菌藻共生系统对模拟油田驱采废水中PAM和DIC去除的处理  

Treatment of Bacterial-Algal Symbiosis System for PAM and DIC Removal in Simulated Oilfield Flooding Wastewater

作　　者：王作超[1] 唐春晓 张慧超 李欣 上官默涵 安众一 WANG Zuochao;TANG Chunxiao;ZHANG Huichao;LI Xin;SHANGGUAN Mohan;AN Zhongyi(The First Company of China Eighth Engineering Bureau Co.,Ltd.,Jinan 250100,China;College of Civil Engineering,Yantai University,Yantai 264005,China)

机构地区：[1]中建八局第一建设有限公司,山东济南250100 [2]烟台大学土木工程学院,山东烟台264005

出　　处：《净水技术》2023年第9期124-131,共8页Water Purification Technology

基　　金：国家自然科学基金项目(51438006);山东省重点研发项目(2016102941070)。

摘　　要：油田三元复合驱采废水中总溶解性无机碳(DIC)浓度高、总量大,现有以细菌为主的生物处理方法无法有效地处理DIC,尾水排放后会转化成CO_(2),违背了我国“碳减排”的总体目标。研究以旋转式菌藻共生生物膜系统处理模拟石油驱采废水,达到同步削减DIC和聚丙烯酰胺(PAM)的目的。文章探究了不同PAM、总碳(TC)、总氮(TN)浓度条件下,体系对PAM、总有机碳(TOC)、无机碳(IC)、溶液黏度的减排效果。结果表明,菌藻共生系统在有效地降低出水中DIC浓度的同时,对PAM降解效果明显;DIC的去除率能达到70%~80%,PAM的降解率可以达到60%~70%。投加共代谢氮源可以提高PAM的降解效果,但DIC去除效果明显下降。扫描电镜图像显示,处理后的PAM结构出现了明显的破坏。针对菌藻生物膜的16S rDNA高通量测序结果表明,藻类、细菌、真菌均在PAM和DIC的去除方面发挥了重要作用。The total dissolved inorganic carbon(DIC)in oil water from alkali surfactant polymer(ASP)produced water is high concentration and the total amount is large.The existing bacterial-based biological treatment method cannot effectively treat DIC,and the tailwater will be converted into CO_(2) after discharge,which is against the overall goal of"carbon emission reduction"at home.In this study,a rotating bacterial-algal symbiotic biofilm system was used to treat simulated petroleum drive-off wastewater to achieve the simultaneous reduction of DIC and polyacrylamide(PAM).The effect of the system on the reduction of PAM,total organic carbon(TOC),IC and solution viscosity under different PAM,total carbon(TC)and total nitrogen(TN)concentrations were investigated.Results showed that the bacteria-algae symbiotic system could effectively reduce the concentration of DIC in the effluent while having a significant effect on the degradation of PAM;The removal rate of DIC could reach 70%~80%and the degradation rate of PAM could reach 60%~70%.The addition of co-metabolised nitrogen source could improve the degradation effect of PAM,but the DIC removal effect was obviously reduced.Scanning electron microscope images showed that the structure of the treated PAM appeared to be significantly damaged.High-throughput sequencing of 16S rDNA against bacterial-algal biofilms showed that algae,bacteria and fungi all played an important role in the removal of PAM and DIC.

关 键 词：油田驱采出水 旋转藻生物膜反应器 菌藻共生系统 溶解性无机碳 聚丙烯酰胺 

分 类 号：X703[环境科学与工程—环境工程]