CN110210674A - The method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet - Google Patents
The method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 24
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- 238000005859 coupling reaction Methods 0.000 claims abstract description 25
- 238000013508 migration Methods 0.000 claims abstract description 7
- 230000005012 migration Effects 0.000 claims abstract description 7
- XKMRRTOUMJRJIA-UHFFFAOYSA-N ammonia nh3 Chemical compound N.N XKMRRTOUMJRJIA-UHFFFAOYSA-N 0.000 claims description 10
- 238000004088 simulation Methods 0.000 claims description 7
- 241001672694 Citrus reticulata Species 0.000 claims description 4
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- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims description 2
- 238000011156 evaluation Methods 0.000 abstract 1
- 230000009466 transformation Effects 0.000 abstract 1
- 230000004224 protection Effects 0.000 description 11
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 4
- 229910052785 arsenic Inorganic materials 0.000 description 4
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 4
- 239000002352 surface water Substances 0.000 description 3
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Abstract
The invention discloses a kind of prediction river network in plain areas River contaminant drain outlets, and the method influenced on river water quality is arranged, and includes the following steps: that S1. constructs network of waterways hydrodynamic force water Quality Coupling Model；S2. prediction pollutant is determined；S3. each prediction contaminant information by River contaminant drain outlet discharge inputs network of waterways hydrodynamic force water Quality Coupling Model；S4. estimation range is determined；S5. the prediction scheme that prediction pollutant influences river water quality is determined；S6. the network of waterways hydrodynamic force water Quality Coupling Model based on foundation simulates the migration situation of pollutant under different blowdown operating conditions, determines influence distance of the prediction pollutant to river water quality.The present invention is by establishing network of waterways hydrodynamic force water Quality Coupling Model, major pollutants are chosen as evaluation index, the space transportion and transformation to discharge pollutants is described, determine that sewage discharge provides foundation to the impact analysis of river water quality and water ecological environment for the setting of River contaminant drain outlet to the coverage of water quality under different operating conditions.
Description
Technical field
The present invention relates to a kind of prediction river network in plain areas River contaminant drain outlets, and the method influenced on river water quality is arranged, especially
Be related to it is a kind of using the network of waterways hydrodynamic force water Quality Coupling Model prediction river network in plain areas River contaminant drain outlet be arranged to river water quality shadow
Loud method.
Background technique
" Water Law of the People's Republic of China " newly revised proposes three new basic management systems in terms of fwaater resources protection
Degree, i.e. water function area dividing, the supervision and management of River contaminant drain outlet, with the protection system of water water head site.This three primary institutions are common
The basic framework of fwaater resources protection supervision and management is constructed, the actual conditions in China are met, embodies water resources quantity, matter knot
It closes, functional requirement and protection require the basic thought combined.
The technical research for carrying out the setting of construction River contaminant drain outlet and environment influence is both a basic work of fwaater resources protection
Make, and is fortified water management of functional protection subzones, the setting of science examination & approval River contaminant drain outlet, protection drinking water source area and quality of water environment
The important link of equal fwaater resources protections work promotes conservation culture to build to drinking water source area safety, water environment safety is ensured
If ensureing that the sustainable use of water resource is played the role of greatly facilitating.
Currently, uniformly mixing one-dimensional water quality model is widely used and carries out pollutant concentration evolution with distance for general river
Prediction, but plain river network internal structure is intricate, the prediction result inaccuracy obtained using uniform mixing one-dimensional water quality model,
And then influence the benefit of water environment management measure.
Summary of the invention
Purpose: in order to overcome the deficiencies in the prior art, the present invention provides a kind of prediction river network in plain areas and enters river
The method that sewage outfalls setting influences river water quality.
Technical solution: in order to solve the above technical problems, the technical solution adopted by the present invention are as follows:
A method of prediction river network in plain areas River contaminant drain outlet setting influences river water quality, includes the following steps,
These data input prototype softwares are constructed network of waterways hydrodynamic force water Quality Coupling Model by S1. data collection；
S2. the prediction pollutant of River contaminant drain outlet discharge is determined；
S3. each pollutant data by River contaminant drain outlet discharge input network of waterways hydrodynamic force water Quality Coupling Model；
S4. estimation range is determined；
S5. the prediction scheme that prediction pollutant influences river water quality is determined；
S6. the network of waterways model based on foundation simulates the migration situation of pollutant under different blowdown operating conditions, determines pre-
Survey influence distance of the pollutant to river water quality.
