CN108404619A - Except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process - Google Patents
Except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process Download PDFInfo
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/52—Hydrogen sulfide
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2257/00—Components to be removed
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- B01D2257/708—Volatile organic compounds V.O.C.'s
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Abstract
Except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process belong to biological deodorizing field.Device includes sequentially connected two-stage series connection reactor：First order acid reaction device and second level neutral reaction device；Reactor includes cylinder, air inlet, exhaust outlet, water circulation system, permeable load-bearing flase floor, and filler is equipped on flase floor and is grown for microorganism, bottom is equipped with drainpipe；First stage reactor reduces pH in reactor in the case where the product of microbial degradation hydrogen sulfide gas has acidic materials, by the water of cycle, cultivates acidophilic microorganism, mainly removes hydrogen sulfide gas；Second stage reactor is neutral reaction device, and culture adapts to the microorganism of neutral gas, mainly removes volatile organic matter (VOC).For the system by different pH by microorganism classification, acidophilic microorganism removes sour gas, adapts to neutral microorganism and removes neutral gas, reaches separation different microorganisms population effect, is finally reached the high efficiency processing for mixing foul gas.
Description
Technical field
The present invention relates to biological deodorizing fields, and in particular to a kind of two-stage reactor series connection processing sulfide hydrogen and volatilizable
The deodoration system of property organic matter mixed gas.
Background technology
Foul gas is a big public hazards in the world, wherein containing hydrogen sulfide, volatile organic matter (VOC) etc., especially
It is derived from the foul gas such as sewage treatment plant, destructor plant, farm, hydrogen sulfide, volatile organic matter (VOC)
Threshold value is low, big on the harm of the health of staff, big on the life of nearby residents influence.Even, in long-term stench ring
In border, easily causes nervous centralis and generate obstacle, lesion, cause chronic disease, influence the health of the mankind.
In field of deodorization, it is generally divided into three kinds of physics, chemistry, biological treatment modes.Physical method includes absorption method, dilution
Method, masking method etc., chemical method include combustion method, Production by Catalytic Combustion Process, energetic ion method etc., but the processing cost of these methods compared with
Height, and be possible to generate secondary pollution, dangerous property has the practical application of factory more limitation.In recent years, biological
Deodorization becomes removal stench method more conventional in scientific research, engineering.Biological odor removal method includes soil treatment method, biological tower (drop filter
Tower, biological filtration tower) etc..
But in the foul gas of factories such as current sewage treatment plant, destructor plant, sulfureted hydrogen gas concentration is higher.Vulcanization
Toxicity, the acidity of hydrogen are unfavorable for the growth of microorganism very much, and handle the microorganism of other VOC, it is virtually impossible to be present in pH and be less than 5
Extreme environment in.It is sent out in this way, adapting to being separated into for the Deodor microorganism of varying environment in order to limit biological deodorizing technology
The important topic of exhibition.
Thus, problem to be solved is exactly at this stage：A kind of reliable measure how is developed, sulphur can be effectively avoided
The toxicity and acidity for changing hydrogen solve the problems, such as that different Deodor microorganisms need different living environments.
Invention content
The problem to be solved in the present invention is to provide a kind of reliable processing system, for sewage treatment plant, landfill leachate
A large amount of mixing foul gas containing hydrogen sulfide and volatile organic matter of the generations such as treatment plant, can efficiently separate mixing
The heterogeneity of gas makes hydrogen sulfide be accommodated neutral microorganism by acidophilic microorganism processing, volatile organic matter (VOC)
Processing, to achieve the purpose that efficient process sulfide hydrogen and volatile organic matter mixed gas.
To solve the above-mentioned problems, the present invention provides a kind of concatenated biological deodorizing technologies of two-part.By making vulcanization
The side that hydrogen degrades in first order acid reaction device, volatile organic matter (VOC) is made to degrade in the neutral reaction device of the second level
Method, the microorganism of the different pH environment of culture adaptation, final to realize for sulfide hydrogen and volatile in different reactors
The efficient removal of organic matter mixed gas.
