CN110871033A - Energy-saving type rotary membrane filtering system and method - Google Patents
Energy-saving type rotary membrane filtering system and method Download PDFInfo
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- CN110871033A CN110871033A CN201911244521.0A CN201911244521A CN110871033A CN 110871033 A CN110871033 A CN 110871033A CN 201911244521 A CN201911244521 A CN 201911244521A CN 110871033 A CN110871033 A CN 110871033A
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- liquid
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- collecting pipe
- hydraulic turbine
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- 239000012528 membrane Substances 0.000 title claims abstract description 47
- 238000001914 filtration Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 14
- 239000007788 liquid Substances 0.000 claims abstract description 120
- 239000012466 permeate Substances 0.000 claims description 25
- 239000012530 fluid Substances 0.000 claims description 7
- 230000008878 coupling Effects 0.000 claims description 4
- 238000010168 coupling process Methods 0.000 claims description 4
- 238000005859 coupling reaction Methods 0.000 claims description 4
- 238000000926 separation method Methods 0.000 abstract description 5
- 230000000694 effects Effects 0.000 abstract description 4
- 230000004907 flux Effects 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000011010 flushing procedure Methods 0.000 abstract 1
- 238000005374 membrane filtration Methods 0.000 description 7
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 6
- 238000000746 purification Methods 0.000 description 6
- 238000011001 backwashing Methods 0.000 description 4
- 238000007599 discharging Methods 0.000 description 4
- 229910002092 carbon dioxide Inorganic materials 0.000 description 3
- 239000001569 carbon dioxide Substances 0.000 description 3
- 238000005265 energy consumption Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000012263 liquid product Substances 0.000 description 3
- 238000009295 crossflow filtration Methods 0.000 description 2
- 239000012465 retentate Substances 0.000 description 2
- 235000013361 beverage Nutrition 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- 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
- B01D63/16—Rotary, reciprocated or vibrated modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/02—Membrane cleaning or sterilisation ; Membrane regeneration
-
- 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
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/04—Backflushing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2321/00—Details relating to membrane cleaning, regeneration, sterilization or to the prevention of fouling
- B01D2321/18—Use of gases
Abstract
The invention discloses an energy-saving rotary diaphragm filtering system and a method, the system comprises a feeding liquid tank, a feeding pump, a coarse filter and a permeation liquid tank, a rotary diaphragm filter and a hydraulic turbine, wherein the rotary diaphragm filter comprises a shell, a central liquid collecting pipe is arranged in the shell, one end of the central liquid collecting pipe is a liquid inlet and outlet, the other end of the central liquid collecting pipe is arranged in a closed manner and is connected with one end of a connecting shaft, the other end of the connecting shaft penetrates through the shell and is connected with the hydraulic turbine, and a rotary diaphragm is arranged on the outer surface of a central liquid collecting pipe 7; the energy-saving type rotary membrane filtering system provided by the invention can be used for dynamically filtering liquid by rotating the rotary membrane, is suitable for filtering and separating high-suspended substance liquid, and has the advantages of good separation effect and wide application range; the rotation of the rotating diaphragm can provide power by recovering the residual pressure of trapped liquid through a hydraulic turbine, and external power is not required to be provided independently, so that energy is saved; after the rotary membrane is polluted, the flux can be recovered by using a back flushing pump to couple gas with the permeation liquid, and the method is green and pollution-free.
Description
Technical Field
The invention belongs to the field of liquid purification, and particularly relates to an energy-saving type rotary membrane filtering system and method.
Background
In recent years, with the continuous improvement of the industrialization level of China, the national economy is rapidly developed, and the requirements on the safety and the reliability of liquid products such as water, beverages and the like are higher and higher. However, due to extensive industrial basic development in China, frequent liquid pollution accidents cause a lot of polluted liquid products to flow into the market, and great hidden dangers are brought to the health of people. Therefore, a liquid purification technology is required to ensure product safety, and separation membrane filtration has irreplaceable important roles as an important means of liquid purification.
At present, full-flow filtration and cross-flow filtration are commonly used in the liquid separation membrane filtration process. Full-flow filtration is not suitable for high-suspended matter liquid filtration because all liquid impurities are intercepted on the raw material side of the membrane; the cross-flow filtration is carried out by increasing the liquid flow rate on the surface of the membrane, the effect is relatively good, but the problem of high energy consumption exists. Therefore, the development of a separation membrane filtration technology with high efficiency and low energy consumption is urgently needed.
