CN108439505B - A hydrate-based seawater desalination method based on graphite strengthening - Google Patents
A hydrate-based seawater desalination method based on graphite strengthening Download PDFInfo
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- CN108439505B CN108439505B CN201810357646.3A CN201810357646A CN108439505B CN 108439505 B CN108439505 B CN 108439505B CN 201810357646 A CN201810357646 A CN 201810357646A CN 108439505 B CN108439505 B CN 108439505B
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- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 95
- 229910002804 graphite Inorganic materials 0.000 title claims abstract description 95
- 239000010439 graphite Substances 0.000 title claims abstract description 95
- 239000013535 sea water Substances 0.000 title claims abstract description 79
- 238000000034 method Methods 0.000 title claims abstract description 46
- 238000010612 desalination reaction Methods 0.000 title claims abstract description 34
- 238000005728 strengthening Methods 0.000 title claims abstract 3
- 239000002245 particle Substances 0.000 claims abstract description 90
- 239000013505 freshwater Substances 0.000 claims abstract description 33
- 238000006703 hydration reaction Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- RGSFGYAAUTVSQA-UHFFFAOYSA-N pentamethylene Natural products C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 51
- 239000011259 mixed solution Substances 0.000 claims description 32
- 239000007788 liquid Substances 0.000 claims description 28
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 26
- 239000006185 dispersion Substances 0.000 claims description 25
- 238000000926 separation method Methods 0.000 claims description 10
- FRCHKSNAZZFGCA-UHFFFAOYSA-N 1,1-dichloro-1-fluoroethane Chemical compound CC(F)(Cl)Cl FRCHKSNAZZFGCA-UHFFFAOYSA-N 0.000 claims description 9
- 230000002787 reinforcement Effects 0.000 claims description 9
- 238000001704 evaporation Methods 0.000 claims description 7
- 239000000243 solution Substances 0.000 claims description 7
- 238000003756 stirring Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 2
- 238000000967 suction filtration Methods 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims 1
- 125000001511 cyclopentyl group Chemical group [H]C1([H])C([H])([H])C([H])([H])C([H])(*)C1([H])[H] 0.000 claims 1
- 150000004677 hydrates Chemical class 0.000 abstract description 6
- 238000005265 energy consumption Methods 0.000 abstract description 5
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 9
- 238000001914 filtration Methods 0.000 description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 238000004364 calculation method Methods 0.000 description 5
- 238000011033 desalting Methods 0.000 description 5
- 238000004458 analytical method Methods 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- -1 salt ions Chemical class 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
-
- 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
- C02F2103/08—Seawater, e.g. for desalination
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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)
- Carbon And Carbon Compounds (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
一种基于石墨强化的水合物法海水淡化方法，向海水与水合物客体分子的混合液中加入石墨颗粒，在低温下进行水合反应生成水合物，然后对所述水合物进行分离、分解得到脱盐的淡水、水合物客体分子及石墨颗粒；回收水合物客体分子及石墨颗粒以循环使用；所述海水淡化方法的脱盐效率为81‑87%，淡水产率为45‑57%。本发明通引入廉价、安全、易分离的石墨颗粒与海水、水合物客体分子混合，通过在常压低温下快速生成水合物，通过分离并分解水合物得到淡水。本发明实现了利用安全高效且成本低的石墨颗粒为外源物，促进能耗低的水合物过程快速发生，实现海水的高效快速淡化，且所用石墨颗粒可以回收循环利用。本发明具有过程简单，脱盐效率高，淡水产率高，设备简单易得等优点。A hydrate-based seawater desalination method based on graphite strengthening, adding graphite particles to a mixture of seawater and hydrate guest molecules, performing a hydration reaction at a low temperature to generate hydrates, and then separating and decomposing the hydrates to obtain desalination The fresh water, hydrate guest molecules and graphite particles are recovered; the hydrate guest molecules and the graphite particles are recovered for recycling; the desalination efficiency of the seawater desalination method is 81-87%, and the fresh water yield is 45-57%. In the present invention, cheap, safe and easy-to-separate graphite particles are introduced to mix with seawater and hydrate guest molecules, rapidly generate hydrate under normal pressure and low temperature, and obtain fresh water by separating and decomposing hydrate. The invention realizes the use of safe, efficient and low-cost graphite particles as exogenous substances, promotes the rapid occurrence of a hydrate process with low energy consumption, realizes efficient and rapid desalination of seawater, and the used graphite particles can be recovered and recycled. The invention has the advantages of simple process, high desalination efficiency, high fresh water yield, simple and easy-to-obtain equipment and the like.
