CN109574343A - The demulsification processing method of oily wastewater solar energy STEP - Google Patents
The demulsification processing method of oily wastewater solar energy STEP Download PDFInfo
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- CN109574343A CN109574343A CN201910051394.6A CN201910051394A CN109574343A CN 109574343 A CN109574343 A CN 109574343A CN 201910051394 A CN201910051394 A CN 201910051394A CN 109574343 A CN109574343 A CN 109574343A
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- oily wastewater
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- 239000002351 wastewater Substances 0.000 title claims abstract description 22
- 238000003672 processing method Methods 0.000 title claims abstract description 11
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 51
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 28
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims abstract description 28
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims abstract description 28
- TWRXJAOTZQYOKJ-UHFFFAOYSA-L Magnesium chloride Chemical compound [Mg+2].[Cl-].[Cl-] TWRXJAOTZQYOKJ-UHFFFAOYSA-L 0.000 claims abstract description 26
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 17
- 235000002639 sodium chloride Nutrition 0.000 claims abstract description 17
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 14
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims abstract description 14
- 239000001110 calcium chloride Substances 0.000 claims abstract description 14
- 229910001628 calcium chloride Inorganic materials 0.000 claims abstract description 14
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 14
- 239000011780 sodium chloride Substances 0.000 claims abstract description 14
- 229910052938 sodium sulfate Inorganic materials 0.000 claims abstract description 14
- 235000011152 sodium sulphate Nutrition 0.000 claims abstract description 14
- 229910001629 magnesium chloride Inorganic materials 0.000 claims abstract description 13
- 239000008367 deionised water Substances 0.000 claims abstract description 7
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 7
- 239000003921 oil Substances 0.000 claims description 47
- 239000000839 emulsion Substances 0.000 claims description 15
- 239000000203 mixture Substances 0.000 claims description 9
- 238000012545 processing Methods 0.000 claims description 9
- 238000006243 chemical reaction Methods 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 5
- 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 claims description 4
- 239000003513 alkali Substances 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000005070 sampling Methods 0.000 claims description 4
- 239000011734 sodium Substances 0.000 claims description 4
- 229910052708 sodium Inorganic materials 0.000 claims description 4
- WBIQQQGBSDOWNP-UHFFFAOYSA-N 2-dodecylbenzenesulfonic acid Chemical compound CCCCCCCCCCCCC1=CC=CC=C1S(O)(=O)=O WBIQQQGBSDOWNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 239000010779 crude oil Substances 0.000 claims description 3
- 229940060296 dodecylbenzenesulfonic acid Drugs 0.000 claims description 3
- 230000005518 electrochemistry Effects 0.000 claims description 3
- 238000004945 emulsification Methods 0.000 claims description 3
- 230000001804 emulsifying effect Effects 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 229910021420 polycrystalline silicon Inorganic materials 0.000 claims description 3
- 150000003839 salts Chemical class 0.000 claims description 3
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims 1
- 150000008107 benzenesulfonic acids Chemical class 0.000 claims 1
- 238000005660 chlorination reaction Methods 0.000 claims 1
- 239000011777 magnesium Substances 0.000 claims 1
- 229910052749 magnesium Inorganic materials 0.000 claims 1
- HFQQZARZPUDIFP-UHFFFAOYSA-M sodium;2-dodecylbenzenesulfonate Chemical compound [Na+].CCCCCCCCCCCCC1=CC=CC=C1S([O-])(=O)=O HFQQZARZPUDIFP-UHFFFAOYSA-M 0.000 claims 1
- 238000005516 engineering process Methods 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 6
- -1 neopelex Polymers 0.000 abstract description 5
- 238000002360 preparation method Methods 0.000 abstract description 3
- 235000017550 sodium carbonate Nutrition 0.000 abstract description 2
- 235000011121 sodium hydroxide Nutrition 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 6
- 230000008859 change Effects 0.000 description 4
- 238000004581 coalescence Methods 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 239000011206 ternary composite Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 230000001681 protective effect Effects 0.000 description 2
- 230000001603 reducing effect Effects 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 239000004094 surface-active agent Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000003809 water extraction Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000011953 bioanalysis Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 239000006071 cream Substances 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000000518 rheometry Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 230000000192 social effect Effects 0.000 description 1
- 238000002798 spectrophotometry method Methods 0.000 description 1
- 239000002569 water oil cream Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/46—Treatment of water, waste water, or sewage by electrochemical methods
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/30—Organic compounds
- C02F2101/32—Hydrocarbons, e.g. oil
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/10—Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2201/00—Apparatus for treatment of water, waste water or sewage
- C02F2201/009—Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
-
- 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
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/20—Controlling water pollution; Waste water treatment
- Y02A20/208—Off-grid powered water treatment
- Y02A20/212—Solar-powered wastewater sewage treatment, e.g. spray evaporation
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
A kind of demulsification processing method of oily wastewater solar energy STEP, it is related to chemical industry method and technology field, it includes deionized water, neopelex, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride, neopelex, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, the content of calcium chloride and magnesium chloride is respectively 0.9~1.1L, 0.15~0.17g/L, 230~250ppm, 0.9~1.1g/L, 0.95~1.0g/L, 0.9~0.1.1g/L, 0.05~0.07g/L, 2.5~2.9g/L, 0.15~0.19g/L and 0.12~0.16g/L.The demulsification processing method preparation process of this oily wastewater solar energy STEP is simple, easy to operate and safe operation, and low production cost is reusable, is suitable for industrialized production.
