A statistical classification of textile wastewaters in northern Nigeria
Abstract:
The negative impact of industrial wastewaters on water bodies cannot be over emphasised in the environment. The only way out of these negative impacts is proper protection of the environment through environmental pollution control measures. This paper provides an outline result of characterisation of textile wastewaters. Wastewater samples were collected from six textile mills in the northern part of Nigeria. The samples were subjected to laboratory tests (determination of BOD, COD, pH, chloride, sulphate, TKN, some heavy metals and TP concentrations). The study revealed that textile wastewaters is nutrient deficient, contain chloride, some heavy metal, high COD, BOD , very high colour, COD: TKN and COD : TP ratio. The results show that textile wastewater has mean concentration for BOD, COD, pH, colour, TKN, TP, chloride, sulphate, cadmium, chromium and zinc to be 1593.42 mg/l, 6477.57 mg/l, 9.79,230, 13.87mg/l, 7.79mg/l, 312.35 mg/l, 8.56 mg/l, 0.06mg/l, 0.01 mg/l and 1.25 mg/l. The study revealed that 60.9 to 79.0 % of the COD concentration would be degraded biologically and average flow rate was found to be 352.8 m3/d. TKN: COD ratio revealed that textile wastewater requires no carbon source and TP: COD ratio indicates that pre chemical treatment before biological treatment of the wastewater would not required to reduce some of the pollutants.
About the Authors:
I.A. Oke is associated with Department of Civil Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria.
C.A. Okuofu is associated with Department of Civil Engineering, Obafemi Awolowo University, Ile-Ife, Nigeria and Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria.
J.A. Otun is associated with Department of Water Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria.
