waterlogging is avoided. When the turbidity of the water in the underground water storage body is higher than a threshold value, the surface water channel and the underground water channel are closed due to poor water quality, and the water in the underground water storage body is not discharged outwards; when the turbidity of the water in the underground water storage body is not higher than a threshold value (the water quality is better), opening an underground water channel to discharge the water in the underground water storage body to an underground soil body to become underground water; after the water in the underground water storage body is discharged, the underground water channel is closed, and the surface water channel is opened, so that the surface water flows into the underground water storage body, and waterlogging is avoided.
In the non-rainfall period, when the water level of surface water is lower than the lowest threshold value and the turbidity of water in the underground water storage body is higher than the threshold value, the surface water channel and the underground water channel are closed because the water quality is poor, and the water in the underground water storage body is not discharged outwards; when the water level of surface water is lower than the lowest threshold value and the turbidity of water in the underground water storage body is not higher than the threshold value, the surface water channel is opened to enable the water in the underground water storage body to flow into the surface water body, so that drought is avoided, and water use is guaranteed.
In another preferred embodiment of the present invention, the sensors further include a plurality of temperature sensors, the temperature sensors are disposed at the underground water storage body and the indoor terminals of the ground source heat exchange system, and the controller controls the operation of the ground source heat pump host system according to the information of the temperature sensors, the temperature regulation requirement in winter and summer, and the target temperature.
In the technical scheme, the underground water storage body is buried underground, the stored water obtains shallow geothermal energy through heat exchange and then exchanges heat with the ground source heat exchange system, the shallow geothermal energy is fully utilized, and energy is saved.
In another preferred embodiment of the invention, water in the surface water channel is directly discharged to the surface water body by utilizing water conservancy height difference, and the surface water body is pressurized by a pump and then discharged to the underground water storage body; or the water in the surface water channel is pressurized by a pump and then discharged to the surface water body, and the surface water body is directly discharged to the underground water storage body by utilizing the water conservancy height difference.
Among the above-mentioned technical scheme, underground water storage body and surface water body one of them utilizes the water conservancy discrepancy of elevation to discharge, and the other then discharges after relying on the pump pressurization, only needs the unilateral to set up the force (forcing) pump, more energy-conserving.
In another preferred embodiment of the present invention, the water of the underground water channel is discharged to the aquifer of the underground soil body by using the water conservancy height difference.
In another preferred embodiment of the present invention, the underground impoundment body has an aquifer filled with a water permeable material.
In another preferred embodiment of the invention, a plurality of back flushing pipes are embedded in the aquifer, the inlets of the back flushing pipes are connected with the conveying pipe, a back flushing control valve is arranged on the conveying pipe, and the inlet of the conveying pipe is communicated with a back flushing water source or a back flushing air source; the backflushing water source is higher than the water outlet of the backflushing pipe, and backflushing of the aquifer is realized by self weight; or the water of the backflushing water source is pressurized by the water pump and then is conveyed to the backflushing pipe.
In the technical scheme, the water or gas in the backflushing pipe flushes the aquifer in the underground water storage body, so that silting is prevented. Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a flow chart of a method for ecologically discharging rainwater along river banks in a river city according to an embodiment of the present application.
Fig. 2 is a block diagram of a flow of an ecological drainage system for rainwater along river banks in a river city according to a second embodiment of the present application.
Fig. 3 is a schematic structural view of an underground water storage body provided with a back flushing pipe in the third embodiment of the present application.
The specification reference numbers: underground water storage body 10, aquifer 11, back flushing pipe 12, delivery pipe 13 and back flushing control valve 14.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "vertical", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the present invention.
In the description of the present invention, unless otherwise specified and limited, it is to be noted that the terms "mounted," "connected," and "connected" are to be interpreted broadly, and may be, for example, a mechanical connection or an electrical connection, a communication between two elements, a direct connection, or an indirect connection via an intermediate medium, and specific meanings of the terms may be understood by those skilled in the art according to specific situations.