Description
Technical field:
The present invention relates to chemical industry method and technology fields, and in particular to the demulsification processing method of oily wastewater solar energy STEP.
Background technique:
So far from the 60's of 20th century, grand celebration is always by the important tests place as oil development and scientific research, with
The continuous innovation of science and technology, tertiary oil recovery technology are also constantly deepened in the application of Daqing oil field, especially ternary composite oil-displacing
Although the development and application of technology, oil recovery factor significantly improve, but the processing difficulty of oil-containing recovered water is consequently increased.Especially
Ternary composite flooding water extraction, due to keeping recovered water viscosity big containing components such as alkali, polymer and surfactants, oil content increases
Add, oil bead diameter becomes smaller, and oil-water emulsion is serious, oil droplet is poly- simultaneously and the problems such as separating difficulty occurs, to the improvement of oil field extracted water
Increase difficulty.In practical applications, alkaline surfactant polymer flooding oil-field technology significantly improves oil recovery rate, has important value.But
Its precondition that can be run well is to guarantee that the processing systems such as its matched ground sewage can operate normally, and therefore, is broken
Cream becomes a problem in the urgent need to address.
Current existing breaking method such as adds demulsifier, electrochemical process, membrane filter method, bioanalysis.Although it is above this
The certain methods that a little methods have proved to be effectively, but are directed to often have pollution environment, technique cost high and demulsification
Agent is expensive, energy-output ratio is big or is unfavorable for the drawbacks such as industrial production application.Therefore, economical and practical, environmentally protective oil is studied
Water separating method has important social effect.
Summary of the invention:
In place of overcoming above-mentioned the shortcomings of the prior art, and provide a kind of oily wastewater solar energy
The demulsification processing method of STEP, it utilizes solar energy, reaches environmentally protective, the high purpose of degradation rate.
The technical solution adopted by the present invention are as follows: the demulsification processing method of oily wastewater solar energy STEP, including it is deionized
Water, neopelex, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride
And magnesium chloride, neopelex, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate,
The content of calcium chloride and magnesium chloride be respectively 0.9~1.1L, 0.15~0.17g/L, 230~250ppm, 0.9~1.1g/L,
0.95~1.0g/L, 0.9~0.1.1g/L, 0.05~0.07g/L, 2.5~2.9g/L, 0.15~0.19g/L and 0.12~
0.16g/L。
Method and step is as follows:
1) neopelex, polyacrylamide and sodium hydroxide, dodecyl benzene sulfonic acid are added in deionized water
Sodium, polyacrylamide and sodium hydroxide dissolve in water forms solution system, and wherein neopelex is living as surface
Property agent, polyacrylamide is as polymer, and sodium hydroxide is as alkali；
2) sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are added in solution system, forms mixing
Object, wherein sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are as salt；
3) crude oil is added in mixture, forms mixture solution；
4) using FLUKO high-speed digital electrical blender under conditions of 2500~3500 revs/min, by the mixture in step 3)
Emulsifying soln 15~25 minutes, emulsion is formed after emulsification；
5) 16~20 hours at a temperature of the emulsion in step 4) being stored in 15~25 DEG C；
6) upper layer oil slick is removed, oil-water stable emulsion of sub-cloud gives over to spare；
7) 125-WHg light irradiation oily wastewater, the photochemistry that 125-W Hg lamp is radiated as ultraviolet are used in vertical direction
Energy；
8) constant voltage of 2~4V can be generated by polycrystalline silicon solar panel conversion solar, constant voltage is as electrochemistry
Energy；
9) heat chemistry energy is generated by parabolic solar concentrator (Φ 1.5M) equipment, heats oily wastewater, temperature range
For 20~80oC；
10) total time is 2 hours, and per half an hour sampling and measuring observes oil removal rate and demulsification；
11) work of solar energy-thermo-electrically coupling driving processing oil-contaminated water of oil field is completed.
