A treatment method and treatment equipment for waste gas in wood-based panel industry

A treatment method and treatment equipment technology, applied in the direction of gaseous effluent wastewater treatment, separation method, chemical instrument and method, etc., can solve the problems of large tail gas volume, low organic matter concentration, and unprocessable gas volume in the production of wood-based panels, so as to reduce external waste The amount of pollutants discharged, the obvious environmental benefits, and the effect of improving the removal effect

Active Publication Date: 2017-01-25
SUZHOU XIELI ENVIRONMENTAL PROTECTION EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The main components of the exhaust gas from wood-based panel production are fiber dust, formaldehyde, volatile organic gaseous substances (VOC) and odor, and the exhaust gas from wood-based panel production has a large amount of gas, high dust content, and high temperature, which will cause adverse effects on the environment.
The gas treatment technology currently on the market cannot deal with industrial tail gas with the characteristics of large gas volume, high dust content, high temperature, and low concentration of organic matter.

Method used

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  • A treatment method and treatment equipment for waste gas in wood-based panel industry

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Experimental program
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Effect test

Embodiment 1

[0024] This embodiment provides a treatment method for waste gas from the wood-based panel industry, comprising the following steps:

[0025] (a) The exhaust gas is introduced into the washing tower for spray treatment and then discharged directly to collect the spray liquid;

[0026] (b) After filtering the spray liquid, let it stand for stratification to obtain the first supernatant and the first precipitate;

[0027] (c) aerating and regenerating the first supernatant to degrade and remove the organic matter therein, and then standing and stratifying to obtain the second supernatant and the second precipitation;

[0028] (d) collecting the first precipitate and the second precipitate, and draining the second supernatant;

[0029] (e) pump part of the second supernatant into the washing tower for recycling, change the process of spraying and absorbing with pure water or activated sludge, and spray with a circulating liquid rich in extracellular polymers, It greatly improve...

Embodiment 2

[0032] Such as figure 1 As shown, this embodiment provides a treatment equipment for waste gas in the wood-based panel industry, which mainly includes an air guide pipe 1, a washing tower 2, a collection pipe 3, a microfilter 4, a first sedimentation tank 5, a biological regeneration tank 6 and a second sedimentation tank Pool 7 and other components.

[0033] Wherein, the lower part of the washing tower 2 communicates with the air duct 1, and a dust sensor can be installed in the washing tower 2 for measuring the concentration and particle size of the dust. The collecting pipe 3 is installed at the lower end of the washing tower 2 for collecting the spray liquid sprayed out from the washing tower 2 . The microfilter 4 communicates with the collecting pipe 3 and is used to filter and remove most of the suspended matter in the spray liquid. The first settling tank 5 is connected with the microfilter 4 to remove the remaining suspended matter in the spray liquid after precipita...

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Abstract

The invention relates to a treating method and treating device for exhaust gas generated in an artificial board industry. The treating method comprises the following steps: (a) guiding exhaust gas into a washing tower to be subjected to spraying treatment, directly discharging the treated exhaust gas, and collecting a spraying liquid; (b) filtering the spraying liquid, and leaving the filtered spraying liquid to stand for layering, so as to obtain first supernatant and first sediments; (c) performing aerated regeneration on the first supernatant to degrade and remove organic matters in the first supernatant, and leaving to stand for layering, so as to obtain second supernatant and second sediments; (d) collecting the first sediments and second sediments, and discharging the second supernatant. According to the invention, the technology for carrying out spraying absorption with water or activated sludge only is changed, the removing effect of a circulating liquid to VOC and other organic gases is greatly improved as the spraying is carried out with the circulating liquid contains rich extracellular polymeric substances; the direct contact between microorganisms and high-temperature gas is avoided, the activity of microorganisms in the device can be guaranteed furthest, and the regeneration efficiency of the circulating liquid is improved.

Description

technical field [0001] The invention belongs to the field of waste gas treatment, and relates to a treatment method of waste gas, in particular to a treatment method of waste gas in the wood-based panel industry and processing equipment thereof. Background technique [0002] With the continuous development of social economy, air pollution is becoming more and more serious, and people's working and living environment is deteriorating day by day, so people's requirements for the quality of living environment are getting higher and higher. At present, protecting the environment has become a consensus among people, so it is necessary to purify the waste gas produced by industry to prevent it from polluting the air. [0003] At present, wood-based panel factories are basically self-discharging exhaust emissions, and there is no control over the components of exhaust gases. The main components of the exhaust gas from wood-based panel production are fiber dust, formaldehyde, volat...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D47/06B01D53/18C02F9/14C02F103/18
Inventor 周培国周春芳俞根火徐敏杰
Owner SUZHOU XIELI ENVIRONMENTAL PROTECTION EQUIP
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