CN104190247A - Biotrickling filter filler and method for preparing biotrickling filter and removing waste gas using biotrickling filter filler - Google Patents
Biotrickling filter filler and method for preparing biotrickling filter and removing waste gas using biotrickling filter filler Download PDFInfo
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- CN104190247A CN104190247A CN201410392757.XA CN201410392757A CN104190247A CN 104190247 A CN104190247 A CN 104190247A CN 201410392757 A CN201410392757 A CN 201410392757A CN 104190247 A CN104190247 A CN 104190247A
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- 238000000034 method Methods 0.000 title claims abstract description 35
- 239000000945 filler Substances 0.000 title claims abstract description 17
- 239000002912 waste gas Substances 0.000 title abstract description 11
- 239000011259 mixed solution Substances 0.000 claims abstract description 48
- 244000005700 microbiome Species 0.000 claims abstract description 35
- 239000000243 solution Substances 0.000 claims abstract description 29
- 238000003756 stirring Methods 0.000 claims abstract description 21
- 239000000725 suspension Substances 0.000 claims abstract description 18
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 16
- 238000002156 mixing Methods 0.000 claims abstract description 11
- 239000007789 gas Substances 0.000 claims description 61
- 238000012856 packing Methods 0.000 claims description 52
- 238000011049 filling Methods 0.000 claims description 27
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 claims description 20
- 229910000037 hydrogen sulfide Inorganic materials 0.000 claims description 19
- 235000015097 nutrients Nutrition 0.000 claims description 17
- 235000010443 alginic acid Nutrition 0.000 claims description 13
- 229920000615 alginic acid Polymers 0.000 claims description 13
- IXPNQXFRVYWDDI-UHFFFAOYSA-N 1-methyl-2,4-dioxo-1,3-diazinane-5-carboximidamide Chemical group CN1CC(C(N)=N)C(=O)NC1=O IXPNQXFRVYWDDI-UHFFFAOYSA-N 0.000 claims description 12
- 239000012467 final product Substances 0.000 claims description 12
- 235000010413 sodium alginate Nutrition 0.000 claims description 12
- 239000000661 sodium alginate Substances 0.000 claims description 12
- 229940005550 sodium alginate Drugs 0.000 claims description 12
- FHVDTGUDJYJELY-UHFFFAOYSA-N 6-{[2-carboxy-4,5-dihydroxy-6-(phosphanyloxy)oxan-3-yl]oxy}-4,5-dihydroxy-3-phosphanyloxane-2-carboxylic acid Chemical compound O1C(C(O)=O)C(P)C(O)C(O)C1OC1C(C(O)=O)OC(OP)C(O)C1O FHVDTGUDJYJELY-UHFFFAOYSA-N 0.000 claims description 11
- 229940072056 alginate Drugs 0.000 claims description 11
- 239000010815 organic waste Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 235000017166 Bambusa arundinacea Nutrition 0.000 claims description 8
- 235000017491 Bambusa tulda Nutrition 0.000 claims description 8
- 241001330002 Bambuseae Species 0.000 claims description 8
- 235000015334 Phyllostachys viridis Nutrition 0.000 claims description 8
- 239000011425 bamboo Substances 0.000 claims description 8
- 239000003610 charcoal Substances 0.000 claims description 8
- 230000003134 recirculating effect Effects 0.000 claims description 8
- 230000000813 microbial effect Effects 0.000 claims description 7
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 6
- 239000012530 fluid Substances 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 4
- 239000007788 liquid Substances 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 229960001126 alginic acid Drugs 0.000 claims description 2
- 239000000783 alginic acid Substances 0.000 claims description 2
- -1 alginic acid sodium salt Chemical class 0.000 claims description 2
- 239000011324 bead Substances 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 238000011068 loading method Methods 0.000 claims description 2
- 229920002635 polyurethane Polymers 0.000 claims description 2
- 239000004814 polyurethane Substances 0.000 claims description 2
- 238000001556 precipitation Methods 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 abstract 1
- 239000002253 acid Substances 0.000 abstract 1
- 230000002411 adverse Effects 0.000 abstract 1
- 230000007613 environmental effect Effects 0.000 abstract 1
- 238000002791 soaking Methods 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 11
- 230000000052 comparative effect Effects 0.000 description 10
- 239000000499 gel Substances 0.000 description 9
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 7
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 7
- 230000001580 bacterial effect Effects 0.000 description 7
