Predicting the Capacity of Receiving Wastewater of Thuong River in Vietnam and Propose Policies for Water Resources Protection

Abstract

Thuong river-a tributary of the Red River in Vietnam, is currently facing the degradation in both water quality and quantity. One of the major causes of water pollution is wastewater discharge into the river from industrial plants, agricultural and residential areas where wastewater is untreated or treated but does not meet the Vietnamese standards. This report presents the results of predicting the capacity of receiving wastewater of Thuong river from the Cau Son hydrological station to Pha Lai hydrological station in 2020 and 2030 with 3 scenarios: (i) The amount of waste water increases according to plan, but not treated, (ii) 30% waste water is treated, (iii) 70% waste water is treated. The method is the application of the MIKE 11 model combined with the waste load calculation formula. The results showed that, in many river stretches, especially the stretches run through Bac Giang city and industrial areas, the river pollution is increasingly serious, and has no signs of stop. Therefore, it is necessary to propose the water policies to control the wastewater discharge into the Thuong River in particular and the Red River system in general in order to protect water resource.