Ntau lub ntsiab lus membrane yog siv nyob rau hauv kev lag luam kho dej, thiab ntau dua yog ultrafiltration membranes thiab thim rov qab osmosis membranes.Ob leeg ultrafiltration membranes thiab thim rov qab osmosis membranes yog consumables nyob rau hauv cov khoom kho dej.Qhov pore loj ntawm qhov rov qab osmosis membrane tsuas yog 1/100 ntawm cov ntaub ntawv ultrafiltration, yog li rov qab osmosis Cov khoom siv kho dej tuaj yeem tshem tawm cov hlau hnyav, tshuaj tua kab, chloroform, thiab lwm yam tshuaj lom neeg hauv dej.Ultrafiltration dej purifiers tsis muaj zog.Lub tshuab lim dej ultrafiltration tuaj yeem tshem tawm cov pa phem thiab cov kab mob, uas tuaj yeem raug tshem tawm los ntawm thim rov qab osmosis.
1. Qhov txawv ntawm cov khoom ntawm ultrafiltration membrane thiab thim rov qab osmosis membrane:
Qhov rov qab osmosis membrane yog ib qho khoom siv semi-permeable membrane nrog qee cov yam ntxwv ua los ntawm kev simulating ib tug bio semi-permeable membrane.Feem ntau yog ua los ntawm cov ntaub ntawv polymer.Txoj kab uas hla ntawm daim nyias nyias pores yog feem ntau ntawm 0.5 thiab 10 nm, thiab permeability muaj feem xyuam rau cov qauv tshuaj ntawm daim nyias nyias.
Ultrafiltration membrane yog ib hom microporous filtration membrane nrog tib qhov pore loj specification thiab cov pore loj npaum li cas ntawm 0.001-0.02 microns.Kev siv lub siab kom zoo ntawm ib sab ntawm daim nyias nyias tuaj yeem tshuaj xyuas cov kuab tshuaj molecules me dua li qhov pore loj kom cais cov khoom uas muaj qhov hnyav molecular ntau dua 500 Daltons (atomic mass units) thiab particle loj dua 10 nanometers.Lub ultrafiltration membrane yog ib qho ntawm thawj polymer sib cais daim nyias nyias tsim, thiab cov khoom siv ultrafiltration yog industrialized hauv xyoo 1960.
2. Qhov zoo thiab qhov tsis zoo ntawm ultrafiltration membrane thiab thim rov qab osmosis membrane:
Qhov zoo ntawm ultrafiltration: feem ntau tsis muaj twj, tsis muaj hluav taws xob noj, tsis muaj teeb meem kev nyab xeeb hluav taws xob;tsawg pob qij txha, tsis tshua muaj dej siab, tus nqi tsis ua hauj lwm tsawg, thiab qhov tshwm sim ntawm cov dej to;qauv yooj yim thiab tus nqi qis;
Qhov tsis zoo: cov nyhuv tsis zoo ntawm kev tshem cov tshuaj lom neeg hauv dej;cuam tshuam tsis zoo rau cov xwm txheej tshwj xeeb ntawm kev muab dej;me ntsis pluag saj ntawm dej;tsis tuaj yeem txo cov dej hardness, xws li siab hardness ntawm kais dej, boiling dej ntim tej zaum yuav fouled.
Ultrafiltration membrane tuaj yeem tshem tawm macromolecules, colloids, proteins, hais, thiab lwm yam hauv cov kev daws teeb meem, thiab muaj cov yam ntxwv ntawm qhov tsis tshua muaj siab, dej loj ntau lawm, thiab kev ua haujlwm yooj yim.Los ntawm kev sim cov kev kho mob ntawm cov hollow fiber ultrafiltration membrane ntaus ntawv rau kev sib sib zog nqus purification ntawm cov dej, nws yog pov thawj tias lub ultrafiltration membrane dej purification ntaus ntawv yuav zoo tshem tawm cov pa phem theem nrab ntawm cov dej nyob rau hauv cov yeeb nkab network thiab ntxiv txhim kho cov dej zoo.
Qhov zoo ntawm cov khoom siv rov qab osmosis dej kho: cov dej tsis zoo, tuaj yeem tshem tawm txhua yam teeb meem impurities hauv dej zoo;cov txiaj ntsig zoo dua rau cov xwm txheej tshwj xeeb ntawm kev siv dej;qhov zoo dua saj ntawm dej;tuaj yeem txo qhov hardness ntawm cov dej zoo, thiab lub taub ntim dej kub tsis yooj yim rau nplai;
Qhov tsis zoo: cov twj tso kua mis, kev siv hluav taws xob, teeb meem kev nyab xeeb hluav taws xob;ntau pob qij txha, dej siab siab, kuj tsis ua hauj lwm siab npaum li cas, thiab dej to yuav tshwm sim;complex qauv, thiab tus nqi kuj kim.
3. Daim ntawv thov ntau ntawm ultrafiltration membrane thiab thim rov qab osmosis membrane:
Kev siv ntau yam ntawm thim rov qab osmosis membrane
Hluav taws xob, petrochemical, hlau thiab hlau, hluav taws xob, tshuaj, zaub mov thiab dej haus, kev tswj hwm hauv nroog thiab kev tiv thaiv ib puag ncig thiab lwm yam kev lag luam, hauv kev desalination ntawm seawater thiab dej brackish, boiler pub dej, muaj dej ntshiab thiab hluav taws xob qib ultra- ntshiab dej npaj, haus cov dej ntshiab huv, kev kho dej khib nyiab thiab cov txheej txheem sib cais tshwj xeeb plays lub luag haujlwm tseem ceeb.
Daim ntawv thov ntau ntawm ultrafiltration membrane
Cov dej ntshiab thiab dej ntshiab yog siv los ua rov qab osmosis pretreatment thiab ultrapure dej davhlau ya nyob twg hauv cov txheej txheem npaj;cov dej muaj kev lag luam yog siv los cais cov kab mob, qhov chaw tshav kub, colloids, tshem tawm impurities, thiab macromolecular organics;dej haus, ntxhia dej purification;fermentation, Enzyme npaj kev lag luam thiab kev lag luam tshuaj concentration, purification, thiab qhia meej;kua txiv concentration thiab sib cais;soybean, khoom noj siv mis, qab zib kev lag luam, cawv, tshuaj yej kua txiv, vinegar, thiab lwm yam kev sib cais, concentration thiab qhia meej;muaj dej khib nyiab thiab dej phwj hauv tsev purification thiab rov qab;Rov qab cov xim electrophoretic.
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Post lub sij hawm: Sep-24-2020