CN110468776A - A kind of device of enhancing river subsurface flow exchange - Google Patents
A kind of device of enhancing river subsurface flow exchange Download PDFInfo
- Publication number
- CN110468776A CN110468776A CN201910763006.7A CN201910763006A CN110468776A CN 110468776 A CN110468776 A CN 110468776A CN 201910763006 A CN201910763006 A CN 201910763006A CN 110468776 A CN110468776 A CN 110468776A
- Authority
- CN
- China
- Prior art keywords
- river
- subsurface flow
- flow exchange
- low conductivity
- enhancing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/283—Treatment of water, waste water, or sewage by sorption using coal, charred products, or inorganic mixtures containing them
-
- 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
- E02B3/02—Stream regulation, e.g. breaking up subaqueous rock, cleaning the beds of waterways, directing the water flow
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/105—Phosphorus compounds
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/16—Nitrogen compounds, e.g. ammonia
Abstract
The invention discloses a kind of devices of enhancing river subsurface flow exchange, the device is mounted on the position of river bottom phreatic zone, including two pieces of front and back and river cross section baffle disposed in parallel, it placed high conductance structure and the low conductivity structure positioned at high conductance structure two sides in the baffle and two sides riverbank area defined, the low conductivity structure is the in-situ deposition object area filled using in-situ deposition object in other spaces in surrounded region between high conductance structure and baffle.The present invention is promoted water body flow to cause aggregate flow and divergent flow, is gushed to cause to gush under river water respectively in lower water by the installation of different conductivity structures, is increased undercurrent Flux, while promoting the decomposition to pollutant in water body, is played the role of purification.
Description
Technical field
The invention belongs to river ecosystem restoration and administer field, and in particular to a kind of device of enhancing river subsurface flow exchange.
Background technique
Modes for Urban Stormwater Runoff Pollution is important one of non-point pollution, have randomness, extensive type, hysteresis quality, not really
The features such as qualitative, the pollutants such as a large amount of suspended materials, nutriment, aerobic substance, bacterium import receiving water by rainwash
Body eventually enters into river lake and reservoir, causes the environmental problems such as water pollution.
Currently, being primarily intended to reduction storm flow for improvement urban non-point source pollution and having ignored and cut to pollutant
Subtract.Meanwhile the mainstream technology for polluted river channel to be administered includes the physical methods such as artificial aeration, Sediment Dredging, but it is mounted to
This height, operation and maintenance are difficult, while Sediment Dredging somewhat expensive, though can play preferable pollution treatment effect in a short time, it is broken
It is broken the original natural environment in river, it is at a specified future date low in economic efficiency；Chemical method includes enhanced flocculation, chemical oxidation and chemical precipitation
Deng, though significant effect causes various uncertain factors, easily causes the secondary dirt of water body since chemical substance is launched in the external world
Dye；Biological prosthetic includes phytoremediation, microorganism remediation etc., although river planting plants protect ecological environment not to be damaged,
But it hinders river course flood effect, buys hidden danger for urban safety, while the degradation effect of microorganism is then close with environmental factor
Cut phase is closed, and treatment effect is bad in most cases.
Phreatic zone is the natural biological reactor in a kind of streams that can handle non-point pollution.Riverbed and bank deposit
Object provides contact and longer dwell time between Redox Condition, solute and microorganism.This dynamic environment is to be permitted
More important biochemical reaction provides condition, reduces excessive pollutant in rainwash, therefore referred to as river liver
It is dirty.
To sum up, phreatic zone has the potentiality for mitigating the non-point pollution for threatening city streams, but limited flow and inefficient
Exchange usually will limit its water correction.Therefore, the Sediments in river are developed, enhancing river surface and ground water is handed over
Process is changed, is a kind of new approaches of pollution of harnessing a river.
Summary of the invention
In view of the above-mentioned problems, the present invention proposes a kind of device of enhancing river subsurface flow exchange.
It realizes above-mentioned technical purpose, reaches above-mentioned technical effect, the invention is realized by the following technical scheme:
A kind of device of enhancing river subsurface flow exchange, the device are mounted on the position of river bottom phreatic zone, including front and back
It placed high conduction in two pieces and river cross section baffle disposed in parallel, the baffle and two sides riverbank area defined
Rate structure and low conductivity structure positioned at high conductance structure two sides, the low conductivity structure are located at high conductance structure
It is the in-situ deposition object area filled using in-situ deposition object in other spaces in surrounded region between baffle.
