CN109647857A - A kind of processing method of industrial waste salt - Google Patents
A kind of processing method of industrial waste salt Download PDFInfo
- Publication number
- CN109647857A CN109647857A CN201811590668.0A CN201811590668A CN109647857A CN 109647857 A CN109647857 A CN 109647857A CN 201811590668 A CN201811590668 A CN 201811590668A CN 109647857 A CN109647857 A CN 109647857A
- Authority
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- China
- Prior art keywords
- brine waste
- advanced oxidation
- flyash
- waste
- added
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 150000003839 salts Chemical class 0.000 title claims abstract description 62
- 239000002440 industrial waste Substances 0.000 title claims abstract description 8
- 238000003672 processing method Methods 0.000 title claims abstract description 7
- 239000002699 waste material Substances 0.000 claims abstract description 33
- 239000010881 fly ash Substances 0.000 claims abstract description 26
- 239000012267 brine Substances 0.000 claims abstract description 24
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims abstract description 24
- 230000003647 oxidation Effects 0.000 claims abstract description 14
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 14
- 238000002485 combustion reaction Methods 0.000 claims abstract description 11
- 238000000227 grinding Methods 0.000 claims abstract description 3
- 238000003756 stirring Methods 0.000 claims abstract description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 claims description 2
- 229910000359 iron(II) sulfate Inorganic materials 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 abstract description 13
- 230000000694 effects Effects 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 5
- 238000000354 decomposition reaction Methods 0.000 abstract description 3
- 150000002894 organic compounds Chemical class 0.000 abstract description 3
- 150000003384 small molecules Chemical class 0.000 abstract description 3
- 229910000314 transition metal oxide Inorganic materials 0.000 abstract description 3
- 238000002203 pretreatment Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 abstract description 2
- 239000002351 wastewater Substances 0.000 description 23
- 239000000575 pesticide Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- FRASJONUBLZVQX-UHFFFAOYSA-N 1,4-naphthoquinone Chemical compound C1=CC=C2C(=O)C=CC(=O)C2=C1 FRASJONUBLZVQX-UHFFFAOYSA-N 0.000 description 2
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 239000002956 ash Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 235000017281 sodium acetate Nutrition 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000002910 solid waste Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 231100000331 toxic Toxicity 0.000 description 1
- 230000002588 toxic effect Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B09—DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
- B09B—DISPOSAL OF SOLID WASTE NOT OTHERWISE PROVIDED FOR
- B09B3/00—Destroying solid waste or transforming solid waste into something useful or harmless
- B09B3/40—Destroying solid waste or transforming solid waste into something useful or harmless involving thermal treatment, e.g. evaporation
Landscapes
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The invention discloses a kind of processing method of industrial waste salt, include the following steps: to carry out advanced oxidation pretreatment to brine waste, pretreated brine waste is harrowed and is done, then flyash is added into abraum salt, and grinding stirs evenly, and is sent into high-temp combustion in tube furnace.Method and process of the invention is succinct, easy to operate, so that organic compound combustion is abundant, improves organic matter removal effect, reduces burning required temperature, saves processing cost.The present invention converts small molecule for the organic matter of brine waste by advanced oxidation pretreatment method, so that organic matter after burning is more sufficiently completely；Flyash is added later, transition metal oxide promotes organic matter decomposition combustion under the high temperature conditions in flyash, not only increases the removal efficiency of organic matter, and reduce the ignition temperature in furnace, saves processing cost.
Description
Technical field
The invention belongs to field of solid waste disposal, more particularly to a kind of processing method of industrial waste salt.
Background technique
China is pesticide producing big country, and raw medicine yield ranks the first in the world.Pesticide producing abraum salt is most important as pesticide
Pollutant has the characteristics that big toxicity, complex chemical composition, recalcitrant substance are more, seriously polluted, if arranging without effective improvement
It applies, production industrial waste salt will pollute big gas and water and soil environment, and then influence human health.Caused by pesticide producing
" three wastes " annual emissions reach more than one hundred million tons, handling rate is still in lower level.Therefore, " three wastes " caused by pesticide producing are handled
Principal contradiction as the development of China's pesticide industry.
