Evaluation of Wastewater from a Refinery Treatment Plant for Agricultural Use

 Abstract— Wastewater use for agriculture is on the increase due to the growing world population and the increasing scarcity of good quality water resources. The performance of wastewater from a refinery treatment plant regarding its use for agricultural purpose was evaluated. Samples of the wastewater were collected at points A, B, C and D at specified distances of 10 meters apart. Samples were analyzed for both physical and chemical parameters. The pH value of the results of samples at points A, B, C and D were 7.90, 10.38, 10.27 and 9.92 respectively which are outside the standard range with higher alkalinity. The dissolved oxygen ranges between 7.06 and 13.41 mg/L while the Chloride values ranged between 31.99 and 58.48 mg/L and that of Sodium ranges between 6.50 and 130 mg/L. Ammonia and Nitrate were observed to have a high conductivity in sample at point B. Thus the harmful effect on the environment could be corrected if the wastewater Plant operations supervision is intensified; capable hands (experts) are used coupled with periodic training of personnel.