通过微结合微纳米泡浮动从废水中提升除:机制和优化
Yan Wang1,2, Jing Zhang3, Jingjing Wen3
1Department of Municipal Engineering, School of Civil Engineering, Hefei University of Technology, Hefei, China.
概括
这项研究介绍了一种新的微流和微纳米泡漂浮工艺,以实现废水中超低含量. 该技术有效地去除了总 (TP),符合严格的环境标准.
科学领域:
- 环境工程 环境工程
- 水处理技术水处理技术
背景情况:
- 缩是一个主要的环境问题,由过度排放驱动.
- 在废水废水中达到超低含量 (<0.05 mg L-1) 是一个重大挑战.
研究的目的:
- 开发和优化结合的微和微纳米泡漂浮工艺,以提高的去除.
- 调查影响这种新型废水处理技术效率的操作参数.
主要方法:
- 使用聚化和阴离子聚烯胺的优化微积分.
- 进行了直角实验,以确定最佳的液压保留时间,通风率和溶解的空气压力.
- 在不同溶解空气压力下分析了气泡大小分布和气泡流动相互作用.
主要成果:
- 通过50毫克L-1的聚化和1.0毫克L-1的阴离子聚烯胺实现了最佳的微.
- 确定了最佳条件:15分钟的液压保留时间,200Lh-1的通风率和0.60MPa的溶解空气压力.
- 在30天的时间里,二次废水中的总 (TP) 从0.86 mg L-1减少到0.036 mg L-1 (95.8%的清除效率).
- 确定高溶解气压对于产生微型和纳米泡至关重要,增强泡流碰撞和附着.
结论:
- 结合的微和微纳米泡漂浮工艺对于超低去除非常有效.
- 该技术使得在城市废水处理中遵守日益严格的排放法规.
- 优化过程参数和了解泡动态是有效去除的关键.
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