水生植物对广州湿地水体污泥的净化作用研究

Study on Water Sludge Purification by Aquatic Plants in Wetland of Guangzhou

在中国的城市化进程中产生越来越多的河涌污泥,利用水生植物对污泥进行修复是有效的方法之一。基于湿地污泥植物净化技术课题的试验研究,以广州海珠湿地为研究对象,通过一年4个季度的观察、数据采集,以及总氮(TN)、总磷(TP)和植物生理生态等关键指标测定,比较分析13种水生植物对富营养化污泥TN、TP的去除效能,为课题下一阶段筛选适应性强、去氮和去磷效果好、景观价值高的水生植物种类和梳理水生植物配置模式提供科学基础。

A large amount of sludge from brooklet is produced in the process of urbanization in China.It is an effective method on sludge purification using aquatic plants.In this paper,based on the research project of purification technique for wetland sludge by aquatic plants,13 emergent aquatic plant species growing in eutrophication of the sludge from brooklet were investigated in Guangzhou.At every season during the experimentation,the total nitrogen(TN)and total phosphorus(TP)contents of the sludge and plants'organs were determined,as well as plants'growth and ecophysiological indexes.The removal rate of TN and TP of sludge by 13 emergent aquatic plant species were analyzed.According to the conclusions of preliminary study,the plant species with good adaptability,higher ornamental value will be selected,and then the collocation patterns by the selected aquatic plant species will be established in the study of next stage.