Evaluation of Hydro-Chemistry and Its Suitability inAquaculture Development

Résumé

The  development of Aquaculture depends totally on  the water   quality  parameters.    Water   samples  collected  from  nearby water  resources was assessed for its suitability for the survival of the fish population in the downstream resources.  To ascertain the health status and  integrity of these resources, water samples were collected in the  past days.   The  results of the  physico-chemical parameters indicate the  station water  samples with the  following characteristics: Conductivity  (121.63±6.03  to  206.4±6.21  µS/cm),   pH  (5.2±0.2   to 6.60±0.2),  TDS   (59.3±4.2    to   158±2.6mg/L),  TSS   (42.95±5.3  to 59.3±4.2   mg/L),  Color (265.66±36.5 to  302.6±32.3 TCU),  Turbidity (36.2±4.3  to79.7±6.9 NTU), Temperature (15  to 300C),  Bicarbonate (120.63±14.16     to   146.24±12.2  mg/L),   Chloride   (52.39±6.03  to 84.4±6.1  mg/L), DO (7.02±0.6  to 7.8±0.3   mg/L), BOD (3.88±0.40 to 7.20±0.30   mg/L),   COD   (4.07±0.82   to   6.1±0.5    mg/L),   Nitrate (2.38±1.01  to   3.01±1.02  mg/L),   Sulphate  (5.58±1.35  to   8.4±1.2 mg/L), Ammonia  (0.20  to  0.32  mg/L) and  Phosphate  (0.46±0.11 to 1.25±0.1    mg/L).   The  mean values were  generally within the  WHO and    the   other    Standard   for   Drinking   Water    Quality   accepted maximum  limit except for colour  and  turbidity.  The  result of ANOVA for all  the  parameters was significant  during  the  seasons (P˂0.05), except  for  TDS,  TSS   and   temperature  (P˃0.05). However   at  the station  temperature, bicarbonate,  nitrate,  sulphate,  phosphate and copper were  not significant (ANOVA, P˃0.05). No special recommendation  will  be   required  and   if   possible  controlling  the effluent discharge into the downstream of river will be enforced.