摘要
以深圳市污染河流布吉河河水为研究对象,通过在接触氧化工艺中种植水生植物,考察复合工艺对污染河水的修复效果及水生植物段的净化作用。研究表明,总氮(TN)、氨氮(NH4+—N)去除率在金鱼藻种植前后均有显著差异(p<0.01)。在种植金鱼藻前后,TN的平均去除率分别为(35.9±4.3)%和(56.9±5.1)%,NH4+—N的平均去除率分别为(43.6±3.7)%和(72.5±4.6)%。同时,功能菌群数量调查也表明,水生植物能够有效增加水体中微生物的生物量,特别是硝化细菌数量,使其占总氮循环相关细菌数量的比例从种植植物前的0.12%增长到种植植物后的0.39%,优化了水体中氮循环相关菌群的数量结构分布,增强了系统的脱氮能力。
Taking Buji stream water （Shenzhen, China） as a study object, this study evaluated the pollutant removal performances by biological contact oxidation process （BCOP） augmented with aquatic plants. A set of physico-chemical and biochemical parameters were monitored and the microbial numbers were determined by most probable number （MPN）. Results indicated that there were very significant differences in the removal efficiencies of total nitrogen（TN） and NH4^＋-N （p 〈0.01 ） as compared with no aquatic plants in BCOP. The average removal rate of TN and NH4^＋-N （35.9 percent±4.3 percent, 43.6 percent±3.7 percent） were obtained in non-augmented BCOP. After augmentation, the removal rates of TN and NH4^＋-N reached 56.9 percent±5.1 percent and 72.5 percent±4.6 percent respectively with low effluent TN and NH4^＋-N. Likewise, aquatic plants increased the MPN of nitrogen-related bacteria significantly, especially nitrifying bacteria. The percentage of nitrifying bacteria in total number of bacteria increased from 0.12 percent to 0.39 percent, which optimized the community structure of nitrogen-related bacteria and enhanced denitrification capacity.
出处
《东北林业大学学报》
CAS
CSCD
北大核心
2010年第8期91-94,共4页
Journal of Northeast Forestry University
关键词
污染河水
水生植物
生物接触氧化
氮循环相关细菌
硝化细菌
Polluted stream water
Aquatic plants
Biological contact oxidation process
Nitrogen-related bacteria
Nitrifying bacteria
