UF Membrane Motian [PDF]

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创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



Brief introduction Being one of subsidiary companies of Shandong Zhaojin Group Co., Ltd, Shandong Zhaojin Motian Co., Ltd (Motian) is a large water treatment company with registered capital of 50 million yuan and total assets of 110



R&D History of Membrane Products of Motian



million yuan. The company is engaged in membrane separation products, engineering design and installation. ZhaoJin Motian plays an important role in membrane industry and resource recycling domain (such as: MF, UF, RO, EDI, liquid degassing membrane etc.). We participate and presided in constituting " UF Membrane Plant Profession Standard", " UF Module Profession Standard", "MF Module Profession Standard", "RO water



In 1988, Motian firstly achieved the transferring from lab test to industrial production of separative membrane fabrication in China. The first outside-in membrane module made-in-China, used for concentration and separation in industrial production was born in Motian.



treatment equipment National standards" membrane industry standard. With modernized producing condition and excellent quality management, the company passed through "ISO9001" international quality system certification, “ISO14001” environmental management system certification and “GB/T28001” occupational health safety management system certification .



In 1989, Motian developed and produced inside-in PS UF membrane, which was widely used in water treatment field. In 1990, Motian successfully developed molten stretching PP hollow fiber membrane.



By scientific management, strong economic and perfect technical and good post-sale service, It has excellent repute both domestic and abroad, and also obtained recognized from the country and province government. The company is designated as “the member of China national torch plan”, “science and technology stress spreading plan”, “China membrane industrial association vice secretary-general”, “China membrane industrial standardization vice director”,



“International desalination association director”,



“membrane engineering technology developing center, Shandong province”, “China national torch plan high



In 1992, Motian started to produce folded Micro-pore filtration membrane. In 1993, Motian occupied 80% China’s market shares of UF equipment for mineral water bottling. In 2002, the developing fabrication technology of Hollow Fiber Membrane made by Thermal Induced Phase Separation was listed in the projects of National “863 Program”.



and new technology enterprise”, “the member of national 863 Plan”. MOTIAN is undertaking the industrial demonstrate project of “membrane module and system treatment equipment for waste water treatment”. “MOTIAN” brand was awarded as ShanDong famous brand.



In 2003, Motian undertook the project of Development of Membrane Module and System Used for Wastewater Treatment, which was listed in National Industrialization Demonstration Program. In 2005, Motian successfully implemented industrialization production of Hollow Fiber Membrane Made by Thermal Induced Phase Technology. In 2006, Motian established a Joint venture, Yantai Motian Petro Sep Membrane Technologies Co., Ltd. and imported the first production line using Thermal Induced Phase Separation technology to produce hollow fiber membrane. In 2006, Shandong Provincial Engineering and Technology R&D Center of Membrane Separation Materials established at Motian. In 2007, Motian successfully developed a membrane bioreactor used for wastewater treatment. In 2008, Motian production base was established at Zhaoyuan High-tech Development Zone, the production ability achieve 5 million square meter per year.



· 0 1·



·02·



创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



UltraFilter Brief Introduction



和 谐



水



世 界



The liquid to be filtered is not circulated, the recovery is 100%. The difference pressure between the inner and out of the membrane.



Trans-membrane Pressure



In the kingdom of separation membrane, we can find four separation process: microfiltration，ultrafilteration,



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INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



Overall Flow



◆ P r inc ip le



膜



P=(Pfeed+Pconcentrate)/2-Ppermeate



Differential Pressure



The difference pressure between the feed side and concentrate side,



Colloidal Fouling



T h e c o l l o i d a l a g g r e g a te d o n th e s u r fa c e of membrane.



Concentration Polarization



T h e r e j e c te d p a r ti c l e c o l l e c te d o n th e s u r face of membrane,



Forward Flow



When the module was installed upright, forward flow means the



P=Pfeed-Pconcentrate



nanofiltration, reverse osmosis. They are all pressure drived, the raw liquid passed through the membrane, dissolvent or small molecular can permeate this membrane and become product liquid , while large molecular (protein, nucleic acid, polysaccharide and so on) colloid particle (such as emulsion, micro-ion) and bacterium are cut off and are taken off by the circulating flowing feed liquid to become concentrating. The pore size of the UF membrane is about 0.001-0.1µm, Cut Off Molecular Weight(MWCO) from1000 to 500,000



i t c a n d e c r e a s e th e fl u x .



