生物滞留池中6种植物的氮磷吸收动力学特征  

Characteristics of Nitrogen and Phosphorus Absorption Kinetics by Six Species of Plants in Bioretention Ponds

作　　者：杨烨 董鹏 陆敏博 YANG Ye;DONG Peng;LU Minbo(CCDIExploration&Design Consultant Co.,Ltd.,Suzhou 215000,China;College of Civil Engineering,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]悉地<苏州>勘察设计顾问有限公司,江苏苏州215000 [2]南京林业大学土木工程学院,江苏南京210037

出　　处：《净水技术》2023年第3期143-150,共8页Water Purification Technology

摘　　要：为了筛选出对氮、磷等营养物具有高效吸收性能的生物滞留池植物,通过营养物耗竭法研究了翠芦莉、美人蕉、黄菖蒲、再力花、鸢尾和雨久花6种常见植物对硝态氮(NO-3-N)、氨氮、溶解性总磷(TSP)的吸收动力学特征。结果表明,48 h水力停留时间内6种受试植物对NO-3-N的去除率在12.89%~53.58%,对氨氮的去除率在36.38%~88.25%,6种植物对氨氮亲和力和吸收效果高于NO-3-N;对TSP的亲和力和吸收效果较好,去除率最高可达80%。考虑雨水中污染物的去除效果,NO-3-N含量较高时,宜选用黄菖蒲,低、中浓度NO-3-N含量宜选用鸢尾;氨氮含量较低时,宜选用翠芦莉,中、高浓度氨氮含量宜选用黄菖蒲;低浓度TSP宜选用翠芦莉,中、高浓度TSP宜选用雨久花。In order to screen out the plants with high absorption capacity of nitrogen and phosphorus,the absorption kinetics of nitrate nitrogen(NO-3-N),ammonia nitrogen and total dissolved phosphorus(TSP)by six common plants,namely,Ruellia brittoniana,Canna indica L.,Iris pseudacorus L.,Thalia dealbata Fraser,Iris tectorum Maxim.and Monochoria korsakowii Regel&Maack were studied by nutrient depletion method.The results showed that the removal rates of NO-3-N and ammonia nitrogen for 6 tested plants were 12.89%~53.58%and 36.38%~88.25%,respectively,and the affinity and absorption of ammonia nitrogen for 6 plants were higher than those of NO-3-N within 48 hours.The affinity and absorption of TSP were better,and the removal rate was up to 80%.Considering the removal effect of pollutants in rain water,When the content of NO-3-N is high,Acorus calamus is the best choice,and Iris tectorum is the best choice for low and medium concentration of NO-3-N;when the ammonia nitrogen content is low,it is better to choose Ruellia brittoniana,and when the ammonia nitrogen content is medium or high,it is better to choose Acorus calamus;Ruellia brittoniana is suitable for low concentration TSP,Monochoria korsakowii is suitable for medium and high concentration TSP.

关 键 词：翠芦莉 美人蕉 黄菖蒲 再力花 鸢尾 雨久花 生物滞留池 氮磷 吸收动力学 

分 类 号：X522[环境科学与工程—环境工程]