Further, the prototype software in the step S1 is Mike11 or WASP model.
Further, the hydrodynamic model in network of waterways hydrodynamic force water Quality Coupling Model is established based on Saint-venant Equations, is adopted
Numerical value calculating is carried out with double methods of sweeping, using six dot center's implicit difference schemes, the governing equation of hydrodynamic model is as follows:
In formula, Q is river discharge；X is the space coordinate along water (flow) direction；BwFor width of regulating and storing, the width packet of regulating and storing
Include whole river width including beach；Z is river water level；T is time coordinate；Q is that the tributary flow that becomes a mandarin (becomes a mandarin and is positive, flow out then
It is negative)；U is mean velocity in section；G is acceleration of gravity；A is major trough discharge section area；B is main flow section width；N is river
Road roughness；R is hydraulic radius；
Water quality model in the hydrodynamic force water Quality Coupling Model of the network of waterways is using the hydrodynamic condition of hydrodynamic model generation as base
Plinth is calculated using pollutants convection diffusion equation, and water quality model governing equation is as follows:
In formula, Q is the discharge of river；Z is river water level；A is river area；Ex is longitudinal dispersion coefficient；C is water flow conveying
Material concentration；Ω is river crunode-node water surface area；J is node serial number；I is river associated with node j volume
Number；Sc is attenuation term relevant to conveying material concentration, Sc=KdAC；KdFor decay factor；S is external source sink term.
Further, the data collected needed for the step S1 building network of waterways hydrodynamic force water Quality Coupling Model includes basin
Figure, river topography data, hydrographic survey data, each pollution of river source data and Design of The Hydraulic Structure parameter and management and running
Rule.
Further, the prediction pollutant in the step S2 includes COD and ammonia nitrogen；It is collected according to sewage treatment project
Water data of water quality judges whether there is other characteristic contaminations in addition to COD and ammonia nitrogen, and if it exists, is received as prediction dirt
Contaminate object.
Further, River contaminant drain outlet inputs the network of waterways hydrodynamic force water quality coupling established in the form of point source in the step S3
Molding type, the data that need to be inputted include quantity of wastewater effluent, prediction pollutant concentration.
Further, the waters range predicted in the step S4 should in conjunction with River contaminant drain outlet periphery water system water regime and
Water environment protection target determines, including river where sewage draining exit, the Water Functional Zone adjacent with sewage draining exit place river and with
The river that river where sewage draining exit crosses.
Further, predict that pollutant need to comprehensively consider research to the prediction scheme that river water quality influences in the step S5
Source strength under the practical opening and closing situation at region lock station, the actual schedule situation of key water control project and sewage treatment project difference operating condition
After determine.
Further, the sewage treatment project difference operating condition includes River contaminant drain outlet normal discharge operating condition and dump
Operating condition.
Further, the calculation method of influence distance of the pollutant to river water quality is predicted in the step S6 are as follows:
1) it is required to determine the concentration standard for predicting pollutant according to the water concentration in river each in estimation range；
2) according to the simulation of water quality of model as a result, it is dense to find out each river prediction pollutant since sewage draining exit position
Degree is less than or equal to the position of first section of prediction pollutant concentration standard, is denoted as Wi section；
3) Wi section is calculated to the distance of sewage draining exit, as influence distance of the prediction pollutant to river water quality.
The utility model has the advantages that a kind of prediction river network in plain areas River contaminant drain outlet setting provided by the invention influences river water quality
Method, the migration by establishing network of waterways hydrodynamic force water Quality Coupling Model, to pollutant under different sewage draining exit difference blowdown operating conditions
Situation is simulated, and is overcome and is uniformly mixed one-dimensional water quality model to the difficulty of Complex River area prediction result inaccuracy.This
It is good to invent the method versatility provided, simulation precision is high, for different sewage draining exits, blowdown data only need to be modified in a model,
It is simple and convenient, it is particularly suitable for the complicated river network in plain areas of internal structure.