- 239000012855 volatile organic compound Substances 0.000 description 7
- 230000008569 process Effects 0.000 description 4
- 235000010410 calcium alginate Nutrition 0.000 description 3
- 239000000648 calcium alginate Substances 0.000 description 3
- 229960002681 calcium alginate Drugs 0.000 description 3
- OKHHGHGGPDJQHR-YMOPUZKJSA-L calcium;(2s,3s,4s,5s,6r)-6-[(2r,3s,4r,5s,6r)-2-carboxy-6-[(2r,3s,4r,5s,6r)-2-carboxylato-4,5,6-trihydroxyoxan-3-yl]oxy-4,5-dihydroxyoxan-3-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylate Chemical compound [Ca+2].O[C@@H]1[C@H](O)[C@H](O)O[C@@H](C([O-])=O)[C@H]1O[C@H]1[C@@H](O)[C@@H](O)[C@H](O[C@H]2[C@H]([C@@H](O)[C@H](O)[C@H](O2)C([O-])=O)O)[C@H](C(O)=O)O1 OKHHGHGGPDJQHR-YMOPUZKJSA-L 0.000 description 3
- 235000016709 nutrition Nutrition 0.000 description 3
- FRXSZNDVFUDTIR-UHFFFAOYSA-N 6-methoxy-1,2,3,4-tetrahydroquinoline Chemical compound N1CCCC2=CC(OC)=CC=C21 FRXSZNDVFUDTIR-UHFFFAOYSA-N 0.000 description 2
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 2
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
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- 230000007269 microbial metabolism Effects 0.000 description 2
- 230000035764 nutrition Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 241000605222 Acidithiobacillus ferrooxidans Species 0.000 description 1
- 241000193830 Bacillus <bacterium> Species 0.000 description 1
- 241000894006 Bacteria Species 0.000 description 1
- 239000002028 Biomass Substances 0.000 description 1
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 241000589516 Pseudomonas Species 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 241000605118 Thiobacillus Species 0.000 description 1
- 241001509286 Thiobacillus denitrificans Species 0.000 description 1
- 241000589651 Zoogloea Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 238000003915 air pollution Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 239000010796 biological waste Substances 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000001110 calcium chloride Substances 0.000 description 1
- 229910001628 calcium chloride Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000357 carcinogen Toxicity 0.000 description 1
- 239000003183 carcinogenic agent Substances 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000007084 catalytic combustion reaction Methods 0.000 description 1
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- 230000008014 freezing Effects 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 235000011187 glycerol Nutrition 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
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- 238000006386 neutralization reaction Methods 0.000 description 1
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- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920001282 polysaccharide Polymers 0.000 description 1
- 239000005017 polysaccharide Substances 0.000 description 1
- 150000004804 polysaccharides Chemical class 0.000 description 1
- 235000010408 potassium alginate Nutrition 0.000 description 1
- 239000000737 potassium alginate Substances 0.000 description 1
- MZYRDLHIWXQJCQ-YZOKENDUSA-L potassium alginate Chemical compound [K+].[K+].O1[C@@H](C([O-])=O)[C@@H](OC)[C@H](O)[C@H](O)[C@@H]1O[C@@H]1[C@@H](C([O-])=O)O[C@@H](O)[C@@H](O)[C@H]1O MZYRDLHIWXQJCQ-YZOKENDUSA-L 0.000 description 1
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- 239000010802 sludge Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention provides a biotrickling filter filler and a method for preparing a biotrickling filter and removing waste gas using the biotrickling filter filler. A method for preparing the biotrickling filter filler comprises the following steps: step 1, uniformly mixing and stirring a microorganism suspension solution and a sodium alga acid solution to form a mixed solution A; step 2, adding a filler carrier into the mixed solution A to uniformly stir and form a mixed solution B; and step 3, dispersing the mixed solution B by virtue of a vibrating screen, conveying the mixed solution B to a calcium chloride solution and soaking to prepare the biotrickling filter filler. Compared with the conventional microorganism film formation method, the film formation starting time of the conventional biotrickling filter is greatly shortened; the waste gas treatment efficiency of the biotrickling filter is improved; the stable operation of the biotrickling filter is further facilitated; the biotrickling filter is high in resistance to adverse environmental interference; the biotrickling filter is relatively efficient and stable.
