期刊论文

A Constructed Wetland System to Remove Cd from Irrigation Water

中文

灌溉排水学报

1672-3317

2021

40

07

74-80

10.13522/j.cnki.ggps.2020729

国家重点研发计划项目（2017YFD0801505）；

本校为第一机构

【目的】降低灌溉水中的Cd量,降低稻米和土壤中Cd量。【方法】本研究建立了"植物塘+吸附池"为主体的净化模式,研究其对湖南2种典型矿区（工矿污染、煤矿污染）灌溉水Cd污染的净化效果以及降低稻米Cd积累效果。【结果】监测期间,ST试点（工矿污染）进水全量Cd平均质量浓度为6.86μg/L,出水全量Cd平均质量浓度为0.81μg/L,平均去除率为88.19%。DX试点（煤矿污染）进水全量Cd平均质量浓度为4.56μg/L,出水全量Cd平均质量浓度为1.33μg/L。平均去除率为70.76%。经过湿地系统处理后,ST灌溉水净化区糙米中的Cd量较未净化灌溉区的水稻相比降低37%,DX灌溉水净化区糙米中的Cd量较未净化灌溉区的水稻相比降...

【Background】Soil and water contamination by heavy metals has become an environmental concern worldwide. In China, wastewater produced from mining or mine-tailings leaching has resulted in heavy metals migrating into downstream water bodies and entering food chains following irrigation with such waters. Removing heavy metals from water prior to irrigation is hence vital to prevent them from ending up in the food chain. 【Objective】The aim of this paper is to present the results of an experimental study on the efficacy of a constructed wetland...