CN113250136B - Ecological water replenishing system and water replenishing method for rain-source river - Google Patents
Ecological water replenishing system and water replenishing method for rain-source river Download PDFInfo
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- CN113250136B CN113250136B CN202110622610.5A CN202110622610A CN113250136B CN 113250136 B CN113250136 B CN 113250136B CN 202110622610 A CN202110622610 A CN 202110622610A CN 113250136 B CN113250136 B CN 113250136B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B3/00—Engineering works in connection with control or use of streams, rivers, coasts, or other marine sites; Sealings or joints for engineering works in general
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B7/00—Barrages or weirs; Layout, construction, methods of, or devices for, making same
- E02B7/20—Movable barrages; Lock or dry-dock gates
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/02—Methods or installations for obtaining or collecting drinking water or tap water from rain-water
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/103—Naturals or landscape retention bodies, e.g. ponds
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/10—Collecting-tanks; Equalising-tanks for regulating the run-off; Laying-up basins
- E03F5/105—Accessories, e.g. flow regulators or cleaning devices
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- E—FIXED CONSTRUCTIONS
- E03—WATER SUPPLY; SEWERAGE
- E03F—SEWERS; CESSPOOLS
- E03F5/00—Sewerage structures
- E03F5/22—Adaptations of pumping plants for lifting sewage
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
Abstract
The invention provides an ecological water replenishing system and a water replenishing method for a rain-source river. The water intake system of the water plant comprises an overflow well water outlet system and a gate well water outlet system which are arranged in parallel; the comprehensive water replenishing utilization system comprises four water utilization modes, including an upstream water replenishing port of a river channel, the artificial wetland, the small lake reservoir and a reserved later-stage water replenishing interface, final effluent of the artificial wetland and the small lake reservoir is connected to the river channel through a pipeline, and the water replenishing pipe network and the small lake reservoir are respectively provided with the reserved later-stage water replenishing interface. The water outlet pipe network of the water supply pipeline system adopts a main system to form a ring pipeline, and the branch system adopts an arrangement mode that a branch pipe network flows into each outlet. The rainwater storage system comprises a rainwater storage module, rainwater flows through the silt abandoning well to the rainwater storage module, and by adopting the technical scheme of the invention, water replenishing in a drainage basin can be realized, and the effects of abundant running water, clear water quality and standard reaching of the drainage basin can be improved aiming at different situations.
Description
Technical Field
The invention relates to the field of river channel water area environment management, in particular to an ecological water supplementing system for a rain-source river.
Background
Along with the aggravated development of cities, watershed changes from clear to turbid, wherein a rain-induced river plays an essential role in the urban development, the flow rate of the rain-induced river mainly comes from rainfall, the environmental capacity is small, the hydrodynamic force is insufficient, the self-cleaning capability is poor, and watershed black and smelly are easily caused, so that the watershed pollution problem is caused. With the emphasis of the country on the ecological environment, drainage basin treatment becomes an indispensable part, including solving the problems of the shortage of base flow, drainage basin water quality and the like. Under the condition of water resource shortage, most of the prior art adopts water sources such as reservoirs to replenish water so as to improve the water quality, but the cost of the mode is higher. Or, as disclosed in CN200610062548.4, a river channel of a river is used to fetch a water source outside a downstream river mouth and supply water to an urban river, a separation dam is arranged at the river mouth of the river channel in the urban river, a section of the river channel is separated into two independent river channels, a sluice and a pump station are respectively arranged at the river mouths of the two independent river channels, under the water blocking effect of the sluice, the water level of the two independent river channels is raised to a certain extent by the natural force of sea tides or artificial pump stations, one sluice is opened, the river water in the river channel of the sluice starts flowing downstream, and the river water in the river channel of the sluice is closed to supply water to the upstream of the river under the action of the water level difference of the two independent river channels, bypasses the separation dam, and flows downstream through the river channel with the sluice opened. However, this method can only realize recycling, and is difficult to realize the effects of water quality improvement and sewage treatment, and the biological channel is closed, and the ecological river is destroyed.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provide an ecological water replenishing system which can recycle the effluent of a sewage plant aiming at a rain-source drainage basin, realize drainage basin water replenishing and improve the effects of abundant flowing water and clear water quality reaching the standard of the drainage basin.