Biodenitrification using solid carbon sources is a cost-effective way for nitrate removal. In the study, wheat straw, cotton, poly(butylene succinate), and newspaper was chosen as the carbon source to compare the denitrification efficiency and bacterial communities in constructed wetlands. Parameters including COD, NO₃⁻-N, NO₂⁻-N and total nitrogen (TN) were analyzed. Results indicated that newspaper provided significantly higher NO₃⁻-N and TN removal efficiency than the other three solid carbon sources in low-temperature condition. Moreover, both newspaper and wheat straw allowed high NO₃⁻-N and TN removal efficiency in high-temperature condition. According to pyrosequencing analysis, denitrifying bacteria Dechloromonas and Thauera were the predominant genus in the anaerobic zone of CO- (3.92 and 2.35%, respectively), WS- (1.97 and 1.02%, respectively) and NP-CWs (1.71 and 1.31%, respectively). Genus of Levilinea was enriched in NP- (1.02%) and WS-CWs (0.91%). Furthermore, genus Paludibacter (2.69%) and Saccharofermentans (3.14%) showed high relative abundance in WS-CWs.

使用固态碳源进行生物脱硝是去除硝酸盐的一种经济有效的方法。在研究中，选择了麦草，棉花，聚丁二酸丁二酯和报纸作为碳源，以比较人工湿地的反硝化效率和细菌群落。分析了COD，NO ₃ ^-- N，NO ₂ ^-- N和总氮（TN）等参数。结果表明，在低温条件下，报纸提供的NO ₃ ^-- N和TN去除效率明显高于其他三种固体碳源。此外，无论是报纸，麦秸允许高NO ₃ ^--高温条件下的N和TN去除效率。根据焦磷酸测序分析，反硝化细菌Dechloromonas和Thauera是CO-（分别为3.92和2.35％），WS-（分别为1.97和1.02％）和NP-CW（分别为1.71和1.31％）的厌氧区的主要属。分别）。Levilinea属富含NP-（1.02％）和WS-CWs（0.91％）。此外，属Paludibacter（2.69％）和Saccharofermentans（3.14％）显示在WS-CWS高相对丰度。