Yuav ua li cas lub osmosis dej purification system tshem tawm cov yaj yaj?

Kom tau txais cov dej huv, nyab xeeb rau ntau yam kev lag luam thiab kev lag luam siv, ib osmosis dej purification system yog ib txoj hauv kev zoo heev los tshem tawm cov khoom khov uas yaj hauv dej. Lub vijtsam semi-permeable siv rau hauv cov thev naus laus zis siab heev no los cais cov dej molecules ntawm cov pa phem. Feem ntau ntawm cov khoom khov uas yaj lawm ploj mus tom qab qhov no. Txhawm rau kom kov yeej lub siab osmotic ntuj thaum lub sijhawm ua haujlwm, lub siab siv. Cov khoom loj dua, ions, thiab lwm yam khoom tsis huv raug thawb mus tom qab membrane thaum cov dej molecule hla dhau. Thaum kawg, qhov no ua rau muaj dej huv uas siv tau rau ntau yam, los ntawm kev ua zaub mov thiab dej haus mus rau kev ua tshuaj thiab khoom siv hluav taws xob.

Mechanism ntawm solute rejection los ntawm RO membranes

Lub plawv ntawm ib osmosis dej purification system nyob rau hauv nws rov qab osmosis (RO) daim nyias nyias. Cov sophisticated daim nyias nyias yog tsim los nrog microscopic pores uas tso cai rau cov dej molecules hla thaum thaiv cov khoom loj thiab cov khoom yaj. Kev tsis lees paub mechanism muaj ntau yam:

Qhov loj me tsis suav nrog

Qhov yooj yim tshaj plaws ntawm kev tsis lees txais cov tshuaj yog qhov tsis suav nrog qhov loj. ro cevs muaj qhov uas nyob nruab nrab ntawm 0.1 thiab 1 nanometer loj, uas yog me dua li feem ntau cov khoom khov thiab cov kab mob uas yaj. Cov molecule loj dua thiab cov ions tsis tuaj yeem hla dhau daim nyias nyias vim yog qhov kev thaiv lub cev no.

Charge repulsion

Nws yog qhov pab tau tias ntau RO daim nyias nyias raug them tsis zoo vim tias lawv thawb tawm cov ions tsis zoo uas muaj nyob hauv dej, xws li chloride, sulfate, thiab nitrate. Daim nyias nyias tuaj yeem tsis lees txais cov khoom tawg tau zoo dua vim tias qhov kev tawm tsam no, txawm tias cov khib nyiab me dua li daim nyias nyias qhov pores.

Diffusion tswj

Tus nqi ntawm cov dej molecules dhau los ntawm daim nyias nyias yog ntau dua li cov khoom yaj. Qhov sib txawv ntawm qhov sib txawv no ua rau muaj txiaj ntsig zoo rau tag nrho cov txheej txheem kev tsis lees paub, tso cai rau cov khoom zoo permeate.

Lub luag hauj lwm dab tsi yog siv lub siab ua si hauv kev tshem tawm?

Kev siv siab yog qhov tseem ceeb hauv kev ua haujlwm ntawm osmosis dej purification system. Nws ua haujlwm rau ntau lub luag haujlwm tseem ceeb hauv cov txheej txheem tshem tawm cov kuab tshuaj:

Overcoming osmotic siab

Lawm, dej nyiam txav los ntawm thaj chaw uas tsis tshua muaj kuab lom mus rau thaj tsam ntawm cov kua dej siab siab, txheej txheem hu ua osmosis. Hauv ib rov qab osmosis cog, thov siab yog siv los kov yeej lub ntuj osmotic siab, yuam dej nyob rau hauv qhov opposite txoj kev los ntawm lub semi-permeable membrane.

Txhim kho tus nqi ntws

Tus nqi flux yog tus nqi ntawm cov dej uas txav mus los ntawm daim nyias nyias ntawm ib cheeb tsam ntawm ib chav tsev ib lub sijhawm. Nws yog ncaj qha ntsig txog lub siab uas tau siv. Kev siab dua feem ntau ua rau tus nqi flux ntau dua, ua rau lub cev ua haujlwm tag nrho thiab tsim khoom.

Txhim kho kev tsis lees paub kev ua haujlwm

Raws li qhov kev thov siab nce, qhov kev tsis lees paub ntawm daim nyias nyias kuj tseem txhim kho. Qhov no yog vim tias siab dua pab tswj kev ncaj ncees ntawm cov qauv membrane thiab txhim kho nws lub peev xwm los thaiv cov khoom tawg.

Optimizing zog noj

Thaum siab dua tuaj yeem txhim kho kev ua haujlwm, nws kuj ua rau muaj zog siv zog. Niaj hnub nimno BWRO cov nroj tsuag tsim sim ua kom zoo dua qhov kev thov kom ua tiav qhov zoo tshaj plaws sib npaug ntawm kev tshem tawm kev ua haujlwm thiab kev siv lub zog.

