中文摘要：

以风车草、香根草、再力花、芦荻、美人蕉5种湿地植物作为低C/N比生活污水的反硝化碳源材料。静态碳源释放实验中,5种湿地植物释碳能力为风车草〉再力花〉芦荻〉香根草〉美人蕉,风车草COD释放量最高,可达（129.2±6.2）mg/（g·L）,其TN、TP的释放量相对较低。静态反硝化脱氮实验中,风车草和再力花脱氮效果最好,反硝化出水中硝态氮质量浓度均降低至3mg/L左右,硝态氮去除率均达88%左右,出水COD均在100mg/L左右,COD去除率均达到84%左右。在低C/N比生活污水反硝化脱氮中试实验中,以风车草为反硝化碳源,出水中TN、COD去除率可分别达到73%、75%左右,说明风车草是一种良好的低C/N比生活污水深度处理的反硝化碳源材料。

英文摘要：

Five wetland plants,including Clinopodium urticifolium, Vetiver, Thalia dealbata, Arundo donax and Canna ,were selected to investigate their potential as carbon source for denitrification. The release carbon source ability of these five wetland plants in the order： Clinopodium urticifolium 〉 Thalia dealbata 〉 Arundo donax Vetiver 〉 Canna ,in which Clinopodium urticifolium released the highest COD amount of （129.2±6.2） mg/（g·L） in the static release experiment, while its TN and TP residuals in water column were relatively low. The static denitri-fication experiment showed that removal rates of nitrate were about 88% and effluent nitrate was about 3 mg/L,and COD removal rates were about 84% with effluent COD about 100 mg/L when Clinopodiurn urticifolium and Thalia dealbata was selected as denitrification carbon source. Pilovscale tests were further conducted where the removal rates of TN and COD were 73% and 75% repectively,which proved that Clinopodium urticifolium was an efficient carbon source for the treatment of sewage with low C/N ratio.