Reclaimed Water Treatment Technologies: UF, RO, MBR thiab lwm yam kev xaiv

Thaum cov tuam txhab lag luam ua cov dej rov siv dua, lawv feem ntau ncaj qha piv rau ultrafiltration, thim rov qab osmosis, thiab MBR hauv kev cia siab ntawm kev txheeb xyuas qhov "zoo tshaj" thev naus laus zis. Txawm li cas los xij, los ntawm qhov kev xav ntawm kev siv engineering siv tau, txoj hauv kev no tsis yog qhov tseeb.

txawv reclaimed kev kho dejtechnologies daws cov teeb meem sib txawv. Ultrafiltration feem ntau yog lub hom phiaj tshem tawm cov khib nyiab thiab cov colloids, thim rov qab osmosis feem ntau tshem tawm cov ntsev yaj, thaum MBR ua lub luag haujlwm ntau dua hauv kev kho mob lom neeg thiab cov khoom sib cais- kua. Cov technologies no tsis yog ib qho yooj yim lwm txoj kev rau ib leeg. Hauv ntau qhov project, lawv yuav tsum tau muab sib xyaw ua ke raws li cov yam ntxwv ntawm cov dej hauv qhov chaw thiab rov siv lub hom phiaj.

Yog li ntawd, thaum tham txog cov txheej txheem kho dej rov qab rau kev lag luam rov qab siv dua, cov lus nug tseem ceeb dua tsis yog "Lub tshuab twg yog qhov zoo tshaj plaws?" tab sis theej:Dab tsi yuav tsum tau muab tshem tawm ntawm qhov chaw dej, thiab yuav ua li cas cov dej kho thaum kawg yuav rov qab siv dua?

Cov teeb meem dab tsi Reclaimed Water Treatment yuav tsum tau daws?

Cov dej khib nyiab los ntawm ntau qhov chaw ntsib cov teeb meem sib txawv tom qab nkag mus rau kev kho dej rov qab qhov system.Qee qhov dej khib nyiab, txawm tias tom qab kev kho mob ib txwm muaj, feem ntau tseem muaj teeb meem nrog cov khib nyiab pov tseg thiab turbidity. Lwm tus tuaj yeem muaj cov ntsiab lus siab ntawm cov organic thiab xav tau kev kho mob ntxiv. Qee cov dej khib nyiab hauv kev lag luam, txawm tias thaum lawv pom meej meej, tseem yuav muaj cov ntsev yaj ntau ntau, muaj cov khoom siv hluav taws xob siab, lossis muaj cov kab mob tshwj xeeb.Qhov no yog vim li cas tsis muaj ib qho cuab yeej ruaj khov tuaj yeem tsim nyog rau txhua qhov kev lag luam dej rov siv dua.

Los ntawm qhov kev xav ntawm lub hom phiaj kev kho mob, lub kaw lus dej rov qab feem ntau xav tau los daws cov teeb meem dej tsis zoo ntawm ntau qib sib txawv, suav nrog cov khoom loj thiab cov khib nyiab tshem tawm, colloids thiab turbidity, organic pollutants, microorganisms, thiab yaj ntsev thiab lwm yam kab mob.

Txoj hauj lwm ntawm txhua lub tshuab hauv cov txheej txheem kev kho mob feem ntau yog nyob ntawm seb nws muaj peev xwm tshem tau dab tsi, es tsis yog nyob ntawm seb lub tshuab nws tus kheej tau txiav txim siab ntau dua lossis tsawg dua.

UF: Muab cov khoom ruaj khov-Kev sib cais ua kua rau cov dej rov qab

Ntawm ntau yam kev kho dej siv thev naus laus zis, ultrafiltration feem ntau ua tau zoo heev - lub luag haujlwm tau hais tseg. UF tuaj yeem khaws cov khib nyiab pov tseg, colloids, thiab qee yam kab mob. Yog li ntawd, nws yog feem ntau siv nyob rau hauv industrial dej reuse systems los txhim kho effluent stability. Rau cov dej khib nyiab uas twb tau txais kev kho mob lom lossis lwm yam kev kho dej ntws, UF tuaj yeem txo cov turbidity thiab particle cov ntsiab lus ntxiv, ua rau cov dej ruaj khov dua.

Hauv cov txheej txheem kho dej kom rov qab tau tiag tiag, UF tuaj yeem ua haujlwm raws li kev pom zoo ua ntej rov siv dua lossis ua ntej kho rau qhov rov qab osmosis.

