Simulation of Cr-III dispersion in the High Bogotá River Basin using the WASP model

Abstract

The Bogotá River is the major river in Cundinamarca because it crosses the entire region from north to south. Industries from different economic activities have been established in the river, especially tanneries. Nevertheless, the current and traditional tanning process requires a large volume of water and generates tremendous environmental problems due to the chemical composition of dumpings that are discharged in the river. Chrome III (Cr III) is a persistent pollutant that represents a huge health public problematic because it can transform into Chrome VI, which is very harmful to the environment and people. Simulations carried out with this pollutant can help to establish a degree of pollution and monitoring and treatment spots in the river. For this reason, we aimed to simulate Cr III in a defined stretch of approximately 8 km along from Villapinzón. WASP model was chosen to simulate this pollutant with the study conditions, based on its software properties and similarities with previous studies. From our results, eight mixing zones were identified in the simulated stretch, which constitutes key points for water uptake for treatment and further applications. Dispersive coefficient, flow, and system geometry were identified as the main factors in the simulation. WASP efficiently simulated the system because observed and obtained data reached an index of agreement (IOA) of 0.975, which is higher than the criterium established for simulation. Experimental data can improve simulations to further understand the degree of pollution in the river.

Review of Mathematical Surface Water’s Hydrodynamic/Water Quality Models with Their Application on the Shatt Al Arab River Southern Iraq

“…Higher roughness values led to a greater WSEL and inundation area, (Alzahrani, 2017). Ramos et al (2020) performed in his study a simulations for the dispersion of Chrome III (Cr III) pollutant, non-biodegradable mineral, it can convert into (Cr VI), which is very dangerous to the environment and people, in the Bogotá River, Cundinamarca, Colombia. WASP model was simulated Cr III dispersion at the study conditions.…”

Water Environmental Capacity Calculation Based on Control of Contamination Zone for Water Environment Functional Zones in Jiangsu Section of Yangtze River, China

“…In order to further protect the water ecological environment, it is necessary to study the water environmental capacity (WEC), which refers to the maximum amount of pollutants that can be contained in a water body while maintaining normal function [6,7], based on hydraulic modeling that can calculate the flow direction, flow volume, and water quality transport [8]. Widely used models include the Streeter-Phelos (S-P) model [9][10][11][12], the MIKE model [13], the Environmental Fluid Dynamics Code (EFDC) model [14], the Water Quality Analysis Simulation Program (WASP) model [15][16][17], the Quality Simulation Along River Systems (QUASAR) model [18], the Soil and Water Assessment Tool (SWAT) model, the Modular Three-dimensional Finite-difference Ground-water Flow Model (MOD-FLOW) [19], and the Stream Water Quality Model (QUAL2K) [20,21]. Some scholars have established mathematical models to calculate the WEC of the study areas.…”