Kim Eunji, Yulisa Arma, Kim Sangmin, Hwang Seokhwan
Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, South Korea.
Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), 77 Cheongam-Ro, Nam-Gu, Pohang, Gyeongbuk, South Korea.
Bioresour Technol. 2020 Jun;306:123178. doi: 10.1016/j.biortech.2020.123178. Epub 2020 Mar 13.
This research investigated the process efficiency and microbial communities and their diversity in a full-scale wastewater treatment plant (WWTP) fed with petroleum refining wastewater (PRW) that contained toxic hydrocarbon contaminants and carcinogens. Process parameters and bacterial community structures were monitored for six months to create a link between microbial dynamics and influent characteristics of petrochemical wastewater. The WWTP showed a stable process with efficiencies >70% for both soluble chemical oxygen demand (SCOD) and benzene removal. More than 30 genera were identified by metagenomic analysis, and the bacterial populations changed significantly during the operation period. Among them, genera Sulfuritalea (11.9 ± 3.5%), Ottowia (4.3 ± 2.2%), Thauera (3.1 ± 7.2%) and Hyphomicrobium (1.3 ± 0.7%) were dominant and important bacterial genera that may have been responsible for the degradation of aromatic compounds such as benzene and phenol.
本研究调查了一座以含有有毒碳氢化合物污染物和致癌物的石油炼制废水（PRW）为进水的全尺寸污水处理厂（WWTP）的工艺效率、微生物群落及其多样性。对工艺参数和细菌群落结构进行了为期六个月的监测，以建立微生物动态与石化废水进水特征之间的联系。该污水处理厂显示出稳定的工艺，可溶性化学需氧量（SCOD）和苯的去除效率均>70%。通过宏基因组分析鉴定出30多个属，且细菌种群在运行期间发生了显著变化。其中，硫硫单胞菌属（11.9±3.5%）、奥托氏菌属（4.3±2.2%）、陶厄氏菌属（3.1±7.2%）和生丝微菌属（1.3±0.7%）是占主导地位的重要细菌属，可能负责苯和苯酚等芳香族化合物的降解。
