CN208340431U - Zinc cation desulfurizer - Google Patents
Zinc cation desulfurizer Download PDFInfo
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- CN208340431U CN208340431U CN201820361102.XU CN201820361102U CN208340431U CN 208340431 U CN208340431 U CN 208340431U CN 201820361102 U CN201820361102 U CN 201820361102U CN 208340431 U CN208340431 U CN 208340431U
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Abstract
一种生物洗涤脱硫装置，包括气体洗涤塔、生物氧化反应器、沉淀池、厌氧反应器、调节池等。含H2S气体从进气口进入到气体洗涤塔，中性或弱碱性的吸收液通过喷淋头均匀喷洒在填料层，气体向上通过填料层时与吸收液逆流接触，其中的H2S溶解于吸收液。吸收液从洗涤塔下部出液口泵入生物氧化反应器，吸收液中的S2‑在嗜酸性脱硫菌的作用下部分被氧化为单质硫，部分被氧化为SO4 2‑，使得pH范围稳定在2‑3.5之间。氧化后的液体溢流进入沉淀池，大部分单质硫沉淀到池底排出，并进行回收。上清液经过滤后进入厌氧反应装置，部分SO4 2‑在硫酸盐还原菌的作用下被还原为S2‑。
A biological scrubbing desulfurization device includes a gas scrubbing tower, a biological oxidation reactor, a sedimentation tank, an anaerobic reactor, a conditioning tank, and the like. The gas containing H 2 S enters the gas scrubbing tower from the air inlet, and the neutral or weakly alkaline absorbing liquid is evenly sprayed on the packing layer through the spray head. S dissolves in the absorption solution. The absorption liquid is pumped into the biological oxidation reactor from the liquid outlet at the lower part of the washing tower, and the S 2- in the absorption liquid is partially oxidized to elemental sulfur under the action of acidophilic desulfurization bacteria, and part is oxidized to SO 4 2- , so that the pH range Stable between 2‑3.5. The oxidized liquid overflows into the sedimentation tank, and most of the elemental sulfur is precipitated to the bottom of the tank to be discharged and recovered. The supernatant liquid enters the anaerobic reaction device after being filtered, and part of SO 4 2- is reduced to S 2- under the action of sulfate-reducing bacteria.
Description
Technical field
The utility model relates to the processing systems more particularly to a kind of zinc cation desulfurization of hydrogen sulfide in a kind of removal gas
Device.
Background technique
H2S is impurity common in natural gas and biogas.China's sulfur-containing gas rich reserves, hydrogen sulfide content are greater than
1% gas reserves accounts for a quarter of national gas reserves.H in biogas2S, which is derived from, contains prot th, such as half Guang
Propylhomoserin and methionine are especially rich in the raw material, such as vinasse, macro and paper-making industrial waste water etc. of sulphur.In landfill gas
H2S is also possible to from gypsum.H2S and water phase meet and get along well to form sulfuric acid, corrode biogas and gas utilization equipment.Contain H2The gas of S
Volumetric combustion can generate sulfuric acid discharge, and H2S inherently has high toxicity, can generate very serious health risk.Gas sweetening
Method it is very much, biology, chemically and physically doctor treatment can be divided into according to its principle.Chemical desulfurization method mainly include chemical oxidation and
Alkali absorption is needed using a large amount of chemical agent, and there are operating cost height, are also easy to produce secondary pollution problems.Physical desulfurization side
Method includes solvent absorption and active carbon adsorption, it is also desirable to chemical agent is regularly replaced, it is general only to need special low-sulfur
It is used when hydrogen concentration.Biological desulfurization is to utilize sulfur bacteria by H2S is oxidized to the process of elemental sulfur or sulfuric acid.With physical method,
Chemical method is compared, biological desulfurizing technology have mild condition, easy to operate, maintenance cost and low energy consumption, clean and environmental protection, product can
The advantages that recycling, gradually has vast potential for future development at one of mainstream technology of gas sweetening.
