CN113216074A - Coastal city river water treatment method - Google Patents
Coastal city river water treatment method Download PDFInfo
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- CN113216074A CN113216074A CN202110524778.2A CN202110524778A CN113216074A CN 113216074 A CN113216074 A CN 113216074A CN 202110524778 A CN202110524778 A CN 202110524778A CN 113216074 A CN113216074 A CN 113216074A
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 274
- 238000000034 method Methods 0.000 title claims abstract description 41
- 238000007599 discharging Methods 0.000 claims abstract description 13
- 239000010865 sewage Substances 0.000 claims description 50
- 238000002955 isolation Methods 0.000 claims description 11
- 239000004575 stone Substances 0.000 claims description 6
- 238000000746 purification Methods 0.000 claims description 5
- 238000010276 construction Methods 0.000 claims description 4
- 239000004576 sand Substances 0.000 claims description 4
- 239000008213 purified water Substances 0.000 claims description 3
- 239000010802 sludge Substances 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 abstract description 5
- 230000008859 change Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 230000002349 favourable effect Effects 0.000 description 12
- 238000001556 precipitation Methods 0.000 description 8
- 230000010354 integration Effects 0.000 description 7
- 239000002689 soil Substances 0.000 description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000002699 waste material Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000013505 freshwater Substances 0.000 description 3
- 239000013535 sea water Substances 0.000 description 3
- 241000894006 Bacteria Species 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000003911 water pollution Methods 0.000 description 2
- 230000003796 beauty Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000012010 growth Effects 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 210000000438 stratum basale Anatomy 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02B—HYDRAULIC ENGINEERING
- E02B1/00—Equipment or apparatus for, or methods of, general hydraulic engineering, e.g. protection of constructions against ice-strains
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F3/00—Biological treatment of water, waste water, or sewage
- C02F3/32—Biological treatment of water, waste water, or sewage characterised by the animals or plants used, e.g. algae
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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
-
- 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
- E02B3/04—Structures or apparatus for, or methods of, protecting banks, coasts, or harbours
- E02B3/12—Revetment of banks, dams, watercourses, or the like, e.g. the sea-floor
-
- 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
- E02B7/02—Fixed barrages
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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
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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
- E03B—INSTALLATIONS OR METHODS FOR OBTAINING, COLLECTING, OR DISTRIBUTING WATER
- E03B3/00—Methods or installations for obtaining or collecting drinking water or tap water
- E03B3/32—Methods or installations for obtaining or collecting drinking water or tap water with artificial enrichment, e.g. by adding water from a pond or a river
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/007—Contaminated open waterways, rivers, lakes or ponds
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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
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/11—Hard structures, e.g. dams, dykes or breakwaters
-
- 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
- Y02A20/108—Rainwater harvesting
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Abstract
The invention relates to the technical field of river water treatment methods, and particularly discloses a coastal city river water treatment method, which comprises the following steps: establishing a water storage reservoir; adjusting the water flow of the riverway of the coastal city according to the changes of the flood season and the dry season; if the river course is in the flood season and the water flow in the river course is large, discharging the water in the river course into a water storage warehouse through a flood discharge pipe; and if the water flow in the river channel is small in the dry period, the water in the water storage is supplied into the river channel through the water return pipe. According to the method for treating the river channel water of the coastal city, the water storage is built, and the water flow of the river channel of the coastal city is adjusted according to the change of the flood season and the dry season, so that the problems that the ecological environment of the river channel is fragile, the river channel is easy to pollute and the self-cleaning capacity is reduced due to uneven water source allocation in the flood season and the dry season are solved; the step-shaped riverbed is beneficial to water retention and storage of water in the river, a beautiful riverway environment is built, and the problem that the whole riverway is exposed outside in a dry season to cause unattractive appearance is solved.
Description
Technical Field
The invention relates to the technical field of a coastal city river water treatment method, in particular to a coastal city river water treatment method.
