CN110217858A - Hollow-fibre ultrafiltration device with concentrate recirculation structure - Google Patents
Hollow-fibre ultrafiltration device with concentrate recirculation structure Download PDFInfo
- Publication number
- CN110217858A CN110217858A CN201910595630.0A CN201910595630A CN110217858A CN 110217858 A CN110217858 A CN 110217858A CN 201910595630 A CN201910595630 A CN 201910595630A CN 110217858 A CN110217858 A CN 110217858A
- Authority
- CN
- China
- Prior art keywords
- water
- ultrafiltration device
- inlet end
- hollow
- water pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 47
- 239000012141 concentrate Substances 0.000 title claims abstract description 30
- 239000000835 fiber Substances 0.000 title claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 210
- 239000012528 membrane Substances 0.000 claims abstract description 34
- 239000012510 hollow fiber Substances 0.000 claims abstract description 27
- 238000011001 backwashing Methods 0.000 claims abstract description 17
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 10
- 239000003814 drug Substances 0.000 abstract description 11
- 239000000126 substance Substances 0.000 abstract description 8
- 238000004140 cleaning Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 239000000084 colloidal system Substances 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 238000009295 crossflow filtration Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 235000012489 doughnuts Nutrition 0.000 description 1
- 239000003657 drainage water Substances 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000004907 flux Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000008213 purified water Substances 0.000 description 1
Classifications
-
- 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
- C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
-
- 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
- B01D2321/20—By influencing the flow
- B01D2321/2083—By reversing the flow
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/14—Maintenance of water treatment installations
Abstract
The present invention relates to a kind of hollow-fibre ultrafiltration devices, specifically have the hollow-fibre ultrafiltration device of concentrate recirculation structure, belong to hollow-fibre ultrafiltration device technical field.It includes raw water box, intake pump, cartridge filter, hollow fiber membrane ultrafiltration device, water producing tank and backwashing pump, hollow fiber membrane ultrafiltration device concentrated water water outlet connects concentrate recirculation pump water inlet end by water pipe, concentrate recirculation pumps out water end (W.E.) and connects check-valves water inlet end by water pipe, and check-valves water outlet connects hollow fiber membrane ultrafiltration device water inlet end by water pipe；The water pipe of concentrate recirculation pump water inlet end connection is equipped with the 6th valve.Concentrate recirculation of the invention improves the flow velocity of film surface concurrent flow, and so as to which the most of substance for being trapped in film surface is washed away, what film surface can be cleaned is cleaner；Can be the very clean of Membrane cleaning without adding medicament when each backwash membrane, the number that medicine is washed significantly reduces, and the service life of film greatly improves.
Description
Technical field
The present invention relates to a kind of hollow-fibre ultrafiltration devices, and specifically the doughnut with concentrate recirculation structure is super
Device is filtered, hollow-fibre ultrafiltration device technical field is belonged to.
Background technique
Hollow fiber ultrafiltration membrane is widely used in preparation purified water, sewage treatment, in ultrafiltration membrane main filtration water
Colloid, organic matter etc..Hollow fiber filtering membrane has two kinds of methods of operation in practice: the first is full dose filtering technique,
After all water passes through filter membrane, 100% production water is obtained, and colloid, organic filtration under film surface, the flux for waiting films
After dropping to certain numerical value or less, chemical cleaning is carried out, the substance filtering in film surface washes；Second is tangential flow filtration
Technology after water enters film device, obtains most production water, and in addition the water (concentrated water) of fraction is not transmitted through film, with film
Surface is flowed through in parallel, while the substance filtering in film surface is taken away together.It, cannot be since the concentrated water flow velocity of fraction is very low
The substance of filtering on the surface of the film washes away, and after having filtered a certain amount of water, the water yield of film begins to a sharp decline, special
It is not when filter sewage, such case is especially prominent.
In the prior art, the ultrafiltration apparatus of tangential filtration technique include raw water box, water producing tank, hollow-fibre ultrafiltration device,
Cartridge filter, intake pump, backwashing pump and drug metering pump, and after pump startup of intaking, the water of raw water box passes through cartridge filter
Pre-filtering is carried out, then enters hollow-fibre ultrafiltration device, the production water that hollow-fibre ultrafiltration device comes out enters water producing tank, dense
Water is discharged into sewer.At this point, backwashing pump and drug metering pump are in halted state, compressed air is also run-stopping status.Through
After spending the accumulative production water time, intake pump is out of service, backwash pump startup, extracts the water in water production tank, metering pump is according to setting
Value medicament is squeezed into backwash pipeline, backwash is carried out to the film of hollow-fibre ultrafiltration device.Such back-washing method, film by
The service life of the effect of medicament, film greatly shortens, and the substance in film surface cannot wash well.Device operation a period of time
After, the dirt of film is stifled to be aggravated quickly, and water yield declines quickly.
