AU2021103727A4 - Deoiling and purification device for emulsified wastewater - Google Patents
Deoiling and purification device for emulsified wastewater Download PDFInfo
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- AU2021103727A4 AU2021103727A4 AU2021103727A AU2021103727A AU2021103727A4 AU 2021103727 A4 AU2021103727 A4 AU 2021103727A4 AU 2021103727 A AU2021103727 A AU 2021103727A AU 2021103727 A AU2021103727 A AU 2021103727A AU 2021103727 A4 AU2021103727 A4 AU 2021103727A4
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- Australia
- Prior art keywords
- sponge
- super
- superlipophilic
- super hydrophilic
- deoiling
- Prior art date
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- 239000002351 wastewater Substances 0.000 title claims abstract description 27
- 238000000746 purification Methods 0.000 title claims abstract description 19
- 238000000926 separation method Methods 0.000 claims abstract description 23
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000009736 wetting Methods 0.000 claims abstract description 16
- 239000012528 membrane Substances 0.000 claims abstract description 15
- 230000003075 superhydrophobic effect Effects 0.000 claims abstract description 12
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 4
- 229910001220 stainless steel Inorganic materials 0.000 claims description 4
- 239000010935 stainless steel Substances 0.000 claims description 4
- 238000004381 surface treatment Methods 0.000 claims description 4
- 229920000877 Melamine resin Polymers 0.000 claims description 3
- 238000001125 extrusion Methods 0.000 claims description 3
- JDSHMPZPIAZGSV-UHFFFAOYSA-N melamine Chemical compound NC1=NC(N)=NC(N)=N1 JDSHMPZPIAZGSV-UHFFFAOYSA-N 0.000 claims description 3
- PYJJCSYBSYXGQQ-UHFFFAOYSA-N trichloro(octadecyl)silane Chemical compound CCCCCCCCCCCCCCCCCC[Si](Cl)(Cl)Cl PYJJCSYBSYXGQQ-UHFFFAOYSA-N 0.000 claims description 3
- 239000010963 304 stainless steel Substances 0.000 claims description 2
- 229910000589 SAE 304 stainless steel Inorganic materials 0.000 claims description 2
- ORTQZVOHEJQUHG-UHFFFAOYSA-L copper(II) chloride Chemical compound Cl[Cu]Cl ORTQZVOHEJQUHG-UHFFFAOYSA-L 0.000 claims description 2
- 239000008367 deionised water Substances 0.000 claims description 2
- 229910021641 deionized water Inorganic materials 0.000 claims description 2
- 238000001035 drying Methods 0.000 claims description 2
- 239000012530 fluid Substances 0.000 claims description 2
- 230000002209 hydrophobic effect Effects 0.000 claims description 2
- 239000011148 porous material Substances 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 abstract description 10
- 239000000463 material Substances 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 6
- 239000003463 adsorbent Substances 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000000126 substance Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000839 emulsion Substances 0.000 description 3
- 238000004065 wastewater treatment Methods 0.000 description 3
- 239000013543 active substance Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 235000005985 organic acids Nutrition 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000001179 sorption measurement Methods 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
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/22—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof comprising organic material
- B01J20/26—Synthetic macromolecular compounds
- B01J20/265—Synthetic macromolecular compounds modified or post-treated polymers
-
- 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
- C02F1/38—Treatment of water, waste water, or sewage by centrifugal separation
-
- 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
- C02F1/68—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water
- C02F1/681—Treatment of water, waste water, or sewage by addition of specified substances, e.g. trace elements, for ameliorating potable water by addition of solid materials for removing an oily layer on water
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K3/00—Materials not provided for elsewhere
- C09K3/32—Materials not provided for elsewhere for absorbing liquids to remove pollution, e.g. oil, gasoline, fat
-
- 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
Abstract
This invention discloses a deoiling and purification device for emulsified
wastewater based on the materials with superhydrophobic/superlipophilic and
superhydrophilic/superlipophilic feature of surface wetting. The device takes super
hydrophobic/super hydrophilic sponge and super hydrophilic/super hydrophilic mesh
membrane as core separation components, and the sponge and mesh membrane are
arranged inside the centrifugal cyclone separation tank. Under the centrifugal
separation, emulsified oil droplets located inside the cyclone can easily wet and spread
on the surface of super hydrophilic/super hydrophilic mesh membrane and be
captured by super hydrophobic/super hydrophilic sponge, while water is blocked and
distributed outside the cyclone, thus realizing demulsification and separation of
emulsified wastewater. The deoiling purification device has the advantages of low
manufacturing cost, simple treatment process, and it does not need both adsorbent
and demulsifier, and has small secondary pollution, high treatment efficiency with low
cost, and strong adaptability and the like. It can solve the problems existing in the prior
demulsification technology, and has wide application prospects.