Dalton. UF has the ability to absolutely reject suspension, colloid particle, macromolecule, the BOD and COD removing rate is about 20%-60%, but it have no effect to the micromolecule and inorganic ion.



direction of raw liquid is upwards.



UF membrane can separate into four configuration: flat, roll, tubular, hollow fiber. Flat: small specific surface area, small capability, limited application. Roll: suitable for the separation of high pressure, can’ t back-flushing, need strict pretreatment.



When the module was installed upright, downward flow means



Downward Flow



th e d i r e c ti o n o f r a w l i q u i d i s d o w n w a r d s .



Tubular: high energy consume, suitable for the separation of high concentration circumstance. Hollow fiber: high packing density, low conduct pressure, high flux, can back–flushing.



◆ U F Ter m Ultr afi l tr atio n Anisotr opic Me mbra n e



A kind of filter which can cut off the small particle about 0.001-0.1um.



The direction of cleaning dosage and feed is the same.



Downward wash



T h e d i r e c ti o n o f c l e a n i n g d o s a g e a n d fe ed w ere di fferent.



Back-flush



The direction of cleaning dosage was different from permeate, so the fouling can sweeped by the dosage.



One of synthesize macromolecule hollow fiber membrane, compose by dense separation layer and sponginess support The character of the UF membrane, defined by standard particle, when the



M ol ecul ar Weig h t Cut off



Forward wash



◆UF basic conception



removal rate of this particle over 90% we see the particle’ s molecule weight is Molecular Weight Cut off



Feed



Critical flux: at low Trans-membrane



Raw water enter the UF system, after filter become Permeate and C o n c e n t r a t e



linearity



Per m eate Concentr ate



The part of water passed through membrane, had removed the suspe n s i o n , c o l l o i d p a r t i c l e a n d b a c t e r i a .



relation,



but



along



with



increase of the TMP, the linearity relation disappear, at this time the flux named



The part of water rejected by membrane, the suspension,



critical flux. When the flux bigger than this



collo i d , a n d b a c t e r i a c o n c e n t r a t i o n w e r e h i g h e r t h a n r a w w a te r .



critical value, flux was changeless with the



Recover y Cross Flow · 0 3·



The quantity of water passed through membrane, defined as quant i t y o f w a t e r p a s s e d t h r o u g h t h e m o d u l e p e r h o u r , m 3 / h .



but



the



membrane’s



fouling



Purified Water Surface fouling



the



TMP, the flux is not increase with the TMP,



Flux



J



Pressure(TMP), the flux and TMP are



Flux J2



Pore fouling increase cross low



J1



would



aggravate when the TMP over this value.



A term for cross flow, means the percentage of permeate,



So for the sake of the membrane’s stable



recove r y %= p e r m e a t e / f e e d



usage, we should control the TMP, make



The medium to be filtered is fed at high velocity over the



sure it below the critical flux.



TMP



mem b r a n e ’ s s u r f a c e .



·04·



创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



Concentrate water



Cross-Flow Mode: In the cross-flow mode the medium to be filtered



MOTIAN UF Technology Specification



was fed at high velocity over the membrane’s surface. This result in Permeate



the generation of high shear force so the particles are not deposited on the membrane surface easily. Percentage of permeate defined as



◆ ZHAOJIN MOTIAN UF Membrane Specification



recovery, for worse water quality, high recovery can lighten the fouling of the membrane. The concentrate recirculated back into raw water tank or inlet of pretreatment, and then enter the system again.



ZHAOJIN MOTIAN UF membrane is hollow fiber mode, we own inside-in mode and outside-in mode. The



Use the cross-flow can induce the fouling of the membrane, but it



material can be polysulfone, polyethersulfone, polyvinylidenefluonde, and so on.



need more feeding and need more concentrate pump, so it consume



In order to satisfy various requirement, we can offer many size of production, the Molecular Weight Cut off can



Feed



more energy.



be 6,000 、 10,000 、 20,000 、 67,000 and 100,000. The diameter of module are 90cm 、 125cm 、 160cm 、 200cm 、 225cm 、 315cm.



Dead-End Mode



A, good hydrophilic, big flux.



