| 生活污水与人工配水对好氧颗粒污泥系统的影响 |
| 摘要点击 3118 全文点击 1153 投稿时间：2018-08-13 修订日期：2018-11-05 |
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| 中文关键词 生活污水 人工配水 好氧颗粒污泥 序批式活性污泥反应器(SBR) 脱氮除磷 |
| 英文关键词 actual domestic sewage simulated wastewater aerobic granular sludge sequencing batch reactor (SBR) nitrogen and phosphorus removal |
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| 中文摘要 |
| 在R1、R2两组序批式活性污泥反应器（SBR）中接种污水处理厂回流污泥，分别以人工配水和实际生活污水为进水，研究常温下（20~30℃）进水水质对好氧颗粒污泥工艺的启动以及温度变化对系统稳定运行的影响.结果表明，R1、R2分别历时25 d、42 d启动成功，颗粒污泥稳定后，其平均粒径分别达到1200 μm、750 μm，R1、R2内出水COD、TP、TN的平均浓度分别为22.53、0.48、7.70 mg·L-1和49.73、0.49、14.55 mg·L-1，去除率分别为90.60%、90.34%、87.85%和79.74%、88.59%、79.25%.当温度降低至5~16℃时，R1内颗粒污泥出现解体现象，COD及TP去除能力基本不变，出水TN平均浓度升高为29.03 mg·L-1，平均去除率降低至48.81%，脱氮性能受到抑制；R2内颗粒污泥运行稳定，出水COD、TP和TN平均浓度分别为14.31、0.50和12.24 mg·L-1，平均去除率分别为92.42%、93.37%、86.28%，出水满足《城镇污水处理厂污染物排放标准》一级A标准.采用人工配水和生活污水均能成功培养出好氧颗粒污泥，生活污水培养成熟的好氧颗粒污泥结构更密实，当温度降低至5~16℃时，能够有效抑制丝状菌的膨胀，抗冲击负荷能力强. |
| 英文摘要 |
| Sludge returned from the secondary sedimentation tank of a sewage treatment plant is inoculated into two sequencing batch reactors (SBR):R1 and R2. Simulated wastewater and actual domestic sewage are used as the influents of R1 and R2, respectively, in order to study the impact of the influent water quality on the formation at normal temperature (20-30℃) and the stable operation of the system when the temperature changes. The results show that both R1 and R2 start successfully with 25 d and 42 d, respectively. The average size of the aerobic granular sludge in R1 and R2 is 1200 μm and 750 μm when the sludge granules stabilize. The average concentrations of COD, TP, and TN in the R1 and R2 effluent are 22.53, 0.48, and 7.70 mg·L-1 and 49.73, 0.49, and 14.55 mg·L-1, respectively, with average removal rates of 90.60%, 90.34%, and 87.85% and 79.74%, 88.59%, and 79.25%. When the temperature drops to 5-16℃, the granular sludge in R1 disintegrates, the removal rates of COD and TP are basically unchanged, the average concentration of TN in the effluent increases to 29.03 mg·L-1, the average removal rate decreases to 48.81%, and the denitrification performance is suppressed. The granular sludge in R2 remains stable; the average concentrations of COD, TP, and TN in the effluent are 14.31, 0.50, and 12.24 mg·L-1, and the average removal rates are 92.42%, 93.37%, and 86.28% respectively. The effluent reaches the IA standard of the "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plant". Both the simulated wastewater and actual domestic sewage can cultivate aerobic granular sludge successfully, but the aerobic granular sludge in the domestic sewage is more compact in structure, effectively suppresses the expansion of filamentous bacteria when the temperature drops to 5-16℃, and is more resistant to changes. |
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