高盐石油废水中有机物的生物降解研究  

Study on biodegradation of organic matter in high salt petroleum wastewater

作　　者：冯炘[1] 杨晓林 夏茜琳 张莉 解玉红[1,2] FENG Xin;YANG Xiaolin;XIA Xilin;ZHANG Li;XIE Yuhong(School of Environmental Science and Safety Engineering,Tianjin University of Technology,Tianjin 300384,China;Ecolite(Tianjin)Environmental Technology Development Co.,Ltd.,Tianjin 300391,China)

机构地区：[1]天津理工大学环境科学与安全工程学院,天津300384 [2]易科力(天津)环保科技发展有限公司,天津300391

出　　处：《天津理工大学学报》2023年第6期70-76,共7页Journal of Tianjin University of Technology

基　　金：国家自然科学基金(52130208);天津市科技支撑计划重点项目(13050315)。

摘　　要：为解决石油开发过程中所产生的高盐含油废水等问题,采用生物法降解高盐石油废水,其中,较高的盐度能够抑制异养细菌代谢功能同时大大降低其修复效率.从高盐度石油废水中筛选出6株优势和3株非优势的耐盐石油降解菌,这9株菌多为革兰氏阴性杆菌,均可在1%~5%高盐环境下正常生长,并将其应用于曝气生物滤池处理工艺,对高盐石油废水进行降解研究.水力停留时间为5 h,气水比为3∶1,化学需氧量(chemical oxygen demand,COD)的平均去除率可达50%,出水COD值维持在50 mg/L以下,符合城镇污水排放1级A标准.To solve problems of high salt petroleum wastewater generated during the oil development process,biological methods are used to degrade high salt petroleum wastewater.The high salinity can inhibit the metabolic function of heterotrophic bacteria while greatly reducing its remediation efficiency.In this paper,six dominant and three non-dominant salt-resistant bacteria are screened from high salt petroleum wastewater.Most of the nine strains are Gram-negative bacteria which could grow normally in 1%~5%high salinity environment and it is applied to the treatment process of the biological aerated filter(BAF)to study the degradation of high salt petroleum wastewater.The hydraulic retention time is set to 5 h and the gas-water ratio is 3:1.The average removal rate of chemical oxygen demand(COD)can reach about 50%and the effluent COD value can basically remain below 50 mg/L.It meets the grade A standard of urban sewage discharge.

关 键 词：耐盐石油降解菌 高盐石油废水 曝气生物滤池 化学需氧量 

分 类 号：Q89[生物学]