Description
Technical Field
The invention relates to a method for seawater desalination treatment based on a hydrate method, in particular to a method for seawater desalination based on graphite reinforcement by a hydrate method.
Background
Sea water desalination is a key technology for solving the water resource crisis, and the existing sea water desalination technologies can be roughly divided into two types: one is a heat energy-based technology, which makes the water in the seawater generate phase change under the action of heat energy, thereby separating pure water from the seawater; the other is based on membrane process, by ion/molecular sieving under high pressure, obtaining fresh water. The two prior arts have the problems of high energy consumption, high requirement on the quality of water to be treated, great equipment investment and the like, so that the cost of the seawater desalination technology is high and the application is limited. The hydrate method seawater desalination technology utilizes water molecules to form cage-wrapped hydrate guest molecules through hydrogen bonds at low temperature to form hydrate solids, the hydrate forming process has a salt elimination effect, salt ions cannot be wrapped in the cage-shaped objects, and the formed solid hydrates are decomposed after solid-liquid separation to obtain fresh water. Because some hydrates can be generated above the freezing point under normal pressure, the energy consumption for forming the hydrates is far lower than that required by the conventional water-gas phase change, the hydrate method seawater desalination has wide adaptability to water quality, seawater does not need to be pretreated, and in addition, because the generation of the hydrates can be carried out under normal pressure and low temperature, the required equipment and operation cost can be obviously reduced. Therefore, the development of the hydrate method, an efficient and energy-saving seawater desalination technology, becomes a research hotspot and is concerned by the scientific and industrial fields.
The hydrate method seawater desalination technology uses gas molecules, such as methane, as hydrate guest molecules in the early period, and the technology needs high-pressure equipment, so the cost on equipment and energy consumption is higher. Furthermore, since the salt ions are thermodynamically generated at present, the operating conditions are more severe, and the technology is less efficient and attractive due to the slow generation kinetics.
Disclosure of Invention
The invention aims to provide a method for desalinating seawater by combining exogenous particles with a hydrate method, which has simple steps and can effectively improve the seawater desalination rate and desalination efficiency.
The invention solves the technical problems in the prior art by adopting the following technical scheme: a method for desalinating seawater by using a hydrate method based on graphite reinforcement comprises the steps of adding graphite particles into a mixed solution of seawater and hydrate guest molecules, carrying out hydration reaction at a low temperature to generate a hydrate, and then separating and decomposing the hydrate to obtain desalted fresh water, the hydrate guest molecules and the graphite particles; recovering hydrate guest molecules and graphite particles for recycling; the desalination efficiency of the seawater desalination method is 81-87%, and the fresh water yield is 45-57%.
The method comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
adding hydrate guest molecules into seawater to prepare a mixed solution of the seawater and the hydrate guest molecules, wherein the volume ratio of the seawater to the hydrate guest molecules in the mixed solution is 3: 1; adding graphite particles into the mixed solution, and dispersing to obtain a graphite particle dispersion solution, wherein the adding proportion of the graphite particles in the graphite particle dispersion solution is that 1-7 g of graphite particles are added into every 6L of the mixed solution;
s2, generating hydrate at low temperature:
dispersing graphite particles in 0oC-2oC, stirring at constant temperature to enable the graphite particle dispersion liquid to perform hydration reaction to generate hydrate;
s3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oPerforming suction filtration separation at the temperature below C, and then performing centrifugal treatment to separate seawater carried in the hydrate to obtain desalted hydrate;
s4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to 10oDecomposing at the temperature above C and lower than the boiling point of the hydrate guest molecule, separating to obtain desalted fresh water, and evaporating the desalted hydrate after separation to obtain the hydrate guest molecule and graphite particles; the obtained hydrate guest molecules and graphite particles are used for recycling.
The average particle size of the graphite particles is 1-150 micrometers.
