CN102773018A - Hollow fiber membrane module and production method thereof - Google Patents
Hollow fiber membrane module and production method thereof Download PDFInfo
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- CN102773018A CN102773018A CN2012102955037A CN201210295503A CN102773018A CN 102773018 A CN102773018 A CN 102773018A CN 2012102955037 A CN2012102955037 A CN 2012102955037A CN 201210295503 A CN201210295503 A CN 201210295503A CN 102773018 A CN102773018 A CN 102773018A
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Abstract
The invention discloses a hollow fiber membrane module and a production method thereof, and particularly provides a membrane module which is easy to clean, can effectively relieve the deposition of sludge and can reduce the rupture and breakage risks of membrane yarns and prolong the service life and a production method thereof. The hollow fiber membrane module comprises two membrane sheets consisting of a plurality of hollow fiber membrane yarns, the two ends of each membrane sheet are respectively connected with a water collecting assembly, the water collecting assembly is composed of a resin fixed box and a water collecting pipe, an end part of each membrane sheet is packaged in the resin fixed box through resins, the lower end of the resin fixed box is hermetically connected with the water collecting pipe, and an inner hole of each hollow fiber membrane yarn is communicated with the water collecting yarn; a gas-liquid mixture flowing channel in the process of aeration is formed jointly by a gap between the water collecting pipes of the two membrane sheets, a gap between the resin fixed boxes and a gap between the two membrane sheets; and the water outlet parts of the water collecting pipes of the two membrane sheets are connected through a connection joint. According to the module disclosed by the invention, the gas-liquid mixture flowing channel in the process of aeration can effectively relieve the deposition of sludge, improve the loading density of a membrane pool and reduce the floor space of a project.
Description
Technical field
The present invention relates to water-treatment technology field, particularly relate to a kind of hollow fiber film assembly and production method thereof.
Background technology
At present, the submerged membrane filtering technique has been widely used in water treatment field, and has become one of most popular sewage disposal technology.In the submerged membrane filtration system, hollow fiber film assembly is widely used in the filtration and leaching process of treatment fluid, is bringing into play more and more important effect.
The hollow fiber film assembly that is applied in the immersion filtration system mainly contains several kinds of forms such as curtain type film assembly, " U " type curtain type film assembly, " marine alga formula " assembly, column-type film components at present.
Wherein, curtain type film assembly adopts the both-end cast, and the film silk is monolithic or biplate is arranged, for the assembly of monolithic diaphragm; The film silk is too concentrated, and loading density is high, and diaphragm thickness is big; And aeration tube is installed in the assembly bottom when using, and assembly is difficult for cleaning, and it is high that mud alluvial probability takes place; For the assembly of biplate diaphragm, though reduced film silk loading density and diaphragm thickness to a certain extent, owing to the passage between two diaphragms seals, so limited to the remission effect of mud alluvial.In addition, aeration tube is installed between two diaphragms of an assembly, and during aeration, air-flow directly washes away hollow-fibre membrane silk surface, has increased the risk of the damaged fracture of film silk greatly, the service life of having reduced assembly.
" U " type curtain type film assembly adopts single-ended cast, and the film silk is " U " type arranges, and general cast end is last during use, and U type end is wrapped on the aeration tube.For this type assembly, its film filament length degree is a both-end pourable component twice, and this means is having the film silk to take place under the damaged situation, and its membrane area reduction will be far longer than the both-end pourable component, thereby reduces the service life of assembly; Secondly, this type assembly " U " type end has no protection, very easily stressed becoming in making and use to great " V " type of film silk damage, and then increase the damaged risk that ruptures of film silk.
" the marine alga formula " assembly adopts single-ended cast, and other end end socket is handled, and is fixing, but film silk sheet or column arrange, the cast end is down during use, the film silk is " marine alga " shape and swims in the pending liquid." marine alga formula " assembly since film silk stiff end below; For preventing that the film silk from self piling up, adopt the film silk of high rigidity to make, and the film silk pliability of high rigidity is relatively poor with the support own wt more; Judder is bad in water, and then influences the cleaning performance of assembly; In addition, must prevent that the film silk from piling up or winding mutually for every assembly is provided with framework when " marine alga " formula assembly uses, the difficulty of both increased production, installing and constructing has increased cost again.