Liquid purification, as a technology related to the national civilization, is a persistent issue. In order to solve the problems of low efficiency and high energy consumption of liquid product concentration and purification in the current food industry, a more efficient and feasible liquid purification solution needs to be searched.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides an energy-saving rotary membrane filtering system.
The second purpose of the invention is to provide an energy-saving type rotary membrane filtration method.
The technical scheme of the invention is summarized as follows:
an energy-saving rotary diaphragm filtering system comprises a feeding liquid tank 1, a feeding pump 2, a coarse filter 3, a permeate liquid tank 9, a rotary diaphragm filter 4 and a hydraulic turbine 10, wherein the rotary diaphragm filter 4 comprises a shell 5, a central liquid collecting pipe 7 is arranged in the shell, one end of the central liquid collecting pipe is a liquid inlet/outlet 16, the other end of the central liquid collecting pipe 7 is sealed and connected with one end of a connecting shaft 11, the other end of the connecting shaft 11 penetrates through the shell to be connected with the hydraulic turbine 10, a rotary diaphragm 6 is arranged on the outer surface of the central liquid collecting pipe 7, and the inside of the rotary diaphragm 6 is communicated with the inside of the central liquid collecting pipe 7; the feed liquid box 1 is sequentially connected with a feed pump 2, a coarse filter 3 and a rotary diaphragm filter 4 through pipelines, a liquid inlet and a liquid outlet 16 are connected with a first valve 8 through pipelines and then connected with a permeate liquid box 9, the permeate liquid box 9 is sequentially connected with a back flush pump 14 and a fourth valve 15 through pipelines and then connected with the liquid inlet and the liquid outlet 16, and an air inlet pipe is connected with a third valve 13 and then connected with the back flush pump 14; the retentate outlet 17 of the rotary membrane filter is connected via a line to the liquid inlet 18 of the hydraulic turbine 10, and the bottom of the hydraulic turbine 10 is provided with a line to the second valve 12.
An energy-saving type rotary membrane filtering method comprises the following steps:
1) the energy-saving rotary membrane filtration system is used;
2) closing the III valve 13 and the IV valve 15, and opening the I valve 8 and the II valve 12; starting a feed pump 2, enabling feed liquid in a feed liquid tank 1 to be pressurized by the feed pump 2, then entering a coarse filter 3 for filtering, then entering a rotary membrane filter 4 for filtering through a rotary membrane 6, collecting the feed liquid through a central liquid collecting pipe 7, passing through a liquid inlet and outlet 16, then passing through a valve I8, and entering a permeate liquid tank 9; trapped fluid enters the hydraulic turbine 10 through a pipeline through a trapped fluid outlet 17 to do work, and is decompressed through a second valve 12 and then discharged; the hydraulic turbine 10 is coupled with the central liquid collecting pipe 7 through a coupling shaft 11 to drive the rotary diaphragm 6 to rotate.
The energy-saving rotary membrane filtering system can carry out backwashing in two modes:
the first method is as follows: closing a third valve 13 and a first valve 8, opening a second valve 12 and a fourth valve 15, pressurizing permeate in a permeate tank 9 by a backflushing pump 14, then entering a central liquid collecting pipe 7 of the rotary membrane filter 4 through a liquid inlet and outlet 16, backflushing the permeate by permeating the rotary membrane 6, and then discharging the permeate from the second valve 12 arranged at the bottom of the hydraulic turbine 10 through a trapped liquid outlet 17 of the rotary membrane filter and a liquid inlet 18 of the hydraulic turbine 10;
the second method comprises the following steps: closing the first valve 8, opening the second valve 12, the third valve 13 and the fourth valve 15, pressurizing the permeate liquid in the permeate liquid tank 9 by a backflushing pump 14, mixing the permeate liquid with gas, entering a central liquid collecting pipe 7 of the rotary membrane filter 4 through a liquid inlet and outlet 16, backflushing the permeate liquid by permeating the rotary membrane 6, passing through a trapped liquid outlet 17 of the rotary membrane filter and a liquid inlet 18 of the hydraulic turbine 10, and discharging the gas from the second valve 12 arranged at the bottom of the hydraulic turbine 10, wherein the gas is air or carbon dioxide gas.
The energy-saving rotary membrane filtering system can alternately perform filtering and backwashing.