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an ecological water replenishing system for a rain-sourced river comprises a water plant water taking system, a water replenishing pipeline system, a water replenishing comprehensive utilization system and a rainwater storage system; the water intake system of the water plant comprises an overflow well water outlet system and a gate well water outlet system which are arranged in parallel; the main path of the overflow well water outlet system is that the overflow well water outlet is connected with a pump station through a pump station water inlet pipe, the pump station contains a water collecting pool and a lifting pump chamber, and water flow lifts the water in the water collecting pool to a water replenishing pipeline system through a lifting pump; the auxiliary road is a main road side and directly connects the tail water of the overflow well water outlet system and the gate well water outlet system to the river channel through pipelines; the comprehensive water replenishing utilization system comprises four water utilization modes, including an upstream water replenishing port of a river channel, the artificial wetland, the small lake reservoir and a reserved late stage water replenishing interface, wherein the final effluent of the artificial wetland and the small lake reservoir is connected to the river channel through a pipeline, and the water replenishing pipe network and the small lake reservoir are respectively provided with the reserved late stage water replenishing interface;
The rainwater storage system comprises a rainwater water storage module, rainwater flows through the sludge discarding well to the rainwater water storage module, and can also be divided into three 3 water utilization modes, namely water replenishing for an upstream water replenishing port of a river channel, an artificial wetland and a small lake reservoir;
the ecological water supplementing system is provided with a manual-electric dual-purpose opening and closing gate for water inlet and outlet of an overflow well water outlet system, water inlet of a collecting basin and water inlet of a sediment abandoning well, and the manual-electric dual-purpose opening and closing gate is used for executing a water supplementing control strategy of an ecological water supplementing monomer;
the upstream river inlet of the river channel and the water inlets of the artificial wetland and the small lake reservoir are provided with flow and pressure regulating wells for executing a regulating strategy of water quantity and water pressure required by a water replenishing area;
the outlet water of the artificial wetland and the small lake reservoir are provided with a gate and a water quality monitoring port for executing an ecological water replenishing and water quality control strategy.
Furthermore, the water quality standard of the outlet water of the water intake system of the water plant is not lower than the IV-class standard of surface water.
Furthermore, the water outlet pipeline of the water plant is divided into two paths which are respectively connected with the water outlet system of the overflow well and the water outlet system of the gate; the outlet water of the gate water outlet system directly enters the rear end of the raw tail water discharge pipeline system; the overflow well water outlet system is provided with an overflow well, one side of the overflow well is an overflow well water outlet pipeline, an original tail water discharge system flows in, one side of the original tail water discharge system flows in through a pump station water inlet pipe in the water collecting tank, the overflow well is provided with an overflow weir, the overflow weir is next to the overflow well water outlet pipeline, and the overflow well water inlet pipeline and the overflow well water outlet pipeline are provided with a water-electric-hand dual-purpose opening and closing gate.
Further, the water collecting tank comprises a pump station water inlet manual and electric dual-purpose opening and closing gate and a rectification wall, the rectification wall is provided with a water through hole, and a ventilation cap and a manhole are arranged above the water collecting tank;
the other setting of catch basin promote the pump chamber, promote the pump chamber and set up the centrifugal pump, manage through the absorbing water of centrifugal pump and connect catch basin and centrifugal pump, the outlet pipe is through moisturizing pipeline system connection moisturizing comprehensive utilization system.
Furthermore, the gate well is additionally arranged at the water inlet and the water outlet of the small lake pond to control the water inlet and the water outlet, and the gate well is used as a water quality monitoring port to periodically detect the water quality and can enter the river channel after judging that the water quality is not polluted.
Furthermore, a flow and pressure regulating well is arranged at the position of the river channel connection and exit point.
Furthermore, the rainwater storage module adopts a PP water storage module, the PP water storage module is buried, a sediment blocking net is arranged in the sludge-depositing and discarding well to further remove impurities, the sludge-depositing and discarding well is provided with a valve for a rainwater outlet pipe leading to the PP water storage module to control the use of the water storage module, the sludge-depositing and discarding well is also provided with a discarding pipe, when the water storage module reaches the maximum water storage capacity, the valve is closed, and rainwater overflows from the discarding pipe to return to the original rainwater system; the slag blocking net is positioned below the outlet of the rainwater inlet pipe, and the flow discarding pipe is higher than the rainwater outlet pipe.
Furthermore, the water inlet pipe and the water outlet pipe in the overflow well are the same in height; the inlet height of the pump station water inlet pipe is far lower than the water inlet and outlet pipe of the overflow well and the pump station pump stop water level; the top of the overflow weir is higher than the elevation of the water inlet pipe and the water outlet pipe.
