Chlorine yog ib hom tshuaj tua kab mob uas siv rau hauv cov txheej txheem kho dej kom tshem tawm cov kab mob phem. Thaum nws ua haujlwm rau lub hom phiaj tseem ceeb hauv kev tswj xyuas dej nyab xeeb, muaj cov tshuaj chlorine hauv cov dej pub tuaj yeem ua rau muaj kev cuam tshuam tsis zoo rau Industrial Reverse Osmosis (RO) System. Raws li tus neeg muag khoom ntawmIndustrial Reverse Osmosis System, peb nkag siab qhov tseem ceeb ntawm kev tshem tawm cov tshuaj chlorine kom ntseeg tau tias kev ua haujlwm zoo thiab kev ua haujlwm ntev ntawm RO system. Hauv blog no, peb yuav tshawb txog ntau txoj hauv kev tshem cov tshuaj chlorine los ntawm cov dej pub rau cov tshuab RO.
Vim li cas thiaj tshem cov chlorine ntawm cov dej pub?
Chlorine, tshwj xeeb tshaj yog dawb chlorine (Cl₂, HOCl, thiab OCl⁻), yog ib tug muaj zog oxidizing tus neeg sawv cev. Thaum nws los rau hauv kev sib cuag nrog nyias - zaj duab xis composite (TFC) daim nyias nyias uas siv nyob rau hauv industrial RO systems, nws yuav ua rau irreversible kev puas tsuaj. Chlorine reacts nrog polyamide txheej ntawm TFC daim nyias nyias, rhuav tshem nws cov qauv tshuaj. Qhov no ua rau muaj kev nce ntxiv ntawm daim nyias nyias permeability, poob ntawm cov ntsev tsis lees paub lub peev xwm, thiab thaum kawg, qhov poob ntawm tag nrho cov kev ua tau zoo ntawm RO system.
Ntxiv mus, muaj cov tshuaj chlorine tuaj yeem ua rau tsim cov biofilms ntawm daim nyias nyias. Cov biofilms no tuaj yeem ua qhov chaw yug me nyuam rau cov kab mob thiab lwm yam kab mob, ntxiv kom txo tau qhov kev ua haujlwm ntawm lub cev thiab ua kom cov zaus ntawm cov membrane tu thiab hloov.
Kev tshem tawm cov tshuaj chlorine
1. Activated Carbon Lim
Cov pa roj carbon activated yog ib txoj hauv kev siv los tshem cov chlorine los ntawm cov dej pub. Nws ua haujlwm los ntawm cov txheej txheem hu ua adsorption, qhov twg chlorine molecules adhere rau saum npoo ntawm cov pa roj carbon activated. Qhov loj ntawm thaj chaw ntawm cov pa roj carbon activated muab ntau qhov chaw rau chlorine adsorption, ua rau nws muaj txiaj ntsig zoo thiab muaj txiaj ntsig zoo.
Nws ua haujlwm li cas:
Thaum cov dej dhau los ntawm cov lim dej lim dej, cov chlorine molecules hauv cov dej tau nyiam mus rau qhov ntxeem tau ntawm cov pa roj carbon. Tom qab ntawd cov tshuaj chlorine reacts nrog cov pa roj carbon monoxide thiab hloov mus rau chloride ions, uas tom qab ntawd tshem tawm ntawm dej.
Qhov ua tau zoo ntawm cov pa roj carbon activated yog nyob ntawm ntau yam, nrog rau lub sijhawm sib cuag ntawm cov dej thiab cov pa roj carbon, qhov zoo thiab hom activated carbon siv, thiab cov dej ntws.
Qhov zoo:
Nws yog ib qho yooj yim thiab tus nqi - txoj kev siv tau zoo.
Muaj peev xwm tshem tawm lwm cov organic tebchaw thiab qee cov hlau hnyav ntxiv rau cov tshuaj chlorine.
Tsawg - txij nkawm thiab yooj yim rau nruab.
Qhov tsis zoo:
Cov pa roj carbon activated muaj lub peev xwm tsawg rau chlorine adsorption. Thaum nws ncav cuag nws qhov saturation, nws yuav tsum tau hloov.
Yog tias cov dej muaj cov av qis lossis lwm yam kab mob, nws tuaj yeem txhaws cov lim dej, txo nws txoj kev ua haujlwm.
2. Tshuaj Dechlorination
Cov tshuaj dechlorination suav nrog kev siv tshuaj los ua cov tshuaj chlorine thiab neutralize nws. Ob hom tshuaj siv rau lub hom phiaj no yog sodium bisulfite (NaHSO₃) thiab sodium metabisulfite (Na₂S₂O₅).
Nws ua haujlwm li cas:
- Cov tshuaj tiv thaiv ntawm sodium bisulfite los yog sodium metabisulfite thiab chlorine yog raws li nram no:
- Rau sodium bisulfite: NaHSO₃ + HOCl → NaHSO₄ + HCl
- Rau sodium metabisulfite: Na₂S₂O₅ + 2HOCl + H₂O → 2NaHSO₄+ 2HCl
- Cov tshuaj no feem ntau yog ntxiv rau cov dej pub rau ntawm RO system siv lub twj tso kua mis tshuaj. Qhov ntau npaum ntawm cov tshuaj yog ua tib zoo tswj raws li cov tshuaj chlorine concentration hauv cov dej pub.
Qhov zoo:
- Nws tuaj yeem muab cov tshuaj chlorine tshem tawm sai thiab ua tiav.
