广西植物Issue(5)：642-650,9.DOI:10.3969/j.issn.1000-3142.2014.05.011
利用水生植物净化河涌污水能力的比较研究
Comparative study on the ability which utilized hydrophytes purify polluted water of river
摘要
Abstract
The paper explored the purify effects to polluted water on 8 hydrophytes:Acorus calamus,Phragmites aus-tralis,Pistia stratiotes,Canna indica,Hydrocotyle vulgaris,Alternanthera bettzickiana,Eichhornia crassipes and Myriophyllum verticillatum,they were setted up for tow groups which were cultivated in pollution water with single species and several species compound planting,and then formed 1 2 planting units,thereby carried out the comparative study on these hydrophytes purify ability to pollutants of river and compared the removal efficiency and the situation The paper explored the purify effects to polluted water on 8 hydrophytes:Acorus calamus,Phragmites aus-tralis,Pistia stratiotes,Canna indica,Hydrocotyle vulgaris,Alternanthera bettzickiana,Eichhornia crassipes and Myriophyllum verticillatum,they were setted up for tow groups which were cultivated in pollution water with single species and several species compound planting,and then formed 1 2 planting units,thereby carried out the comparative study on these hydrophytes purify ability to pollutants of river and compared the removal efficiency and the situation of growth and development.Two groups treatments all had the purification ability to pollutants,with the time exten-sion,the purified efficiency rise gradually to total phosphorus (TP),total nitrogen (TN), ammonia nitrogen (NH3-N) and turbidity;the removal efficiency of CODMn showed that in the initiate period it was higher,then the efficiency had a little drop,and rise again,reached a high purifying efficiency.In all treaments,about 30%-33.3%treatments made the primary polluted water which TP content was 4 times and TN content was 5-6 times as that ofⅤgrade water reachedⅢ grade water level,among 20%-25% of them reachedⅡgrade water level;other treaments,about 20%-30% made TP,TN content dropped 2-3 times,so that the polluted water reachedⅤgrade or nearⅤgrade water lev-el. In aspect of ammonia nitrogen content,passed through plants purification,the 58.3% planting units (treaments) had made the polluted water that ammonia nitrogen content was 6-7 times as that ofⅤgrade water reachedⅢgrade water level,among of them,about 50% planting units reachedⅡgrade water level;other about 35% units were puri-fied to approachⅤgrade water level.Seen the efficiency in whole,except of exceptional species,the purification effi-ciency of all group treatments were higher than contrast.In the respect of plant morphology,except of Pistia stra-tiotes presented some leaves lose,their root,stem and leaves of other plants were increase,showed that these plants adapt to these pollution water.The purification level and effect showed that compound species planting were better and more stable than single species planting,the purification ability of emerged aquatic plants were stronger than floating plants and submerged plants.The research results shall provide the theoretical foundation and reference for establishing the hydrophytes communities which is strong ability to purify pollutants,the landscape effect is better and the structures is stable.关键词
水生植物/污染水体/净化/水质改善Key words
hydrophytes/polluted water/purify/water quality improvement分类
农业科技引用本文复制引用
黄炜杰,李秋霞,谢泳杰,罗佳文,肖玺琴,黄玉源,李存福,汪鹏飞..利用水生植物净化河涌污水能力的比较研究[J].广西植物,2014,(5):642-650,9.基金项目
广东省大学生创新实验项目(1134711014) （1134711014）
