规整异质聚结材料的构建及其含油污水处理性能研究
Construction of structured heterogeneous coalescence materials and performance in oily wastewater treatment
刘黎颖 1王雪清 2张秀芳 1谭向东 2马宁 2马传军2
作者信息
- 1. 大连工业大学轻工与化学工程学院,辽宁 大连 116034
- 2. 中石化(大连)石油化工研究院有限公司,工业废水资源化与无害化国家工程研究中心,辽宁 大连 116045
- 折叠
摘要
为提高聚四氟乙烯(PTFE)作为聚结材料时的除油效果,构建了脱脂棉(Cot)和超疏水PTFE分层叠卷(Cot+超疏水PTFE)的规整异质聚结材料.结果表明,PTFE 作为聚结床层时,出水油浓度为 220 mg/L,超疏水 PTFE 的出水油浓度为155 mg/L,PTFE的超疏水改性提高了其聚结性能;Cot+超疏水PTFE的出水油浓度为55 mg/L,进一步提升了除油效果;Cot+超疏水PTFE在最佳床层长度100 mm、孔隙率0.883 时,品质因子可达39 kPa-1,出水中几乎不存在粒径大于10 μm的油滴,床层有效处理了分散油及乳化油,且在 12h长周期运行中稳定保持94.5%的除油率.
Abstract
In order to improve the oil removal efficiency of polytetrafluoroethylene(PTFE)as a coalescing material,a structured heterogeneous coalescing material with Cot and superhydrophobic PTFE layered rolls(Cot+superhydrophobic PTFE)is constructed.Results show that the oil concentration in the effluent is 220 mg·L-1 when PTFE is served as the coalescence bed,and that is 155 mg·L-1 when superhydrophobic PTFE is used as the coalescence bed.The oil concentration in the effluent is 55 mg·L-1 when Cot+superhydrophobic PTFE is used,which further improving the oil removal efficiency.As the optimum bed length for Cot+superhydrophobic PTFE is 100 mm and the porosity is 0.883,the quality factor reaches 39 kPa-1.There is almost no oil droplet with a diameter larger than 10 μm in the effluent.In addition,it can maintain 94.5%of oil removal rate during 12 h of long cycle operation.
关键词
聚结/超疏水/异质聚结材料/脱脂棉/含油污水Key words
coalescence/superhydrophobic/heterogeneous coalescence materials/absorbent cotton/oily wastewater引用本文复制引用
基金项目
石油化工环境污染防治技术国家地方联合工程研究中心和工业废水资源化与无害化国家工程研究中心开放课题(ZC0607-0115)
出版年
2024
NETL
NSTL
万方数据