Detailed description of the invention
Fig. 1 is the flow diagram of prediction technique provided by the present invention
Specific embodiment
Below with reference to embodiment and attached drawing, the present invention will be further explained.
As shown in Figure 1, the method influenced on river water quality is arranged in a kind of prediction river network in plain areas River contaminant drain outlet, including
Following steps:
The corresponding prototype software of these data inputs is constructed network of waterways hydrodynamic force water Quality Coupling Model by S1. data collection；
The data of required collection include basin figure, each river topography data, hydrographic survey data, pollution of river source data with
And Design of The Hydraulic Structure parameter and management and running rule etc.；
The prototype software is Mike11 or WASP model.
S2. the prediction pollutant of River contaminant drain outlet discharge is determined；
The determination of prediction pollutant includes the following steps:
1) according to the factors such as section waters function, water quality situation and the horizontal accessibility of pollution treatment are proved, in conjunction with " earth's surface water ring
Border quality standard " (GB 3939-2002), determine routine water quality impact pollutant, i.e. COD and ammonia nitrogen；
2) the water data of water quality collected according to sewage treatment project is judged to whether there is other spies outside COD and ammonia nitrogen
Levy pollutant, and if it exists, received to predict pollutant.
S3. each pollutant data by River contaminant drain outlet discharge input network of waterways hydrodynamic force water Quality Coupling Model；
Pollution discharge into river point is inputted to the hydrodynamic force water Quality Coupling Model established in the form of point source, the data that need to be inputted include
Quantity of wastewater effluent, prediction pollutant concentration.
S4. estimation range is determined；
The estimation range should determine in conjunction with River contaminant drain outlet periphery water system water regime and water environment protection target, one
As include river where sewage draining exit, the adjacent Water Functional Zone in river where with sewage draining exit and cross with sewage draining exit place river
River.
S5. the prediction scheme that prediction pollutant influences river water quality is determined；
Prediction pollutant need to comprehensively consider the practical opening and closing feelings at survey region lock station on the prediction scheme that river water quality influences
It is determined after the factors such as the source strength under condition, the actual schedule situation of key water control project and sewage treatment project difference operating condition.
S6. the network of waterways model based on foundation simulates the migration situation of pollutant under different blowdown operating conditions, determines pre-
Survey influence distance of the pollutant to river water quality.
The calculation method of influence distance of the prediction pollutant to river water quality are as follows:
1) it is required to determine the concentration standard for predicting pollutant according to the water concentration in river each in estimation range；
2) according to the simulation of water quality of model as a result, it is dense to find out each river prediction pollutant since sewage draining exit position
Degree is less than or equal to the position of first section of prediction pollutant concentration standard, is denoted as WiSection；
3) W is calculatediSection as predicts influence distance of the pollutant to river water quality to the distance of sewage draining exit.
Embodiment 1
By taking the River contaminant drain outlet B in the area plain river network A as an example, specific implementation step of the invention is illustrated,
S1. network of waterways hydrodynamic force water Quality Coupling Model is constructed；
Basin figure, each river topography data, hydrographic survey data, pollution of river source data and hydraulic structure is collected to set
The corresponding portion of these data inputs Mike11 model is established network of waterways hydrodynamic force by the data such as parameter and management and running rule of counting
Water Quality Coupling Model.
S2. prediction pollutant is determined；
1) according to the factors such as section waters function, water quality situation and the horizontal accessibility of pollution treatment are proved, in conjunction with " earth's surface water ring
Border quality standard " (GB 3838-2002), determine that routine water quality impact pollutant is COD and ammonia nitrogen；
2) the water data of water quality collected according to sewage treatment project, characteristic contamination are mainly fluoride and arsenic, therefore
This project predicts that the pollutant factor is COD, ammonia nitrogen, fluoride, arsenic.
S3. the network of waterways hydrodynamic force water quality coupled mode each prediction pollutant data input of River contaminant drain outlet discharge established
Type；
The hydrodynamic force water Quality Coupling Model that River contaminant drain outlet is established with point source pattern input, the data of input include sewage row
High-volume, predict that pollutant concentration, data are shown in Table 1.
