CN104587833B - Ultrafiltration membrane module and method for treating high-turbidity water by using same - Google Patents
Ultrafiltration membrane module and method for treating high-turbidity water by using same Download PDFInfo
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- CN104587833B CN104587833B CN201510034124.6A CN201510034124A CN104587833B CN 104587833 B CN104587833 B CN 104587833B CN 201510034124 A CN201510034124 A CN 201510034124A CN 104587833 B CN104587833 B CN 104587833B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 140
- 239000012528 membrane Substances 0.000 title claims abstract description 67
- 238000000108 ultra-filtration Methods 0.000 title claims abstract description 28
- 238000000034 method Methods 0.000 title claims abstract description 24
- 239000011148 porous material Substances 0.000 claims description 10
- 230000008569 process Effects 0.000 claims description 10
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- 238000004519 manufacturing process Methods 0.000 abstract 4
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- 235000020188 drinking water Nutrition 0.000 description 3
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Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The invention discloses an ultrafiltration membrane module and a method for treating high-turbidity water by using the same. The ultrafiltration membrane module comprises a shell and a filter element, wherein the filter element is composed of a membrane filament and a membrane seal cover; the membrane seal cover divides the inner cavity of the shell into upper and lower parts, namely a water production cavity and a filtering cavity, the membrane filament is located in the filtering cavity, and the two ends of the membrane filament are fixed on the membrane seal cover, and communicated with the water production cavity; the shell is provided with a water production opening which is communicated with the water production cavity, and a water inlet and a concentrated water outlet which are communicated with the filtering cavity; and the concentrated water outlet is formed in the top of the shell, and communicated with the filtering cavity by a central tube passing through the membrane seal cover, and the water inlet is formed in the bottom of the shell. The ultrafiltration membrane module disclosed by the invention is easily disassembled and strong in staining resistance, and sewage blocking is not easily caused.
Description
Technical field
The present invention relates to emergent water-treatment technology field, more particularly to a kind of hyperfiltration membrane assembly and its process ultra's
Method.
Background technology
Ultra is common river pollution type, and the Changjiang river occupies 13 great rivers in the world with the total discharge of sediment of the Yellow River
First of total discharge of sediment.In recent years, the natural calamity such as earthquake, mountain torrents, mud-rock flow takes place frequently, and also results in water system destruction, drink
Polluted by silt with water source, Drinking Water is difficult to ensure that drinking water safety receives much concern.For this problem, if
Defensive measure can not be in time taken, grave danger will be constituted to ecological environment and people life property safety.
The ultra higher for silt content, conventional process is typically using the method for dosing coagulation.Macromolecule and compound
It is notable that the exploitation of coagulant causes treatment effect to be lifted, but generally, coagulation and precipitation structures take up an area larger, processing procedure
With the addition of certain chemical reagent, operational administrative is complex.In recent years, membrane technology is simple to operate because of its, and treatment effect shows
Work etc. quickly grows in drinking water treatment application, wherein, ultrafiltration has preferable removal effect to suspension, turbidity.
For decelerating membrane pollution, ultrafiltration there are certain requirements to water inlet, typically within 10NTU.It is often turbid under emergency condition
Spend higher (hundreds of or even thousands of), therefore, the efficient water technology for ultra of research also increasingly receives much concern.
It is used for the milipore filter of water process in the market substantially based on doughnut, hollow fiber film assembly can do
To minimizing very much, due to hundreds of thousands without supporter, can be filled in component to up to a million doughnuts, loading density is big,
Aquifer yield is high, but has the disadvantage that face scale removal is more difficult, and film cannot update once damaging.Usual hollow fiber ultrafiltration membrane group
Part, is that central tube is arranged in cylinder, and milipore filter is placed in tin between inwall and central tube, and in cylinder two ends resin to it
It is fixed.What this structure was usually equidistantly arranged side by side, layout is not reasonable, is also easy to produce cleaning dead angle, and easily makes film silk
Impaired deformation, skewness.Meanwhile, as the prolongation of membrane module use time can produce impurities left in membrane module, need to enter
Row periodic cleaning.It can be seen that, the main bugbear that current hollow fiber ultrafiltration membrane faces in the application is fouling membrane and fracture of wire problem, this
A little problems not only increase investment and operation maintenance burden, also limit the application of hyperfiltration technique.