Furthermore, the water outlet pipe network of the water replenishing pipeline system adopts a main system to form a ring pipeline, and the branch system adopts an arrangement mode that a branch pipe network flows into each outlet.
The invention also provides an ecological water replenishing method for the rain-sourced river, which adopts the following technical scheme:
the method comprises the following steps of (1) discharging effluent treated by an urban sewage treatment plant built near the downstream of a river channel to a pump station preferentially through an overflow well, lifting the effluent to a water replenishing pipeline system through the pump station, and finally reaching a water replenishing comprehensive utilization system to a water replenishing port at the upstream of the river channel, an artificial wetland and a small lake pond;
when the water replenishing system fails or the overflow well is overhauled or water replenishing is not needed, the manual and electric dual-purpose opening and closing gate leading to the overflow well water is closed, and tail water of the water quality purification plant is directly discharged to the downstream of the river channel through the gate well;
under the condition that the water yield of the water quality purification plant is far greater than the ecological water replenishing water demand, opening a manual and electric dual-purpose opening and closing gate on the water outlet pipeline of the overflow well, and allowing the excess water to enter the downstream of the direct drainage river channel through overflow;
Under the condition of emergency water shortage of the river channel, ecological water supplement of a pump station is directly discharged to the upstream of the river channel through gate control;
when the water shortage of the riverway is relieved, the water replenishing of the riverway is divided into two paths, one path of water is directly replenished to the upstream of the riverway, the other path of water is transited through the artificial wetland or the small lake pond and is finally discharged to the upstream of the riverway, and the water replenishing of the artificial wetland, the small lake pond and the riverway is realized;
when ecological water supplement of a pump station cannot meet the requirement of water supplement of a river channel, water stored in the rainwater storage system is called to supplement water to the upstream water supplement port through control of the pipeline gate, and if the water is rich, water is also supplemented to the artificial wetland or the small lake reservoir if the artificial wetland or the small lake reservoir needs water supplement, water stored in the rainwater storage system is supplemented to the artificial wetland or the small lake reservoir simultaneously.
The invention has the beneficial effects that:
(1) in the water-deficient city, the standard effluent of the sewage plant is used for replenishing water, and the effluent of the sewage plant is used as the water replenishing of the river channel, so that the problem of river channel water shortage in the water-deficient city is solved, the rain-source river has poor water quality, river pollution and insufficient self-purification capacity, and the sewage is recycled.
(2) The upstream rainwater is used for replenishing water at the starting end, and on one hand, when the treated water amount of the water quality purification plant is insufficient, the rainwater resource is fully utilized for regulation and storage to perform emergency water replenishing on the riverway; on the other hand, the sediment flow discarding well further reduces impurities and silt entering the river, and ensures the water quality in the module and the river channel; and need not the power equipment pressurization, possess certain economical, PP retaining module buries with, does not occupy urban space, and the mud pit uses the couple to connect and blocks the sediment net, promotes to get rid of impurity, and the manual work of being convenient for need not go into the well, and the direct bank operation and inside set up the effectual control retaining module of gate intake, and the dual-purpose flashlight can combine local condition to take electronic or manual.
(3) The overflow well contains the overflow well outlet pipe and is higher than the pump station inlet tube, makes the overflow well intake water preferentially get into the pump station, when exceeding the highest lifting capacity of pump station, for guaranteeing that the system is reliable, unnecessary water flows to former tail water discharge passage from the overflow well outlet pipe. The weir top is higher than the overflow well outlet pipe in the overflow well, effectively avoids the river course water problem of flowing backward.
(4) The pump station inlet tube is less than the pump station and stops the pump water level, and the overflow well inlet tube is not less than and stops the pump water level, and effectual utilization water level difference, time overflow well water flow in pump station is guaranteeing under the prerequisite that the pump station inlet tube fully intakes, has also guaranteed the earthing degree of depth of engineering, compares the pump station inlet tube and is higher than the design of opening and close the water level, and the effectual pump station catch basin degree of depth that reduces the disposable investment.
(5) Adopt and bury formula catch basin or PP retaining module, above-mentioned earthing adds the cap of ventilating, and the ground space of make full use of can carry out suitable afforestation above, satisfies on the basis of engineering measure, has also promoted ecological recreation environment, unites two into one practical engineering and view promotion.
