ENVIRONMENTAL CHARACTERIZATION AND POSSIBLE POLLUTION EFFECT OF TEXTILE EFFLUENTS IN IKORODU, LAGOS STATE

Abstract

The present study was conducted to determine the degree of pollution of textile effluent generated from textile production and its effects on Ikorodu populace in Lagos State. Samples (waste water, potable water and soil) were collected from two different textile mills in Ikorodu which is the major production area of textile in Lagos state and they were analyzed for various physicochemical parameters and metal ions concentration. For the first textile mill located at Odogunyan, analysis of the textile effluents shows that the TDS (8486 - 10,474 mg/l), TS (8638 - 10,486 mg/l) and D.O (1.011 – 5.130 mg/l), the potable water shows appearances (cloudy), Turbidity (2.66 - 11.6 mg/l) while the soil analysis show a high value in the zinc and iron concentration (2.4774 – 2.8241 mg/kg) and (505.3872 – 515.275mg/kg) respectively. The waste water for the second textile mill show a result of colour (904 – 1288); Appearance (Greenish with particles – Blackish with particles); pH (9.06 – 11.66); Turbidity (3.27 – 8.62); D.O (0.06 – 0.5 mg/l), COD (79 – 328 mg/l) and BOD (19.75 – 82 mg/l), the potable water shows Appearance (cloudy), pH (6.4 – 6.8) while the soil analysis are pH (4.93 – 5.60) Odour (Chocking smell), % moisture content (50.23 – 63.12) and iron content (380.7282 – 388.3751 mg/kg). The study revealed that the textile wastewaters were untreated and contained high amounts of pollutants which have affected the quality of their potable water and the soil nutrient. The results of the effluent and soil analyzed were compared with the Lagos State Environmental Protection Agency (LASEPA) standards, it was observed that parameters analyzed are beyond the LASEPA standard, the limits for effluents are as follows; Colour (250 Pt.Co.APHA), pH (5.5 – 9.0), TDS (2100 mg/l), TS (2200 mg/l), D. O (<2 mg/l), COD (80 mg/l) and BOD (20 mg/l) while the soil limits are; pH (6 – 9), odour (odourless), % moisture content (25 %), Zn (<1 mg/l) and Fe (5.0 mg/l). This can be attributed to the ineffective effluent treatment plant of the textile mills The results for the portable water were compared with the World health Organization (WHO) standard for drinking water, 2006. It was also noted that some of the parameter such as appearance (Colorless), Turbidity (5 NTU) and pH (6.5 – 8.5) are not in accordance with the laid down standards, this is as a results of the effect of untreated effluents discharge into the environment.