OPTIMUM DOSAGE DETERMINATION IN THE TREATMENT OF ABATTOIR WASTEWATER USING IRON(III)CHLORIDE.

ABSTRACT

This research was carried out to precisely ascertain the optimum coagulant dosage that will effectively treat abattoir wastewater using iron(III)chloride as coagulant Samples of abattoir wastewater were collected from Ikpoba Okha Local Government Area Abattoir Unit, Benin City, Edo State. This study revealed that an optimum dose of 3.0g iron(III)chloride coagulant in 250ml of abattoir wastewater was effective in the treatment of abattoir wastewater. The study shows that there is an increase in electrical conductivity by 88.543%, Total Dissolved Solid(TDS) by 83.43%, there is a positive increase in Dissolved oxygen from 0 to 8.35mg/L, a decrease in Biological Oxygen Demand(BOD) from 5mg/L to 1.28mg/L, the chemical Oxygen Demand removal was 70.06%, Turbidity removal was 54.88%, Alkalinity removal was 82.89%, the Total kjeldahl Nitrogen(TKN) removal was 4.1%, Total Phosphorus removal and Hardness removal are 71.84% and 46.39% respectively. Thus iron(III)chloride will treat abattoir wastewater with high efficiency.