The hydrate guest molecules are organic guest molecules which are not mutually soluble with water and comprise cyclopentane and monofluorodichloroethane.
In step S3, the hydrate is centrifuged by a centrifugal separator, and the centrifugal temperature in the centrifugal separator is controlled to-20%oC~5 oAnd C, the centrifugal rotating speed is 4000-18000 r/min, and the centrifugal time is 2-10 min.
The invention has the beneficial effects that: according to the invention, graphite particles are added into a mixed solution of seawater and hydrate guest molecules, graphite particle hydrate is rapidly and efficiently generated at a low temperature, desalted hydrate is obtained by separating the generated graphite particle hydrate, then the desalted hydrate is decomposed to separate fresh water, hydrate guest molecules and graphite particles, and the obtained hydrate guest molecules and graphite particles are used for being added into seawater for recycling. The method has the advantages of high hydrate generation rate, high desalination efficiency and high fresh water yield. The method is suitable for coastal areas, especially coastal areas with low temperature, and can be used for energy-saving and efficient seawater desalination and increase fresh water sources. In the reinforcing method, cheap, safe and easily-separated graphite particles are introduced to be mixed with seawater and hydrate guest molecules, the hydrate is quickly generated at normal pressure and low temperature, and the hydrate is separated and decomposed to obtain fresh water. The invention realizes that the safe, high-efficiency and low-cost graphite particles are used as exogenous substances, promotes the quick generation of the hydrate process with low energy consumption, realizes the high-efficiency and quick desalination of seawater, and can recycle the graphite particles. The seawater desalination method has the advantages of simple and green process, short time consumption, high desalination efficiency, high fresh water yield, simple and easily-obtained equipment and the like.
Detailed Description
The invention is illustrated below with reference to specific examples: the hydrate guest molecules in the examples are all preferably organic guest molecules immiscible with water, and representative ones of cyclopentane and monofluorodichloroethane are selected as the hydrate guest molecules to illustrate the invention.
Example 1:
a hydrate method seawater desalination method based on graphite reinforcement comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
cyclopentane is added into seawater to prepare 600mL of mixed solution of seawater and cyclopentane, and the volume ratio of seawater to cyclopentane in the mixed solution is 3: 1. Adding 0.1 g of graphite particles with the particle size of 150 microns into 600mL of mixed solution of seawater and cyclopentane, and carrying out dispersion treatment for 5 minutes to obtain graphite particle dispersion liquid which is uniformly mixed.
S2, generating hydrate at low temperature:
the obtained graphite particle dispersion liquid is in 2oAnd C, stirring under the constant temperature condition to enable the graphite particle dispersion liquid to quickly perform hydration reaction to generate hydrate.
S3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oFiltering at a temperature below C, and separating at 5 deg.CoAnd C, centrifuging in a centrifugal separator at the rotating speed of 4000 rpm to separate seawater entrained in the hydrate to obtain desalted hydrate.
S4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to 10oDecomposing at the step C, separating liquid to obtain desalted fresh water, and continuously evaporating desalted hydrate after liquid separation to obtain cyclopentane and graphite particles; the resulting cyclopentane and graphite particles will be recycled.
The desalting efficiency was found to be 81% and the fresh water yield was found to be 45% by analysis and calculation.
Example 2:
a hydrate method seawater desalination method based on graphite reinforcement comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
cyclopentane is added into seawater to prepare 600mL of mixed solution of seawater and cyclopentane, and the volume ratio of seawater to cyclopentane in the mixed solution is 3: 1. Adding 0.4 g of graphite particles with the particle size of 70 microns into 600mL of mixed solution of seawater and cyclopentane, and carrying out dispersion treatment for 6 minutes to obtain graphite particle dispersion liquid which is uniformly mixed.
S2, generating hydrate at low temperature:
the obtained graphite particle dispersion liquid is in 0oAnd C, stirring under the constant temperature condition to enable the graphite particle dispersion liquid to quickly perform hydration reaction to generate hydrate.
S3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oFiltering at a temperature below C, and separating at 0 deg.CoAnd C, centrifuging in a centrifugal separator at the rotating speed of 8000 rpm to separate seawater entrained in the hydrate to obtain desalted hydrate.