1 quantity of wastewater effluent of table and prediction pollutant concentration data
S4. estimation range is determined；
Proposed River contaminant drain outlet B sewage is discharged into river C1, and the position of River contaminant drain outlet B should be fully considered to river C1 and phase
The influence of water body is closed, therefore estimation range is determined as the river C1 that River contaminant drain outlet B sewage is discharged into and the river to cross with river C1
Road C2.
S5. the prediction scheme that prediction pollutant influences river water quality is determined；
Comprehensively consider at the practical opening and closing situation, the actual schedule situation of key water control project and sewage at estimation range inner brake station
After the factors such as the source strength under science and engineering journey difference operating condition, prediction scheme such as table 2 is determined.
Table 2 predicts the prediction scheme that pollutant influences river water quality
S6. the network of waterways hydrodynamic force water Quality Coupling Model based on foundation to the migration situation of pollutant under different blowdown operating conditions into
Row simulation determines influence distance of the prediction pollutant to river water quality；
1) it is required to determine the concentration standard for predicting pollutant according to the water concentration in river each in estimation range；
According to the water quality management target call of river C1, river C2, determine that river C1 executes " surface water environment quality mark
It is quasi- " IV class standard in (GB 3838-2002)；River C2 is executed in " water environment quality standard " (GB 3838-2002)
III class standard, it is each to predict that pollutant concentration standard is shown in Table 3.
Table 3 respectively predicts pollutant concentration standard
| Predict pollutant | River C1 predicts pollutant concentration standard | River C2 predicts pollutant concentration standard |
| COD | 30mg/L | 20mg/L |
| Ammonia nitrogen | 1.5mg/L | 1mg/L |
| Fluoride | 1.5mg/L | 1mg/L |
| Arsenic | 0.1mg/L | 0.05mg/L |
2) network of waterways hydrodynamic force water Quality Coupling Model based on foundation to the migration situation of pollutant under different blowdown operating conditions into
It is small to find out each river prediction pollutant concentration according to the simulation of water quality of model as a result, since sewage draining exit position for row simulation
In or equal to prediction pollutant concentration standard first section position, be denoted as WiSection；
3) W is calculatediSection as predicts influence distance of the pollutant to each river water quality to the distance of sewage draining exit.
Calculate separately the W of river C1iThe W of section, river C2iSection to the distance of sewage draining exit, obtain prediction pollutant COD,
Ammonia nitrogen, fluoride and arsenic are to the influence distance of river C1, river C2, and see Table 4 for details.
Table 4 predicts pollutant respectively to the influence distance of river C1, river C2
The above is only a preferred embodiment of the present invention, it should be pointed out that: for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (10)
1. the method influenced on river water quality is arranged in a kind of prediction river network in plain areas River contaminant drain outlet, it is characterised in that: including
Following steps,
These data input prototype softwares are constructed network of waterways hydrodynamic force water Quality Coupling Model by S1. data collection；
S2. the prediction pollutant of River contaminant drain outlet discharge is determined；
S3. each pollutant data by River contaminant drain outlet discharge input network of waterways hydrodynamic force water Quality Coupling Model；
S4. estimation range is determined；
S5. the prediction scheme that prediction pollutant influences river water quality is determined；
S6. the network of waterways model based on foundation simulates the migration situation of pollutant under different blowdown operating conditions, determines that prediction is dirty
Contaminate influence distance of the object to river water quality.
2. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: the prototype software in the step S1 is Mike11 or WASP model.
3. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: the hydrodynamic model in the hydrodynamic force water Quality Coupling Model of the network of waterways is established based on Saint-venant Equations, swept using double
Method carries out numerical value calculating, and using six dot center's implicit difference schemes, the governing equation of hydrodynamic model is as follows:
In formula, Q is river discharge；X is the space coordinate along water (flow) direction；BwFor width of regulating and storing, the width of regulating and storing includes beach
Whole river width inside；Z is river water level；T is time coordinate；Q is that tributary becomes a mandarin flow (become a mandarin and be positive, flow out, be negative)；u
For mean velocity in section；G is acceleration of gravity；A is major trough discharge section area；B is main flow section width；N is channel roughness；
R is hydraulic radius；
Water quality model in the hydrodynamic force water Quality Coupling Model of the network of waterways is adopted based on the hydrodynamic condition that hydrodynamic model generates
It is calculated with pollutants convection diffusion equation, water quality model governing equation is as follows:
In formula, Q is the discharge of river；Z is river water level；A is river area；Ex is longitudinal dispersion coefficient；C is the object of water flow conveying
Matter concentration；Ω is river crunode-node water surface area；J is node serial number；I is river associated with node j number；Sc
For attenuation term relevant to conveying material concentration, Sc=KdAC；KdFor decay factor；S is external source sink term.
4. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: the data collected needed for the step S1 building network of waterways hydrodynamic force water Quality Coupling Model includes basin figure, river
Terrain data, hydrographic survey data, each pollution of river source data and Design of The Hydraulic Structure parameter and management and running rule.
5. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: the prediction pollutant in the step S2 includes COD and ammonia nitrogen；The water water collected according to sewage treatment project
Matter data judges whether there is other characteristic contaminations in addition to COD and ammonia nitrogen, and if it exists, is received to predict pollutant.
6. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: River contaminant drain outlet inputs the network of waterways hydrodynamic force water quality coupled mode established in the form of point source in the step S3
Type, the data that need to be inputted include quantity of wastewater effluent, prediction pollutant concentration.
7. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: the waters range predicted in the step S4 should combine River contaminant drain outlet periphery water system water regime and water environment
Target is protected to determine, including river, the Water Functional Zone and and sewage draining exit adjacent with river where sewage draining exit where sewage draining exit
The river that place river crosses.
8. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: predicting that pollutant need to comprehensively consider survey region lock to the prediction scheme that river water quality influences in the step S5
After source strength under practical opening and closing situation, the actual schedule situation of key water control project and the sewage treatment project difference operating condition stood really
It is fixed.
9. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 8,
It is characterized by: the sewage treatment project difference operating condition includes River contaminant drain outlet normal discharge operating condition and dump operating condition.
10. the method influenced on river water quality is arranged in prediction river network in plain areas River contaminant drain outlet according to claim 1,
It is characterized by: predicting the calculation method of influence distance of the pollutant to river water quality in the step S6 are as follows:
1) it is required to determine the concentration standard for predicting pollutant according to the water concentration in river each in estimation range；
2) according to the simulation of water quality of model as a result, it is small to find out each river prediction pollutant concentration since sewage draining exit position
In or equal to prediction pollutant concentration standard first section position, be denoted as Wi section；
3) Wi section is calculated to the distance of sewage draining exit, as influence distance of the prediction pollutant to river water quality.
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| CN112632865A (en) * | 2020-12-16 | 2021-04-09 | 中建三局第一建设工程有限责任公司 | Method for regulating and controlling optimal flow velocity of inland river water system |
| CN112884330A (en) * | 2021-02-26 | 2021-06-01 | 澜途集思生态科技集团有限公司 | Quantitative method for influence of artificial disturbance on water quality |
| CN113326646A (en) * | 2021-06-10 | 2021-08-31 | 西安理工大学 | Water quality prediction method for deep-buried super-long high-ground-temperature water delivery tunnel |
| CN117633721A (en) * | 2024-01-25 | 2024-03-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Urban river network transparency prediction method driven by mechanism model and data in combined mode |
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| CN112632865B (en) * | 2020-12-16 | 2022-12-09 | 中建三局第一建设工程有限责任公司 | Method for regulating and controlling optimal flow velocity of inland river water system |
| CN112884330A (en) * | 2021-02-26 | 2021-06-01 | 澜途集思生态科技集团有限公司 | Quantitative method for influence of artificial disturbance on water quality |
| CN113326646A (en) * | 2021-06-10 | 2021-08-31 | 西安理工大学 | Water quality prediction method for deep-buried super-long high-ground-temperature water delivery tunnel |
| CN113326646B (en) * | 2021-06-10 | 2023-02-03 | 西安理工大学 | Water quality prediction method for deep-buried super-long high-ground-temperature water delivery tunnel |
| CN117633721A (en) * | 2024-01-25 | 2024-03-01 | 水利部交通运输部国家能源局南京水利科学研究院 | Urban river network transparency prediction method driven by mechanism model and data in combined mode |
| CN117633721B (en) * | 2024-01-25 | 2024-04-09 | 水利部交通运输部国家能源局南京水利科学研究院 | Urban river network transparency prediction method driven by mechanism model and data in combined mode |
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