1/1
FIGURES
2
o 0 os0?
0 0
4 ,/ 4
Figure 1
Description
1/1 FIGURES
2
o 0 os0?
0 0
4 ,/ 4
Figure 1
Deoiling and purification device for emulsified wastewater
TECHNICAL FIELD This invention is in the field of oily emulsified wastewater deoiling and purifying, particularly relates to emulsified wastewater deoiling and purifying device based on special wetting material, the device is based on superhydrophilic/superlipophilic mesh membrane and superhydrophobic/superlipophilic sponge, the demulsification and deoiling purification of emulsified wastewater can be realized by simple centrifugal cyclone treatment, which successfully overcomes the problems existing in the prior demulsification and separation technology of emulsified wastewater.
BACKGROUND Oil-water separation has always been an important content in the field of oil purification. Although traditional separation technologies such as sedimentation, adsorption, centrifugation, vacuum separation and cyclone separation can better separate non-emulsion oily wastewater, in many cases, the oil in oily wastewater does not exist in free form, it forms stable O/W dispersed phase droplets under the action of interfacial active substances such as organic acids and organic alcohols. The interfacial transfer behavior of oil droplets is seriously hindered due to the existence of surrounding interfacial films. Therefore, demulsification and deoiling of emulsified wastewater has been a difficult problem to be solved in the field of oily wastewater treatment for a long time. Chemical demulsifiers can quickly absorb or partially replace the natural interfacial active substances that make up the oil-water interfacial film, and form a mixed film with lower strength than the original interfacial film, which leads to the destruction of the interfacial film and completes the demulsification process, so it is still the method with the best demulsification effect and the most application at present. However, it is well known that chemical demulsifiers are difficult to recover and recycle during use, and are usually discharged to the environment along with sewage, which not only causes high demulsification costs, but also brings serious secondary pollution problems. In recent years, the technology of biological demulsification and electric demulsification has been developing continuously, but its practical application effect is still not ideal. The appearance of new materials with feature of surface wetting has made it possible to realize the rapid demulsification and purification of emulsion by physical means. By reasonable technical means, the technology not only can deoil and purify emulsified wastewater, but also avoids the extensive use of chemical demulsifiers, and reduces the secondary pollution emission, while the cost of treatment unit and treatment cost can be lowered. However, up to now, there are still few demulsification and deoiling devices for emulsified wastewater based on materials with feature of surface wetting, which is due to the lack of a comprehensive solution of using special material with feature of surface wetting to solve demulsification and deoiling of emulsified wastewater. In order to make the special material with feature of surface wetting be really applied to solve the demulsification and deoiling problem of emulsified wastewater, the present invention creatively combines super hydrophilic/super lipophilic mesh membrane with super hydrophobic/super lipophilic sponge, and skillfully utilizes centrifugal separation principle to construct a brand-new demulsification and deoiling purification and separation device for emulsified wastewater, so that emulsified wastewater can be quickly demulsified, deoiled and purified by simple physical treatment, and the purification efficiency of emulsified wastewater is greatly improved, which solves the difficult problem of emulsion demulsification purification that cannot be solved by traditional oil-water separation technology, and the defects such as complex treatment unit, low treatment efficiency, high treatment cost, poor adaptability of demulsifier and large secondary pollution are all fixed, therefore, the special material with feature of surface wetting can be truly applied to water treatment engineering.
