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Homogeneous solar Fenton and alternative processes in a pilot-scale rotatable reactor for the treatment of petroleum refinery wastewater
Process Safety and Environmental Protection ( IF 4.384 ) Pub Date : 2020-01-11 , DOI: 10.1016/j.psep.2020.01.006
Omid Pourehie; Javad Saien

Applicability of the solar Fenton process for the treatment of a real refinery wastewater was investigated. A novel solar-reactor was used with the capability of automatic rotating against the sun, enabling maximum utilization of direct and single reflective sunlight beams. The COD and TOC criteria were measured to follow the pollutants removal. Results revealed optimal operating conditions of 694.7 mg/L hydrogen peroxide, 67.3 mg/L ferrous salt and solution pH of 3.2. Under these conditions, COD and TOC were, respectively, decreased to 79.6 and 73.2% after 180 min sunlight envision. For comparison, alternative H2O2 / Fe2+, S2O82- / Fe2+, NaOCl / Fe2+, NaOCl, S2O82- and H2O2 processes, all activated with sunlight, were performed. The present pollutants were identified by means of the GC/MS headspace technique, showing significant removal of the majority of petroleum aliphatic and aromatic hydrocarbons and that biodegradability was feasible since BOD5/COD reached from 0.36 to 0.62. The process performance was compared with the previously reported similar processes for treating specified pollutants and wastewaters. High preference of the employed process using the particular solar-reactor was probed based on different criteria. Meanwhile, the total operating costs was estimated to be quite low, compared to other processes.
更新日期:2020-01-13

 

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