CN108280585A - Plan small-sized river pollutant carrying capacity risk estimation methods under arbitrary multiple spot generalization of sewage draining exit - Google Patents
Plan small-sized river pollutant carrying capacity risk estimation methods under arbitrary multiple spot generalization of sewage draining exit Download PDFInfo
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- CN108280585A CN108280585A CN201810094196.3A CN201810094196A CN108280585A CN 108280585 A CN108280585 A CN 108280585A CN 201810094196 A CN201810094196 A CN 201810094196A CN 108280585 A CN108280585 A CN 108280585A
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Abstract
The present invention relates to small-sized river pollutant carrying capacity risk estimation methods under a kind of arbitrary multiple spot generalization of planning sewage draining exit, include the following steps：(1) investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position, determine the quantity n' of the sewage draining exit and its position x relative to initial section after generalizationi；(2) it measures and determines that this receives dirty section controls up to par cross section place x', initial section pollutant concentration C0, measure average section of river flow velocity u, discharge of river Q；(3) the section contaminant degradation coefficient k and its uncertainty α are determined according to measurement result；(4) pollutant of control section concentration C up to standard is determined according to receiving dirty section downstream water demand standards, calculate the risk of the section pollutant carrying capacity.The advanced science of the method for the present invention can effectively estimate the risk of river pollutant carrying capacity in the case of arbitrary planning sewage draining exit through the invention, and improve the management level of river water quality.
Description
Technical field
The present invention relates to small-sized river pollutant carrying capacity risk estimation methods under a kind of arbitrary multiple spot generalization of planning sewage draining exit, belong to
In river water quality management domain.
Background technology
The determination of river pollutant carrying capacity is the important means of river water quality management, and just whether river pollutant carrying capacity result of calculation
Whether the height and river water body protection for really determining river water quality management level succeed.In river pollutant carrying capacity calculating process
In, multiple sewage draining exits are often generalized as single sewage draining exit；This generalization mode is poor to the estimated accuracy of river pollutant carrying capacity,
And the calculating of the river pollutant carrying capacity after previous sewage draining exit generalization does not consider that the uncertainty of contaminant degradation coefficient is right completely
River pollutant carrying capacity estimates the deviation brought, and thus caused possible risk, is brought to river water body water quality protection work
Very detrimental effect.
Invention content
The purpose of the present invention aiming at above-mentioned drawback of the existing technology, in order to overcome it is existing in the prior art not
Foot, provides small-sized river pollutant carrying capacity risk estimation methods under a kind of arbitrary multiple spot generalization of planning sewage draining exit, this method can have
Risk in effect estimation pollutant carrying capacity calculating, is easy to promote in various small-sized river water quality management.
The object of the present invention is achieved like this, small-sized river pollutant carrying capacity under a kind of arbitrary multiple spot generalization of planning sewage draining exit
Risk estimation methods, which is characterized in that include the following steps：
(1) investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position
It sets, according to the quantity n' of sewage draining exit after investigation result determination generalization and its relative to the position x of initial sectioni(i=1,2 ...,
n')；Specifically include following steps：
A. investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position；
B. neighbouring planning sewage draining exit is generalized as by a sewage draining exit according to investigation result, determines the number of sewage draining exit after generalization
Measure the n' and position x relative to initial sectioni(i=1,2 ..., n')；
(2) it determines that this receives dirty section controls up to par cross section place x', measures initial section pollutant concentration C0, measure section
Mean flow rate u, discharge of river Q；
(3) dirty section contaminant degradation coefficient k and its uncertainty α are received according to measurement result determination；It specifically includes following
Step：
A. repeated measurement controls up to par section pollutant concentration is multiple, calculates being averaged for controls up to par section pollutant concentration
Value, and as the mathematic expectaion E (C) of controls up to par section pollutant concentration；Calculate the side of controls up to par section pollutant concentration
Poor D (C)；
B. combine controls up to par cross section place x', initial section position x, the controls up to par section pollutant that is calculated dense
The initial section pollutant concentration C that the mathematic expectaion E (C) of degree and measurement obtain0, average section of river flow velocity u, according to stochastic differential
Analysis result calculates contaminant degradation coefficient k with following formula：
C. it combines and contaminant degradation coefficient k, the variance D (C) of controls up to par section pollutant concentration and survey is calculated
