KR101791307B1 - Apparatus for purifying water and method for purifying water using the same - Google Patents
Apparatus for purifying water and method for purifying water using the same Download PDFInfo
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- KR101791307B1 KR101791307B1 KR1020150135941A KR20150135941A KR101791307B1 KR 101791307 B1 KR101791307 B1 KR 101791307B1 KR 1020150135941 A KR1020150135941 A KR 1020150135941A KR 20150135941 A KR20150135941 A KR 20150135941A KR 101791307 B1 KR101791307 B1 KR 101791307B1
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- water
- pipe
- treated water
- filtration
- membrane
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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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
- B01D67/0079—Manufacture of membranes comprising organic and inorganic components
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/28—Treatment of water, waste water, or sewage by sorption
- C02F1/281—Treatment of water, waste water, or sewage by sorption using inorganic sorbents
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
-
- 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
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/10—Solids, e.g. total solids [TS], total suspended solids [TSS] or volatile solids [VS]
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2209/00—Controlling or monitoring parameters in water treatment
- C02F2209/20—Total organic carbon [TOC]
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Nanotechnology (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The water treatment apparatus of the present invention comprises: a first filtering unit for filtering raw water and discharging first treated water and first concentrated water; A second filtration unit for filtrating the introduced first treated water to discharge the second treated water and the second concentrated water; And a graining oxide contact portion for filtering the introduced first concentrated water and the second concentrated water by a filtration member to produce a third treated water, wherein the third treated water is passed through the sixth pipe through the sixth pipe 1 filtration unit.
Description
The present invention relates to a water treatment apparatus and a water treatment method using the water treatment apparatus.
Recently, interest in water scarcity has been increasing, and research on the water treatment method of purifying and reusing water has been actively carried out. Among them, the membrane filtration process is evaluated to be suitable as a water treatment method. However, due to the characteristics of the membrane filtration process, the concentrated water generated in the process is discharged, resulting in a problem that the recovery rate of the entire process is lowered.
As a technique that can increase the recovery rate, the concentrated water is recycled to the raw water. In this case, as the recycled water volume increases, the concentration of the contaminant in the concentrated water increases, There is a problem. There are various methods to solve this problem, but the proposed processes have a complicated process and high design cost through various unit processes.
Therefore, there is a need for a water treatment method that can increase the recovery rate while the process is simple.
An object of the present invention is to provide a water treatment apparatus capable of recovering the entire amount of concentrated water and a water treatment method using the same.
Another object of the present invention is to provide a water treatment apparatus having an excellent level of concentrated water treatment and a concentrated water recovery process, and a water treatment method using the same.
The above and other objects of the present invention can be achieved by the present invention described below.
A water treatment apparatus, which is one aspect of the present invention, includes a first filtering unit for filtering raw water and discharging first treated water and first concentrated water; A second filtration unit for filtrating the introduced first treated water to discharge the second treated water and the second concentrated water; And a graining oxide contact portion for filtering the introduced first concentrated water and the second concentrated water by a filtration member to produce a third treated water, wherein the third treated water is passed through the sixth pipe through the sixth pipe 1 filtration unit.
The filter member may comprise oxidized graphene particles.
The first filtration unit may include a microfiltration membrane or an ultrafiltration membrane.
The second filtration unit may include a nanofiltration membrane or a reverse osmosis membrane.
Wherein the first filtration part or the second filtration part is provided with a filtration membrane, and the material of the filtration membrane is an inorganic membrane including at least one of a ceramic and a metal membrane; And polypropylene (PP), polyamide (PA), polyethylene (PE), polyvinylidene difluoride (PVDF), polysulfone (PS), polytetrafluoroethylene (PTFE), polyacrylonitrile And an organic film comprising at least one of cellulose acetate and cellulose acetate.
The first filtration part or the second filtration part is provided with a filtration membrane, and the filtration membrane may be a tubular membrane, a flat membrane, a bainted membrane or a hollow fiber membrane.
A measuring device for measuring at least one of total dissolved solids (TDS) and total dissolved organic carbon (TOC) of the third treated water may be provided on the sixth pipe.
The water treatment apparatus may not discharge the concentrated water.
The water treatment apparatus is characterized in that the raw water is introduced into the first filtration section through a first pipe, the first treated water flows into the second filtration section through a second pipeline, and the second treatment produced from the second filtration section Water is discharged through the third pipe, the first concentrated water flows into the oxidized graphene contact portion through the fourth pipe, and the second concentrated water flows into the oxidized graphene contact portion through the fifth pipe .
And a seventh pipe for introducing the third treated water into the second filtering unit.
The seventh pipe may be branched from the sixth pipe.
The first treated water may flow into the second filtration part through the second pipe, and the seventh pipe may be connected with the second pipe to merge.
The first concentrated water flows into the oxidized graphene contact portion through the fourth pipe, the second concentrated water flows into the oxidized graphene contact portion through the fifth pipe, and the fourth pipe flows through the fifth pipe And to join together.