Column-type film components adopts the both-end cast, and the rounded or square column of film silk is arranged, and there are solarization air cap or groove in the bottom, and beam splitting or fragment process are done in the upper end more, to improve the aeration cleaning performance.Pillar assemblies is with respect to curtain formula assembly, and the film silk is more concentrated, and the local filling of film silk is higher; Assembly cleans and just adds difficulty, and pillar assemblies limits because of its shape, and layout is difficult to compactness; The loading density of whole system is less than curtain formula assembly, causes the membrane cisterna floor space higher.
On production technology, said modules all is that all diaphragms (bundle) are processed simultaneously, and film silk loading density is high; Resin poor permeability during cast; The part is prone to the problem that resin can not soak into the film silk fully, causes producing the water end (W.E.) face and leak source defective in various degree occurs, and assembly can't use when serious.Simultaneously, because a plurality of diaphragms or film bundle are seated in the water leg, the film silk is difficult for combing, and the film silk that causes intersecting increases, and makes assembly in use more be prone to take place the mud alluvial.In addition, because the water leg finite capacity, existing production form very easily produces outermost film silk and is close to the phenomenon on the cell wall that catchments, and then influences the adhesive strength of resin and water leg.
In addition, when present membrane module carried out resin-cast, because the restriction of resin-cast box structure, the mode that thermosetting resin all adopts the upper end to inject caused resin to be prone to be infected with the film silk, makes the film silk quality crisp easily broken, can't normally use; When thermosetting resin was injected by cast box bottom, resin flows can be impacted the film silk, made charging hole film silk come-up on every side, when crop, can't endoporus be cut out, and influenced product quality.
Summary of the invention
The objective of the invention is provides a kind of easy cleaning to the technological deficiency that exists in the prior art, can effectively alleviate the mud alluvial, reduces the risk of the damaged fracture of film silk, improves the hollow fiber film assembly in service life.
Another object of the present invention provides a kind of production method of hollow fiber film assembly.
For realizing that the technical scheme that the object of the invention adopted is:
A kind of hollow fiber film assembly; Comprise two diaphragms forming by many hollow-fibre membrane silks; The two ends of every diaphragm are connected with the assembly that catchments respectively, and the said assembly that catchments is made up of resin fixed bin, collector pipe, and resin-encapsulated is passed through in said resin fixed bin in the end of every diaphragm; The lower end of said resin fixed bin and said collector pipe are tightly connected, and the endoporus of every hollow-fibre membrane silk is communicated with said collector pipe; The flow channel of gas-liquid mixed when the slit between the slit between the collector pipe of two diaphragms, between the resin fixed bin and two diaphragms constitutes aeration jointly; The water part of the collector pipe of two diaphragms connects through jointing.
Said jointing comprises collect cavity, and an end of said collect cavity is provided with the into water adapter of catchmenting that is connected with the collector pipe of two diaphragms respectively, and the other end of said collect cavity is provided with water outlet and takes over.
The thickness of every diaphragm is 3～10mm.
The width of the flow channel of gas-liquid mixed is 3-20mm during two diaphragm aerations.
