In order to evaluate the distribution characteristics of microbial populations involved in nitrogen removal, field experiments of a subsurface wastewater infiltration system (8 sub-cells, length × width = 20 m × 15 m for each subcell) were carried out for 360 days. The results indicated that hydraulic and pollutant loading rate, oxygen reduction potential and wastewater shunt distribution have a significant effect on the distributions of nitrifying and denitrifying bacteria. For nitrifying bacteria, hydraulic and pollutant loading rates, oxygen reduction potential and carbon source supplement method have negative influence on its population, especially near the wastewater distribution area. The changes of denitrifying bacteria distribution are opposite to those of nitrifying bacteria. Taking into account the nitrogen removal efficiency, hydraulic and pollutant loading rate are proposed within a range from 0.065 to 0.081 m3/ m2·d and 9.3 to 16.8 g BOD/m2·d, respectively. Intermittent operation mode is recommended and carbon source is suggested to introduce into the 65 cm depth.
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机译：为了评估参与脱氮的微生物种群的分布特征，对地下污水渗透系统（8个子电池，每个子电池的长×宽= 20 m×15 m）进行了为期360天的现场试验。结果表明，水力和污染物负荷率，氧还原势和废水分流分布对硝化和反硝化细菌的分布有显着影响。对于硝化细菌，水力和污染物的负载率，氧还原电位和碳源补充方法对其种群有负面影响，尤其是在废水分布区域附近。反硝化细菌分布的变化与硝化细菌的变化相反。考虑到氮的去除效率，建议水力和污染物的装载速率分别为0.065至0.081 m3 / m2·d和9.3至16.8 g BOD / m2·d。建议采用间歇操作模式，并建议将碳源引入65厘米深度。
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