The technical solution that the present invention takes is --- remove sulfide hydrogen and volatile organic matter mixed gas two-stage reaction
Device tandem process, including：
Acid reaction device (21), including acid reaction device ontology and the first gas outlet for being designed successively from top to bottom
(3), the first sprinkling water inlet (4), acidophiles filler (5), the first load-bearing flase floor (6), the first air inlet (7), first go out
Water management liquid level system (8), first circulation water pump (9), the first bucket (10), the microbial nutrient solution that addition in every 7 days is 1 time
(11)。
Neutral reaction device (22), including neutral reaction device ontology and the second gas outlet for being designed successively from top to bottom
(11), the second sprinkling water inlet (12), neutrophilous organism filler (13), the second load-bearing flase floor (14), the second air inlet (15), the
Two go out water management liquid level system (16), second circulation water pump (17), the second bucket (18), the microbial nutrition that addition in every 7 days is 1 time
Liquid (19), alkaline buffer (20).
The two-stage reactor, generating acidic materials by acidophilic microorganism degradation hydrogen sulfide reduces acid reaction device
(21) the pH ＜ 4 in, to ensure the domestication of removal hydrogen sulfide microorganism and increase；The pH=6-8 of neutral reaction device (22), if having
When pH ＜ 6, pH so far ranges should be adjusted in alkaline buffer (20) to the second bucket (18) by adding, to ensure that removal can wave
The domestication and growth of hair property organic matter microorganism.
Water in the acid reaction device (21) is to recycle, the acidity that hydrogen sulfide of constantly being degraded by microorganism generates
Substance (such as sulfuric acid, sulfurous acid etc.) reduces the pH of water, acidophilic microorganism on acidophilic microorganism filler (5) in cultivation reactor
Growth.It may inhibit degradation process when catabolite is excessive, need to change water at this time, this date is set as 4-10 days.
Water in the neutral reaction device (22) is to recycle, by keeping neutral environment culture to adapt to neutral environment
The growth of microorganism, to ensure the degradation capability of removal volatile organic matter (VOC).As the interior pH ＜ 6 of the second bucket (18),
It adds alkaline buffer (20) and keeps pH=6-8.It may inhibit degradation process when catabolite is excessive, need to change use at this time
Water, this date are set as 4-10 days.
Acid reaction device (21) gas by the first air inlet (7) lower part air inlet, pass through the first gas outlet (3) top
Outlet goes out the gas-liquid of water management liquid level system (8) lower part water outlet by first sprinkling water inlet (4) top water inlet, by first
The operational mode of adverse current up and down.The neutral reaction device (22) by the second air inlet (15) lower part air inlet, pass through the second outlet
Mouth (11) top outlet goes out by second sprinkling water inlet (12) top water inlet, by second under water management liquid level system (16)
The operational mode of the gas-liquid adverse current up and down of portion's water outlet.
The second air inlet (15) phase of the first gas outlet (3) of the acid reaction device (21) and neutral reaction device (22)
It is connected to, the hydrogen sulfide in mixed gas removes in acid reaction device (21), volatile organic matter (VOC) is in neutral reaction device
(22) removal in.
Described two reactors ensure the equal of liquid comprising the first sprinkling water inlet (4), the second sprinkling water inlet (12)
Even distribution.
It is downward that the first air inlet (7), the second air inlet (15) of described two reactors are both designed as mouth, passes through reactor
Lower portion and liquid level ensure uniform air distribution.
The first of described two reactors goes out water management liquid level system (8), second goes out water management liquid level system (16) and pass through
The height of pipeline is adjusted to adjust the liquid level in reactor bottom position, ensures that reactor bottom has liquid level to seal water outlet
To prevent gas escape, and can be at the uniform velocity water outlet.
Technical scheme of the present invention has the following advantages that：
1. the two-stage series connection reactor of the present invention can first remove hydrogen sulfide in first order acid reaction device, its poison is avoided
Property and the acid growth for influencing other degrading microorganisms in the neutral reaction device of the second level.
2. the sprinkling water inlet, the downward design of air inlet in two reactors of the present invention can ensure that liquid uniformly sprays
It spills, uniform air distribution.
3. the water management liquid level system that goes out in two reactors of the present invention can be by adjusting highly controlling lower portion
Liquid level, gas leakage is avoided to seal water outlet with this, and water can at the uniform velocity be discharged, ensures the continuous cycle of liquid.