Dead-End Mode:



B, good ability to bear chemical medicine, broad PH work range.



In this mode the liquid to be filtered was not



Permeate



circulated, all contamination was deposited onto the surface of



C, high intensity, no rupture, long life.



membrane, so back-flush is needed to clean the membrane. This



D, simply cleaning, good flux recovery.



mode is suitable for the better water quality, it is characterized by



ZHAOJIN MOTIAN UF membrane can widely



low energy consumption because of no concentration.



used in electrical plant, electron, mine, foodstaff,



hollow fiber membrane



The trait of UF membrane:



medicine, medical treatment, petroleum chemical,



Feed



Inside－in Mode



desalt, and so on.



When use this mode the feed enter the



membrane from the inside, micromolecule pass through the membrane became the permeate, macromolecule were rejected



◆ ZHAOJIN MOTIAN UF Module



Permeate



by the inner of hollow fiber became the concentrate.



UFm Feed Outside － in Mode



hollow fiber became the permeate, macromolecule were rejected by the outside surface of hollow fiber.



X X



X



Concentrate Module length（S means short module，L means long module）



the feed enter the membrane from the outside,



micromolecule pass through the membrane enter the inner of the



X



SEM of hollow fiber membrane



bio-chemical, reclaimed water reuse, seawater



Module outer diameter



Feed



A: outer diameter join B: screw join Concentrate



I:inside-in；O:outside-in 1:PS 2, :PES ,3:PVDF UltraFiltration membrane



Permeate



· 0 5·



Example: UF1IB90 means hollow fiber module, material is polysulfone, inside-in mode, screw join, outer diameter is 90mm.



·06·



创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



◆ ZHAOJIN MOTIAN UF Module Parameter



UF1OB90 UF Module Picture



UF1IB90 UF Module Picture UF water side DN20



Concentrate water side DN20



Feed water side DN20



103 80



103 80



110



110



90



90



Feed water side DN20



UF water side DN20



Concentrate water side DN20



Concentrate water side DN20



UF water side DN20 910 1000 1102



910 1000 1102



1148



1148



UF1IB90 UF Module UF1OB90 UF Module



· 0 7·



Dimension



Φ90×1000m m



Dimension



Φ90× 1000mm



Membrane Area



5m 2



Membrane Area



18m 2



Original Flux*



0. 8m 3 / h. 25 ℃. 0. 1 Mp a



Original Flux*



0.3m 3 /h.25 ℃ .0.1Mpa



Design Flux



0. 3- 0. 5 m 3 / h



Inner and outer diameter of hollow fiber



0.2mm/0.4mm



Inner and outer diameter of hollow fiber



1. 0m m / 1. 5m m



Molecular Weight Cut off (MWCO)



