Prediction method for distribution of each heavy metal in polluted flow on soil-water interface of non-ferrous metal orefield

Abstract

The invention discloses a prediction method for distribution of each heavy metal in heavy metal polluted flow on a soil-water interface of a non-ferrous metal orefield. The technical points are as follows: the measured data of a sampling site on the soil-water interface of the non-ferrous metal orefield is taken a basis, a BP (back propagation) prediction model for distribution of each heavy metal in heavy metal polluted flow on the soil-water interface of the non-ferrous metal orefield based on GIS (geographic information system) technology support is constructed by utilizing a geostatistic method and combining the GIS technology in virtue of BP neural network technology principle to predict the contents, spatial variability and distribution of each heavy metal in the metal polluted flow on the soil-water interface, and the spatial distribution graph of heavy metals on the soil-water interface is drawn by ArcGIS software. According to the invention, theoretical basis and scientific reference are provided for ecology risk evaluation, control, treatment, restoration and the like of heavy metal pollution of the non-ferrous metal orefield, the accord development of the orefield and the mining cities is promoted, and great application value and social benefits are achieved.

Description

technical field [0001] The invention belongs to the technical field of environmental pollution evaluation and control in non-ferrous metal mining areas, and in particular relates to a method for predicting the distribution of heavy metals in heavy metal pollution flows at the soil-water interface in non-ferrous metal 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. [0003] Non-ferrous metals (such as Sb, As, Pb, Cd, Cr, Cu, Zn, Hg, etc.) are global environmental pollutants, which are chronically toxic and carcinogenic to humans and organisms. With the massive use of non-ferrous metals (such as antimony, lead, zinc, etc.) The flow of heavy metal pollution a...

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Problems solved by technology

In addition, due to the complex terrain, geology, rainfall or snowmelt runoff conditions of non-ferrous metal mining areas, solid waste (ore, waste ore, tailings sand, waste residue) and production sewage are abundant and widely distributed, and the surface damage is serious, resulting in non-ferrous metal mining areas The difficulty of predicting the distribution of heavy metals in heavy metal pollution flows at the soil-water interface increases the difficulty of evaluating and controlling associated heavy metal pollution in non-point source pollution in non-ferrous metal mining areas

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