使用双介电屏障放电 (DDBD) 等离子技术对污水污泥进行深度排水
Muhammad Ajmal1, Yuchao Shao1, Weizhong Huo1
1School of Environment, Tsinghua University, Beijing 100084, China.
The Science of the total environment
|November 28, 2023
概括
双介电屏障排放 (DDBD) 等离子体有效地排水污水污泥,降低了超过94%的水分. 这种可持续技术可以提高废水处理厂的资源回收,同时保持有机含量.
科学领域:
- 环境工程 环境工程
- 血科学是一门科学课.
- 废物管理 废物管理
背景情况:
- 有效的污水污泥排水对于处理和资源回收至关重要.
- 传统方法在实现深度排水和保持污泥质量方面面临挑战.
- 等离子技术为污泥处理提供了一种新的方法.
研究的目的:
- 调查双介电屏障排放 (DDBD) 血对增强废物活性污泥 (WAS) 脱水的有效性.
- 确定最佳的操作参数,以最大限度地提高排水效率和能源效率.
- 评估DDBD等离子处理对污泥有机含量和结构的影响.
主要方法:
- 系统地调查操作参数 (应用电压,处理持续时间,空气料率) 使用一次性单一因素 (SFAT) 和响应表面方法 (RSM) 与中央复合设计 (CCD).
- 软传感模型的开发 (水分减少率的平方,能源效率的线性).
- 使用扫描电子显微镜 (SEM) 和富里埃转换红外光谱 (FTIR) 进行污泥性质的表征.
主要成果:
- 应用电压 (高达30kV) 和处理时间 (高达40分钟) 显著改善了湿度降低,达到94%以上.
- ANOVA证实电压和持续时间是影响脱水和能源效率的关键因素;空气输入率没有显著影响.
- DDBD等离子处理对TOC含量影响最小,并通过ROS诱导污泥解体,增强脱水,但不会造成实质性有机损失.
结论:
- DDBD等离子技术是一种可持续和有效的方法,用于深度排水污水污泥.
- 该过程通过破坏污泥流和转化有机物质来提高排水效率.
- 这项技术支持资源回收和可持续的废水处理厂运行.
相关概念视频
01:23Microbial Fuel Cells
Microbial fuel cells (MFCs) are bioelectrochemical devices that generate electricity by exploiting the metabolic processes of electrogenic bacteria. These systems provide a renewable energy source and serve as an innovative method for treating organic waste, such as wastewater.A typical MFC consists of two chambers: an anoxic (oxygen-free) compartment that houses the bacteria and an oxic (oxygen-rich) compartment that contains oxygen as the terminal electron acceptor. Many MFCs use proton...
01:30Biological Treatment of Effluent and Waste Water
Biological wastewater treatment relies on the metabolic activity of microorganisms to remove pollutants from sewage. In modern treatment systems, this process is organized into sequential stages that progressively reduce solid material, dissolved organic matter, and microbial contamination. Each stage plays a distinct role in improving water quality and preparing the effluent for safe discharge or reuse.Primary and Secondary TreatmentPrimary treatment is a physical process that removes large...