The Chinese patent literature of the patent No. 200710067269.1, entitled " methane bio-desulfurization device " discloses one kind
Bio-desulfurization device, the device are the desulfurizing towers with biogas import and methane outlet, if placing filler stem in desulfurizing tower, are filled out
Material top is equipped with nozzle, and nozzle is connected to the delivery pipe with reflux pump, and another nozzle of delivery pipe is located at the battalion of desulfurizing tower lower part
Nutrient solution section, tower bottom are equipped with discharge outlet.This sulfur removal technology production and easy to operate, desulfurization effect is preferable, but existing master
Wanting problem is that process is difficult to control, and is easy to happen packed tower blocking.Technique final product is the dilute sulfuric acid that a large amount of concentration are about 0.5%,
Secondary pollution is generated, subsequent dilute acid pretreatment need to be done.And oxygen can be introduced in the process, there are security risks, and it is even more impossible to meet
Methane purification does requirement of the bio-natural gas to GAS QUALITY.
Patent No. CN97180128.2 entitled " method of gas sweetening " discloses one kind and removes hydrogen sulfide from air-flow
Method.The patent No. 201310012017.4, entitled " a kind of two-part methane bio-desulfurization device " disclose two sections a kind of
Formula methane bio-desulfurization device.In two patents, H2S absorbs and biological oxidation is completed in two reactors respectively, absorbs
The problem of liquid moves in circles, regenerates, and very good solution elemental sulfur blocking packing layer, product gas are mixed into excessive oxygen.H2The height of S
Effect, which absorbs, needs weakly alkaline absorbing liquid, and to guarantee that the pH of absorbing liquid is in alkalescent state, two patents are all using neutral de-
Sulphur bacterium, the pH of biooxidation reactions system are also at neutral or alkalescent state.Patent 201310012017.4 is absorbing liquid
Dissolved oxygen control in a certain range, the formation of sulfate in oxidation trough is avoided, so that the pH in oxidation trough is also at alkaline model
It encloses.Patent CN97180128.2 is the acidification for preventing medium in oxidation reactor, is neutralized using sodium hydroxide or sodium carbonate,
So that oxidation reactor is in neutral or alkalescent state.
Utility model content
The utility model is using acidophilia desulfurization bacterium in acid condition to H2S carries out biological oxidation, greatly improves
The operating load of biological oxidation process.
To solve in two-part bio-desulfurization device operational process, scrubbing tower operation needs neutral or weakly alkaline environment, and
Biooxidation reactions need the contradiction between acidic environment, and the utility model takes following technical scheme: a kind of zinc cation
Desulfurizer, it includes the scrubbing tower for removing hydrogen sulfide, biooxidation reactions device, sedimentation basin, anaerobic reactor and conditioning tank.?
Demister, spray head, packing layer and gas distribution pipe, wash tower bottoms and biooxidation reactions are successively arranged in scrubbing tower from top to bottom
The top of device is connected by elevator pump and pipeline；Being connected by pipeline with sedimentation basin at the top of biooxidation reactions device makes to absorb
Hydrorrhea stream enters sedimentation basin；Dissolved oxygen electrode and oxidation-reduction electrode are equipped in biooxidation reactions device.The sedimentation basin is closed
Container, lower part are divided into tapered structure, and bottom sets material outlet.Top is divided into two parts, partition left side by the partition of vertical arrangement
It is provided with liquid-inlet, is provided with overflow port on the right side of partition.Pass through elevator pump and pipe with anaerobic reactor bottom at the top of sedimentation basin
Road is connected；
Anaerobic reactor top is connected with conditioning tank top by pipeline, and anaerobic reactor water outlet overflow enters adjusting
Pond；Bottom of pond portion is adjusted to be connected by elevator pump and pipeline with the spray head on scrubbing tower top；Online pH electricity is equipped in conditioning tank
Pole and online conductivity electrode.It is provided in scrubbing tower lower part containing H2S gas feed, is provided with H at the top of anaerobic reactor2S gas
Body outlet, H2S gas vent with contain H2S gas feed is connected by pipeline.Containing H2S gas feed extend in scrubbing tower with
Gas distribution pipe connection.
By above-mentioned apparatus, H in gas is removed2The technique of S gas is specific as follows:
(1) H2The S absorption stage: gas is by containing H2S gas feed enters from wash tower bottoms, at the top of the scrubbing tower into
The absorbing liquid counter current contacting entered, H2S is absorbed by liquid absorption, and clean gas is discharged from purified gas outlet.
(2) aerobe oxidation stage: the absorbing liquid of wash tower bottoms is boosted to be pumped into biooxidation reactions device, S2-?
