Water pollution modelling in Tha Chin River with Lattice Boltzmann method

The Tha Chin River is one of the major rivers in Thailand. It passes through agricultural land, industrial areas, farms, village and cites. It has become one of the most polluted rivers in country. The factors causing the degradation of the quality Tha Chin River's water at different locations depend on the use of the land that borders on the river banks. The Upper Tha Chin River basin runs through agricultural land where germinating seedlings are cultivated. This requires the use of fertilizer and insecticide at a high level. At the same time, the Lower Tha Chin basin experiences runoff from urban and industrial areas as it descends to the sea. It thus becomes polluted further by the combined discharges of industrial, domestic and rural inflows. In addition, there is an inflow of salty water from the sea. In monitoring the quality of the water in this river, one must measure all the sources of the pollution feeding into the river. Clearly factors such as precipitation, water flow rates, inundated seawater, chemical used in agricultural and industry and land use information must be included in any model used to understand and control the pollution in the Tha Chin river. Since the Tha Chin ecosystems is a dynamic one, we will create a model based on the Lattice Boltzmann methodology to analyze the interacting factors impacting the pollution of this river.