The invention has the advantages that:
1. the energy-saving type rotary membrane filtering system provided by the invention can be used for dynamically filtering liquid by rotating the rotary membrane, is suitable for filtering and separating high-suspended substance liquid, and has the advantages of good separation effect and wide application range;
2. the rotation of the rotating diaphragm of the invention can provide power by recovering the residual pressure of trapped fluid through the hydraulic turbine without independently providing external power, thereby having obvious energy-saving effect;
3. after the rotary membrane is polluted, the flux recovery can be carried out by using the permeate liquid coupling gas through the recoil pump, and the gas source is air or carbon dioxide, so that the rotary membrane has the advantages of being green and free of pollution.
Drawings
FIG. 1 is a schematic view of an energy-saving rotary membrane filtration system according to the present invention.
Detailed Description
The invention is further described with reference to the following figures and specific embodiments.
An energy-saving type rotary membrane filtering system is shown in figure 1 and comprises a feeding liquid tank 1, a feeding pump 2, a coarse filter 3, a permeation liquid tank 9, a rotary membrane filter 4 and a hydraulic turbine 10, wherein the rotary membrane filter 4 comprises a shell 5, a central liquid collecting pipe 7 is arranged in the shell, one end of the central liquid collecting pipe is a liquid inlet/outlet 16, the other end of the central liquid collecting pipe 7 is sealed and connected with one end of a connecting shaft 11, the other end of the connecting shaft 11 penetrates through the shell and is connected with the hydraulic turbine 10, a rotary membrane 6 is arranged on the outer surface of the central liquid collecting pipe 7, and the interior of the rotary membrane 6 is communicated with the interior of the central liquid collecting pipe 7; the feed liquid box 1 is sequentially connected with a feed pump 2, a coarse filter 3 and a rotary diaphragm filter 4 through pipelines, a liquid inlet and a liquid outlet 16 are connected with a first valve 8 through pipelines and then connected with a permeate liquid box 9, the permeate liquid box 9 is sequentially connected with a back flush pump 14 and a fourth valve 15 through pipelines and then connected with the liquid inlet and the liquid outlet 16, and an air inlet pipe is connected with a third valve 13 and then connected with the back flush pump 14; the retentate outlet 17 of the rotary membrane filter is connected via a line to the liquid inlet 18 of the hydraulic turbine 10, and the bottom of the hydraulic turbine 10 is provided with a line to the second valve 12.
Example 1
An energy-saving type rotary membrane filtering method comprises the following steps:
1) the energy-saving rotary membrane filtration system is used;
2) closing the III valve 13 and the IV valve 15, and opening the I valve 8 and the II valve 12; starting a feed pump 2, enabling feed liquid in a feed liquid tank 1 to be pressurized by the feed pump 2, then entering a coarse filter 3 for filtering, then entering a rotary membrane filter 4 for filtering through a rotary membrane 6, collecting the feed liquid through a central liquid collecting pipe 7, passing through a liquid inlet and outlet 16, then passing through a valve I8, and entering a permeate liquid tank 9; trapped fluid enters the hydraulic turbine 10 through a pipeline through a trapped fluid outlet 17 to do work, and is decompressed through a second valve 12 and then discharged; the hydraulic turbine 10 is coupled with the central liquid collecting pipe 7 through a coupling shaft 11 to drive the rotary diaphragm 6 to rotate.
Example 2
The energy-saving rotary membrane filtering system can carry out backwashing in two modes:
the first method is as follows: closing a third valve 13 and a first valve 8, opening a second valve 12 and a fourth valve 15, pressurizing permeate in a permeate tank 9 by a backflushing pump 14, then entering a central liquid collecting pipe 7 of the rotary membrane filter 4 through a liquid inlet and outlet 16, backflushing the permeate by permeating the rotary membrane 6, and then discharging the permeate from the second valve 12 arranged at the bottom of the hydraulic turbine 10 through a trapped liquid outlet 17 of the rotary membrane filter and a liquid inlet 18 of the hydraulic turbine 10;
the second method comprises the following steps: closing the first valve 8, opening the second valve 12, the third valve 13 and the fourth valve 15, pressurizing the permeate liquid in the permeate liquid tank 9 by a backflushing pump 14, mixing the permeate liquid with gas, entering a central liquid collecting pipe 7 of the rotary membrane filter 4 through a liquid inlet and outlet 16, backflushing the permeate liquid by permeating the rotary membrane 6, passing through a trapped liquid outlet 17 of the rotary membrane filter and a liquid inlet 18 of the hydraulic turbine 10, and discharging the gas from the second valve 12 arranged at the bottom of the hydraulic turbine 10, wherein the gas is air or carbon dioxide gas.
