| 厌氧/好氧SPNDPR系统实现低C/N城市污水同步脱氮除磷的优化运行 |
| 摘要点击 2049 全文点击 811 投稿时间：2018-04-16 修订日期：2018-05-09 |
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| 中文关键词 同步短程硝化反硝化除磷 (SPNDPR) 碳氮比 聚磷菌 (PAOs) 反硝化聚糖菌 (DGAOs) |
| 英文关键词 simultaneous partial nitrification-endogenous denitrification phosphorus removal (SPNDPR) C/N ratio phosphorous accumulating organisms (PAOs) denitrification glycogen accumulating organisms (DGAOs) |
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| 中文摘要 |
| 为了解同步短程硝化内源反硝化除磷（SPNDPR）系统的脱氮除磷特性，以低C/N城市污水为处理对象，采用延时厌氧（180 min）/好氧运行的SBR反应器，通过联合调控曝气量和好氧时间，考察了该系统启动与优化运行特性.结果表明，当系统好氧段曝气量为0.8L·min-1，好氧时间为150 min时，出水PO43--P浓度约为1.5mg·L-1左右，出水NH4+-N和NO3--N浓度由10.28 mg·L-1和8.14mg·L-1逐渐降低至0 mg·L-1和2.27mg·L-1，出水NO2--N浓度逐渐升高至1.81mg·L-1；当曝气量提高至1.0 L·min-1且好氧时间缩短至120min后，系统除磷、短程硝化性能逐渐增强，但总氮（TN）去除性能先降低后逐渐升高，最终出水PO43--P、NH4+-N分别稳定低于0.5 mg·L-1和1.0mg·L-1，好氧段亚硝积累率和SND率分别达98.65%和44.20%，TN去除率达79.78%.SPNDPR系统内好氧段好氧吸磷、反硝化除磷、短程硝化、内源反硝化同时进行保证了低C/N污水的同步脱氮除磷. |
| 英文摘要 |
| This study focused on the nitrogen (N) and phosphorus (P) removal performance optimization of simultaneous partial nitrification-endogenous denitrification and phosphorus removal (SPNDPR) systems. An anaerobic (180 min)/aerobic operated sequencing batch reactor (SBR) fed with domestic wastewater was used for investigating the startup and optimization of SPNDPR by regulating the aeration rate and aerobic duration time. The experimental results showed that at an aerobic aeration rate of 0.8 L·min-1 and aerobic duration time of 150 min, the effluent PO43--P concentration was about 1.5 mg·L-1, with the effluent NH4+-N and NO3--N concentrations gradually decreasing from 10.28 and 8.14 mg·L-1 to 0 and 2.27 mg·L-1, respectively, and effluent NO2--N concentration increasing to 1.81 mg·L-1. When the aeration rate was increased to 1.0 L·min-1 and the aerobic duration time was shortened to 120 min, the phosphorus removal and partial nitrification-endogenous performance of the system gradually increased, but the total nitrogen (TN) removal performance initially decreased and then gradually increased. The final effluent PO43--P and NH4+-N were stably below 0.5 and 1.0 mg·L-1, respectively, aerobic nitrite accumulation and simultaneous nitrification-endogenous denitrification (SND) efficiencies were 98.65 and 44.20%, respectively, and TN removal efficiency was 79.78%. The concurrence of aerobic phosphorus absorption, denitrifying phosphorus removal, partial nitrification, and nitrification-endogenous in the aerobic stage of the SPNDPR system ensured the simultaneous removal of N and P from low C/N wastewater. |
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