文献类型：期刊文献

英文题名：A novel physical-biochemical treatment of refinery wastewater

作者：Gu, Yong[1];Dai, Pinyi[1];Wu, Tao[1];Yuan, Fang[1];Yang, Qiang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Mech & Power Engn, Shanghai 200237, Peoples R China;[2]130 Meilong Rd, Shanghai, Peoples R China

年份：2024

卷号：354

外文期刊名：JOURNAL OF ENVIRONMENTAL MANAGEMENT

收录：;EI(收录号：20240815609818);WOS:【SCI-EXPANDED(收录号:WOS:001188390200001)】；

基金：Funding: This work was supported by the National Natural Science Foundation of China (Grant Nos. 52025103, 52200053) .

语种：英文

外文关键词：Refinery wastewater; Swirler; Coalescence filtration; Airlift enhanced loop bioreactor

摘要：As of 2022, China has achieved a crude oil processing capacity of 918 million tons, leading to a notable escalation in the production of refinery wastewater. The composition of refinery wastewater is intricate and diverse, posing a substantial challenge to its treatment. In order to facilitate appropriate discharge or reuse, an exhaustive separation process is imperative for refinery wastewater. Conventional pre-treatment processes typically employ inclined plate separators and dissolved air flotation (DAF) for the removal of oil and suspended solids (SS), while sequencing batch reactor (SBR), oxidation ditch, or biological aerated filter (BAF) are employed for the biological treatment process. However, these approaches encounter challenges such as a large spatial footprint, suboptimal treatment efficiency, and high energy consumption. In response to these challenges, this study introduces a novel integrated apparatus consisting of a high -efficiency oil remover (HEOR), coalescence oil remover (COR), and an airlift -enhanced loop bioreactor (AELR). A pilot -scale test was conducted to evaluate the performance of this integrated system in practical field applications. The pilot -scale tests reveal that, without the addition of chemical agents, the petroleum removal efficiency of "HEOR + COR" system was 1.2 times that of DAF. Compared with the SBR system, AELR's volume loading was increased by 1.56 times. The effluent quality achieved in the pilot -scale tests attained parity with that the original process. The "HEOR + COR + AELR" system exhibited energy and carbon emissions reduction of 28% and 30% compared to the "DAF + SBR" system, respectively. Therefore, the operating costs was reduced by approximate 1 Chinese Yuan (CNY) per ton of treated water. This technological advancement serves as a valuable reference for the implementation of low -carbon treatment of refinery wastewater.