S4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to the solution at 30oDecomposing at the step C, separating liquid to obtain desalted fresh water, and continuously evaporating desalted hydrate after liquid separation to obtain cyclopentane and graphite particles; the resulting cyclopentane and graphite particles will be recycled.
The desalting efficiency was found to be 83% and the fresh water yield was found to be 50% by analysis and calculation.
Example 3:
a hydrate method seawater desalination method based on graphite reinforcement comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
cyclopentane is added into seawater to prepare 600mL of mixed solution of seawater and cyclopentane, and the volume ratio of seawater to cyclopentane in the mixed solution is 3: 1. Adding 0.6 g of graphite particles with the particle size of 7 microns into 600mL of mixed solution of seawater and cyclopentane, and carrying out dispersion treatment for 8 minutes to obtain graphite particle dispersion liquid which is uniformly mixed.
S2, generating hydrate at low temperature:
the obtained graphite particle dispersion liquid is in 0oAnd C, stirring under the constant temperature condition to enable the graphite particle dispersion liquid to quickly perform hydration reaction to generate hydrate.
S3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oFiltering and separating at a temperature below C, and filtering at-10 deg.CoAnd C, centrifuging in a centrifugal separator at the rotating speed of 12000 rpm to separate seawater entrained in the hydrate to obtain desalted hydrate.
S4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 was added at 35oDecomposing at the step C, separating liquid to obtain desalted fresh water, and continuously evaporating desalted hydrate after liquid separation to obtain cyclopentane and graphite particles; the resulting cyclopentane and graphite particles will be recycled.
The desalting efficiency was found to be 85% and the fresh water yield was found to be 53% by analytical detection and calculation.
Example 4:
a hydrate method seawater desalination method based on graphite reinforcement comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
cyclopentane is added into seawater to prepare 600mL of mixed solution of seawater and hydrate guest molecules, and the volume ratio of the seawater to the cyclopentane in the mixed solution is 3: 1. Adding 0.7 g of graphite particles with the particle size of 1 micron into 600mL of mixed solution of seawater and cyclopentane, and carrying out dispersion treatment for 10 minutes to obtain graphite particle dispersion liquid which is uniformly mixed.
S2, generating hydrate at low temperature:
the obtained graphite particle dispersion liquid is in 0oAnd C, stirring under the constant temperature condition to enable the graphite particle dispersion liquid to quickly perform hydration reaction to generate hydrate.
S3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oFiltering and separating at a temperature below C, and filtering at-20 deg.CoAnd C, centrifuging in a centrifugal separator at the rotating speed of 18000 rpm to separate seawater entrained in the hydrate to obtain desalted hydrate.
S4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to the solution at 30oDecomposing at the step C, separating liquid to obtain desalted fresh water, and continuously evaporating desalted hydrate after liquid separation to obtain cyclopentane and graphite particles; the resulting cyclopentane and graphite particles will be recycled.
The desalting efficiency was found to be 87% and the fresh water yield was found to be 57% by analysis and calculation.
Example 5:
a hydrate method seawater desalination method based on graphite reinforcement comprises the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
600mL of a mixed solution of seawater and monofluorodichloroethane is prepared by adding monofluorodichloroethane to seawater, and the volume ratio of the seawater to the monofluorodichloroethane in the mixed solution is 3: 1. 0.7 g of graphite particles with the particle size of 1 micron are added into 600mL of mixed solution of seawater and monofluorodichloroethane, and the graphite particles are dispersed for 9 minutes to obtain uniformly mixed graphite particle dispersion liquid.
S2, generating hydrate at low temperature:
the obtained graphite particle dispersion liquid is in 0oAnd C, stirring under the constant temperature condition to enable the graphite particle dispersion liquid to quickly perform hydration reaction to generate hydrate.
S3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oFiltering and separating at a temperature below C, and filtering at-20 deg.CoAnd C, centrifuging in a centrifugal separator at the rotating speed of 10000 rpm to separate the seawater entrained in the hydrate to obtain a desalted hydrate.
S4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to the solution at 30oDecomposing at the temperature of C, separating liquid to obtain desalted fresh water, and continuously evaporating desalted hydrate after liquid separation to obtain monofluorodichloroethane and graphite particles; the resulting monofluorodichloroethane and graphite particles will be recycled.
