Investigation of the Movement of Biodegradable and Non-Biodegradable Pollutants in Sediments Adjacent to the Jajroud River by Practical Experiment
In this study, by conducting experiments in the alluvium adjacent to the river, the effect of various biodegradable and non-biodegradable pollutants was investigated on soil pollution around the river and also river water pollution under its influence. A part of Jajroud River, between Latian and Mamlu Dam reservoirs, was selected as the research site and the wells were drilled at distances of 200, 100, and 50 m and adjacent to the river. Rhodanine tracer was used as a non-degradable pollutant and powdered milk was used as a degradable pollutant to increase the organic charge parameter (COD parameter). Uranine test was performed by measuring curve using spectrofluorescence device and COD was measured by DR6000 device according to ISO 15705 standard. The CTRAN module was also compared to evaluate the accuracy of the results from the numerical model based on the finite difference method and the commercial software GeoStudio 2007. The results showed that the travel time from the first well to the fourth well was about 14 days for both types of pollutants and the ratio of pollution concentrations in the first moment to the last moment was about 0.4 for non-degradable pollutants and about 0.55 for degradable pollutants.
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