Example one
The invention provides an ecological rainwater discharge method along river banks of river cities, as shown in figure 1, in a preferred embodiment, an underground water storage body with at least one tail end is constructed in a valley section along a river by utilizing city excavation and filling, rainwater is discharged into the underground water storage body by utilizing the height difference of urban landforms, and the water outlet ends of the underground water storage body are respectively and controllably connected with an underground water channel and a surface water channel, so that the controllable conversion of underground water and surface water is realized. Specifically, the underground water channel or the surface water channel can be selectively opened according to the water level conditions of the surface water and the underground water storage body.
Particularly, when raining, rainwater directly falls into the underground water storage body; or the water inlet of the underground water storage body can be connected with the water outlet of the original rainwater drainage system (such as a gully with a slope), and rainwater is collected with the gully and then enters the underground water storage body; of course, other modes can be adopted to lead the rainwater to enter the underground water storage body.
Adopt such technical scheme, the rainwater is stored in the underground water storage body, can avoid the condition of waterlogging. Along with the increase of the water stored in the underground water storage body, when the water level of the underground water storage body and the surface water exceeds a threshold value, the underground water channel is opened to discharge the water in the underground water storage body to the ground; when the surface water level exceeds the highest threshold value and the water in the underground water storage body does not exceed the threshold value, the surface water channel is opened, and the surface water body (such as in rivers and lakes, as long as the surface water source is available) is discharged into the underground water storage body; and in the drought period, the water in the underground water storage body can be discharged to the surface water body to be used as the surface water. The specific discharging method can adopt the technical scheme of utilizing the controller and the sensor to realize discharging described in the second embodiment.
In another preferred embodiment, the underground impoundment body has an aquifer filled with a water permeable material. Rainwater entering the underground water storage body is filtered by the water permeable material and then discharged to the underground water channel and the surface water channel, so that the quality of surface water and underground water is improved. Specifically, when the water quality of the underground water storage body reaches the set requirement, the discharge is performed according to the water level conditions of the surface water and the underground water storage body as described above, and the description is omitted. When the water quality of the underground water storage body does not meet the set requirement and the water level of the underground water storage body does not exceed the set liquid level, the water is not discharged temporarily; when the water quality of the underground water storage body does not reach the set requirement and the water level of the underground water storage body exceeds the set liquid level, the surface water channel is opened, the underground water channel is closed, and the underground water channel is discharged into rivers and lakes to become surface water.
The invention constructs an underground water storage body at the tail end of urban rainwater drainage to form an underground water storage space with a certain scale, and the underground water storage body is provided with a water-containing layer filled with a water-permeable material. A conversion control system is arranged between the original rainwater drainage system and the peripheral underground water storage body, so that rainwater in the original rainwater drainage system enters the underground water storage body to be stored, filtered and purified, and finally discharged into rivers and lakes after the exchange of absorbing shallow geothermal energy and the like to become surface water.
Example two
The embodiment provides an ecological rainwater drainage system for river banks in river rivers, as shown in fig. 2, in a preferred embodiment, underground impoundment bodies are built in sections along river valleys by using urban excavation and filling, rainwater is drained into the underground impoundment bodies by using urban landform height difference, preferably, aquifers filled with water-permeable materials are arranged in the underground impoundment bodies, and the underground impoundment bodies are built by adopting the excavation and filling mode. The water outlet of the underground water storage body is respectively connected with the underground water channel and the surface water channel, the underground water channel is provided with at least one first control valve, the surface water channel is provided with at least one second control valve, and the controllable conversion of underground water and surface water is realized by controlling the operation of the first control valve and the second control valve.
In another preferred embodiment, the treatment system further comprises a controller and sensors including a turbidity sensor, a water level sensor disposed in the groundwater reservoir, and a water level sensor disposed in the surface water. The controller receives information of the sensor through the Internet of things and controls the start and stop of the first control valve and the second control valve according to the information; the controller is also remotely connected with the big data platform, the controller transmits the detected water level information of the underground water storage body, the turbidity and the surface water to the big data platform, and the centralized gathering display control of the water body information is realized.