The initial section pollutant concentration C measured0, average section of river flow velocity u, controls up to par cross section place x', initial section position x；
According to stochastic differential analysis result, the uncertainty α of contaminant degradation coefficient is calculated with following formula：
(4) pollutant of controls up to par section concentration C up to standard is determined according to receiving dirty section downstream water demand standards, in conjunction with row
Dirty mouth generally changes independence, contaminant degradation coefficient k and uncertainty α, the average section of river stream of result and sewage draining exit blowdown plan
Fast u, discharge of river Q calculate the variance D (W) of the section pollutant carrying capacity with stochastic analysis result, as the section in sewage draining exit
The risk of pollutant carrying capacity under planning；Specifically include following steps：
A. the pollutant of control section concentration C up to standard is determined according to receiving dirty section downstream water demand standards；
B. in conjunction with sewage draining exit multiple spot generally change result, contaminant degradation coefficient k and uncertainty α, average section of river flow velocity u,
Discharge of river Q calculates the variance D (W) of the section pollutant carrying capacity with following formula, and here it is the risks of the pollutant carrying capacity of the section：
The advanced science of the method for the present invention, through the invention, in order to solve the above technical problems, the planning sewage draining exit of the present invention is appointed
Small-sized river pollutant carrying capacity risk estimation methods under multiple spot generalization of anticipating, include the following steps：(1) investigation, which determines, receives the starting of dirty section
The quantity n for the sewage draining exit planned on cross section place x and the section and its position determine sewage draining exit after generalization according to investigation result
Quantity n' and its position x relative to initial sectioni(i=1,2 ..., n')；(2) it measures and determines that this receives the control up to standard of dirty section
Cross section place x' processed, initial section pollutant concentration C0, measure average section of river flow velocity u, discharge of river Q；(3) according to measurement result
Determine the section contaminant degradation coefficient k and its uncertainty α；(4) determine that control is disconnected according to receiving dirty section downstream water demand standard
The pollutant concentration C up to standard in faces, generally change the independence of result and sewage draining exit blowdown in conjunction with sewage draining exit, contaminant degradation coefficient k and
Uncertainty α, average section of river flow velocity u, discharge of river Q, the variance D of the section pollutant carrying capacity is calculated with stochastic analysis result
(W), the risk of the pollutant carrying capacity as the section under sewage draining exit planning.
Preferably, the step (1), specifically includes following steps:
A. investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position；
B. neighbouring planning sewage draining exit is generalized as by a sewage draining exit according to investigation result and practical experience, after determining generalization
The quantity n' of sewage draining exit and position x relative to initial sectioni(i=1,2 ..., n')；
Preferably, the step (3), specifically includes following steps:
A. repeated measurement controls up to par section pollutant concentration is multiple, calculates the average value of the section pollutant concentration, and
Mathematic expectaion E (C) as the pollutant concentration；Calculate the variance D (C) of the section pollutant concentration；
B. it combines the pollutant mathematic expectaion E (C) being calculated and measures obtained initial section pollutant concentration C0,
Average section of river flow velocity u；According to stochastic differential analysis result, contaminant degradation coefficient k is calculated with following formula：
C. it combines and pollution degradation coefficient k is calculated, what the variance D (C) of the section pollutant concentration and measurement obtained
Initial section pollutant concentration C0, average section of river flow velocity u；According to stochastic differential analysis result, contaminant degradation is calculated with following formula
The uncertainty α of coefficient：
Preferably, the step (4) specifically includes following steps：
A. the pollutant of control section concentration C up to standard is determined according to receiving dirty section downstream water demand standards；
B. combine sewage draining exit multiple spot generalization as a result, contaminant degradation coefficient k and uncertainty α, average section of river flow velocity u,
Discharge of river Q calculates the section pollutant carrying capacity with the independence result of stochastic analysis and sewage draining exit blowdown plan with following formula
Variance D (W), here it is the risks of the pollutant carrying capacity of the section：
Advantageous effect：The concept and estimation mode of present invention combination pollutant carrying capacity and stochastic analysis are theoretical, it is proposed that estimate
Calculate small-sized river pollutant carrying capacity risk estimation methods under planning arbitrary multiple spot generalization of sewage draining exit.Can effectively it be estimated using this method
The risk of river pollutant carrying capacity in the case of arbitrary planning sewage draining exit, and improve the management level of river water quality.This method
It is simple and convenient, it is easy to promote in each river management is put into practice.
