摘要
为研究观赏植物对沼液的净化能力,以滴水观音、水仙、红掌、白掌、万年青、绿萝、风信子为研究对象,通过沼液水培实验,对比分析了不同植物的生长特性及其对污染物的去除效果。结果表明,万年青、白掌、红掌和滴水观音的相对生长量和适应能力明显优于其他植物;随着处理时间的延长,大部分植物对COD的去除率呈增加趋势,最终达80%左右;在处理时间为7 d时,红掌、白掌和万年青对TN的去除率均达到80%以上;7种植物对沼液中TP的去除率在整个水培期间均未超过60%。各植物对污染物的去除效果均显著优于空白组(p<0.05),且不同种类的植物之间差异明显(p<0.05)。实验表明,万年青、红掌、白掌可作为处理沼液的备选观赏植物。
To investigate the purification capacities of ornamental plants to biogas slurry,seven plants were selected to study the growth characteristics and the purification efficiencies to pollutants with the hydroponics experiments. Results showed that the relative growth and the adaptability of Rohdea japonica,Spathiphyllum kochii,Anthurium andraeanum and Alocasia macrorrhiza were significantly higher than others. The COD removal rates for most plants increasd with the hydraulic retention time increasing,and were almost 80%,finally. When the hydraulic retention time was 7 d,the TN removal rates of Anthurium andraeanum,Spathiphyllum kochii and Rohdea japonica reached to almost 80%. The TP removal rates of all plants during the experiments were below60%. The removal efficiencies of seven plants to different pollutants were significantly higher than that of control(p < 0. 05),while significant differences were exsisted among these plants(p < 0. 05). The results indicated that Rohdea japonica,Anthurium andraeanum and Spathiphyllum kochii could be selected for purifying the biogas slurry.
出处
《环境工程学报》
CAS
CSCD
北大核心
2015年第5期2061-2066,共6页
Chinese Journal of Environmental Engineering
基金
国家自然科学基金资助项目(51408493)
中央高校基本业务费专项资金(XDJK2014C188)
西南大学博士基金项目(SWU114013)
重庆市环保科技项目(2013CF-301)
国家"863"高技术研究发展计划项目(2012AA062607)
关键词
沼液
观赏植物
生长特性
处理效果
biogas slurry
ornamental plant
growth characteristics
purification efficiencies