It is mostly oxidised into simple substance S under the action of acidophilia biological desulphurization bacterium, small part is oxidized to SO4 2-.Absorbing liquid after oxidation
Into sedimentation basin, the elemental sulfur after precipitating is discharged through leakage fluid dram, purification.Biooxidation reactions use the acidophilia by domestication raw
Object desulfurization bacterium, temperature are controlled at 35 DEG C, and the start-stop and air mass flow of air pump are controlled by on-line oxidation reduction potential, and oxidation is also
Former current potential control is stablized in -250~-100mV, pH 2~3.5.
(3) the anaerobic reduction stage: the boosted pump of supernatant in sedimentation basin is fed from below into anaerobic reactor, anaerobic reaction
For device using rich sulfate reducing bacteria flora, the residence time is 10-15 hours.SO4 2-Under the action of rich sulfate reducing bacteria flora
Again it is reduced to S2-, absorbing liquid obtains partial reduction, and pH gets a promotion, and contains H2The gas of S is from H2S gas vent flows back into
Containing H2S gas feed is handled again.
(4) absorbing liquid adjusts the reuse stage: the absorbing liquid by anaerobic bio-treated is pumped up into conditioning tank, according to setting
Online pH electrode and online conductivity electrode in conditioning tank output signal to pH on-line monitoring unit and conductivity is supervised online
Unit is surveyed, pH monitors unit and conductivity on-line monitoring unit control lye dosing pump and nutrient solution dosing pump on-line, passes through control
Conductivity range processed is in 30-90mS/cm, and pH range is in 8-9, to control the start-stop of dosing pump.Absorbing liquid after adjusting is boosted
Pump enters the spray head in scrubbing tower.
Also, pH adjusts the lye used can be NaOH or NaCO to the specific feature of this programme3。
Packing layer uses Pall ring or hollow sphere filler.
Liquid outlet and sewage draining exit are equipped with positioned at the lower part of packing layer in the scrubbing tower.
The biooxidation reactions device is the reactor using inner ring gas lift-type air feeding in center, and inside reactor is without mixing
Device is mainly made of outer tube, central draft tube and gas distributor, and central draft tube and outer tube are arranged in concentric circles.Work as sky
After gas enters central draft tube by gas distributor, liquid is set to carry bubble under the momentum of static pressure difference and entrance gas
It is formed and is circulated in reactor, to reach good gas-liquid mixed.Biooxidation reactions device top sets gas outlet
And liquid overflow pipe.
Acidophilia biological desulphurization bacterium bag described in the utility model includes acidophilia sulfur oxidizing bacterium flora or single acidophilia sulphur oxygen
Change bacteria strain.Acidophilia sulfur oxidizing bacterium mainly includes Thiobacillus, solfataricus genus, Macromonas, belongs to resistance to low pH's
Sulfur-oxidizing bacteria.Single acidophilia sulfur oxidizing bacterium bacterial strain mainly includes the acidophilias such as Thiobacillus thioxidans, Thiobacillus ferrooxidans
Autotrophy sulphur oxidation and bacillus.
In the anaerobic reactor, the sulfate of generation is reduced to S in the effect of rich sulfate reducing bacteria flora2-, thus
So that pH is improved.Setting water distributor and three phase separator in anaerobic reactor, to guarantee activated sludge concentration to improve richness
The efficiency of sulfate reducing bacteria flora.Three phase separator is made of sealing gland, settling zone and reflux seam three parts, and it is anti-to be mounted on anaerobism
Answer the top of device that anaerobic reactor is divided into the reaction zone of lower part and the settling zone on top, play gas-liquid separation, be separated by solid-liquid separation and
The effect of sludge reflux.
The richness sulfate reducing bacteria flora is widely present in the habitats such as soil, seawater, fresh water, sludge, in certain condition
It is lower domestication and obtain.
The conditioning tank is closed container, is inside located at line conductivity electrode, online pH electrode.
The utility model compared with prior art, has the following beneficial effects: 1. the utility model using segmented biology
Desulfurization carries out biological oxidation to hydrogen sulfide under the conditions of pH2-3.5 using acidophilia biological desulphurization bacterium, with use neutrality or alkali
Property the existing of environment is compared, and the oxidation rate of hydrogen sulfide significantly improves, and the operating load of biooxidation reactions device improves 6-15
Times, it can reduce equipment scale and investment.2. the utility model by biological oxidation process oxidation-reduction potential (- 250~-
On-line monitoring and control 100mV), it is accurate to control Oxidation of Hydrogen Sulfide process, the appropriate SO4 of generation2-Biology can just be made
Oxidation process maintains optimal acid running environment (pH2-3.5), keeps biological oxidation process efficient operation.And by sulfur-rich
The effect of hydrochlorate reducing bacteria flora and Adding medicine control realize the regeneration of absorbing liquid efficient absorption ability, maintain system balancing.3. raw
At SO4 2-It is handled by anaerobic reduction, on the one hand improves the pH of absorbing liquid, on the other hand can reduce SO4 2-Discharge.4.