Summary of the invention
It is an object of the present invention to overcome the above deficiencies, to provide a kind of hollow fibre with concentrate recirculation structure
Ultrafiltration apparatus is tieed up, concentrate recirculation improves the flow velocity of film surface concurrent flow, so as to the most of object for being trapped in film surface
Matter washes away, and what film surface can be cleaned is cleaner, improves the service life of film.
According to technical solution provided by the invention, the hollow-fibre ultrafiltration device with concentrate recirculation structure includes raw water
Case, intake pump, cartridge filter, hollow fiber membrane ultrafiltration device, water producing tank and backwashing pump, it is characterized in that: the raw water box water outlet
Intake pump water inlet end is connected by water pipe, intake pump water outlet connects cartridge filter water inlet end, cartridge filter by water pipe
Water outlet connects hollow fiber membrane ultrafiltration device water inlet end by water pipe；The hollow fiber membrane ultrafiltration device produces water water outlet and is connected by water pipe
It practices midwifery water tank water intake end, water producing tank water outlet connects backwashing pump water inlet end by water pipe, and backwashing pump water outlet passes through water pipe connection
Hollow fiber membrane ultrafiltration device produces water water outlet；The water pipe of the backwashing pump water outlet connection is equipped with the 4th valve, water producing tank water inlet
The water pipe of end connection is equipped with third valve；Hollow fiber membrane ultrafiltration device concentrated water water outlet connects concentrate recirculation pump by water pipe
Water inlet end, concentrate recirculation pump out water end (W.E.) and connect check-valves water inlet end by water pipe, and check-valves water outlet is connected hollow by water pipe
Fibrous ultrafilter water inlet end；The water pipe of concentrate recirculation pump water inlet end connection is equipped with the 6th valve.
Further, hollow fiber membrane ultrafiltration device concentrated water water outlet connects backwash drainpipe, and backwash drainpipe is equipped with the 5th
Valve.
Further, concentrate recirculation pumps out water end (W.E.) connection concentrated water drainpipe, and concentrated water drainpipe is equipped with concentrated water discharge flow
Meter and the 8th valve.
Further, the water pipe of check-valves water outlet connection is equipped with concentrated water return flow meter and the 7th valve.
Further, the water pipe of cartridge filter water inlet end connection is equipped with the first valve, and cartridge filter water outlet connects
The water pipe connect is equipped with the second valve.
Compared with the prior art the present invention has the advantage that
The invention has the advantages of simple structure, compactness and reasonable structure, and concentrate recirculation improves the flow velocity of film surface concurrent flow, so as to retention
It washes away in most of substance of film surface, what film surface can be cleaned is cleaner；Without addition when each backwash membrane
Medicament can be the very clean of Membrane cleaning, and the number that medicine is washed significantly reduces, and the service life of film greatly improves.
Detailed description of the invention
Fig. 1 is main view of the present invention.
Description of symbols: 1- raw water box, 2- intake pump, 3- cartridge filter, 4- hollow fiber membrane ultrafiltration device, 5- produce water
Case, 6- backwashing pump, the first valve of 7-, the second valve of 8-, 9- third valve, the 4th valve of 10-, 11- concentrate recirculation pump, 12- stop
Return valve, 13- concentrated water return flow meter, 14- concentrated water discharge flowmeter, 15- concentrated water drainpipe, 16- backwash drainpipe, 17- the 5th
Valve, the 6th valve of 18-, the 7th valve of 19-, the 8th valve of 20-.
Specific embodiment
The present invention will be further described in conjunction with the embodiment in attached drawing below:
As shown in Figure 1, the invention mainly comprises raw water box 1, intake pump 2, cartridge filter 3, hollow fiber membrane ultrafiltration device 4, producing water
Case 5 and backwashing pump 6.
1 water outlet of raw water box connects 2 water inlet end of intake pump by water pipe, and 2 water outlet of intake pump is connected by water pipe
3 water inlet end of cartridge filter, 3 water outlet of cartridge filter connect 4 water inlet end of hollow fiber membrane ultrafiltration device by water pipe.
The water pipe of 3 water inlet end of the cartridge filter connection is equipped with the first valve 7, the connection of 3 water outlet of cartridge filter
Water pipe be equipped with the second valve 8.
