CN109809518A - A kind of device of froth flotation method processing waste water containing thallium - Google Patents
A kind of device of froth flotation method processing waste water containing thallium Download PDFInfo
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- CN109809518A CN109809518A CN201910167972.2A CN201910167972A CN109809518A CN 109809518 A CN109809518 A CN 109809518A CN 201910167972 A CN201910167972 A CN 201910167972A CN 109809518 A CN109809518 A CN 109809518A
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- waste water
- thallium
- water containing
- froth flotation
- method processing
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- 229910052716 thallium Inorganic materials 0.000 title claims abstract description 66
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 239000002351 wastewater Substances 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000012545 processing Methods 0.000 title claims abstract description 24
- 238000009291 froth flotation Methods 0.000 title claims abstract description 23
- 239000006260 foam Substances 0.000 claims abstract description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000005187 foaming Methods 0.000 claims abstract description 26
- 238000007664 blowing Methods 0.000 claims abstract description 17
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000004094 surface-active agent Substances 0.000 claims abstract description 15
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 239000000654 additive Substances 0.000 claims description 11
- 230000000996 additive effect Effects 0.000 claims description 10
- 230000001590 oxidative effect Effects 0.000 claims description 10
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- 239000007800 oxidant agent Substances 0.000 claims description 9
- 239000007789 gas Substances 0.000 claims description 7
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 6
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 6
- 239000002518 antifoaming agent Substances 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- 229910052760 oxygen Inorganic materials 0.000 claims 1
- 238000005188 flotation Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 17
- 238000005516 engineering process Methods 0.000 description 11
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical group OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 8
- 238000000926 separation method Methods 0.000 description 6
- 239000002585 base Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000007062 hydrolysis Effects 0.000 description 4
- 238000006460 hydrolysis reaction Methods 0.000 description 4
- 150000002500 ions Chemical class 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000035484 reaction time Effects 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- -1 D-AAO Proteins 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000009388 chemical precipitation Methods 0.000 description 3
- 238000000975 co-precipitation Methods 0.000 description 3
- 238000005342 ion exchange Methods 0.000 description 3
- 238000002955 isolation Methods 0.000 description 3
- 230000001376 precipitating effect Effects 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 229910008649 Tl2O3 Inorganic materials 0.000 description 2
- 230000003213 activating effect Effects 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 230000001965 increasing effect Effects 0.000 description 2
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical group Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 2
- 239000007791 liquid phase Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910021645 metal ion Inorganic materials 0.000 description 2
- 239000002244 precipitate Substances 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- 108010088751 Albumins Proteins 0.000 description 1
- 102000009027 Albumins Human genes 0.000 description 1
- 108010059892 Cellulase Proteins 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 description 1
- SNRUBQQJIBEYMU-UHFFFAOYSA-N Dodecane Natural products CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 description 1
- 241000196324 Embryophyta Species 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 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 description 1
- 241001062009 Indigofera Species 0.000 description 1
- 102000013460 Malate Dehydrogenase Human genes 0.000 description 1
- 108010026217 Malate Dehydrogenase Proteins 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 150000007513 acids Chemical class 0.000 description 1
- 239000011149 active material Substances 0.000 description 1
- AZDRQVAHHNSJOQ-UHFFFAOYSA-N alumane Chemical class [AlH3] AZDRQVAHHNSJOQ-UHFFFAOYSA-N 0.000 description 1
- 108010019077 beta-Amylase Proteins 0.000 description 1
- 239000003093 cationic surfactant Substances 0.000 description 1
- 229940106157 cellulase Drugs 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 230000000536 complexating effect Effects 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- TVZPLCNGKSPOJA-UHFFFAOYSA-N copper zinc Chemical compound [Cu].[Zn] TVZPLCNGKSPOJA-UHFFFAOYSA-N 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 229940088598 enzyme Drugs 0.000 description 1