Specifically, normally, the first control valve and the second control valve are closed. In the rainfall period, when the water level of surface water is higher than the highest threshold value, the controller judges whether the water level in the underground water storage body is higher than the threshold value according to the signal of the liquid level sensor, if so, the first control valve and the second control valve are closed, and the surface water channel and the underground water channel are both closed; if the water level of the surface water is higher than the highest threshold value and the water level in the underground water storage body is not higher than the threshold value, continuously closing the first control valve, opening the second control valve, discharging the surface water body into the underground water storage body through the surface water channel, and closing the second control valve until the water level in the underground water storage body reaches the threshold value; the controller judges whether the turbidity of the water in the underground water storage body is higher than a threshold value or not according to the signal of the turbidity sensor, and if the turbidity of the water in the underground water storage body is higher than the threshold value, the first control valve and the second control valve are continuously closed, so that the surface water channel and the underground water channel are both closed; if the turbidity of the water in the underground water storage body is not higher than the threshold value, opening a first control valve to open an underground water channel so that the water in the underground water storage body is discharged into an underground aquifer; after the water in the underground water storage body is discharged, closing the first control valve and opening the second control valve so as to close the underground water channel and open the surface water channel and enable the surface water to flow into the underground water storage body through the surface water channel; the circulation is carried out until the water level of the surface water is lower than the threshold value, and the circulation is stopped.
In the non-rainfall period, when the water level of surface water is lower than the lowest threshold value, the controller judges whether the turbidity of water in the underground water storage body is higher than the threshold value or not according to the signal of the liquid level sensor, if the turbidity of water is higher than the threshold value and the water quality is poor, the first control valve and the second control valve are closed, so that the surface water channel and the underground water channel are both closed; if the turbidity of the water in the underground water storage body is not higher than the threshold value and the water quality is better, the second control valve is opened to open the surface water channel, so that the water in the underground water storage body flows into the surface water body through the surface water channel.
In the invention, water in the surface water channel is directly discharged to the surface water body by utilizing water conservancy height difference, the surface water body is pressurized by a pump and then discharged to the underground water storage body, specifically, the surface water channel is obliquely and downwards arranged from one end of the underground water storage body to one end of the surface water, a water pump is connected in parallel on the surface water channel, the inlet of the water pump is connected with the surface water, and the outlet of the water pump is connected with the underground water storage body. The surface water channel can be a top pipe driven into the earth surface of the earth body, and can also be a built roadway, or a laid pipeline and the like. Of course, the water in the surface water channel can be pressurized by the water pump and then discharged to the surface water body, the surface water body is directly discharged to the underground water storage body by utilizing the water conservancy height difference, specifically, the surface water channel is obliquely and downwards arranged from one end of the surface water to one end of the underground water storage body, the inlet of the water pump is connected with the underground water storage body, and the outlet of the water pump is connected with the surface water.
In the invention, the water in the underground water channel is discharged to the aquifer of the soil body by utilizing the water conservancy elevation difference, and specifically, the underground water channel can be a push pipe driven into the underground, and also can be a built roadway, a laid pipeline or the like.
It should be noted that, when the height difference between the constructed underground water storage body and the river or lake is small and the bottom of the underground water storage body is lower than the liquid level of the river or lake, a partition plate can be arranged in the middle of the underground water storage body, a certain distance is formed between the lower end surface of the partition plate and the bottom of the underground water storage body, the water inlet and the water outlet of the underground water storage body are respectively positioned at two sides of the partition plate, and the height of the water inlet of the underground water storage body is higher than that of the water outlet. Therefore, rainwater firstly enters the underground water storage body from the water inlet on one side of the partition plate, then is filtered in the aquifer of the underground water storage body and then seeps downwards, and then enters the other side of the partition plate through the space between the lower end surface of the partition plate and the bottom of the underground water storage body, and then water seeps upwards, and can be discharged to a surface water channel by virtue of the pressure difference between the water inlet and the water outlet of the underground water storage body. Of course, when the pressure difference between the water inlet and the water outlet of the underground water storage body is too small or no pressure difference exists, water can be pressurized by the pump and then discharged.
