CN104941357A - Treating method and treating device for exhaust gas generated in artificial board industry - Google Patents
Treating method and treating device for exhaust gas generated in artificial board industry Download PDFInfo
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- CN104941357A CN104941357A CN201510313937.9A CN201510313937A CN104941357A CN 104941357 A CN104941357 A CN 104941357A CN 201510313937 A CN201510313937 A CN 201510313937A CN 104941357 A CN104941357 A CN 104941357A
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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
The invention belongs to exhaust-gas treatment field, relate to a kind of processing method of waste gas, be specifically related to a kind of processing method and treatment facility thereof of industry of artificial boards waste gas.
Background technology
Along with socioeconomic development, air pollution is day by day serious, and work and the living environment of people go from bad to worse, and therefore people are more and more higher for the requirement of living environment quality.At present, protection of the environment has become the common recognition of people, therefore needs the waste gas to industry produces to purify, prevents it to air born pollution.
Present artificial liner enterprise belongs to self-discharging substantially to exhaust emissions, does not control exhaust gas component.In Wood-based Panel Production tail gas, main component is fibre dust, formaldehyde, volatility organic gas material (VOC) and foul smell, and Wood-based Panel Production tail gas is large-minded, dustiness is high, temperature is high, can cause adverse influence to environment.Gas handling techniques in the market, can not process the industrial tail gas with the feature such as large-minded, dustiness is high, temperature is high, organic concentration is low.From external importing technology then because equipment manufacturing cost is high, operating cost is high, avenge again to the industry of artificial boards originally belonging to meagre profit operation and add frost.
Summary of the invention
The present invention seeks to the processing method that a kind of industry of artificial boards waste gas is provided to overcome the deficiencies in the prior art.
For achieving the above object, the technical solution used in the present invention is: a kind of processing method of industry of artificial boards waste gas, and it comprises the following steps:
A () is directly outer after being imported by waste gas in scrubbing tower and carrying out spray process arranges, and collects spray liquid;
B described spray liquid is filtered rear stratification and obtains the first supernatant and the first precipitation by ();
C () carries out reactivation with aeration with removing organic matter wherein of degrading to described first supernatant, then stratification obtains the second supernatant and the second precipitation;
D () collects described first precipitation and described second precipitation, described second supernatant of outer row.
Optimally, in step (a), the pressure of described spray automatically adjusts according to the concentration of dust in described waste gas and particle diameter.
Further, in step (a), described waste gas from bottom to top enters described scrubbing tower, and its flow velocity is 0.5 ~ 10m/s, and the WGR of described spray is 0.5 ~ 2L/m
3.
Further, the size droplet diameter that described spray produces is 5 ~ 50 μm.
Optimally, it also comprises step (e) and is pumped in scrubbing tower by described for part the second supernatant and recycle.
Optimally, in step (c), described reactivation with aeration is through biological contact oxidation pond or BAF process by described first supernatant.
Further, the BOD load of described biological contact oxidation pond is 0.5 ~ 2kg/ (m
3d).
Another object of the present invention is the treatment facility providing a kind of industry of artificial boards waste gas, it comprises wireway, the scrubbing tower that bottom is connected with described wireway, be arranged on the collecting pipe of described scrubbing tower lower end, the Microfilter be connected with described collecting pipe, the first sedimentation basin be connected with described Microfilter, the bio-regeneration pond be connected with described first sedimentation basin, the second sedimentation basin be connected with described bio-regeneration pond, be arranged on described scrubbing tower top and coupled logical blast pipe and be connected for the drainpipe of outer row's supernatant with described second sedimentation basin, described scrubbing tower top is provided with multiple tracks spraying mechanism.
Optimally, it also comprises the centrifugal pump be connected between described second sedimentation basin and described spraying mechanism.
Further, described first sedimentation basin is also connected with concentration basin by the sludge pipe be connected bottom it with described second sedimentation basin.