A kind of production method of hollow fiber film assembly comprises the steps:
(1) choose the hollow-fibre membrane silk of specified quantity, an end is fixed on the support, and other end end socket is handled;
(2) a resin-cast box is fixed on the support; Said resin-cast box is made up of upper strata cast box and lower floor's cast box; In the said lower floor cast box orifice plate or screen cloth are installed; Form the charging cushion chamber between said orifice plate or screen cloth and the lower floor cast box bottom, said charging cushion chamber is provided with charging hole; Hollow-fibre membrane silk seal head end is seated on orifice plate or the screen cloth;
(3) in the resin-cast box, pour into thermosetting resin from charging hole, thermosetting resin leaves standstill after being poured into predetermined height, solidifies;
(4) end socket with resin-cast box orifice plate or the part below the screen cloth and orifice plate or the above hollow-fibre membrane silk of screen cloth partly machines away, and all endoporus of hollow-fibre membrane silk are exposed;
(5) the hollow-fibre membrane silk is unloaded and other end end socket is handled from support, repeating step (2)-(4) machined diaphragm other end is accomplished the making of monolithic diaphragm;
Lower floor's cast box rest parts at the monolithic diaphragm two ends that (6) will as above make is bonding with two collector pipes respectively;
(7) adopt the method for step (1)-(6) to make another sheet diaphragm;
(8) water part with the collector pipe of two diaphragms connects through jointing, the flow channel of gas-liquid mixed when the slit between the collector pipe, between the resin fixed bin constitutes aeration jointly with slit between two diaphragms, the making of single assembly of completion.
When in the step (3) when charging hole perfusion thermosetting resin cured be semisolid; In the cast box, pour into the flexible resin of predetermined altitude from the open upper end of upper strata cast box; Leave standstill, solidify fully, carry out step (4) again up to thermosetting resin and flexible resin.
The thickness of every diaphragm is 3～10mm.
Be provided with the reinforcement that connects the two side in the said upper strata cast box.
Distance in the step (8) between two collector pipes is 3-20mm.
Compared with prior art, the invention has the beneficial effects as follows:
1, in the membrane module of the present invention; The flow channel of gas-liquid mixed when the slit between the slit between the collector pipe of two diaphragms, between the resin fixed bin and two diaphragms constitutes aeration jointly; Significantly reduce the cleaning dead angle of assembly, improved the cleaning performance of assembly.Simultaneously, owing between the film silk penetrating runner is arranged, the assembly aeration does not almost have the dead angle when cleaning, can consider during use assembly up and down bilayer arrange, the scheme of only establishing aeration tube in lower floor, the utilization rate of air cuts down the consumption of energy when improving aeration greatly.Also improve simultaneously the loading density of membrane cisterna, reduced the project occupation of land area.
2, in the membrane module of the present invention, two diaphragms are contained in respectively in two resin fixed bins, during use; Aeration tube is installed in the assembly below; Air-flow no longer directly washes away hollow-fibre membrane silk surface, has reduced the risk of the damaged fracture of film silk, the service life of having improved assembly.And, in process of production, the easy combing of film silk, the film silk of intersection is less, makes assembly in use, is not easy to take place the mud alluvial.
3, membrane module of the present invention is divided into two with the film silk under the constant situation of membrane area, the local loading density of film silk is reduced, thereby more be prone to clean.
4, the production method of membrane module of the present invention, every diaphragm is made separately, has reduced the loading density of film silk on the one hand; Resin is flowed between the film silk more easily, and the resin permeability is strong, and resin can soak into the film silk fully; Avoid producing leak source, improved the quality of producing water; Reduced operation easier on the other hand, the film silk is prone to combing.Simultaneously, be convenient to outermost film silk and catchment and leave distance between the cell wall, the film silk can not be close on the cell wall that catchments, and has ensured the adhesive strength of resin and water leg.
5, production method of the present invention adopts the mode that thermosetting resin is injected by cast box bottom; And in lower floor's cast box, be provided with orifice plate or screen cloth; The film silk is seated on orifice plate or the screen cloth, is the chamber that buffering is held concurrently in charging under orifice plate or the screen cloth, can avoid the impact of resin flows to the film silk; Avoid the problem that can't endoporus be cut out when the crop that causes owing to the come-up of the film silk around the charging hole, improved product quality.
Description of drawings
Shown in Figure 1 for the front view of hollow fiber film assembly of the present invention;
Shown in Figure 2 for the side view of hollow fiber film assembly of the present invention;
Shown in Figure 3 for the vertical view of hollow fiber film assembly of the present invention;
Shown in Figure 4 is the collector pipe structural representation;
Shown in Figure 5ly partly cut open structural representation for collector pipe;
Shown in Figure 6 is the sketch map of jointing;
Sketch map for the cast box shown in Figure 7.
