Observation of Water Quality of Balu River

Abstract

The Balu River is a notoriously contaminated location where unreliable chemical interactions between harmful compounds and water quality occur. As a result, ongoing monitoring of this area is essential for implementing the necessary environmental system of management. The study was carried out at the Balu River in Dhaka.area close to the Demra. Analysis of water quality plays a big role in environmental engineering. Aquatic life and the surrounding ecology are also impacted. It is occasionally necessary to take qualitative measurements in order to continuously assess the water quality coming from the various supply sources. Physical, chemical, or biological variables can affect the quality of water. Thermodynamic characteristics of water quality include turbidity and temperature. This study was about to measuring water quality in Balu river. We were selected three different stations these are Meradia bazar, poschimgaon and Demra. We also selected eight water quality parameters to measuring water quality these are pH, DO, BOD, EC, COD, Turbidity, Temperature and Iron. We have collected water samples and tested in a lab. This study shows the variation of water quality parameters at three different locations. These are- Meradia bazar, Poschimgaon and Demra. From the observed physicochemical parameters. The mean values of these parameters are, pH 6.77, DO 4.27 mg/l, BOD 9.3 mg/l, COD 40 mg/l, EC 197 μS/cm, Turbidity 72 NTU, Temperature 33 °C and Iron 1 mg/l. On the basis of this study, The acceptable ranges of all parameters for aquatic life- pH (6.5-6.8), DO 5 mg/l, BOD 6 mg/l, EC (200-1000) μS/cm, Turbidity 10 NTU, Temperature (26-32) °C and Iron 1 mg/l. The majority of the parameters are not within permissible range. Keywords Balu river, samples locations, water quality parameters and aquatic