Niaj hnub no, kuv xav qhia luv luv txog "membrane integrated water treatment technology," uas yog kev sib xyaw ntawm cov txheej txheem kho dej hauv cov txheej txheem membrane xws li microfiltration / MF, ultrafiltration / UF, nanofiltration / NF, thim rov qab osmosis / RO, thiab EDI / electrodeionization.
(1) Dab tsi yog qhov khoom siv ROR?
ROR stands rau Reuse of (Reverse Osmosis) Reject, txhais tau tias yog ib lub cuab yeej rau reusing (rov qab osmosis) concentrate.
Narrow txhais: ROR sib npaug "secondary reverse osmosis."
Raws li kev tso cai (piv txwv li, RO mloog zoo tsis yog qhov tsis zoo), qhov kev mloog zoo tuaj yeem raug "thib ob rov qab osmosis" tom qab softening lossis ntxiv cov tshuaj loj ntawm cov nplai inhibitor kom siv dej ntau tshaj plaws thiab tag nrho cov txheej txheem rov qab.
Kev txhais dav dav: ROR yog hais txog tag nrho cov txheej txheem thiab cov thev naus laus zis uas tuaj yeem txhim kho kev siv dag zog.
Hais lus nruj me ntsis, qhov kev mloog zoo ntawm no tsis yog suav nrog RO mloog xwb tab sis tuaj yeem xa mus rau ntau hom kev mloog zoo. Noj RO mloog zoo li piv txwv, vim qhov sib txawv ntawm cov dej tsis zoo thiab pem hauv ntej- cov txheej txheem kho, qhov muaj pes tsawg leeg thiab cov ntsiab lus ntawm RO concentrate tuaj yeem ua ntau dhau. Nyob rau hauv tas li ntawd, tej yam yooj yim pretreatment, softening, los yog tej yam yooj yim tshuaj ntxiv yog tsis txaus kom tau raws li cov dej pub rau "secondary reverse osmosis" (zoo ib yam/brackish/fouling-resistant/roj coil).
Hauv qhov xwm txheej no, cov khoom siv tshwj xeeb xws li lub qhov txhab coil rov qab osmosis (STRO), disc tube rov qab osmosis (DTRO), thiab cyclone disc tube rov qab osmosis (CDRO), nrog rau cov txheej txheem kev kho tus kheej lossis kev sib koom ua ke xws li nanofiltration (NF) ntsev sib cais thiab cov evaporators, tseem tuaj yeem ua tiav cov dej siv rov qab siv cov concentrate.
Nyob rau hauv luv luv: Tshwj tsis yog hais tias lwm yam, ROR sib npaug "secondary reverse osmosis," tsim nyog pretreatment pab yuav tsum tau xaiv thiab configured raws li.
(2) MBR effluent puas tuaj yeem pub ncaj qha rau hauv RO membrane system?
Raws li kev sib xyaw ua ke zoo tshaj plaws ntawm biochemical thiab membrane technology, qhov zoo ntawm MBR yog nyob ntawm cov dej tsis zoo, cov txheej txheem membrane precision, thiab tag nrho kev ua haujlwm ruaj khov ntawm MBR system.
Rau RO systems (feem ntau xa mus rau cov pa dej brackish antifouling kauv qhov txhab daim nyias nyias), feem ntau yuav cuam tshuam ntawm MBR effluent yog siab COD. Qhov no feem ntau yog los ntawm peb yam uas tau hais los saum toj no, thiab kev tshuaj xyuas ze dua qhia txog cov ntsiab lus ntawm cov organic.
Los ntawm qhov kev xav ntawm cov tuam txhab membrane, RO systems muaj kev txwv nruj heev COD (COD < 10 mg / L). Txawm li cas los xij, peb kuj paub tias kev ua raws li qhov yuav tsum tau ua yuav nyuaj heev.
Yog li ntawd, nyob rau hauv kev siv tswv yim, peb feem ntau nyiam cov qauv nyob ib ncig ntawm chav kawm A / B rau cov chaw kho dej khib nyiab.
Tau kawg, kev siv cov qauv no feem ntau xav tau kev txiav txim siab ntxiv ntawm kev txi cov membrane flux, ntau dua tshuaj ntxuav zaus, thiab txo cov membrane lifespan.
Xav txog kev ruaj ntseg ntawm MBR kev ua haujlwm, kev ua tiav ntawm kev tsim qauv, qhov zoo ntawm cov khoom siv membrane, thiab qhov tsis muaj lossis ua tiav qhov tsis ua tiav hauv kev ua haujlwm zoo thiab kev tu lub peev xwm, qhov tshwm sim ntawm cov teeb meem nrog hom MBR + RO txheej txheem no siab heev.