- 238000007667 floating Methods 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 239000013067 intermediate product Substances 0.000 description 1
- 235000014413 iron hydroxide Nutrition 0.000 description 1
- VCJMYUPGQJHHFU-UHFFFAOYSA-N iron(III) nitrate Inorganic materials [Fe+3].[O-][N+]([O-])=O.[O-][N+]([O-])=O.[O-][N+]([O-])=O VCJMYUPGQJHHFU-UHFFFAOYSA-N 0.000 description 1
- NCNCGGDMXMBVIA-UHFFFAOYSA-L iron(ii) hydroxide Chemical compound [OH-].[OH-].[Fe+2] NCNCGGDMXMBVIA-UHFFFAOYSA-L 0.000 description 1
- 229910052935 jarosite Inorganic materials 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000008267 milk Substances 0.000 description 1
- 210000004080 milk Anatomy 0.000 description 1
- 235000013336 milk Nutrition 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 108090000623 proteins and genes Proteins 0.000 description 1
- 102000004169 proteins and genes Human genes 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 229910021516 thallium(I) hydroxide Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
Landscapes
- Physical Water Treatments (AREA)
Abstract
The present invention provides a kind of devices of froth flotation method processing waste water containing thallium, described device includes: pedestal, air-blowing pump, foaming tower ontology and foam collecting tank, the air-blowing pump is set in pedestal, the foam collecting tank is set to the top of foaming tower ontology, and it is connected by pipeline, it is equipped with waterwater entrance at the middle part of the foaming tower ontology, is equipped with water outlet in the pedestal.Apparatus of the present invention can be continuously by the thallium ion of waste water containing thallium by surfactant and flocculant enrichment, flotation, and the addition of amiable waste water forms continuous foam, and the thallium ion of enrichment is transported to foam collecting tank by foam, realizes the thallium removal of polluted-water.Device is simple, it is high-efficient to remove thallium.
Description
Technical field
The invention belongs to technical field of waste water processing more particularly to a kind of devices of froth flotation method processing waste water containing thallium.
Background technique
Foam separating technology, that is, steel foams isolation technics, in 1915, the technology was applied in mineral floating,
In the fifties, which gradually obtained attention and was widely applied, such as the separation to ion, molecule, colloid, the technology are goed deep into
Research is mainly since metal ion recycling in the solution, to the feasibility progress using the technology to separation of metal ions
Analysis, to establish diffusion-double electrode layer theory.
In the last century 60's mid-term, in the separating treatment for the sewage surface activating agent for washing plant emissions, rate
It first applies foam separating technology and achieves success.Corresponding reality is carried out to the processing of waste water using the technology seventies
It tests, as separated the industrial dye in waste water foam, the technology is biologically being utilized to realize DNAD separation etc..
Foamet using very extensive, obtain protein, albumin, curdled milk using the technology such as in biology
Enzyme, lecithin, beta amylase, cellulase, D-AAO, malic dehydrogenase etc..With science and technology into
Step and industry it is increasingly developed, the problem of environment and resource utilization, is gradually valued by people, the comprehensive benefit of material resources
It is required that increasing, the research range of the isolation technics constantly expands, and industrial application becomes increasingly popular.
Currently, froth flotation method processing thallium report at home or blank, but this technology handles other metals and has not
Understatement road.AA Ke Lie meter Ya Tuofu etc. recycles molybdenum using froth flotation method from waste liquid；Magnitude is worn using froth flotation method
A certain amount of cationic surfactant is added, using 5 in Treatment of Cyanide-containing Wastewater#Sintering glass plate makees gas distributor, in pH value
4.0 between~6.5, obtaining compared with high separating efficiency；Wen Zhenlin etc. removes the copper zinc in simulated wastewater using froth separtion method,
To be saponified aphthenic acids as flotation extractant, two-stage flotation is extracted, the results showed that the rate of recovery of copper can completely remove zinc up to 95%
Ion, residual waste water reach discharge standard；Wang Dejin etc. uses froth flotation method processing initial concentration for the chromate waste water of 20mg/L,
It is 6.5 or so in pH value, surfactant concentration 50mg/L, Fe (NO3)3Amount be 60mg/L, gas flow 400mL/
Under conditions of min, processed waste water meets national secondary waste water discharge standard.