Background
The problems of concentrated rainfall, shortage of fresh water resources and the like generally exist in island regions; in the flood season, precipitation in coastal cities is abundant, most of the precipitation is not utilized and is injected into the ocean in the form of flood, and part of the river channels are not communicated, so that the phenomenon of independent inflow to the ocean is caused; in the dry season, river channels in coastal cities are relatively short of water resources, the water body mobility is poor, the water pollution is serious, and the problem of water pollution is aggravated because part of the river channels are not communicated; in order to ensure the flood-carrying function of the riverway in coastal cities, the bank body is generally constructed higher, people cannot be hydrophilic in a short distance, and the whole riverway is exposed outside in a dry season and is extremely unattractive.
River channels in coastal cities are mostly seasonal intermittent rivers, the ecological environment of the river channels is fragile due to uneven water source allocation in flood seasons and dry seasons, the river channels are easily polluted, the self-cleaning capacity is reduced, and landscape facilities arranged around the river channels are damaged to a certain extent.
Aiming at the problems, the invention provides a method for treating river water in coastal cities.
Disclosure of Invention
Technical problem to be solved
The invention aims to solve the problem that the river channel water treatment method for coastal cities can solve the problems that the ecological environment of the river channel is fragile, the river channel is easy to be polluted and the self-cleaning capacity is reduced due to uneven water source allocation in flood season and dry season, and the problem that the whole river channel is exposed outside in the dry season to cause poor beauty is solved by repairing the river bed.
(II) technical scheme
The technical scheme adopted by the invention for solving the technical problems is as follows: a method for treating riverway water of coastal cities, comprising the following steps:
establishing a water storage reservoir;
adjusting the water flow of the riverway of the coastal city according to the changes of the flood season and the dry season;
if the river course is in the flood season and the water flow in the river course is large, discharging the water in the river course into a water storage warehouse through a flood discharge pipe;
if the water flow in the river channel is small in the dry period, water in the water storage is supplied to the river channel through the water return pipe;
the water return pipe is connected with integrated sewage treatment equipment, and purified water in the integrated sewage treatment equipment flows back to the river channel through the water return pipe.
In the scheme, the river channel is communicated through the flood discharge pipe, so that redundant water in the river channel in the flood season is collected into the water storage warehouse through the flood discharge pipe to be stored, and the problem that most of precipitation is not utilized to inject the precipitation into the sea in a flood form and the phenomenon that part of the river channel is not communicated with each other to cause the precipitation to flow into the sea alone are effectively avoided.
The sewage integrated treatment equipment recovers and purifies sewage, conveys the treated water to a river channel through a water return pipe, and supplies river water to the dry river channel and the non-circulating river channel in the dry water period.
Preferably, the method for treating the riverway water of the coastal city further comprises the step-shaped riverbed construction, wherein a water retaining dam is arranged at each step junction of the step-shaped riverbed; aquatic plants are planted on the stepped riverbed.
In the scheme, the rapid water flow intercepted by the water retaining dam forms a plurality of slow flow areas, the water return area is increased, the water surface is widened, and the ornamental value of the river channel is enhanced; the water level in river course, the flow of regulation river course and be favorable to the flood control are effectively raised in the setting of retaining dam, make things convenient for the retaining to improve the problem that the dry season river course exposes outside, and aquatic plant's cooperation is favorable to improving river course ecological environment in addition.
Preferably, each level structure of the stepped riverbed is sequentially provided with a basal layer, a sludge isolation layer, a soil and stone isolation layer and a sand layer from bottom to top.
In the above scheme, flood discharge pipe and wet return all bury in the basement layer, and silt isolation layer and soil stone isolation layer carry out isolation protection to flood discharge pipe and wet return, and the special construction of cascaded riverbed each grade has built aquatic plant growth matrix, plants aquatic plant on cascaded riverbed, and existing river course ecological environment that is favorable to improving is favorable to building graceful river channel environment again, still is favorable to improving the problem that the dry season river course exposes outside.
After the water retaining dam falls, a large amount of water splash is splashed out of river water, the contact area of oxygen and water is increased, the content of dissolved oxygen in the water body is also increased, and the water quality improvement process is promoted; meanwhile, waterfall is formed, and audio-visual landscape is enriched.
