CN111001302A - Filter element replaceable hollow fiber nanofiltration membrane group device - Google Patents
Filter element replaceable hollow fiber nanofiltration membrane group device Download PDFInfo
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- CN111001302A CN111001302A CN201911352275.0A CN201911352275A CN111001302A CN 111001302 A CN111001302 A CN 111001302A CN 201911352275 A CN201911352275 A CN 201911352275A CN 111001302 A CN111001302 A CN 111001302A
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- 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
- B01D63/02—Hollow fibre modules
- B01D63/04—Hollow fibre modules comprising multiple hollow fibre assemblies
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/027—Nanofiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
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- 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
- B01D63/02—Hollow fibre modules
- B01D63/021—Manufacturing thereof
- B01D63/022—Encapsulating hollow fibres
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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
- C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/02—Elements in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/04—Elements in parallel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2317/00—Membrane module arrangements within a plant or an apparatus
- B01D2317/06—Use of membrane modules of the same kind
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2319/00—Membrane assemblies within one housing
- B01D2319/04—Elements in parallel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Nanotechnology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Manufacturing & Machinery (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses a hollow fiber nanofiltration membrane group device with replaceable filter elements. The invention is composed of a plurality of sections of pressure-bearing containers, each section of pressure-bearing container comprises a pressure-bearing outer shell arranged outside and a plurality of hollow fiber nanofiltration membrane cores arranged in the pressure-bearing outer shell, the bottom of each section of pressure-bearing outer shell is provided with a water inlet, the top of each section of pressure-bearing outer shell is provided with a concentrated water outlet, the side edge of each section of pressure-bearing outer shell is provided with a water producing port, and the concentrated water outlet at the top of the hollow fiber nanofiltration membrane core in the last section of pressure-bearing container is converged to a total concentrated water outlet of; the pressure-bearing container is in a one-section or multi-section connection mode in the vertical direction, and a sealing device for ensuring sealing is arranged above and below each section of pressure-bearing container; the structure of each segment is consistent. The invention is provided with a plurality of sections of pressure-bearing containers which can be connected in series, each section is internally provided with a plurality of independent hollow fiber nanofiltration membrane cores, the structure is simple, the treatment efficiency and the space utilization rate of a field are high, the hollow fiber nanofiltration membrane cores can be independently replaced, and the maintenance is easy.
Description
Technical Field
The invention relates to the technical field of membrane module equipment, in particular to a hollow fiber nanofiltration membrane module device with a replaceable filter element.
Background
With the development of economic society in China, the traditional water treatment processes such as chlorination, flocculation precipitation, ion exchange and the like cannot meet the requirements of low investment, high water quality, stability and reliability. The hollow fiber membrane technology has the characteristics of low energy consumption, small device volume, easy operation, high benefit, no secondary pollution and the like, and is a resource. And (4) energy sources. Environment and the like. Nanofiltration (NF) is a membrane separation technique that is intermediate between Reverse Osmosis (RO) and Ultrafiltration (UF). Compared with a reverse osmosis membrane, the nanofiltration membrane has the characteristics of low operation pressure, large pure water flux, low operation cost and the like, so that the nanofiltration membrane can be used in various fields of treatment, separation and purification and the like of high-salt-content industrial wastewater, pharmaceutical and chemical wastewater, dye wastewater and the like.
The nanofiltration membrane can be roll type nanofiltration, hollow fiber nanofiltration, plate-frame type nanofiltration and the like. In any case, in the actual use process, the arrangement form of the components is basically horizontal, and a plurality of nanofiltration membrane components are required to be connected in series and in parallel to improve the processing capacity, so that a larger occupied area is required to complete the expected processing task. And it is impossible to determine which component is leaking or contaminated online.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the defects in the prior art and provide the replaceable filter element type hollow fiber nanofiltration membrane module with high space utilization rate, high integration level, high treatment efficiency and low manufacturing and operating cost.
The invention relates to a filter element replaceable hollow fiber nanofiltration membrane group device, which is realized by the following technical scheme that the device comprises a plurality of sections of pressure-bearing containers, each section of pressure-bearing container comprises a pressure-bearing outer shell arranged outside and a plurality of hollow fiber nanofiltration membrane cores arranged in the pressure-bearing outer shell, the bottom of each section of pressure-bearing outer shell is provided with a water inlet, the top of each section of pressure-bearing outer shell is provided with a concentrated water outlet, the side edge of each section of pressure-bearing outer shell is provided with a water outlet, raw water enters the first section of pressure-bearing container through a total water inlet arranged at the bottom of the first section of pressure-bearing container at the lowest part, then enters the hollow fiber nanofiltration membrane cores through the water inlets at the bottoms of the hollow fiber nanofiltration membrane cores in the first section of pressure-bearing container, concentrated water is collected to the water inlet at the bottoms of the hollow, a concentrated water outlet at the top of the hollow fiber nanofiltration membrane core inside the last section of pressure-bearing container is converged to a total concentrated water outlet of the hollow fiber nanofiltration membrane group device; the pressure-bearing container is in a one-section or multi-section connection mode in the vertical direction, and a sealing device for ensuring sealing is arranged above and below each section of pressure-bearing container; the structure of each segment is consistent.