6,000 D al / 20,000 D al



Molecular Weight Cut off



10000 ， 67000 / 1 0 0 0 0 0 Da l



Configuration Mode



outsi de-i n mode



Configuration Mode



I nt er nal pr essur e mo d e



Membrane Material



P ol ysul fone



Membrane Material



Polysulf one



Seal glue material



epoxi de resi n or pol yurethane



Seal glue material



Epoxide r esin or P o ly u re t h a n e



Shell material



P ol ymethyl methacryl ate



Shell material



Polym et hyl m et ha c ry la t e



Feed dimension



D N 20



Feed dimension



DN20



Permeate dimension



DN 20



Permeate dimension



DN20



Concentrate dimension



DN 20



Concentrate dimension



DN20



Weight



6. 5K g



Weight



5. 5Kg



·08·



创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



◆ ZHAOJIN MOTIAN UF Module Parameter



UF 1IB160 UF Module Picture



UF 1IB125 UF Module Picture 1407



Concentrate water side DN40



Concentrate water side



160



Feed water side DN40



DN32



177



190.5



178



154.5



125



218



Feed water side DN32



UF water side DN25



UF water side DN25 988



UF water side DN25



UF water side DN25



1100



990



1292



1092 1350



UF 1IB160 UF Module



UF 1IB125 UF Module Dimension



Φ125×1092mm



Dimension



Φ160×1100mm



Membrane Area



10m2



Membrane Area



20m2



Original Flux*



1.6m3/h.25℃.0.1Mpa



Original Flux*



3.0m3/h.25℃.0.1Mpa



Design Flux



0.6-1.0 m3/h



Design Flux



1.0-2.0 m3/h



Inner and outer diameter of hollow fiber



1.0mm/1.5mm



Inner and outer diameter of hollow fiber



1.0mm/1.5mm



Molecular Weight Cut off



10000,67000和100000Dal



Molecular Weight Cut off



10000,67000和100000Dal



Configuration Mode



Internal pressure mode



Configuration Mode



Internal pressure mode



Membrane Material



Polysulfone



Membrane Material



Polysulfone



Seal glue Material



Epoxide resin or Polyurethane



Seal glue Material



Epoxide resin or Polyurethane



Shell Material



Polymethyl methacrylate



Shell Material



UPVC



Feed Dimension



DN40



Feed Dimension



DN32



Permeate Dimension



DN25



Permeate Dimension



DN25



Concentrate Dimension



DN40



Concentrate Dimension



DN32



Weight



12.5Kg



Weight



22.5Kg



· 0 9·



·10·



创 新



山东招金膜天有限责任公司



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天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



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和 谐



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INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



◆ ZHAOJIN MOTIAN UF Module Parameter



UF 1IA200 UF Module Picture Feed water side DN40



UF 1IA225 UF Module Picture



200



Concentrate water side DN40



1745 Feed water side DN40



Concentrate water side DN40



260



1708



UF water side DN40



197



1495



160.5



UF water side DN40



Ø 225



1503 Ø251



160



197



1597



1650 1860 1934 UF water side DN40



UF 1IA200 UF Module



· 1 1·



Dimension



Φ200×1650mm



Membrane Area



UF 1IA225 UF Module



Dimension



Φ225×1503mm



35m2



Membrane Area



35m2



Original Flux*



6.0m3/h.25℃.0.1Mpa



Original Flux*



6.0m3/h.25℃.0.1Mpa



Design Flux



2.0-3.5 m3/h



Design Flux



2.0-3.5 m3/h



inner and outer diameter of hollow fiber



1.0mm/1.5mm



Inner and outer diameter of hollow fiber



1.0mm/1.5mm



Molecular Weight Cut off



10000,67000和100000Dal



Molecular Weight Cut off



10000,67000和100000Dal



Configuration Mode



Internal pressure mode



Configuration Mode



Internal pressure mode



Membrane Material



Polysulfone



Membrane Material



Polysulfone



Seal glue Material



Epoxide resin or Polyurethane



Seal glue Material



Epoxide resin or Polyurethane



Shell Material



UPVC



Shell Material



UPVC



Feed Dimension



DN40



Feed Dimension



DN40



Permeate Dimension



DN40



Permeate Dimension



DN40



Concentrate Dimension



DN40



Concentrate Dimension



DN40



Weight



50Kg



Weight



65Kg



·12·



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山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



◆ ZHAOJIN MOTIAN UF Module Parameter



UF 1IA315S UF Module Picture



UF 1IA315L UF Module Picture 1391 1302 984



1910 1821



780



1503 1299



UF water side DN50



DN50



UF water side DN50



346



315



Concentrate water side Feed water side DN50



DN50



Feed water side DN50



Concentrate water side DN50



UF 1IA315L UF Module



UF 1IA315S UF Module



· 1 3·



215



346



315



259.5



215



259.5



DN50



Dimension



Φ315× 984mm



Dim ension



Φ315×1503m m



Membrane Area



55m 2



M em br ane Ar ea



80m 2



Original Flux*



8.5m 3 /h.25 ℃. 0.1Mpa



O r iginal Flux*



13m 3 / h. 25 ℃. 0. 1M pa



Design Flux



3.0-5.0m 3 /h



Design Flux



4. 5- 8. 0m 3 / h



Inner and outer diameter of hollow fiber



1.0mm/1.5mm



I nner and out er diam et er of hollow f iber



1. 0m m / 1. 5m m



Molecular Weight Cut off



10000,67000 和 100000D al



M olecular Weight Cut of f



10000, 67000 和 10000 0 Da l



Configuration Mode



Internal pressure mode



Conf igur at ion M ode



I nt er nal pr essur e m o d e



Membrane Material



P ol ysul fone



M em br ane M at er ial



Polysulf one



Seal glue Material



E poxi de resi n or P ol yurethane



Seal glue M at er ial



Epoxide r esin or Poly u re t h a n e



Shell Material



UPVC



Shell M at er ial



UPVC



Feed Dimension



D N 50



Feed Dim ension



DN50



Permeate Dimension



D N 50



Per m eat e Dim ension



DN50



Concentrate Dimension



D N 50



Concent r at e Dim ension



DN50



Weight



62kg



Weight



95kg ·14·



创 新



山东招金膜天有限责任公司



膜



天



SHANDONG ZHAOJIN MOTIAN CO.,LTD.



