Characteristics of Advanced Treatment of Treated Petrochemical Water by O 3 -BAC and Analysis of Consortium Structure

• Published in: Huanjing kexue Vol. 39; no. 10; p. 4628
• Main Authors: Zhang, Chao, Shan, Ming-Hao, Xu, Dan-Ning, Gu, Ming-Zhe, Dai, Bei-Bei, Ji, Xuan, Sun, Jing-Mei
• Format: Journal Article
• Language: Chinese
• Published: China 08.10.2018
• Subjects: Biological Oxygen Demand Analysis; Charcoal; Microbial Consortia; Oil and Gas Industry; Oxidation-Reduction; Ozone; Waste Water; Water Pollutants, Chemical - isolation & purification; Water Purification; relative molecular weight; treated petrochemical water; consortium structure; advanced treatment; O3-BAC
• ISSN: 0250-3301

The advanced treatment of treated petrochemical water by Ozone-Biological Activated Carbon (O -BAC) was carried out in this study. The effect of O on the removal of Chemical Oxygen Demand (COD) and Spectral Absorption Coefficient (UV ) were investigated. The characteristics of organic matter and the microbial consortium structure of BAC were also investigated at 20 mg·L of O dosage concentration, 40 min of O single stage contact time and 1.5 h of the empty bed residence time of BAC. Results showed that the effluent COD concentration of O -BAC was 24 mg·L with the removal efficiency of 40.4%. The COD removal efficiency of O -BAC was higher than that for the BAC process. The UV removal efficiency of O -BAC was 55.1%. Meanwhile, UV correlated with COD with a correlation coefficient of 0.89. The percentage of dissolved organic matters with relative molecular weight less than 1×10 increased from 69.0% to 87.0% after O oxidation. The NPOC removal efficiency of O -BAC (45.8%) was higher than that of the BAC process