Description of the drawings
Illustrate technical scheme of the present invention in order to clearer, will be simple Jie to the attached drawing of specific embodiment below
It continues.For those skilled in the art, without creative efforts, it can also obtain according to these attached drawings
Obtain similar attached drawing.
Fig. 1 is the structure that the present invention removes sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process
Schematic diagram.
Wherein, reference numeral is：
1- air pumps, 2- gas flowmeters, the first gas outlets 3-, 4- first spray water inlet, 5- acidophilic microorganism fillers, 6-
First load-bearing flase floor, the first air inlets of 7-, 8- first go out water management liquid level system, 9- first circulation water pumps, the first water of 10-
Bucket, the second gas outlets 11-, 12- second spray water inlet, 13- neutrality microbe stuffings, 14- the second load-bearing flase floors, 15- the
Two air inlets, 16- second go out water management liquid level system, 17- second circulation water pumps, the second buckets of 18-, 19- microbial nutrient solutions,
20- alkaline buffers, 21- acid reaction devices, 22- neutral reaction devices.
Specific implementation mode
It is as shown in Figure 1 to remove sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process, including：
Air intake pump (1), gas flowmeter (2), the first gas outlet (3), the first sprinkling water inlet (4), acidophilic microorganism filler (5), the
One load-bearing flase floor (6), the first air inlet (7), first go out water management liquid level system (8), first circulation water pump (9), the first water
Bucket (10), the second gas outlet (11), the second sprinkling water inlet (12), neutral microbe stuffing (13), the second load-bearing flase floor
(14), the second air inlet (15), second go out water management liquid level system (16), second circulation water pump (17), the second bucket (18), micro-
Biological nutrient liquid (19), alkaline buffer (20), and it is micro- comprising the first gas outlet (3), the first sprinkling water inlet (4), acidophilus
Biologic packing material (5), the first load-bearing flase floor (6), the first air inlet (7), first go out water management liquid level system (8), first circulation
Water pump (9), the first bucket (10) acid reactor (21) and comprising the second gas outlet (11), second sprinkling water inlet (12),
Neutral microbe stuffing (13), the second load-bearing flase floor (14), the second air inlet (15), second go out water management liquid level system
(16), the neutral reaction device (22) of second circulation water pump (17), the second bucket (18)；The acid reaction device (21), neutrality are anti-
It is the adverse current operational mode up and down being discharged by lower part air inlet, top outlet, top water inlet, lower part to answer device (22)；Described two
Stage reactor series operation, air inlet are introduced into acid reaction device (21), enter neutral reaction device (22) later, final to be discharged；Institute
Acid reaction device (21), neutral reaction device (22) 1 microbial nutrient solution (19) of addition in every 4-10 days are stated, ensure microorganism has
Sufficient growth elements are for growth；PH of the neutral reaction device (22) in the second bucket (18) adds alkaline buffer when being less than 6
Liquid (20).
The acid reaction device (21) sets gradually the first gas outlet (3), the first sprinkling water inlet from the top to the bottom
(4), acidophilic microorganism filler (5), the first load-bearing flase floor (6), the first air inlet (7), first go out water management liquid level system
(8), first circulation water pump (9), the first bucket (10).Water in first bucket (10) is beaten again by first circulation water pump (9)
Enter the first sprinkling water inlet (4), realizes the recycling of water.It may inhibit degradation process when catabolite is excessive, need at this time
Water is replaced, this date is set as 4-10 days.For acid reaction device (21), the water in the first bucket (10) is because of microorganism
Degradation hydrogen sulfide and generate acidic materials, cause the reduction of pH, acid solution to recycle while absorbing hydrogen sulfide, be also acid
Acidophilic microorganism in property reactor provides living environment.For neutral reaction device (22), in the second bucket (18)
Water is ordinary tap water, and when pH is less than 6, addition alkaline buffer (22) adjusts pH=6-8, is the adaptation in neutral reaction device
Neutral microorganism provides living environment.