Piv txwv li:

Kev kho dej khib nyiab → UF → Disinfection → Rov siv dua

Los yog:

Kev kho dej khib nyiab → UF → RO → Rov siv dua

Tus nqi ntawm UF tsis txwv rau kev txhim kho cov dej ntws zaum kawg. Hauv cov haujlwm uas suav nrog RO raws li cov txheej txheem qis qis, UF tuaj yeem pab txo cov khoom fouling uas nkag mus rau hauv RO system thiab muab cov dej ruaj khov dua rau kev rov qab osmosis.Txawm li cas los xij, nws yuav tsum tau muab sau tseg tias ultrafiltration tsis tuaj yeem txo cov ntsev ntsev ntau.

Yog tias lub tuam txhab kev lag luam rov siv lub hom phiaj cuam tshuam txog kev txo cov conductivity, tag nrho cov yaj yaj, lossis qee yam ions yaj, UF ib leeg feem ntau yuav tsis txaus kom tau raws li cov dej xav tau.

RO: Thaum qhov kev sib tw hloov ntawm cov khoom mus rau cov khoom tawg

Yog tias UF feem ntau hais txog qhov loj dua thiab pom cov khoom hauv dej, RO tsom ntau dua rau cov khoom uas twb yaj lawm hauv nws.

Hauv cov dej hauv kev lag luam rov qab siv dua, thaum cov dej rov qab tau tsim los rau cov ntawv thov nrog cov kev cai nruj dua rau kev coj noj coj ua, ntsev, lossis cov kab mob sib kis, rov qab osmosis feem ntau dhau los ua cov cuab yeej kho mob tseem ceeb. Piv txwv li, qee qhov kev ua haujlwm siab - cov ntawv thov dej ua haujlwm zoo lossis rov siv dua cov haujlwm uas xav tau kev tswj hwm cov ntsev ntxiv tuaj yeem siv:Pretreated Wastewater → UF → RO → Rov siv dua

Qhov kev teeb tsa no tsis siv vim RO yog "ntau dua" dua li UF, tab sis vim tias ob lub thev naus laus zis daws teeb meem sib txawv.UF txo qhov ntim ntawm cov khoom, colloids, thiab qee yam kab mob, thaum RO ntxiv txo cov ntsev yaj thiab lwm yam khoom paug.

Tau kawg, RO tsis haum rau txhua qhov project. RO ua haujlwm nyob rau hauv siab thiab tuaj yeem tsim kom muaj cov kwj deg. Yog li ntawd, kev siv hluav taws xob, membrane fouling, thiab kev tswj hwm kev mloog zoo yog txhua yam tseem ceeb uas yuav tsum tau xav txog thaum tsim lub cev. Yog tias daim ntawv thov rov siv dua tsis tas yuav txo ntsev, ntxiv RO tsuas yog kom tau txais "cov dej huv" tuaj yeem ua rau cov peev thiab cov nqi khiav haujlwm ntawm tag nrho cov dej khib nyiab rov ua dua.

Yog li ntawd, tus nqi ntawm RO tsis nyob rau hauv lub tswv yim hais tias "txhua qhov project yuav tsum siv nws," tab sis, theej nyob rau hauv nws tsim nyog rau daim ntawv thov uas tiag tiag yuav tsum tau advanced desalination.

MBR: Kev sib xyaw tshuaj lom neeg thiab kev sib cais ntawm daim nyias nyias

Lub luag haujlwm ntawm MBR hauv kev kho dej rov qab txawv ntawm UF thiab RO. Cov yam ntxwv tseem ceeb ntawm MBR yog kev koom ua ke ntawm kev kho mob lom neeg thiab kev sib cais ntawm daim nyias nyias. Nws tsis tsuas yog ua tau zoo- kua sib cais tab sis kuj tseem ua rau muaj kev puas tsuaj ntawm cov pa phem, ua rau nws muaj kev sib raug zoo nrog rau theem tseem ceeb ntawm kev kho dej khib nyiab tag nrho.

Hauv cov txheej txheem ib txwm muaj, cov dej khib nyiab feem ntau yuav tsum tau ua kom cov av qis rau cov khoom sib cais -kua dej tom qab kev kho mob lom. MBR, txawm li cas los xij, siv cov txheej txheem membrane kom ua tiav cov khoom sib cais - kua sib cais thiab tuaj yeem tsim cov effluent ruaj khov.

Ib qho txheej txheem ib txwm tuaj yeem sawv cev raws li:Cov dej khib nyiab → MBR → Advanced Treatment → Rov siv dua

Rau qee qhov kev lag luam, dej kho los ntawm MBR tuaj yeem ua tau raws li qee qhov kev xav tau rov qab siv dua. Txawm li cas los xij, yog tias daim ntawv thov zaum kawg yuav tsum tau txo qis ntxiv ntawm cov ntsev yaj lossis cov khoom siv hluav taws xob, cov kev kho mob siab heev xws li RO tseem yuav tsum tau qis qis ntawm MBR.

