Method and device for calculating farmland surface source pollutant river pollution load

A calculation method and pollutant technology, applied in calculation, special data processing applications, instruments, etc., can solve problems such as unsuitable calculation range, weak mechanism description, weak physical mechanism, etc.

Inactive Publication Date: 2014-11-12
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology

The physical mechanism of this method is weak, and it is not suitable for a large calculation range; in addition, this method is weak in describing the mechanism of pollutants in the spatial migration and transformation process, and the calculation results are greatly disturbed by human factors

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  • Method and device for calculating farmland surface source pollutant river pollution load
  • Method and device for calculating farmland surface source pollutant river pollution load
  • Method and device for calculating farmland surface source pollutant river pollution load

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Embodiment Construction

[0026] 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.

[0027] A calculation method for the amount of farmland non-point source pollutants entering the river, such as figure 1 shown, including the following steps:

[0028] S1. Using WEP-L to simulate farmland runoff process, including monthly runoff process and annual runoff process

[0029] In step S1, the distributed hydrological model of the WEP-L watershed is developed on the basis of combining the respective advantages of the distributed hydrological model and the land surface process model, and the simulated object is the natural-artificial binary water cycle system. The model uses the “contour ...

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Abstract

The invention provides a method and device for calculating the farmland surface source pollutant river pollution load. Through calculation of the pollutant load obtained from the equation and the runoff process (WEP-L), the pollutant river entering process along with runoff is described through a programming language (Fortran programming) with a physical mechanism, dynamism and stability of the calculation result of the farmland surface source pollutant river pollution load are achieved, and excessive interference of human factors is removed; According to the method, simulation accuracy of the calculation result is improved, and the stable prediction function is achieved.

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 farmland non-point source pollutants entering rivers. Background technique [0002] Farmland non-point source pollution generally refers to dissolved or solid pollutants in agricultural production activities, such as organic or inorganic substances such as soil particles, nitrogen, phosphorus, pesticides and heavy metals in farmland, from non-specific areas, in precipitation and runoff Under the action of scouring, a large amount of pollutants enter the receiving water body (rivers, lakes, reservoirs, bays) through farmland surface runoff, farmland drainage and underground seepage. At present, the output coefficient method is usually used for the amount of farmland non-point source pollution entering the river. The output coefficient method refers to the product of the amount of farmland fertilizer, cro...

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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胡鹏贾仰文柴福鑫谢新民刘佳嘉陈星宇
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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