The beneficial effects of the present invention are: the energy used be sustainable use solar energy and its demulsification technology to ring
Border is without secondary pollution, we pass through the micro-variations such as viscosity, rheological characteristic and Zeta potential to emulsion during demulsification
And oil removal rate intuitively changes to check demulsification.The preparation process of solar energy STEP system is simple, easy to operate and operation is pacified
Entirely, low production cost is reusable, is suitable for industrialized production.
Specific embodiment:
The demulsification processing method of this oily wastewater solar energy STEP, including deionized water, neopelex, polypropylene
Amide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride, neopelex,
Polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride content be respectively
0.9~1.1L, 0.15~0.17g/L, 230~250ppm, 0.9~1.1g/L, 0.95~1.0g/L, 0.9~0.1.1g/L,
0.05~0.07g/L, 2.5~2.9g/L, 0.15~0.19g/L and 0.12~0.16g/L.
Method and step is as follows:
1) neopelex, polyacrylamide and sodium hydroxide, dodecyl benzene sulfonic acid are added in deionized water
Sodium, polyacrylamide and sodium hydroxide dissolve in water forms solution system, and wherein neopelex is living as surface
Property agent, polyacrylamide is as polymer, and sodium hydroxide is as alkali；
2) sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are added in solution system, forms mixing
Object, wherein sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are as salt；
3) crude oil is added in mixture, forms mixture solution；
4) using FLUKO high-speed digital electrical blender under conditions of 2500~3500 revs/min, by the mixture in step 3)
Emulsifying soln 15~25 minutes, emulsion is formed after emulsification；
5) 16~20 hours at a temperature of the emulsion in step 4) being stored in 15~25 DEG C；
6) upper layer oil slick is removed, oil-water stable emulsion of sub-cloud gives over to spare；
7) 125-WHg light irradiation oily wastewater, the photochemistry that 125-W Hg lamp is radiated as ultraviolet are used in vertical direction
Energy；
8) constant voltage of 2~4V can be generated by polycrystalline silicon solar panel conversion solar, constant voltage is as electrochemistry
Energy；
9) heat chemistry energy is generated by parabolic solar concentrator (Φ 1.5M) equipment, heats oily wastewater, temperature range
For 20~80oC；
10) total time is 2 hours, and per half an hour sampling and measuring observes oil removal rate and demulsification；
11) work of solar energy-thermo-electrically coupling driving processing oil-contaminated water of oil field is completed.
The oil-contaminated water of oil field is the oily wastewater that simulation is prepared.Experimental period is 2h, and when the sampling and measuring of interval
Between be 0.5h, 1.0h, 1.5h, 2.0h respectively.
Embodiment one
Polyacrylamide meltage is big in ternary composite flooding water extraction, and recovered water viscosity is high, and oil droplet rising is very slow, therefore,
Reduce the demulsification progress that viscosity is conducive to oily wastewater.
Temperature is respectively 20 in solar energy STEP systemoC、40oC、60oC and 80oUnder the conditions of C, oil field oil-containing dirt in 2 hours
The variation of water viscosity is as follows: sewage viscosity is in 1.4mPa s or so before solar energy STEP processing, when the time is 2h during STEP
Temperature is respectively 20oC、40oC、60oC and 80oViscosity is respectively 1.28mPas, 1.17mPas, 1.09mPas and 1.01 when C
mpas。
From the foregoing, it will be observed that solar energy STEP treatment process has good viscosity reducing effect.
Embodiment two
Zeta potential is the critical index for measuring emulsion stability, it will affect the coalescence of oil droplet, Zeta potential absolute value
When larger, oil droplet is mutually exclusive；When the absolute value of Zeta potential is smaller, oil droplet is mutually coalesced.
The pH value of the oily wastewater of solar energy SETP processing is maintained at 8~9 or so.It is 20 in temperatureoC、40oC、60oC、
80oUnder the conditions of C in STEP treatment process in 0~2h Zeta potential situation of change.
] with the extension of experimental period, the absolute value of zeta current potential is respectively less than the absolute value of initial zeta current potential, oil droplet area
Domain mutually coalesces, and emulsion is unstable.
Embodiment three
Before two oil droplets merge, centainly there is the rupture of oil droplet liquid film.Therefore, oily film strength determines the difficulty of oil droplet coalescence
Easy degree.The loss modulus of interfacial rheological characteristic energy is directly proportional to interfacial viscosity, can reaction interface molecule film strength.
It is 20 in temperatureoC、40oC、60oC and 80o0~2h loss modulus situation of change in STEP treatment process under the conditions of C
For with the increase of demulsification time, the loss modulus during being demulsified is gradually reduced.As the temperature rises, loss modulus subtracts
Small speed is accelerated.
From the foregoing, it will be observed that STEP system has good effect to the interfacial viscosity of oil droplet when reducing demulsification, oil droplet can be weakened
The stability of interfacial film.
