Abstract

• In this research work, three water samples from Mone Chaung stream were collected to assess the water quality in January, 2018. Three sampling sites, Site-1 (Le Pyin Su), Site-2 (Nyaung Aing) and Site-3 (Auk Pon) were selected in Mone Chaung stream, Sidoktaya Township. The physicochemical properties of all water samples such as turbidity, pH, total dissolved solids, total hardness, total alkalinity, sulphate and chloride were determined. Turbidity values (6.15 - 6.38 NTU) and total hardness (105 - 130 mg/L) were higher than the highest desirable level of the WHO standard. Moreover, the dissolved oxygen (DO), biochemical oxygen demand (BOD) and chemical oxygen demand (COD) of all three water samples were also analyzed and BOD (92-115 mg/L) and COD (210-248 mg/L) were found to be higher than the CPCB standard. For the treatment of water samples, activated rice husk charcoal was used. After treatment, physicochemical properties of the water samples were found to decrease. Before and after treatment, the heavy toxic metal, lead was also determined by using complexometric titration. More than 82 % of lead was removed after treatment with activated rice husk charcoal for 3 weeks.