Independent conditioning tank is set, and the accurate pH value and nutritional ingredient for controlling absorbing liquid guarantees H2The absorption of S and biological oxidation are all located
In optimum process condition.
Detailed description of the invention
Fig. 1 is the schematic device of the utility model.
In figure: 1- scrubbing tower；2- biooxidation reactions device;3- sedimentation basin;4- anaerobic reactor;5- conditioning tank;6- foam removal
Device;7- spray head;8- packing layer;9- gas distribution pipe;10- elevator pump, 11- elevator pump, 12- elevator pump;13- air pump;14- is led at center
Flow cartridge;15- three phase separator;16- lye dosing pump;17- nutrient solution dosing pump;18- dissolved oxygen electrode;19- oxidation-reduction electrode;
The online pH electrode of 20-;The online conductivity electrode of 21-；22- contains H2S gas feed；23- purified gas outlet；24- leakage fluid dram；
25-H2S gas vent;26- lye;27- nutrient solution.
Specific embodiment
The content of the utility model is described in further details with reference to the accompanying drawings and detailed description.
Embodiment 1:
As shown in Figure 1, a kind of zinc cation desulfurizer, it includes the scrubbing tower 1 for removing hydrogen sulfide, biooxidation reactions
Device 2, sedimentation basin 3, anaerobic reactor 4 and conditioning tank 5.Be successively arranged from top to bottom in scrubbing tower 1 demister 6, spray head 7,
Packing layer 8 and gas distribution pipe 9,1 bottom of scrubbing tower are connected with the top of biooxidation reactions device 2 by elevator pump 10 and pipeline；
Be equipped with dissolved oxygen electrode 18 and oxidation-reduction electrode 19 in biooxidation reactions device 2, at the top of biooxidation reactions device 2 by pipeline with
Sedimentation basin 3, which is connected, makes absorbing liquid overflow enter sedimentation basin 3；The sedimentation basin 3 is closed container, and lower part is divided into tapered structure,
Bottom sets material outlet.Top is divided into two parts by the partition of vertical arrangement, and liquid-inlet, partition right side are provided on the left of partition
It is provided with overflow port.3 top of sedimentation basin is connected with 4 bottom of anaerobic reactor by elevator pump 11 and pipeline；Anaerobic reactor 4
Top is connected with 5 top of conditioning tank by pipeline, and anaerobic reactor water outlet overflow enters conditioning tank 5；5 bottom of conditioning tank passes through
Elevator pump 12 and pipeline are connected with the spray head 7 on 1 top of scrubbing tower, and the boosted pump 12 of the absorbing liquid after adjusting enters scrubbing tower
Spray head 7 in 1.Online pH electrode 20 and online conductivity electrode 21 are equipped in conditioning tank 5.It is provided in 1 lower part of scrubbing tower
Containing H2S gas feed 22, is provided with H at the top of anaerobic reactor2S gas vent 25, H2S gas vent 25 with contain H2S gas into
Mouth 22 is connected by pipeline.Containing H2S gas feed 22 is extended in scrubbing tower 1 and is connected to gas distribution pipe 9.
In the anaerobic reactor, the sulfate of generation is reduced to S in the effect of sulfate reducing bacteria2-, so that pH
It is improved.Setting water distributor and three phase separator, improve sulfur-rich hydrochlorate to guarantee activated sludge concentration in anaerobic reactor
The efficiency of reducing bacteria flora.Three phase separator is made of sealing gland, settling zone and reflux seam three parts, is mounted on anaerobic reactor
Anaerobic reactor is divided into the reaction zone of lower part and the settling zone on top by top, is played gas-liquid separation, separation of solid and liquid and sludge and is returned
The effect of stream.Packing layer 8 uses Pall ring or hollow sphere filler.It is equipped with positioned at the lower part of packing layer in the scrubbing tower
Liquid mouth and sewage draining exit.
