| 碳源补充方式对潮汐流人工湿地生物蓄磷/磷移除的影响 |
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| 引用本文： | 乔子涵,齐冉,王振,丁亚男,姚杰,张云. 碳源补充方式对潮汐流人工湿地生物蓄磷/磷移除的影响[J]. 应用生态学报, 2018, 29(8): 2753-2762. DOI: 10.13287/j.1001-9332.201808.032 |
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| 作者姓名： | 乔子涵 齐冉 王振 丁亚男 姚杰 张云 |
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| 作者单位： | 安徽农业大学资源与环境学院, 农田生态保育与污染防控安徽省重点实验室, 合肥 230036 |
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| 基金项目： | 本文由国家自然科学基金项目(51508002)、安徽省自然科学基金项目(1508085QE99)、安徽省高校优秀青年人才支持计划项目(gxyqZD2017016)和农田生态保育与污染防控安徽省重点实验室开放基金项目(FECPP201704)资助 |
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| 摘 要： | 采用生物蓄磷/磷移除型潮汐流人工湿地(TFCW)试验装置,探究了周期性磷移除操作过程中3种不同的有机碳源补充方式对系统运行性能的影响.结果表明: 碳源补充方式可显著影响TFCW的生物蓄磷/磷移除性能.碳源补充方式的优化有利于系统中聚磷菌群(PAOs)丰度及其活性的维持,可最大限度地提高PAOs在磷移除操作过程中的磷素释放量、胞内聚β-羟基丁酸(PHB)合成量及其对碳源的利用率,并可保障系统在生物蓄磷阶段高效且稳定的除磷效果.当生物蓄磷/磷移除(PB-PH)周期为30 d,且采用连续循环投加方式补充碳源时,TFCW在试验阶段的磷素截留量与磷素移除率分别为26994.88 mg和70.8%.典型PB-PH周期内系统在生物蓄磷过程中的磷素去除率为(91.4±2.1)%,系统中的PAOs在磷移除过程中的磷素释放量、胞内PHB合成量及其对碳源的利用率分别为(1563.72±127.84) mg、(4.52±0.39) mmol C·g-1 VSS和(97.3±1.6)%.
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| 收稿时间： | 2017-10-10 |
Effects of carbon supplementary modes on phosphorus bioaccumulation/phosphorus harvesting process in a tidal flow constructed wetland. |
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| QIAO Zi-han,QI Ran,WANG Zhen,DING Ya-nan,YAO Jie,ZHANG Yun. Effects of carbon supplementary modes on phosphorus bioaccumulation/phosphorus harvesting process in a tidal flow constructed wetland.[J]. The journal of applied ecology, 2018, 29(8): 2753-2762. DOI: 10.13287/j.1001-9332.201808.032 |
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| Authors: | QIAO Zi-han QI Ran WANG Zhen DING Ya-nan YAO Jie ZHANG Yun |
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| Affiliation: | Anhui Province Key Laboratory of Farmland Ecological Conservation and Pollution Prevention, School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China. |
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| Abstract: | We explored the effects of carbon supplementary modes on operational performance in a tidal flow constructed wetland (TFCW) utilizing phosphorus bioaccumulation/phosphorus harvesting (PB-PH) process. Three different carbon supplementary modes were adopted during the periodical phosphorus harvesting process. The results showed that the carbon supplementary mode significantly affected the performances of phosphorus bioaccumulation and phosphorus harvesting throughout the experiment. The optimization of carbon supplementary mode would facilitate the maintenance of abundance and activities of polyphosphate-accumulating organisms (PAOs). Subsequently, the amounts of phosphorus release and PHB synthesis in PAOs, as well as the utilization rate of supplementary carbon, could be effectively enhanced during the phosphorus harvesting process. The efficient and stable phosphorus removal effects of the TFCW could be ensured during the phosphorus bioaccumulation process. When the PB-PH cycle length was 30 d and using the continuous circulation carbon supplementary mode, the amount of phosphorus retained in the bed and the mean phosphorus harvesting efficiency of the TFCW were 26994.88 mg and 70.8%, respectively. Regarding a typical PB-PH cycle, the mean phosphorus removal efficiency of the TFCW could achieve (91.4±2.1)% during the phosphorus bioaccumulation process. The amounts of phosphorus release and PHB synthesis in PAOs, and the utilization rate of supplementary carbon in the system could reach up to (1563.72±127.84) mg, (4.52±0.39) mmol C·g-1 VSS, and (97.3±1.6)%, respectively. |
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