(6) The number of the water passing holes in the middle of the rectifying wall is equal to the number of the pumps, so that the average distribution of water is fully considered, and the water flow is uniformly and regularly distributed stably. And small water passing holes are reserved on two sides of the wall body, so that the scouring force of water power on the wall body is reduced.
(7) In order to ensure the stability, safety and reliability of the system and accord with economy, the main pipeline system is annular, the branch system is dendritic, the optimal scheme is provided for the design of a pipe network system through pipe network adjustment, the water supplement amount is simulated by hydrodynamic force, and landscape water demand is adopted; in the aspect of pipe selection, a nodular cast iron pipe is used in grooving construction, a steel pipe is used for a top pipe, a pipe bridge is used for a pipe bridge, a steel pipe is used for exposed laying, and a PE pipe is used for traction.
(8) The matching of the pump and the pipeline fully consider the redundancy design, fully prepare for sudden pollution events, and fully provide conditions for long-term water replenishing quantity and water replenishing.
(9) The reclaimed water utilization system can effectively utilize reclaimed water, including upstream water replenishing to a river channel, reserving a late stage water replenishing interface, and finally returning to a small lake pond water replenishing and constructed wetland water replenishing of the river channel, so that on one hand, water resources are fully utilized, and on the other hand, under the condition of unstable water quality, the water quality in a river can be improved through the small lake pond and the constructed wetland.
(10) The artificial wetland and the small lake reservoir are additionally provided with the gates at the water inlet and the water outlet, so that the water inlet and the water outlet can be effectively controlled, the water quality is periodically detected at the position of the gate at the water outlet, and the water can enter a river channel after the water quality is judged to be not artificially polluted, so that the water quality safety problem can be effectively guaranteed.
(11) Reserve later stage moisturizing interface and reserve the passageway for later stage moisturizing, consider long-term development, avoid the secondary construction.
(12) The position of the upstream outlet of the riverway is provided with a flow regulating pressure regulating valve for effectively controlling the water volume and the water pressure of the outlet water.
Drawings
Fig. 1 is a system layout of the present invention.
FIG. 2 is a plan view of the pump station of the present invention.
Fig. 3 is a sectional view a-a of fig. 2.
Fig. 4 is a cross-sectional view of an overflow well of the present invention.
Fig. 5 is a plan view of a mud trap well according to the present invention.
Fig. 6 is a cross-sectional view C-C of fig. 5.
Detailed Description
The invention is further described below with reference to the accompanying drawings.
Reference is made to the accompanying drawings. This embodiment includes water works water intaking system 1 that is located river course downstream department, the moisturizing comprehensive utilization system 2 and the rainwater that are located river course upstream department store with system 4 to and connect water works water intaking system 1 and moisturizing comprehensive utilization system 2 and rainwater and store with moisturizing pipeline system 3 of system 4. The water intake system 1 of the water plant comprises an overflow well water outlet system and a gate well water outlet system which are arranged in parallel. The main path of the overflow well water outlet system is that the water outlet of an overflow well 6 is connected with a pump station 9 through a pump station water inlet pipe 8, the pump station 9 is internally provided with a water collecting tank 13 and a lifting pump chamber 14, and water flow lifts the water in the water collecting tank 13 to a water replenishing pipeline system 2 through a lifting pump; the auxiliary road is a main road side and directly connects the tail water of the overflow well water outlet system and the gate well water outlet system to the river channel through pipelines. The water quality standard of the water intake system of the water plant is not lower than the IV-class standard of surface water.
Specifically, the water outlet pipeline 5 of the water plant is divided into two paths, and the two paths are respectively connected with the water outlet system of the overflow well and the water outlet system of the gate. The water outlet of the gate water outlet system directly enters the rear end of the raw tail water discharge pipeline system, the overflow well water outlet system is provided with an overflow well 6, one side of the overflow well 6 is an overflow well water outlet pipeline 7 and flows into the raw tail water discharge system, one side of the overflow well water outlet system flows into a water collecting tank 13 through a pump station water inlet pipe 8, the overflow well 6 is provided with an overflow weir 12, the overflow weir 12 is closely adjacent to the overflow well water outlet pipeline 7, and the overflow well water inlet pipeline 5 and the overflow well water outlet pipeline 7 are both provided with a water-hand-electricity dual-purpose opening and closing gate 11.
