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云南露天金属矿山开采项目地表水环境影响评价要点分析
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Abstract:
在露天金属矿山环境影响评价项目中,矿山生产产生的废水主要污染物为SS、COD和重金属等,部分重金属污染物(如砷、铅等)是《环境影响评价技术导则地表水环境》(HJ2.3-2018)中提及的第一类污染物,故露天金属矿山环评中地表水评价工作等级定为一级。因此,虽然金属矿山产生的污水水质相对简单,但一级评价同时增加了金属矿山地表水评价的工作量。本文通过简洁的语言对露天开采金属矿山项目中地表水环境影响评价时的要点进行分析,为初写矿山环评的工作者提供有益参考。
In the open-air metal mine environmental impact assessment project, the main pollutants of wastewater produced by mine production are SS, COD and heavy metals. Some heavy metal pollu-tants (such as arsenic and lead) are recorded in “technical guidelines for environmental impact- surface water environment” (HJ2.3-2018) as the first type of pollutants, so the surface water eval-uation work level in the open-air metal mine environmental impact assessment is rated as level 1. Therefore, although the quality of sewage produced by metal mines is relatively simple, the first- level evaluation also increases the workload of surface water evaluation in metal mines. This article analyzes the main points of surface water environmental impact assessment in open-pit mining metal mine projects through concise language, and provides a useful reference for the workers who first wrote the mine environmental assessment.
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