Among the figure: 1. diaphragm, 2. resin fixed bin, 3. water outlet is taken over, 4. collector pipe, 5. jointing, 6. flow channel, 7. upper strata cast box, 8. screen cloth, 9. reinforcement, 10. charging hole, 11. lower floors cast box, 12. water inlets are taken over.
The specific embodiment
Below in conjunction with accompanying drawing and specific embodiment the present invention is done further explain.
The sketch map of hollow fiber film assembly of the present invention comprises two diaphragms 1 being made up of many hollow-fibre membrane silks shown in Fig. 1-3, the thickness of every diaphragm is 3～10mm.The two ends of every diaphragm are connected with the assembly that catchments respectively.The said assembly that catchments is made up of resin fixed bin 2, collector pipe 4; Resin-encapsulated is passed through in said resin fixed bin 2 in the end of every diaphragm; The lower end of said resin fixed bin 2 and said collector pipe 4 are tightly connected, and the endoporus of every hollow-fibre membrane silk is communicated with said collector pipe.The flow channel 6 of gas-liquid mixed when the slit between the slit between the collector pipe of two diaphragms, between the resin fixed bin and two diaphragms constitutes aeration jointly.The width of the flow channel 6 of gas-liquid mixed was 3-20mm when the slit between the collector pipe of two diaphragms, between the resin fixed bin constituted aeration jointly.The water part of the collector pipe of two diaphragms connects through jointing 5.
The sketch map of said jointing is as shown in Figure 6, comprises collect cavity, and an end of said collect cavity is respectively arranged with the into water adapter 12 of catchmenting that is connected with the collector pipe of two diaphragms, and the other end of said collect cavity is provided with water outlet and takes over 3.
The production method of hollow fiber film assembly of the present invention comprises the steps:
(1) under the constant situation of membrane area, the film silk is divided into two.The quantity of hollow-fibre membrane silk and the cast of resin height are identical with prior art.The hollow-fibre membrane silk of choosing specified quantity is arranged in diaphragm in a conventional manner, and the thickness of diaphragm is 3～10mm.One end is fixed on the support with jig, and other end end socket is handled.
(2) a resin-cast box is fixed on the support; The sketch map of resin-cast box is as shown in Figure 7; Said resin-cast box is poured into a mould box 11 by upper strata cast box 7 with lower floor and is formed; Upper strata cast box and lower floor's cast box can be the structures of one, also can be that the branch body structure is through the bonding one that becomes.
In the said lower floor cast box 11 orifice plate or screen cloth 8 are installed, form the charging cushion chamber between said orifice plate or screen cloth and the lower floor cast box bottom, said charging cushion chamber is provided with charging hole 10, and hollow-fibre membrane silk seal head end is seated on orifice plate or the screen cloth.
(3) in the resin-cast box, pour into thermosetting resin from charging hole, thermosetting resin leaves standstill after being poured into predetermined height, solidifies.
(4) end socket with resin-cast box orifice plate or the part below the screen cloth and orifice plate or the above hollow-fibre membrane silk of screen cloth partly machines away, and all endoporus of hollow-fibre membrane silk are exposed.
(5) other end with the hollow-fibre membrane silk unloads and the end socket processing from support, and repeating step (2)-(4) machined diaphragm other end is accomplished the making of monolithic diaphragm.
Lower floor's cast box rest parts at the monolithic diaphragm two ends that (6) will as above make is bonding with two collector pipes respectively as adhesive portion.
(7) adopt the method for step (1)-(6) to make another sheet diaphragm.
(8) water part with the collector pipe of two diaphragms connects through jointing; The flow channel of gas-liquid mixed when the slit between the slit between the collector pipe, between the resin fixed bin and two diaphragms constitutes aeration jointly; Wherein, Distance between two collector pipes is 3-20mm, and the flow channel width of gas-liquid mixed is 3-20mm when making aeration, accomplishes the making of single assembly.