The hollow fiber membrane ultrafiltration device 4 produces water water outlet and connects 5 water inlet end of water producing tank, 5 water outlet of water producing tank by water pipe
6 water inlet end of backwashing pump is connected by water pipe, 6 water outlet of backwashing pump connects hollow fiber membrane ultrafiltration device 4 by water pipe and produces water water outlet.
On the water pipe that the water pipe of 6 water outlet of the backwashing pump connection is connected equipped with the 4th valve 10,5 water inlet end of water producing tank
Equipped with third valve 9.
The 4 concentrated water water outlet of hollow fiber membrane ultrafiltration device connects concentrate recirculation by water pipe and pumps 11 water inlet ends, concentrate recirculation
It pumps 11 water outlets and 12 water inlet end of check-valves is connected by water pipe, 12 water outlet of check-valves connects hollow fiber membrane ultrafiltration device by water pipe
4 water inlet ends.
The water pipe that the concentrate recirculation pumps the connection of 11 water inlet ends is equipped with the 6th valve 18.
The water pipe of 12 water outlet of the check-valves connection is equipped with concentrated water return flow meter 13 and the 7th valve 19, and concentrated water is returned
Water ga(u)ge 13 can measure the concentrated water flow to flow back by check-valves.
The concentrate recirculation pumps 11 water outlets and connects concentrated water drainpipe 15, and concentrated water is discharged concentrated water drainpipe 15, concentrated water drainage
Water pipe 15 is equipped with concentrated water discharge flowmeter 14 and the 8th valve 20, and concentrated water discharge flowmeter 14 can measure the concentrated stream of discharge
Amount.
The 4 concentrated water water outlet of hollow fiber membrane ultrafiltration device connects backwash drainpipe 16, and backwash drainpipe 16 is equipped with the 5th
Valve 17.
The working principle of the invention is: when intake pump operation when, the water in raw water box carries out pre- mistake by cartridge filter
Filter, then enters in hollow fiber membrane ultrafiltration device, and the production water that hollow fiber membrane ultrafiltration device comes out enters water producing tank, and concentrated water enters concentrated water
It in reflux pump, subsequently enters in the water pipe that cartridge filter water outlet connects, the water being pumped into water inlet mixes, subsequently into
It is filtered in fibre ultrafiltration device.During this, backwashing pump stops working.
When backwash pump work, third valve and the 6th valve are closed, and the water in water producing tank goes out from hollow fiber membrane ultrafiltration device
Water end (W.E.) enters back flush film, and the water for rinsing production water is discharged by backwash drainpipe.
The design discharge of concentrated water flow pump be intake pump 65 ~ 85%, concentrated water drainage design flow of inlet water 10% with
Under.Because of the reflux of concentrated water, in the case where concentrated water discharge very little, the flow velocity of film surface concurrent flow will be than original flow velocity
6 ~ 7 times big, such flow velocity can wash away the most of substance for being trapped in film surface walk, by concentrated water discharger outside.
It thus can be the very clean of Membrane cleaning without adding medicament when each backwash.Increase the concentrate recirculation system
System only carries out primary or even longer time medicine to film every year and washes.The number that medicine is washed significantly reduces, and film uses the longevity
Life can be improved 50% or more.
Claims (5)
1. a kind of hollow-fibre ultrafiltration device with concentrate recirculation structure, including raw water box (1), intake pump (2), security personnel's filtering
Device (3), hollow fiber membrane ultrafiltration device (4), water producing tank (5) and backwashing pump (6), it is characterized in that: the raw water box (1) water outlet passes through
Water pipe connects intake pump (2) water inlet end, and intake pump (2) water outlet connects cartridge filter (3) water inlet end by water pipe, ensured public security
Filter (3) water outlet connects hollow fiber membrane ultrafiltration device (4) water inlet end by water pipe；The hollow fiber membrane ultrafiltration device (4) produces water and goes out
Water end (W.E.) connects water producing tank (5) water inlet end by water pipe, and water producing tank (5) water outlet connects backwashing pump (6) water inlet end by water pipe, instead
It washes pump (6) water outlet and water water outlet is produced by water pipe connection hollow fiber membrane ultrafiltration device (4)；Backwashing pump (6) the water outlet connection
Water pipe be equipped with the 4th valve (10), water producing tank (5) water inlet end connection water pipe be equipped with third valve (9)；It is described hollow
Fibrous ultrafilter (4) concentrated water water outlet connects concentrate recirculation by water pipe and pumps (11) water inlet end, and concentrate recirculation pumps (11) water outlet
By water pipe connect check-valves (12) water inlet end, check-valves (12) water outlet by water pipe connect hollow fiber membrane ultrafiltration device (4) into
Water end (W.E.)；The water pipe of concentrate recirculation pump (11) the water inlet end connection is equipped with the 6th valve (18).