Qhov no kuj piav qhia vim li cas MBR vs UF rau kev siv dej tsis tuaj yeem nkag siab yooj yim raws li kev xaiv ntawm ob txoj hauv kev. MBR feem ntau hais txog kev kho cov pa phem hauv cov organic thiab cov khoom sib cais- cov kua dej sib cais hauv cov txheej txheem kev kho mob lom neeg, thaum UF feem ntau siv rau kev lim dej ntxiv lossis ua ib qho kev tiv thaiv pretreatment unit rau downstream membrane systems. Txawm hais tias lawv cov dej num tuaj yeem sib tshooj hauv qee qhov haujlwm, lawv tuaj yeem ua haujlwm sib txawv hauv ntau txoj haujlwm kho dej rov qab.

Qhov txawv ntawm UF, RO, thiab MBR yog dab tsi?

Qhov sib txawv ntawm peb lub thev naus laus zis ua kom pom tseeb dua thaum lawv raug txiav txim siab hauv tib txoj haujlwm.

Yog li ntawd, thaum nrhiav tuszoo tshaj plaws reclaimed dej kho tshuab, cov lus teb feem ntau tsis yog UF, RO, lossis MBR.

Cov lus teb ntau dua yog:Kev sib xyaw ua ke ntawm cov thev naus laus zis uas tuaj yeem ua tau raws li lub hom phiaj dej zoo thaum hloov mus rau cov yam ntxwv ntawm cov dej thiab lub sijhawm ua haujlwm ntev - tej zaum yuav yog qhov kev daws teeb meem zoo tshaj plaws.

Lwm yam kev xaiv twg muaj dua li UF, RO, thiab MBR?

Kev ua kom tiav cov dej kho dej tsis tu ncua feem ntau tsuas yog tso siab rau peb cov txheej txheem membrane no xwb. Rau cov dej khib nyiab uas muaj cov khoom loj loj, cov qauv kev pom zoo xws li xuab zeb pom thiab kev pom ntau yam tseem tuaj yeem ua lub luag haujlwm tseem ceeb. Cov txheej txheem no tuaj yeem ua haujlwm ua ntej thiab txo qhov load ntawm cov khoom siv hauv qab.

Rau cov pa phem tshwj xeeb, cov pa roj carbon activated tuaj yeem siv los txhim kho cov dej zoo ntxiv. Qee qhov kev lag luam dej khib nyiab kuj tseem yuav xav tau cov txheej txheem xws li coagulation thiab sedimentation, yaj huab cua flotation, roj- dej sib cais, lossis oxidation siab heev.

Kev tua kab mob kuj yog ib feem tseem ceeb ntawm cov dej rov qab. Nyob ntawm daim ntawv thov zaum kawg thiab qhov yuav tsum tau ua, kev siv tshuaj tua kab mob ultraviolet, chlorination, lossis lwm txoj hauv kev yuav raug siv los tswj cov kab mob microbial.

Yog li ntawd, cov cuab yeej siv dej rov siv dua tiag tiag zoo li lub thawv khoom siv. Cov haujlwm sib txawv xaiv cov chav kho mob tsim nyog los ntawm ntau yam thev naus laus zis no thiab muab lawv ua ke kom tsim nyog los ua kom tiav qhov system.

Qhov tseem ceeb tshaj plaws tsis yog piv cov thev naus laus zis, tab sis nkag siab tias lawv ua haujlwm ua ke li cas

Hauv cov haujlwm engineering tiag tiag, cov lus nug feem ntau tsis yog, "Qhov twg zoo dua: UF, RO, lossis MBR?" tab sis theej, "Yuav ua li cas cov technologies yuav tsum tau ua ke kom tau raws li qhov yuav tsum tau siv dua?"

Rau cov haujlwm uas muaj cov dej yooj yim uas feem ntau xav tau kev tswj xyuas cov khib nyiab pov tseg, ib qho kev teeb tsa ua tau yog:

Kev kho mob lom → UF → Disinfection → Rov siv dua

Rau cov haujlwm uas tsis muaj qhov chaw teeb tsa thiab xav tau kev kho mob ruaj khov, kev teeb tsa ua tau yog:

Cov dej khib nyiab → MBR → Polishing → Rov siv dua

Rau kev lag luam dej rov siv cov dej num uas xav tau kev txo qis ntawm cov ntsev thiab kev ua haujlwm ntxiv, cov txheej txheem yuav yog:

Kev kho dej khib nyiab → UF lossis MBR → RO → Rov siv dua

Qhov sib txawv ntawm cov kev sib txuas thev naus laus zis no tseem ceeb tshwm sim los ntawm ob yam tseem ceeb: qhov dej zoo thiab daim ntawv thov rov siv dua zaum kawg. Cov no kuj yog thawj qhov kev txiav txim siab uas yuav tsum tau qhia meej thaum tsim cov thev naus laus zis kho dej rau kev lag luam rov qab siv dua.