SUMMARY In order to solve the defects and problems existing in the prior art in the field of demulsification, purification and separation of emulsified wastewater, this invention provides a demulsification, purification and separation device based on superhydrophilic/superlipophilic mesh membrane and superhydrophobic/superoleophilic sponge with special material with feature of surface wetting.The device has the characteristics of low manufacturing cost, simple treatment, high efficiency, strong adaptability, low treatment cost and less secondary pollution, and is very suitable for demulsification and purification of emulsified wastewater. Once the device is popularized and implemented, it will be possible to solve the problems existing in the previous demulsification and deoiling technology. The technical scheme adopted by the invention to solve the technical problems is as follows: (1) Modifying The surface micro-morphology and wetting characteristics of stainless steel mesh by chemical surface treatment technology, and the stainless steel mesh is made into a mesh membrane with superhydrophilic/superlipophilic with feature of surface wetting, which is used as the core processing component of emulsified wastewater treatment device. (2) Immersing melamine sponge in octadecyl trichlorosilane for surface treatment to obtain sponge with feature of surface wetting of superhydrophobic/superlipophilic sponge, which is used as the core treatment component of emulsified wastewater treatment device. (3) Constructing a cylindrical centrifugal separation device that consists of oil inlet, centrifugal pump, spiral stirrer, superhydrophilic/superlipophilic mesh membrane layer, superhydrophobic/superlipophilic sponge layer, sponge extrusion plate, water outlet and oil outlet. (4) Because the dispersed oil droplets of emulsified wastewater are lighter than water, they will be more distributed inside the cyclone while water will be more outside under centrifugal separation. When the dispersed oil droplets distributed inside to contact the superhydrophilic/superlipophilic mesh membrane, the dispersed oil droplets will quickly infiltrate and spread on the surface of the mesh membrane, resulting in the destruction of dispersion steady state. Meanwhile, oil and water will pass through the mesh membrane and continue contacting with the superhydrophobic/superlipophilic sponge, in where the oil will be captured by the superlipophilic sponge. (5) When the emulsified wastewater gradually becomes clear, the device opens the water outlet, and the purified clear water flows out from the water outlet. After the sponge is used for a period of time, the sponge squeezing plate squeezes the sponge and the squeezed oil flows out from the oil outlet. After the above treatment, the emulsified wastewater can be completely purified, and the purification rate can reach over 98%. The advantages of this invention are: (1) Compared with the current demulsification and purification technology of emulsified wastewater, the demulsification and purification process can be completed at one time with fewer treatment units, and the costs of treatment units and equipment investment and treatment are all lower than the prior art. (2) Fully exploiting the feature of highly efficient oil-water separation materials on special interface of water and oil to rapidly realize the demulsification and separation of water and oil with remarkable separation effect and high treatment efficiency. (3) The demulsification purification and separation device provided by this invention does not need to use demulsifiers, adsorbents and other raw materials that cause environmental pollution and increase the treatment cost, it provides a treatment process that is clean and environment-friendly with strong adaptability, and it can be applied for treating various emulsified wastewater, therefore, the invention solves the technical bottleneck problem existing in the prior oil-water separation technology.
BRIEF DESCRIPTION OF THE FIGURES The present invention will be further explained with reference to the attached drawings and examples, with reference to the attached figure 1. The centrifugal pump drives the paddle 1 to rotate, so that the emulsified wastewater in the device rotates. The dispersed oil droplets are wetting and spreading on the surface of the super-lipophilic/super-hydrophilic mesh 2 after contact, and passing through the mesh under the centrifugal force, and continue contacting with the super-lipophilic/super-hydrophobic sponge 3. During the contact process, the oil is gradually captured by the sponge, the water is blocked and becomes clear gradually, and the separated water is discharged from the outlet 4, while the oil is discharged from the outlet 5.
