CN109574343A - The demulsification processing method of oily wastewater solar energy STEP - Google Patents

The demulsification processing method of oily wastewater solar energy STEP Download PDF

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Publication number
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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sodium
chloride
oil
polyacrylamide
oily wastewater
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Inventor
聂春红
王宝辉
范美玲
杜欢
苑丹丹
闫超
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Northeast Petroleum University
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Northeast Petroleum University
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    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F9/00Multistage treatment of water, waste water or sewage
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/30Treatment of water, waste water, or sewage by irradiation
    • C02F1/32Treatment of water, waste water, or sewage by irradiation with ultraviolet light
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/40Devices for separating or removing fatty or oily substances or similar floating material
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/46Treatment of water, waste water, or sewage by electrochemical methods
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/32Hydrocarbons, e.g. oil
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2103/00Nature of the water, waste water, sewage or sludge to be treated
    • C02F2103/10Nature of the water, waste water, sewage or sludge to be treated from quarries or from mining activities
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2201/00Apparatus for treatment of water, waste water or sewage
    • C02F2201/009Apparatus with independent power supply, e.g. solar cells, windpower, fuel cells
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A20/00Water conservation; Efficient water supply; Efficient water use
    • Y02A20/20Controlling water pollution; Waste water treatment
    • Y02A20/208Off-grid powered water treatment
    • Y02A20/212Solar-powered wastewater sewage treatment, e.g. spray evaporation

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  • 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

The demulsification processing method of oily wastewater solar energy STEP
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.
CN201910051394.6A 2019-01-21 2019-01-21 The demulsification processing method of oily wastewater solar energy STEP Pending CN109574343A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111777317A (en) * 2020-07-01 2020-10-16 遵义市菲科环保科技有限公司 Composition for reducing viscosity of oil sludge sand condensate and preparation method and application thereof

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507495A1 (en) * 1981-06-11 1982-12-17 Marathon Oil Co DEMULSIONING OF AN EMULSION IN THE MEDIUM PHASE OF CRUDE OIL
US4444654A (en) * 1983-09-01 1984-04-24 Exxon Research & Engineering Co. Method for the resolution of enhanced oil recovery emulsions
CN1865172A (en) * 2005-05-20 2006-11-22 中国石油天然气股份有限公司 Oil repellents
CN104495973A (en) * 2015-01-12 2015-04-08 东北石油大学 Viscosity reduction reaction device for high-concentration polyacrylamide in sewage of oilfield and viscosity reduction method
CN104803441A (en) * 2015-05-05 2015-07-29 东北石油大学 Device and method of utilizing solar energy light-heat-electric coupling to treat acrylonitrile sewage
CN108275811A (en) * 2018-01-10 2018-07-13 东北石油大学 A method of passing through the hot THM coupling degradation of organic waste water of optical-electronic-using solar energy
CN109160662A (en) * 2018-10-15 2019-01-08 东北石油大学 A kind of energy conservation and environmental protection oil field waste water treatment system and its method for handling oil field waste

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2507495A1 (en) * 1981-06-11 1982-12-17 Marathon Oil Co DEMULSIONING OF AN EMULSION IN THE MEDIUM PHASE OF CRUDE OIL
US4444654A (en) * 1983-09-01 1984-04-24 Exxon Research & Engineering Co. Method for the resolution of enhanced oil recovery emulsions
CN1865172A (en) * 2005-05-20 2006-11-22 中国石油天然气股份有限公司 Oil repellents
CN104495973A (en) * 2015-01-12 2015-04-08 东北石油大学 Viscosity reduction reaction device for high-concentration polyacrylamide in sewage of oilfield and viscosity reduction method
CN104803441A (en) * 2015-05-05 2015-07-29 东北石油大学 Device and method of utilizing solar energy light-heat-electric coupling to treat acrylonitrile sewage
CN108275811A (en) * 2018-01-10 2018-07-13 东北石油大学 A method of passing through the hot THM coupling degradation of organic waste water of optical-electronic-using solar energy
CN109160662A (en) * 2018-10-15 2019-01-08 东北石油大学 A kind of energy conservation and environmental protection oil field waste water treatment system and its method for handling oil field waste

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111777317A (en) * 2020-07-01 2020-10-16 遵义市菲科环保科技有限公司 Composition for reducing viscosity of oil sludge sand condensate and preparation method and application thereof
CN111777317B (en) * 2020-07-01 2022-10-21 遵义市菲科环保科技有限公司 Composition for reducing viscosity of oil sludge sand condensate and preparation method and application thereof

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