Description
Technical field
The present invention relates to waste gas biological removal technical field, particularly, relate to a kind of bio-trickling tower packing and prepare bio-trickling filter, remove the method for waste gas.
Background technology
The foul waste gas that municipal sewage plant and Sewage Treatment at Pharmaceutical Factory station produce comprises hydrogen sulfide (H
2s) and the poisonous and harmful element such as volatile organic matter (volatileorganic compounds, VOCs), can severe contamination surrounding environment.Hydrogen sulfide is colourless hypertoxic foul gas, and its olfact is about 0.00143mg/m
3, when low concentration, just human body is had to very large harm; VOCs mostly is carcinogen, under illumination, can cause photochemical fog.Biological waste gas purification technology is the study hotspot in current Air Pollution Control field, and mainly the metabolic processes of the microorganism on filler by apposition growth, is CO contaminant degradation
2, the material such as water and minerals, and utilize waste gas to generate new microbial cell matter as nutrition or the energy, form stable equilibrium's micro-ecological environment.Than traditional physico-chemical process such as absorption process, absorption method, Production by Catalytic Combustion Process, neutralisation and oxidizing process, the advantages such as that bioanalysis has is effective, stable operation, operating cost are low, non-secondary pollution, be particularly suitable for processing large flow, low concentration gas, be more and more subject to people's concern.
Utilize potassium alginate, sodium alginate soluble in water, and its aqueous solution have certain viscosity; The water-fast feature of calcium alginate can be by microorganism embedding wherein, if bio-trickling tower packing and microorganism are embedded in calcium alginate gel simultaneously, can be used as novel bio-trickling tower packing, because carrier is inertia, and there is no chemical reagent participation process, so the microorganism being fixed is in the physiological condition identical with suspension microorganism, so just can not affect metabolism and the growth of microorganism, also can not affect characteristic and the vigor of microorganism.Efficient immobilized microorganism conversion capability can reach tens times of free cell, can make the contact between microorganism more tight, and gas and nutrition supply form gradient, are conducive to the raising of transformation efficiency.
By the circulation-supplied of circulated sprinkling liquid, ensure on the one hand the nutritional need of microorganism, can avoid on the other hand the accumulation due to metabolite, microbial metabolism is caused to feedback inhibition, by the compact texture after calcium-alginate-immobilized, can avoid cell impaired and pollute.
Summary of the invention
For defect of the prior art, the object of this invention is to provide a kind of bio-trickling tower packing and prepare bio-trickling filter, remove the method for waste gas.
The present invention is achieved by the following technical solutions:
First aspect, the present invention relates to a kind of bio-trickling tower packing, and described bio-trickling tower packing can be prepared and be obtained by following steps:
Step 1, by the suspension of microorganism and alginate solution mixing and stirring, forms mixed solution A;
Step 2 adds filling carrier in mixed solution A, stirs, and forms mixed solution B;
Step 3, disperses mixed solution B to be transported in calcium chloride solution by shaking screen, soaks, and gets final product to obtain bio-trickling tower packing.
Preferably, described method comprises the steps: the suspension of microorganism and is cooled to after the sodium alginate soln mixing and stirring of room temperature, to the filling carrier that adds porosity 50% left and right in mixed solution, the volume of filling carrier is about 0.5～0.8 times of mixed solution, then filling carrier is stirred together with mixed solution of sodium alginate with microorganism; The mixed liquor of above-mentioned interpolation filling carrier is disperseed to be transported in calcium chloride solution by shaking screen, the sodium alginate on filling carrier surface reacts with calcium chloride rapidly, form stable calcium alginate gel, firmly be attached to filling surface, and in calcium chloride solution, soak 30 minutes, the thorough calcium of alginate is analysed, get final product to obtain bio-trickling tower packing; Pack the bio-trickling tower packing of generation into bio-trickling filter, bed stuffing height is 1～1.5m; Pass into the gas such as hydrogen sulfide or VOCs that contains microorganism specific substrate to bio-trickling filter, after one week, detect and import and export gas concentration, the voc_s removal rates such as VOCs reach more than 90%, and the clearance of hydrogen sulfide reaches more than 99%.