The raw water may be introduced into the first filtration unit through a first pipe, and the sixth pipe may be connected to a first pipe to join the first pipe.
In another aspect of the present invention, a water treatment method includes filtering crude water to produce a first treated water and separating a first concentrated water; Filtering the first treated water to produce a second treated water and separating the second concentrated water; Filtering the first concentrated water or the second concentrated water at a contact portion of oxidized graphene to produce a third treated water; And joining the third treated water to the raw water. The water treatment method using the water treatment apparatus may further include:
The step of joining the third treated water to the raw water may include measuring at least one of total dissolved solids (TDS) and total dissolved organic carbon (TOC) of the third treated water.
The step of joining the third treated water to the raw water may be a step of joining the third treated water to the raw water or the first treated water.
The present invention has the effect of providing a water treatment apparatus capable of recovering the entire amount of concentrated water, having a high level of concentrated water treatment, simplifying the concentrated water recovery process, and a water treatment method using the same.
1 is a conceptual view schematically showing a water treatment apparatus according to one embodiment of the present invention.
2 is a conceptual diagram schematically showing a water treatment apparatus according to another embodiment of the present invention.
3 is a conceptual diagram schematically showing a water treatment apparatus according to another embodiment of the present invention.
4 is a conceptual view schematically showing a contact portion of an oxidized graphene according to an embodiment of the present invention.
Embodiments of the present application will now be described in more detail with reference to the accompanying drawings. However, the techniques disclosed in this application are not limited to the embodiments described herein but may be embodied in other forms. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. In the drawings, the width, thickness, and the like of the components are enlarged in order to clearly illustrate the components of each device. In addition, although only a part of the components is shown for convenience of explanation, those skilled in the art can easily grasp the rest of the components. It is to be understood that when an element is described above as being located above or below another element, it is to be understood that the element may be directly on or under another element, It means that it can be done. It will be apparent to those skilled in the art that various modifications and variations can be made in the present invention without departing from the spirit and scope of the invention. In the drawings, the same reference numerals denote substantially the same elements.
In the present specification, "treated" means that the fluid introduced into the filtration unit permeates the filtration membrane.
In the present specification, the term "treated water" means a portion of the fluid introduced into the filtration portion through the filtration membrane.
The term " discharge " in this specification means to finally discharge the fluid out of the system.
Hereinafter, a water treatment apparatus according to one embodiment of the present invention will be described with reference to FIG. 1 is a conceptual view schematically showing a water treatment apparatus according to one embodiment of the present invention.
Referring to FIG. 1, a water treatment apparatus according to an embodiment of the present invention includes a
The water treatment apparatus may further include a first pipe L1 through which the raw water flows into the
Specifically, the raw water flows into the
The
The
For example, the material of the filtration film is an inorganic film including at least one of ceramic and metal film; And polypropylene (PP), polyamide (PA), polyethylene (PE), polyvinylidene difluoride (PVDF), polysulfone (PS), polytetrafluoroethylene (PTFE), polyacrylonitrile An organic film comprising at least one of cellulose acetate and cellulose acetate; But is not limited thereto. The
The
The
The oxidized
The oxidized
In addition, by applying the graphene
The filtering member may use graphene oxide. Oxidized graphene not only removes traces of organic materials, inorganic substances, heavy metals, etc., but also removes aliphatic organic compounds due to hydrophobic interactions. The oxidized
In one embodiment, the filtration member may comprise oxidized graphene particles. The graphene oxide grains may have an average particle size of 10 nm to 180 nm, specifically 50 nm to 180 nm, more specifically 80 nm to 120 nm. In the above range, the graphene oxide grains are easy to handle and have an excellent filtration efficiency.
The oxidized
As shown in FIG. 4 (a), the pipe introduced into the oxidized
The oxide
In FIG. 1, the fourth pipe L4 is connected to the fifth pipe L5, but is not limited thereto. For example, the fourth pipe L4 may introduce the first or second concentrated water into the oxide
Although not shown in FIG. 1, a raw water tank may be provided before the first pipe L1, and a storage tank for storing the third treated water after the third pipe L3.
Hereinafter, a water treatment apparatus according to another embodiment of the present invention will be described with reference to FIG. 2 is a conceptual diagram schematically showing a water treatment apparatus according to another embodiment of the present invention.
Referring to FIG. 2, the water treatment apparatus according to another embodiment of the present invention further includes, on the sixth pipe L6, one of total dissolved solids (TDS) of the third treated water and total dissolved organic carbon (TOC) A measuring
Hereinafter, a water treatment apparatus according to another embodiment of the present invention will be described with reference to FIG. 3 is a conceptual diagram schematically showing a water treatment apparatus according to another embodiment of the present invention.
Referring to FIG. 3, the water treatment apparatus according to another embodiment of the present invention may further include a seventh pipe L7 for introducing the third treated water into the
In the water treatment apparatus according to another embodiment, the third process water produced in the oxide
In FIG. 3, the seventh pipe L7 is illustrated as branched from the sixth pipe L6, but the present invention is not limited thereto. For example, the seventh pipe L7 may be formed independently of the sixth pipe L6. In FIG. 3, the seventh pipe L7 is connected to the second pipe L2, but is not limited thereto. For example, the seventh pipe L7 may be formed independently of the second pipe L2.
