相关实验视频

Updated: May 5, 2026

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Development of Sulfidogenic Sludge from Marine Sediments and Trichloroethylene Reduction in an Upflow Anaerobic Sludge Blanket Reactor

Published on: October 15, 2015

部分化污泥的超声波诱导的结构变化:解开改善去除机制

Yafen Lai¹, Yichun Zhu¹, Xiaochao Li²

¹Jiangxi Key Laboratory of Mining & Metallurgy Environmental Pollution Control, Jiangxi University of Science and Technology, Ganzhou, 341000, China.

Environmental research

|July 20, 2024

概括

低强度超声波通过改善部分化来增强生物去除. 这种处理分散了污泥,增加了氨基单氧酶和氧胺氧降解酶的活性,以提高去除效率.

科学领域:

环境科学环境科学
生物技术是生物技术.
废水处理废水处理

背景情况:

生物除对于废水处理至关重要.
部分化是生物去除的一个关键过程.
提高部分化效率是一个正在进行的研究领域.

研究的目的:

为了研究低强度超声波对部分化的影响.
分析超声波对污泥结构和特性的影响.
阐明污泥结构变化与去除性能之间的关系.

主要方法:

应用低强度超声波 (200W,6分钟) 来增强部分化.
使用扩展的德贾古因-兰道-维维-奥弗比克 (XDLVO) 理论分析泥结构和特性.
测量氨基单氧酶 (AMO) 和氧胺氧降解酶 (HAO) 的活性.

主要成果:

超声波处理显著增加了废水中的亚酸盐度 (40.16 mg/L vs 24.48 mg/L).
氨基单氧化酶 (AMO) 的活性增加了67.76%,氧胺氧降解酶 (HAO) 的活性增加了41.12%.
超声波处理通过增加紧密结合的细胞外聚合物 (TB-EPS) 的静电相互作用能量和水友性来分散污泥流.

结论:

低强度超声波有效地增强了部分化,改善了生物去除.
超声波引起的污泥结构变化,特别是TB-EPS增加的水友性和负电荷,是提高性能的关键.
这项研究提供了通过超声波技术优化废水处理过程的见解.

关键词:

低强度超声波低强度的超声波移除的方法移除的方法部分化污泥的部分化污泥污泥结构结构污泥结构在XDLVO理论中,

更多相关视频

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Calibrated Passive Sampling - Multi-plot Field Measurements of NH3 Emissions with a Combination of Dynamic Tube Method and Passive Samplers

Published on: March 21, 2016

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Measurement of the Potential Rates of Dissimilatory Nitrate Reduction to Ammonium Based on 14NH4+/15NH4+ Analyses via Sequential Conversion to N2O

Published on: October 7, 2020

相关概念视频

Inorganic Nitrogen Assimilation

Inorganic Nitrogen Assimilation

Nitrogen is an essential element in biological systems, forming a crucial component of proteins, nucleic acids, and other cellular constituents. Many bacteria and archaea acquire nitrogen in the form of nitrate (NO₃⁻) or ammonia (NH₃), which are then assimilated into biomolecules through specific enzymatic pathways.Assimilatory Nitrate ReductionWhen nitrate enters the cell, it undergoes a two-step reduction process known as assimilatory nitrate reduction. Initially, the enzyme...

Microbial Bioremediation of Uranium

Microbial Bioremediation of Uranium

Microorganisms play a critical role in the transformation and immobilization of uranium in contaminated environments through four main pathways: bioreduction, biosorption, bioaccumulation, and biomineralization. These mechanisms reduce uranium’s toxicity and prevent its migration through groundwater systems, offering sustainable approaches for in situ bioremediation.Bioreduction of UraniumBioreduction is driven by anaerobic bacteria such as certain strains of Geobacter and Shewanella,...