Denitrification influences of nitrogen loading under salinity condition on the ANAMMOX-EGSB reactor

doi:10.11894/1005-829x.2018.38(5).035

Abstract

Abstract: The denitrification influences of nitrogen loading under salinity condition on ANAMMOX-EGSB reactor have been investigated. The results show that when the reactor is under 18 g/L of salinity and the influent nitrogen loading rate(NLR) is less than 2.26 kg/(m³·d),the increase of NLR does not have obvious influence on denitrification capability. When the NLR is increased to 2.74 kg/(m³·d),the water quality of effluent of the reactor is worsened,and the removing rates of ammonium,nitrite and TN are all reduced to 30%. The NLR bearing capacity of the reactor is weakened under salinity condition,and the salinity could prolong the recovering time of reactor performances. The analysis on the micro-flora structures shows that most bacteria are Planctomycetes at the level of phylum and Candi-datus Jettenia at the level of genus.

Key words: salinity, ANAMMOX, nitrogen load rate(NLR), denitrification performance, microorganism

摘要： 考察了盐度条件下氮负荷（NLR）对ANAMMOX-EGSB的脱氮影响。结果表明，18 g/L盐度条件下，当进水NLR低于2.26 kg/（m³·d）时，NLR提升对反应器的脱氮性能影响不大；当NLR提升至2.74 kg/（m³·d）时，反应器出水水质恶化，氨氮、亚硝氮及总氮去除率均降至30%以下。盐度条件下，反应器对NLR的承载能力减弱，且盐度会致使反应器的性能恢复时间延长。微生物群落结构分析表明，反应器中的细菌在门水平上主要为Planctomycetes门，在属水平上主要为Candidatus Jettenia属。

关键词: 盐度, 厌氧氨氧化, 氮负荷, 脱氮性能, 微生物

CLC Number:

X703.1

Deng Xiongwen, Wang Han, Li Hanxiang, Zeng Qiansong, Fang Fang, Guo Jinsong. Denitrification influences of nitrogen loading under salinity condition on the ANAMMOX-EGSB reactor[J]. INDUSTRIAL WATER TREATMENT, 2018, 38(5): 35-39.

邓雄文, 王晗, 李瀚翔, 曾前松, 方芳, 郭劲松. 盐度条件下氮负荷对ANAMMOX-EGSB的脱氮影响[J]. 工业水处理, 2018, 38(5): 35-39.

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