The sealing device comprises a sealing ring arranged on a membrane core of the hollow fiber nanofiltration membrane and a filter element fixing disk arranged in the pressure-bearing container, wherein the sealing ring is an O-shaped ring or a Y-shaped ring, and the sealing ring ensures effective isolation of water inlet and water production.
The upper end and the lower end of the membrane core are provided with fastening devices for sealing, and the form adopted for realizing sealing and fixing is provided with threads, a hoop or a clamping sleeve.
Except for the first section at the bottom of the multi-section pressure-bearing container, the bottom of each section of pressure-bearing container is provided with a produced water collecting chamber and a concentrated drainage collecting pipeline.
A plurality of hollow fiber nanofiltration membrane cores are concentrated in a section of pressure-bearing container, a plurality of sections of pressure-bearing containers can be connected in series up and down, and a plurality of groups of pressure-bearing containers can be connected in series or in parallel according to actual requirements; the membrane core of the hollow fiber nanofiltration membrane and the combiner are isolated from each other by a sealing device; the membrane core of the hollow fiber nanofiltration membrane can be freely installed and disassembled, so that the maintenance is convenient; compared with a roll-type nanofiltration membrane and a plate-type nanofiltration membrane, the invention can fully utilize space and realize high-efficiency and stable water treatment effect on the basis of saving basic investment.
Compared with the prior art, the invention has the beneficial effects that:
the invention is designed with a plurality of sections of pressure-bearing containers which can be connected in series, each section is internally provided with a plurality of independent hollow fiber nanofiltration membrane cores, the structure is simple, the treatment efficiency and the space utilization rate of a field are high, the hollow fiber nanofiltration membrane cores can be independently replaced, the maintenance is easy, each section of produced water can be independently or intensively collected, and the flexibility of the filtration treatment process is high.
Drawings
FIG. 1 is a schematic structural diagram of a hollow fiber nanofiltration membrane module;
fig. 2 is a schematic view of the a-a interface of fig. 1.
In the figure: 1-a total water inlet of a membrane group device, 2 a-a first section water producing port of the membrane group device, 2 b-a second section water producing port of the membrane group device, 3-an interface flange, 4 a-a first section pressure-resistant shell, 4 b-a second section pressure-resistant shell, 5-a produced water collecting chamber, 6-a concentrated discharging port of the membrane group device, 7-a hollow fiber nanofiltration membrane core, 8-a filter core fixing disc, 9 a-a first section water inlet pipeline and 9 b-a second section water inlet pipeline.
Detailed Description
The invention is described in further detail below with reference to the figures and specific examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, a filtrate to be treated firstly enters a first section of water inlet pipeline 9a through a main water inlet 1 of a membrane group device, and then enters the inside of the first section of hollow fiber nanofiltration membrane group device, hollow fiber nanofiltration membrane cores 7 are arranged on a filter core fixing disk 8 in a mode shown in fig. 2, the hollow fiber nanofiltration membrane cores 7 and the filter core fixing disk 8 are sealed through O-shaped sealing rings or Y-shaped sealing rings, the hollow fiber nanofiltration membrane cores 7 are fastened and sealed outside round holes of the filter core fixing disk 8 through threads, buckles or flanges and the like, and the embodiment adopts a thread fixing and sealing mode; as shown in fig. 2, the distribution form of the nanofiltration membrane cores 7 on the filter element fixing disc 8 is not limited to 4 circumferential uniform distributions, a water inlet pipeline 9 is arranged in the middle of each filter membrane core, and the number and the distribution form of the hollow fiber nanofiltration membrane cores 7 on the filter element fixing disc 8 are increased or decreased according to the physical requirements; the first-stage filtrate is discharged through a first-stage water producing port 2a of the membrane module.
The first section of liquid to be treated enters a membrane core water inlet at the bottom of a hollow fiber nanofiltration membrane core 7 through a first section of water inlet pipeline 9a and then enters the hollow fiber nanofiltration membrane core 7, the first section of concentrated solution flows into a second section of water inlet pipeline 9b after being gathered through a concentrated water outlet at the top of the hollow fiber nanofiltration membrane core 7, the filtering mode of the liquid to be treated in a second section of pressure-resistant shell is consistent with that of the first section, and the second section of filtered solution is discharged through a second section of water outlet 2b of a membrane group device; the filtrate of the second section is collected in the produced water collecting chamber 5 and discharged out of the pressure-bearing shell, whether the two sections of filtrate are combined or not is determined according to actual requirements, and the embodiment adopts a mode of independently recovering the two sections of filtrate.
