Thaum sivrov qab osmosis membraneslos kho cov dej nyoos, tus nqi rov qab ntawm cov txheej txheem membrane yog ib qho tseem ceeb ntawm kev ua tau zoo, uas feem ntau tau txais kev saib xyuas zoo. Tus nqi rov qab siab qhia tau tias muaj peev xwm tso dej tawm tau zoo. Dab tsi yog qhov rov qab ntawm qhov rov qab osmosis membrane system? Cov hauv qab no yog cov lus piav qhia ntxaws los ntawmHID RO MEMBRANE:
1. Tus nqi rov qab ntawm qhov rov qab osmosis membrane system yog dab tsi?
Tus nqi rov qab yog hais txog qhov feem pua ntawm cov dej muaj zog hauv cov txheej txheem membrane uas tau hloov mus rau hauv cov khoom siv dej los yog cov permeates, uas yog txiav txim los ntawm cov dej ua ntej ua kom zoo thiab cov dej xav tau.
2. Rov qab tus nqi algorithm ntawm qhov rov qab osmosis membrane system
Tus nqi rov qab ntawm cov pa ib leeg-txhim kho rov qab osmosis membrane cov ntsiab lus yog nyob ntawm qhov zoo ntawm cov dej muaj zog, thiab qhov rov zoo li qub feem ntau ntawm 12% -50%. Tus nqi rov qab ntawm cov pa rov qab osmosis membrane systems kuj txawv ntawm 30% mus rau 90% nyob ntawm qhov ntsuas ntawm qhov system thiab qhov zoo ntawm cov dej nyoos.
Cov qauv kev suav ntawm tus nqi rov qab yog raws li hauv qab no:
R% = Fp/Ff × 100%
Hauv cov qauv:
Ff ---- thim rov qab osmosis membrane (system) inlet dej ntws tus nqi (m³ / h)
Fp ---- Dej ntws tus nqi ntawm rov qab osmosis membrane (system) (m³ / h)
R ---- Rov qab tus nqi ntawm rov qab osmosis membrane (system)
Los ntawm kev txiav txim siab ntawm tus nqi rov qab ntawm qhov rov qab osmosis membrane system, qhov concentration ntau ntawm cov ntsev cov ntsiab lus ntawm cov dej nyoos hauv qhov rov qab osmosis system tuaj yeem kwv yees kwv yees. Cov concentration ntau yog hais txog cov concentration ntawm cov tshuaj concentrated nyob rau hauv cov dej concentrated nyob rau hauv lub rov qab osmosis membrane system thiab cov ntsiab lus ntawm tib yam khoom nyob rau hauv cov dej pub. Qhov piv kuj tseem hu ua qhov concentration ntawm qhov rov qab osmosis system. Ua kom cov concentration ntau tuaj yeem ua rau kev siv dej ntau ntxiv, tab sis nws yuav ua rau kom cov dej khov thiab yooj yim ua rau scaling. Yog li ntawd, kev nkag siab txog qhov concentration ntawm qhov system yog qhov tseem ceeb heev rau peb kom nkag siab txog qhov fouling thiab kev ua qias tuaj ntawm cov concentrated waterside.
Cov mis laij lej ntawm qhov system concentration factor yog raws li nram no:
CF = 1/(1-R)
Qhov twg: CF ---- concentration factor
R ---- Rov qab tus nqi ntawm qhov rov qab osmosis system
Nws tuaj yeem pom tau tias qhov concentration ntawm cov dej nyoos nce ntxiv thaum tus nqi rov qab nce ntxiv, thiab thaum tus nqi rov qab ntau dua 75%, qhov sib txawv ntawm qhov concentration ntawm cov khoom yuav sai dua thiab pom tseeb dua.
3. Puas yog tus nqi rov qab ntawm qhov rov qab osmosis membrane siab npaum li qhov ua tau?
Qhov siab dua qhov kev rov qab los ntawm cov kab ke, cov dej tsis muaj zog tsawg dua, tab sis tus nqi rov qab siab dhau yuav ua rau cov dej tsis zoo. Kev nce tus nqi rov qab ntawm qhov system yuav nce qhov sib txawv ntawm qhov sib txawv ntawm ob sab ntawm rov qab osmosis membrane, uas ua rau muaj kev nce hauv cov ntsev cov ntsiab lus ntawm cov khoom dej; Kev nce hauv qhov rov qab los kuj tseem yuav ua rau lub zog tsav lub zog ntawm lub kaw lus poob, thiab thaum kawg ua rau txo qis hauv cov dej hauv qhov system. Kev tsim cov dej yuav tsum ua kom lub zog ua haujlwm ntawm lub cev, ua rau muaj kev nce nqi hauv kev ua haujlwm. Yog li ntawd, tus nqi rov qab yuav tsum tau teeb tsa raws li cov xwm txheej ntawm qhov rov qab osmosis system, tsis yog qhov siab dua.
4. qhov txwv sab sauv ntawm qhov rov qab ntawm qhov rov qab osmosis membrane system
Tus nqi rov qab tsis yog qhov xwm txheej ntawm qhov rov qab osmosis membrane, tab sis qhov tshwm sim ntawm tus tsim kev sib npaug ntawm cov khoom siv dej zoo thiab qhov loj ntawm cov dej concentrated. Qhov kev txwv sab saud ntawm tus nqi rov qab yog txiav txim siab los ntawm ob yam: qhov nyiam ntawm cov dej nyoos scaling thiab nyiam cov concentration polarization ntawm daim nyias nyias. Yog li ntawd, ua ntej teeb tsa tus nqi rov qab, nws yog qhov yuav tsum tau ua kom paub tseeb tias cov ntsev insoluble (xws li CaCO3, CaSO4, BaSO4, SrSO4, SiO2, thiab lwm yam). Thaum cov khoom ion ntawm cov ntsev insoluble nyob rau hauv cov kev daws yog ntau dua li nws cov khoom solubility, cov precipitate tej zaum yuav precipitated los ntawm cov tshuaj, thiab tus nqi rov qab mus rau lub siab tshaj plaws concentration ntawm concentrated dej uas guarantees tsis muaj nag lossis daus yog lub sab sauv txwv ntawm lub system rov qab tus nqi.
Post lub sij hawm: Aug-20-2020