The measure that thallium is administered in waste water containing thallium at present mainly has by adding Cl into waste water containing thallium-、S-, it is jarosite, general
Shandong scholar's indigo plant etc., so that thallium is able to the chemical precipitation method removed in the form of sediment from water body；Using thallium easily by " sponge is adsorbed
The property of body " absorption adds the absorption method that adsorbent reduces the activity rate of thallium and precipitates in polluted-water；In low-temperature alkali
Under conditions of, thallium is oxidized to trivalent from monovalence, to reduce active " the low-temperature alkali oxidizing process " of thallium；And U.S. EPA pushes away
" the activated aluminum method of purification ", " ion-exchange " recommended.Due to the hypertoxicity of thallium, scale removal process requirement is very stringent, commonly
Chemical precipitation method is difficult to meet the requirements, while there may be the risks of secondary pollution；The shortcomings that being handled using absorption method be
Due to the higher cost of adsorbent, regeneration procedures are complicated, and treatment effeciency is not high, and it is useless containing thallium in processing to constrain this method
Application in water；The effect of ion-exchange removal is obvious, but is easy during processing by otheralkali metal in water body
It influences, causes ion-exchange lower to the selectivity of thallium, need frequent operation, to cause processing cost higher.These sides
The generally existing processing cost of method is high, and operating cost is high, easily causes secondary pollution problems.In addition to these problems, there are also industry to contain
Thallium sewage, thallium-containing quantity is very high (> 70mg/L), and the salinity of system is complicated, by common chemical precipitation method, complexing easy to form
System cannot be removed effectively thallium.
Summary of the invention
The separation process of froth flotation method of the invention is mainly the activity having by material surface to be separated, and to
Separate substance has the property that through reaction and the combined formation complex compound of activating agent, works as suction during separation
Attached amount reaches a timing, and as bubble rises, material to be separated progressively disengages solvent, to purify main body liquid or liquid to be separated.
To achieve the purpose of the present invention, the invention adopts the following technical scheme: a kind of froth flotation method handles waste water containing thallium
Device, described device includes: pedestal, air-blowing pump, foaming tower ontology and foam collecting tank, and the air-blowing pump is set in pedestal,
The foam collecting tank is set to the top of foaming tower ontology, and is connected by pipeline, sets in the middle part of the foaming tower ontology
There is waterwater entrance, is equipped with water outlet in the pedestal.
Preferably, at least one sample detection mouth is equipped in the middle and upper part of the foaming tower ontology.
Preferably, the pedestal of the foaming tower be equipped with dosing mouth, by dosing mouth be added surfactant, flocculant,
Acidity regulator or oxidant.
Preferably, the surfactant is neopelex or dodecyl sodium sulfate, additive amount 1%.
Preferably, the flocculant is molysite, additive amount 0.9g/L.
Preferably, the oxidant is hydrogen peroxide, additive amount 0.6%.
Preferably, the acidity regulator is hydrochloric acid or sodium hydroxide, adjusts pH to 9-11.
Preferably, the air-blowing pump is equipped with air-dispersing plate.
Preferably, the gas flow of the air-blowing pump is 250mL/min, starts dwell time in the tower and is greater than 20min.
Preferably, defoaming agent is housed in the foam collecting tank.
The working principle of the invention: steel foams isolation technics is the principle according to adsorption, is bubbled simultaneously shape to solution
At froth bed, the surface reactive material due to adsorbing heavy metal ion is gathered in froth bed, therefore by this froth bed and liquid phase
Main body separation, so that it may achieve the purpose that condensing surfaces active material or purification liquid phase main body.