Above-mentioned technical scheme, through setting up the division board, can prolong the rainwater and store the route that the body flows in underground, improve the purifying effect of rainwater.
In another preferred embodiment, the sensors further comprise a plurality of temperature sensors, the temperature sensors are arranged at the underground water storage body and the indoor terminals of the ground source heat exchange system, and the controller controls the operation of the ground source heat pump host system according to the temperature regulation requirement in winter and summer and the target temperature according to the information of the temperature sensors. Specifically, the underground water storage body is connected with the ground source heat exchange system through a circulating pipeline, and a ground source heat pump host system is arranged on the circulating pipeline.
In winter, the water in the underground water storage body obtains shallow geothermal energy through heat exchange, the temperature of the shallow geothermal energy is increased, and then the water exchanges heat with a ground source heat exchange system to heat, so that energy is saved; if the temperature of the underground water storage body is reduced and is lower than the indoor temperature of the ground source heat exchange system after rain in winter, the heat exchange is suspended. In summer, the water in the underground water storage body obtains shallow geothermal energy through heat exchange, the temperature of the shallow geothermal energy is reduced, and then the water exchanges heat with the ground source heat exchange system to refrigerate, so that energy is saved; and if the indoor temperature of the ground source heat exchange system is lower than the target temperature after rainfall in summer, stopping heat exchange.
EXAMPLE III
The structure and principle of the embodiment are basically the same as those of the second embodiment, but the difference is that a backflushing system is arranged in the underground water storage body, as shown in fig. 3, in the embodiment, a plurality of backflushing pipes 12 are embedded in a water-bearing stratum 11 of an underground water storage body 10, inlets of the backflushing pipes 12 are connected with a conveying pipe 13, a backflushing control valve 14 is arranged on the conveying pipe 13, and an inlet of the conveying pipe 13 is communicated with a backflushing water source or a backflushing air source.
In the embodiment, the backflushing water source is higher than the water outlet of the backflushing pipe, the backflushing of the aquifer is realized by the self weight, for example, the backflushing water source is river water at the upstream of a river channel, or the backflushing water source is a water storage device, the backflushing is realized by utilizing the height difference of the backflushing water source, an electrified backflushing water pump is not needed, and the electric energy is saved; of course, the water of the backflushing water source can also be pressurized by the water pump and then conveyed to the backflushing pipe. The back flushing air source is compressed air provided by an air compressor.
After the underground water storage body 10 runs for a period of time, due to accumulation of impurity substances, silting can be generated, the percolation effect of the underground water storage body 10 is directly influenced, the fluid of the backflushing water source/backflushing air source is conveyed into the backflushing pipe 12, the pressure water/compressed air discharged by the backflushing pipe 12 washes the water-bearing layer 11 of the underground water storage body 10, silting is prevented, and the percolation effect of the underground water storage body 10 is recovered. In the description herein, reference to the description of the terms "preferred embodiment," "one embodiment," "some embodiments," "an example," "a specific example" or "some examples" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
While embodiments of the invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.
Claims (10)
1. The ecological rainwater discharge method for the riverside city along the river is characterized in that at least one terminal underground water storage body is built in the riverside valley section by utilizing urban excavation and filling, rainwater is discharged into the underground water storage body by utilizing urban landform height difference, and the water outlet end of the underground water storage body is respectively and controllably connected with an underground water channel and a surface water channel, so that controllable conversion of underground water and surface water is realized.
2. The ecological drainage method of river banks along a river as claimed in claim 1, wherein an underground water channel or an earth surface water channel is selectively opened according to the water body condition and/or water level condition of surface water and underground water storage bodies.
