Water quality assessment using physiochemical parameters and heavy metal concentrations of circular rivers in and around Dhaka city, Bangladesh

Anik Mahmud, Albab Kazi, Masud Hussain, Rahman Hassan, S Jewel, Shamsad
2017 International Journal of Water Research   unpublished
Water quality of the rivers (Buriganga, Turag, Balu and Shitolokhya) in and around the Dhaka city was evaluated throughout from post monsoon (November 2015) to pre monsoon (May 2016). Circularly twelve critical areas around Dhaka city were selected. Important physicochemical parameters such as TSS, EC, TDS, DO, BOD, COD, pH, NH4, NO3, Cl, PO4, SO4, and K were determined. Potentially toxic heavy metals include Fe, Mn, Zn, Cu, Cr, Cd, Ni, and Pb were determined. The post-monsoon water conditions
more » ... f these circular rivers were better than pre-monsoon season. However, in both seasons these rivers were not suitable for aquaculture and domestic uses. In pre monsoon, these rivers were so acidic to be used as the irrigation source. The discharge of a huge quantity of the biodegradable and non-biodegradable pollutants from nearby industrial complexes combine with domestic and municipal waste dumping are the main reasons. Contaminated status of these encompassing rivers may jeopardize aquatic environment, pollute adjacent soil and groundwater. The incumbent authority should promulgate efficient and stringent guideline and regulation against indiscriminate and random disposal of the pollutants into these precious rivers.