摘要
采用微波破乳-双旋流气浮工艺对三元复合驱采出水进行处理,含油污水首先经微波辅助破乳剂破乳,再采用双旋流气浮塔进行分离。考察了破乳剂破乳、微波破乳、微波辅助破乳剂破乳的效果,分析了双旋流气浮塔回流压力、充气量、泡沫层厚度及处理量对气浮除油效果的影响。试验结果表明:微波辅助破乳剂破乳的除油率达92.67%,比单一破乳剂破乳、微波辐射破乳的除油率分别高出5.67个百分点和24.55个百分点。在破乳剂Wd为50 mg/L,辐射功率为800 W,辐射时间为120 s,回流压力为0.10 MPa,充气量为0.75 L/min,泡沫层厚度为10 cm,处理量为0.3 L/min的试验条件下,复合工艺对含油污水的除油率可高达99.18%。
In order to improve the separation efficiency of produced water from ASP（ alkali / surfactant / polymer） flooding,a new process utilizing microwave assisted demulsification and bi-cyclone column flotation has been developed. In this paper,the demulsifying efficiency was significantly improved by microwave assisted demulsification. A novel device named bi-cyclone flotation column was developed for the separation of oily wastewater. The demulsifying efficiency using five kinds of demulsifiers,microwave and microwave assisted demulsification were investigated,respectively. The experimental results showed that the oil removal was 92. 67% by using microwave assisted demulsifying,the oil removal improved by 5. 67% and24. 55% as compared with that of demulsifier and microwave demulsification,respectively. The results showed that under the conditions as demulsifier of 10. 0 g / L,microwave power of 800 W,treatment time of 120 s,circulation pressure of 0. 10 MPa,aeration rate of 0. 75 L / min,frother layer height of 10 cm and feed rate of 0. 3 L / min,the oil removal was 99. 18% by the combined process.
出处
《环境工程》
CAS
CSCD
北大核心
2016年第5期1-5,共5页
Environmental Engineering
基金
国家自然科学基金(51104158)
关键词
采油污水
微波
破乳
气浮
oily wastewater
microwave
demulsify
flotation