In order to protect the hollow-fibre membrane silk; For the membrane module that on thermoset resin layer, has the flexible resin layer, in step (3), when when charging hole perfusion thermosetting resin cured be semisolid; In the cast box, pour into the flexible resin of predetermined altitude from the open upper end of upper strata cast box; Leave standstill, solidify fully, carry out step (4) again up to two kinds of resins.
In order to strengthen intensity, be provided with the reinforcement 9 that connects the two side in the said upper strata cast box.
Membrane module of the present invention in use, many assemblies are connected in parallel on the water header, the spacing of adjacent component is 50～100mm.Can assembly individual layer or bilayer be arranged according to the membrane cisterna condition, aerating pipelines is installed in the assembly below, only installs at bottom when bilayer is arranged; Select the 3-5mm perforated pipe for improving the judder aerating pipelines, recommend to be installed under the assembly, also can be installed in the middle of adjacent two assemblies.During aeration, it is mobile along the flow channel 6 of gas-liquid mixed that gas promotes mixed liquor, and membrane module is cleaned.
The above only is a preferred implementation of the present invention; Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; Can also make some improvement and retouching, these improvement and retouching also should be regarded as protection scope of the present invention.
Claims (9)
1. hollow fiber film assembly; It is characterized in that comprise two diaphragms being made up of many hollow-fibre membrane silks, the two ends of every diaphragm are connected with the assembly that catchments respectively; The said assembly that catchments is made up of resin fixed bin, collector pipe; In said resin fixed bin, the lower end of said resin fixed bin and said collector pipe are tightly connected through resin-encapsulated in the end of every diaphragm, and the endoporus of every hollow-fibre membrane silk is communicated with said collector pipe; The flow channel of gas-liquid mixed when the slit between the slit between the collector pipe of two diaphragms, between the resin fixed bin and two diaphragms constitutes aeration jointly; The water part of the collector pipe of two diaphragms connects through jointing.
2. hollow fiber film assembly according to claim 1; It is characterized in that; Said jointing comprises collect cavity, and an end of said collect cavity is provided with the into water adapter of catchmenting that is connected with the collector pipe of two diaphragms respectively, and the other end of said collect cavity is provided with water outlet and takes over.
3. hollow fiber film assembly according to claim 1 is characterized in that, the thickness of every diaphragm is 3～10mm.
4. hollow fiber film assembly according to claim 1 is characterized in that, the width of the flow channel of gas-liquid mixed is 3-20mm during two diaphragm aerations.
5. the production method of the described hollow fiber film assembly of claim 1 is characterized in that, comprises the steps:
(1) choose the hollow-fibre membrane silk of specified quantity, an end is fixed on the support, and other end end socket is handled;
(2) a resin-cast box is fixed on the support; Said resin-cast box is made up of upper strata cast box and lower floor's cast box; In the said lower floor cast box orifice plate or screen cloth are installed; Form the charging cushion chamber between said orifice plate or screen cloth and the lower floor cast box bottom, said charging cushion chamber is provided with charging hole; Hollow-fibre membrane silk seal head end is seated on orifice plate or the screen cloth;
(3) in the resin-cast box, pour into thermosetting resin from charging hole, treat to leave standstill after thermosetting resin is poured into predetermined height, solidify;
(4) end socket with resin-cast box orifice plate or the part below the screen cloth and orifice plate or the above hollow-fibre membrane silk of screen cloth partly machines away, and all endoporus of hollow-fibre membrane silk are exposed;
(5) the hollow-fibre membrane silk is unloaded and other end end socket is handled from support, repeating step (2)-(4) machined diaphragm other end is accomplished the making of monolithic diaphragm;
Lower floor's cast box rest parts at the monolithic diaphragm two ends that (6) will as above make is bonding with two collector pipes respectively;
(7) adopt the method for step (1)-(6) to make another sheet diaphragm;
(8) water part with the collector pipe of two diaphragms connects through jointing, the flow channel of gas-liquid mixed when the slit between the collector pipe, between the resin fixed bin constitutes aeration jointly with slit between two diaphragms, the making of single assembly of completion.
