中文关键词同步短程硝化反硝化(SPND)内源短程反硝化强化生物除磷(EBPR)聚磷菌(PAOs)城市污水 英文关键词simultaneous partial nitrification-endogenous denitrification (SPND)endogenous partial denitrificationenhanced biological phosphorus removal (EBPR)phosphorous accumulating organisms (PAOs)urban sewage

作者	单位	E-mail
巩秀珍	青岛大学环境科学与工程学院, 青岛 266071	G_gongxiuzhen@163.com
于德爽	青岛大学环境科学与工程学院, 青岛 266071
袁梦飞	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
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
都叶奇	青岛大学环境科学与工程学院, 青岛 266071

中文摘要 为了解厌氧/好氧/缺氧（A/O/A）运行的序批式反应器（SBR）中，强化生物除磷（EBPR）与同步短程硝化反硝化（SPND）耦合，并后置短程反硝化的脱氮除磷特性，以低C/N（≤ 4）城市污水为处理对象，通过优化曝气量和缺氧时间，实现了低C/N城市污水的深度脱氮除磷.结果表明，当好氧段曝气量由1.0 L·min^-1降至0.6 L·min^-1，缺氧时间为180 min时，出水PO₄^3--P浓度由0.06 mg·L^-1降至0，出水NH₄⁺-N、NO₂^--N和NO₃^--N浓度分别由0.18、18.79和0.08 mg·L^-1逐渐降低至0、16.46和0.05 mg·L^-1，TN去除率由72.69%提高至77.97%；随着曝气量的降低，SPND现象愈加明显，SND率由19.18%提高至31.20%；此后，当缺氧段时间由180 min逐渐延长至420 min，出水PO₄^3--P、NH₄⁺-N和NO₃^--N浓度分别维持在0、0和0.03 mg·L^-1左右，出水NO₂^--N低至3.06 mg·L^-1，SND率达32.21%，TN去除性能逐渐提高，TN去除率高达99.42%，实现了系统的深度脱氮除磷. 英文摘要 This study focuses on the investigation of the nitrogen (N) and phosphorus (P) removal characteristics of a combination of enhanced phosphorus removal (EBPR) with simultaneous partial nitrification endogenous denitrification (SPND) and post-partial denitrification process. An anaerobic/aerobic/anoxic (A/O/A) operated sequencing batch reactor (SBR) fed with urban sewage was optimized by regulating the aeration rate and anoxic time. Based on this optimization, deep-level nitrogen and phosphorus removals from low C/N urban sewage could be realized. The experimental results show that the effluent PO₄^3--P concentration decreased from 0.06 mg·L^-1 to 0 mg·L^-1, the effluent NH₄⁺-N, NO₂^--N, and NO₃^--N concentrations gradually decreased from 0.18, 18.79, and 0.08 mg·L^-1 to 0, 16.46, and 0.05 mg·L^-1, respectively, and the TN removal efficiency increased from 72.69% to 77.97% when the aeration rate decreased from 1.0 L·min^-1 to 0.6 L·min^-1 and the anoxic duration was 180 min. With the reduction of the aeration rate, the SPND phenomenon became notable and the SND rate increased from 19.18% to 31.20%. When the anoxic duration was extended from 180 min to 420 min, the effluent PO₄^3--P, NH₄⁺-N, and NO₃^--N concentrations stabilized at~0, 0, and 0.03 mg·L^-1, respectively. The effluent NO₂^--N concentration was as low as 3.06 mg·L^-1, the SND rate was~32.21%, the TN removal performance gradually improved, and the TN removal efficiency was as high as 99.42%. Thus, deep-level nitrogen and phosphorus removals could be realized with the SPNDPR-PD system.

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