DESCRIPTION OF THE INVENTION The following embodiment describes the method the invention applies for demulsification and purification of the emulsified wastwater (1) Immersing 304 stainless steel mesh with a pore diameter of 0.1Mm in a solution consisting of 1M copper chloride and 1m hydrochloric acid for 16s, then taking it out to make it stand in the air to dry, washing with deionized water and drying it, thus obtaining a stainless steel mesh membrane with super hydrophilic/super lipophilic with feature of surface wetting. (2) The melamine sponge was immersed in octadecyltrichlorosilane for surface treatment for 24h, obtaining the hydrophobic/super lipophilic sponge with feature of surface wetting. (3) The superhydrophilic/superlipophilic mesh membrane and super hydrophobic/superlipophilic sponge are respectively installed near the center of the cylindrical separation tank in the order of inside first and then outside. (4) The centrifugal pump and rotating paddle are located in the center of the cylindrical device to ensure that the rotating centrifugal force uniformly drives the fluid to rotate (5) The annular sponge extrusion plate is located above the cylindrical device, and does not contact with the sponge at ordinary times, and intermittently extrudes the sponge to discharge oil.
Claims (1)
- THE CLAIMS DEFINING THE INVENTION ARE AS FOLLOWS: 1. Deoiling and purification device for emulsified wastewater is characterized in (1) Immersing 304 stainless steel mesh with a pore diameter of 0.1Mm in a solution consisting of 1M copper chloride and 1m hydrochloric acid for 16s, then taking it out to make it stand in the air to dry, washing with deionized water and drying it, thus obtaining a stainless steel mesh membrane with super hydrophilic/super lipophilic with feature of surface wetting. (2) The melamine sponge was immersed in octadecyltrichlorosilane for surface treatment for 24h, obtaining the hydrophobic/super lipophilic sponge with feature of surface wetting. (3) The superhydrophilic/superlipophilic mesh membrane and superhydrophobic/superlipophilic sponge are respectively installed near the center of the cylindrical separation tank in the order of inside first and then outside. (4) The centrifugal pump and rotating paddle are located in the center of the cylindrical device to ensure that the rotating centrifugal force uniformly drives the fluid to rotate. (5) The annular sponge extrusion plate is located above the cylindrical device, and does not contact with the sponge at ordinary times, and intermittently extrudes the sponge to discharge oil.FIGURES 1/1Figure 1
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103727A AU2021103727A4 (en) | 2021-06-29 | 2021-06-29 | Deoiling and purification device for emulsified wastewater |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| AU2021103727A AU2021103727A4 (en) | 2021-06-29 | 2021-06-29 | Deoiling and purification device for emulsified wastewater |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| AU2021103727A4 true AU2021103727A4 (en) | 2021-08-19 |
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ID=77274298
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2021103727A Ceased AU2021103727A4 (en) | 2021-06-29 | 2021-06-29 | Deoiling and purification device for emulsified wastewater |
Country Status (1)
| Country | Link |
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| AU (1) | AU2021103727A4 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115178104A (en) * | 2022-08-15 | 2022-10-14 | 四川大学 | Super-hydrophobic particle dotted super-hydrophilic net film, preparation method and application thereof |
-
2021
- 2021-06-29 AU AU2021103727A patent/AU2021103727A4/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115178104A (en) * | 2022-08-15 | 2022-10-14 | 四川大学 | Super-hydrophobic particle dotted super-hydrophilic net film, preparation method and application thereof |
| CN115178104B (en) * | 2022-08-15 | 2023-05-12 | 四川大学 | Super-hydrophobic particle-decorated super-hydrophilic omentum, preparation method and application thereof |
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| Date | Code | Title | Description |
|---|---|---|---|
| FGI | Letters patent sealed or granted (innovation patent) | ||
| MK22 | Patent ceased section 143a(d), or expired - non payment of renewal fee or expiry |