6. the production method of hollow fiber film assembly according to claim 5; It is characterized in that; When be semi-solid from charging hole perfusion thermosetting resin cured in the step (3), in the cast box, pour into the flexible resin of predetermined altitude from the open upper end of upper strata cast box, leave standstill; Solidify fully up to thermosetting resin and flexible resin, carry out step (4) again.
7. according to the production method of claim 5 or 6 described hollow fiber film assemblies, it is characterized in that the thickness of every diaphragm is 3～10mm.
8. the production method of hollow fiber film assembly according to claim 7 is characterized in that, is provided with the reinforcement that connects the two side in the said upper strata cast box.
9. the production method of hollow fiber film assembly according to claim 8 is characterized in that, the distance in the step (8) between two collector pipes is 3-20mm.
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| CN2012102955037A CN102773018A (en) | 2012-08-20 | 2012-08-20 | Hollow fiber membrane module and production method thereof |
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| CN2012102955037A CN102773018A (en) | 2012-08-20 | 2012-08-20 | Hollow fiber membrane module and production method thereof |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103611421A (en) * | 2013-11-28 | 2014-03-05 | 苏州中色德源环保科技有限公司 | Immersed type ultra-filtration membrane assembly |
| CN104190261A (en) * | 2014-08-06 | 2014-12-10 | 桐乡市健民过滤材料有限公司 | High-packing-density hollow fiber membrane component and membrane unit |
| CN106040004A (en) * | 2016-07-15 | 2016-10-26 | 南京林业大学 | Integral package method for hollow fiber membrane module and special device for integral package method |
| CN106430544A (en) * | 2016-11-29 | 2017-02-22 | 江苏金梓环境科技有限公司 | Membrane equipment used for sewage treatment |
| CN109701394A (en) * | 2019-03-08 | 2019-05-03 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane putamina |
| CN109731476A (en) * | 2019-03-08 | 2019-05-10 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane piece |
| CN109758920A (en) * | 2019-03-08 | 2019-05-17 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane group device |
| CN111036084A (en) * | 2019-12-30 | 2020-04-21 | 湖北聚孚膜科技有限公司 | Array type hollow fiber filter membrane and preparation method thereof |
| CN111111456A (en) * | 2019-12-20 | 2020-05-08 | 天津膜天膜科技股份有限公司 | Method for evaluating life of hollow fiber membrane |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103611421A (en) * | 2013-11-28 | 2014-03-05 | 苏州中色德源环保科技有限公司 | Immersed type ultra-filtration membrane assembly |
| CN104190261A (en) * | 2014-08-06 | 2014-12-10 | 桐乡市健民过滤材料有限公司 | High-packing-density hollow fiber membrane component and membrane unit |
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| CN109701394A (en) * | 2019-03-08 | 2019-05-03 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane putamina |
| CN109731476A (en) * | 2019-03-08 | 2019-05-10 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane piece |
| CN109758920A (en) * | 2019-03-08 | 2019-05-17 | 湖北聚孚膜科技有限公司 | A kind of laminar-flow type hollow fiber filtering membrane group device |
| CN109731476B (en) * | 2019-03-08 | 2022-01-04 | 湖北聚孚膜科技有限公司 | Laminar flow type hollow fiber filter membrane |
| CN111111456A (en) * | 2019-12-20 | 2020-05-08 | 天津膜天膜科技股份有限公司 | Method for evaluating life of hollow fiber membrane |
| CN111111456B (en) * | 2019-12-20 | 2022-01-25 | 天津膜天膜科技股份有限公司 | Method for evaluating life of hollow fiber membrane |
| CN111036084A (en) * | 2019-12-30 | 2020-04-21 | 湖北聚孚膜科技有限公司 | Array type hollow fiber filter membrane and preparation method thereof |
| CN111036084B (en) * | 2019-12-30 | 2023-09-26 | 湖北聚孚膜科技股份有限公司 | Split type hollow fiber filter membrane and preparation method thereof |
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