For produced problem, some propose different solutions, such as patent 200820011362 is provided
A kind of novel ultrafiltration membrane component, is that ultrafiltration membrane filaments composition chipware is placed in tubulose pressure casing, in the backwash liquor import mouth of pipe
Perforated baffle is installed in side, each component is bonded as one each clearance seal with fluid sealant, wire broken rate is reduced with this, improves anti-
The membrane filtration ability of washed journey, improve backwash recovery effects.Patent 201120552759 provides a kind of with antipollution structure
External pressing type hollow fibrous membrane ultrafiltration module, it is to intert to be provided with multiple variable cross section-types along hollow fiber film yarn length direction
Turbulence promoter so that fouling membrane and concentration polarization phenomenon are effectively controlled, and improve filter efficiency, extend membrane module
Service life.It is a kind of polysulfone hollow fiber ultrafiltration membrane system of improvement central duct structure that patent 201120517955 is provided, and it is
By apopore on centre pipe surface interlaced arrangement, be not likely to produce dirt dead angle, strengthen cleaning performance.Patent
201110179385 are related to a kind of polysulfone hollow fiber ultrafiltration membrane system with grid, and it is to be fixed with grid on centre pipe axial direction
Plate, to being fixed on the fiber ultrafiltration membrane inside bearing shell certain fixation and support strengthening action is played, and can reduce backwash
When film deformation, extend film service life.Patent 201110179369 provides a kind of hollow fiber ultrafiltration membrane with stiffening plate
Component, its feature is that a center baffle is fixed on into membrane module inwall, and the center baffle in putamina has reinforcement vertical to film silk
The effect of degree, does not allow to be also easy to produce dirt residual and enhancing cleaning performance in the normal running surface of membrane module.
But the prioritization scheme for being proposed be both for Membrane cleaning, extend membrane lifetime in a certain respect for, optimization changes
Enter also further development space.Therefore, research and development are applied to ultra and process, Membrane cleaning, prolongation membrane lifetime are entered
The hyperfiltration membrane assembly of row major tuneup is significant, meets market demands, there is good development prospect.
The content of the invention
The invention provides a kind of hyperfiltration membrane assembly and its method for processing ultra, the hyperfiltration membrane assembly is quick detachable,
Antifouling property is strong and does not easily cause dirty stifled.
A kind of hyperfiltration membrane assembly, including shell and filter core, the filter core is made up of film silk and film capping, and the film capping will
Shell inner cavity is divided into product water cavity and the upper and lower two parts of filter chamber, and the film silk is located inside filter chamber, and two ends are fixed on film capping
On, and connect with water cavity is produced；The shell is provided with and produces the product mouth of a river that water cavity is connected, and the water inlet connected with filter chamber
With concentrated water outlet；The concentrated water outlet is located at cover top portion, and is connected with filter chamber by the central tube through film capping, described
Water inlet is located at the bottom of shell.
Water inlet is arranged at outer casing bottom by the hyperfiltration membrane assembly, is produced the mouth of a river and is located at shell upper, can coordinate air purge,
The antifouling property of hyperfiltration membrane assembly is significantly improved, and does not easily cause dirty stifled, particle, colloid, the bacterium of removable film silk periphery
Deng pollutant.The two ends of the film silk are each attached in film capping, form U-shaped, make film silk in ultra-filtration process with current ripple
Movable property life vibration, promotes to be attached to film silk outer surface dirt and comes off, it is possible to decrease dirty stifled probability occurs in hyperfiltration membrane assembly.Milipore filter
Component internal forms cross-flow filtration operational mode, makes filter membrane surface be not likely to produce concentration polarization phenomenon and scale problems, filters saturating
Cross rate decay slower.
The shell is made up of end cap and body, and end cap is fixed with body by anchor ear, and end cap sets with the joining place of body
There is annular groove, corresponding film capping periphery is provided with the annular protrusion being engaged, is easy to the dismounting and cleaning of hyperfiltration membrane assembly.
Film capping periphery is additionally provided with O-ring seal, for film capping and the sealing at end cap, body contacts.
Described film silk is Kynoar (PVDF) Hollow-fibre membranes material, and the strength of materials is high, antifouling property is good,
Film silk fracture rate can be reduced, increased the service life；Film silk may also be employed PP, PES, PVC Hollow-fibre membranes material or carbon fiber filter
Post.
The film capping is provided with the centre bore passed through for central tube, and the central tube is two-part structure, is respectively connected
Section and main paragraph, its middle connecting segment connection concentrated water outlet and centre bore, main paragraph one end insertion centre bore, the other end is extended to the over
In filter chamber.Fail by discharging in the concentrated water Jing pressure pumping action of film silk therefrom heart pipe.