The water collecting tank 13 comprises a pump station water inlet manual and electric dual-purpose opening and closing gate 16 and a rectifying wall 17, the rectifying wall is provided with a plurality of water through holes 18, and the water through holes 18 are not limited to 900 mm multiplied by 1200 mm. A ventilation cap 19 and a manhole 20 are arranged above the water collecting tank 13, and the ventilation cap 19 is exposed out of the ground. The water collecting tank 13 is buried, so that the underground space is fully utilized, and the influence on the surrounding environment is reduced. The residence time of the water in the sump 13 is not limited to 5 min. The lifting pump chamber 14 is arranged beside the water collecting tank 13, the centrifugal pump 21 is arranged in the lifting pump chamber, the water collecting tank 13 and the centrifugal pump 21 are connected through a water suction pipe of the centrifugal pump, and the water outlet pipe is connected with the water supplementing comprehensive utilization system 3 through a water supplementing pipeline system 2. In the embodiment, the centrifugal pump 21 is a dry centrifugal pump, the number of the water through holes in the middle of the rectifying wall is the same as that of the centrifugal pumps, and the water through holes are spaced by the spacing distance between the corresponding centrifugal pumps, so that the average distribution of water quantity is fully considered, and the water flow is uniformly and regularly distributed stably. In order to reduce the scouring force on the wall body in water, secondary water passing holes with the diameter smaller than that of the water passing holes can be reserved on the two side edges of the rectification wall 17. The size of the pump station water inlet manual and electric dual-purpose opening and closing gate 16 is matched with that of the pump station water inlet pipe 8 and is positioned on the pump station water inlet pipe 8.
Particularly, the water inlet pipe 5 and the water outlet pipe 7 in the overflow well 6 are the same in height; the inlet height of the pump station water inlet pipe 8 is far lower than the water inlet and outlet pipes of the overflow well and the pump station pump stop water level; the weir top of the overflow weir 12 is higher than the elevation of the water inlet pipe 5 and the water outlet pipe 7. The height of the pump station water inlet pipe 8 is reduced, so that the deep burying of the pipeline is fully considered, and the one-time investment of pipeline encapsulation and the like is saved; meanwhile, the water level of the starting pump is not higher than the elevation of the water outlet of the sewage treatment plant, so that the water level differential pressure is fully utilized to reach the starting and stopping water level of the pump, the soil covering depth of a water collecting pool of the pump station is saved, and the one-time investment is reduced.
The comprehensive water replenishing utilization system 3 comprises four water utilization modes, including an upstream water replenishing port 22 of a river channel, an artificial wetland 24, a small lake pond reservoir 23 and a reserved late stage water replenishing interface 25, final effluent of the artificial wetland 24 and the small lake pond reservoir 23 is connected to the river channel through a pipeline, and the pipe network of the comprehensive water replenishing utilization system 2 and the small lake pond reservoir 23 are respectively provided with the reserved late stage water replenishing interface 25. Wherein, the inlet and outlet of the artificial wetland 24 and the small lake reservoir 23 are additionally provided with gate wells for controlling the inlet and outlet of water, and the gate wells are used as water quality monitoring ports for periodically detecting the water quality and allowing the water to enter the river channel after judging that the water quality is not polluted. And a flow and pressure regulating well 35 is arranged at the position of the river channel exit point.
The rainwater storage system 4 comprises a rainwater water storage module, rainwater flows through the sludge discarding well 27 to the rainwater water storage module 26, and the rainwater storage system can also be divided into three 3 water utilization modes, namely water replenishing for the upstream water replenishing port 22 of the river channel, the artificial wetland 24 and the small lake reservoir 23. Specifically, the rainwater storage module 26 is a PP storage module buried underground, and a sediment blocking net 28 is arranged in the sediment drainage well 27 to further remove impurities. The silt-settling and flow-discarding well 27 is provided with a valve 32 for a rainwater outlet pipe leading to the PP water storage module to control the use of the water storage module 26, the silt-settling and flow-discarding well 27 is also provided with a flow-discarding pipe 30, when the water storage module reaches the maximum water storage capacity, the valve 32 is closed, and rainwater overflows from the flow-discarding pipe 30 to the original rainwater system; the slag blocking net 28 is positioned below the outlet 31 of the rainwater inlet pipe, and the drainage pipe 30 is higher than the rainwater outlet pipe. Thus, when the maximum water storage capacity of the water storage module 26 is reached, the rainwater will overflow from the drainage pipe 30 back to the original rainwater system. Particularly, the slag blocking net 28 can be lifted out of the mud settling and discarding well through the arranged chains, so that workers can clean the mud settling and discarding well conveniently.
