摘要
微曝气强化生态浮床是在传统生态浮床基础上引进微曝气系统和人工介质,主要组成包括微曝气单元、人工介质和水生植物。在实验室条件下,探讨分析该浮床在不同植物种类条件下对水中磷元素的去除效果。结果表明,微曝气强化生态浮床和传统生态浮床对水中总磷(TP)的去除率分别为61.13%和40.97%;对溶解性正磷酸盐(SRP)的去除率分别为69.74%和46.80%,人工介质和微曝气系统的引进增强了生态浮床对水中磷的去除。不同植物对水中SRP和TP的净化效率差异较大,黄菖蒲对水中SRP和TP的去除效率优于水竹和西伯利亚鸢尾。植物吸收是微曝气强化生态浮床除磷的重要途径,3种植物吸收对磷元素去除的贡献率分别为水竹(51.0%)>黄菖蒲(45.2%)>西伯利亚鸢尾(14.1%),且吸收的磷元素主要集中于植物的茎叶部分。
The micro-aeration enhanced ecological floating bed （MAEEFB） was developed by adding micro-aeration system and artificial medium in the basis of the traditional ecological floating bed （TEFB）, which includes aeration unit, artificial medium and aquatic plant. The removal efficiency of phosphorus by MAEEFB with different plants in sewage in the experimental conditions was investigated. The results showed that the removal rate of soluble reactive phosphorus （SRP） and total phosphorus （TP） by MAEEFB were 69.74% and 61.13%, respectively, while 46.8% and 40.97% by TEFB, indicating that the addition of micro-aeration system and artificial medium could enhance the removal efficiency of phosphorus in TEFB. The purification efficiency of SRP and TP in MAEEFB with different plants was quite different, and the MAEEFB with Iris pseudacorus L. had the highest removal efficiency. The absorption by plant was one of the important ways to remove the phosphorus in MAEEFB. The contribution of the absorption by three different plants to the removal of phosphorus was 51.0% （Phyllostachys heteroclada Oliver.）, 4,5.2% （Iris pseudacorus L.） and 14.1% （Iris sibirica L.）, respectively. The absorbed phosphorus was mainly concentrated in the part of the plant above water.
作者
周高峰
刘义青
付永胜
张泽乾
董坤
ZHOU Gaofeng; LIU Yiqing; FU Yongsheng; ZHANG Zeqian; DONG Kun(Faculty of Geosciences and Environmental Engineering, Southwest Jiaotong University, Chengdu 611756, China)
出处
《环境科学与技术》
CAS
CSCD
北大核心
2018年第10期69-74,共6页
Environmental Science & Technology
基金
四川省科技厅计划项目:新型微曝气生态浮岛生物操纵技术在静态污染水体修复中的应用研究(2017SZ0175)
关键词
微孔曝气
生态浮床
总磷
溶解性正磷酸盐
micro-aeration
ecological floating bed
total phosphorus
soluble reactive phosphorus