The acid reaction device (21) is to go out by the first air inlet (7) lower part air inlet, by the first gas outlet (3) top
Gas goes out by first sprinkling water inlet (4) top water inlet, by first in the gas-liquid of water management liquid level system (8) lower part water outlet
The operational mode of lower adverse current；Neutral reaction device (22) by the second air inlet (15) lower part air inlet, pass through the second gas outlet (11)
Top outlet by second sprinkling water inlet (12) top water inlet, goes out the water outlet of water management liquid level system (16) lower part by second
Gas-liquid adverse current up and down operational mode.
The reactor assembly, the gas of sulfide hydrogen/sulfur-bearing volatile organic matter is by air intake pump (1), from acidity
The first air inlet (7) of reactor (21) enters, by being again introduced into neutral reaction device (22) after the first gas outlet (3) outlet
Second air inlet (15) is handled, and is discharged by the second gas outlet (11) of neutral reaction device (22), for after final process
Gas.
The acid reaction device (21), the first air inlet (7) of neutral reaction device (22), the second air inlet (15) are entering
After reactor, direction ensures uniform air distribution obliquely, using reactor bottom taper position and liquid level.
The acid reaction device (21), neutral reaction device (22) first go out water management liquid level system (8), second go out water control
Liquid level system (15) processed by the height of a segment pipe, adjusts the liquid level at reactor bottom taper position, protects after water outlet
Card liquid can at the uniform velocity flow out, and can form liquid level at taper position and seal outlet.
The EBRT of the reactor, acid reaction device (21) is 20-120 seconds, mainly removes hydrogen sulfide, the first gas outlet
(3) concentration of hydrogen sulfide is less than 10mg/m3；The EBRT of neutral reaction device (22) is 40-240 seconds, mainly removes VOC, second goes out
The VOC concentration of gas port (11) is below 5mg/m3。
The present invention's is worked except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process
Journey generally, needs the mixed gas for carrying out deodorization, by air pump (1) intake line, by the control of gas flowmeter (2), into
The first air inlet (7) for entering acid reaction device (21), under downward intake method, gas can uniform cloth entire reactor cross
It is uniform upward in section, by the first load-bearing flase floor (6), into reaction zone.It is acidophiles filler (5) in reaction zone,
Hydrogen sulfide is degraded to the innocuous substances such as sulfuric acid, sulfurous acid and is stored in liquid by acidophilic microorganism here, flows into lower end toper
It is interior into the first bucket (10) to go out water management liquid level system (8) by first for position.Remainder in gas after removal hydrogen sulfide
It is divided into volatile organic matter (VOC), neutral reaction device (22) is entered by the first gas outlet (3), by the second air inlet
(15) enter neutral reaction device, the processing of the neutral microbe stuffing (13) by adapting to neutral environment, volatile organic matter
(VOC) it is degraded, the harmless components for becoming Microorganism or being converted into liquid phase eventually enter into the second bucket (18).Two
In a reactor, liquid is to recycle, by the first water pump (9), the second water pump (17) respectively from the first bucket (10),
It is drawn into the first sprinkling water inlet (4), the second sprinkling water inlet (12) in two buckets (18), it is transversal to be evenly distributed in reactor
The conversion of " gas-liquid phase ", and the degradation of " liquid phase-microbial " occur for the gas on face, and from bottom to up.When degradation rate is low
When 90%, the water in the first bucket (10), the second bucket (18) should be replaced.Every 7 days configuration microbial nutrient solutions (19), add
Enter in the first bucket (10) and the second bucket (18).When the pH in the second bucket (18) is reduced to 6 or less, it is slow that alkalinity need to be added
Fliud flushing (20) ensures pH=6-8.
Obviously, examples detailed above is only intended to clearly illustrate done citing, and does not limit the embodiments.For
For technical staff in fields, other various forms of variations or change can also be made on the basis of the above description
It is dynamic.There is no necessity and possibility to exhaust all the enbodiments.And the obvious variation or change thus amplified out
It moves within still in protection scope of the present invention.
