Modelling faecal bacteria pathways in receiving waters
Modelling faecal bacteria pathways in receiving waters
复制标题
模拟接收水中的粪便细菌途径
DOI：
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发表时间：
2007
期刊：
影响因子：
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通讯作者：
B. Lin
中科院分区：
文献类型：
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作者：
I. Schnauder;B. Bockelmann;B. Lin
对二维有限体积模型HEMAT进行了改进，以模拟河流和沿海流域综合水系中粪便指示生物的路径、命运和衰变因子。通过模拟来自河流源头的粪便指示生物输入，开发、校准和检验了该数值模型。提供了一套全面的实地数据集，包括在两周期间收集的密集近海调查数据；这些数据被用作验证水动力模型的时间序列。模型采用河流流量和水质资料作为边界条件和初始条件。通过模拟一系列14种情景，调查了替代土地使用管理战略对接收水的河口和沿海水域水质的影响。总体来说，模型结果表明，在干旱天气和基流条件下，来自污水排放点源的粪便指示生物输入占主导地位。另一方面，河流污染源(如弥漫性碳源)对环境的影响较大。
The two-dimensional finite-volume model ‘Hemat’ was refined to model the pathways, fate and decay factors of faecal indicator organisms for an integrated river and coastal basin water system. The numerical model was developed, calibrated and tested by modelling faecal indicator organism inputs from river sources. A comprehensive field data set was available including intensive offshore survey data collected during a two-week period; these were used as a time series for the verification of the hydrodynamic model. River discharges and water quality data were used as boundary and initial conditions for the model. The impact of alternative land-use management strategies on the water quality of the receiving estuarine and coastal waters was investigated by modelling a series of 14 scenarios. Generally, the model results show that the faecal indicator organism input from point sources of sewage effluent dominated during dry weather and base flow conditions. On the other hand, riverine sources (such as diffuse c...