Specific work process of the invention: waste water containing thallium is entered in foaming tower ontology from tower by waterwater entrance 3, is pumped by air-blowing
5 provide air, gas by the air-dispersing plate 6 on foam tower base be bubbled upwards with waste water counter current contacting；Surfactant, flocculation
Agent, acidity regulator, oxidant enter foaming tower by the dosing mouth 4 of pedestal, and the formation of foam is influenced by its surfactant,
It is formed by bubbling, to assemble and be formed froth bed, bubble is distributed in tower ontology, and foam overflow foaming tower ontology continues
Rising can then be flowed into foam collecting tank 1, chemical reaction occurs by defoaming agent in collecting tank, foam is dissolved as foam solution, obtain
To foam solution in be enriched the thallium of disengaging, and treated that water is then flowed out from the water outlet of tower base 7.
The present invention compared with the existing technology the utility model has the advantages that apparatus of the present invention can continuously pass through the thallium ion of waste water containing thallium
Surfactant and flocculant enrichment, flotation, the addition of amiable waste water, form continuous foam, foam is defeated by the thallium ion of enrichment
It is sent to foam collecting tank, realizes the thallium removal of polluted-water.Device is simple, it is high-efficient to remove thallium.
Detailed description of the invention
Fig. 1 is the structural schematic diagram (description of symbols: 1 in figure that froth flotation method of the present invention handles waste water containing thallium device
For foam collecting tank；2 be sample detection mouth；3 be waterwater entrance；4 be dosing mouth；5 pump for air-blowing；6 be air-dispersing plate；7 be water outlet
Mouthful).
Specific embodiment
As shown in Fig. 1, the device of froth flotation method of the invention processing waste water containing thallium, described device include: pedestal (figure
In be not shown), air-blowing pump 5, foaming tower ontology and foam collecting tank 1, the air-blowing pump 5 is set in pedestal, and the foam is collected
Slot 1 is set to the top of foaming tower, and is connected by pipeline, waterwater entrance 3 is equipped at the middle part of the foaming tower, at the bottom
Seat is equipped with water outlet 7.
In the present embodiment, at least one sample detection mouth 2 is equipped in the middle and upper part of the foaming tower.
In the present embodiment, it is equipped with dosing mouth 4 in the pedestal of the foaming tower, surfactant, wadding are added by dosing mouth 4
Solidifying agent, acidity regulator or oxidant.
In the present embodiment, the surfactant is neopelex or dodecyl sodium sulfate, and additive amount is
1%.
In the present embodiment, the flocculant is molysite, additive amount 0.9g/L.
In the present embodiment, the oxidant is hydrogen peroxide, additive amount 0.6%.
In the present embodiment, the acidity regulator is hydrochloric acid or sodium hydroxide, adjusts pH to 9-11.
In the present embodiment, the air-blowing pump is equipped with air-dispersing plate 6.
In the present embodiment, the gas flow of the air-blowing pump is 250mL/min, starts dwell time in the tower and is greater than 20min.
In the present embodiment, defoaming agent is housed in the foam collecting tank.
The device specific work process of froth flotation method processing waste water containing thallium of the present invention: waste water containing thallium is from tower by waterwater entrance
3 enter in foaming tower, provide air by air-blowing pump 5, gas is bubbled inverse with waste water upwards by the air-dispersing plate 6 on foam tower base
Stream contact；Surfactant, flocculant, acidity regulator, oxidant enter foaming tower, the shape of foam by the dosing mouth 4 of pedestal
The influence of Cheng Shouqi surfactant, is formed by bubbling, to assemble and be formed froth bed, bubble is distributed in tower, bubble
Foam, which overflows foaming tower, which continues rising, can then be flowed into foam collecting tank 1, and chemical reaction occurs by defoaming agent in collecting tank 1 will bubble
Foam is dissolved as foam solution, and the thallium of disengaging is enriched in obtained foam solution, and treated water is then flowed from the water outlet of tower base 7
Out.