Preferably, the establishing of the water storage reservoir comprises establishing an offshore water storage reservoir at a sea entrance of a river channel of a coastal city and deeply digging to establish a pond reservoir on the basis of an original pond, wherein the pond reservoir is communicated with the river channel.
In the scheme, the mountain pond reservoir is used for collecting precipitation in flood season, so that the probability of flood disasters is effectively reduced, the offshore reservoir is favorable for collecting redundant water resources in a river channel in the flood season through the flood discharge pipe, and water resource waste caused by the fact that seawater directly flows into the sea is avoided; when the river channel is short of water in the dry season, the water in the hill pond reservoir and the water in the sea reservoir are supplied to the river channel through the water return pipe.
Preferably, the water flow of the coastal city riverway is adjusted according to the change of the flood season and the dry season, and the method comprises the steps of arranging a flood discharge pipe along the riverway in the coastal city riverway, wherein the flood discharge pipe is communicated with the offshore reservoir;
and if the water flow in the river channel is large in the flood season, discharging the water in the river channel into the offshore water storage tank through the flood discharge pipe.
Preferably, the flood discharge pipe is provided with a plurality of flood discharge nodes, and each flood discharge node is provided with a flood discharge port for discharging water and a flood discharge valve for controlling the flood discharge port; the flood discharge pipe penetrates through the river channel to communicate the river channel, and the flood discharge port is located in the river channel, so that the river channel is communicated with the flood discharge pipe.
When rainfall is excessive in the flood season, the flood discharge valve is opened, so that redundant water in the river channel enters the flood discharge pipe through the flood discharge port and finally enters the sea water storage tank to be collected and stored.
Preferably, the water flow of the coastal city riverway is adjusted according to the change of the flood season and the dry season, and the method comprises the steps of arranging a water return pipe along the riverway in the coastal city riverway, wherein the water return pipe is communicated with the offshore reservoir and the pond reservoir;
if the river course is in a dry season and the water flow in the river course is small, the water in the offshore reservoir and the pond reservoir is supplied into the river course through the water return pipe, so that the water flow flowing into the river can be conveniently and quantitatively controlled, and the flow speed of the river course are maintained at relatively stable values.
Preferably, the water flow of the riverway of the coastal city is adjusted according to the changes of the flood season and the dry season, a sewage pipeline is arranged underground the coastal city, a sewage integrated treatment device is arranged at the collection position of the sewage pipeline and the water return pipe, a water inlet pipe of the sewage integrated treatment device is connected with the sewage pipeline, and a water outlet pipe of the sewage integrated treatment device is connected with the water return pipe;
the water in the sewage pipeline enters the sewage integrated treatment equipment for purification, the treated water is conveyed into a river channel through the water return pipe, and river water is supplied to the dry river channel and the non-circulating river channel in the dry period; if the flood season is, the sewage integrated treatment equipment directly discharges the treated water into the river.
Wherein, flood discharge pipe, wet return and sewer line reposition of redundant personnel drainage, the rainwater directly falls into the river course and unified flood discharge pipe that flows into the river bottom, the flood discharge pipe is directly discharged into the sea again the rainwater of collecting, this kind of mode makes to discharge the rainwater into the sea fast high-efficiently, effectively reduce the flow of flood season river water, thereby avoid taking place that the river breaks the dike and overflows, arouse the flood disaster, and make the rainwater can not receive the pollution of sewage, thereby just can directly discharge into the river through the processing, the work load of the integrated sewage treatment device of rainy season flood season is dwindled greatly.
Sewage integration treatment facility and retaining dam cooperate, and the rapid rivers that intercept through the retaining dam have formed a plurality of slow flows region, and the slow flow region has provided the detention place of circling round for the water after sewage integration treatment facility handles, and the time that the extension water is detained has increased the chance that water and aquatic plant and the submarine attached to the bacterium contact, has reached better water purification effect.
