Manganese and associated heavy metal distribution prediction method of soil-water interface contaminated flow in manganese mine area

Abstract

The invention discloses a distribution prediction method of Mn and associated heavy metals, such as Cu, Ni, Zn, Pb, Cd and the like, in a soil-water interface contaminated flow in a manganese mine area. On the basis of runoff water sample actual detection data of a sampling point of a soil-water interface in the manganese mine area and along-river distribution status of heavy metal content in sediments, a BP prediction model of the manganese and associated heavy metal distribution in the soil-water interface contaminated flow in the manganese mine area is constructed on the basis of a GIS technology through a geostatistic method with the GIS technology with a BP neural network introduced. The predict model has excellent fault-tolerant capability and nonlinear approximating mapping capability. A predict result of contents and spatial distribution of the manganese and associated heavy metal of the soil-water interface contaminated flow in manganese mine area is more objective and accurate.

Description

technical field [0001] The invention belongs to the field of environmental pollution evaluation, in particular to a method for predicting the distribution of manganese and associated heavy metals in soil-water interface pollution flows in manganese mining areas. Background technique [0002] Soil-water interface pollution flow is a composite pollution fluid produced by polluted soil under the action of rainfall or snowmelt runoff. The pollutants include various heavy metals, persistent organic matter, nitrogen, phosphorus and other nutrients, and are also non-point source pollution. A special form of expression. Heavy metals (such as Pb, Cd, Cr, Cu, Zn, etc.) are global environmental pollutants, which are chronically toxic and carcinogenic to humans and organisms. In the mining and processing of metal manganese in manganese mining areas, manganese (Mn) and a large number of associated heavy metals (Cu, Ni, Zn, Pb, Cd) enter the soil of the mining area, and under the action ...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for predicting the distribution of manganese and associated heavy metals in soil-water interface pollution flow in manganese mining area, aiming to solve the problem of difficulty and poor accuracy in the distribution prediction of manganese and associated heavy metals in soil-water interface heavy metal pollution flow in manganese mining area

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