高校化学工程学报Issue(6)：1480-1488,9.DOI:10.3969/j.issn.1003-9015.2015.06.028
不同曝气推流式亚硝化试验研究
Study on Nitrosation in Plug Flow Reactors under Different Aeration Conditions
摘要
Abstract
In order to investigate the influence of aeration on simulated domestic wastewater nitrosation, three different aeration gradients were applied in two corridor plug flow reactors under room temperature (22~25℃). An aerobic/anoxic/aerobic/anoxic aeration procedure was used and the total aeration rate was 6 Lmin1. Reactor R1 employed a tapered aeration mode (4.0~2.0, 4.5~1.5, 4.8~1.2 Lmin1), while reactor R2 employed an increasing aeration mode(2.0~4.0, 1.5~4.5, 1.2~4.8 Lmin1). The results show that the increasing aeration mode is better than the tapered aeration mode on COD and total nitrogen removal under the same total aeration rate. The effluent COD was lower under this increasing mode with a gradient of 1.5~4.5 and 1.2~4.8 Lmin1, which satisfies the first level A criteria specified in the Discharge Standard of Pollutants.The tapered aeration mode has higher ammonia nitrogen removal loads and ammonia oxidation rates. The per ammonia oxidation rate was 58.6% and the per nitrite accumulation rate was over 95% under a gradient of 4.8~1.2 Lmin1, and the per ratio of nitrite to ammonia was 1.34 in effluent, which meets the demand of the ANAMMOX process.关键词
常温/模拟生活废水/推流式/亚硝化/渐减曝气/渐升曝气Key words
normal temperature/simulated domestic wastewater/plug flow/nitrosation/tapered aeration/increasing aeration分类
资源环境引用本文复制引用
周利军,李冬,张玉龙,范丹,张肖静,张杰..不同曝气推流式亚硝化试验研究[J].高校化学工程学报,2015,(6):1480-1488,9.基金项目
新世纪人才支持计划(NCNT-10-0008)；国家水体污染控制与治理科技重大专项(2012ZX07202-005)。 （NCNT-10-0008）