Claims (4)
1. remove sulfide hydrogen and volatile organic matter mixed gas two-stage reactor tandem process, which is characterized in that including into
Air pump (1), gas flowmeter (2), the first gas outlet (3), the first sprinkling water inlet (4), acidophilic microorganism filler (5), first
Load-bearing flase floor (6), the first air inlet (7), first go out water management liquid level system (8), first circulation water pump (9), the first bucket
(10), the second gas outlet (11), the second sprinkling water inlet (12), neutral microbe stuffing (13), the second load-bearing flase floor (14),
Second air inlet (15), second go out water management liquid level system (16), second circulation water pump (17), the second bucket (18), microorganism
Nutrient solution (19), alkaline buffer (20), and include the first gas outlet (3), the first sprinkling water inlet (4), acidophilic microorganism
Filler (5), the first load-bearing flase floor (6), the first air inlet (7), first go out water management liquid level system (8), first circulation water pump
(9), the acid reactor (21) of the first bucket (10) and include the second gas outlet (11), the second sprinkling water inlet (12), neutral
Microbe stuffing (13), the second load-bearing flase floor (14), the second air inlet (15), second go out water management liquid level system (16),
The neutral reaction device (22) of two-cycle pump (17), the second bucket (18)；The two-stage reactor series operation, air inlet are introduced into
Acid reaction device (21) enters neutral reaction device (22) later, final to be discharged；The acid reaction device (21), neutral reaction device
(22) in addition microbial nutrient solution (19) to the first bucket (10) and the second bucket (18)；PH ＜ in second bucket (18)
When 6, alkaline buffer (20) is added.
The elemental composition of microbial nutrient solution (19) and the element are wanted in the first bucket (10) and the second bucket (18) interior concentration
It asks ranging from：N,10-3-10-1mol/L；K,10-4-10-2mol/L；P,10-4-10-2mol/L；Mg,10-4-10-2mol/L；Ca,
10-4-10-2mol/L；Fe,10-4-10-2Mol/L, if when less than this value range, element should be kept in this model by adding medicament
It encloses.
2. according to claim 1 except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor series connection work
Skill, which is characterized in that the first bucket (10) interior water circulation use of acid reaction device (21) produces after microbial degradation hydrogen sulfide
Raw acidic materials, water body maintain the acidic environment of pH ＜ 4, and favorable environment is provided for growth, the degradation of acidophilic microorganism；It is neutral
The second bucket (18) interior water circulation use of reactor (22) keeps the interior water body of the second bucket (18) to maintain the neutrality of pH=6-8
Environment, as water body pH ＜ 6, addition alkaline buffer (20) adjusts pH=6-8, to adapt to growth, the drop of neutral microorganism
Solution provides advantage.
3. according to claim 1 except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor series connection work
Skill, which is characterized in that the mixed gas of sulfide hydrogen and volatile organic matter is by air intake pump (1), from acid reaction device
(21) the first air inlet (7) enters, by be again introduced into after the first gas outlet (3) outlet the second of neutral reaction device (22) into
Gas port (15) is handled, and is discharged by the second gas outlet (11), is the gas after final process.
4. according to claim 1 except sulfide hydrogen and volatile organic matter mixed gas two-stage reactor series connection work
Skill, which is characterized in that including：
By the mixed gas containing hydrogen sulfide and volatile organic matter by being passed through after air intake pump (1) and gas flow meter (2)
In first air inlet (7)；The accumulation for containing acidic materials by the product after acidophilic microorganism filler degradation hydrogen sulfide, reduces acid
Property reactor (21) in pH ＜ 4, ensure the domestication and growth of the removal hydrogen sulfide microorganism of acidophilus；Neutral reaction device (22)
PH=6-8, if when pH ＜ 6, so far range should be adjusted in alkaline buffer (20) to the second bucket (18) by adding, to ensure
Adapt to the domestication and growth of neutral removal volatile organic matter microorganism；As a concentration of H of outlet of the first gas outlet (3)2S
＜ 10mg/m3, a concentration of H of outlet of the second gas outlet (11)2S ＜ 10mg/m3, VOC ＜ 5mg/m3When, indicate the micro- life of acidophilus
Object, the domestication for adapting to neutral microorganism are completed.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111111425A (en) * | 2020-01-10 | 2020-05-08 | 北京建筑大学 | Multi-reaction-section combined odor treatment device and treatment method |
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