TERI University, IHC Complex, Darbari Seth Block, New Delhi, 110003, India.
Environ Monit Assess. 2009 Dec;159(1-4):231-40. doi: 10.1007/s10661-008-0625-7. Epub 2008 Nov 20.
The study illustrates the utility of STREAM II as a modeling package to determine the pollution load due to organic matter in the River Yamuna during its course through the National Capital Territory that is Delhi, India. The study was done for a period from 1995-2005. Model simulates the dissolved oxygen and biochemical oxygen demand parameters in a two-dimensional fashion by performing the numerical solution to a set of differential equations representing aquatic life with the help of Crank-Nicholson finite difference method. The model was simulated and calibrated through the field water-quality primary data and the secondary data which were taken from Central Pollution Control Board. The main reasons for the high river pollution is increasing population of Delhi and other states, leading to generation of huge amounts of domestic sewage into the river Yamuna. The model gave a good agreement between calibrated and observed data, thus, actualizing the validity of the model. However, discrepancies noticed during model calibrations were attributed to the assumptions adopted in the model formulation and to lack of field data.
本研究展示了 STREAM II 作为一个建模工具的实用性，用于确定印度德里国家首都辖区（NCT）境内流经的亚穆纳河的有机物污染负荷。该研究的时间段为 1995 年至 2005 年。模型通过使用 Crank-Nicholson 有限差分法对一组代表水生生物的微分方程进行数值求解，以二维方式模拟溶解氧和生化需氧量参数。该模型通过野外水质原始数据和中央污染控制委员会提供的二级数据进行了模拟和校准。导致河流高度污染的主要原因是德里和其他邦人口的增长，导致大量生活污水排入亚穆纳河。模型的校准数据与观测数据之间具有良好的一致性，从而验证了模型的有效性。然而，在模型校准期间注意到的差异归因于模型公式中采用的假设以及缺乏现场数据。
