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废弃滑油的生物降解性增强废弃废水再生使用电凝预处理的废水
Li-Li Shan1,2,3, Zhao Tan1, Yu Chen1
1School of Civil Engineering and Architecture, East China Jiao Tong University, Nanchang, 330013, China.
Environmental science and pollution research international
|September 20, 2023
概括
电凝 (EC) 有效地从废滑油再生废水 (WLORW) 中去除油. 这种预处理提高了生物降解性,大大改善了未来的生物处理过程.
科学领域:
- 环境科学 环境科学
- 化学工程是化学工程的重要组成部分.
- 水处理 处理水的方法
背景情况:
- 回收使用的滑油对于资源管理和环境保护至关重要.
- 废滑油再生废水 (WLORW) 的传统生物处理面临重大挑战.
- 需要有效的预处理方法来提高WLORW的生物降解性.
研究的目的:
- 调查电凝 (EC) 作为WLORW预处理的有效性.
- 为了阐明在EC过程中去除油的机制.
- 评估EC对WLORW生物降解性的影响.
主要方法:
- 进行了电凝 (EC) 实验,变化电流密度,初始pH值和电极间距离.
- 测量了去除油的效率.
- 气色谱-质谱法 (GC-MS) 分析有机化合物.
- 生物化学氧气需求 (BOD5) 和化学氧气需求 (COD) 的比率被确定.
主要成果:
- 在15 mA/cm2,pH 7和2厘米的电极间距离下,达到最大60.06%的脱油率.
- 主要去除了乳化油颗粒 (5-10μm).
- 通过去除耐生物质有机化合物,提高了WLORW的生物降解性.
- BOD5/COD比率增长了4.31倍. 这是一个很好的例子.
结论:
- EC是WLORW的有效预处理,可去除分散和乳化油.
- 通过去除反抗性有机化合物,EC 提高了 WLORW 的生物降解性.
- 欧盟委员会显示,优化WLORW的生物处理具有显著的潜力.
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