Preferably, described microorganism is through screening acclimated microorganism, and described screening domestication concrete steps are:
Step 1, adds activated sludge in common bio-trickling filter to and passes into H
2s or VOC
sgas is tamed;
Step 2, progressively improves according to removal efficiency testing result and microscopy zoogloea growing state the concentration that passes into gas;
Step 3, when the removal efficiency of object gas is acquired a certain degree and stable after to bio-trickling filter in microorganism carry out preservation;
Step 4, method for preserving is to expand and cultivate after dull and stereotyped single bacterium colony screening, to the centrifugal rear abandoning supernatant of zymotic fluid, adds 20% glycerine ,-70 DEG C of freezings.
Preferably, described microorganism is Thiobacillus ferrooxidans, thiobacillus denitrificans, Thiobacillus thioxidans or false pseudomonas bacillus.
Preferably, the volume ratio of described mixed solution A and filling carrier is 1:0.5～0.8, the zymotic fluid of described microorganism and the volume ratio of alginate solution are 1:1～2, and the volume ratio of described mixed solution B and calcium chloride solution is 1:2～3, and described alginate is sodium alginate.
Preferably, described soak time is 30min, and the quality solubility of the suspension of described microorganism is 10～30%, and the concentration of described alginate solution is 8%, and the concentration of described calcium chloride solution is 2mol/L.
Preferably, the surface attachment gel layer of described bio-trickling tower packing, gel layer thickness is 1～3mm, the particle diameter of described filling carrier is 5～10cm.
Preferably, described filling carrier is one or several the mixing in bamboo charcoal particle, haydite or polyurethane bead.
Preferably, the suspension of described microorganism, for utilizing after microbial strains fermented and cultured 24～48h, discards clear liquid after 4200rpm/min is centrifugal, in precipitation, adds sterilized water, is mixed with the microbial suspension of mass concentration 10～30%.
Preferably, the preparation method of described alginate solution is: appropriate alginic acid sodium salt and water are stirred to dissolving completely taking mass volume ratio heating after 8% is mixed in reactor.
Second aspect, the present invention relates to a kind of method that aforesaid bio-trickling tower packing is prepared bio-trickling filter, and described method comprises the steps:
Pack aforesaid bio-trickling tower packing into bio-trickling filter, filler loading height 1～1.5m, gets final product to obtain bio-trickling filter; Described bio-trickling filter comprises tower body, recirculating nutrient solution spray system, wind system and bio-trickling tower packing; The recirculating nutrient solution formula of described recirculating nutrient solution spray system: NH
4cl 2.64g/L; KH
2pO
41.36g/L; MgSO
47H
2o0.2g/L; FeSO
47H
2o 0.01g/L; NaCl 5g/L; Circulating fluid flow rate is 20～40L/h.
The third aspect, the present invention relates to a kind of method of utilizing aforesaid bio-trickling filter to remove hydrogen sulfide or volatile organic waste gas, comprises the steps:
Pass into hydrogen sulfide gas or volatile organic waste gas to bio-trickling filter, start nutrient solution circulated sprinkling filling surface, ventilate and reach even running state after one week; The intake of described hydrogen sulfide gas or volatile organic waste gas is 80～600mg/m
3.
Compared with prior art, the present invention has following beneficial effect:
1. the present invention is fixed on filling carrier by cell fixation method by microorganism, thereby realizes the object of removing waste gas by immobilized microbial metabolism, and the method is simple, and cost is low, and efficiency is high, and effect is remarkable, and clearance can reach more than 90%.
2. traditional microorganism colonization method is by the polysaccharide of the long-term oligotrophic state microorganism secretion film forming that bonds gradually, the biofilm cycle reaches even several months several weeks, Enrichment by Microorganisms combines in the interior micro-ecological environment of film, microbial film is in generation gradually and melt, reach a kind of very fragile stable state, and greatly having shortened traditional biological, the inventive method drips the filter tower start-up time, improve bio-trickling filter for exhaust-gas treatment efficiency, more be conducive to the stable operation of bio-trickling filter, anti-poor environment interference performance is strong, that bio-trickling filter possesses the more feature of efficient stable.Because objective microbe is to be fixed in fine and close gel, can avoid impaired and pollute, simultaneously microbial biomass keeps stable, can eliminate traditional biological and drip filter tower, because melting, biomembrane lost efficacy, the obstruction causing due to microorganism excessive multiplication.