In another aspect of the present invention, a water treatment method includes filtering crude water to produce a first treated water and separating a first concentrated water; Filtering the first treated water to produce a second treated water and separating the second concentrated water; Filtering the first concentrated water or the second concentrated water at a contact portion of oxidized graphene to produce a third treated water; And joining the third treated water to the raw water.
The step of filtering the raw water to produce the first treated water and the step of separating the first concentrated water may be performed by the first filtering unit. The step of filtering the first treated water to produce the second treated water and the step of separating the second concentrated water may be performed by the second filtering unit. The second treated water may be stored in a storage tank.
The filtration in the step of producing the third treated water by filtering the first concentrated water or the second concentrated water at the contact portion of the oxidized graphene is excellent in the filtration efficiency and the performance of the membrane is recovered even though the concentrated water is recovered and reused It may not drop.
By performing the step of joining the third treated water to the raw water, the recovery rate of the filtration membrane water treatment is remarkably increased. Specifically, the water treatment method may not produce the concentrated water, and may not discharge the concentrated water.
The step of introducing the third treated water into the raw water may include measuring at least one of total dissolved solids (TDS) and total dissolved organic carbon (TOC) of the third treated water. By measuring at least one of the total dissolved solids (TDS) and the total dissolved organic carbon (TOC) of the tertiary treatment water, the water treatment system can be efficiently managed by predicting the replacement timing of the oxidized
The step of joining the third treated water to the raw water may be a step of joining the third treated water to the raw water or the first treated water. Specifically, there is an advantage that the water treatment efficiency can be increased by introducing the third treated water into the first filtering section or the second filtering section in accordance with the degree of contamination of the third treated water.
While the present invention has been described with reference to exemplary embodiments, it is to be understood that the invention is not limited to the disclosed exemplary embodiments, but, on the contrary, It will be understood that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is to be understood, therefore, that the embodiments described above are intended to be illustrative in all respects and not restrictive.
L10: first filtration part, 30: second filtration part, 50: oxidative graphene contact part, 70: measuring device for measuring at least one of TDS and TOC, L1: first piping, L2: second piping, L3: 3 pipe, L4: fourth pipe, L5: fifth pipe, L6: sixth pipe, L7: seventh pipe
Claims (17)
A second filtration unit for filtrating the introduced first treated water to discharge the second treated water and the second concentrated water; And
An oxidized graphene contact portion for filtering the introduced first concentrated water and the second concentrated water by a filtration member to produce a third treated water;
Lt; / RTI >
Wherein the graphene oxide contacts comprise the filter member in a vessel, the filter member comprises graphene grains,
The graphene oxide grains have an average particle diameter of 10 nm to 180 nm,
Wherein the graphene oxide contact portion has an internal porosity of 50% to 90%
And the third treated water flows into the first filtering unit through a sixth pipe,
Wherein the water treatment apparatus does not discharge the concentrated water.
An inorganic film including at least one of a ceramic film and a metal film; And
(PP), polyamide (PA), polyethylene (PE), polyvinylidene difluoride (PVDF), polysulfone (PS), polytetrafluoroethylene (PTFE), polyacrylonitrile An organic film comprising at least one of acetate;
≪ / RTI >
The raw water flows into the first filtration unit through the first pipe,
The first treated water flows into the second filtering unit through the second pipe,
The second treated water produced from the second filtering unit is discharged through the third pipe,
The first concentrated water flows into the oxidized graphene contact portion through the fourth pipe,
And the second concentrated water flows into the oxidized graphene contact portion through a fifth pipe.
The second concentrated water flows into the oxidized graphene contact portion through a fifth pipe,
And the fourth pipe is connected to the fifth pipe to merge.
And the sixth pipe is connected to the first pipe to merge.
Filtering the first treated water to produce a second treated water and separating the second concentrated water;
Filtering the first concentrated water or the second concentrated water at a contact portion of oxidized graphene to produce a third treated water; And
Joining the third treated water to the raw water;
The water treatment method using the water treatment apparatus according to any one of claims 1, 3 to 7, and 9 to 14,
Priority Applications (1)
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KR1020150135941A KR101791307B1 (en) | 2015-09-24 | 2015-09-24 | Apparatus for purifying water and method for purifying water using the same |
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KR1020150135941A KR101791307B1 (en) | 2015-09-24 | 2015-09-24 | Apparatus for purifying water and method for purifying water using the same |
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KR101791307B1 true KR101791307B1 (en) | 2017-11-20 |
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CN110090563A (en) * | 2019-04-12 | 2019-08-06 | 华南理工大学 | A kind of nano hybrid film and the preparation method and application thereof of self-cleaning GO modification CNC |
KR102377664B1 (en) | 2019-05-14 | 2022-03-25 | 이정훈 | Water treatment reactor, and water treatment system and wastewater treatment system including the reactor |
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