Oil wastewater coagulation with industrial waste iron coagulant

The study presents the results obtained during the coagulation of water with high content of oil compounds assessment as total petroleum hydrocarbon (TPH). Coagulation was carried out with a complex coagulation agent based on iron salts obtained from industrial waste. The control parameters of coagulation: turbidity, organic carbon (TOC), TPH, chemical oxygen demand (COD) in treated water samples with the optimal dose of coagulation agent based on iron salts obtained from industrial waste are similar to the residual values of the parameters determined in samples treated with the optimal dose of ferric chloride. The results obtained for the coagulation of oil wastewaters with optimal doses with different coagulation agents are supported also by the UV spectra. The advantage of the complex coagulation agent obtained from industrial waste was that it can be used for some wastewater in lower doses, by 25%, vs. ferric chloride