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Method and device for processing laboratory exhaust gas

A waste gas treatment and laboratory technology, applied in separation methods, water/sewage treatment, chemical instruments and methods, etc., can solve difficult problems such as effective treatment of waste gas, and achieve the effect of improving biodegradability and no secondary pollution

Inactive Publication Date: 2012-09-19
SOUTH CHINA UNIV OF TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the traditional classification method is difficult to use the effective treatment of waste gas

Method used

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  • Method and device for processing laboratory exhaust gas
  • Method and device for processing laboratory exhaust gas
  • Method and device for processing laboratory exhaust gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] 1. Target exhaust gas

[0063] Hospital exhaust gas, mainly volatile formaldehyde, with an exhaust gas volume of 2000m 3 / h, the formaldehyde content is 8~50mg / m 3 , containing some volatile gases of disinfectants, such as ethanol, hydrogen peroxide, etc.

[0064] 2. Process parameters

[0065] use as figure 2 and image 3 For the shown device, the specific process parameters are as follows:

[0066] (1) Centrifuge speed 1200r.p.m

[0067] (2) Motor power 2.2kw

[0068] (3) Centrifugal washing machine: diameter × height = 400mm × 800mm

[0069] (4) Neutralization pool 7, because the waste gas contains less acid, it is mainly used for regulating the pool.

[0070] (5) Inner electrolytic cell 9:

[0071] Electrolytic material: It is composed of calcium carbonate, iron powder, carbon powder, magnesium phosphate salt, copper powder and titanium dioxide powder, and the proportions of each component are: 2%, 60%, 33%, 4.4%, 0.3%, 0.3% %.

[0072] The preparation m...

Embodiment 2

[0081] 1. Target exhaust gas

[0082] The waste gas is the acid waste gas discharged from the drug cabinet, which contains perchloric acid, hydrogen chloride, sulfuric acid, nitric acid and its mixture aqua regia. Exhaust gas volume at 450m 3 / h~800m 3 / h.

[0083] 2. Process parameters

[0084] use as figure 2 and image 3 For the shown device, the specific process parameters are as follows:

[0085] (1) The speed of the centrifuge is 1350r.m.p.

[0086] (2) Motor power 0.75kw

[0087] (3) Centrifugal washing machine: diameter × height = 250mm × 700mm

[0088] (4) Neutralize pool 7 and adjust the pH to 8

[0089] (5) Inner electrolytic cell 9:

[0090] Electrolytic material: It is composed of calcium carbonate, iron powder, and carbon powder, and the proportions of each component are: 25%, 40%, 35%,

[0091] (6) Biological adsorption pool 10:

[0092] Filler: Suspended activated carbon powder, cellulose ether filler can be omitted.

[0093] 3. The effect of wast...

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Abstract

The invention relates to exhaust gas treatment and particularly discloses a method and a device for processing laboratory exhaust gas treatment. The method is as follows: the laboratory exhaust gas is mixed and contacted with scouring water which contains microorganisms and powdered biological adsorptive padding; the processed exhaust gas is discharged after being sterilized and the waste water from the treatment process undergoes the treatments of neutralization, catalyzed internal electrolysis and biosorption process to be restored to scouring water; and the mixing and contacting process adopts centrifugal swirling flow washing mode. The device comprises an exhaust gas washing treatment unit and a waste water treatment unit. The exhaust gas treatment unit is a centrifugal washing machine which is provided with a gas guide plate and a swirling flow plate. The waste water treatment unit consists of a reclaimed water pool, a catalyzed internal electrolysis pool and a biosorption pool which are sequentially connected end to end. The method and the device are widely applicable to the treatment of various laboratory exhaust gases.

Description

technical field [0001] The invention relates to a method for treating waste gas, in particular to a method and device for treating laboratory waste gas. Background technique [0002] Due to the complex composition and variety of substances during the experiment, and the irregular discharge of exhaust gas, it is very difficult to use conventional technology to treat laboratory exhaust gas; and in the construction of laboratory wastewater, as a precision scientific research unit, the surrounding environment must be considered mutual coordination. If the exhaust gas generated during the experiment is not treated, it will directly cause harm to the surrounding air. Some of these harmful exhaust gases will be directly discharged into the scientific research unit, causing great harm to the health of the experimenters. [0003] At present, in laboratory wastewater treatment, the main methods used are dry adsorption method, water spray method, nano photocatalysis method, and low t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/84B01D53/96C02F1/461
CPCY02A50/20
Inventor 黄家声周瑞兴黄少斌刘杰黄瑞敏王永丽
Owner SOUTH CHINA UNIV OF TECH
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