摘要
溢油事故发生后,漂浮油会与水中的悬浮颗粒物发生相互作用形成油-悬浮颗粒物聚合体(oil-suspended particulate matter aggregates,OSAs),进而分散在水中或沉降到水底。实验室通过批量振荡实验,利用紫外分光光度法,研究了天然沙土对阿曼原油沉潜过程的影响。结果表明,当振荡频率一定时,沙土能够显著促进阿曼原油在水中的沉潜,其中大部分以半潜油的形式悬浮在水中,少部分与沙土相互作用形成了油-悬浮颗粒物聚合体。随着振荡时间的增加,阿曼原油的沉潜率迅速增大,达到最大值后趋于稳定。当沙土的浓度在100~400 mg/L范围内增加时,阿曼原油的最大沉潜率和沉潜速率提高,沉潜过程达到平衡所需要的时间缩短。
Abstrac Oil slick and suspended particles in the water can interact to form oil - suspended particulate matter aggre- gates （OSAs） which will disperse in the water column or sink to the bottom after oil spill events. A laboratory oscilla- tion experiment combined with UV spectrophotometry was performed to investigate the effect of natural sand on the submerging and sinking process of Oman crude oil. Results indicated that the sand obviously accelerated the submer- ging and sinking process of Oman crude oil under a certain frequency oscillation, Most of the oil suspended in the wa- ter column and little interacted with the particles to form OSAs. The oil submerging and sinking efficiency increased rapidly with time and then converged to a maximum. When the concentration increased from 100 to 400 mg/L, the maximum oil submerging and sinking efficiency and speed increased, and the time to equilibrium decreased.
出处
《海洋环境科学》
CAS
CSCD
北大核心
2017年第6期858-863,共6页
Marine Environmental Science
基金
辽宁省自然科学基金项目(20170540099)
关键词
溢油
油-悬浮颗粒物聚合体
振荡实验
沉潜率
沉潜速率
oil spill
oil-suspended particulate matter aggregates
oscillation experiment
submerging and sinking effi-ciency
submerging and sinking speed