Preferably, the water return pipe is provided with a plurality of water return nodes, and each water return node is provided with a water return port for supplying a river channel and a water return valve for controlling the water return port; the water return pipe also penetrates through the river channel, and the water return opening is located in the river channel, so that the river channel is communicated with the water return pipe.
Wherein, when the river course is withered in dry season, open the return water valve for sewage integration treatment facility department carries out the river water supply in entering into the river course through the return water mouth of wet return pipe through the sewage of processing, and marine cistern carries out the river water supply through the return water mouth of wet return pipe to the river course.
Preferably, the inner diameter of the flood discharge pipe is larger than the pipe diameter of the water return pipe; the rainwater is rich in flood season, the flood flow is large, rainwater and flood are discharged through the flood discharge pipe, and the pipeline with the large inner diameter can effectively discharge flood to the river channel in time.
(III) advantageous effects
1. According to the method for treating the river channel water of the coastal city, provided by the invention, the water storage is established and the water flow of the river channel of the coastal city is adjusted according to the changes of the flood season and the dry season, so that the problems that the ecological environment of the river channel is fragile, the river channel is easy to pollute and the self-cleaning capacity is reduced due to uneven water source allocation in the flood season and the dry season are solved; the step-shaped riverbed is beneficial to water retention and storage of water in the river, a beautiful riverway environment is built, and the problem that the whole riverway is exposed outside in a dry season to cause unattractive appearance is solved.
2. According to the method for treating the river channel water in the coastal city, provided by the invention, when the rainfall flow in a flood season is larger, the mountain pond reservoir and the offshore reservoir in the reservoir are established to collect and store the rainwater, and the redundant river water and the flood in the river channel are discharged into the offshore reservoir through the special structure of the flood discharge pipe, so that the flood discharge is carried out on the river channel on one hand, the ecological environment of the river channel is favorably maintained, and on the other hand, the waste of fresh water resources caused by the fact that the river water is directly discharged into the sea is avoided.
3. The invention provides a method for treating riverway water in coastal cities, wherein in a dry season, when the riverway water flow of the riverway is small or even dry, river water is replenished to the riverway by discharging water from a pond reservoir, river water is replenished to the riverway by matching sewage integrated treatment equipment and a water return pipe, and river water is replenished to the riverway by matching an offshore reservoir and the water return pipe.
Drawings
FIG. 1 is a functional block diagram of the present invention;
FIG. 2 is a schematic view of the operation of the flood discharge pipe of the present invention;
FIG. 3 is a schematic view of the operation principle of the water return pipe of the present invention;
FIG. 4 is a schematic view of the cross-sectional structure of the riverbed of the present invention;
fig. 5 is a schematic view of the sectional structure of the stepped riverbed of the present invention.
Wherein: 1 flood discharge pipe, 2 water return pipes, 3 step type riverbeds, 31 water retaining dams, 32 basal layers, 33 sludge isolation layers, 34 soil and stone isolation layers, 35 sand layers and 36 aquatic plants.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Referring to fig. 1 to 5, the present invention provides the following technical solutions: a method for treating riverway water of coastal cities, comprising the following steps:
establishing a water storage reservoir;
adjusting the water flow of the riverway of the coastal city according to the changes of the flood season and the dry season;
if the water flow in the river channel is large in the flood season, discharging the water in the river channel into a water storage warehouse through a flood discharge pipe 1;
if the water flow in the river channel is small in the dry season, water in the water storage reservoir is supplied to the river channel through the water return pipe 2;
the water return pipe 2 is connected with a sewage integrated treatment device, and purified water in the sewage integrated treatment device flows back to a river channel through the water return pipe 2.
In the above scheme, the river channel is communicated through the flood discharge pipe 1, so that redundant water in the river channel in the flood season is collected into the water storage warehouse through the flood discharge pipe 1 for storage, and the problem that most of precipitation is not utilized so as to be injected into the sea in a flood form and the phenomenon that part of the river channel is not communicated with each other to cause independent inflow of the water into the sea are effectively avoided.
The sewage integrated treatment equipment recovers and purifies sewage, conveys the treated water into a river channel through the water return pipe 2, and supplies river water to the dry river channel and the non-circulating river channel in the dry water period.
