摘要
石油开采过程中产生的大量含油废水已经成为困扰油田生产的重大难题。采用半焦作为吸附剂,对油田含油废水进行深度处理,可有效解决含油废水的环境问题并实现水资源的再利用。但半焦吸附能力有限,分别采用HNO3、H2O2、KOH、高温煅烧等方法对半焦进行活化处理,以提高其除油效果。实验中,分析表征了不同方法活化后半焦的表面物理和化学性质,对比了含油废水的处理效果。实验结果表明,活化后半焦的吸附能力均提高。其中,以KOH活化效果最佳,可使半焦的瞬时平衡吸附量提升近1倍。
The large quantity of oily wastewater generated in the oil fields has been a serious problem for oil production. Using semi-coke as an adsorbent for advanced treatment of the wastewater may benefit to solve the envi- ronmental problem and to realize recycle of water resource. Since raw semi coke typically has a limited capacity for oil, four types of activation （employing HNO~, H202, KOH, N2 as the activation agent） were performed on a semi- coke sample to improve its oil adsorptive capacity of wastewater. The physical and chemical properties of the raw and activated （modified） semi-coke samples were characterized and analyzed, and effects of activation on the adsorptive ca- pacities of the modified semi-coke were studied. The KOH modified semi-coke was the most effective adsorbent among these samples; its oil capacity was nearly twice as much as that of the raw semi-coke.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2008年第9期23-25,35,共4页
Environmental Pollution & Control
基金
国家“十一五”计划项目(No.2006BAB04B02)
关键词
半焦
含油废水
吸附
活化
semi-coke
oily wastewater
adsorption
modification
