June 7, 2009

Karnafully River Water of Bangladesh is under pollution

The Karnafully is one of the most important River of Bangladesh. It is called the mother of Chittagong city because it feeding the city in many ways and also contents the all kinds of garbage of that city and it play an important role in the communication system of the whole region. From the beginning the importance of the river was very much and increasing day by day. But at present that river is under pollution.
In a recent study show that due to industrial wastes, municipality sewage and agricultural runoff on the river water she is nearly facing Biological death. Standard temperature for sustaining aquatic life is 20-30 (0C) where as current temperature is 230C.

The study was conducted between the Kaloorghat Bridge and Potenga estuary including Chittagong port. This area is most polluted due to the presence of many chemical fertilizers, iron, leather and pharmaceutical industries. All these industries discharge their untreated toxic waste water directly into the river Karnafully. The study involved determination of physical and chemical parameters of surface water at different points. The mean values of Water Temperature, Total Suspended Solids (TSS), Total Dissolved Solids (TDS), Total Solids (TS), Turbidity, Dissolved Oxygen (DO), Bio-chemical Oxygen Demand (BOD), Chemical Oxygen Demand (COD), pH, Electric Conductivity and Total Alkalinity were 230C, 365.87 mg/L, 8018.8, 8518.33 mg/L, 31.54 FTU, 1.55 mg/L, 6.65 mg/L, 13961 ┬Ás/cm, 247.47 mg/L, 560.27 mg/L and 4.8 mg/L respectively.
Reference:Thefreelibrary

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