厌氧/好氧生物过程处理高浓度HPAM污水的效果评价

Evaluation of HPAM Treatment Effect during the Anaerobic-aerobic Biological Processes

部分水解聚丙烯酰胺(HPAM)被广泛的应用于油田采油过程中,它随着油田采出水进入水环境中,由于其特殊的物理和化学性质,会给环境安全带来长期的潜在威胁。在众多处理方法中,生物方法显示出越来越多的优越性,且随着不同氧环境下生物方法的不断深入研究,单一氧环境逐渐显示出了其局限性。实验中将厌氧和好氧生物过程结合起来,利用两株HPAM降解菌(PAM-2,PAM-F1)和活性污泥处理500 g·L-1HPAM模拟污水。利用淀粉碘化镉法、总有机碳(TOC)、高效液相色谱(HPLC)及扫描电镜(SEM)等多种检测方法与手段,评价其降解效果。结果表明,根据淀粉碘化镉法HPAM降解率约为86.21%;根据TOC法HPAM降解率约为32.93%;根据剪切粘度法HPAM粘度降低率约为75.75%。此外,SEM结果也佐证了随着活性污泥不断地熟化,HPAM不断发生降解。研究表明,厌氧和好氧生物过程联用可以有效的处理高浓度HPAM污水。

Partially hydrolyzed polyacrylamide （HPAM） contained in oilfield which is extensively used for oil extraction produced waste water entering the groundwater system and having threat to the safety of the plants and animals. Among many methods to deal with this issue, biodegradation is an efficient way to disposal oil field waste water. In the paper, combined anaerobic and aerobic biological processes based screened bacteria （PAM-2, PAM-F1） and sludge were used due to single oxygen gradually showed its limitations. And parameters such as TOC （Total Organic Carbon）, shear viscosity and other were measured aside from conventional starch cadmium iodide method. The results indicated that the removal efficiency of HPAM could reach 86.21%, 32.93 % and 75.75 % respectively based on the starch cadmium iodide method. TOC and shear viscosity. In addition, the HPLC results also illustrated the degradation of HPAM. Studies showed that anaerobic-aerobic biological process can deal with high concentration HPAM sewage effectively.