风车草(Cyperus alternifolius)人工湿地系统氮去除及氮转化细菌研究

研究了风车草人工湿地污水处理系统TN去除率及氮转化细菌的数量。结果表明:风车草人工湿地对TN的去除率为73.8%,与无植物人工湿地系统相比较,去除率提高了17.4%。风车草人工湿地氨化细菌为7.98×10⁵cfu·g^-1(细砂),硝化细菌为1.95×10⁵MPN·g^-1(细砂),反硝化细菌为5.89×10⁴1.95×10⁴MPN·g^-1(细砂)。与无植物系统氮转化细菌相比,氨化细菌无明显差异,硝化细菌及反硝化细菌均高出1个数量级。

Nitrogen removal and nitrogen-transformation bacteria in Cyperus alternifolius constructed wetland

Nitrogen removal and nitrogen-transformation bacteria in C.alternifolius contructed wetland wastewatertreatment system were studied. The removal rate of TN in the contructed wetland with C.alternifolius were 73.8%;Compared with unplanted constructed wetland system, the removal rate of TN raised 17.4%. The amount of ammonifyingbacteria, nitrobacteria and denitrifying bacteria in C.alternifolius constructed wetland were 7.98×10⁵cfu·g^-1(sand), 1.95×10⁵MPN·g^-1 (sand) and 5.89×10⁴ MPN·g^-1 (sand), respectively; In contrast to unplanting system, the amount of ammonifyingbacteria had no obvious difference,but the amount of nitrobacteria and denitrifying bacteria were 1 order of magnitude higherthan those in the unplanted system.