Assessing the wastewater generation in the south of Binh Duong province

Abstract

This study aimed to evaluate the wastewater generation in the south of Binh Duong province (including Di An, Thuan An, Tan Uyen, Ben Cat districts and Thu Dau Mot city) where is many development activities were undertaken as well as the risk of water pollution. By survey, data collection, and GIS, main pollutant loads (BOD, COD, SS, total N and total P) generated from main waste sources (domestic, industry, and livestock) were estimated and forecasted until 2030. The results showed that the amount of pollutant load in 2016 was about 105,273.6 ton/year, most of which came from domestic wastewater (about 60%). Di An and Thuan An districts generated the highest pollutant load in the study area, corresponding to 5.4 ton/ha.year and 2.8 ton/ ha.year. COD and BOD occupied a high proportion of pollutant parameters, which were 0.5 ton/ha.year and 0.26 ton/ha.year, respectively. To estimate the pollutant load in the future, two wastewater treatment scenarios were taken into the consideration: as similar as the current status (KB H) and according to A standard (KB A). By 2025, the total pollutant load would increase 2.1 times for KB H and 1.2 times for KB A. The corresponding figures for 2030 would be 3.1 and 2.0 times, respectively, indicating many pressures on the water quality. Accordingly, it is necessary to continue studying and evaluating the capacity of water sources for receiving wastewater, to the create basis for water quality management in particular and environmental management in general.