As a further improvement of the present invention, the vertical height of the low conductivity structure is higher than the high conductance
Structure.
As a further improvement of the present invention, the in-situ deposition object area is located in the high conductance structure and institute
In the gap of groove area and the baffle and the low conductivity structure that the low conductivity structure stated is surrounded.
As a further improvement of the present invention, the top surface in the in-situ deposition object area and the low conductivity structure are neat
It is flat, and be located under the stream of surface.
It as a further improvement of the present invention, further include the impermeable stratum that bottom of device is set.
As a further improvement of the present invention, the device further includes clay layer, and the clay layer is laid with along riverbank,
It is parallel with water (flow) direction.
As a further improvement of the present invention, the baffle passes through perpendicular between dismountable mode and two sides riverbank
Setting.
As a further improvement of the present invention, the high conductance structure is constructed using concrete or megalith,
Voidage requires to be 0.01-0.05；The low conductivity structure is constructed using gravel, voidage 0.4-0.5.
As a further improvement of the present invention, it is also mixed with environment degradable biomass in the in-situ deposition object, wraps
Include sawdust or charcoal, voidage 0.3-0.4.
A kind of equipment of enhancing river subsurface flow exchange, including 10-15 devices discussed above is used into concatenated mode
It is mounted in river.
Beneficial effects of the present invention:
1. promoting water body flow to cause aggregate flow and divergent flow, to cause river respectively by the installation of different conductivity structures
It gushes and is gushed in lower water under water, increase undercurrent Flux.
2. deposit provides contact and longer dwell time between Redox Condition, solute and microorganism.This
Kind dynamic environment provides condition for many important biogeochemical reactions, promotes various pollutants matter sufficiently to react and says
Solution, reduces the pollutional load of receiving water body.
3. Sediments are not directly contacted with surface stream, variation will not be to river flow, sediment transport and aquatic life
Object, which is migrated, to be had an impact, and can prevent river degradation from structure being caused to change by the covering of natural sediment.Simultaneously using former
The material of position carries out structure building, maintains the status of natural environment to the maximum extent, avoids generating not local environment
Benefit influences.
4. mixing the innocuous substances such as sawdust and charcoal in deposit in situ, the drop of Water phosphor contaminant is promoted
Solution provides a kind of new approaches for processing higher concentration nitrogen phosphorus water.
Detailed description of the invention
Fig. 1 is apparatus of the present invention longitudinal sectional drawing；
Fig. 2 is apparatus of the present invention transverse cross-sectional view；
Fig. 3 is scale arrangement figure in river of the present invention；
Appended drawing reference meaning in figure: 1, high conductance structure, 2, in-situ deposition object area, 3, low conductivity structure, 4, impermeable stratum,
5, baffle, 6, argillic horizon.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Application principle of the invention is explained in detail with reference to the accompanying drawing.
The present invention as depicted in figs. 1 and 2 is used to enhance the device of river subsurface flow exchange, which is mostly installed at city
In inland river or the small river of flow.The device be mounted on 5 institute of river cross section two block baffle of front and back disposed in parallel every
Exhausted region, the center in this shallow trench isolation placed high conductance structure 1, and in 1 two sides of high conductance structure
It is the in-situ deposition object area 2 filled using in-situ deposition object in other spaces in device region provided with low conductivity structure 3.
Wherein, the vertical height of the low conductivity structure 3 is higher than the high conductance structure 1.Preferably, the low conduction
The vertical height of rate structure 3 is twice of the high conductance structure 1.The in-situ deposition object area 2 is located at described
The groove area and the baffle 5 and the low conduction that high conductance structure 1 and the low conductivity structure 3 are surrounded
In the gap of rate structure 3.
High conductance structure 1, low conductivity structure 3 and the in-situ deposition object area 2 is using different voidage structures
Material installation, can promote water body flow to cause aggregate flow and divergent flow, then cause to gush under river water respectively and gush in lower water,
Increase the residence time of undercurrent Flux and water flow.