Txawm li cas los xij, tsis zoo li cov txheej txheem Class I RO + EDI (uas feem ntau ua rau muaj teeb meem hauv lub cev vim kev ua haujlwm tsis raug zoo thiab kev saib xyuas), Kuv xav tsis txaus siab pom zoo siv cov txheej txheem Class II RO + EDI ua lwm txoj hauv kev.
Cov txheej txheem MBR + RO feem ntau siv rau hauv cov xwm txheej uas muaj cov dej ntau. Yog tias cov txheej txheem sib txuas ntau dua, xws li tubular ultrafiltration, siv nyob rau nruab nrab, nws yuav ua rau muaj kev nce ntxiv hauv cov cuab yeej cuab tam thiab cov nqi kho mob, yog li kov yeej lub hom phiaj tseem ceeb ntawm MBR txheej txheem.
Yog li ntawd, kuv ib txwm tswj hwm qhov nruab nrab, tos-thiab- pom tus cwj pwm ntawm kev pub mis MBR ncaj qha rau hauv RO system. Yooj yim muab tso, nws yog ib qho tseem ceeb kom paub qhov txawv ntawm cov dej khib nyiab (sib xyaw), txheeb xyuas / kwv yees qhov MBR effluent zoo, thiab khaws qhov chaw tsim nyog thiab pob nyiaj siv rau kev sib txuas cov txheej txheem.
Cov neeg siv khoom thiab cov neeg tsim khoom zoo li ob peb nyob ua ke; ua ntej kev sib koom tes, muaj kev sib nrig sib nro; tom qab kev sib koom tes, yog tias tsis muaj dab tsi tshwm sim, txhua yam sib haum xeeb (tsawg kawg kev thaj yeeb nyab xeeb); tab sis thaum muaj teeb meem tshwm sim, muaj txhua yam kev sib cav.
Hauv luv luv: MBR + RO txheej txheem nws tus kheej zoo; tus yuam sij yog ua tib zoo saib xyuas cov ncauj lus kom ntxaws thiab kev tswj xyuas thaum lub sijhawm ua haujlwm.
Okay, tau tham txog ob qho teeb meem ntxaws ntxaws txog ROR thiab MBR + RO cov txheej txheem, cia peb txuas ntxiv peb cov kev sib tham rau cov ncauj lus dav dav hauv daim ntawv thov siv tshuab membrane hauv thaj chaw kho dej, tshwj xeeb tshaj yog daim ntawv thov daim nyias nyias- cov txheej txheem kho dej.
Raws li kuv tau hais ntau zaus ua ntej, ob lub ntsiab lus tseem ceeb hauv kev kho dej tam sim no yog kev tsim cov dej ultrapure nrog ntau dua purity thiab kev kho cov dej khib nyiab ntau dua (thiab nyuaj). Cov qub yog feem ntau ua piv txwv los ntawm semiconductor- qib ultrapure dej ntau lawm, thaum lub tom kawg yog feem ntau ua piv txwv los ntawm zero -zero paug kev kho mob hauv cov thee tshuaj industries.
Qee cov ntsiab lus ntxiv:
① Cov dej qias neeg: dej khib nyiab, dej khib nyiab hauv nroog, dej phwj hauv tsev, thiab lwm yam; Cov dej hauv ntuj: dej hauv nroog, dej ntws, dej hauv av, thiab lwm yam.
② Hais txog cov txheej txheem kev tso dej ntawm coagulation xuab zeb pom thiab ultrafiltration, rau cov dej ntuj, kuv tus kheej nyiam tib theem; rau cov dej tsis huv, kuv tus kheej nyiam tib theem lossis theem ua ntej / tom qab.
③ Yog tias qhov permeate los ntawm thawj -theem RO ntawm cov dej qias neeg yog siv los tsim cov dej ntshiab huv, kuv tus kheej xav kom nws xa mus rau thawj zaug -theem RO seem ntawm lub kaw lus. Kev xa ncaj qha mus rau qhov thib ob -theem RO seem yuav muab lub nra hnyav rau lub kaw lus (tsuas yog xav txog yam xws li TOC).
④ Kev xaiv tshwj xeeb ntawm daim nyias nyias thiab nanofiltration desalination yuav tsum tau xav txog tag nrho cov kev kho ntim thiab dej zoo, tshwj xeeb tshaj yog ua ke nrog evaporator xaiv thiab cov nqi kho. Cov khoom me me - nplai tsis tas yuav tsum tau ua raws li qhov xav tau ntau dhau; qhov ntev ntawm cov txheej txheem system, cov ntsiab lus muaj feem ntau muaj.
⑤ Tsis muaj dab tsi kiag li; ib txwm tawm hauv chav rau maneuver hauv koj qhov kev ua. Txheeb xyuas cov teeb meem tshwj xeeb, thiab nws ib txwm zoo los ua ntau qhov kev sim thiab sib piv.
