摘要
以汉石桥潜流湿地为研究对象,通过对2014年10月-次年5月中水出水水体氮磷元素去除率分析,研究潜流湿地对水中氮磷元素的去除效果。结果表明:TN、NH_4^+、NO_2~–、NO_3~–、TP、PO_4^(3–)平均去除率为23.09%,47.68%,39.66%,29.96%,23.79%,29.73%,且各个指标去除率均表现为先降低后增加的趋势,整体去除率均为正值,说明该潜流湿地在秋冬春季具有一定的处理效果;p H与温度为制约该潜流湿地氮元素去除的重要因素,而磷元素去除受到温度影响较小;虽然冬季潜流湿地仍有一定的去除氮磷的效果,但去除率过低,应注重保温,才能使潜流湿地更有效率的全年运行。
Employing the subsurface constructed wetlands in Hanshiqiao Nature Reserve as the research area,this studyanalyzed the nitrogen and phosphorus removal rate of the effluent water from October2014to May2015.The research resultsindicate the average removal efficiencies of TN,NH4+,NO2–,NO3–,TP,PO43– in the subsurface constructed wetlands were23.09%,47.68%,39.66%,29.96%,23.79%and29.73%,respectively.The removal rate of each index showed an increasing trend at thebeginning then a decreasing trend.The overall removal rate was positive,which confirmed the nitrogen and phosphorus removaleffect of the subsurface constructed wetlands in spring,autumn and winter.The results also revealed that pH and temperatureacted as important restricting factors during the wetland nitrogen removal.However,the temperature had little influence on theremoval rate of phosphorus.Although the subsurface constructed wetlands reserved the ability of nitrogen and phosphorusremoval in winter,the removal rate was comparatively low.Therefore the research suggests to maintain a certain temperature tokeep the efficient annual operation of the subsurface constructed wetlands.
作者
魏佳明
崔丽娟
李伟
雷茵茹
平云梅
孙宝娣
于菁菁
梁钊瑞
WEI Jiaming;CUI Lijuan;LI Wei;LEI Yinru;PING Yunmei;SUN Baodi;YU Jingjing;LIANG Zhaorui(Institute of Wetland Research, Chinese Academy of Forestry, Beijing 100091, China;The Beijing Key Laboratory of Wetland Ecological Function and Restoration, Beijing 100091, China;Beijing Hanshiqiao National Wetland Ecosystem Research Station, Beijing 101399, China)
出处
《生态科学》
CSCD
2017年第1期43-47,共5页
Ecological Science
基金
中央级公益性科研院所基本科研业务费专项汉石桥潜流湿地N污染去除的机制研究(CAFYBB2014QA029)
关键词
潜流湿地
氮
磷
温度
subsurface constructed wetland
nitrogen
phosphorus
temperature