Incineration disposal technology has the characteristics that minimizing, innoxious quick, obvious, and abraum salt, waste residue burning disposal not only may be used
With the toxic organics matter effectively destroyed in salt slag, and it can will burn the heat generated and utilize.But it burns
May there are problems that inorganic salts melting in the process, high-temperature refractory is caused not to be available, and chemical industry abraum salt waste residue burns
Afterwards, in the flue gas of generation may entrainment melting inorganic salts can in processing equipment below crystallisation by cooling, to follow-up equipment transport
Row impacts；There is also the organic compound combustion in abraum salt is incomplete, therefore chemical industry abraum salt waste residue is treated as chemical industry
In development the problem of urgent need to resolve.
Summary of the invention
Goal of the invention: in view of the problems of the existing technology, the present invention provides a kind of processing method of industrial waste salt, the party
The organic matter of brine waste is converted small molecule by method, so that organic matter after burning is more sufficiently completely；Flyash is added later,
Transition metal oxide promotes organic matter decomposition combustion under the high temperature conditions in flyash, not only increases the removal effect of organic matter
Rate, and the ignition temperature in furnace is reduced, save processing cost.
Technical solution: to achieve the goals above, a kind of processing method of industrial waste salt as described herein, including it is as follows
Step: advanced oxidation pretreatment is carried out to brine waste, pretreated brine waste is harrowed and is done, then fine coal is added into abraum salt
Ash, grinding stir evenly, high-temp combustion.
Wherein, described that advanced oxidation pretreatment is carried out to brine waste for H is added to brine waste2O2、FeSO4, H2O2It throws
Initial concentration after adding is 200-600mM, c (H2O2)/c(Fe2+) molar ratio be 10:1~40:1, it is initial to add rear brine waste
PH value is 4.0~6.0.As the preferred c (H2O2)/c(Fe2+) molar ratio be 20:1, initial pH value 5.0.
Wherein, described that advanced oxidation pretreatment is carried out to brine waste for H is added to brine waste2O2And TiO2, H2O2It throws
Adding rear initial concentration is 250~400mM, TiO2Add rear initial concentration be 0.01~0.03g/L, initial pH value be 4.0~
6.0.As the preferred H2O2Concentration is 352.92mM, TiO2Concentration is 0.022g/L, initial pH value 5.2.
Wherein, the flyash additive amount is 10%~30% of abraum salt quality after rake is dry.Preferably, flyash adds
Amount is 20%.
Wherein, the high-temp combustion is to be sent into burning in tube furnace, and ignition temperature is 450~1000 DEG C, and burning time is
10~120min.Preferably, ignition temperature is 800 DEG C, burning time 60min.
The utility model has the advantages that compared with prior art, the present invention has the effect that
The present invention converts small molecule for the organic matter of brine waste by advanced oxidation pretreatment method, so that organic matter
After burning is more sufficiently completely；Flyash is added later, transition metal oxide promotes organic under the high temperature conditions in flyash
Object decomposition combustion, not only increases the removal efficiency of organic matter, and reduces the ignition temperature in furnace, saves processing cost.
Integrated artistic of the present invention is succinct, easy to operate, and organic compound combustion is abundant, and removal effect improves, and reduces needed for burning
Temperature saves processing cost.
Detailed description of the invention
Fig. 1 is pretreated abraum salt burning TG/DTG curve graph；
Fig. 2 is not pretreated abraum salt burning TG/DTG curve graph；
Fig. 3 is the quality diagram of waste residue after waste salt dregs and the catalysis burning of 10% tret flyash；
Fig. 4 is the quality diagram of different burn time duration waste residues；
Fig. 5 is the quality diagram of waste residue after the catalysis burning of Different adding amount flyash.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
Brine waste in embodiment, wherein sodium acetate concentration is 5.9g/L, and 1,4-naphthoquinone concentration is 0.1g/L, dimethyl
Sulfoxide concentration is 1.18% (volume fraction).
Embodiment 1
H is added into waste water2O2Initial concentration after adding is 294.1mM, and FeSO is added4, keep c (H2O2)/c(Fe2+)
Molar ratio is 40:1, and waste water is harrowed and done, 5g abraum salt weighed, by flyash and abraum salt according to mass ratio 15% by initial pH value 6.0
Ratio be stirred uniformly, ground 60 mesh.Burning 120 minutes in tube furnace are put into, as shown in Figure 1, heating per minute
10 DEG C, 981.93 DEG C are warming up to, abraum salt Mass lost 50.03%.
Embodiment 2
It is identical as 1 scheme of embodiment, advanced oxidation pretreatment is carried out without to brine waste, waste water is harrowed and is done, is weighed
Flyash and abraum salt are stirred uniformly, ground 60 mesh by 5g abraum salt according to the ratio of mass ratio 15%.It is put into tube furnace
Interior burning 120 minutes, as a result as shown in Fig. 2, 10 DEG C of heating per minute, is warming up to 981.93 DEG C, abraum salt quality is only reduced
45.92%, illustrate brine waste after pretreatment, preferably removal effect can be reached.