Referring to fig. 4-5, the method for treating riverway water in coastal cities further comprises building a stepped riverbed 3, wherein a retaining dam 31 is arranged at each step junction of the stepped riverbed 3; aquatic plants 36 are planted on the stepped riverbed 3.
In the scheme, the rapid water flow intercepted by the water retaining dam 31 forms a plurality of slow flow areas, the water return area is increased, the water surface is widened, and the ornamental value of the river channel is enhanced; the water level in river course, the flow of regulation river course and be favorable to the flood control are effectively raised in the setting of retaining dam 31, make things convenient for the retaining to improve the problem that the dry season river course exposes outside, and aquatic plant 36's cooperation is favorable to improving river course ecological environment in addition.
Each level structure of the stepped riverbed 3 is sequentially provided with a basal layer 32, a silt isolating layer 33, a soil and stone isolating layer 34 and a sand layer 35 from bottom to top.
In the above scheme, flood discharge pipe 1 and wet return 2 are all buried in stratum basale 32, protection is kept apart to flood discharge pipe 1 and wet return 2 to silt isolation layer 33 and soil stone isolation layer 34, and the special construction of 3 each grades of cascaded riverbed has built the growth matrix of aquatic plant 36, plant aquatic plant 36 on cascaded riverbed 3, existing river course ecological environment that does benefit to improves, be favorable to building graceful river course environment again, still be favorable to improving the problem that the dry season river course exposes outside.
After the water retaining dam 31 falls, a large amount of water splash is splashed out of river water, the contact area of oxygen and water is increased, the content of dissolved oxygen in the water body is also increased, and the water quality improvement process is promoted; meanwhile, waterfall is formed, and audio-visual landscape is enriched.
The establishment of the water storage reservoir comprises the steps of establishing an offshore water storage reservoir at a sea entrance of a riverway of a coastal city and deeply digging to establish a pond reservoir on the basis of an original pond, wherein the pond reservoir is communicated with the riverway.
In the scheme, the mountain pond reservoir is used for collecting precipitation in flood season, so that the probability of flood disasters is effectively reduced, the offshore reservoir is favorable for collecting redundant water resources in a river channel in the flood season through the flood discharge pipe 1, and water resource waste caused by the fact that seawater directly flows into the sea is avoided; when the river channel is short of water in the dry season, the water in the mountain pond reservoir and the water in the sea reservoir are supplied to the river channel through the water return pipe 2.
Referring to fig. 1, the adjusting of the water flow of the coastal city riverway according to the flood season and the dry season includes arranging a flood discharge pipe 1 along the riverway in the coastal city riverway, wherein the flood discharge pipe 1 is communicated with the offshore reservoir;
and if the river course is in the flood season and the water flow in the river course is large, discharging the water in the river course into the offshore water storage tank through the flood discharge pipe 1.
Referring to fig. 2, the flood discharge pipe 1 is provided with a plurality of flood discharge nodes, and each flood discharge node is provided with a flood discharge port for discharging water and a flood discharge valve for controlling the flood discharge port; flood discharge pipe 1 passes the river course, and with the river course intercommunication, flood discharge mouth is located the river course for the river course with flood discharge pipe 1 is linked together.
Wherein, when rainfall is too much in flood season, open the valve of discharging flood for unnecessary water in the river course crosses the flood discharge mouth and enters into the pipe 1 of discharging flood and finally enters into the marine cistern and collects the deposit.
Referring to fig. 3, the adjusting of the water flow of the coastal city riverway according to the flood season and the dry season includes arranging a water return pipe 2 along the riverway in the coastal city riverway, wherein the water return pipe 2 is communicated with the offshore reservoir and the pond reservoir;
if the river course is in a dry season and the water flow in the river course is small, the water in the offshore reservoir and the pond reservoir is supplied into the river course through the water return pipe 2, so that the water flow flowing into the river can be conveniently controlled quantitatively, and the flow speed of the river course are maintained at relatively stable values.
