Seasonal Variation of Water Quality Constituents in the Turag River

International Journal of Research and Innovation in Applied Science (IJRIAS) | Volume VI, Issue IX, September 2021|ISSN 2454-6194

Seasonal Variation of Water Quality Constituents in the Turag River

Mir Obaidur Rahman*, Mohammad Zahangeer Alam
Department of Environmental Science, Bangabandhu Sheikh Mujibur Rahman Agricultural University, Gazipur, Bangladesh
*Corresponding author

Abstract: Unplanned urbanization enhances environmental threats. Environmental threats increases water pollution that creates harmful impacts on the distribution of aquatic species. The present study is focused to evaluate the seasonal variation of water quality parameters in the Turagriver. Water samples were collected from 5 locations in north and south sides of the Turagriver during summer and winter seasons. The quality of water was found jeopardy. Dissolved oxygen (DO) of water samples were detected 4.9 to 5.7 mgL-1 during summer season. In winter, DO was found 0.78 to 0.95 mgL-1. The chemical oxygen demand (COD) was found higher in winter as compared to summer season. Heavy metals (Cr, Ni and Mn) in water samples were found higher than that of standard limit in both the seasons. Disposal of industrial wastewater was found to be the main causes for the pollution of water. It is suggested that disposal of wastewater should be treated properly before discharge into water bodies. Consequently, water will be contaminants free for community people and aquatic species that will help to protect of sustainable livelihood.

Keywords: Pollutions, industrial effluents, aquatic organisms, Heavy metals.

I. INTRODUCTION

Water quality issues are one of the key problems throughout the world in the twenty-first century [1]. Due to climate change these problems are going to be more aggravated in the future, resulting in higher water temperatures, melting of glaciers, and an intensification of the water cycle [2], with potentially more floods and droughts on earth [3]. The most severe impact of water pollution is the lack of sanitation and safe drinking water which affects more than a third of the people in the world [4]. In addition, exposure to pathogens or to chemical toxicants via food chain is increasing because of irrigating plants with contaminated water and bioaccumulation of toxic chemicals by aquatic organisms, including seafood and fish or direct contact with polluted water during recreation. Surface water pollution has been drawing more attention for many decades [4].

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