| 瞬时NH4+-N冲击对微压反应器污染物去除效果的影响 |
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| 引用本文： | 王帆,刘万琦,蒋维卿,孙雪建,王喜超,边德军.瞬时NH4+-N冲击对微压反应器污染物去除效果的影响[J].环境工程,2022,40(10):55-61. |
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| 作者姓名： | 王帆 刘万琦 蒋维卿 孙雪建 王喜超 边德军 |
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| 作者单位： | 1. 长春工程学院 水利与环境工程学院, 长春 130012; |
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| 基金项目： | 吉林省科技发展计划项目(202002027JC)国家自然科学基金项目(51878067) |
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| 摘 要： | 探究NH4+-N冲击对微压反应器(MPR)污染物去除效率的影响,通过提高单周期瞬时进水NH4+-N浓度至40,50 mg/L,对MPR进行冲击。结果表明:常规负荷下,MPR具有良好的污染物去除效果。冲击周期降解历时数据显示,在进水40 mg/L NH4+-N冲击周期内进水ρ(COD)、ρ(NH4+-N)、ρ(TP)分别为192.58,40.96,2.52 mg/L,出水分别为38.16,0.70,0.26 mg/L,去除效果无显著变化,出水TN浓度上升至16.04 mg/L。增加NH4+-N冲击浓度至50 mg/L,冲击周期内NH4+-N降解速率不变,反硝化速率提高,出水ρ(NH4+-N)、ρ(TN)升高至4.95,17.62 mg/L,TN降解主要受碳源不足影响;TP去除效果无变化,冲击后57个周期内除磷系统受到影响,出水TP出现较大波动,最高浓度达到2.6 mg/L。以上结果表明,MPR系统受到NH4+-N冲击后1个周期内,脱氮性能即可恢复,说明冲击对脱氮系统造成了可逆的短期影响,但对除磷系统造成不可逆的长期影响。
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| 关 键 词： | NH4+-N浓度 瞬时冲击 MPR 去除效果 |
| 收稿时间： | 2021-10-10 |
EFFECT OF INSTANTANEOUS NH4+-N SHOCK ON POLLUTANTS REMOVAL IN A MICRO PRESSURE REACTOR |
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| Affiliation: | 1. School of Water Concenancy and Environmental Engineering, Changchun Institute of Technology, Changchun 130012, China;2. Key Laboratory of Urban Sewage Treatment of Jilin Province, Changchun Institute of Technology, Changchun 130012, China |
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| Abstract: | The effect of NH4+-N shock on pollutants' removal efficiency of the micro-pressure reactor (MPR) was investigated by increasing the single cycle instantaneous influent NH4+-N concentration to 40 and 50 mg/L and shocking the MPR. The results showed that the MPR had a good pollutant removal effect under conventional load. The degradation epoch of the shock cycle showed that in the influent 40 mg/L NH4+-N shock cycle, the influent concentrations of COD, NH4+-N, and TP were 192.58, 40.96, and 2.52 mg/L, and the effluent concentrations were 38.16, 0.70, and 0.26 mg/L, respectively, with no significant changes in the removal effect, and the effluent TN concentration increased to 16.04 mg/L. When the NH4+-N concentration shock was increased to 50 mg/L, the NH4+-N degradation rate remained unchanged and the denitrification rate increased during the impact cycle, and the effluent NH4+-N and TN concentrations increased to 4.95 and 17.62 mg/L. TN degradation was mainly affected by the lack of carbon source, and there was no change in TP removal effect. The above results showed that the nitrogen removal performance of the MPR system recovered within 1 cycle after the impact of NH4+-N, indicating a reversible short-term effect on the nitrogen removal system. An irreversible long-term effect on the phosphorus removal system was observed. |
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