Filtration and backwashing are performed alternately.
Claims (2)
1. An energy-saving rotary diaphragm filtering system comprises a feeding liquid tank (1), a feeding pump (2), a coarse filter (3) and a permeation liquid tank (9), and is characterized by further comprising a rotary diaphragm filter (4) and a hydraulic turbine (10), wherein the rotary diaphragm filter (4) comprises a shell (5), a central liquid collecting pipe (7) is arranged inside the shell, one end of the central liquid collecting pipe is a liquid inlet/outlet (16), the other end of the central liquid collecting pipe (7) is sealed and connected with one end of a connecting shaft (11), the other end of the connecting shaft (11) penetrates through the shell and is connected with the hydraulic turbine (10), a rotary diaphragm (6) is arranged on the outer surface of the central liquid collecting pipe (7), and the inside of the rotary diaphragm (6) is communicated with the inside of the central liquid collecting pipe (7); the feed liquid box (1) is sequentially connected with a feed pump (2), a coarse filter (3) and a rotary membrane filter (4) through pipelines, a liquid inlet and a liquid outlet (16) are connected with a valve I (8) through a pipeline and then connected with a permeation liquid box (9), the permeation liquid box (9) is sequentially connected with a back flush pump (14) and a valve IV (15) through pipelines and then connected with the liquid inlet and the liquid outlet (16), and an air inlet pipe is connected with a valve III (13) and then connected with the back flush pump (14); the trapped liquid outlet (17) of the rotary membrane filter is connected with a liquid inlet (18) of the hydraulic turbine (10) through a pipeline, and the bottom of the hydraulic turbine (10) is provided with a pipeline connected with a second valve (12).
2. An energy-saving type rotary membrane filtering method is characterized by comprising the following steps:
1) using the system of claim 1;
2) closing the III valve (13) and the IV valve (15), and opening the I valve (8) and the II valve (12); starting a feed pump (2), pressurizing feed liquid in a feed liquid tank (1) through the feed pump (2), then filtering the feed liquid in a coarse filter (3), then filtering the feed liquid in a rotary membrane filter (4) through a rotary membrane (6), collecting the feed liquid through a central liquid collecting pipe (7), passing through a liquid inlet and outlet (16), passing through a valve I (8), and entering a permeate liquid tank (9); trapped fluid enters a hydraulic turbine (10) through a pipeline through a trapped fluid outlet (17) to do work, and is discharged after being decompressed through a second valve (12); the hydraulic turbine (10) is coupled with the central liquid collecting pipe (7) through a coupling shaft (11) to drive the rotary membrane (6) to rotate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244521.0A CN110871033A (en) | 2019-12-06 | 2019-12-06 | Energy-saving type rotary membrane filtering system and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911244521.0A CN110871033A (en) | 2019-12-06 | 2019-12-06 | Energy-saving type rotary membrane filtering system and method |
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| Publication Number | Publication Date |
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| CN110871033A true CN110871033A (en) | 2020-03-10 |
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| CN201911244521.0A Pending CN110871033A (en) | 2019-12-06 | 2019-12-06 | Energy-saving type rotary membrane filtering system and method |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1264626A1 (en) * | 2001-06-07 | 2002-12-11 | CHOI, Choong Hyun | Variable pore micro filter having simple and compact structure capable of side stream filtration and cross flow filtration |
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| CN102895879A (en) * | 2012-09-03 | 2013-01-30 | Acs农化系统有限公司 | Method and apparatus for improving membrane filtration process |
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| CN204619756U (en) * | 2014-12-04 | 2015-09-09 | 宗秀兰 | A kind of novel dynamic membrane filter system |
| CN108939922A (en) * | 2018-08-07 | 2018-12-07 | 飞潮（无锡）过滤技术有限公司 | A kind of rotary type ceramic film is separated by filtration technique and device |
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-
2019
- 2019-12-06 CN CN201911244521.0A patent/CN110871033A/en active Pending
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| EP1264626A1 (en) * | 2001-06-07 | 2002-12-11 | CHOI, Choong Hyun | Variable pore micro filter having simple and compact structure capable of side stream filtration and cross flow filtration |
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| CN102895879A (en) * | 2012-09-03 | 2013-01-30 | Acs农化系统有限公司 | Method and apparatus for improving membrane filtration process |
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Application publication date: 20200310 |
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