Embodiment 2
Surfactant is 10% dodecyl sodium sulfate, additive amount 5ml, flocculant 180mg/L in the present embodiment
Fe (NO3)3Additive amount is 5ml, the Tl in pH value > 7, in processed waste water3+Concentration drastically reduces, and separating effect is significantly
Enhancing；In pH=12, separating effect highest, removal rate is up to 95%.This may be due to for Tl3+, in 7 < pH < 12,
Fe(NO3)3Play the hydrolysis intermediate product [Fe (OH) of coagulation2(H2O)5]+、[Fe(OH)(H2O)5]2+And Fe (OH)3It is heavy
The formation in shallow lake increases with the raising of pH, the Fe (OH) on the one hand formed3Precipitate more and more, Fe (OH)3Adsorb Tl3+'s
Ability is also increasingly stronger；On the other hand the increase that precipitating generates, to make Tl3+Removal be greatly improved；When pH rises to
When 12, formed Fe (OH)3Amount it is maximum, to Tl (OH)4-Suction-operated it is most strong, so that thallic removal effect is best.And
For Tl+, in pH < 10, mainly with Tl+Based on, when pH > 10 based on TlOH；In pH < 10, Tl+Very strong, the Fe of water solubility
(NO3)3Hydrolyzing a small amount of iron hydroxide generated has very faint adsorption coprecipitation effect to it, increases with pH, Fe (OH)3Increase
Add, to Tl+Adsorption coprecipitation effect be slightly increased, there is no significant change, so its removal effect is bad；pH≥
When 10.0, Tl+More and more conversion Tl2O3For precipitating, Fe (OH)3To Tl2O3Adsorption coprecipitation act on enhancing, the removal of thallium
Rate significantly increases.
3 the present embodiment of embodiment investigates influence of the different pH value to the separating effect of thallium
The pH value of water body in foaming tower is adjusted to 1,5,9 respectively, adds 5ml surfactant sodium dodecyl base sodium sulfonate,
Fe (the NO of 180mg/L3)3Dosage is respectively 0,5ml, investigates influence of the different pH value to the separating effect of thallium.Fe(OH)3Meeting
A series of hydrolysis occur, a variety of hydrolysates are formed, and convert to colloidal attitude, it is demonstrated experimentally that the Fe in alkaline environment
(OH)3Precipitating can be directly generated, simultaneously, the Tl in water3+Also hydrolysis can occur, generate Tl (OH)3Indissoluble object, simultaneously
With suction-operated, Tl in water3+And its hydrolysate is adsorbed ion precipitation by hydrolysis, catching principle by net will be from
Son precipitating cleaning Tl3+.From the point of view of above-mentioned analysis, flocculant becomes apparent from the effect of removing thallium with the synergy for adjusting pH value.
4 the present embodiment of embodiment investigates H2O2Influence to the separating effect of thallium
It is respectively 1,5,9,11 that the pH value of water body adjusts pH respectively in foaming tower, and 10% dodecyl sodium sulfate dosage is
Fe (the NO of 5ml, 180mg/L3)3Dosage is 5ml, 30%H2O2Dosage is 0,3ml, investigates H2O2To the separating effect of thallium
It influences, after adding hydrogen peroxide, the waste water thallium concentration handled under each pH value condition all be decreased significantly, when pH value is 1-9, with
The residual concentration of the raising of pH, thallium is reducing, and in pH=9, thallium concentration is only 0.03mg/L, and removal rate is worked as up to 99.8%
When pH value is 11, the residual concentration of thallium is slightly elevated.While due to hydrogen peroxide there is faintly acid can voluntarily decompose in water
Its own is with oxidisability, when separating liquid is under alkaline environment, increases its concentration using ionization, thus better oxidation removal
Pollutant in water body.But ionization rate is too fast when excessive, and increases decomposition.
