| 复合介质人工浮岛对缓流水体N、P修复研究 |
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| 引用本文： | 白少元,王明玉.复合介质人工浮岛对缓流水体N、P修复研究[J].环境科学与技术,2010,33(7). |
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| 作者姓名： | 白少元 王明玉 |
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| 作者单位： | 中国科学院研究生院水系统安全研究中心与资源与环境学院;桂林理工大学环境科学与工程学院; |
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| 基金项目： | 中国科学院"百人计划"择优支持项目 |
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| 摘 要： | 针对目前人工浮岛技术对氮磷去除效率低的现状,提出了一种层状复合介质人工浮岛原位水体净化技术,通过试验对其受水力停留时间、气水比及温度的影响进行了研究。试验结果表明,该人工浮岛技术对于缓流地表水体N、P去除效果较好,且优于传统人工浮岛装置。随着水力停留时间的增加,其去除率增大,通过试验进一步确定其适宜气水比为10:1,此时系统对氮磷的去除率比未曝气时增加1倍。在此运行条件下,水温高于13℃及水力停留时间为2.5d时,人工浮岛系统对水体中氨氮、硝酸盐氮、总氮和总磷的平均去除率分别为87.6%、63.8%、82%和83.5%;当水温低于13℃时去除率显著降低,此时延长HRT至7d时,系统对总氮和总磷仍有较高的净化效果,去除率分别为70.1%和69.2%。
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| 关 键 词： | 人工浮岛 野外试验 富营养化 缓流地表水体 脱氮除磷 水力停留时间 曝气 温度 |
Removing Nitrogen and Phosphorus from Slow Moving Surface Water by Layered Multi-media Constructed Floating Islands |
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| BAI Shao-yuan,WANG Ming-yu.Removing Nitrogen and Phosphorus from Slow Moving Surface Water by Layered Multi-media Constructed Floating Islands[J].Environmental Science and Technology,2010,33(7). |
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| Authors: | BAI Shao-yuan WANG Ming-yu |
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| Affiliation: | BAI Shao-yuan1,2,WANG Ming-yu1(1.Centre for Water System Safety and School of Resource and Environment,Graduate University,Chinese Academy of Sciences,Beijing 100049,China,2.School of Environmental Science and Engineering,Guilin University of Technology,Guilin 541004,China) |
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| Abstract: | In order to increase removal efficiencies of nitrogen and phosphorus from contaminated slow moving surface water,a new type of constructed floating islands with layered multi-media of substrates called the layered multi-media constructed floating island(LMCFI)was proposed.Pilot-scale LMCFI experiment settings were constructed and operated with different conditions,including various hydraulic residence times(HRT),gas water ratios and temperatures.It was observed that the factors such as HRTs,gas water ratios... |
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| Keywords: | constructed floating islands field test eutrophication slow moving surface water nitrogen and phosphorus removal hydraulic residence time(HRT) aeration temperature |
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