The biooxidation reactions device is the reactor using inner ring gas lift-type air feeding in center, and inside reactor is without mixing
Device is mainly made of outer tube, central draft tube and gas distributor, and central draft tube and outer tube are arranged in concentric circles.Work as sky
After gas enters central draft tube by gas distributor, liquid is set to carry bubble under the momentum of static pressure difference and entrance gas
It is formed and is circulated in reactor, to reach good gas-liquid mixed.Biooxidation reactions device top sets gas outlet
And liquid overflow pipe.
The conditioning tank is closed container, is inside located at line conductivity electrode, online pH electrode.
By above-mentioned apparatus, H in gas is removed2The technique of S gas is specific as follows:
(1) H2The S absorption stage: gas is by containing H2S gas feed 22 enters from 1 bottom of scrubbing tower, pushes up with from scrubbing tower 1
The absorbing liquid counter current contacting that portion enters, H2S is absorbed by liquid absorption, and clean gas is discharged from purified gas outlet 23.
(2) aerobe oxidation stage: the boosted pump 10 of the absorbing liquid of 1 bottom of scrubbing tower is sent into biooxidation reactions device 2,
S2-It is mostly oxidised into simple substance S under the action of acidophilia biological desulphurization bacterium, small part is oxidized to SO4 2-.Suction after oxidation
It receives liquid and enters sedimentation basin 3, the elemental sulfur after precipitating is discharged through leakage fluid dram 24, purification.Biooxidation reactions are used by domestication
Acidophilia biological desulphurization mixed bacterial, at 35 DEG C, the start-stop and air mass flow of air pump 13 restore electricity by on-line oxidation for temperature control
Position is controlled, and oxidation reduction potential control is stablized in -250~-100mV, pH 2~3.5.
(3) the anaerobic reduction stage: the boosted pump of supernatant in sedimentation basin 3 11 is fed from below into anaerobic reactor 4, anaerobism
Reactor 4 uses the i.e. rich sulfate reducing bacteria flora of the amphimicrobian Mixed Microbes based on sulfate reducing bacteria, when hydraulic retention
Between be 10-15 hours.SO4 2-It is reduced to S again under the action of rich sulfate reducing bacteria flora2-, absorbing liquid obtain part also
Original, pH get a promotion, and contain H2The gas of S is from H2S gas vent 25 is flowed back into containing H2S gas feed 22 is handled again.
(4) absorbing liquid adjusts the reuse stage: the absorbing liquid by anaerobic bio-treated is pumped up into conditioning tank, according to setting
Online pH electrode 20 and online conductivity electrode 21 in conditioning tank output signal to pH on-line monitoring unit and conductivity exists
Line monitoring unit, pH monitor unit and conductivity on-line monitoring unit control lye dosing pump 16 and nutrient solution dosing pump on-line
17, by control conductivity range in 30-90mS/cm, pH range is in 8-9, to control the start-stop of dosing pump.Absorption after adjusting
The boosted pump 12 of liquid enters the spray head 7 in scrubbing tower.
Dosing pump includes lye dosing pump 16 and nutrient solution dosing pump 17；PH adjust the lye that uses can be NaOH or
NaCO3。
The present embodiment carries out H using acidophilia sulfur oxidizing bacterium flora2S oxidation processes.
Desulphurization Strains are derived from leather treatment plant wastewater treatment sludge, tame culture medium (KH by desulfurization2PO4, 2.0g/L；
K2HPO4, 2.0 g/L；NH4Cl, 0.4 g/L；MgCl2·6H2O, 0.2 g/L；FeSO4·7H2O, 0.01 g/L；Na2S, 2-8
G/L it) tames.
Using Na2S E-test tames acidophilia sulfur oxidizing bacterium flora.It takes sludge to stand supernatant 200ml and is put into dress
In the wide-mouth bottle for having 2000ml circulation liquid culture medium, ventilation culture.Substrate (Na2S) initial concentration is 2g/L, is down to 2.5 to pH
Hereinafter, standing 30 minutes, upper solution 200ml is poured out, is put into the wide-mouth bottle equipped with 2000m l circulation liquid culture medium, ventilation
Culture.Repeat above step, substrate (Na2 S) concentration gradually rises to 8g/L from 2g/L by 100% increasing velocity.Biomass reaches
Biomass is finally reached about 1 × 107A/ml.
