中国海洋大学学报（自然科学版）2019，Vol.49Issue(2)：98-105,8.DOI:10.16441／j.cnki.hdxb.20170431
不同水位垂直流人工湿地中植物及微生物特征
Characteristics of Plant and Nitrogen Transformation Microorganism in Vertical Flow Constructed Wetlands with Various Saturated Water Level
摘要
Abstract
The aim of this study is to analyze the effect of water level on the removal of nitrogen and or‐ganic ,investigate the plant contributions for T N and T P removal ,and explain the variation of nitrogen transformation microorganism in four continuous‐feed vertical flow constructed w etlands (V FCWs ). T hree VFCWs were planted with I ris pseudacorus and operated with different water levels (19 ,51 and 84 cm ) ,and the other one w as non‐planted w ith 51 cm w ater level .T he results indicated that the re‐moval efficiency of nitrogen and organic w ere significantly different among four V FCWs (p＜0?05).T he planted w etland w ith 51 cm w ater level achieved the best T N removal efficiency of 67?4% ～79?2%,and the highest removal efficiencies of N H +4 ‐N (85?3% ～93?0%) and COD (81?8% ～92?9%) w ere ob‐served in the w etland w ith 19 cm w ater level .T he I ris p seudacorus g rew w ell and show ed potential for enhancing nutrient purification in V FCWs w ith three different w ater levels .Plant uptake accounted for 19?2% ～27?3% of T N and 14?7% ～19?2% of T P removed in the V FCW systems .T N and T P contents (19?8～22?8 and 1?5～1?8 mg／g) and T N and T P uptake by plants(33?2～52?9 and 2?6～4?7 mg／m2 ·d) in above‐ground tissue w ere significantly higher than those in below‐ground tissue ,w hich indicated that the above‐ground portion played a more significant role in plant uptake .The nitrogen transformation mi‐crobial population of surface layer significantly increased w ith domestication and cultivation in the V FCWs .T he populations of nitrosobacteria and nitrobacteria (104 ～106 and 105 ～107 M PN／g ) reduced with the increasing w ater level ,w hile the denitrifying bacteria (103 ～106 M PN／g ) increased .关键词
垂直流人工湿地/水位/湿地植物/功能菌Key words
vertical flow constructed w etland/saturated water level/w etland plant/nitrogen transfor‐mation microorganism分类
资源环境引用本文复制引用
刘国臣,王福浩,梁家成,佘宗莲..不同水位垂直流人工湿地中植物及微生物特征[J].中国海洋大学学报（自然科学版）,2019,49(2):98-105,8.基金项目
国家水体污染控制与治理科技重大专项(2014ZX07203-008)资助 （2014ZX07203-008）