2. the hollow-fibre ultrafiltration device of concentrate recirculation structure is had as described in claim 1, it is characterized in that: the hollow fibre
Ultrafilter (4) concentrated water water outlet connection backwash drainpipe (16) is tieed up, backwash drainpipe (16) is equipped with the 5th valve (17).
3. the hollow-fibre ultrafiltration device of concentrate recirculation structure is had as described in claim 1, it is characterized in that: the concentrated water is returned
Stream pump (11) water outlet connection concentrated water drainpipe (15), concentrated water drainpipe (15) are equipped with concentrated water discharge flowmeter (14) and the 8th
Valve (20).
4. the hollow-fibre ultrafiltration device of concentrate recirculation structure is had as described in claim 1, it is characterized in that: the check-valves
(12) water pipe of water outlet connection is equipped with concentrated water return flow meter (13) and the 7th valve (19).
5. the hollow-fibre ultrafiltration device of concentrate recirculation structure is had as described in claim 1, it is characterized in that: described ensured public security
The water pipe of filter (3) water inlet end connection is equipped with the first valve (7), and the water pipe of cartridge filter (3) water outlet connection is equipped with
Second valve (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910595630.0A CN110217858A (en) | 2019-07-03 | 2019-07-03 | Hollow-fibre ultrafiltration device with concentrate recirculation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910595630.0A CN110217858A (en) | 2019-07-03 | 2019-07-03 | Hollow-fibre ultrafiltration device with concentrate recirculation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110217858A true CN110217858A (en) | 2019-09-10 |
Family
ID=67815854
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910595630.0A Withdrawn CN110217858A (en) | 2019-07-03 | 2019-07-03 | Hollow-fibre ultrafiltration device with concentrate recirculation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110217858A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135673A1 (en) * | 2020-12-21 | 2022-06-30 | Wilo Se | Monitoring the integrity of an ultrafiltration membrane during a backflushing operation |
| CN115253709A (en) * | 2021-04-30 | 2022-11-01 | 天津膜天膜科技股份有限公司 | High-recovery-rate operation system for hollow fiber nanofiltration membrane |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631270A (en) * | 1992-07-21 | 1994-02-08 | Daicel Chem Ind Ltd | Film cleaning process for water and operation of the device |
| JPH06262173A (en) * | 1993-03-15 | 1994-09-20 | Daicel Chem Ind Ltd | Membrane purifying method for surface water with improved recovery rate and operation method of its device |
| CN207391123U (en) * | 2017-09-13 | 2018-05-22 | 杭州美亚水处理科技有限公司 | Backwash and big flow circulator are strengthened in ultrafiltration |
| CN207726778U (en) * | 2017-12-13 | 2018-08-14 | 天津市尚拓环保科技有限公司 | A kind of ultrafiltration apparatus of processing oily waste water |
| CN210286849U (en) * | 2019-07-03 | 2020-04-10 | 费森尤斯卡比华瑞制药有限公司 | Hollow fiber ultrafiltration device with concentrated water backflow structure |
-
2019
- 2019-07-03 CN CN201910595630.0A patent/CN110217858A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0631270A (en) * | 1992-07-21 | 1994-02-08 | Daicel Chem Ind Ltd | Film cleaning process for water and operation of the device |
| JPH06262173A (en) * | 1993-03-15 | 1994-09-20 | Daicel Chem Ind Ltd | Membrane purifying method for surface water with improved recovery rate and operation method of its device |
| CN207391123U (en) * | 2017-09-13 | 2018-05-22 | 杭州美亚水处理科技有限公司 | Backwash and big flow circulator are strengthened in ultrafiltration |
| CN207726778U (en) * | 2017-12-13 | 2018-08-14 | 天津市尚拓环保科技有限公司 | A kind of ultrafiltration apparatus of processing oily waste water |
| CN210286849U (en) * | 2019-07-03 | 2020-04-10 | 费森尤斯卡比华瑞制药有限公司 | Hollow fiber ultrafiltration device with concentrated water backflow structure |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022135673A1 (en) * | 2020-12-21 | 2022-06-30 | Wilo Se | Monitoring the integrity of an ultrafiltration membrane during a backflushing operation |
| CN115253709A (en) * | 2021-04-30 | 2022-11-01 | 天津膜天膜科技股份有限公司 | High-recovery-rate operation system for hollow fiber nanofiltration membrane |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190910 |
|
| WW01 | Invention patent application withdrawn after publication |