%0 Journal Article
%T Purification of Ammonia-Type Eutrophic Waterbody in Surface Flow Constructed Wetland at a Low Temperature<br>低温下表面流人工湿地中氨氮型富营养化水体净化研究
%A ZHENG Shao-kui
%A ZHANG Yan-yan
%A YANG Zhi-feng
%A Liu Jia-gang
%A <br>郑少奎
%A 张燕燕
%A 杨志峰
%A 刘加刚
%J 环境科学
%D 2006
%I 
%X Denitrification in three floating-plant systems, including two subspecies of hyacinth and duckweed, and foamy board system were investigated by batch cultivation at a low water temperature of 6.8 degrees C to 7.2 deggres C. Effect of initial COD on the system at a water temperature of 6.4 degrees C to 11.2 degrees C was also discussed. The results were obtained as follows: DO was one of the important factors, NH4+ -N removals in aerobic condition were 61%-88% in overall period. NH4 -N removal in plant systems was higher than that in the foamy board and control systems while differences of TN and COD removals among plant system, foamy board system and control system were determined by the floating-plant type. The increase of initial COD concentration, followed by the decrease of DO from >4 mg/L to 0 mg/L, resulted in an obvious improvement of NO; -N removal. However, it had a less effect on other water quality norms such as COD, TN and NH4+ -N.
%K surface flow constructed wetland
%K ammonia nitrogen
%K floating plant
%K low water temperature
%K denitrification<br>表面流人工湿地
%K 氨氮
%K 浮水植物
%K 低温
%K 脱氮
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=64CD0AA99DD39F69401C615B85F123EF&aid=B453340CC8CEFD8F&yid=37904DC365DD7266&vid=DB817633AA4F79B9&iid=F3090AE9B60B7ED1&sid=9EAD63ADE6B277ED&eid=EA357AD73C8E13BC&journal_id=0250-3301&journal_name=环境科学&referenced_num=2&reference_num=8