【摘要】 采用生物膜反应器处理人工合成高氨氮废水,研究了低溶解氧(DO)条件反应器亚硝化反应的启动和稳定运行,并考察了不同DO浓度对硝化过程中亚硝态氮积累的影响。结果表明:在30±2℃,进水氨氮为300mg/L左右,当DO=2.0±0.1mg/L,亚硝态氮累积率在80%以上;当DO为1.2～1.5mg/L时,亚硝态氮累积率在90%以上;当DO为2.5～2.8mg/L时,亚硝态氮累积率在50%左右。因此,反应器中通过控制DO实现稳定亚硝化是可行的。更多还原

【Abstract】 Based on a benchscale experiment using a bio-film reactor, this paper discusses the nitritation efficiency, which is believed to determine the overall rate of nitrogen elimination, investigating the stability of nitritaion at low DO concentration, as well as effects of different ranges of DO concentration on nitrite accumulation. It is concluded that stabilized nitritation can be realized in the reactor through control of DO concentration.更多还原