Example IV
In order to further intuitively observe the coalescence situation of oil droplet, it is observed using the electron microscope of connection computer, in this reality
In testing, electron microscope enlarged drawing multiple used is 200 times.
20oC、40oC、60oC and 80oIt, can with the extension of processing time in solar energy STEP system under conditions of C
Significantly observe that oil droplet size increases, oil droplet gradually coalesces, to achieve the purpose that demulsification.
Embodiment five
Emulsion oil content is one of major parameter of emulsion, and the reduction of oil content can measure demulsification efficiency.
By the conversion of solar energy, the treatment process of oily wastewater can be realized under the premise of low energy consumption.
20oC、40oC、60oC and 80oIn STEP system under the conditions of C, pass through oil content measuring method (uv spectrophotometric
Method) (SL93.2-1994) measures the oil content of system in 0~2h, then calculates fuel-displaced removal efficiency (ED).
As the temperature rises, oily removal efficiency increases, and illustrates that temperature is an important factor for influencing oily wastewater demulsification
One of.
It is that oil removal rate is above 30% when being mainly demulsified 0~0.5 h reacted by field effect, when cathode is covered by oil droplet
And anode, when being covered by salt ion, the increased speed of oily removal efficiency slows down.
In STEP system under conditions of 20oC, 40oC, 60oC and 80oC, the reaction final oil removal rate of 2h is respectively
59.30%, 63.59%, 74.21% and 78.86%, and react and not up to balance, extension oil removal rate at any time also will increase.
It should be understood that the present invention is the demulsification in STEP system under voltage and temperature specified conditions, change condition meeting
There is different demulsification efficiencies, and high voltage demulsification even can be more preferable, in order to realize the purpose of low energy consumption, so selection
3V voltage, so STEP system has extraordinary application prospect to processing oil-contaminated water of oil field.
In conclusion the energy used in the demulsification processing method of this oily wastewater solar energy STEP be sustainable use too
It is positive can the energy and its demulsification technology it is without secondary pollution to environment, we pass through viscosity, the rheology to emulsion during demulsification
The micro-variations such as property and Zeta potential and oil removal rate intuitively change to check demulsification.The preparation of solar energy STEP system
Simple process, easy to operate and safe operation, low production cost is reusable, is suitable for industrialized production.
Claims (2)
1. a kind of demulsification processing method of oily wastewater solar energy STEP, it is characterised in that: including deionized water, dodecyl
Benzene sulfonic acid sodium salt, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride, ten
Dialkyl benzene sulfonic acids sodium, polyacrylamide, sodium hydroxide, sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and chlorination
The content of magnesium be respectively 0.9~1.1L, 0.15~0.17g/L, 230~250ppm, 0.9~1.1g/L, 0.95~1.0g/L,
0.9~0.1.1g/L, 0.05~0.07g/L, 2.5~2.9g/L, 0.15~0.19g/L and 0.12~0.16g/L.
2. a kind of demulsification processing method of oily wastewater solar energy STEP according to claim 1, it is characterised in that: method
Steps are as follows:
1) neopelex, polyacrylamide and sodium hydroxide, dodecyl benzene sulfonic acid are added in deionized water
Sodium, polyacrylamide and sodium hydroxide dissolve in water forms solution system, and wherein neopelex is living as surface
Property agent, polyacrylamide is as polymer, and sodium hydroxide is as alkali；
2) sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are added in solution system, forms mixing
Object, wherein sodium carbonate, sodium chloride, sodium sulphate, sodium bicarbonate, calcium chloride and magnesium chloride are as salt；
3) crude oil is added in mixture, forms mixture solution；
4) using FLUKO high-speed digital electrical blender under conditions of 2500~3500 revs/min, by the mixture in step 3)
Emulsifying soln 15~25 minutes, emulsion is formed after emulsification；
5) 16~20 hours at a temperature of the emulsion in step 4) being stored in 15~25 DEG C；
6) upper layer oil slick is removed, oil-water stable emulsion of sub-cloud gives over to spare；
7) 125-WHg light irradiation oily wastewater, the photochemistry that 125-W Hg lamp is radiated as ultraviolet are used in vertical direction
Energy；
8) constant voltage of 2~4V can be generated by polycrystalline silicon solar panel conversion solar, constant voltage is as electrochemistry
Energy；
9) heat chemistry energy is generated by parabolic solar concentrator (Φ 1.5M) equipment, heats oily wastewater, temperature range
For 20~80oC；
10) total time is 2 hours, and per half an hour sampling and measuring observes oil removal rate and demulsification；
11) work of solar energy-thermo-electrically coupling driving processing oil-contaminated water of oil field is completed.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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