水蚯蚓对硝化细菌活性影响的试验研究

采用SBR反应器富集培养富含硝化细菌的活性污泥,利用填料挂载的方法向SBR反应器投加水蚯蚓,考察了水蚯蚓对SBR反应器硝化效率及硝化细菌活性的影响.结果表明,SBR反应器挂载水蚯蚓后,SBR系统的硝化速率降低了16.65%,NO2--N氧化率减少量约为24%.通过对SBR系统单一周期各形态氮素浓度变化规律进行考察,发现...

Effect of aquatic worms on the activity of nitrifiers

Sequencing batch reactors (SBRs) seeded with activity sludge were started up to enrich nitrifiers and their nitrifying efficiencies were studied by adding aquatic worms. The results showed that the presence of aquatic worms caused a 16.65% decrease in nitrification rates and a 24% decrease in NO2- -N oxidation rates compared to the test groups (not added aquatic worms). When investigated the variation rule of N concentration in single-cycle, there was a significant accumulation of NO2--N in the test groups and the nitrification rates were nearly half of the control groups. The oxygen uptake rate (OUR) of nitrifiers was also implied that the activities of nitrifiers could be inhibited by the aquatic worms.