Molla Islam - Deterioration of water quality of Surma River.

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  Publication Details (including relevant citation   information): Alam, J. B., Hossain, A., Khan, S. K.,   Banik, B. K., Islam, Molla R., Muyen, Z., Rahman, M. Habibur.,   Environ. Monit. Assess., 2007,   134 (1-3), pp 233-242

  Abstract: Surma River is polluted day by day by   human activities, poor structured sewerage and drainage system,   discharging industrial and household wastes. The charas (natural   channels) are responsible for surface runoff conveyance from its   urban catchments to the receiving Surma River. Water samples have   been collected from a part of Surma River along different points   and analyzed for various water quality parameters during dry and   monsoon periods. Effects of industrial wastes, municipal sewage,   and agricultural runoff on river water quality were studied. The   study was conducted within the Chattak to Sunamganj portion of   Surma River, which is significant due to the presence of 2 major   industries, a paper mill and a cement factory. The other   significant feature is the conveyors that travel from India to   Chattak. The river was found to be highly turbid in the monsoon   season. But BOD and fecal coliform concn. was found higher in the   dry season. The water was found slightly acidic. The mean values   of parameters were: cond. 84-805 μs; DO 5.52 mg/L (dry season),   5.72 mg/L (monsoon); BOD: 1 mg/L (dry season), 0.878 mg/L   (monsoon); total solids 149.4 mg/L (dry season), 145.7 mg/L   (monsoon). An effort was made to study the status of concn. of   PO43- and NH4+-N at 4 entrance points of Malnichara to the city,   Guali chara, Gaviar khal and Bolramer khal. Data were collected   from March-Apr. and Sept.-Oct. of 2004. Concns. were measured   using UV spectrophotometers. Although the phosphate concn. was   within the limit set by DOE for fishing, irrigation and   recreational purposes, however, NH4+-N exceeded the limit. [on   SciFinder(R)]

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