Description of the drawings
Fig. 1 is the flow diagram of the present invention.
Specific implementation mode
Small-sized river pollutant carrying capacity risk estimation methods under a kind of arbitrary multiple spot generalization of planning sewage draining exit, including following step
Suddenly：
(1) investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position
It sets, according to the quantity n' of sewage draining exit after investigation result determination generalization and its relative to the position x of initial sectioni(i=1,2 ...,
n')；Specifically include following steps：
A. investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position；
B. neighbouring planning sewage draining exit is generalized as by a sewage draining exit according to investigation result, determines the number of sewage draining exit after generalization
Measure the n' and position x relative to initial sectioni(i=1,2 ..., n')；
(2) it determines that this receives dirty section controls up to par cross section place x', measures initial section pollutant concentration C0, measure section
Mean flow rate u, discharge of river Q；
(3) dirty section contaminant degradation coefficient k and its uncertainty α are received according to measurement result determination；It specifically includes following
Step：
A. repeated measurement controls up to par section pollutant concentration is multiple, calculates being averaged for controls up to par section pollutant concentration
Value, and as the mathematic expectaion E (C) of controls up to par section pollutant concentration；Calculate the side of controls up to par section pollutant concentration
Poor D (C)；
B. combine controls up to par cross section place x', initial section position x, the controls up to par section pollutant that is calculated dense
The initial section pollutant concentration C that the mathematic expectaion E (C) of degree and measurement obtain0, average section of river flow velocity u, according to stochastic differential
Analysis result calculates contaminant degradation coefficient k with following formula：
C. it combines and contaminant degradation coefficient k, the variance D (C) of controls up to par section pollutant concentration and survey is calculated
The initial section pollutant concentration C measured0, average section of river flow velocity u, controls up to par cross section place x', initial section position x；
According to stochastic differential analysis result, the uncertainty α of contaminant degradation coefficient is calculated with following formula：
(4) pollutant of controls up to par section concentration C up to standard is determined according to receiving dirty section downstream water demand standards, in conjunction with row
Dirty mouth generally changes independence, contaminant degradation coefficient k and uncertainty α, the average section of river stream of result and sewage draining exit blowdown plan
Fast u, discharge of river Q calculate the variance D (W) of the section pollutant carrying capacity with stochastic analysis result, as the section in sewage draining exit
The risk of pollutant carrying capacity under planning；Specifically include following steps：
A. the pollutant of control section concentration C up to standard is determined according to receiving dirty section downstream water demand standards；
B. in conjunction with sewage draining exit multiple spot generally change result, contaminant degradation coefficient k and uncertainty α, average section of river flow velocity u,
Discharge of river Q calculates the variance D (W) of the section pollutant carrying capacity with following formula, and here it is the risks of the pollutant carrying capacity of the section：
It is illustrated further below in conjunction with the accompanying drawings with the small-sized river actual observation data of China's Taihu Plain.
(1) it according to flow chart shown in Fig. 1, records this and receives position x=0 meters of dirty section initial section.Then, the river is investigated
Upper planning sewage draining exit distributing position.The Drain contamination for river channel mouth is numerous, and there are about 15, but focuses primarily upon under the initial section in the river
At 1.5 kilometers of trip and at 2.5 kilometers.
15 sewage draining exits are rule of thumb generalized as to two blowdowns positioned at 1.5 kilometers and 2.5 kilometers of initial section downstream
Mouthful；I.e. in this example n'=2, x1=1500 meters and x2=2500 meters.
(2) it measures and determines that this receives dirty section controls up to par cross section place x' i.e. x' at 5.2 kilometers of initial section downstream
=5200 meters, initial section permanganate index concentration C0For 9.8 mg/litres, it is 0.01 meter per second to measure average section of river flow velocity u,
Discharge of river Q is 1.15 cubes of meter per seconds.
(3) repeated measurement control section permanganate index is multiple, calculates the average value of the section permanganate index, and
Mathematic expectaion E (C) as permanganate index；Calculate the variance D (C) of the section permanganate index.In this example, the control
The mathematic expectaion of the permanganate index of section processed is 7.2 mg/litres；The variance of permanganate index is 0.58 milligram2/ liter2
The degradation coefficient that the river permanganate index is calculated according to the following formula is 0.166/ day：
The uncertainty that the river permanganate index degradation coefficient is calculated according to the following formula is 0.077/ day1/2:
(4) the section downstream is agricultural water area, executes national water standard《GB3838-2002》In V class water quality marks
Standard, therefore the standard C of the control section permanganate indexsFor 15 mg/litres.
