Bio-trickling filtration device and method for treating organic waste gases

A technology of organic waste gas and biological trickling filtration, which is applied in separation methods, chemical instruments and methods, and air quality improvement, etc., can solve problems such as hindering treatment efficiency, long waste gas treatment time, and unsatisfactory organic waste gas removal rate, and achieves convenient operation. , Stable treatment of organic waste gas, high removal load effect

Active Publication Date: 2012-07-18
ZHEJIANG UNIV
View PDF8 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this technical solution reduces the flow height of the nutrient solution, strengthens the gas-liquid mass transfer and biodegradability, and can handle a large amount of volatile organic waste gas, but the device takes a long time to process the waste gas, generally more than 7 days. Only when the removal rate is relatively ideal, the removal rate of organic waste gas is still not ideal when the treatment time is short
[0008] Due to the lipophilicity and hydrophobicity of...

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Bio-trickling filtration device and method for treating organic waste gases
  • Bio-trickling filtration device and method for treating organic waste gases
  • Bio-trickling filtration device and method for treating organic waste gases

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Such as figure 1 As shown, the bio-trickling filter device for treating organic waste gas of the present invention includes a bio-trickling filter tower 18 with an air outlet 13 at the top and an air inlet 7 at the bottom, and a bio-trickling filter tower 18 equipped with a biological filler 9. The bottom of 18 is used to support and fix the base 19, the liquid circulation device and the gas distribution system of the biological trickling filter tower 18, and the liquid circulation device is connected to the top and the bottom of the biological trickling filter tower 18 respectively. The base 19 is provided with a liquid storage tank 8, and the liquid storage tank 8 is provided with a corresponding water inlet and a water discharge port, and the base 19 and the liquid storage tank 8 can adopt an integral design.

[0047] The air inlet 7 of the bio-trickling filter tower 18 is connected with a gas distribution system, and the gas distribution system includes an electroma...

Embodiment 2

[0060] (1) After the bio-trickling filter device for treating organic waste gas of embodiment 1 is stabilized, the ortho-xylene waste gas is processed:

[0061] At room temperature 25°C, without adding Tween60, the waste gas of o-xylene composed of air and o-xylene gas is introduced through the gas distribution system; the residence time of the gas in the empty tower is 100s, 60s, 45s, and 40s respectively; The concentration of o-xylene in the exhaust gas is 550-600mg / m 3 , the concentration is collected through the first gas sampling port 6, and the organic waste gas is collected and measured by a gas chromatographic hydrogen ion flame detector (FID); the spraying rate of the circulating fluid is 20L / h, and the circulating fluid is a carbon-free nutrient solution, and other parameters are implemented in the same way example 1.

[0062] (2) Under different empty tower gas residence times, each treatment of organic waste gas conditions was run for 5 days, and the concentration...

Embodiment 3

[0064] (1) After the bio-trickling filter device for treating organic waste gas of embodiment 1 is stabilized, the ortho-xylene waste gas is processed:

[0065] At room temperature of 25°C, without adding Tween60, the exhaust gas of o-xylene composed of air and o-xylene gas is introduced through the gas distribution system; the concentration of the exhaust gas of o-xylene at the 7 inlets is 550-600 mg / m 3, the concentration is collected through the first gas sampling port 6 for organic waste gas, and measured by a gas chromatographic hydrogen ion flame detector (FID). Parameter is the same as embodiment 1.

[0066] (2) Investigate the variation relationship of o-xylene degradation efficiency with time, measure the concentration of o-xylene in the tail gas at 13 places of the gas outlet of biological trickling filter tower 18 every 3 hours, obtain the degradation efficiency of o-xylene waste gas by calculation, specifically The result is as image 3 shown. Such as image 3 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
The inside diameter ofaaaaaaaaaa
Login to view more

Abstract

The invention discloses a bio-trickling filtration device for treating organic waste gases. The device comprises a bio-trickling filter, a base, a liquid circulating device and a gas distribution system, wherein the bio-trickling filter is provided with a gas outlet at the top and a gas inlet at the bottom and is filled with fillers; the base is arranged at the bottom of the bio-trickling filter; the liquid circulating device is connected with the top and bottom of the bio-trickling filter respectively; and the gas distribution system comprises an electromagnetic gas pump, waste gas preparation control branches and a buffer bottle, which are sequentially connected in series. The bio-trickling filtration device has the advantages of good stability, convenience in operation, reusability and the like. The invention also discloses a bio-trickling filtration method for treating organic waste gases. The method comprises the steps of pellicle preparation and organic waste gas treatment and has higher organic waste gas treatment efficiency. The method has the following advantages that by adding the nonionic surfactant Tween 60 to a circulation liquid, the organic pollutant removal efficiency is greatly improved; and the retention time of gases in the empty filter is shorter and the removal load and efficiency are high.

Description

technical field [0001] The invention relates to the field of organic waste gas treatment devices and methods, in particular to a biological trickling filter device for treating organic waste gas and a biological trickling filter method for treating organic waste gas. Background technique [0002] With the development of industry and the acceleration of the world's urbanization process, the world's air quality is generally threatened. In the system of air pollutants, gaseous pollutants account for more than 75% of the world's annual emissions of air pollutants. following SO 2 and NO X After the research upsurge, the pollution control of volatile organic compounds (Volatile Organic Compounds) has become another focus of attention of countries all over the world. [0003] Biological method has the advantages of good treatment effect, low investment and operating costs, mild reaction conditions (normal temperature, normal pressure), no secondary pollution, easy management and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
IPC IPC(8): B01D53/84B01D53/44B01D53/72
CPCY02A50/20
Inventor 李伟周学霞王向前
Owner ZHEJIANG UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap