Ozone disinfection thev naus laus zis rau kev kho dej hauv pas dej da dej
Dec 17, 2022
Ozone disinfection thev naus laus zis rau kev kho dej hauv pas dej da dej
Vim tias muaj zog oxidation nyhuv ntawm ozone, nws tuaj yeem decompose organics ntawm cov tshuaj tiv thaiv 100 npaug ntau dua li cov tshuaj chlorine, uas tuaj yeem tiv thaiv cov tshuaj chlorine los ntawm kev sib txuas nrog urea los tsim cov tshuaj chlorine. Nyob rau tib lub sijhawm, nws tuaj yeem oxidize lub precursor ntawm THM, yog li txo THM zoo heev. Hydroxyl tsim nyob rau hauv dej tom qab ozone decomposition tuaj yeem hydrolyze multivalent hlau ions rau hauv colloidal tebchaw, uas tuaj yeem lim tawm los ntawm cov xuab zeb lim, tsis tsuas yog txhim kho kev nkag siab ntawm dej, tab sis kuj tshem tawm cov organics decomposed los ntawm oxidation hauv dej.
Piv nrog rau txoj kev tshuaj tua kab mob chlorine, cov dej zoo thiab qhov chaw ib puag ncig tau zoo dua tom qab siv tshuab ozone rau kev kho dej ntawm cov pas dej da dej:
(1) Ozone thiab nws cov khoom lag luam theem nrab (xws li hydroxyl) muaj cov kab mob bactericidal thiab cov kab mob uas muaj zog tshaj plaws, uas tuaj yeem tiv thaiv kev kis kab mob. Qhov kev sim ua pov thawj tias cov txiaj ntsig ntawm ozone nrog tib lub zog ntawm kev tua kab mob thiab kab mob yog 600-3000 npaug ntawm cov tshuaj chlorine. Thaum ozone concentration yog 1mg / L, nws tsuas yog siv sijhawm 5 vib nas this los ua kom tsis muaj quav Escherichia coli, thiab nws yuav siv li 15000 vib nas this los siv cov tshuaj chlorine nrog tib qhov concentration.
(2) Nws yog ib qho kev lees paub thoob ntiaj teb ib puag ncig-phooj ywg ntsuab bactericide thiab yuav tsis ua rau muaj kuab paug rau ib puag ncig.
(3) Thaum cov tshuaj chlorine siv rau kev tua kab mob, chlorinated organic compounds thiab chlorine thiab lwm cov pa roj carbon monoxide evaporated los ntawm cov dej tau sib sau ua ke saum lub pas dej da dej thiab tsis yooj yim tawg, ua rau tib neeg lub cev ua pa thiab ua rau tib neeg noj qab haus huv, thaum ozone yuav tsis ua rau muaj teeb meem li ntawd.
(4) Ozone tuaj yeem decompose humus zoo hauv dej, oxidize hlau thiab manganese ions hauv dej, thiab decompose cov kab mob me me tawg lub teeb hauv dej, yog li txhim kho qhov pom tseeb ntawm dej thiab ua rau nws zoo nkauj xiav, thaum cov tshuaj chlorine tsis muaj txiaj ntsig zoo. Txhawm rau ua kom cov dej xiav, lub pas dej da dej uas siv cov tshuaj chlorine feem ntau yuav tsum tau ntxiv tooj liab sulfate, uas yog qhov tsis zoo rau tib neeg.
(5) Tom qab ntxiv cov tshuaj chlorine, nws yuav ua rau muaj kev hloov pauv ntawm pH tus nqi ntawm cov dej, ua rau tib neeg tsis xis nyob, yog li cov tshuaj alkaline lossis acidic yuav tsum tau ntxiv rau qhov tsis zoo. Ozone yog cov khoom nruab nrab, uas yuav tsis ua rau muaj teeb meem zoo li no.
(6) Kev siv lub tshuab hluav taws xob ozone tuaj yeem txo qhov kev tswj hwm thiab kev ua haujlwm nyuaj ntawm cov txheej txheem kho dej, thiab muaj kev nyab xeeb siab. Kev npaj tshuaj chlorine yog qhov txaus ntshai hauv kev thauj mus los, khaws cia thiab siv.
(7) Ozone tuaj yeem decompose organic teeb meem hauv dej thiab muaj cov nyhuv micro flocculation, yog li nyob rau hauv ib txwm neeg nrog caij, flocculant tsis tuaj yeem siv.
(8) Raws li qee qhov kev siv, nws tsis tas yuav ntxiv tshuaj tua kab mob chlorine, flocculant thiab pH regulator, thiab ozone tuaj yeem siv los ua tus neeg sawv cev kho mob nkaus xwb.