In an embodiment of the present invention, the high conductance structure 1 is constructed using concrete or megalith, gap
Rate requires to be 0.01-0.05；The low conductivity structure 3 is constructed using gravel, voidage 0.4-0.5.It is described
In-situ deposition object area 2 in filler voidage require be 0.3-0.4, using in river bed Sediments fill, and
The adjustment of the environment degradables biomass such as sawdust or charcoal is wherein added.Since in-situ deposition object area 2 provides solute and microorganism
Between contact place, provide condition for many important biogeochemical reactions, promote various pollutants matter abundant
Reaction degradation, especially nitrogen and phosphorus pollutants, reduce the pollutional load of water body.
In addition, as shown in Figure 1, the top surface in the in-situ deposition object area 2 in apparatus of the present invention and the low conduction
Rate structure 3 flushes, and is located under the stream of surface.The device will not move river flow, sediment transport and aquatile in this way
It moves and has an impact, and can prevent river degradation from structure being caused to change by the covering of natural sediment.
It is also provided with impermeable stratum 4 in apparatus of the present invention bottom, the clay layer 6 in device side, i.e., along riverbank laying.
For preventing water flow from, around each structure in device, guaranteeing the progress of undercurrent exchange in the borderline region for lacking flowing.
The specific mounting means of the present apparatus are as follows: device installation or replacement are carried out at river dry season, if water flow mistake
It is big then upstream simple to install block water masonry dam control flow, it is ensured that installation region section river the depth of water be not higher than 1m.In river
Long 3 m are excavated in the position of bottom phreatic zone, and for width across river, depth is that the cube of device height is cheated, and baffle 5 is pressed and river
The parallel direction in road cross section is put into hole, and the distance between front and rear baffle 5 is 3m, and one side of the another set along riverbank is laid with viscous
Soil, and be laid in the bottom surface in hole with impermeable material.High conductance structure 1 is constructed with concrete or megalith in hole later, is used
Gravel constructs low conductivity structure 3, fills and leads up hole void with in-situ deposition object later, restores river original state, and control river slope
Degree is 1%-2%, passes through convenient for water flow and carries out undercurrent exchange.Device removes baffle 5 after being installed.
As shown in figure 3, being installed in series the 10-15 present apparatus in river with appropriate intervals, to reach better pollutant
Removal effect.
It is verified, it is about 50 m at one, wide 3 m continuously installs 10 present invention in the small-sized river of 1 m of mean depth
Device, the flow of the downstream of each device averagely can reach 0.51 L/s, and total downstream traffic is up to 5.65 L/s.Each
Device mean hydraulic residence time is up to 3.7 h, and the highest total hrt time is up to 19 h.Averagely every device to nitre
The removal rate of state nitrogen reaches 30%, to PO4 -Removal rate reaches 20%, while having certain removal effect to heavy metal ion such as copper, mercury, chromium
Fruit.
The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention.The technology of the industry
Personnel are it should be appreciated that the present invention is not limited to the above embodiments, and the above embodiments and description only describe this
The principle of invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these changes
Change and improvement all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and its
Equivalent thereof.
Claims (10)
1. a kind of device of enhancing river subsurface flow exchange, the device are mounted on the position of river bottom phreatic zone, feature
Be: including two pieces of front and back and river cross section baffle disposed in parallel (5), the baffle (5) is surrounded with two sides riverbank
Region in placed high conductance structure (1) and be located at high conductance structure (1) two sides low conductivity structure (3), it is described
Low conductivity structure (3) be located between high conductance structure (1) and baffle (5), surrounded region other spaces be adopt
The in-situ deposition object area (2) filled with in-situ deposition object.
2. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: the low conductivity
The vertical height of structure (3) is higher than the high conductance structure (1).
3. a kind of device of enhancing river subsurface flow exchange according to claim 2, it is characterised in that: the in-situ deposition
Object area (2) is located at the groove area surrounded in the high conductance structure (1) and the low conductivity structure (3), and
In the gap of the baffle (5) and the low conductivity structure (3).
4. a kind of device of enhancing river subsurface flow exchange according to claim 2, it is characterised in that: the in-situ deposition
The top surface in object area (2) is flushed with the low conductivity structure (3), and is located under the stream of surface.
5. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: further include that setting is filling
The impermeable stratum (4) in bottom set portion.
6. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: the device also wraps
It includes clay layer (6), the clay layer (6) is laid with along riverbank, parallel with water (flow) direction.
7. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: the baffle (5)
By being vertical setting between dismountable mode and two sides riverbank.
8. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: the high conductance
Structure (1) is constructed using concrete or megalith, and voidage requires to be 0.01-0.05；The low conductivity structure (3)
It is constructed using gravel, voidage 0.4-0.5.
9. a kind of device of enhancing river subsurface flow exchange according to claim 1, it is characterised in that: heavy in the original position
Environment degradable biomass, including sawdust or charcoal, voidage 0.3-0.4 are also mixed in product object.
10. a kind of equipment of enhancing river subsurface flow exchange, it is characterised in that: including by any one of 10-15 claim 1-9 people
The device is mounted in river using concatenated mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763006.7A CN110468776B (en) | 2019-08-19 | 2019-08-19 | Device for enhancing river channel undercurrent exchange |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910763006.7A CN110468776B (en) | 2019-08-19 | 2019-08-19 | Device for enhancing river channel undercurrent exchange |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110468776A true CN110468776A (en) | 2019-11-19 |
| CN110468776B CN110468776B (en) | 2021-04-16 |
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ID=68510998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910763006.7A Active CN110468776B (en) | 2019-08-19 | 2019-08-19 | Device for enhancing river channel undercurrent exchange |
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| Country | Link |
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| CN (1) | CN110468776B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556985A (en) * | 2020-12-16 | 2021-03-26 | 同济大学 | Riparian zone lateral undercurrent exchange simulation device with adjustable length and test method |
| CN113354190A (en) * | 2021-05-18 | 2021-09-07 | 中国环境科学研究院 | Ecological restoration device capable of enhancing submerged flow exchange of black and odorous water river |
| CN114112300A (en) * | 2021-11-22 | 2022-03-01 | 同济大学 | Tidal river beach lateral undercurrent exchange simulation device and test method |
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|---|---|---|---|---|
| CN201574397U (en) * | 2009-12-31 | 2010-09-08 | 华南理工大学 | Upright retaining wall type ecological slope protection |
| CN102730823A (en) * | 2012-07-10 | 2012-10-17 | 中国科学院生态环境研究中心 | Simulative nature river course water purification system |
| CN208120827U (en) * | 2018-01-11 | 2018-11-20 | 上海墨刻景观工程有限公司 | A kind of Landscape River ecological purification structure |
| CN109437477A (en) * | 2018-11-09 | 2019-03-08 | 方涛 | A kind of river channel ecology environmental reconstruction system |
-
2019
- 2019-08-19 CN CN201910763006.7A patent/CN110468776B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201574397U (en) * | 2009-12-31 | 2010-09-08 | 华南理工大学 | Upright retaining wall type ecological slope protection |
| CN102730823A (en) * | 2012-07-10 | 2012-10-17 | 中国科学院生态环境研究中心 | Simulative nature river course water purification system |
| CN208120827U (en) * | 2018-01-11 | 2018-11-20 | 上海墨刻景观工程有限公司 | A kind of Landscape River ecological purification structure |
| CN109437477A (en) * | 2018-11-09 | 2019-03-08 | 方涛 | A kind of river channel ecology environmental reconstruction system |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112556985A (en) * | 2020-12-16 | 2021-03-26 | 同济大学 | Riparian zone lateral undercurrent exchange simulation device with adjustable length and test method |
| CN112556985B (en) * | 2020-12-16 | 2021-10-08 | 同济大学 | Riparian zone lateral undercurrent exchange simulation device with adjustable length and test method |
| CN113354190A (en) * | 2021-05-18 | 2021-09-07 | 中国环境科学研究院 | Ecological restoration device capable of enhancing submerged flow exchange of black and odorous water river |
| CN114112300A (en) * | 2021-11-22 | 2022-03-01 | 同济大学 | Tidal river beach lateral undercurrent exchange simulation device and test method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110468776B (en) | 2021-04-16 |
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