Because technique scheme is used, the present invention compared with prior art has following advantages: the processing method of industry of artificial boards waste gas of the present invention and treatment facility thereof, there is anti-shock loading strong, the advantage that the cycle of operation is long, cost is low, floor space is little, do not have secondary pollution to produce, efficiently can process the industry of artificial boards waste gas of high dust-laden, high temperature, atm number, low concentration, treatment effect reaches more than 90%; Adopt the waste water after bio-regeneration as circulation fluid, greatly reduce the consumption of water, reduce operating cost; Waste gas is purified, and plant chimney stalk is also recycled, qualified discharge; Solid waste generation is also less, and mud directly can be delivered to heating center and burn, and realizes the recycling economy of resource maximum using; And the fiber-like suspension that can effectively filter out in factory effluent, avoid the blocking of equipment, efficiency of dust collection reaches 90%; Organic substance in factory effluent accounts for 80 ~ 90%, can provide enough carbon sources, make device really realize Unmanned operation for growth of microorganism; Adopt the limit value that satisfied " discharge standard of air pollutants " GB16297-1996 of the emission gases after process of the present invention specifies, the outer pollution discharging thing amount to environment can be greatly reduced every year, there is obvious environmental benefit, and greatly reduce the impact on surrounding enviroment such as foul smell; Change the technique of carrying out spray-absorption with simple water or activated sludge, spray with the circulation fluid being rich in Extracellular polymers, substantially increase the removal effect of circulation fluid to organic gas such as VOC, and avoid microorganism and directly contact with high-temperature gas, can the activity of microorganism in guarantee equipment to greatest extent, improve the regeneration efficiency of circulation fluid.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of industry of artificial boards waste gas treatment equipment of the present invention;
Wherein, 1, wireway; 2, scrubbing tower; 3, collecting pipe; 4, Microfilter; 5, the first sedimentation basin; 6, bio-regeneration pond; 7, the second sedimentation basin; 8, centrifugal pump; 9, spraying mechanism; 10, drainpipe; 11, blast pipe; 12, sludge pipe; 13, concentration basin.
Detailed description of the invention
Below in conjunction with accompanying drawing, the preferred embodiment of the invention is described in detail:
Embodiment 1
The present embodiment provides a kind of processing method of industry of artificial boards waste gas, comprises the following steps:
A () is directly outer after being imported by waste gas in scrubbing tower and carrying out spray process arranges, and collects spray liquid;
B described spray liquid is filtered rear stratification and obtains the first supernatant and the first precipitation by ();
C () carries out reactivation with aeration with removing organic matter wherein of degrading to described first supernatant, then stratification obtains the second supernatant and the second precipitation;
D () collects described first precipitation and described second precipitation, described second supernatant of outer row;
E described for part the second supernatant pumps in scrubbing tower and recycles by (), change the technique of carrying out spray-absorption with simple water or activated sludge, spray with the circulation fluid being rich in Extracellular polymers, substantially increase the removal effect of circulation fluid to organic gas such as VOC, and avoid microorganism and directly contact with high-temperature gas, can the activity of microorganism in guarantee equipment to greatest extent, improve the regeneration efficiency of circulation fluid; And greatly reduce the consumption of water, reduce operating cost.
In the present embodiment, in step (a), the pressure of described spray automatically adjusts according to the concentration of dust in described waste gas and particle diameter; Described waste gas from bottom to top enters described scrubbing tower, and its flow velocity is preferably 0.5 ~ 10m/s, and the WGR of described spray is preferably 0.5 ~ 2L/m
3; The size droplet diameter that spray produces is preferably 5 ~ 50 μm.In step (c), described reactivation with aeration is that the BOD load of described biological contact oxidation pond is 0.5 ~ 2kg/ (m by described first supernatant through biological contact oxidation pond or BAF process
3d).Adopt the limit value that satisfied " discharge standard of air pollutants " GB16297-1996 of the waste water in the present embodiment after method process specifies, the outer pollution discharging thing amount to environment can be greatly reduced every year, there is obvious environmental benefit, and greatly reduce the impact on surrounding enviroment such as foul smell; Waste gas is purified, and solid waste generation is also less, and mud directly can be delivered to heating center and burn, and realizes the recycling economy of resource maximum using.