Detailed description of the invention
Below in conjunction with specific embodiment, the present invention is described in detail.Following examples will contribute to those skilled in the art further to understand the present invention, but not limit in any form the present invention.It should be pointed out that to those skilled in the art, without departing from the inventive concept of the premise, can also make some distortion and improvement.These all belong to protection scope of the present invention.
The bio-trickling filter relating in following embodiment all adopts high 1.5m, the stainless steel tower body of internal diameter 0.58m, and filling carrier adopts the porous ceramic grain of diameter 0.7cm left and right, porosity 48% or employing bamboo charcoal particle average grain diameter 0.8cm, porosity 50%.Gas flow rate is about 6m
3/ h.
Described bio-trickling filter comprises tower body, recirculating nutrient solution spray system, wind system and bio-trickling tower packing, packed height 1～1.5m.
The recirculating nutrient solution formula of bio-trickling filter: NH
4cl 2.64g/L; KH
2pO
41.36g/L; MgSO
47H
2o 0.2g/L; FeSO
47H
2o 0.01g/L; NaCl 5g/L; Circulating fluid flow rate is 20～40L/h.
embodiment 1
The present embodiment relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by mass concentration 20% through the bacterial classification of hydrogen sulfide gas domestication, with concentration be 8% sodium alginate soln 100L mixing and stirring, form mixed solution A;
Step 2, is the bamboo charcoal particle of 1:0.6 to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain the gel layer thickness bio-trickling tower packing that is 1～3mm.
The present embodiment also relates to a kind of method of utilizing bio-trickling filter to remove hydrogen sulfide or volatile organic waste gas, comprises the steps:
The bio-trickling tower packing that the present embodiment is obtained packs above-mentioned bio-trickling filter into, and bed stuffing height 1.2m, passes into 180mg/m to bio-trickling filter
3h
2s gas starts nutrient solution circulated sprinkling filling surface simultaneously, ventilates and reaches even running state after one week, now detects the H of gas port
2s gas concentration, H after calculating
2the clearance of S gas reaches more than 99%.
embodiment 2
The present embodiment relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by mass concentration 15% through the bacterial classification of styrene gas domestication, with concentration be 8% sodium alginate soln 100L mixing and stirring, form mixed solution A;
Step 2, is the haydite of 1:0.7 to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain the gel layer thickness bio-trickling tower packing that is 1～3mm.
The present embodiment also relates to a kind of method of utilizing bio-trickling filter to remove hydrogen sulfide or volatile organic waste gas, comprises the steps:
The bio-trickling tower packing that this enforcement is obtained packs above-mentioned bio-trickling filter into, and bed stuffing height 1.2m, passes into 206mg/m to bio-trickling filter
3styrene volatilization gas, start nutrient solution circulated sprinkling filling surface simultaneously, ventilate and reach even running state after 10 days, now detect the styrene gas concentration of gas port, after calculating, the clearance of styrene gas reaches more than 95%.
embodiment 3
The present embodiment relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by thalline mass fraction 25% through dimethylbenzene organic gas domestication bacterial classification, is that 8% sodium alginate soln 100L mixes with concentration, stirs, and forms mixed solution A;
Step 2, is the bamboo charcoal particle of 1:0.5 to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain the gel layer thickness bio-trickling tower packing that is 1～3mm.
