Assessment of Physicochemical Parameters and Heavy Metals inGombe Abattoir Wastewater

摘要

The physical parameters pH and Temperature of Gombe abattoir wastewater sample of 6.5 and 27.6 o C respectively were within the WHO/USEPA discharge limits while turbidity, TSS, Conductivity and TDS with mean values of 1100NTU, 5600mg/L, 59mS/c and 38.5g/L respectively were also above the WHO/USEPA limits. For chemical parameters, concentration level of Nitrates (1034mg/L), Nitrogen (234mg/L), Ammonia (285mg/L), Ammonium (301mg/L), phosphate (163mg/L), phosphorus (53mg/L ), and phosphorus-pentoxide (122mg/L) in thewastewater sample were above WHO/USEPA limits, only sulfate (44mg/L) that is below the WHO/USEPA limit of 250mg/L. The COD and BOD 5 values of 3539mg/L and 635mg/L respectively were also above the WHO/USEPA limits, Dissolved oxygen (DO) mean values of 2.3mg/L was below requirement of WHO/USEPA limits for the discharged of wastewater into river. The concentration of heavy metals in Gombe Abattoir wastewater sample determines are Copper (0.01ppm), Manganese (0.30ppm), Magnesium (9.60ppm), iron (0.20ppm), Chromium (0.01ppm), Cadmium (0.00ppm), Nickel (0.06ppm), and Lead (0.01ppm) were within the WHO/USEPA recommended standard limits, except the concentration of Zinc (0.26ppm) that was above the WHO/USEPA recommended limits of 0.10ppm, abattoir wastewater requires pretreatment before discharging into environment and more research should be conducted to reduce the abattoir wastewater concentration and its effect on the immediate environment.