高氨氮对湿地植物污水净化效果的影响  

STUDY ON WETLAND PLANTS FOR SEWAGE PURIFICATION UNDER HIGH AMMONIA NITROGEN CONCENTRATION

作　　者：苏小红[1] 王文国[1] 顾新娇[1] 潘科[1] 胡启春[1] 

机构地区：[1]农业部沼气科学研究所,成都610041

出　　处：《环境工程》2014年第1期29-32,共4页Environmental Engineering

基　　金：国家科技重大专项"水体污染控制与治理"项目(2009ZX07425-003)

摘　　要：为研究湿地植物在高氨氮浓度下对污水中有机物、总氮、总磷、氨氮等污染物的净化效果,选用5种常用湿地植物包括菖蒲(Acorus calamus)、芦竹(Arundo donax)、茭白(Zizania latifolia)、旱伞草(Cyperus alternifolius)和再力花(Thalia dealbata)。通过模拟垂直潜流人工湿地污水系统,处理氨氮浓度分别为25,55,108 mg/L的污水。实验结果表明:当进水氨氮浓度为25 mg/L时,湿地植物对COD、TP、TN、NH+4-N的去除效果随HRT的增加呈现上升趋势;当提高进水氨氮浓度时,湿地植物对有机物、氮、磷的去除效果下降显著,氨氮浓度越高,去除效果越差;再力花和旱伞草的去除效果明显好于菖蒲、茭白、芦竹,所以再力花、旱伞草可以用于氨氮浓度较高的污水处理中。Study on wetland plants was carried out for sewage purification under high ammonia nitrogen concentration, especially for testing the result of removing organic matter, ammonia nitrogen, total nitrogen and total phosphorus. The five common wetland plants had been used as follows： Acorus calamus, Arundo donax, Zizania latifolia, Cyperus alternifolius and Thalia dealbata. By vertical subsurface flow constructed wetland, concentration of ammonia nitrogen in the sewage was selected as 25, 55, 108 mg/L. The results showed a positive trend on removal effect of COD, TP, TN, and NH^4＋ -N with HRT increased, when influent ammonia nitrogen concentration was 25 mg/L. While increasing influend ammonia nitrogen concentration, the removing effects on organic matter, nitrogen and phosphorus went down significantlly. The higher the concentration of ammonia nitrogen, the poorer the removing effect. Comparablly, the remove results by Z. latifolia and C. alternifolius were obviously better than by A. calamus, Z. latifolia, and A. donax.

关 键 词：氨氮 湿地植物 净化效果 人工湿地 

分 类 号：X703[环境科学与工程—环境工程]