The present embodiment also relates to a kind of method of utilizing bio-trickling filter to remove hydrogen sulfide or volatile organic waste gas, comprises the steps:
The bio-trickling tower packing that the present embodiment is obtained packs above-mentioned bio-trickling filter into, and bed stuffing height 1.2m, passes into 238mg/m to bio-trickling filter
3dimethylbenzene volatilization gas, start nutrient solution circulated sprinkling filling surface simultaneously, ventilate and reach even running state after one week, now detect the dimethylbenzene gas concentration of gas port, after calculating, the clearance of dimethylbenzene gas reaches more than 90%.
embodiment 4
The present embodiment relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, by the suspension 50L of the bacterial classification of taming through toluene waste gas, thalline mass concentration is 15%, is that 8% sodium alginate soln 100L mixes with concentration, stirs, and forms mixed solution A;
Step 2, is the haydite of 1:0.8 to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain the gel layer thickness bio-trickling tower packing that is 1～3mm.
The present embodiment also relates to a kind of method of utilizing bio-trickling filter to remove hydrogen sulfide or volatile organic waste gas, comprises the steps:
The bio-trickling tower packing that the present embodiment is obtained packs above-mentioned bio-trickling filter into, and bed stuffing height 1.2m, passes into 365mg/m to bio-trickling filter
3toluene volatilization gas, start nutrient solution circulated sprinkling filling surface simultaneously, ventilate and reach even running state after 15 days, now detect the toluene gas concentration of gas port, after calculating, the clearance of toluene gas reaches more than 90%.
comparative example 1
This comparative example relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by mass concentration 20% through the bacterial classification of hydrogen sulfide gas domestication, with concentration be 8% silica gel solution 100L mixing and stirring, form mixed solution A;
Step 2, is 1:0.4 bamboo charcoal particle to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain bio-trickling tower packing.
The bio-trickling tower packing that this comparative example is obtained packs above-mentioned bio-trickling filter into, and bed stuffing height 1.2m, passes into 180mg/m to bio-trickling filter
3h
2s gas starts nutrient solution circulated sprinkling filling surface simultaneously, ventilates after one week, detects the H of gas port
2s gas concentration, H after calculating
2the clearance of S gas is 32%, and its clearance is far smaller than 90% as seen.
comparative example 2
This comparative example relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by mass concentration 20% through the bacterial classification of hydrogen sulfide gas domestication, with concentration be 8% sodium alginate soln mixing and stirring, form mixed solution A;
Step 2, is the bamboo charcoal particle of 1:0.4 to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2mol/L calcium chloride solution that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain bio-trickling tower packing.
The bio-trickling tower packing that this comparative example is obtained packs above-mentioned bio-trickling filter into, and the height of every layer of filling 80%, passes into 180mg/m to bio-trickling filter
3h
2s gas starts nutrient solution circulated sprinkling filling surface simultaneously, ventilates and reaches even running state after one week, now detects the H of gas port
2s gas concentration, H after calculating
2the clearance of S gas is 43%, and its clearance is far smaller than 90% as seen.
comparative example 3
This comparative example relates to a kind of bio-trickling tower packing, and described filler is prepared by the following method and obtained:
Step 1, the suspension 50L by mass concentration 20% through the bacterial classification of hydrogen sulfide gas domestication, with concentration be 8% sodium alginate soln mixing and stirring, form mixed solution A;
Step 2, is 1:0.3 bamboo charcoal particle to adding volume ratio in mixed solution A, stirs, and forms mixed solution B;
Step 3, it is in 2.5mol/L calcium nitrate that mixed solution B is disperseed to be transported to solubility by shaking screen, soaks after 30 minutes, gets final product to obtain bio-trickling tower packing.
The bio-trickling tower packing that this comparative example is obtained packs above-mentioned bio-trickling filter into, and the height of every layer of filling 80%, passes into 180mg/m to bio-trickling filter
3h
2s gas starts nutrient solution circulated sprinkling filling surface simultaneously, ventilates and reaches even running state after one week, now detects the H of gas port
2s gas concentration, H after calculating
2the clearance of S gas is 40%, and its clearance is far smaller than 90% as seen.
In sum, compare by above-described embodiment 1～4 and comparative example 1～3, after bio-trickling tower packing prepared by known employing the inventive method uses as bio-trickling tower packing, pass into the gas such as hydrogen sulfide or VOCs that contains microorganism specific substrate to bio-trickling filter, after one week, detect and import and export gas concentration, the clearance of volatile organic matter reaches more than 90%, and the clearance of hydrogen sulfide reaches more than 99%.
