摘要
采用铜钱草、茅草、水竹、灯芯草4种陆生喜水植物对河道受污染水体进行净化研究。结果表明,4种植物均可以在水中正常生长。种植入水体后长出大量根系,特别是铜钱草、水竹。对水中总氮、总磷均有较好的去除效果。对水中TP的去除顺序是铜钱草>茅草>水竹>灯芯草,铜钱草和茅草对TP的去除效果最好,分别为81.7%和74.7%;对水中TN的去除顺序为茅草>灯芯草>铜钱草>水竹,茅草和灯芯草对TN的去除效果最好,分别为68.9%和68.3%,对水中的叶绿素a可以有效的去除,抑制藻类的生长。试验结果表明:4种植物能有效提高水体透明度和水体观感。
The plants-penny grass(cenetlla asiatica(l.) urban minor(blume)sherff),couch grass(imperata cylindrical),tradescantia(p.heteroclada oliver),juncus(juncus effusus L.var.decipiens buchen) are used to purify polluted riverway.The plants can grow normally in water.They branch out a lot of roots after being grown in water.The plants are quite able to remove total nitrogen(TN) and total phosphotus(TP).The efficiency of removing TP is penny grass couch grass tradescantia juncus,penny grass and cogongrass can effectively remove TP(81.7% and 74.7%).The efficiency of removing TN is couch grass juncus penny grass tradescantia,,cogon grass and juncus can effectively remove TN(68.9% and 68.3%).The plants can effectively remove Chl-a in water,and restrain the growth of algae.The results show that plants can improve the transparency of water greatly.
出处
《中国农村水利水电》
北大核心
2010年第6期56-58,共3页
China Rural Water and Hydropower
作者简介
张凤娥(1964-),女,硕士生导师,教授,从事给排水专业教学与科研工作。