[1]宋壮壮,吕爽,周顺,等.NO2--N/NH4+-N对SAD脱氮除碳性能的影响[J].中国给水排水,2022,38(21):20-29.
　SONGZhuang-zhuang,LüShuang,ZHOUShun,et al.Effect of NO2--N to NH4+-N Ratio on Nitrogen and Carbon Removal Performance of Simultaneous ANAMMOX and Denitrification Process[J].China Water & Wastewater,2022,38(21):20-29.
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NO2--N/NH4+-N对SAD脱氮除碳性能的影响

中国给水排水[ISSN:1000-4062/CN:12-1073/TU] 卷: 第38卷 期数: 2022年第21期 页码: 20-29 栏目: 出版日期: 2022-11-01
Title:
Effect of NO2--N to NH4+-N Ratio on Nitrogen and Carbon Removal Performance of Simultaneous ANAMMOX and Denitrification Process
作者:
宋壮壮1， 吕爽2， 周顺3， 张智3
（1.江苏省规划设计集团有限公司 市政规划与工程设计院，江苏 南京 210036；2.中国市政工程华北设计研究总院有限公司 江苏分公司，江苏 南京 210019；3.重庆大学 环境与生态学院，重庆 400045）
Author(s):
SONG　Zhuang-zhuang1， Lü　Shuang2， ZHOU　Shun3， ZHANG　Zhi3
（1. Municipal Planning and Engineering Design Institute， Jiangsu Provincial Planning and Design Group Co. Ltd.， Nanjing 210036， China； 2. Jiangsu Branch， North China Municipal Engineering Design & Research Institute Co. Ltd.， Nanjing 210019， China； 3. College of Environmental and Ecology， Chongqing University， Chongqing 400045， China）
关键词:
NO2--N/NH4+-N;  厌氧氨氧化耦合反硝化（SAD）;  脱氮除碳;  污泥活性
Keywords:
NO2--N to NH4+-N ratio;  simultaneous ANAMMOX and denitrification (SAD);  nitrogen and carbon removal;  sludge activity
摘要:
为了探究不同基质比（NO2--N/NH4+-N）对厌氧氨氧化耦合反硝化（SAD）工艺脱氮除碳性能的影响，分别进行连续流试验和批式试验。结果表明：经过进水NO2--N/NH4+-N的波动后，SAD工艺对NO2--N的去除效果保持良好，NH4+-N去除率略有下降，但仍能保持在90%以上，COD去除率较为稳定，表明SAD工艺对进水NO2--N/NH4+-N波动具有良好的抗冲击性。当进水NO2--N/NH4+-N为1.69~1.95和1.38~1.42时，反硝化作用得到增强，ΔNO2--N/ΔNH4+-N和反硝化脱氮贡献率较高，出水NO3--N浓度和ΔNO3--N/ΔNH4+-N也高于进水NO2--N/NH4+-N为0.58~0.60和0.77~0.83的阶段。当进水NO2--N/NH4+-N为1.69~1.95时，污泥的反硝化活性显著增强。基质比恢复后厌氧氨氧化活性有所下降，上层污泥的反硝化活性有所下降，下层污泥的反硝化活性有所上升并高于上层污泥。在典型周期内，前10 h NO2--N和NH4+-N浓度呈线性下降趋势，10 h后逐渐趋于稳定；NO3--N浓度先升后降，在10~12 h达到极大值，且随着进水NO2--N/NH4+-N的增加，NO3--N浓度的极大值逐渐增大；反应24 h后，ΔNO2--N/ΔNH4+-N、COD去除率和反硝化脱氮贡献率都随着进水NO2--N/NH4+-N的增加整体呈上升趋势。
Abstract:
Continuous flow test and batch test were carried out respectively to investigate the effect of different substrate ratios (NO2--N/NH4+-N) on nitrogen and carbon removal performance of simultaneous ANAMMOX and denitrification (SAD) process. During the fluctuation of influent NO2--N/NH4+-N, the NO2--N removal effect of SAD process remained good. The removal rate of NH4+-N decreased slightly, but still remained above 90%. The removal rate of COD was relatively stable, indicating that the SAD process had good impact resistance to influent NO2--N/NH4+-N fluctuation. When the influentNO2--N/NH4+-N were 1.69-1.95 and 1.38-1.42, denitrification was enhanced, and the NO2--N/NH4+-N and contribution rate of denitrification for nitrogen removal was higher. The effluent NO3--N and ΔNO3--N/ΔNH4+-N were also higher than those when the influent NO2--N/NH4+-N were 0.58-0.60 and 0.77-0.83. When the influent NO2--N/NH4+-N was between 1.69 and 1.95, the denitrification activity of sludge was significantly enhanced. After the recovery of NO2--N/NH4+-N, the ANAMMOX activity and the denitrification activity of the upper sludge decreased, and the denitrification activity of the lower sludge increased and was higher than that of the upper sludge. In a typical cycle, NO2--N and NH4+-N concentrations decreased linearly in the first 10 h, and gradually stabilized after 10 h. NO3--N concentration increased first and then decreased, which reached a maximum value in 10-12 h. With the increase of the influent NO2--N/NH4+-N, the maximum NO3--N concentration gradually increased. After 24 h of reaction, ΔNO2--N/ΔNH4+-N, COD removal rate and contribution rate of denitrification for nitrogen removal all showed an overall upward trend with the increase of the influent NO2--N/NH4+-N.
更新日期/Last Update: 2022-11-01