摘要
于2016年7月15日~8月14日,以梭鱼草（Pontederia cordata）、箭叶梭鱼草（Pontederia lanceolata）、黄菖蒲（Iris pseudacorus）和路易斯安娜鸢尾（Iris hybrids‘Louisiana’）作为供试材料,进行植物净化模拟城市污水的实验,分析各种植物对污水中污染物的去除效果;利用主成分分析法和隶属函数法,对植物净化污水的效果进行综合评价。研究结果表明,净化处理的长短对植物的修复效果存在一定影响,在实验的第12天至第18天,植物对污水的处理效果最佳。4种植物都具有较强的净化污水效果,对铜绿微囊藻（Microcystis aeruginosa）的平均抑制率都大于47.10%,对总氮、总磷和高锰酸盐指数（CODMn）的平均去除率分别大于77.47%、80.34%和21.94%。4种植物对不同污染程度污水中的各种污染物的去除效率有一定差异,箭叶梭鱼草对各种污染物的平均去除效率最高。4种植物中,箭叶梭鱼草适用于不同浓度污水的净化,黄菖蒲适用于重度污染污水的净化,路易斯安娜鸢尾净化能力稍差,但优势是常绿,可以四季使用,梭鱼草适合短期净化污水。
The research on purification of simulated urban polluted water with four aquatic plants were conducted from 15 July to 14 August, 2016. The contaminants have been measured to comparatively analyze the decontamination capability of the plants, and the purification effect was evaluated synthetically accrording to principal component analysis and subordinate function. The results showed that the repair effect of treatment was closely related to the processing time, and the optimal retention time was 12- 18 days. Four aquatic ornamental plants possess fairly strong depuration, and the average inhibition rate of Microcystis aeruginosa was all up to 47.10%, and meanwhile the average removal rates of total nitrogen, total phosphorus and permanganate index were more than 77.47%, 80.34% and 21.94%, respectively. While there were obvious differences to some extent in the removal efficiency of pollutants between different plants, with best average removal efficiency ocuupied by Pontederia lanceolata. Pontederia lanceolata was suitable plant for different polluted water purification, Iris pseudacorus for severe polluted water purification and Pontederia cordata for short-term purification. Iris hybrids ＇Louisiana＇ could be used in four seasons with an evergreen characteristic, although it had slightly lower purification effect. Taken together, the research could provide theoretical support for preferred aquatic plants and phytoremediation to urban polluted water.
出处
《湿地科学》
CSCD
北大核心
2018年第1期85-92,共8页
Wetland Science
基金
国家自然科学基金项目(31670698)
江苏高校“青蓝工程”资助项目
江苏高校品牌专业建设工程项目(PPZY2015A063)资助
关键词
植物
城市景观污水
富营养化
铜绿微囊藻
高锰酸盐指数
净化效果
plant
urban landscape polluted water
eutrophication
Microcystis aeruginosa
permanganate in-dex
purifying effect
