期刊论文

Ecological interception effect of plant pond constructed wetland system on irrigation water Cd

中文

农业现代化研究

1000-0275

2019

40

3

518-526

10.13872/j.1000-0275.2019.0025

国家科技支撑计划项目(2015BAD05B02) 农业部财政部重大专项(农办财函[2016]6号) 湖南省重点学科建设项目(2006180)。

本校为第一机构

为拦截灌溉水Cd,设计实施了水平潜流与表面流两种工艺组合的植物塘人工湿地系统,在水稻生育期净化处理灌溉水,结合田间水稻种植小区试验,于2017年1月至2018年12月逐月采集水样,同时多次采集水稻和土壤样品,监测分析样品Cd 含量,探讨人工湿地系统对灌溉水中Cd 的净化效率及对米Cd 累积的影响。结果表明:连续两年监测,人工湿地系统进水Cd 浓度范围为0.034~0.644μg/L,平均浓度为0.232μg/L,经过植物塘人工湿地系统处理后出水Cd 浓度范围为0.001~0.189μg/L,平均浓度为0.059μg/L。一级、二级和三级人工湿地系统对灌溉水中Cd 的去除率分别为50.21%、14.06% 和7.81%,人工湿地系统总去除率达72.06%;与...

An ecological interception system consisted of horizontal subsurface flow and surface flow wetland was attempted to examine the effects of removal of cadmium(Cd) from the effluents of the terminal ditches of the system.The system combined with a paddy trial operated during the period of rice growing. The water samples were collected monthly from January 2017 to December 2018, during which the soil and rice samples were collected simultaneously to monitor and analyze the Cd content of those samples, in order to investigate the Cd purification in...