3. The ecological rainwater drainage system is characterized in that at least one underground water storage body is built in a valley section along a river by utilizing urban excavation and filling, rainwater is drained to the underground water storage body by utilizing the height difference of urban landforms, a water outlet of the underground water storage body is respectively connected with an underground water channel and a surface water channel, the underground water channel is provided with at least one first control valve, the surface water channel is provided with at least one second control valve, and controllable conversion of underground water and surface water is realized by controlling the operation of the first control valve and the second control valve.
4. The ecological riverside river bank rainwater drainage system as claimed in claim 3, further comprising a controller and a sensor;
the sensor comprises a turbidity sensor and a water level sensor which are arranged in the underground water storage body, and the water level sensor is arranged in surface water, and the controller receives information of the sensor through the Internet of things and controls the start and stop of the first control valve and the second control valve according to the information;
the controller is also remotely connected with the big data platform, the controller transmits the detected water level information of the underground water storage body, the detected turbidity and the detected surface water to the big data platform, and the centralized collection display control of the water body information is realized.
5. The ecological riverside river bank rainwater drainage system as claimed in claim 4, wherein in the rainfall period, when the surface water level is higher than the highest threshold, the ecological drainage system judges whether the water level in the underground water storage body is higher than the threshold, if so, the first control valve and the second control valve are closed, if not, the first control valve is closed, and the second control valve is opened until the water level in the underground water storage body reaches the threshold, and the second control valve is closed; judging whether the turbidity of the water in the underground water storage body is higher than a threshold value or not, if so, continuously closing the first control valve and the second control valve, if not, opening the first control valve to enable the water in the underground water storage body to be discharged underground, and after the water in the underground water storage body is discharged, closing the first control valve to open the second control valve to enable the surface water to flow into the underground water storage body; the circulation is carried out until the water level of the surface water is lower than a threshold value;
and in the non-rainfall period, when the water level of the surface water is lower than the lowest threshold value, judging whether the turbidity of the water in the underground water storage body is higher than the threshold value, if so, closing the first control valve and the second control valve, and if not, opening the second control valve to enable the water in the underground water storage body to flow into the surface water body.
6. The ecological riverside river bank rainwater drainage system as claimed in claim 4, wherein the sensors further comprise a plurality of temperature sensors, the temperature sensors are arranged at indoor terminals of the underground water storage body and the ground source heat exchange system, and the controller controls the operation of the ground source heat pump host system according to the information of the temperature sensors, the temperature regulation requirement in winter and summer and the target temperature.
7. The ecological riverside rainwater drainage system according to claim 3, wherein water in the surface water channel is directly drained to a surface water body by utilizing water conservancy height difference, and the surface water body is drained to an underground water storage body after being pressurized by a water pump;
or the water in the surface water channel is pressurized by a water pump and then discharged to the surface water body, and the surface water body is directly discharged to the underground water storage body by utilizing the water conservancy height difference.
8. The ecological riverside river bank rainwater drainage system according to claim 3, wherein the water in the underground water channel is drained to an aquifer of an underground soil body by utilizing water conservancy height difference.
9. The ecological drainage system for river banks along river with river as claimed in any one of claims 4 to 8, wherein said underground impoundment has an aquifer filled with a water permeable material.
10. The ecological riverside river bank rainwater drainage system according to claim 9, wherein a plurality of back flushing pipes are buried in the aquifer, inlets of the back flushing pipes are connected with the conveying pipe, a back flushing control valve is arranged on the conveying pipe, and an inlet of the conveying pipe is communicated with a back flushing water source or a back flushing air source;
the backflushing water source is higher than the water outlet of the backflushing pipe, and backflushing of the aquifer is realized by self weight; or the water of the backflushing water source is pressurized by the water pump and then is conveyed to the backflushing pipe.
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| CN101851944A (en) * | 2010-05-31 | 2010-10-06 | 黄必录 | Karst landform tap water project in villages |
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