| 进水C/N对SNEDPR系统脱氮除磷的影响 |
| 摘要点击 1516 全文点击 512 投稿时间：2018-06-20 修订日期：2018-07-07 |
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| 中文关键词 碳氮比 同步硝化内源反硝化 (SNED) 反硝化除磷 聚磷菌 (PAOs) 反硝化聚糖菌 |
| 英文关键词 C/N ratio simultaneous nitrification-endogenous denitrification(SNED) denitrifying phosphorus removal phosphorous accumulating organisms(PAOs) denitrifying glycogen accumulating organisms |
| 作者 | 单位 | E-mail | | 都叶奇 | 青岛大学环境科学与工程学院, 青岛 266071 | d_duyeqi@163.com | | 于德爽 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 甄建园 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 王晓霞 | 青岛大学环境科学与工程学院, 青岛 266071 | elainewangxx@163.com | | 陈光辉 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 唐鹏 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 王钧 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 毕春雪 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 巩秀珍 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 黄硕 | 青岛大学环境科学与工程学院, 青岛 266071 | | | 刘诚诚 | 青岛大学环境科学与工程学院, 青岛 266071 | |
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| 中文摘要 |
| 为了解同步硝化内源反硝化系统（SNEDPR）脱氮除磷性能，采用延时厌氧（180 min）/低氧（溶解氧0.5~2.0 mg·L-1）运行的SBR反应器，以人工配置的模拟废水为处理对象，先采用恒定进水C/N（为10），以实现SNEDPR的启动和聚磷菌（PAOs）的富集培养，再调控进水C/N值（分别为10、7.5、5和2.5），考察不同C/N对系统的脱氮除磷性能的影响.结果表明，当进水C/N为10，可实现SNEDPR的启动与深度脱氮除磷，出水PO43--P和总氮（TN）浓度分别平均为0.1 mg·L-1和8.1 mg·L-1，PO43--P去除率、TN去除率和SNED率平均值分别为99.79%、89.38%和58.0%.当进水C/N由5提高至10时，系统维持良好的脱氮除磷性能，释磷量（PRA）和SNED率分别由16.0 mg·L-1和48.0%提高至24.4 mg·L-1和69.2%；当C/N为10时，TN和PO43--P去除率最高达94.5%和100%；当C/N为2.5时，系统失去脱氮、除磷性能，PRA和SNED率仅为1.36 mg·L-1和10%.在系统稳定运行阶段（C/N为10、7.5和5），SNED率达85.9%，出水NH4+-N、NOx--N和PO43--P浓度平均为0、8.1和0.1 mg·L-1. |
| 英文摘要 |
| To determine the performance of nitrogen and phosphorus removal within a simultaneous nitrification endogenous denitrification system (SNEDPR), an extended anaerobic/low aerobic (dissolved oxygen:0.5-2.0 mg·L-1)-operated sequencing batch reactor (SBR) was fed with simulation wastewater. The SBR was initiated under a constant influent C/N ratio of 10, with the simultaneous enrichment of polyphosphate-accumulating organisms (PAOs). It was then investigated at different influent C/N ratios of 10, 7.5, 5, and 2.5. The experimental results indicated that, when the influent C/N ratio was 10, SNEDPR could be successfully started up. The effluent PO43--P and total nitrogen (TN) concentrations were 0.1 mg·L-1 and 8.1 mg·L-1. PO43--P efficiency, TN efficiency, and SNED efficiency were 99.79%, 89.38%, and 58.0%, respectively. When the influent C/N ratio increased from 5 to 10, the nitrogen and phosphorus removal performance of the system improved with PRA, and SNED efficiency increased from 16.0 m·L-1 and 48.0% to 24.4 mg·L-1 and 69.2%, respectively. When the C/N ratio was 10, the TN and PO43--P removal efficiencies increased to 94.5% and 100%, respectfully. When the C/N ratio was decreased to 2.5, the nitrogen and phosphorus removal performance of the system decreased. The PRA and SNED efficiencies were only 1.36 mg·L-1 and 10%, respectively. During the stable phase of the system (C/N ratio were 10, 7.5 and 5), SNED efficiency reached to 85.9%, with the average effluent concentration of NH4+-N, x--N, and PO43--P being 0.0, 8.1, and 0.1 mg·L-1, respectively. |
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