The bottom of the filter chamber is provided with water distributing plate, and water distributing plate is uniformly provided with water distributing pore.The shape of water distributing pore is wanted without strict
Ask, preferably, using strip；Raw water is evenly distributed after water distributing pore, beneficial to follow-up ultra-filtration process.Preferably,
The water distributing pore is 60～90 degree with the angle of horizontal plane, more preferably 60～70 degree.Water distributing pore is designed to incline, the easy shape of current
Into turbulent flow, the effect of current scour film silk periphery polluter is not only improved, can also avoid being caused because current are excessively concentrated
Film silk breaks up or thrusts.
The central tube is extended at water distributing plate, free end end-enclosed, and the region near film capping is provided with concentrated water import.
Fail through milipore filter and the concentrated water that left behind can be entered in central tube by concentrated water import, and Jing compression pumps discharge film group
Outside part.
Present invention also offers a kind of method for processing ultra using the hyperfiltration membrane assembly, from water inlet original is passed through
Water, makes raw water that film ultrafiltration is carried out in filter chamber by pressurization, obtains and produces water and concentrated water, produces the inflow of water Jing film silks inner chamber and produces water
Chamber, then flow out from is produced from the mouth of a river, concentrated water flows out after central tube from concentrated water outlet.
Preferably, the flow velocity for controlling water in filter chamber is 0.05～0.095m/s.The raw water Jing water distributing plate of the flow velocity is equal
After even water distribution, raw water not only can be made to be uniformly distributed in around film silk, additionally it is possible to which guarantee will not cause film silk because current are excessive
Break up or rupture.The water and the cross-flow ratio of concentrated water of producing is 1: 0.5～3.The water that produces refers to the present invention with the cross-flow ratio of concentrated water
The ratio of flow velocity and concentrated water exit flow velocity at the mouth of a river is produced in hyperfiltration membrane assembly.
Compared with prior art, the invention has the advantages that：
(1) present invention is carried out from the water inlet of shell lower end when ultra is processed using the hyperfiltration membrane assembly of U-shaped film silk design,
Water is produced from shell upper end, realizes that air water joint is rinsed, significantly improve the antifouling property of hyperfiltration membrane assembly, and do not easily cause dirt
It is stifled, the pollutants such as particle, colloid, the bacterium of film silk periphery are can remove, it is suitable to the process of emergency ultra；
(2) hyperfiltration membrane assembly of the present invention is external-compression type membrane module structure, and accessible raw water type is wider, water outlet security
It is high.
Description of the drawings
Fig. 1 is the structural representation of hyperfiltration membrane assembly of the present invention；
Fig. 2 is the explosive view of hyperfiltration membrane assembly of the present invention；
Fig. 3 is the semi-cutaway of hyperfiltration membrane assembly of the present invention；
Fig. 4 is the process schematic representation that hyperfiltration membrane assembly of the present invention processes ultra；
1st, surface water；2nd, water pump；3rd, raw water box；4th, booster pump；5th, concentrated water outlet；6th, water is produced；7th, intake；
Fig. 5 is the service data of application examples of the present invention 1.
Specific embodiment
Hyperfiltration membrane assembly of the present invention is further detailed with reference to the accompanying drawings and examples.
Embodiment 1
As shown in Figure 1, 2, a kind of hyperfiltration membrane assembly, including shell 1 and filter core by PP material manufactures.Wherein, shell 1 is in
Cylindric, shell 1 is made up of the end cap 5 on top and the body 6 of bottom, and the top of end cap 5 is provided with concentrated water outlet 7, the side of end cap 5
Portion is provided with the product mouth of a river 8；The bottom sidewall of body 6 is provided with water inlet 2.
Filter core is made up of film capping 3 and film silk 4.Film silk 4 be Kynoar (PVDF) hollow-fibre membrane, the pipe of film silk 4
Footpath is 1.25～1.35mm, and the aperture of fenestra is 0.03～0.1 μm；Film silk 4 is bent to form " U " type, and film capping 3 is by annular shape
PP shells and glue envelope note core composition, the material glue such as two ends epoxy resin or polyurethane of every film silk is encapsulated in outside annular shape
In shell, note core adopts the material such as epoxy resin or polyurethane, overlooks film capping 3 it can be seen that the port of film silk 4.Film silk 4 also can be
PES, PVC, PP hollow-fibre membrane.
