3株高效石油降解菌对SBR处理含油废水的强化作用  

Enhancement on SBR treatment for oily wastewater by three strains of highly efficient petroleum-degrading bacteria

作　　者：李倩 陈吉祥[1] 杨轩 彭程 王天烽[1] LI Qian;CHEN Jixiang;YANG Xuan;PENG Cheng;WANG Tianfeng(College of Petrochemical Engineering,Lanzhou University of Technology,Lanzhou 730050,China)

机构地区：[1]兰州理工大学石油化工学院,甘肃兰州730050

出　　处：《工业水处理》2024年第11期52-60,共9页Industrial Water Treatment

基　　金：国家自然科学基金项目(42267017,52360019,51741805);甘肃省自然科学基金项目(22JR5RA257)。

摘　　要：研究了3株不同高效石油降解菌株用于序批式活性污泥法(SBR)处理含油废水的效果。结果表明,投加菌液苍白杆菌FP1、假单胞菌X1、红平红球菌KB1的SBR,COD平均去除率分别为90.8%、92.8%、98.2%;石油类物质平均去除率分别为79.1%、80.0%、92.8%;NH_(4)^(+)-N平均去除率分别为87.5%、91.4%、94.7%;TP平均去除率分别为23.8%、30.9%、44.4%。与未投加石油降解菌相比,投加石油降解菌株能显著提高SBR对含油废水中各污染物的去除效率,同时系统运行稳定,耐冲击负荷能力高。实验结果还表明在SBR中投加Fe Cl3利用化学除磷协助生物除磷可提高系统对TP的去除率,同时提高活性污泥的絮凝沉降性能,增加系统内活性生物量。该研究为生物强化SBR处理含油废水的工艺设计与设备运行提供了参考,石油降解菌强化SBR技术有望应用于含油废水生物处理。This paper investigated the effect of three efficient petroleum-degrading bacterial strains on oily wastewater treatment by sequencing batch reactor activated sludge process(SBR).The results showed that the average removal rates of COD were 90.8%,92.8%,and 98.2%,respectively,the average removal rates of oily substance were 79.1%,80.0%,and 92.8%,respectively,the average removal rates of NH_(4)^(+)-N were 87.5%,91.4%,and 94.7%,respectively,and the average removal rates of TP were 23.8%,30.9%and 44.4%,respectively,in the SBR with the addition of bacterial strains Ochrobactrum sp.FP1,Pseudomonas sp.X1 and Rhodococcus erythropolis KB1.Compared with the unspiked petroleumdegrading bacteria,the spiked petroleum-degrading bacterial strains could significantly improve the removal efficiency of SBR for each pollutant in the oily wastewater.Meanwhile,the system operation was stable and the shock load resistance was high.The experimental results also showed that the addition of FeCl3 to the SBR could improve the removal of TP by using chemical phosphorus removal to assist biological phosphorus removal,and improve the flocculation and sedimentation performance of activated sludge and increase the active biomass in the system.This study provided a reference for the process design and equipment operation of bio-enhanced SBR for the treatment of oily wastewater.The petroleumdegrading bacteria-enhanced SBR technology is expected to be applied to the biological treatment of oily wastewater.

关 键 词：生物强化 含油废水 SBR 石油降解菌 

分 类 号：X703[环境科学与工程—环境工程] TE992[石油与天然气工程—石油机械设备]