By the above-mentioned permanganate degradation coefficient and uncertainty measured and calculated, receive the length of dirty section, flow and
Flow velocity, initial section permanganate index substitute into following formula：
The river be can be calculated under the planning of this sewage draining exit, the risk of pollutant carrying capacity is 2.44 tons2/ day2。
Claims (1)
1. small-sized river pollutant carrying capacity risk estimation methods under a kind of arbitrary multiple spot generalization of planning sewage draining exit, which is characterized in that packet
Include following steps：
(1) investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position, root
The quantity n' of the sewage draining exit and its position x relative to initial section after result determination generalization according to investigationsi(i=1,2 ..., n')；
Specifically include following steps：
A. investigation determine receive the sewage draining exit planned on dirty section initial section position x and the section quantity n and its position；
B. neighbouring planning sewage draining exit is generalized as by a sewage draining exit according to investigation result, determines the quantity n' of sewage draining exit after generalization
And the position x relative to initial sectioni(i=1,2 ..., n')；
(2) it determines that this receives dirty section controls up to par cross section place x', measures initial section pollutant concentration C0, measure average section of river
Flow velocity u, discharge of river Q；
(3) dirty section contaminant degradation coefficient k and its uncertainty α are received according to measurement result determination；Specifically include following steps：
A. repeated measurement controls up to par section pollutant concentration is multiple, calculates the average value of controls up to par section pollutant concentration,
And as the mathematic expectaion E (C) of controls up to par section pollutant concentration；Calculate the variance D of controls up to par section pollutant concentration
(C)；
B. controls up to par cross section place x', initial section position x, the controls up to par section pollutant concentration being calculated are combined
The initial section pollutant concentration C that mathematic expectaion E (C) and measurement obtain0, average section of river flow velocity u, analyzed according to stochastic differential
As a result, calculating contaminant degradation coefficient k with following formula：
C. combine be calculated contaminant degradation coefficient k, controls up to par section pollutant concentration variance D (C) and measure
The initial section pollutant concentration C arrived0, average section of river flow velocity u, controls up to par cross section place x', initial section position x；According to
Stochastic differential analysis result calculates the uncertainty α of contaminant degradation coefficient with following formula：
(4) pollutant of controls up to par section concentration C up to standard is determined according to receiving dirty section downstream water demand standards, general in conjunction with sewage draining exit
Change result and independence, contaminant degradation coefficient k and the uncertainty α of sewage draining exit blowdown plan, average section of river flow velocity u, river
Road flow Q calculates the variance D (W) of the section pollutant carrying capacity with stochastic analysis result, as the section under sewage draining exit planning
Pollutant carrying capacity risk；Specifically include following steps：
A. the pollutant of control section concentration C up to standard is determined according to receiving dirty section downstream water demand standards；
B. generally change result, contaminant degradation coefficient k and uncertainty α, average section of river flow velocity u, river in conjunction with sewage draining exit multiple spot
Flow Q calculates the variance D (W) of the section pollutant carrying capacity with following formula, and here it is the risks of the pollutant carrying capacity of the section：
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4214763A1 (en) * | 1992-05-10 | 1993-11-11 | Grabbe Klaus | Process for using composts for the immobilization of organic and inorganic pollutants |
| CN102831324A (en) * | 2012-09-04 | 2012-12-19 | 北京师范大学 | Method for computing river environmental capacity based on interval number theory |
| CN107315912A (en) * | 2017-06-21 | 2017-11-03 | 河海大学 | A kind of medium and small dendritic pollution of river thing concentration prediction and pollutant carrying capacity computational methods |
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2018
- 2018-01-31 CN CN201810094196.3A patent/CN108280585B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4214763A1 (en) * | 1992-05-10 | 1993-11-11 | Grabbe Klaus | Process for using composts for the immobilization of organic and inorganic pollutants |
| CN102831324A (en) * | 2012-09-04 | 2012-12-19 | 北京师范大学 | Method for computing river environmental capacity based on interval number theory |
| CN107315912A (en) * | 2017-06-21 | 2017-11-03 | 河海大学 | A kind of medium and small dendritic pollution of river thing concentration prediction and pollutant carrying capacity computational methods |
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