Evaluation of pollutants removal efficiency to achieve successful urban river restoration
Evaluation of pollutants removal efficiency to achieve successful urban river restoration
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DOI：
10.2166/wst.2009.241
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发表时间：
2009-01-01
影响因子：
2.7
通讯作者：
Kim, Joon Ha
中科院分区：
文献类型：
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作者：
Cha, Sung Min;Ham, Young Sik;Kim, Joon Ha
更大的努力，提供替代方案是成功的城市河流恢复规划的关键。在这项研究中，我们讨论了两个不同的方面的水质管理计划，生物降解和人类健康，这是在光州（GJ）流，韩国的城市流的原始，原始状态的恢复项目。在这项研究中，每月监测生化需氧量（BOD5）和粪便指示细菌（FIB）的数据，分别从2003年至2008年和2008年，这些进行了评估，以探索污染物的规模和变化的空间和时间窗口。根据目标污染物的季节性特征以及取水口和排污口浓度之间的相关性，确定了削减目标污染物的理想情景，并分别建议增加环境流量和湿地作为BOD5和FIB的污染物削减图。分别采用Qual2E模型和假设（但计划）的人工湿地分别对这些情景进行了研究。结果表明，虽然控制在进口点的水质保证了较低的污染水平的BOD 5在GJ流，在排放点人工湿地可能是一个很有前途的战略，以减轻质量负荷的FIB。总体而言，这项研究表明，两者的结合可能是合理的方案，不仅支持可持续的城市水资源管理，但以提高城市河流恢复分配的质量。
Greater efforts to provide alternative scenarios are key to successful urban stream restoration planning. In this study, we discuss two different aspects of water quality management schemes, biodegradation and human health, which are incorporated in the restoration project of original, pristine condition of urban stream at the Gwangju (GJ) Stream, Korea. For this study, monthly monitoring of biochemical oxygen demand (BOD5) and fecal indicator bacteria (FIB) data were obtained from 2003 to 2008 and for 2008, respectively, and these were evaluated to explore pollutant magnitude and variation with respect to space and time window. Ideal scenarios to reduce target pollutants were determined based on their seasonal characteristics and correlations between the concentrations at a water intake and discharge point, where we suggested an increase of environmental flow and wetland as pollutants reduction drawing for BOD5 and FIB, respectively. The scenarios were separately examined by the Qual2E model and hypothetically (but planned) constructed wetland, respectively. The results revealed that while controlling of the water quality at the intake point guaranteed the lower pollution level of BOD5 in the GJ Stream, a wetland constructed at the discharge point may be a promising strategy to mitigate mass loads of FIB. Overall, this study suggests that a combination of the two can be plausible scenarios not only to support sustainable urban water resources management, but to enhance a quality of urban stream restoration assignment.