Membrane cov ntaub ntawv: TFC, CA thiab xaiv yam

Kev xaiv ntawm cov khoom siv membrane plays lub luag haujlwm tseem ceeb hauv kev ua haujlwm thiab kev ua haujlwm ntawm osmosis dej purification system. Ob hom ntawm cov ntaub ntawv membrane yog dav siv nyob rau hauv RO systems:

Thin Film Composite (TFC) daim nyias nyias

TFC daim nyias nyias yog siv dav hauv cov tshuab RO niaj hnub, suav nrog BWRO cov nroj tsuag, vim lawv cov yam ntxwv ua tau zoo dua:

• Siab tsis kam ntsev tus nqi (txog 99.5%)
• Zoo heev tshuaj stability
• Kev tiv thaiv kab mob fouling
• Ntau yam ntawm pH ntau ntau
• Cov nqi ntws siab dua li CA membranes

TFC cov tshuaj ntxuav tau ua los ntawm ob peb txheej, xws li polyester txhawb txheej, ib txheej polysulforone, thiab ib qho ultra-nyias polyamide barrier txheej. Cov qauv no ua rau nws muaj peev xwm ua tau zoo thiab kav ntev kom ua tau zoo tshaj plaws.

Cellulose Acetate (CA) daim nyias nyias

Thaum tsis tshua muaj neeg nyiam hauv cov tshuab niaj hnub no, CA daim nyias nyias tseem pom cov ntawv thov hauv cov xwm txheej tshwj xeeb: Cov tshuaj chlorine siab dua piv rau TFC daim nyias nyias

Nqi tsawg

Smooder nto, tejzaum nws yuav txo tau fouling nyob rau hauv tej daim ntawv thov
Txawm li cas los xij, CA daim nyias nyias yuav tsis lees txais cov ntsev tsawg dua thiab yooj yim dua los ntawm dej, uas txwv lawv cov pH ntau thiab ua kom lawv lub neej luv.

Tej yam uas cuam tshuam rau kev xaiv

Kev xaiv ntawm RO membranes nyob ntawm ntau yam:

• Pore ​​loj thiab kev faib tawm
• Membrane nto nqi
• Qhov sib npaug ntawm hydrophilicity thiab hydrophobicity
• Thickness ntawm daim nyias nyias
• Cov yam ntxwv ua haujlwm (siab, kub, pH)

Cov khoom no cuam tshuam zoo npaum li cas daim nyias nyias tuaj yeem tsis lees paub qee yam ions thiab molecules. Qhov no txhais tau hais tias RO systems tuaj yeem hloov pauv kom haum rau cov kev xav tau ntawm kev kho dej sib txawv.

xaus

Cov tshuab lim uas siv osmosis, tshwj xeeb tshaj yog cov uas siv rov qab osmosis, muaj zog thiab zoo ntawm kev tshem tawm cov khib nyiab uas tov nrog dej. Siv cov tswv yim ntawm kev tshem tawm qhov loj me, kev them nqi rov qab, thiab tswj kev sib kis, cov tshuab no tuaj yeem ua kom cov dej zoo uas tuaj yeem siv rau hauv ntau qhov chaw lag luam thiab kev lag luam. Kev sib xyaw ua ke ntawm cov ntaub ntawv txiav-ntug membrane, ua tib zoo xaiv cov haujlwm ua haujlwm, thiab kev xav zoo-tsim qauv tsim ua rau nws muaj peev xwm tshem tawm cov kev daws teeb meem zoo heev thaum khaws cov nqi hluav taws xob qis thiab cov nqi khiav lag luam tsawg.

Raws li cov qauv rau cov dej zoo tau nruj dua hauv kev lag luam ntau dua, osmosis dej purification systems ua ntau dua thiab tseem ceeb. Cov tshuab no muab txoj hauv kev yooj yim thiab kev ntseeg siab los daws cov teeb meem kev kho dej, los ntawm kev ua kom cov dej huv huv kom ua tau raws li qhov xav tau nruj ntawm kev ua tshuaj thiab semiconductors.

FAQ

Q1: Dab tsi yog qhov nruab nrab ntawm lub neej ntawm RO membranes hauv osmosis dej purification system?

A: Lub neej ntev ntawm RO daim nyias nyias yog nyob ntawm cov khoom xws li cov dej zoo, kev tswj xyuas zoo npaum li cas, thiab nws siv li cas. Cov kab mob zoo hauv cov kab ke uas tau saib xyuas zoo tuaj yeem nyob nruab nrab ntawm 3 txog 5 xyoos. Qee cov membranes yuav kav ntev txog 7-10 xyoo, txawm li cas los xij, yog tias lawv tau saib xyuas zoo thiab siv rau qhov zoo tshaj plaws.

Q2: Cov huab cua cuam tshuam li cas ntawm kev ua haujlwm ntawm cov nroj tsuag rov qab osmosis?