Thaum xaiv cov thev naus laus zis, cov khoom tseem ceeb tshaj li cov cuab yeej yuav tsum tau txiav txim siab

Ua tau raws li qhov yuav tsum tau muaj dej zootsis yog tib qho kev ntsuas rau kev ntsuas qhov system. Kev lag luam tej yaam num kuj yuav tsum tau xav txog seb cov dej hauv qhov chaw muaj kev hloov pauv loj. Piv txwv li,kev hloov hauv cov voj voog ntau lawmTej zaum yuav ua rau muaj kev hloov pauv hauv COD, salinity, lossis roj ntau. Yog tias lub kaw lus tsuas yog tsim los rau cov kev ua haujlwm zoo tshaj plaws, cov teeb meem xws li kev kho mob tsis txaus lossis ua kom nrawm ntawm daim nyias nyias fouling yuav tshwm sim thaum lub sijhawm ua haujlwm.

Muaj qhov chaw nruabkuj tuaj yeem cuam tshuam cov txheej txheem xaiv. Thaum qee lub tuam txhab hloov kho cov chaw kho dej khib nyiab uas twb muaj lawm, thaj av thiab qhov chaw teeb tsa yuav raug txwv, ua kom cov txheej txheem compactness yog qhov tseem ceeb. Rau cov haujlwm uas siv RO,concentrate tswjyuav tsum tsis txhob saib tsis taus. Rau cov txheej txheem membrane,kev tu ntau zaus, kev siv tshuaj lom neeg, thiab kev tu lub sijhawm ntev -kuj yuav tsum tau coj mus rau hauv tus account.

Yog li, kev xaiv thev naus laus zis yog qhov tseem ceeb ntawm kev nrhiav kev sib npaug ntawm cov hom phiaj dej zoo, qhov system stability, cov nqi khiav lag luam, thiab qhov chaw nyob. Ib qho system uas muaj peev xwm theoretically tsim cov dej zoo tshaj plaws tsis yog qhov kev lag luam tshaj plawsCov dej khib nyiab rov ua dua qhov systemrau qhov project tiag.

Xaus: Tsis muaj ib qho thev naus laus zis tsim nyog rau txhua qhov dej rov qab ua haujlwm

UF, RO, thiab MBR yog txhua yam kev kho mob tseem ceeb hauv kev siv dej siv niaj hnub no, tab sis lawv tsis yog kev sib tw yooj yim.UF yog qhov zoo rau kev hais txog cov khib nyiab thiab cov colloids, RO yog siv los txo cov ntsev yaj ntxiv, thaumMBR muab kev kho mob lom neeg thiab kev sib cais ntawm daim nyias nyias, muab kev xaiv rau kev kho cov dej khib nyiab nyuaj thiab ua kom cov dej ntws ruaj khov.

Yog li ntawd, thaum npaj areclaimed kev kho dejproject, cov lus nug uas yuav tsum tau teb tiag tiag tsis yog "Lub tshuab twg yog qhov zoo tshaj plaws?" tab sis theej:

Cov kab mob dab tsi muaj nyob hauv cov dej hauv qhov chaw?

Dab tsi ntawm cov dej zoo yuav tsum tau ua rau daim ntawv thov zaum kawg?

Cov chav kho mob twg tuaj yeem ua tau raws li cov kev cai no ntawm tus nqi ua haujlwm tsim nyog?

Thaum cov lus nug no tau raug txhais kom meej, UF, RO, MBR, thiab lwm yam kev siv dej siv thev naus laus zis tuaj yeem ua ke kom tsim nyog los tsim cov kev kho mob kom haum rau qhov project tshwj xeeb.

Rau lub sijhawm ntev -cov dej hauv kev lag luam rov siv dua, qhov no yog li- hu ua qhov zoo tshaj plaws reclaimed water treatment technology tsis yog ib qho khoom siv, tab sis ib qho kev daws teeb meem uas ua tiav qhov tsim nyog sib npaug ntawm cov dej hauv av, cov hom phiaj siv rov qab, kev ruaj ntseg, thiab ntev - cov nqi khiav lag luam.