Embodiment 2
As shown in Figure 1, the present embodiment provides a kind for the treatment of facility of industry of artificial boards waste gas, mainly comprises the parts such as wireway 1, scrubbing tower 2, collecting pipe 3, Microfilter 4, first sedimentation basin 5, bio-regeneration pond 6 and the second sedimentation basin 7.
Wherein, the bottom of scrubbing tower 2 is connected with wireway 1, can install dust inductor in scrubbing tower 2, for measuring concentration and the particle diameter of dust.Collecting pipe 3 is arranged on the lower end of scrubbing tower 2, for collecting the spray liquid of ejection in scrubbing tower 2.Microfilter 4 is connected with collecting pipe 3, for crossing the most suspended substances filtered in spray liquid.First sedimentation basin 5 is connected with Microfilter 4, to remove remaining suspension in spray liquid after precipitation.Bio-regeneration pond 6 is connected with the first sedimentation basin 5, thus the organic matter etc. in spray liquid is carried out degraded removal.Second sedimentation basin 7 is connected with bio-regeneration pond 6, again staticly settles.Blast pipe 11 is arranged on the top of scrubbing tower 2, and is connected with scrubbing tower 2.Drainpipe 10 is connected with the second sedimentation basin 7, arranges outward for the supernatant produced by the second sedimentation basin 7.Spraying mechanism 9 has multiple tracks (in the present embodiment, preferably in the vertical direction of scrubbing tower 2, interval arranges 3-6 road), its power section can be connected with dust inductor by control module, like this can according to the dust concentration of dust inductor induction and particle diameter, automation regulates the Power output of spraying mechanism 9, thus regulate the pressure of spray, make the water sprayed in atomization in various degree, to obtain best removal effect.
In the present embodiment, the treatment facility of industry of artificial boards waste gas also comprises the centrifugal pump 8 be connected between the second sedimentation basin 7 and spraying mechanism 9, thus recycles part second supernatant.First sedimentation basin 5 is also connected with concentration basin 13 by the sludge pipe 12 be connected bottom it with the second sedimentation basin 7, and mud directly can be delivered to heating center and burn, and realizes the recycling economy of resource maximum using.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and implement according to this; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed within protection scope of the present invention.
Claims (10)
1. a processing method for industry of artificial boards waste gas, is characterized in that, it comprises the following steps:
A () is directly outer after being imported by waste gas in scrubbing tower and carrying out spray process arranges, and collects spray liquid;
B described spray liquid is filtered rear stratification and obtains the first supernatant and the first precipitation by ();
C () carries out reactivation with aeration with removing organic matter wherein of degrading to described first supernatant, then stratification obtains the second supernatant and the second precipitation;
D () collects described first precipitation and described second precipitation, described second supernatant of outer row.
2. the processing method of industry of artificial boards waste gas according to claim 1, is characterized in that: in step (a), and the pressure of described spray automatically adjusts according to the concentration of dust in described waste gas and particle diameter.
3. the processing method of industry of artificial boards waste gas according to claim 2, is characterized in that: in step (a), and described waste gas from bottom to top enters described scrubbing tower, and its flow velocity is 0.5 ~ 10m/s, and the WGR of described spray is 0.5 ~ 2L/m
3.
4. the processing method of industry of artificial boards waste gas according to claim 2, is characterized in that: the size droplet diameter that described spray produces is 5 ~ 50 μm.
5. the processing method of industry of artificial boards waste gas according to claim 1, is characterized in that: it also comprises step (e) and is pumped in scrubbing tower by described for part the second supernatant and recycle.
6. the processing method of industry of artificial boards waste gas according to claim 1, is characterized in that: in step (c), and described reactivation with aeration is through biological contact oxidation pond or BAF process by described first supernatant.
7. the processing method of industry of artificial boards waste gas according to claim 6, is characterized in that: the BOD load of described biological contact oxidation pond is 0.5 ~ 2kg/ (m
3d).