As shown in Figure 2,3, end cap 5 is fixed with body 6 by O-shaped anchor ear 12, and end cap 5 sets with the joining place of body 6
The periphery for having the groove 9 of annular, the corresponding film capping 3 of groove 9 is provided with the annular protrusion 10 being engaged, annular protrusion 10
Both sides are provided with and are respectively equipped with an O-ring seal 11.
The inner chamber of shell 1 is divided into product water cavity 13 and filter chamber 14 by film capping 3, and filter chamber 14 has and is divided into upper and lower two parts,
Top is ultrafiltration region, the ultrafiltration region and concentrated water outlet；Bottom is divided into inlet area, the inlet area and water inlet 2
Connection.Film silk 4 is located at the ultrafiltration intra-zone of filter chamber 14, and two-port is connected with water cavity 13 is produced, and is produced on water cavity 13 and shell
Produce the mouth of a river 8 to connect.Central tube is additionally provided with inside shell 1, film capping 3 is provided with the centre bore 17 passed through for central tube, central tube
By centre bore 17 through whole film capping 3, one end of central tube connects with filter chamber 14, and the other end is connected with concentrated water outlet 7.
Central tube is two-part structure, respectively linkage section 15 and main paragraph 16, wherein, the connection concentrated water of linkage section 15 outlet 7 and center
Hole 17, the one end of main paragraph 16 insertion centre bore 17, the other end is extended to the in filter chamber 14.It is tight between linkage section 15 and main paragraph 16
It is close to connect or there is a certain distance.Linkage section 15 and pus outlet 7 between, linkage section 15 and film capping 3 between, main paragraph 16 with
Paired sealing ring 20 is equipped between film capping 3.
The bottom of filter chamber 14 is provided with water distributing plate 18, and water distributing plate is uniformly provided with water distributing pore 19, and water distributing pore is strip, specification
For 4 × 25mm, water distributing pore 19 is 70 degree with the angle of horizontal plane.Central tube is extended at water distributing plate 18, free end end-enclosed,
Region near film capping is provided with concentrated water import 21.
Above-mentioned hyperfiltration membrane assembly is used for the technological process of ultra's process and the course of work is as follows：
As shown in figure 4, surface water by water pump enter raw water box in, and by booster pump by raw water (ultra) from
The water inlet of hyperfiltration membrane assembly outer casing bottom is pumped into, and water inlet can also be passed through air, that is, coordinate air purge, and by pressurization raw water is led to
Cross and turbulent flow formed after the even cloth of water distributing plate, and film ultrafiltration is carried out in filter chamber, by the particle in film ultrafiltration raw water, colloid and
The pollutants such as bacterium are blocked by milipore filter and form concentrated water in milipore filter periphery, and the concentrated water import of concentrated water Jing central tube enters center
Pipe, and it is pumped out concentrated water outlet；Pure water enters film silk inner chamber by milipore filter, and enters product water cavity, by producing mouth of a river pump
Go out；Due to the effect of water distributing plate, raw water can form turbulent flow when entering filter chamber, be not and fixed plus the U-shaped place of film silk so that
The current for flowing up can wash away the dirt of ultrafiltration membrane surface while ultrafiltration, and then reduce dirty stifled phenomenon, extend milipore filter
Component service life.
Application examples 1
Emergent water treatment test is carried out using the hyperfiltration membrane assembly described in embodiment 1, is intake as ultra, turbidity is
40NTU, ultra is passed through from water inlet, makes raw water that film ultrafiltration is carried out in filter chamber by pressurization, is adjusted raw water and is existed
Flow rate of water flow in filter chamber is 0.05m/s, and produces water and concentrated water cross-flow ratio and (produce flow velocity and concentrated water exit flow velocity at the mouth of a river
Ratio) be 3: 3, continuous operation one hour, delivery turbidity is less than 0.4NTU, and clearance is more than 99%.As a result it is as shown in Figure 5.
Application examples 2
Emergent water treatment test is carried out using the hyperfiltration membrane assembly described in embodiment 1, is intake as high turbidity raw sewage, turbidity is
70NTU, high turbidity raw sewage is passed through from water inlet, makes raw water that film ultrafiltration is carried out in filter chamber by pressurization, adjusts raw water
Flow rate of water flow in filter chamber is 0.95m/s, and it is 1: 2 to produce water with concentrated water cross-flow ratio, continuous operation one hour, and water outlet is turbid
Degree is less than 0.4NTU, and clearance is more than 99.4%.