5 the present embodiment of embodiment investigates influence of the reaction time to the separating effect of thallium
It is respectively 1,5,9,11 that the pH value of water body adjusts pH respectively in foaming tower, and 10% dodecyl sodium sulfate dosage is
Fe (the NO of 5ml, 180mg/L3)3Dosage is 0,5ml, 30%H2O2Dosage is 0,3ml, investigates the reaction time and divides thallium
Influence from effect, as the reaction time increases, the concentration of thallium sharply declines in water, when after a certain time, thallium is dense in water
Spend basicly stable constant, but at various ph values, reaching thallium concentration, to stablize the constant time different, i.e., as pH value increases, instead
The residence time is answered more to shift to an earlier date, in acid condition, substantially in 50min, the concentration holding of thallium is stablized constant in water, and in alkalinity
Under the conditions of, when 20min, the concentration of thallium has just kept stablizing constant in water, illustrate reaction time at least 20min with
On.Simultaneously it can also be seen that pH value is bigger, the concentration of thallium is lower.PH is being adjusted, under the conditions of adding flocculant, oxidant, thallium
Removal effect is best, and the rate of going out of highest thallium is 99.8%.
The embodiments described above only express several embodiments of the present invention, and the description thereof is more specific and detailed, but simultaneously
It cannot therefore be construed as limiting the scope of the patent.It should be pointed out that coming for those of ordinary skill in the art
It says, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to protection of the invention
Range.Therefore, the scope of protection of the patent of the invention shall be subject to the appended claims.
Claims (10)
1. a kind of device of froth flotation method processing waste water containing thallium, which is characterized in that described device includes: pedestal, air-blowing pump, bubble
Foam tower ontology and foam collecting tank, the air-blowing pump are set in pedestal, and the foam collecting tank is set to the top of foaming tower ontology,
And be connected by pipeline, it is equipped with waterwater entrance at the middle part of the foaming tower ontology, is equipped with water outlet in the pedestal.
2. the device of froth flotation method processing waste water containing thallium as described in claim 1, which is characterized in that in the foaming tower sheet
The middle and upper part of body is equipped at least one sample detection mouth.
3. the device of froth flotation method processing waste water containing thallium as described in claim 1, which is characterized in that in the foaming tower sheet
The pedestal of body is equipped with dosing mouth, and surfactant, flocculant, acidity regulator or oxidant is added by dosing mouth.
4. the device of froth flotation method processing waste water containing thallium as claimed in claim 3, which is characterized in that the surfactant
For neopelex or dodecyl sodium sulfate, additive amount 1%.
5. the device of froth flotation method processing waste water containing thallium as claimed in claim 3, which is characterized in that the flocculant is iron
Salt, additive amount 0.9g/L.
6. the device of froth flotation method processing waste water containing thallium as claimed in claim 3, which is characterized in that the oxidant is double
Oxygen water, additive amount 0.6%.
7. the device of froth flotation method processing waste water containing thallium as claimed in claim 3, which is characterized in that the acidity regulator
For hydrochloric acid or sodium hydroxide, pH to 9-11 is adjusted.
8. the device of froth flotation method processing waste water containing thallium as described in claim 1, which is characterized in that set on the air-blowing pump
There is air-dispersing plate.
9. the device of froth flotation method processing waste water containing thallium as described in claim 1, which is characterized in that the gas of the air-blowing pump
Body flow is 250mL/min, starts dwell time in the tower and is greater than 20min.
10. the device of froth flotation method processing waste water containing thallium as described in claim 1, which is characterized in that the foam is collected
Defoaming agent is housed in slot.
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| CN113387424A (en) * | 2021-07-20 | 2021-09-14 | 西安交通大学 | Sewage treatment device |
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Application publication date: 20190528 |