- Yuav ua tau yooj yim automated, tso cai rau kev tswj cov txheej txheem dechlorination.
- Haum rau cov tshuab uas muaj cov tshuaj chlorine siab.
Qhov tsis zoo:
- Yuav tsum muaj cov tshuaj ntxiv, uas ua rau cov nqi khiav lag luam nce ntxiv.
- Cov tshuaj tiv thaiv los ntawm - cov khoom lag luam (xws li sulfates) tuaj yeem ua rau muaj peev xwm ua rau RO system yog tias tsis tswj xyuas kom zoo.
- Kev siv tshuaj tsis raug tuaj yeem ua rau ntau dua - lossis qis dua - dechlorination.
3. Ultrafiltration lossis Microfiltration
Thaum ultrafiltration (UF) thiab microfiltration (MF) feem ntau yog siv rau kev tshem tawm cov khoom loj, tshem tawm cov khib nyiab, thiab qee cov kab mob, lawv tuaj yeem ua lub luag haujlwm hauv kev tshem tawm cov tshuaj chlorine. Txawm hais tias cov txheej txheem no tsis ncaj qha tshem tawm cov tshuaj chlorine, lawv tuaj yeem tshem tawm cov tshuaj chlorine - cov kab mob tiv thaiv kab mob thiab cov organic teeb meem uas yuav hnov mob nrog cov tshuaj chlorine los tsim teeb meem los ntawm - cov khoom.
Nws ua haujlwm li cas:
- UF daim nyias nyias muaj qhov pore loj nyob rau hauv thaj tsam ntawm 0.001 - 0.1 micrometers, thaum MF daim nyias nyias muaj qhov pore loj nyob rau hauv thaj tsam ntawm 0.1 - 10 micrometers. Thaum dej dhau los ntawm cov membranes, cov khoom loj thiab cov kab mob tau khaws cia, tiv thaiv lawv los ntawm cov tshuaj chlorine hauv cov dej ntws qis RO.
Qhov zoo:
- Yuav txhim kho tag nrho cov dej zoo los ntawm kev tshem tawm cov khoom thiab cov kab mob.
- tuaj yeem txo qhov tsim ntawm biofilms hauv RO system.
- Nws muaj lub neej ua haujlwm ntev thiab kev saib xyuas tsis zoo.
Qhov tsis zoo:
- Tsis ncaj qha tshem tawm cov tshuaj chlorine, yog li cov txheej txheem dechlorination ntxiv tseem yuav xav tau.
- Cov daim nyias nyias tuaj yeem ua rau fouling, uas yuav tsum tau ntxuav thiab hloov pauv.
Kev txiav txim siab thaum xaiv ib txoj kev tshem tawm cov tshuaj chlorine
- Chlorine concentration: Qib ntawm chlorine hauv cov dej pub yog qhov tseem ceeb. Cov tshuaj chlorine ntau yuav xav tau kev tshem tawm nruj dua, xws li tshuaj dechlorination.
- Dej Zoo: Lwm yam khoom tsis huv hauv dej, xws li sediment, organic teeb meem, thiab cov hlau hnyav, tuaj yeem cuam tshuam rau kev ua haujlwm ntawm txoj kev tshem tawm cov tshuaj chlorine. Piv txwv li, yog tias cov dej muaj cov dej khib nyiab siab, ua ntej - pom yuav tsim nyog ua ntej siv cov pa roj carbon activated.
- System Capacity: Qhov loj thiab muaj peev xwm ntawm kev lag luam RO system kuj ua lub luag haujlwm. Cov tshuab loj dua tuaj yeem xav tau ntau txoj hauv kev thiab ua kom muaj txiaj ntsig dechlorination kom ntseeg tau tias kev ua haujlwm zoo ib yam.
- Tus Nqi Ua Haujlwm: Cov txheej txheem sib txawv muaj cov nqi khiav lag luam sib txawv, suav nrog tus nqi ntawm cov khoom siv, tshuaj, thiab kev saib xyuas. Nws yog ib qho tseem ceeb uas yuav tau xav txog qhov ntev - cov nqi cuam tshuam thaum xaiv ib txoj kev.
Xaus
Tshem tawm cov tshuaj chlorine los ntawm cov dej pub mis yog qhov tseem ceeb rau kev ua haujlwm kom zoo thiab kev ua haujlwm ntev ntawm Industrial Reverse Osmosis System. Raws li tus neeg muag khoom ntawmIndustrial RO Water Treatment PlantthiabRO cog rau kev siv, peb tau cog lus los muab peb cov neeg siv khoom nrog cov kev daws teeb meem zoo tshaj plaws rau kev tshem tawm cov tshuaj chlorine. Txawm hais tias koj xaiv activated carbon filtration, tshuaj dechlorination, los yog kev sib xyaw ua ke, nws yog ib qho tseem ceeb kom ua tib zoo ntsuas koj cov kev xav tau tshwj xeeb thiab cov kev xav tau.
Yog tias koj nyob hauv kev ua lag luam rau Industrial Reverse Osmosis System lossis xav tau cov lus qhia txog kev tshem tawm cov tshuaj chlorine rau koj qhov system uas twb muaj lawm, peb xav kom kojtiv tauj peblos tham txog koj cov kev xaiv. Peb pab pawg kws tshaj lij tau npaj los pab koj xaiv cov kev daws teeb meem zoo tshaj plaws rau koj cov kev xav tau kev kho dej.