Rov qab osmosis (RO) thev naus laus zis tau hloov kho dej kom huv, muab txoj hauv kev txhim khu kev qha kom tau txais cov dej huv huv los ntawm ntau qhov chaw. Raws li ib tus neeg nkag siab tob rau hauv txoj kev tshawb fawb thiab kev siv cov thev naus laus zis kho dej, kuv pom cov hauv paus ntsiab lus tom qab RO txaus nyiam thiab tseem ceeb rau kev nkag siab rau txhua tus neeg nrhiav kom nkag siab nws cov txiaj ntsig.

Cov Txheej Txheem Ua Haujlwm:

Rov qab osmosis ua haujlwm ntawm lub hauv paus ntsiab lus ntawm kev xaiv cia cov kuab tshuaj molecules kom dhau los ntawm cov khoom siv semipermeable thaum tsis lees txais cov kab mob. Hauv cov ntsiab lus yooj yim, nws cais cov dej huv los ntawm impurities los ntawm kev siv lub zog los yuam cov dej los ntawm daim nyias nyias uas thaiv cov molecules loj thiab ions. Cov txheej txheem no tshem tawm cov ntsev yaj, cov kab mob, cov kab mob, thiab lwm yam teeb meem, tawm hauv qab dej huv uas haum rau kev noj.

Lub RO daim nyias nyias, ib qho tseem ceeb, muaj cov pores me me uas tso cai rau cov dej molecules hla thaum dai cov khoom loj. Qhov kev xaiv permeability no ua kom ntseeg tau tias tsuas yog dej huv tuaj yeem nkag mus rau hauv daim nyias nyias, thaum cov impurities raug tso tseg thiab ntws tawm.

Kev ua tau zoo ntawm RO Membrane:

Kev ua haujlwm ntawm RO membrane yog qhov tseem ceeb hauv kev txiav txim siab tag nrho cov txiaj ntsig ntawm cov txheej txheem rov qab osmosis. Nws yog feem ntau ntsuas los ntawm feem pua ​​​​ntawm cov khoom paug tawm ntawm cov dej pub, hu ua tus nqi tsis lees paub.

RO membranes khav theeb qhov kev tshem tawm zoo rau ntau yam kab mob, suav nrog cov ntsev yaj, cov hlau hnyav, thiab cov organic tebchaw. Cov ntaub ntawv zoo tshaj plaws tuaj yeem ua tiav qhov kev tsis lees paub ntau dua 99%, ua kom cov dej huv huv raws li cov qauv nruj.

Txawm li cas los xij, nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias cov khoom tsim tau ntawm RO txheej tuaj yeem cuam tshuam los ntawm ntau qhov sib txawv, xws li kev txhawb nqa dej zoo, kev ua haujlwm, thiab txheej astuteness.Kev tu thiab kev saib xyuas tsis tu ncua yog tsim nyog los xyuas kom meej qhov kev ua tau zoo thiab kev ua haujlwm ntev ntawm daim nyias nyias..

Hom RO Membranes:

Tam sim no peb tau ruaj ntseg txoj cai ua hauj lwm thiab cov khoom tsim tau ntawm RO txheej, cia peb dhia mus rau peb yam tseem ceeb ntawm RO zaj duab xis uas feem ntau siv hauv kev kho dej:

1. Cellulose Acetate (CA) Membranes:

Cellulose acetate membranes yog thawj zaug siv hauv kev lag luam RO systems. Cov daim nyias nyias no kuj pheej yig thiab muaj kev tiv thaiv zoo rau cov organic fouling, ua rau lawv tsim nyog rau kev kho cov dej pub mis nrog tsawg mus rau nruab nrab fouling peev xwm. Txawm li cas los xij, CA daim nyias nyias yog qhov ua rau degradation thaum raug cov tshuaj chlorine thiab tsis tshua muaj txiaj ntsig ntawm kev tsis lees paub qee yam kab mob piv rau cov ntaub ntawv membrane tshiab.

2. Thin Film Composite (TFC) Membranes:

Nyias zaj duab xis composite daim nyias nyias sawv cev rau kev nce qib tseem ceeb hauv RO membrane technology. Cov daim nyias nyias muaj nyias txheej polyamide hla cov khoom siv ntxeem tau, muab cov kev tsis lees paub siab thiab zoo heev tiv thaiv fouling thiab tshuaj degradation. TFC daim nyias nyias yog siv dav hauv thaj chaw, kev lag luam, thiab kev lag luam RO vim lawv qhov kev ua tau zoo thiab ua haujlwm ntev.

3. Polyamide Thin Film (PA) Membranes:

Polyamide nyias daim nyias nyias zoo ib yam li TFC daim nyias nyias tab sis muaj cov txheej txheej denser polyamide, muab kev txhawb nqa kev tsis lees paub rau cov khoom tawg thiab cov kab mob. PA daim nyias nyias muaj qhov zoo tshaj qhov tsis lees txais ntsev thiab permeate flux piv rau lwm hom membrane, ua rau lawv zoo tagnrho rau cov ntawv thov uas xav tau dej purity siab, xws li kev tsim tshuaj thiab desalination.

Hauv kev xaus, thim rov qab osmosis thev naus laus zis tso siab rau kev sib cuam tshuam ntawm cov khoom siv semipermeable thiab siv lub siab kom xa dej huv, huv si. Kev nkag siab txog cov qauv kev ua haujlwm thiab ntau hom RO daim nyias nyias yog qhov tseem ceeb rau kev xaiv cov kev daws teeb meem zoo tshaj plaws rau kev kho dej tshwj xeeb.

References:

American Water Works Association - Rov qab Osmosis Membrane Technology

US Environmental Protection Agency - Rov qab Osmosis

Water Quality Association - Rov qab Osmosis Systems