The ecological water replenishing system of the embodiment is provided with a manual-electric dual-purpose opening and closing gate for water inlet and outlet of the overflow well water outlet system, water inlet of the collecting tank and water inlet of the sediment flow discarding well 27, and is used for executing a water replenishing control strategy of ecological water replenishing monomers. And a flow and pressure regulating well 35 is arranged at the river inlet of the upstream river channel, the artificial wetland 24 and the water inlet of the small pond reservoir 23 and is used for executing a regulating strategy of the water quantity and the water pressure required by the water replenishing area. The effluent of the artificial wetland 24 and the small lake pond reservoir 23 are provided with gates and water quality monitoring ports for executing an ecological water replenishing and water quality control strategy.
The water outlet pipe network of the water supply pipeline system 2 adopts a main system to form an annular pipeline, and the branch system adopts an arrangement mode that a branch pipe network flows into each outlet. The pipe diameter passes through the moisturizing volume of moisturizing volume and passes through hydrodynamic force simulation, adopts the design of view minimum water demand after to consider that redundant design combines the lift to carry out the pipe network adjustment and provide the best scheme for pipe network system design.
The ecological water supplementing method of the embodiment comprises the following steps:
closing the valve well 10, discharging effluent treated by the urban sewage treatment plant built near the downstream of the river channel to a water collecting tank 13 of a pump station 9 preferentially through an overflow well 6, lifting water in the water collecting tank 13 to a water replenishing pipeline system 2 through a centrifugal pump 21 in a lifting pump chamber 14, conveying the water by the water replenishing pipeline system 2 to a water replenishing comprehensive utilization system 3, regulating water flow in the water replenishing comprehensive utilization system 3 through a flow regulating and pressure regulating valve, and finally, water in an upstream water replenishing port 22 of the river channel, an artificial wetland 24 and a small lake pool 23 flows into the artificial wetland 24 and the small lake pool 23 and finally flows into the river channel;
when the water replenishing system has a fault or the overflow well is overhauled or water replenishing is not needed, the water-hand-electric dual-purpose opening and closing gate 11 leading to the overflow well 6 is closed, tail water of the water quality purification plant is directly discharged to the downstream of a river channel through the gate well 10, and the phenomenon that the tail water is not smoothly discharged to cause waterlogging is avoided;
Under the condition that the water outlet quantity of a water quality purification plant is far greater than the ecological water replenishing water demand quantity, opening a manual-electric dual-purpose opening and closing gate 11 on an overflow well water outlet pipeline 7, and allowing the redundant water quantity to enter the downstream of a straight-discharge river channel through overflow;
under the condition of emergency water shortage of the river channel, ecological water supplement of the pump station 9 is directly discharged to the upstream of the river channel through gate control, if the pollution concentration of the area is increased after local rain or sudden pollution accidents occur, water can intensively flow to a key pollution area, and the water volume and the water pressure of a system passing through the area are increased to the maximum through controlling a flow regulating and pressure regulating valve. The concentration of pollutants is effectively reduced; the water quality improvement time is shortened;
when the water shortage of the river is relieved, the water replenishing of the river is divided into two paths, one path of water is directly replenished to the upstream of the river, the other path of water is transited through the artificial wetland 24 or the small lake pond 23 and is finally discharged to the upstream of the river, and the water replenishing of the artificial wetland 24, the small lake pond 23 and the river is realized at the same time;
when the water quality of the water plant is unstable and the discharge of water flow cannot be prevented, the valve 35 flowing into the upstream of the river channel is closed, the water flows into the artificial wetland 24 or the small lake pond 23, is purified by water quality plants, flows into the river channel after being detected by tail water of the small lake pond 23 and the artificial wetland 24, and improves the water quality of the river.
When the ecological water supplement of the pump station 9 can not meet the water supplement of the river channel, the water storage of the rainwater storage system 4 is called to supplement water 22 to the upstream water supplement port through the control of the pipeline gate, and under the condition of surplus water, if the artificial wetland 24 and the small lake reservoir 23 also need to supplement water, the water storage of the rainwater storage system 4 also supplements water to the artificial wetland 24 or the small lake reservoir 23. Rainwater enters a silt abandoning well 27, impurities are removed through a slag blocking net 28, silt is precipitated, a valve in the well 27 is opened, the rainwater overflows into a PP water storage module 4 for water storage, when the water storage module 4 is full, the rainwater overflows into an original rainwater system through the silt abandoning well, the valve in the well can also be closed, the water storage module 4 is kept full of water, and when emergency water supplement is needed, a water outlet channel is opened for emergency water supplement; avoiding long-term deposition of water, and opening the inlet and outlet valve to change water in the module after a period of time and in rainy season.