Above specific embodiments of the invention are described.It will be appreciated that, the present invention is not limited to above-mentioned specific implementations, and those skilled in the art can make various distortion or amendment within the scope of the claims, and this does not affect flesh and blood of the present invention.
Claims (10)
1. a bio-trickling tower packing, is characterized in that, described bio-trickling tower packing can be prepared and be obtained by following steps:
Step 1, by the suspension of microorganism and alginate solution mixing and stirring, forms mixed solution A;
Step 2 adds filling carrier in mixed solution A, stirs, and forms mixed solution B;
Step 3, disperses mixed solution B to be transported in calcium chloride solution by shaking screen, soaks, and gets final product to obtain bio-trickling tower packing.
2. bio-trickling tower packing as claimed in claim 1, is characterized in that, described microorganism is through screening acclimated microorganism.
3. bio-trickling tower packing as claimed in claim 1, it is characterized in that, the volume ratio of described mixed solution A and filling carrier is 1:0.5～0.8, the zymotic fluid of described microorganism and the volume ratio of alginate solution are 1:1～2, the volume ratio of described mixed solution B and calcium chloride solution is 1:2～3, and described alginate is sodium alginate.
4. bio-trickling tower packing as claimed in claim 1, it is characterized in that, described soak time is 30min, and the quality solubility of the suspension of described microorganism is 10～30%, the concentration of described alginate solution is 8%, and the concentration of described calcium chloride solution is 2mol/L.
5. bio-trickling tower packing as claimed in claim 1, is characterized in that, the surface attachment gel layer of described bio-trickling tower packing, and gel layer thickness is 1～3mm, the particle diameter of described filling carrier is 5～10cm.
6. bio-trickling tower packing as claimed in claim 1, is characterized in that, described filling carrier is one or several the mixing in bamboo charcoal particle, haydite or polyurethane bead.
7. bio-trickling tower packing as claimed in claim 1, it is characterized in that, the suspension of described microorganism is for utilizing after microbial strains fermented and cultured 24～48h, after 4200rpm/min is centrifugal, discard clear liquid, in precipitation, add sterilized water, be mixed with the microbial suspension of mass concentration 10～30%.
8. bio-trickling tower packing as claimed in claim 1, is characterized in that, the preparation method of described alginate solution is: appropriate alginic acid sodium salt and water are stirred to dissolving completely taking mass volume ratio heating after 8% is mixed in reactor.
9. use bio-trickling tower packing as claimed in claim 1 to prepare a method for bio-trickling filter, it is characterized in that, described method comprises the steps:
Pack bio-trickling tower packing as claimed in claim 1 into bio-trickling filter, filler loading height 1～1.5m, gets final product to obtain bio-trickling filter; Described bio-trickling filter comprises tower body, recirculating nutrient solution spray system, wind system and bio-trickling tower packing; The recirculating nutrient solution formula of described recirculating nutrient solution spray system: NH
4cl 2.64g/L; KH
2pO
41.36g/L; MgSO
47H
2o 0.2g/L; FeSO
47H
2o 0.01g/L; NaCl 5g/L; Circulating fluid flow rate is 20～40L/h.
10. utilize bio-trickling filter as claimed in claim 9 to remove a method for hydrogen sulfide or volatile organic waste gas, it is characterized in that, comprise the steps:
Pass into hydrogen sulfide gas or volatile organic waste gas to bio-trickling filter, start nutrient solution circulated sprinkling filling surface, ventilate and reach even running state after one week; The intake of described hydrogen sulfide gas or volatile organic waste gas is 80～600mg/m
3.
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| CN106693688A (en) * | 2017-02-17 | 2017-05-24 | 盐城工学院 | Bio-trickling device and waste gas treatment system |
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| CN108751411A (en) * | 2018-08-21 | 2018-11-06 | 重庆渝桑环保科技有限公司 | Anaerobe filler |
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| CN114177767A (en) * | 2021-12-06 | 2022-03-15 | 北京北排装备产业有限公司 | Biological deodorization filler and preparation method and application thereof |
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| CN114471141A (en) * | 2021-12-24 | 2022-05-13 | 上海第二工业大学 | Multifunctional polyvinyl alcohol/activated carbon composite biological filler ball and preparation method thereof |
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