The method comprises the steps of adjusting the water flow of a riverway of a coastal city according to the changes of flood season and dry season, arranging a sewage pipeline underground the coastal city, arranging integrated sewage treatment equipment at the convergence position of the sewage pipeline and a water return pipe 2, connecting a water inlet pipe of the integrated sewage treatment equipment with the sewage pipeline, and connecting a water outlet pipe of the integrated sewage treatment equipment with the water return pipe 2;
the water in the sewage pipeline enters the sewage integrated treatment equipment for purification, the treated water is conveyed into a river channel through the water return pipe 2, and river water is supplied to the dry river channel and the non-circulating river channel in the dry period; if the flood season is, the sewage integrated treatment equipment directly discharges the treated water into the river.
Wherein, flood discharge pipe 1, wet return 2 and sewer line reposition of redundant personnel drainage, the rainwater directly falls into the river course and unified flood discharge pipe 1 that flows into the river bottom, and flood discharge pipe 1 directly discharges the rainwater of collecting into the sea again, and this kind of mode makes will high-efficiently discharge the rainwater into the sea fast, effectively reduces flood season river water's flow, thereby avoid taking place that river levee is excessive, arouse flood disasters, and make the rainwater can not receive the pollution of sewage, thereby just can directly discharge into the river through the processing, the work load of rainy season flood season sewage integration treatment facility is dwindled greatly.
Sewage integration treatment facility and barrage 31 cooperate, and the rapid rivers of blocking through barrage 31 interception have formed a plurality of slow flow regions, and the slow flow region has provided the detention place of circling round for the water after sewage integration treatment facility handles, and the time that the extension water is detained has increased the chance that water and aquatic plant 36 and the submarine attached bacterium contact, has reached better water purification effect.
The water return pipe 2 is provided with a plurality of water return nodes, and each water return node is provided with a water return port for supplying a river channel and a water return valve for controlling the water return port; the water return pipe 2 also penetrates through the river channel, and the water return port is positioned in the river channel, so that the river channel is communicated with the water return pipe 2.
Wherein, when the river course is withered in dry season, open the return water valve for sewage integration treatment facility department carries out the river water supply in entering into the river course through the return water mouth of wet return 2 through the sewage of processing, and marine cistern carries out the river water supply through the return water mouth of wet return 2 to the river course.
The inner diameter of the flood discharge pipe 1 is larger than the pipe diameter of the water return pipe 2; wherein, flood season rainwater is abundant, and flood flow is great, gets rid of rainwater flood through flood discharge pipe 1, and the big pipeline of internal diameter can effectively in time carry out the flood discharge to the river course.
According to the invention, the water storage is established and the water flow of the riverway in the coastal city is adjusted according to the changes of the flood season and the dry season, so that the problems that the ecological environment of the riverway is fragile, the riverway is easily polluted and the self-cleaning capacity is reduced due to uneven water source allocation in the flood season and the dry season are solved; when the rainfall flow in the flood season is large, a pond reservoir and an offshore reservoir in the reservoir are built to collect and store rainwater, and redundant river water and flood in the river channel are discharged into the offshore reservoir through a special structure of a flood discharge pipe, so that the flood discharge is performed on the river channel on one hand, the ecological environment of the river channel is maintained, and on the other hand, the waste of fresh water resources caused by the fact that the river water is directly discharged into the sea is avoided; when the river flow of the river channel in the dry season is small or even dry, river water is replenished to the river channel through the discharged water of the pond reservoir, the river channel is replenished through the cooperation of the sewage integrated treatment equipment and the water return pipe, and the river channel is replenished through the cooperation of the offshore reservoir and the water return pipe; in addition, the step-shaped riverbed is favorable for water retention and storage of water in rivers, a beautiful riverway environment is built, and the problem that the whole riverway is exposed outside in a dry season to cause unattractive appearance is solved.
The above is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, it is possible to make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be considered as the protection scope of the present invention.
