Abstract:


The negative impact of industrial wastewaters on waterbodies cannot be over emphasised in the environment. The only way out of thesenegative impacts is proper protection of the environment through environmentalpollution control measures. This paper provides an outline result ofcharacterisation of textile wastewaters. Wastewater samples were collected fromsix textile mills in the northern part of Nigeria. The samples were subjectedto laboratory tests (determination of BOD, COD, pH, chloride, sulphate, TKN,some heavy metals and TP concentrations). The study revealed that textile wastewatersis nutrient deficient, contain chloride, some heavy metal, high COD, BOD , veryhigh colour, COD: TKN and COD : TP ratio. The results show that textile wastewaterhas 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 studyrevealed that 60.9 to 79.0 % of the COD concentration would be degradedbiologically and average flow rate was found to be 352.8 m3/d. TKN: COD ratiorevealed that textile wastewater requires no carbon source and TP: COD ratioindicates that pre chemical treatment before biological treatment of thewastewater would not required to reduce some of the pollutants.


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About the Authors:


I.A. Oke is associated with Department of CivilEngineering, Obafemi Awolowo University, Ile-Ife, Nigeria.

C.A. Okuofu is associated with Department of CivilEngineering, Obafemi Awolowo University, Ile-Ife, Nigeria and Department ofWater Resources and Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria.

J.A. Otun is associated with Department of Water Resourcesand Environmental Engineering, Ahmadu Bello University, Zaria, Nigeria.




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