超声波增强的Fe-C/PDS系统用于污泥脱水和碳源释放:氧化和裂变过程的协同作用
Wenye Li1, Binghan Xie1, Zhipeng Li1
1State Key Laboratory of Urban-rural Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, PR China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, PR China.
Bioresource technology
|October 25, 2025
概括
超声波增强的铁碳活性过氧化硫酸盐有效地排水废物活性污泥 (WAS),并改善资源回收. 这种先进的氧化过程显著减少了污泥的体积,并提高了其适合重复使用的性能.
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.
- 材料科学 材料科学 材料科学
背景情况:
- 废物活性污泥 (WAS) 的有效排水和资源利用对于可持续的废水处理至关重要.
- 传统的方法经常在效率和资源回收方面扎.
研究的目的:
- 为了研究废弃活性污泥 (WAS) 裂变和氧化过程中的物理化学性质转化.
- 探索超声波 (美国) 协作铁碳 (Fe-C) 激活过氧化硫酸盐 (PDS) 合系统用于WAS处理的机制.
主要方法:
- 构建一个超声波增强的Fe-C/PDS合系统.
- 优化过氧化硫酸盐 (PDS),铁碳 (Fe-C) 和超声波功率水平.
- 分析污泥蛋糕的含水量,对过的特定抵抗力,可溶化学氧需求 (SCOD),挥发性固体和短链脂肪酸.
主要成果:
- 优化后的美国改进的Fe-C/PDS系统实现了61.71%的水含量,并降低了88.2%的过性能.
- 发生了显著的WAS裂变,产生630.64 mg/L的SCOD,并减少了9.16%的挥发性固体.
- 该系统增强了铁,释放了碳来源,促进了活性氧化物种 (O2 - 1O2),并增加了短链脂肪酸96.7%.
结论:
- 美国改进的Fe-C/PDS系统显示了对WAS的协同分解-降解效应.
- 这种方法为废弃物处理和减少提供了有效的战略,并提高了资源利用潜力.
相关概念视频
Bioremediation
Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.
Coagulation
Colloidal solids are solid particles suspended in solution. They are usually negatively charged, attracting a compact primary layer of positively charged ions, which attract more counterions to form an electrical double layer. Electrostatic repulsion between the charged double layers prevents the particles from colliding, stabilizing the colloids. These solids are often undesirable because they can contain toxins that are difficult to remove. Coagulation is a technique that helps aggregate and...
Microbial Wastewater Treatment
Microbial communities in aquatic ecosystems play a key role in the natural breakdown of contaminants introduced through domestic and industrial effluents. Acting as biological catalysts, these microbes change and mineralize a wide range of organic and inorganic pollutants under different redox conditions.In oxygen-rich surface waters, aerobic heterotrophs lead organic matter breakdown, using oxygen as the terminal electron acceptor to efficiently oxidize substrates to carbon dioxide and water.
Microbial 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...
Biological 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...


