%0 Journal Article
%T Difference of P Content in Different Area Substrate of Constructed Wetland<br>人工湿地不同区域基质磷含量的差异分析
%A CAO Xue-ying
%A CHONG Yun-xiao
%A YU Guang-wei
%A ZHONG Hai-tao
%A <br>曹雪莹
%A 种云霄
%A 余光伟
%A 仲海涛
%J 环境科学
%D 2012
%I 
%X Adsorption of substrate is the main removal mechanisms of phosphorus in constructed wetland. It is easily impacted by various environmental factors existing in the wetland bed. The contents of substrate TP and the main inorganic P in different areas of both horizontal sub-surface flow constructed wetland with plant and one without plant were measured after treating wastewater five months. Different areas of the wetland with plant differed greatly in the substrate TP. Rhizosphere substrate in front area had the highest TP content and achieved 0.75 g·kg-1, and the TP content of non-rhizosphere substrate in back area was only 0.21 g·kg-1. The TP content of substrate in different areas of the wetland without plant had a little variety and ranged only between 0.21 and 0.27 g·kg-1. Averagely, the substrate TP content in the wetland with plant was higher than the one in the wetland without plant. The phosphorous with Fe-bound (Fe-P), Al-bound (Al-P), and Ca-bound (Ca-P) were main inorganic phosphorous existing in the substrate in both wetlands, their contents in different areas substrate all increased, compared with the one before experiment. Fe-P and Al-P in different substrates in both wetlands had a similar variety. Their content between rhizosphere and intermediate substrate of front area in the wetland with plant and other area substrate in both wetlands differed greatly because the former increased greatly. Compared with Fe-P and Al-P, the variety of Ca-P in different substrates in both wetlands was low. But the content of Ca-P in rhizosphere substrate in wetland with plant was higher than other two parts respectively in front and back areas. Obviously, the plant root had an impact on the phosphorous content of substrate in constructed wetland. For TP, Fe-P, Al-P, Ca-P and loosely sorbed phosphorous in substrate, it increased with distance of the root.
%K constructed wetland
%K total phosphorus
%K inorganic phosphorus
%K substrate
%K wastewater treatment<br>人工湿地
%K 总磷
%K 无机磷
%K 基质
%K 污水处理
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=F9526B67CD9E32E072A2E4EBA7371A0A&yid=99E9153A83D4CB11&vid=27746BCEEE58E9DC&iid=708DD6B15D2464E8&sid=774613E6D0AE5A26&eid=E9C6A2FF63CECAB9&journal_id=0250-3301&journal_name=环境科学&referenced_num=0&reference_num=30