Rich sulfate reducing bacteria flora is by municipal sewage plant anaerobic sludge, through taming culture medium (K2HPO4, 0.5g/L；
NH4Cl, 1.0g/L；CaCl2·2H2O, 0.1g/L；MgSO4·7H2O, 2.0g/L；Yeast extract, 1g/L；70% sodium lactate solution,
4ml/L；Na2SO4,0.5g/L；Fe(NH4)2(SO4)2,1.2g/L；Ascorbic acid, 0.5g/L) it is tamed under 35 DEG C, anaerobic condition
And it obtains.
Using bio-desulfurization device described herein, nutrient solution composition are as follows: KH2PO4, 2.0g/L；K2HPO4, 2.0 g/L；
NH4Cl, 0.4 g/L；MgCl2·6H2O, 0.2 g/L；FeSO4·7H2O, 0.01 g/L；Adjusting air aeration amount makes redox
Control of Electric potentials is in -190mV, and continuous operation 30 days, pH stablized in 2.2-2.3 in bioreactor.Bioreactor operating load
150kgS/m3When d, S2-Removal rate is up to 95% or more.
Embodiment 2:
The present embodiment place same as Example 1 repeats no more, the difference is that, using neutral sulfur oxidizing bacterium flora into
Row H2S processing.
Desulphurization Strains are derived from leather treatment plant wastewater treatment sludge, tame culture medium (KH by desulfurization2PO4, 2.0g/L；
K2HPO4, 2.0 g/L；NH4Cl, 0.4 g/L；MgCl2·6H2O, 0.2 g/L；FeSO4·7H2O, 0.01 g/L；Na2S, 2-8
G/L it) tames；
Using Na2S E-test tames neutral sulfur oxidizing bacterium flora.It takes sludge standing supernatant 200ml to be put into be equipped with
2000ml is recycled in the wide-mouth bottle of liquid culture medium, ventilation culture.Substrate (Na2S) initial concentration is 2g/L.After 3 days, 30 are placed
Minute, upper solution 200ml is poured out, is put into the wide-mouth bottle equipped with 2000ml circulation liquid culture medium.It is repeated once within every 3 days, bottom
Object (Na2 S) concentration gradually rises to 8g/L from 2g/L by 100% increasing velocity.Control loop liquid pH is not less than 6 during domestication,
Biomass is finally reached about 1 × 107A/ml.
Using bio-desulfurization device described herein, nutrient solution composition are as follows: KH2PO4, 2.0g/L；K2HPO4, 2.0 g/L；
NH4Cl, 0.4 g/L；MgCl2·6H2O, 0.2 g/L；FeSO4·7H2O, 0.01 g/L；Adjusting air aeration amount makes redox
Control of Electric potentials is in -190mV, and continuous operation 30 days, pH stablized in 6.5-7.0 in bioreactor.Bioreactor operating load
15kgS/m3When d, S2-Removal rate is up to 94% or more.
Embodiment 3:
The present embodiment place same as Example 1 repeats no more, the difference is that, adjusting air aeration amount makes oxidation also
Former current potential control is in -270mV, and continuous operation 30 days.Since oxidation-reduction potential is too low, lead to S2-Aoxidize insufficient, biology is anti-
It answers pH in device to stablize in 3.6-4.0, is unfavorable for acidophilia sulfur oxidizing bacterium to S2-Oxidation process.Bioreactor operating load
25kgS/m3When d, S2-Removal rate is up to 95% or more.
Embodiment 4:
The present embodiment place same as Example 1 repeats no more, the difference is that, adjusting air aeration amount makes oxidation also
Former current potential control is in -80mV, and continuous operation 30 days, pH stablized in 1.5-1.8 in bioreactor.Bioreactor operating load
100kgS/m3When d, S2-Removal rate is up to 95% or more.
Embodiment 5:
The present embodiment place same as Example 1 repeats no more, the difference is that, using acidophilic thiobacillus sulfur oxide
Thiobacillus Acidithiobacillus thiooxidans (ATCC 19377) carries out H2S oxidation processes.
Using bio-desulfurization device described herein, culture medium group becomes (NH4)2SO4, 0.3 g/L；K2HPO4, 3.5 g/L；
MgSO4·7H2O, 0.5 g/L；CaCl2, 0.25 g/L；FeSO4·7H2O 0.01 g/L；Adjusting air aeration amount makes oxidation also
Former current potential control is in -156mV, and continuous operation 30 days, pH stablized in 2.1-2.2 in bioreactor, and bioreactor operation is negative
Lotus 186kgS/m3D, S2-Removal rate is up to 97% or more.