The concentrated solution of the second section is collected to the concentrated discharge port 6 of the membrane group device for uniform discharge after passing through the concentrated discharge port at the top end of the membrane core of the hollow fiber nanofiltration membrane in the second section.
The filter element fixing disc at the lower part of each section of the hollow fiber nanofiltration membrane group device is fixed with the pressure-resistant shell in a sealing manner by welding, the filter element fixing disc at the upper part of each section of the pressure-resistant shell is of a detachable structure, the detachable filter element fixing disc is sealed with the pressure-resistant shell by an O-shaped sealing ring, and the filter element fixing disc is sealed with the pressure-resistant shell in a pressure-bearing manner by a flange; in the embodiment, the pressure-resistant outer shell 4a of the first section of hollow fiber nanofiltration membrane group device is fastened with the filter core fixing disk 8 through the interface flange 3, and the pressure-resistant outer shell 4b of the second section of hollow fiber nanofiltration membrane group device is fastened with the filter core fixing disk 8 through the interface flange 3.
The hollow fiber nanofiltration membrane group device can be set to be in a multi-section series connection mode, the number of the series connection sections is determined according to the field requirement, and the two-section series connection mode is adopted in the embodiment.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (4)
1. The filter element replaceable hollow fiber nanofiltration membrane group device is characterized by comprising a plurality of sections of pressure-bearing containers, each section of pressure-bearing container comprises a pressure-bearing shell arranged outside and a plurality of hollow fiber nanofiltration membrane cores arranged in the pressure-bearing shell, a water inlet is arranged at the bottom of each section of pressure-bearing shell, a concentrated water outlet is arranged at the top of each section of pressure-bearing shell, a water producing port is arranged on the side edge of each section of pressure-bearing shell, raw water enters the inside of the first section of pressure-bearing container through a total water inlet arranged at the bottom of the first section of pressure-bearing container at the lowest part, then enters the inside of the hollow fiber nanofiltration membrane cores through a water inlet at the bottom of the hollow fiber nanofiltration membrane cores inside the first section of pressure-bearing container, concentrated drainage is collected to a water inlet at the bottom of the hollow fiber nanofiltration membrane cores inside the next section of pressure-bearing container through a concentrated water outlet at the top of the hollow fiber nanofiltration A total concentration discharge port of the nanofiltration membrane group device; the pressure-bearing container is in a one-section or multi-section connection mode in the vertical direction, and a sealing device for ensuring sealing is arranged above and below each section of pressure-bearing container; the structure of each segment is consistent.
2. The filter element replaceable hollow fiber nanofiltration membrane module according to claim 1, wherein the sealing device comprises a sealing ring arranged on the hollow fiber nanofiltration membrane core and a filter element fixing disc arranged in the pressure-bearing container, the sealing ring is an O-shaped ring or a Y-shaped ring, and the sealing ring ensures effective isolation of water inlet and water production.
3. The filter element-replaceable hollow fiber nanofiltration membrane module according to claim 1, wherein the upper and lower ends of the hollow fiber nanofiltration membrane core are provided with fastening devices for sealing, and the fastening devices are in the form of threads, clamps or clamping sleeves for realizing sealing and fixing.
4. The filter element replaceable hollow fiber nanofiltration membrane module according to claim 1, wherein the multistage pressure-bearing container is provided with a produced water collection chamber and a concentrated drainage collecting pipe at the bottom of each pressure-bearing container except for the first section at the bottom.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352275.0A CN111001302A (en) | 2019-12-25 | 2019-12-25 | Filter element replaceable hollow fiber nanofiltration membrane group device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911352275.0A CN111001302A (en) | 2019-12-25 | 2019-12-25 | Filter element replaceable hollow fiber nanofiltration membrane group device |
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| CN111001302A true CN111001302A (en) | 2020-04-14 |
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| CN201911352275.0A Pending CN111001302A (en) | 2019-12-25 | 2019-12-25 | Filter element replaceable hollow fiber nanofiltration membrane group device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515512A (en) * | 2022-03-26 | 2022-05-20 | 付建梅 | Hydrophilic polyvinylidene fluoride nanofiltration membrane and preparation method thereof |
-
2019
- 2019-12-25 CN CN201911352275.0A patent/CN111001302A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114515512A (en) * | 2022-03-26 | 2022-05-20 | 付建梅 | Hydrophilic polyvinylidene fluoride nanofiltration membrane and preparation method thereof |
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