固态粒子因子对浮动法处理的油性泥石油固态分离的影响和机制
Shuhui Wu1, Xue Yao1, Xiao Wang1
1School of Agricultural Engineering and Food Science, Shandong University of Technology, Zibo 255000, China.
Toxics
|January 8, 2025
概括
研究油性污泥 (OS) 颗粒大小对油固体分离的影响,发现较粗的颗粒提高了效率. 确定了最佳漂浮条件,将残留油含量降低到混合尺寸OS的2.63%.
科学领域:
- 环境工程 环境工程
- 分离科学 分离科学
- 材料科学 材料科学 材料科学
背景情况:
- 固体相组成显著影响油性污泥 (OS) 油固体分离效率.
- 了解颗粒大小的影响对于优化OS处理至关重要.
研究的目的:
- 研究固态粒子因子对OS残留阶段的油含量的影响和机制.
- 通过颗粒大小操纵和漂浮参数优化,提高油固体分离效率.
主要方法:
- 漂浮实验是在没有漂浮试剂的单尺寸和混合尺寸沙子操作系统上进行的.
- 研究的粒子大小,漂浮温度 (Tp),漂浮时间 (Tt),叶轮转速 (Rs) 和液体/固体比率 (L/OS) 的影响.
- 利用扫描电子显微镜 (SEM),富里埃变换红外光谱 (FT-IR),经典第一阶模型和响应表面方法 (RSM).
主要成果:
- 在残基阶段的油含量随着固体阶段颗粒大小的增加而减少,对于单一大小的沙子OS.
- 确定了最佳漂浮条件:Tp 50 °C,Tt 25 分钟,Rs 1450 r/min,L/OS 12:1.
- 混合尺寸的沙子OS显示出更明显的油固体分离,使用RSM优化剩余油含量为2.63%,确定RS为主要控制因素.
结论:
- 粗粒子OS在油固体分离过程中具有优势.
- 在OS固态阶段的不同颗粒成分促进了油固态分离.
- 这项研究提供了关键的过程参数和有效的OS处理的理论基础.
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