8. the treatment facility of an industry of artificial boards waste gas, it is characterized in that: it comprises wireway (1), the scrubbing tower (2) that bottom is connected with described wireway (1), be arranged on the collecting pipe (3) of described scrubbing tower (2) lower end, the Microfilter (4) be connected with described collecting pipe (3), the first sedimentation basin (5) be connected with described Microfilter (4), the bio-regeneration pond (6) be connected with described first sedimentation basin (5), the second sedimentation basin (7) be connected with described bio-regeneration pond (6), be arranged on described scrubbing tower (2) top and coupled logical blast pipe (11) and be connected for the drainpipe (10) of outer row's supernatant with described second sedimentation basin (7), described scrubbing tower (2) top is provided with multiple tracks spraying mechanism (9).
9. the treatment facility of industry of artificial boards waste gas according to claim 8, is characterized in that: it also comprises the centrifugal pump (8) be connected between described second sedimentation basin (7) and described spraying mechanism (9).
10. the treatment facility of industry of artificial boards waste gas according to claim 8 or claim 9, is characterized in that: described first sedimentation basin (5) is also connected with concentration basin (13) by the sludge pipe (12) be connected bottom it with described second sedimentation basin (7).
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771494A (en) * | 2016-04-20 | 2016-07-20 | 江苏大学 | Water circulation automatic dust removal method and device for artificial board production |
| CN107441886A (en) * | 2017-08-11 | 2017-12-08 | 苏州坎泽环保工程有限公司 | A kind of water-gas combined processing system of organic exhaust gas spray-absorption |
| CN108355444A (en) * | 2018-03-20 | 2018-08-03 | 苏州市协力环保设备有限公司 | A kind of industry of artificial boards drying exhaust gas treating method and its processing equipment |
| CN110252059A (en) * | 2019-06-14 | 2019-09-20 | 苏州市协力环保设备有限公司 | Fiberboard dry waste gas processing system and fiberboard dry waste gas treatment process |
| CN112206656A (en) * | 2020-09-30 | 2021-01-12 | 金时发工业(惠州)有限公司 | VOC waste gas treatment process |
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| RU2482902C1 (en) * | 2012-02-24 | 2013-05-27 | Олег Савельевич Кочетов | Venturi scrubber |
| CN203777856U (en) * | 2014-03-21 | 2014-08-20 | 湖北吾尔利生物工程有限责任公司 | Smoke dust recycling and purifying device for coal fired boilers |
| CN203946996U (en) * | 2014-05-30 | 2014-11-19 | 珠海市一致电工有限公司 | Enameled wire spray waste water purifying treatment system |
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| RU2482902C1 (en) * | 2012-02-24 | 2013-05-27 | Олег Савельевич Кочетов | Venturi scrubber |
| CN203777856U (en) * | 2014-03-21 | 2014-08-20 | 湖北吾尔利生物工程有限责任公司 | Smoke dust recycling and purifying device for coal fired boilers |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105771494A (en) * | 2016-04-20 | 2016-07-20 | 江苏大学 | Water circulation automatic dust removal method and device for artificial board production |
| CN107441886A (en) * | 2017-08-11 | 2017-12-08 | 苏州坎泽环保工程有限公司 | A kind of water-gas combined processing system of organic exhaust gas spray-absorption |
| CN108355444A (en) * | 2018-03-20 | 2018-08-03 | 苏州市协力环保设备有限公司 | A kind of industry of artificial boards drying exhaust gas treating method and its processing equipment |
| CN110252059A (en) * | 2019-06-14 | 2019-09-20 | 苏州市协力环保设备有限公司 | Fiberboard dry waste gas processing system and fiberboard dry waste gas treatment process |
| CN110252059B (en) * | 2019-06-14 | 2021-08-27 | 苏州市协力环保设备有限公司 | Fiberboard drying waste gas treatment system and fiberboard drying waste gas treatment process |
| CN112206656A (en) * | 2020-09-30 | 2021-01-12 | 金时发工业(惠州)有限公司 | VOC waste gas treatment process |
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| CN104941357B (en) | 2017-01-25 |
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