膜



科 技



和 谐



水



世 界



INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



Directions For Industrial The operation process and flush direction were on this table：



ZHAOJIN MOTIAN’s UF membrane for industrial have six operational mode: usual filter, downward flushing,back-flush, forward wash, chemical wash, integrality check. In the usual mode, operational method can be cross flow or overall flow according as the feed water quality. The overall flow mode have no concentrate, all the feed water were purified, while the cross flow have concentrate, this part were discharged with concentrated macromolecule, but the shear force caused by the cross flow mode can reduce the fouling of the membrane. On the operating process, the colloid particle, suspension, bacterium and so on were rejected and assemble on the surface of the membrane, this instance was fouling, which would decrease the flux. So in order to keep the flux, maintain the membrane’s stability, the cleaning plan should be introduced. The cleaning method can classify into two kinds, physical cleaning and chemical cleaning.



Physical cleaning approach: Downward wash: use the feed water flush the membrane’s surface and feed side. Back flush: use the permeate to flush the fouling, the permeate water was entered from the permeate path and discharged from feed and concentrate path(can use the acid, alkali and sodium hypochlorite to strengthen the cleaning effect). Forward wash: use the feed water to flush the inner of the hollow fiber and end.



Sequence



Process



Chemical cleaning approach: Through the periodical physical cleaning can well maintain the membrane’s flux, with the



A to B，C 1



A to C 2



Note Cross flow



Normal filtrate



operation time the fouling were also aggravated sequential. In order to recover the flux more effective, the chemical cleaning should be introduced. The special chemical agent should be choosen for special



Direction



Downward wash



Dead-end flow



B to A



instance. ZHAOJIN MOTIAN can offer suitable lotion for every fouling, the detail specification could be found on our cleaning handbook. Consumer could also choose the usual acid and alkali as chemical agent, we advice acid first, and then alkali. The acid can be citric acid with the 2% concentration, the



3



C to A



Discharge from up side



C to B



Discharge from down side



Back flush



alkali can be 1-2% sodium hydroxide.



Integrity Test



4



Forward wash



A to B



5



Chemical clean



A to B，C



6



Integrity test



circulation



The hollow fiber would fracture because of improper use, the location of the gap could decrease the quality of the permeate. So the integrity test is possible. For this test, the closed on one side and then vertically set on this closed end, the concentrate side of the module is filled with water. On the filter side compressed air is applied at a pressure of



C to B



Compressed air



C to A



Test the other side



0.05 to 0.08Mpa. The membrane impermeable for compressed air. Should bubbles rise within the hollow fiber during this test, this is to be considered as an indicator for the leakage in the hollow fiber. This locations are then marked and can be sealed with epoxide resin. The seem method was used to test the other side.



· 1 5·



·16·



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山东招金膜天有限责任公司



膜



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SHANDONG ZHAOJIN MOTIAN CO.,LTD.



UF1I



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INNOVATIVE MEMBRANE TECHNOLOGY，HARMONIOUS WATER SOCIETY



ZHAOJIN MOTIAN UF Design Approach



Hollow Fiber Main Technical Specification



Item



膜



UF 1O



Permeate turbidity



＜0.1NTU



＜0.1NTU



Bacteria removal rate



＞5log



＞6log



Filtration Type



inside－in mode



External pressure type



Membrane material



PS



PS



MWCO



10,000 and 67,000 Daltons



6,000 and 20,000 Daltons



Fiber dimensions



ID: 1.0mm OD: 1.5mm



ID: 0.2mm OD: 0.4mm



Design water flux



60-100L/m2/h



According to experiment



Maximum Applied Feed Pressure



0.3MPa



0.3MPa



Raw water Turbidity