The water outlet of the PP water storage module 4 can be controlled by arranging a valve well behind the PP water storage module 4 to control the water outlet of the PP water storage module 4, the water inlet and outlet modes can be set to be electric or manual, and the method can be automatically switched according to needs. The control can also be carried out by a control cabinet matched with the PP water storage module 4, the method needs electricity, and the control mode can be selected by combining the local situation.
It should be noted that the above describes examples of the invention. However, it will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are merely illustrative of the principles of the present invention, but that various changes and modifications may be made without departing from the scope of the invention, which is defined by the appended claims.
Claims (10)
1. The utility model provides an ecological water charging system of rain-source river which characterized in that: comprises a water intake system (1) of a water plant, a water replenishing pipeline system (2), a water replenishing comprehensive utilization system (3) and a rainwater storage system (4); the water intake system (1) of the water plant comprises an overflow well water outlet system and a gate well water outlet system which are arranged in parallel; the main path of the overflow well water outlet system is that the outlet water of an overflow well (6) is connected with a pump station through a pump station water inlet pipe (8), the pump station contains a water collecting pool (13) and a lifting pump chamber, and water flow lifts the water of the water collecting pool to a water replenishing pipeline system (2) through a lifting pump; the auxiliary road is used for connecting tail water of an overflow well water outlet system and a gate well water outlet system to a river channel directly through a pipeline beside the main road; the comprehensive water replenishing utilization system (3) comprises four water utilization modes, including a riverway upstream water replenishing port (22), an artificial wetland (24), a small lake pond reservoir (23) and a reserved late stage water replenishing interface (25), the final effluent of the artificial wetland (24) and the small lake pond reservoir (23) is connected to a riverway through a pipeline, and the water replenishing pipeline system (2) and the small lake pond reservoir (23) are respectively provided with the reserved late stage water replenishing interface (25);
The rainwater storage system (4) comprises a rainwater storage module, rainwater flows through the sludge discarding well (27) to the rainwater storage module (26), and the rainwater storage system (4) can also be divided into three 3 water utilization modes, namely water replenishing for an upstream water replenishing port (22) of a river channel and water replenishing for a small lake reservoir (23) of an artificial wetland (24);
the ecological water supplementing system is provided with a manual-electric dual-purpose opening and closing gate for water inlet and outlet of an overflow well water outlet system, water inlet of a collecting basin and water inlet of a silt abandoning well (27) and is used for executing a water supplementing control strategy of ecological water supplementing monomers;
a flow and pressure regulating well (35) is arranged at an upstream river inlet of the river channel and water inlets of the artificial wetland (24) and the small pond reservoir (23) and is used for executing a regulating strategy of water quantity and water pressure required by a water replenishing area;
the outlet water of the artificial wetland (24) and the small lake pond (23) are provided with a gate and a water quality monitoring port for executing an ecological water replenishing and water quality control strategy.
2. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the water quality standard of the water intake system (1) of the water plant is not lower than the IV-class standard of surface water.
3. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the water outlet pipeline (5) of the water plant is divided into two paths which are respectively connected with the water outlet system of the overflow well and the water outlet system of the gate; the outlet water of the gate water outlet system directly enters the rear end of the original tail water discharge pipeline system; the overflow well water outlet system is provided with an overflow well (6), one side of the overflow well (6) is an overflow well water outlet pipeline (7) which flows into the raw tail water discharge system, the other side of the overflow well (6) flows into the water collecting tank (13) through a pump station water inlet pipe (8), the overflow well (6) is provided with an overflow weir (12),
The overflow weir (12) is close to the overflow well water outlet pipeline (7), and the water inlet pipeline and the overflow well water outlet pipeline (7) are both provided with a water-electricity-hand dual-purpose opening and closing gate (11).
4. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the collecting tank (13) comprises a pump station water inlet manual and electric dual-purpose opening and closing gate (16) and a rectifying wall (17), the rectifying wall is provided with a water through hole (18), and a ventilation cap (19) and a manhole (20) are arranged above the collecting tank (13);
the water collecting tank is provided with the lifting pump chamber (14), the lifting pump chamber is provided with a centrifugal pump (21), the water collecting tank and the centrifugal pump are connected through a water suction pipe of the centrifugal pump (21), and the water outlet pipe is connected with the water supplementing comprehensive utilization system (3) through a water supplementing pipeline system (2).
5. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the artificial wetland (24) and the small lake pond (23) are additionally provided with gate wells at water inlets and water outlets to control the water inlet and the water outlet, and the gate wells are used as water quality monitoring ports to periodically detect the water quality and can enter a river channel after judging that the water quality is not polluted.
6. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: a flow and pressure regulating well (35) is arranged at the position of the river channel connection and exit point.
7. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the rainwater storage module adopts a PP (polypropylene) water storage module (26), the PP water storage module (26) is buried underground, a sediment blocking net (28) is arranged in a mud settling and discarding well (27) to further remove impurities, the mud settling and discarding well (27) is provided with a valve (32) for a rainwater outlet pipe (29) leading to the PP water storage module (26) to control the use of the water storage module (26), the mud settling and discarding well (27) is also provided with a discarding flow pipe (30), when the water storage module reaches the maximum water storage capacity, the valve (32) is closed, and rainwater overflows from the discarding flow pipe (30) and returns to an original rainwater system; the slag blocking net (28) is located below an outlet (31) of the rainwater inlet pipe, and the flow abandoning pipe (30) is higher than the rainwater outlet pipe (29).
8. The ecological water replenishing system for the rain-derived river according to claim 3, wherein: the water inlet pipe and the water outlet pipe (7) in the overflow well (6) are at the same height; the inlet height of the pump station water inlet pipe (8) is far lower than the water inlet and outlet pipe of the overflow well and the pump station pump-stopping water level; the top of the weir of the overflow weir (12) is higher than the elevation of the water inlet pipe and the water outlet pipe (7).
9. The ecological water replenishing system for the rain-derived river according to claim 1, wherein: the water outlet pipe network of the water supply pipeline system (2) adopts a main system to form an annular pipeline, and the branch system adopts an arrangement mode that a branch pipe network flows into each outlet.
10. The ecological water replenishing system for the rain-derived river according to claim 1, wherein:
effluent water treated by an urban sewage treatment plant built near the downstream of a river channel is preferentially discharged to a pump station (9) through an overflow well (6), is lifted to a water replenishing pipeline system (2) through the pump station (9), finally reaches a water replenishing comprehensive utilization system (3), and reaches a water replenishing port (22) at the upstream of the river channel, an artificial wetland (24) and a small lake pond reservoir (23);
when a water replenishing system fails or an overflow well is overhauled or water replenishing is not needed, the manual-electric dual-purpose opening and closing gate (11) leading to the water of the overflow well is closed, and tail water of the water quality purification plant is directly discharged to the downstream of a river channel through the gate well (10);
under the condition that the water yield of the water quality purification plant is far greater than the ecological water replenishing water demand, opening a manual and electric dual-purpose opening and closing gate (11) on an overflow well water outlet pipeline (7), and allowing the excess water to enter the downstream of a direct discharge river channel through overflow;
Under the condition of emergency water shortage of the river channel, ecological water supplement of a pump station (9) is directly discharged to the upstream of the river channel through gate control;
when the water shortage of the riverway is relieved, the water replenishing of the riverway is divided into two paths, one path of water is directly replenished to the upstream of the riverway, the other path of water is transited through the artificial wetland (24) or the small lake pond (23) and is finally discharged to the upstream of the riverway, and the water replenishing of the artificial wetland (24), the small lake pond (23) and the riverway is realized at the same time;
when ecological water supplement of the pump station (9) cannot meet the water supplement of a river channel, water storage of the rainwater storage system (4) is called to supplement water to the upstream water supplement port (22) through control of the pipeline gate, and if the artificial wetland (24) and the small lake reservoir (23) need to supplement water under the condition of surplus water, the water storage of the rainwater storage system (4) also supplements water to the artificial wetland (24) or the small lake reservoir (23).
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| CN112323718A (en) * | 2020-12-11 | 2021-02-05 | 中国电建集团昆明勘测设计研究院有限公司 | Water comprehensive circulation system of ecological sponge city |
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| CN112196016A (en) * | 2020-09-25 | 2021-01-08 | 天津大学 | Ecological water replenishing scheduling system and method applied to small and medium river channels |
| CN112323718A (en) * | 2020-12-11 | 2021-02-05 | 中国电建集团昆明勘测设计研究院有限公司 | Water comprehensive circulation system of ecological sponge city |
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