Claims (4)
1. a kind of method that utilization hyperfiltration membrane assembly processes ultra, it is characterised in that
The hyperfiltration membrane assembly, including shell and filter core, the filter core is made up of film silk and film capping, and the film is covered shell
Inner chamber is divided into product water cavity and the upper and lower two parts of filter chamber, and the film silk is located inside filter chamber, and two ends are fixed in film capping,
And connect with water cavity is produced；The shell is provided with and produces the product mouth of a river that connects of water cavity, and the water inlet that connects with filter chamber and
Concentrated water is exported；Concentrated water outlet is located at cover top portion, and is connected with filter chamber by the central tube through film capping, it is described enter
The mouth of a river is located at the bottom of shell；The bottom of the filter chamber is provided with water distributing plate, and water distributing plate is uniformly provided with water distributing pore, water distributing pore and water
The angle of plane is 60～70 degree；
The method for processing ultra, including：Raw water is passed through from water inlet, makes raw water that film is carried out in filter chamber by pressurization
Ultrafiltration, obtains and produces water and concentrated water, produces water Jing film silks inner chamber and flows into and produces water cavity, then flows out from is produced from the mouth of a river, concentrated water after central tube,
Flow out from concentrated water outlet；The flow velocity for controlling water in filter chamber is 0.05～0.095m/s；It is described product water be with the cross-flow ratio of concentrated water
1:0.5～3.
2. the method for claim 1, it is characterised in that the shell is made up of end cap and body, end cap leads to body
Cross anchor ear to fix, end cap is provided with annular groove with the joining place of body, corresponding film capping periphery is provided with the annular being engaged
It is raised.
3. the method for claim 1, it is characterised in that the film capping is provided with the centre bore passed through for central tube, institute
It is two-part structure, respectively linkage section and main paragraph to state central tube, and its middle connecting segment connection concentrated water is exported and centre bore, main body
Duan Yiduan inserts centre bore, and the other end is extended to the in filter chamber.
4. the method for claim 1, it is characterised in that the central tube is extended at water distributing plate, free end end envelope
Close, the region near film capping is provided with concentrated water import.
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| CN105016550B (en) * | 2015-07-31 | 2017-06-06 | 浙江至美环境科技有限公司 | A kind of portable emergency water treatment facilities and handling process |
| CN105060603B (en) * | 2015-07-31 | 2018-04-20 | 浙江至美环境科技有限公司 | A kind of mobile emergency water treatment facilities and its technique based on a variety of pollution types |
| CN105060585B (en) * | 2015-07-31 | 2017-09-08 | 浙江至美环境科技有限公司 | A kind of portable multi-purpose device for treating emergency drinking water and handling process |
| CN107158951B (en) * | 2017-06-02 | 2020-01-24 | 浙江沁园水处理科技有限公司 | Ultrafiltration filter element assembly |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201719980U (en) * | 2010-02-10 | 2011-01-26 | 金振忠 | Tubular composite membrane ultrafiltration and microfiltration assembly |
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| JPH07265850A (en) * | 1994-03-28 | 1995-10-17 | Mitsubishi Rayon Co Ltd | Water purifying device with waste water alarm function |
| JP4408524B2 (en) * | 2000-03-29 | 2010-02-03 | 義公 渡辺 | Fresh water system |
| CN201154925Y (en) * | 2007-12-18 | 2008-11-26 | 苏州立升净水科技有限公司 | Water purifier and filter comprising the same |
| CN203253358U (en) * | 2013-05-03 | 2013-10-30 | 杭州水处理技术研究开发中心有限公司 | Double-end water production ultrafiltration membrane component |
| CN204107339U (en) * | 2014-09-23 | 2015-01-21 | 浙江晶泉水处理设备有限公司 | The ultrafiltration module of modified form |
| CN204544002U (en) * | 2015-01-22 | 2015-08-12 | 浙江至美环境科技有限公司 | A kind of hyperfiltration membrane assembly |
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| CN201719980U (en) * | 2010-02-10 | 2011-01-26 | 金振忠 | Tubular composite membrane ultrafiltration and microfiltration assembly |
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Denomination of invention: A ultrafiltration membrane component and its method for treating high turbidity water Granted publication date: 20170510 Pledgee: Bank of Beijing Co.,Ltd. Hangzhou Yuhang sub branch Pledgor: CHIMEY ENVIRONMENT SCIENCE & TECHNNOLOGY CO.,LTD. Registration number: Y2024980007116 |
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