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Real-time collection device and method for VSCs gas released on aeration dynamic water surface

A collection device and gas collection technology, applied in water aeration, sampling devices, measuring devices, etc., can solve problems such as difficult judgment, error in analysis results, and less odorous gas

Pending Publication Date: 2022-04-12
BEIJING UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this method, the shape of the gas-collecting air bag is controlled by the limit fixing component (fixed frame), and then the gas-collecting volume is controlled. In the actual gas-collecting process, the gas in the air bag will be pressurized due to the gravity of the air bag itself, and the air bag will be filled to the limit with gas. It is not easy to judge the critical state of the fixed component, and the adsorption of VSCs by the thin airbag itself leads to large errors in the analysis results.
[0004] At present, there are few studies on malodorous gases in sewage treatment plants, and the real-time collection devices and methods for calculating the release rate and release flux of VSCs gas released from the liquid surface of each structure unit in sewage treatment plants are relatively blank.

Method used

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  • Real-time collection device and method for VSCs gas released on aeration dynamic water surface
  • Real-time collection device and method for VSCs gas released on aeration dynamic water surface

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] combine figure 1 Provide a real-time gas collection device for aerating dynamic water surface release VSCs gas, including a box system, a gas collection system and a gas measurement system,

[0036]The box system includes a gas collection box 1, the outer side of the gas collection box 1 is provided with a foam float 4, the bottom of the gas collection box 1 is provided with a gas sample collection port, and the side wall of the gas collection box 1 is provided with a gas outlet, so A connecting pipe 8 is arranged at the gas outlet. In this embodiment, the gas outlet is arranged at the upper end of one side of the gas collection box 1, and the foam float 4 is arranged at a certain distance from the bottom of the gas collection box 1, so that the gas collection box 1 is placed in the liquid Keep the state of floating on the liquid surface when collecting gas on the surface, and at the same time make the box body below the foam float 4 submerged below the liquid surface t...

Embodiment 2

[0044] A method for real-time collection of VSCs gas released from a dynamic water surface for aeration, comprising the following steps:

[0045] (1) Gas replacement stage

[0046] Before collecting the gas, the whole device is assembled, the gas collection box 1 is put into the sewage pool of the corresponding treatment unit of the sewage treatment plant, the gas flow rate shown by the electronic flow meter 7 is recorded, and the time required for gas replacement in the gas collection box 1 is calculated The calculation formula is: t=V / Q, wherein, t is the time required for gas replacement, V is the volume of the gas collection box, and Q is the gas flow shown by the electronic flowmeter;

[0047] (2) Gas collection stage

[0048] In order to ensure that the air in the gas collection box 1 is completely replaced by the gas released from the liquid surface, after waiting twice the time required for gas replacement, set the electronic flowmeter 7 to zero and start timing, and ...

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Abstract

The invention discloses a real-time collection device and method for VSCs gas released on an aeration dynamic water surface, and relates to the technical field of sewage treatment. Comprising a box body system, a gas collecting system and a gas measuring system, the box body system comprises a gas collecting box, the gas collecting box is sleeved with a foam floater, a gas sample collecting opening is formed in the bottom of the gas collecting box, a gas outlet is formed in the side wall of the gas collecting box, and a connecting pipe is arranged at the gas outlet; and the Suma tank is communicated with the gas collecting box through a connecting pipe. According to the real-time collection device and method for the volatile sulfide gas, the VSCs gas naturally released from the aeration dynamic liquid level of a sewage treatment plant can be collected in real time, and the situation that natural release of the VSCs gas on the liquid level is interfered due to pressure change is avoided; meanwhile, a polytetrafluoroethylene connecting pipe-Suma tank inert collecting system reduces the situation that VSCs gas with active chemical properties is adsorbed by the device in the collecting process, and gas release rate, release flux, water discharge per ton and daily discharge parameters are accurately measured.

Description

technical field [0001] The invention relates to the technical field of sewage treatment, in particular to a device and method for real-time collection of VSCs gas released from a dynamic water surface by aeration. Background technique [0002] Urban sewage treatment plants play an important role in water pollution prevention and control. With the advancement of my country's urbanization process, my country's urban sewage treatment rate has increased year by year, and the number and scale of urban sewage treatment plants have continued to increase. At the same time, odor pollution in the process of sewage treatment is becoming a serious environmental problem. A large amount of malodorous gas released during the normal operation of sewage treatment plants will not only cause serious odor nuisance, but also have many potential hazards to human health. Determining the release rate, release flux, ton of water release and daily discharge of VSCs gas in each treatment unit of a se...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F7/00G01F1/00G01N1/22G01K13/00
CPCY02W10/10
Inventor 杨庆徐宗泽刘秀红董余凡蒋显聪
Owner BEIJING UNIV OF TECH
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