The desalting efficiency was found to be 85% and the fresh water yield was found to be 53% by analytical detection and calculation.
The foregoing is a more detailed description of the present invention in connection with specific preferred embodiments and is not intended to limit the practice of the invention to these embodiments. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the spirit of the invention, and all shall be considered as belonging to the protection scope of the invention.
Claims (3)
1. A hydrate method seawater desalination method based on graphite reinforcement is characterized by comprising the following steps:
s1, adding graphite particles into the mixed solution of seawater and hydrate guest molecules:
adding hydrate guest molecules into seawater to prepare a mixed solution of the seawater and the hydrate guest molecules, wherein the volume ratio of the seawater to the hydrate guest molecules in the mixed solution is 3: 1; adding graphite particles into the mixed solution, and dispersing to obtain a graphite particle dispersion solution, wherein the adding proportion of the graphite particles in the graphite particle dispersion solution is that 1-7 g of graphite particles are added into every 6L of the mixed solution; the hydrate guest molecule is cyclopentane or monofluorodichloroethane;
s2, generating hydrate at low temperature:
dispersing graphite particles in a solventAt 0oC-2oC, stirring at constant temperature to enable the graphite particle dispersion liquid to perform hydration reaction to generate hydrate;
s3, separating the generated hydrate:
the hydrate obtained in step S2 is added to the mixture of 5oPerforming suction filtration separation at the temperature below C, and then performing centrifugal treatment to separate seawater carried in the hydrate to obtain desalted hydrate;
s4, decomposing the desalted hydrate to obtain fresh water, hydrate guest molecules and graphite particles:
the desalted hydrate obtained in step S3 is added to 10oDecomposing at the temperature above C and lower than the boiling point of the hydrate guest molecule, separating to obtain desalted fresh water, and evaporating the desalted hydrate after separation to obtain the hydrate guest molecule and graphite particles; the obtained hydrate guest molecules and graphite particles are used for cyclic utilization;
the desalination efficiency of the seawater desalination method is 81-87%, and the fresh water yield is 45-57%.
2. The method for desalinating seawater based on the graphite reinforced hydrate method according to claim 1, wherein the average particle size of the graphite particles is 1-150 μm.
3. The method for desalinating seawater by using the hydrate method based on graphite strengthening according to claim 1, wherein in the step S3, the hydrate is centrifugally treated by using a centrifugal separator, and the centrifugal temperature in the centrifugal separator is controlled to be-20 DEGoC~5 oAnd C, the centrifugal rotating speed is 4000-18000 r/min, and the centrifugal time is 2-10 min.
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| CN110527849B (en) * | 2019-08-13 | 2020-08-25 | 大连理工大学 | A graphite-enhanced hydrate method lithium ion continuous enrichment system and method |
| KR20230010254A (en) * | 2020-05-18 | 2023-01-18 | 바텔리 메모리얼 인스티튜트 | Systems, methods and compositions for purifying water |
| CN113104923B (en) * | 2021-03-26 | 2022-06-07 | 大连理工大学 | A method for desalination of high-salt wastewater based on liquid-solid phase transition method |
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| WO2011049996A1 (en) * | 2009-10-19 | 2011-04-28 | Calera Corporation | Methods and systems for treating industrial waste gases |
| KR101327545B1 (en) * | 2012-08-17 | 2013-11-08 | 한국생산기술연구원 | Method for water treatment using hydrate-purifying process |
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| CN100999364A (en) * | 2006-05-16 | 2007-07-18 | 葛文宇 | Comprehensive utilization high advantage zero discharge seawater desalination production technology |
| CN103193230A (en) * | 2013-04-09 | 2013-07-10 | 常州大学 | Ionic liquid gas hydrate accelerant |
| CN104888673A (en) * | 2015-05-20 | 2015-09-09 | 常州大学 | Oxidized graphene gas hydrate accelerant and preparation method thereof |
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| Enhanced efficiency of salt removal from brine for cyclopentane hydrates by washing, centrifuging,and sweating;Songlee Han et al.;《Desalination》;20141231;第354卷;17-22 * |
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