Embodiment 3
H is added into waste water2O2Initial concentration after adding is 588.2mM, and FeSO is added4, keep c (H2O2)/c(Fe2+)
Molar ratio is 20:1, and waste water is harrowed and done, 5g abraum salt weighed, by flyash and abraum salt according to mass ratio 10% by initial pH value 5.0
Ratio be stirred uniformly, ground 60 mesh.Be put into tube furnace, 800 DEG C burn 60 minutes, as a result as shown in figure 3,
Abraum salt Mass lost 51.77%.
Embodiment 4
H is added into waste water2O2Initial concentration after adding is 588.2mM, and FeSO is added4, keep c (H2O2)/c(Fe2+)
Molar ratio is 20:1, and waste water is harrowed and done, weighed 5g abraum salt, flyash is not added, by ground 60 mesh of abraum salt by initial pH value 5.0
Sieve.It is put into tube furnace, burns 60 minutes at 800 DEG C, as a result as shown in figure 3, abraum salt quality only reduces 48.06%.
Embodiment 5
H is added into waste water2O2Initial concentration after adding is 352.92mM, TiO2Dosage is 0.022g/L, initial pH
Value is 5.2.Waste water rake is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred uniformly according to the ratio of mass ratio 25%,
Ground 60 mesh, is put into tube furnace.As a result as shown in figure 4, burning 10 minutes at 600 DEG C, abraum salt Mass lost
After 44.17%, 30 minutes, abraum salt Mass lost 47.81%, after sixty minutes, abraum salt Mass lost 49.40%.
Embodiment 6
H is added into waste water2O2Initial concentration after adding is 352.92mM, TiO2Dosage is 0.022g/L, initial pH
Value is 5.2.Waste water rake is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred uniformly according to the ratio of mass ratio 25%,
Ground 60 mesh, is put into tube furnace.As a result as shown in figure 4, burning 10 minutes at 800 DEG C, abraum salt Mass lost
After 51.65%, 30 minutes, abraum salt Mass lost 53.46%, after sixty minutes, abraum salt Mass lost 59.68%.
Embodiment 7
H is added into waste water2O2Initial concentration after adding is 352.92mM, TiO2Dosage is 0.022g/L, initial pH
Value is 5.2.Waste water rake is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred uniformly according to the ratio of mass ratio 25%,
Ground 60 mesh, is put into tube furnace.As a result as shown in figure 4, burning 10 minutes at 900 DEG C, abraum salt Mass lost
After 58.47%, 30 minutes, abraum salt Mass lost 60.40%, after sixty minutes, abraum salt Mass lost 65.23%, when illustrating burning
Between be 60 minutes when, organic matter removal effect is more excellent.
Embodiment 8
H is added into waste water2O2394.10mM, TiO2Dosage is 0.020g/L, initial pH value 5.0.Waste water is harrowed
It is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred according to 10%, 15%, 20%, 25%, 30% ratio of mass ratio
Even, ground 60 mesh is put into tube furnace, is burnt 90 minutes under 900 DEG C of high temperature, as a result as shown in figure 5, abraum salt quality
Reducing is respectively 52.43%, 55.34%, 59.81%, 55.87%, 54.98%, is illustrated organic when flyash tret is 20%
Object removal effect is optimal.
Embodiment 9
H is added into waste water2O2Initial concentration after adding is 200mM, and FeSO is added4, keep c (H2O2)/c(Fe2+) rub
, than being 40:1, initial pH value 4.0 is dry by waste water rake for you, 5g abraum salt is weighed, by flyash and abraum salt according to mass ratio 10%
Ratio is stirred uniformly, ground 60 mesh.It is put into burning 120 minutes in tube furnace.