Embodiment 6:
The present embodiment place same as Example 1 repeats no more, the difference is that, using neutral Thiobacillus desulphurization sulphur bar
Bacterium Thiobacillus thioparus Beijerinck(ATCC 8158) carry out H2S oxidation processes.
Using bio-desulfurization device described herein, culture medium group becomes Na2HPO4, 1.2 g/L；KH2PO4, 1.8 g/L；
MgSO4 ·7H2O, 0.1 g/L；(NH4)2SO4, 0.1 g/L；CaCl2, 0.03 g/L；FeCl3, 0.02 g/L；MnSO4, 0.02
g/L；Adjusting air aeration amount makes oxidation reduction potential control in -160mV, and continuous operation 30 days, pH stablized in bioreactor
In 6.5-6.7, bioreactor operating load 22kgS/m3D, S2-Removal rate is up to 95% or more.
Claims (6)
1. a kind of zinc cation desulfurizer, it is characterized in that it includes the scrubbing tower for removing hydrogen sulfide, biooxidation reactions device sinks
Shallow lake pond, anaerobic reactor and conditioning tank；It is successively arranged demister, spray head, packing layer and gas distribution from top to bottom in scrubbing tower
Pipe, wash tower bottoms are connected with the top of biooxidation reactions device by elevator pump and pipeline；At the top of biooxidation reactions device
Being connected by pipeline with sedimentation basin makes absorbing liquid overflow enter sedimentation basin；Dissolved oxygen electrode and oxygen are equipped in biooxidation reactions device
Change reducing electrode；The sedimentation basin is closed container, and lower part is divided into tapered structure, and bottom sets material outlet；Top is by vertical cloth
The partition set is divided into two parts, and liquid-inlet is provided on the left of partition, is provided with overflow port on the right side of partition；At the top of sedimentation basin with detest
Oxygen reactor bottom is connected by elevator pump with pipeline；
Anaerobic reactor top is connected with conditioning tank top by pipeline, and anaerobic reactor water outlet overflow enters conditioning tank；It adjusts
Section bottom of pond portion is connected by elevator pump and pipeline with the spray head on scrubbing tower top；Be equipped in conditioning tank online pH electrode and
Line conductivity electrode；It is provided in scrubbing tower lower part containing H2S gas feed, is provided with H at the top of anaerobic reactor2S gas goes out
Mouthful, H2S gas vent with contain H2S gas feed is connected by pipeline；Containing H2S gas feed extends in scrubbing tower and gas distribution
Pipe connection.
2. zinc cation desulfurizer according to claim 1 is filled out it is characterized in that being located in the scrubbing tower
The lower part of the bed of material is equipped with liquid outlet and sewage draining exit.
3. zinc cation desulfurizer according to claim 1, it is characterized in that packing layer using Pall ring or
Hollow sphere filler.
4. zinc cation desulfurizer according to claim 1, it is characterized in that the biooxidation reactions device is using interior
The reactor of circulation gas-lifting type air feeding in center, it includes outer tube, central draft tube and gas distributor, central draft tube and outer tube
It is arranged in concentric circles；Biooxidation reactions device top sets gas outlet and liquid overflow pipe.
5. zinc cation desulfurizer according to claim 1, it is characterized in that water distributor is arranged in the anaerobic reactor
And three phase separator, three phase separator are made of sealing gland, settling zone and reflux seam three parts, are mounted on the top of anaerobic reactor
Anaerobic reactor is divided into the reaction zone of lower part and the settling zone on top, plays gas-liquid separation, separation of solid and liquid and sludge reflux
Effect.
6. zinc cation desulfurizer according to claim 1, it is characterized in that the conditioning tank is closed container.
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| CN201820361102.XU CN208340431U (en) | 2018-03-16 | 2018-03-16 | Zinc cation desulfurizer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211672A (en) * | 2018-03-16 | 2018-06-29 | 山东省科学院能源研究所 | Zinc cation desulfurizer and method based on acidophilia biological desulphurization bacterium |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108211672A (en) * | 2018-03-16 | 2018-06-29 | 山东省科学院能源研究所 | Zinc cation desulfurizer and method based on acidophilia biological desulphurization bacterium |
| CN108211672B (en) * | 2018-03-16 | 2024-01-26 | 山东省科学院能源研究所 | Biological washing desulfurization device and method based on acidophilic biological desulfurization bacteria |
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