A: Kub muaj qhov cuam tshuam loj npaum li cas RO system ua haujlwm zoo. Feem ntau, qhov kub siab dua ua rau cov dej ntws los ntawm daim nyias nyias, tuaj yeem txhim kho cov khoom tsim tau. Tab sis qhov kub thiab txias kuj tseem tuaj yeem ua rau nws tsis tshua muaj txiaj ntsig kom tshem tawm ntsev thiab tuaj yeem ua kom cov membrane tawg. Feem ntau RO tshuab tau tsim los ua haujlwm zoo tshaj plaws ntawm 20 ° C thiab 30 ° C (68 ° F thiab 86 ° F), tab sis lawv tuaj yeem hloov kho kom ua haujlwm kub siab dua lossis qis dua qhov no.

Q3: Ib tsob nroj BWRO puas tuaj yeem tshem tawm txhua yam khoom uas yaj hauv dej?

A: BWRO cov nroj tsuag zoo heev ntawm kev tshem tawm ntau yam ntawm cov khoom tawg, tab sis lawv yuav tsis tshem tawm tag nrho cov pa phem. Feem ntau, qhov tsis kam lees rau cov khoom tawg yog nyob nruab nrab ntawm 95 thiab 99.5%. Muaj lub caij nyoog uas qee cov molecules me me lossis cov khoom uas tsis muaj nqi yuav dhau los ntawm kev thaiv. Rau kev siv uas xav tau kev purity siab heev, cov kauj ruam ntxiv ntawm kev kho mob xws li electrodeionization (EDI) lossis sib xyaw txaj ion pauv yuav xav tau tom qab RO txheej txheem.

Zoo Osmosis Systems rau ntxuav dej | Morui

Peb tuaj Guangdong Morui Environmental Technology Co., Ltd. paub tias nws tseem ceeb npaum li cas rau koj txoj kev lag luam kom muaj cov tshuab lim dej uas ua haujlwm zoo thiab txhim khu kev qha. Peb cov tshuab lim dej osmosis tshiab kawg yog tsim los ua kom tau raws li qhov xav tau ntawm ntau yam lag luam, los ntawm cov uas ua zaub mov thiab dej haus mus rau cov uas ua tshuaj thiab khoom siv hluav taws xob.

Vim peb cog lus rau kev tsim kho tshiab thiab muaj ntau yam kev paub txog cov thev naus laus zis kho dej, peb tuaj yeem muab cov kev daws teeb meem tshwj xeeb uas ua haujlwm zoo heev thiab muaj nqis zoo. Peb Pab Neeg ntawm cov kws tshaj lij engineers thiab cov kws kho tshuab ua haujlwm nrog koj los tsim thiab teeb tsa lub tshuab lim dej zoo tshaj plaws rau koj cov kev xav tau.

Tsis txhob cia cov teeb meem nrog cov dej zoo tso tseg koj txoj haujlwm. Hu rau peb tam sim ntawd ntawm yog benson@guangdongmorui.com kom paub ntau ntxiv txog peb cov qib siab osmosis dej purification systems thiab yuav ua li cas peb tuaj yeem pab koj ua kom koj cov txheej txheem kho dej zoo dua. Cia Guangdong Morui yog koj tus khub txhim khu kev qha hauv kev txhim kho koj cov dej kom zoo thiab kev ua haujlwm ntawm koj txoj haujlwm.

References

1. Nws tau sau los ntawm Greenlee, LF, Lawler, DF, Freeman, BD, Marrot, B., thiab Moulin, P. Qhov chaw ntawm dej, thev naus laus zis, thiab cov teeb meem hauv kev rov qab osmosis desalination hnub no. Kev tshawb fawb hauv Dej, 43(9), 2317–2348.

2. Lawv yog Lee, KP, Arnot, TC, thiab Mattia, D. (2011). Kev tshuaj xyuas ntawm cov ntaub ntawv rov qab osmosis membrane siv rau desalination, suav nrog kev nce qib tau ua kom deb li deb thiab yuav muaj dab tsi tshwm sim yav tom ntej. 370(1), 1–22 nyob rau hauv phau ntawv Journal of Membrane Science.

3. Malaeb, L., & Ayoub, GM (2011). Rov qab osmosis thev naus laus zis rau kev kho dej: Kev tshuaj xyuas lub xeev. Desalination, 267(1), 1–8.

4. Cov kws sau ntawv yog Fritzmann, C., Löwenberg, J., Wintgens, T., thiab Melin, T. (2007). Lub xeev-ntawm-tus-kos duab ntawm thim rov qab osmosis desalination. Desalination, 216(1-3), 1-76.

5. Elimelech, M., & Phillip, WA (2011). Lub neej yav tom ntej ntawm seawater desalination: Zog, technology, thiab ib puag ncig. Science, 333(6043), 712-717.

6. Ghaffour, N., Missimer, TM, & Amy, GL (2013). Kev tshuaj xyuas thiab kev ntsuam xyuas ntawm kev lag luam ntawm dej desalination: tam sim no thiab yav tom ntej cov kev cov nyom rau cov dej zoo sustainability. Desalination, 309, 197-207.