| 引用本文: | 董思俊,何钟响,彭鸥,等.灌溉水净化系统对两种矿区水体中Cd去除及对稻米降镉效果研究[J].灌溉排水学报,0,():-. |
| DONG Sijun,HE Zhongxiang,PENG Ou,et al.灌溉水净化系统对两种矿区水体中Cd去除及对稻米降镉效果研究[J].灌溉排水学报,0,():-. |
|
| 摘要: |
| 【目的】降低灌溉水中的Cd量,降低稻米中Cd量。【方法】本研究建立了“植物塘+吸附池”为主体的净化模式,研究其对湖南两种典型矿区(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的积累效果。【结果】监测期间,ST试点(工矿污染)进水全量Cd平均浓度为6.86 μg.L-1,出水全量Cd平均浓度为0.81 μg.L-1,平均去除率为88.13%。DX试点(煤矿污染)进水全量Cd平均浓度为4.56 μg.L-1,出水全量Cd平均浓度为1.33 μg.L-1。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的Cd含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低58%。【结论】本研究建立的 “植物塘+吸附池”为主体的净化模式可有效去除污染灌溉水中的Cd,并且降低糙米Cd含量。 |
| 关键词: 灌溉水;镉;植物塘;矿区稻米 |
| DOI： |
| 分类号:X52 |
| 基金项目: |
|
| Removal of Cd in water of two mining areas by irrigation water purification system and Cd Reduction on Rice |
|
DONG Sijun, HE Zhongxiang, PENG Ou, HUANG Xinming, WU De, ZHANG Puxin, TIE Boqing
|
|
College of Resources and Environment,Hunan Agricultural University
|
| Abstract: |
| 【Objective】In order to reduce the Cd content in irrigation water and rice Cd content【Method】a system of "plant pond + adsorption pond" was set up for the main body was constructed to explore for the purification effect of irrigation water with Cd exceeding the standard and the Cd control effect of rice in two typical mining areas (industrial and coal pollution) in Hunan province.【Result】The results showed that during the monitoring period, the total Cd average inflow of ST pilot (industrial and mining pollution) was 6.86 μg.L-1, the total Cd average outflow was 0.81 μg.L-1, and the average removal rate was 88.13%.The average concentration of total inflow Cd in DX pilot (coal mine pollution) was 4.56 μg.L-1, and the average concentration of total outflow Cd was 1.33 μg.L-1.The average removal rate was 70.76%.After wetland system treatment, Cd content in brown rice in ST irrigated water purification area is 37% lower than that in unpurified rice, and Cd content in brown rice in DX irrigated water purification area is 58% lower than that in unpurified rice.【Conclusion】The results can provide scientific reference and data support for purification of Cd Polluted Irrigation Water and safe production of paddy field in two typical mining areas. |
| Key words: irrigation water;Cadmium;plant pond;rice in mining area |
