Ultrafiltration (UF) cov ntaub nyias nyias, nrog lawv cov kev sib cais zoo nkauj (0.001-0.1 μm), tau siv ntau yam kev haus dej haus cawv thiab kev kho dej kom huv. Txawm li cas los xij, ntuj organic muaj teeb meem (NOM), cov protein, polysacchaules zoo li nyob rau ntawm daim nyias nyias thiab lwm yam, ua rau cov pa flux poob thiab muaj ntau dua transmembrance siab (tmp). Qhov kev ua yeeb yam no tseem ceeb tshaj plaws tseem ceeb ntawm lub cev tseem ceeb uas txwv kev ua haujlwm ruaj khov ntawm UF Technology. Cov tswv yim zoo xws li tom qab ntxuav, thiab kev tu cev, kom huv si, thiab kev siv sijhawm luv nqi siv tau feem ntau tsis zam. Raws li qhov tshwm sim, tshawb txog kev siv hluav taws xob tshiab txoj kev txhawb nqa kom txo UF fouling tau dhau los ua cov kev tshawb fawb hotspot hauv kev kawm thiab kev lag luam.
Daim ntawv thov ntawm huab cua microbubbles (MBS) muaj kev cog lus tshiab rau fouling inhibition nyob rau UF WHFBranes. With diameters typically in the micrometer range, MBs can be uniformly dispersed in water, generating turbulence and interfacial effects that provide unique advantages in membrane processes. Cov kev tshawb fawb tau pom tias MBS qhia txog kev sib cav sib ceg tuaj yeem txo qis kev sib cav sib ceg
Firstly, MBs tau siv sijhawm ua fouling inhibition nyhuv los ntawmKev Txom Nyem thiab Kev Lag Luam Rho TawmCov. Ib zaug qhia rau hauv UF system, MBS ua yeeb yam me me "separators," dispersing fouldic thiab ua rau lawv muaj zog ua rau lawv sib cuam tshuam. Cov organic muaj teeb meem uas yuav txwv tsis pub sib sau ua ke ua cov kab mob uas tau muab faib rau hauv qab ntawm MBS. Qhov kev sib cais no tsis yog txo qis qhov ua kom muaj kev sib tw ntawm lub ncuav mog qab hau Cov kev sim tau pom tias muaj MBS tuaj yeem ua cim cia kom txo cov viscosity ntawm kev txhim kho flux ua tau zoo.
Thib ob, MBS TauHloov cov kev sib cuam tshuam ntawm cov orgics thiab daim nyias nyiasCov. Humic acid (ha), ib qho tseem ceeb ntawm cov organic fouling hauv UF WHF WHRBRANES, yog cuam tshuam tshwj xeeb. Mbs txuas rau haplles hauv kev daws, hloov lawv ζ- Tej zaum muab kev faib tawm thiab txo cov kev sib tw ntawm cov khoom kom sib sau ua ke. Qhov no txhais tau tias MBS zoo tiv thaiv kev tsim cov txheej txheem organic nyob rau ntawm daim nyias nyias. Cov kev tshawb fawb qhia tau hais tias nyob rau hauv UF cov kev sim nrog ha-}}} txaus siab} kev txhim kho ntawm kev txhim kho kom ncav cuag li 139%. Qhov tseem ceeb no lub luag haujlwm tseem ceeb ntawm MBS hauv kev tswj hwm cov organic fouling.
Thib peb, MBS Tus Cwj Pwm ZooTMP thiab Flux muaj peev xwmCov. Raws li kev ua haujlwm UF ua haujlwm, flux tau poob qis thaum TMP nce nrog kev siv ntev. Nrog MBS, txawm li cas los xij, cov xoob xoob txheej txheej txheej txheej thiab cov nplaum uas tsis muaj zog qeeb qeeb thiab ci tau TMP nce ntxiv. Cov nyhuv no txuas ntxiv lub sijhawm ua haujlwm zoo ntawm daim nyias nyias thiab txo qhov xav tau kev tu ncua sijhawm thiab downtime.
Tsis tas li ntawd, MBS muabZog - txuag thiab txuag cov txiaj ntsigCov. Los ntawm kev ua kom tiav kev zam, MBS txo cov zaus ntawm backwashing thiab tshuaj ntxuav tshuaj, yog li tshuaj lom neeg thiab txo qis cov nqi thiab ib puag ncig lub nra. Ntxiv mus, txo kev cia siab rau cov neeg sawv cev ua kom huv cov neeg siv tshuaj, pab kom txuas ntxiv rau cov khoom siv membrane, txuas ntxiv txo cov nuj nqis ntev- hloov cov nuj nqis.
Nws yog tsim nyog sau cia tias qhov ua tau zoo ntawm MBS hauv fouling inhibition yog cuam tshuam los ntawm ntau yam tsis ua haujlwm. Piv txwv li, siv cov khoom lag luam hauv qab ntsev cuam tshuam rau MB kev ua tau zoo. Cov kev tshawb fawb tau pom tias thaum lub ph yuav nyob ze rau nruab nrab (nyob ib ncig ntawm 6), mbs ua rau muaj zog tshaj plaws tiv thaiv ha fouling. Qhov no yog vim Ha molecules pom tau cov nyiaj uas feem ntau txaus siab rau MB adsorption thiab dispersion raws li cov xwm txheej no. Lwm yam xws li MB concentration, npuas loj, tso dej kub, thiab lub siab kuj tseem ua haujlwm tseem ceeb. Feem ntau, qhov kub qis dua thiab siab, ntsuas MB nruab nrab, thiab siab dua MBflow tus nqi yog tau txais txiaj ntsig zoo rau kev ua haujlwm siab.
Saib tom ntej, MBS tuav lub peev xwm tseem ceeb rau UF fouling tswj. Ntawm ib sab tes, sib txuas nrog cov tshuab tshuaj xyuas online tuaj yeem tso cai rau kev kho mob flux thiab TMP meej thiab yoog raws kev tiv thaiv. On the other hand, MBs could be integrated with adsorbent particles, eco-friendly chemical additives, or hybrid treatment strategies to form a "physical + chemical + material" multi-mechanism fouling control system, further enhancing performance. Ib qho ntxiv, kev tshawb fawb yav tom ntej yuav tsum hais txog qhov ntev- lub sijhawm muaj kev ruaj ntseg ntawm kev nyab xeeb thiab kev ntseeg tau nyob rau hauv loj {9} teev cov ntawv thov.
Hauv cov ntsiab lus xaus, MBS nyob rau hauv UF MRBRANES zoo ua rau los ntawm ntuj organic teeb meem thiab lwm yam macromolecules los ntawm kev faib tawm, thiab kev muaj mob los cuam tshuam. Lawv maj mam qeeb qeeb flux poob thiab ruaj khov TMP. Nrog lawv cov ntsuab thiab qis {- lub zog kev loj hlob ntawm cov dej kev kho mob thev naus laus zis thiab muab kev txhawb nqa muaj zog rau kev saws me nyuam. Raws li cov thev naus laus zis paub thiab cov tswv yim ua haujlwm nthuav dav, MBS yuav dhau los ua kev tswj hwm kev ua haujlwm, xa ntau dua cov kev daws teeb meem rau kev ua haujlwm kho kom muaj dej.
