O3/UV和O3/H2O2氧化法处理聚丙烯酰胺采油废水  

Treatment of Polymer Flooding Oil-Extraction Wastewater by O_3/UV and O_3/H_2O_2 Oxidation

作　　者：陈颖[1] 孙贤波[1] 陈强[1] 

机构地区：[1]华东理工大学资源与环境工程学院,国家环境保护化工过程环境风险评价与控制重点实验室,上海200237

出　　处：《华东理工大学学报（自然科学版）》2016年第5期658-663,共6页Journal of East China University of Science and Technology

摘　　要：为降低油田采油废水的化学需氧量(COD)负荷,提高其可生化性,采用O_3/UV和O_3/H_2O_2氧化法对聚丙烯酰胺采油废水进行处理,分别考察了氧化时间、HO_2O_2与O_3物质的量之比、pH以及紫外灯功率对采油废水处理效果的影响。结果表明,与采用单独臭氧氧化相比,O_3/UV以及O_3/H_2O_2联用技术对采油废水中的COD及聚丙烯酰胺(PAM)的去除效果更为显著,废水可生化性均有所提高,且O_3/H_2O_2氧化法对采油废水的可生化性提高程度更大。O_3/UV氧化法对于聚丙烯酰胺采油废水可生化性影响的最佳条件为:pH=8.0,O_3质量浓度为19.7 mg/L,紫外灯功率为18 W,氧化时间为30 min,可生化性(B/C)提高至0.092;O_3/H_2O_2氧化法对于聚丙烯酰胺采油废水可生化性影响的最佳条件为:pH=8.0,O_3质量浓度为19.7 mg/L,H_2O_2与O_3物质的量之比为0.3,氧化时间为30 min,B/C提高至0.175。氧化预处理提高了废水的可生化性,减轻了后续生化处理压力。In order to reduce the effluent COD and improve the biodegradability of the polymer flooding oil-extraction wastewater,the wastewater was pretreated by O 3/U V and O3/H 2O2 process. The effects of influential factors,such as oxidation time,mole ratio of O3 and H 20 2 , pH and the power of UV light on the treatment of oil-field wastewater by O3/UV and O3/H2O2 were investigated. The results reveal that both of these two oxidation methods can improve the removal efficiency of COD and PAM of the wastewater more obviously compared with single ozone. The improvement of the biodegradability of the wastewater by 03/H2O2 was the most obvious. Taking into account of practical engineering application, under the following conditions ： pH = 8. 0 , O3 concentration was 19. 7 mg/L , reaction time was 30 min at 18 W UV lamp irradiation, B/C was up to 0. 092 by O3/UV process. And under the following conditions ： pH = 8. 0, O3 concentration was 19. 7 mg/L , reaction time was 30 min and mole ratio of O3 and H 20 2 was 0. 3, B/C was up to 0. 175 by O3/H2O2 process. The biodegradability of oil-field wastewater was obviously increased by oxidation pretreatment, which could reduce the pressure of follow-up biochemical treatment.

关 键 词：采油废水 可生化性 O3/UV O3/H2O 

分 类 号：X703.1[环境科学与工程—环境工程]