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Method for simulating heavy metal behaviours in drainage basin dynamically and quantitatively

A simulation method, heavy metal technology, applied in the field of environmental risk assessment and environmental management

Active Publication Date: 2015-11-11
BEIJING NORMAL UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, at present, SWAT can only calculate the migration process of heavy metals input into the river network in the form of point sources, and the movement of heavy metals is only determined through the mass conservation equation and does not involve the transformation of various forms of heavy metals

Method used

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  • Method for simulating heavy metal behaviours in drainage basin dynamically and quantitatively
  • Method for simulating heavy metal behaviours in drainage basin dynamically and quantitatively
  • Method for simulating heavy metal behaviours in drainage basin dynamically and quantitatively

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Embodiment Construction

[0065] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0066] The present invention adds a heavy metal module on the basis of the classic hydrological model SWAT, so that the improved model can realize the simulation of the migration and transformation of heavy metals in the watershed. The method is divided into 5 steps:

[0067] 1. Survey and sampling in the study area

[0068] Firstly, investigate the industrial and mining enterprises in the research area in detail, and determine the geographic co...

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Abstract

The invention discloses a method for simulating heavy metal behaviours in a drainage basin dynamically and quantitatively. On the basis of a heavy metal soil multi-element conversion dynamic model and a rapid heavy metal equilibrium hypothesis theory, the amount of liquid-phase heavy metals leached out of soil in a migration process along with a surface runoff, an interflow and a permeation flow, the amount of solid-phase heavy metals migrated to a riverway along with suspended sediments in the surface runoff after being adsorbed on soil particles in the migration process, the amount of heavy metals in the riverway removed from a water body through settlement action, the amount of heavy metals entering the water body from a sedimentary phase in a suspending manner, the amount of dissolved-phase heavy metals migrated from a high-concentration area to a low-concentration area through diffusion action, and the amount of heavy metals removed from the sedimentary phase through burying action are obtained by calculation; and furthermore, the heavy metal concentration in the researched drainage basin is obtained by performing computer simulation of various obtained heavy metal amounts.

Description

technical field [0001] The invention relates to the fields of environmental risk assessment and environmental management, and more specifically relates to a dynamic quantitative simulation method for heavy metal behavior in watersheds. Background technique [0002] Due to the increasing activities of human mining, smelting and processing of heavy metals, a large amount of heavy metals enter the environment. Among them, heavy metal pollution in mining areas is particularly serious. Randomly piled waste ore piles, tailings ponds with incomplete facilities, and sewage outlets in factory areas are all potential sources of pollution. The discharge of heavy metals in the form of point sources (factory sewage outlets) and non-point sources (waste mines, waste residues, tailings ponds, etc.) will cause harm to the water environment and soil environment of the basin, and affect the health of residents and social development. [0003] Due to the spatial heterogeneity of heavy metals ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 孟耀斌周凌峰何寿亮逯超籍裴希
Owner BEIJING NORMAL UNIVERSITY
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