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Soil erosion type non-point source pollutant river entering quantity calculating method and device

A soil erosion and pollutant technology, applied in the direction of calculation, special data processing applications, instruments, etc., can solve the problems of large interference in the calculation results of non-point source pollution entering the river and limited application scope.

Inactive Publication Date: 2014-11-19
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

[0003] 1. The amount of soil erosion non-point source pollution into the river is usually calculated by the output coefficient method or the water quality inversion method, which can only be completed by relying on targeted experimental data. The scope of application is limited, and it is not suitable for the calculation of large-scale pollution into the river.
[0004] 2. The calculation results of soil erosion non-point source pollution into the river are greatly disturbed by human factors

Method used

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  • Soil erosion type non-point source pollutant river entering quantity calculating method and device

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[0034] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0035] A calculation method for the amount of soil erosion non-point source pollutants entering the river, such as figure 1 shown, including the following steps:

[0036] S1. Calculate the amount of soil erosion by using the general soil loss equation

[0037] In step S1, the Universal Soil Loss Equation USLE (Universal Soil Loss Equation) is an empirical soil erosion forecasting model used to quantitatively predict the multi-year average annual soil loss on land slopes, and its mathematical expression is the multiplication of a series of variables in equation form. The calculation formula is: ...

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Abstract

The invention provides a soil erosion type non-point source pollutant river entering quantity calculating method and device. By calculating the pollutant content (universal soil loss equation) and the runoff (WEP-L), the process of pollutants entering a river with the runoff is described through programming language with the physical mechanism, the dynamics and stability of soil erosion type non-point source pollutant river entering quantity calculating result are realized, and excessive interference by human factor is eliminated; the simulation accuracy of the calculating result is improved, and the stable predicting function is realized.

Description

technical field [0001] The invention belongs to the field of hydrology and water environment, and in particular relates to a method and a device for calculating the amount of soil erosion non-point source pollutants entering rivers. Background technique [0002] Soil erosion type non-point source pollution generally refers to the phenomenon that dissolved and solid pollutants contained in soil particles flow into the receiving water body through the runoff process from a non-specific location under the washing effect of precipitation (or snowmelt), causing the water quality to deteriorate. , Such pollutants mainly include organic matter, nitrogen, phosphorus, heavy metals, etc. The output coefficient method or water quality inversion method is usually used. The disadvantages of these methods are: [0003] 1. The amount of soil erosion non-point source pollution into the river is usually calculated by the output coefficient method or the water quality inversion method, which...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 贺华翔周祖昊牛存稳贾仰文胡鹏谢新民柴福鑫陈星宇
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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