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Method for detecting water age

A water body and water age technology, applied in the field of water age detection, can solve problems such as the limitation of spatial and temporal distribution characteristics, and achieve the effects of easy operation, small result error, and simple calculation method.

Inactive Publication Date: 2020-06-02
安徽省(水利部淮河水利委员会)水利科学研究院(安徽省水利工程质量检测中心站)
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, numerical simulation technology has its limitations in simulating the temporal and spatial distribution characteristics of water age.

Method used

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Experimental program
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Effect test

Embodiment 1

[0021] The method for detecting the water age of the water body comprises the following steps:

[0022] Step 1, deploying tracer monitoring devices for monitoring tracers in the water body;

[0023] Step 2, inject tracer at the water inlet;

[0024] Step 3: Calculate the water age at the location where the tracer monitoring device is deployed according to the time when the tracer is injected and the time when the tracer monitoring device detects the tracer.

[0025] Wherein, the location where the tracer monitoring device is deployed includes the transverse direction of the water body level, the longitudinal direction of the water body level, and the vertical direction of the water body level.

[0026] The time of injecting tracer at the water inlet, denoted as t 0 , the time when the i-th tracer monitoring device detects the tracer is t i , i=1, 2, 3,..., n; n is a positive integer;

[0027] The specific calculation method of the water age at the location of the i-th trac...

Embodiment 2

[0030] Stable isotope tracers such as 12 C. 13 C. l5 N. 18 O, etc.) or tracer substances (such as fluorescent substances, rare earth elements, trace ions, etc.) 0 It is: 2020-1-1 8:00:00 (the format is yyyy-m-d hh:mm:ss), the time when the first tracer monitoring device detects the tracer is t 1 It is: 2020-1-1 8:10:00, the time when the second tracer monitoring device detects the tracer is t 2 For: 2020-1-1 8:30:00, ..., the time when the 101st tracer monitoring device detects the tracer is t 101 For: 2020-1-28:00:00,……. Therefore,

[0031] T 1 = t 1 –t 0 =(2020-1-1 8:10:00)–(2020-1-1 8:00:00)=10m*60s=600s (unit: day d, hour h, minute m, second s);

[0032] T 2 = t 2 –t 0 =(2020-1-1 8:30:00)–(2020-1-1 8:00:00)=30m;

[0033] ...

[0034] T 101 = t 101 –t 0 =(2020-1-2 8:00:00)–(2020-1-1 8:00:00)=24h;

[0035] ...

[0036] and so on.

[0037] In the above-mentioned embodiments, the present invention uses tracer technology to quantitatively calculate the wate...

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Abstract

The invention relates to a method for detecting the water age of a water body and belongs to the technical field of water conservancy detection. The tracer agent monitoring device is arranged in the water body, the tracer agent is put into the water body, the water age of the water body is calculated through the tracer technology, and then the space-time distribution characteristics of the water age of the water body are revealed; the accuracy of the water age of the water body obtained according to the method is high.

Description

technical field [0001] The invention relates to a method for detecting the water age of a water body, and belongs to the technical field of water conservancy detection. Background technique [0002] The water age of a water microcluster at a certain point in space is defined as the time required for the water microcluster to flow through the point since it entered the control volume. Water age can better reflect the spatiotemporal heterogeneity of water exchange, and can be used as a time scale to quantify the transmission of pollutants in lakes, estuaries, and oceans. It can also be used to estimate the renewal cycle and self-purification capacity of water bodies, and infer the horizontal circulation of marginal seas, Calculate the transportation time of pollutants in lagoon and estuary systems, etc. Therefore, water age is widely used as an index to characterize the exchange capacity of water bodies. [0003] On-site observation (retrieval of water age by isotope observa...

Claims

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Application Information

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IPC IPC(8): G01N33/18
CPCG01N33/18
Inventor 董国强王振龙章启兵胡勇陈小凤司巧灵汪亚腾王敏杰董涛
Owner 安徽省(水利部淮河水利委员会)水利科学研究院(安徽省水利工程质量检测中心站)
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