相关实验视频

Updated: Jul 21, 2025

Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction

Capturing Actively Produced Microbial Volatile Organic Compounds from Human-Associated Samples with Vacuum-Assisted Sorbent Extraction

Published on: June 1, 2022

城市污水处理厂排放挥发性硫化合物的多维分析

Zongze Xu¹, Qing Yang¹, Xiancong Jiang¹

¹National Engineering Laboratory for Advanced Municipal Wastewater Treatment and Reuse Technology, Beijing University of Technology, Beijing, 100124, China.

Journal of environmental management

|July 27, 2023

概括

来自废水处理厂的挥发性硫化合物 (VSC) 在初级沉积中最高,并且随着处理而减少. 季节性和废水质量因素,如温度和COD影响VSC释放,使成本有效的控制策略成为可能.

科学领域:

环境科学环境科学
环境工程环境工程
分析化学分析化学

背景情况:

污水处理厂 (WWTPs) 释放挥发性硫化合物 (VSCs),影响空气质量.
了解VSC排放动态对于有效的气味控制和过程优化至关重要.

研究的目的:

评估无氧/氧 (A/O) WWTP 的时间和空间 VSC 排放特征.
探索废水质量参数与VSC释放之间的关系.
制定一个具有成本效益的控制策略,用于VSC排放.

主要方法:

在不同A/O WWTP单元的水空接口上长期监测VSC.
使用动态和静态室收集VSC.
使用气体染色学量化VSCs.
在VSC流和废水质量参数 (温度,硫酸盐,COD) 之间的相关性分析.

主要成果:

VSC排放流量以以下顺序下降:初级沉积 (PST) > 无氧区域 (ANA) > 氧气部分1 (OX1).
在后期的治疗阶段 (OX2,OX3,FSB) 无法检测到VSC.
VSC释放能力按照这个顺序进行:夏季 > 秋季 > 春季 > 冬季,排放峰值在7月至9月.
VSC排放流与废水温度,硫酸盐度和化学氧气需求 (COD) 有着强烈的相关性.

结论:

建立了基于温度,硫酸盐和COD的VSC排放流量的经验方程.
提出了一种经济高效的控制策略,以减少除臭的运营成本和能源消耗.
强调基于特定处理单位和季节性变化监测和控制VSC的重要性.

关键词:

经济效率经济效率经济效率排放流是指排放的流量.经验性的排放模型.易挥发的硫化合物易挥发的硫化合物废水处理厂废水处理厂

更多相关视频

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Measurement of H2S in Crude Oil and Crude Oil Headspace Using Multidimensional Gas Chromatography, Deans Switching and Sulfur-selective Detection

Published on: December 10, 2015

Quantitative Analysis by Thermogravimetry-Mass Spectrum Analysis for Reactions with Evolved Gases

Quantitative Analysis by Thermogravimetry-Mass Spectrum Analysis for Reactions with Evolved Gases

Published on: October 29, 2018

相关概念视频

Volatilization

Volatilization

Volatilization gravimetry is an analytical technique that measures the mass lost due to the volatilization of the substance. This technique is used to estimate the amount of volatile material in a sample. To perform this method, heat a known amount of the sample to a high temperature in a crucible or other suitable vessel. The volatile substance in the sample evaporates, and the vapor is completely expelled from the crucible either by heating the sample or bubbling a stream of inert gas through...