Embodiment 10
H is added into waste water2O2Initial concentration after adding is 200mM, and FeSO is added4, keep c (H2O2)/c(Fe2+) rub
, than being 10:1, initial pH value 6.0 is dry by waste water rake for you, 5g abraum salt is weighed, by flyash and abraum salt according to mass ratio 30%
Ratio is stirred uniformly, ground 60 mesh.Being put into tubular type in-furnace temperature is 1000 DEG C of burnings 10 minutes.
Embodiment 11
H is added into waste water2O2Initial concentration after adding is 250mM, TiO2Dosage is 0.01g/L, and initial pH value is
4.Waste water rake is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred uniformly according to the ratio of mass ratio 10%, it is ground
60 meshes, are put into tube furnace, are put into burning 120 minutes in tube furnace.
Embodiment 12
H is added into waste water2O2Initial concentration after adding is 400mM, TiO2Dosage is 0.03g/L, and initial pH value is
6.Waste water rake is dry, 5g abraum salt is weighed, flyash and abraum salt are stirred uniformly according to the ratio of mass ratio 30%, it is ground
60 meshes, are put into tube furnace, are put into burning 120 minutes in tube furnace.
Claims (5)
1. a kind of processing method of industrial waste salt, which comprises the steps of: it is pre- to carry out advanced oxidation to brine waste
Pretreated brine waste is harrowed and is done, then flyash is added into abraum salt by processing, and grinding stirs evenly, high-temp combustion.
2. according to claim 1 carry out advanced oxidation pretreatment to brine waste, which is characterized in that described useless to saliferous
It is that H is added to brine waste that water, which carries out advanced oxidation pretreatment,2O2、FeSO4, H2O2Initial concentration after adding is 200-600mM,
c(H2O2)/c(Fe2+) molar ratio be 10:1~40:1, add rear brine waste initial pH value be 4.0~6.0.
3. according to claim 1 carry out advanced oxidation pretreatment to brine waste, which is characterized in that described useless to saliferous
It is that H is added to brine waste that water, which carries out advanced oxidation pretreatment,2O2And TiO2, and irradiated with 254nm length ultraviolet light source, H2O2It throws
Adding rear initial concentration is 250~400mM, TiO2Add rear initial concentration be 0.01~0.03g/L, initial pH value be 4.0~
6.0。
4. according to claim 1 carry out advanced oxidation pretreatment to brine waste, which is characterized in that the flyash adds
Dosage is preferably harrow dry rear abraum salt quality 10%~30%.
5. according to claim 1 carry out advanced oxidation pretreatment to brine waste, which is characterized in that the high-temp combustion
It burns to be sent into tube furnace, ignition temperature is 450~1000 DEG C, and burning time is 10~120min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590668.0A CN109647857A (en) | 2018-12-25 | 2018-12-25 | A kind of processing method of industrial waste salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811590668.0A CN109647857A (en) | 2018-12-25 | 2018-12-25 | A kind of processing method of industrial waste salt |
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| Publication Number | Publication Date |
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| CN109647857A true CN109647857A (en) | 2019-04-19 |
Family
ID=66116108
Family Applications (1)
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| CN201811590668.0A Pending CN109647857A (en) | 2018-12-25 | 2018-12-25 | A kind of processing method of industrial waste salt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113233477A (en) * | 2021-05-19 | 2021-08-10 | 重庆商勤禹水环境科技有限公司 | Method for recovering industrial-grade sodium chloride by using industrial waste salt |
| CN113894136A (en) * | 2020-11-19 | 2022-01-07 | 上海深健环保科技有限公司 | Method for removing TOC (total organic carbon) in industrial solid waste salt |
| CN114985429A (en) * | 2022-05-23 | 2022-09-02 | 中国科学院生态环境研究中心 | Low-temperature aerobic pyrolysis purification recycling method for waste salt |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113894136A (en) * | 2020-11-19 | 2022-01-07 | 上海深健环保科技有限公司 | Method for removing TOC (total organic carbon) in industrial solid waste salt |
| CN113233477A (en) * | 2021-05-19 | 2021-08-10 | 重庆商勤禹水环境科技有限公司 | Method for recovering industrial-grade sodium chloride by using industrial waste salt |
| CN114985429A (en) * | 2022-05-23 | 2022-09-02 | 中国科学院生态环境研究中心 | Low-temperature aerobic pyrolysis purification recycling method for waste salt |
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Application publication date: 20190419 |
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