Claims (9)
1. A method for treating riverway water of coastal cities is characterized by comprising the following steps:
establishing a water storage reservoir;
adjusting the water flow of the riverway of the coastal city according to the changes of the flood season and the dry season;
if the river course is in a flood season and the water flow in the river course is large, discharging the water in the river course into a water storage warehouse through a flood discharge pipe (1);
if the water flow in the river channel is small in the dry season, the water in the water storage reservoir is supplied into the river channel through the water return pipe (2);
the water return pipe (2) is connected with integrated sewage treatment equipment, and purified water in the integrated sewage treatment equipment flows back to a river channel through the water return pipe (2).
2. The method for treating riverway water of the coastal city according to claim 1, wherein the method comprises the following steps: the method for treating the riverway water in the coastal city further comprises the step type riverbed (3) construction, a water retaining dam (31) is arranged at each step junction of the step type riverbed (3), and aquatic plants (36) are planted on the step type riverbed (3).
3. The method for treating riverway water of the coastal city according to claim 1, wherein the method comprises the following steps: the establishment of the water storage reservoir comprises the steps of establishing an offshore water storage reservoir at a sea entrance of a riverway of a coastal city and deeply digging to establish a pond reservoir on the basis of an original pond, wherein the pond reservoir is communicated with the riverway.
4. The method for treating riverway water of the coastal city according to claim 3, wherein the method comprises the following steps: the method comprises the steps that the water flow of the coastal city river channel is adjusted according to the changes of flood season and dry season, a flood discharge pipe (1) is arranged along the river channel in the coastal city river channel, and the flood discharge pipe (1) is communicated with the offshore reservoir;
and if the water flow in the river channel is large in the flood season, discharging the water in the river channel into the offshore reservoir through the flood discharge pipe (1).
5. The method for treating riverway water of the coastal city according to claim 3, wherein the method comprises the following steps: the method comprises the steps that a water return pipe (2) is arranged along a riverway in the coastal urban riverway, and the water return pipe (2) is communicated with an offshore reservoir and a pond reservoir;
if the river course is in a dry season and the water flow in the river course is small, water in the offshore reservoir and the pond reservoir is supplied into the river course through the water return pipe (2).
6. The method for treating riverway water of the coastal city according to claim 1, wherein the method comprises the following steps: the method comprises the steps of adjusting the water flow of a riverway of a coastal city according to the changes of flood seasons and dry periods, and further comprises the step of arranging a sewage pipeline underground the coastal city, wherein a sewage integrated treatment device is arranged at the collection position of the sewage pipeline and a water return pipe (2), the water inlet pipe of the sewage integrated treatment device is connected with the sewage pipeline, and the water outlet pipe of the sewage integrated treatment device is connected with the water return pipe (2);
and the water of the sewage pipeline enters the sewage integrated treatment equipment for purification, and the treated water is conveyed into a river channel through the water return pipe (2) to supply river water to the dry river channel and the non-circulating river channel in the dry water period.
7. The method for treating riverway water of the coastal city according to claim 4, wherein the method comprises the following steps: the flood discharge pipe (1) is provided with a plurality of flood discharge nodes, and each flood discharge node is provided with a flood discharge port for discharging water and a flood discharge valve for controlling the flood discharge port; the flood discharge pipe (1) penetrates through a river channel, and the flood discharge port is located in the river channel, so that the river channel is communicated with the flood discharge pipe (1).
8. The method for treating riverway water of the coastal city according to claim 5, wherein the method comprises the following steps: the water return pipe (2) is provided with a plurality of water return nodes, and each water return node is provided with a water return port for supplying a river channel and a water return valve for controlling the water return port; the water return pipe (2) also penetrates through the river channel, and the water return opening is located in the river channel, so that the river channel is communicated with the water return pipe (2).
9. The method for treating riverway water of coastal cities as claimed in claim 2, wherein each level of the stepped riverbed (3) is provided with a base layer (32), a sludge isolation layer (33), an earth and stone isolation layer (34) and a sand layer (35) from bottom to top.
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| CN202110524778.2A CN113216074A (en) | 2021-05-13 | 2021-05-13 | Coastal city river water treatment method |
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