Txawm hais tias ua tau zoo ntawm kev nyiam huv hauv cov dej nyob rau xyoo tsis ntev los no, dej tsis huv tseem ua rau ntau lab tus kabmob txhua xyoo. Feem ntau ntawm cov kab mob no yog tshwm sim los ntawm cov kab mob nkag mus, thiab cov hau kev ua kom dej zoo tuaj yeem pab tiv thaiv kev tsis xis nyob thiab txawm tias muaj sia. Kev tshawb nrhiav tshiab los ntawm University of Eastern Finland qhia tau hais tias kev sib tov tshuaj tua kab mob sib xyaw ua ke nrog cov tshuaj chlorine thiab UV hluav taws xob tuaj yeem ua haujlwm tau zoo rau cov tshuaj tua kab mob.
Txoj kev tshawb no cais cov coliphages sib txawv los ntawm cov kho cov dej hauv lub nroog. Tus kab mob Coliphages yog cov kab mob uas kis tau tus kab mob E.coli, thiab lawv tuaj yeem siv los ua qauv qauv rau tib neeg cov kab mob nkag rau hauv kev tshawb nrhiav tshuaj ntxuav kab mob. Yuav luag ib nrab ntawm cov coliphages cais tau zoo tiv thaiv chlorine lossis UV hluav taws xob, thiab vim li no tsis yog chlorine thiab UV hluav taws xob ib leeg ua tau zoo rau tag nrho cov coliphages.
& quot; Nov yog qhov tseem ceeb ntawm kev sib koom ua ke," hais tias Cov Kws Kho Mob Me Nyuam Kawm Ntawv Alyaa Zyara, MSc, los ntawm University of Eastern Finland, uas tau hais tawm qhov kev tshwm sim hauv nws cov lus qhuab qhia.
Thaum coliphages thawj zaug raug cov tshuaj chlorine tsis txaus (0.1 lossis 0.5 mg Cl / L) rau 10 feeb ua raws li UV hluav taws xob qis (tsuas yog 22 mWs / cm2), ntau dua 99.9% ntawm tag nrho cov coliphages kawm tau ua tsis tiav. Txawm li cas los xij, thaum qhov kev txiav txim ntawm kev kho tau rov qab (UV ua ntej, chlorine thib ob), kev ua kom tsis huv yog qhov tsawg dua.
& quot; Nws yog qhov zoo dua los siv thawj zaug kev siv tshuaj tsawg tsawg tom qab cov tshuaj tua hluav taws xob tsawg tsawg ntawm UV hluav taws xob ntau dua li siv cov chlorine siab lossis UV ntau dua ib leeg. Qhov kev txiav txim ntawm kev kho kuj tseem ceeb: siv UV hluav taws xob ua ntej thiab chlorine thib ob tau txais txiaj ntsig tsawg. Hauv lwm lo lus, kev kho mob sib xyaw ua ke siv cov tshuaj chlorine ua ntej thiab UV thib ob tuaj yeem pom zoo ua cov tshuaj tua kab mob rau cov kab mob."
Txoj kev tshawb no tseem sim tshiab UV-LED thev naus laus zis, raws li UV-LEDs yog ib txoj kev tshiab rau kev ua kom tsis huv ntawm cov dej haus. Txoj kev tshawb no siv UV-LEDs ua haujlwm ntawm nthwv dej ntawm 270 nm thiab nrog lub zog 120 mW tiv thaiv tsis tau, uas tsis muaj' t tau siv rau hauv kev tshawb nrhiav kev tua kab mob ua ntej. Raws li tsawg li 2 feeb ntawm kev kho mob UV-LED no txaus los ua kom muaj 90-99.9% kev txo cov coliphages kuaj hauv qhov ntsuas 5.2-litre. Irradiation lub sijhawm 10 feeb nyob rau hauv tib lub reactor nce kev txo kom txog li 99.99 - 99.999%. Tsoos mercury UV teeb ntawm 254 nm wavelength ua rau zoo sib xws lossis txo qis me ntsis hauv 2 lossis 10 feeb, tab sis cov dej ntim tsuas yog 10 millilitres.
& quot; UV-LEDs yog qhov muaj txiaj ntsig zoo rau kev ua kom dej tsis huv, vim tias lawv siv hluav taws xob tsawg dua li cov tsoos hluav taws xob UV teeb. Tsis tas li ntawd, raws li UV-LED tsis muaj cov tshuaj mercury, lawv nyob nyab xeeb rau ib puag ncig."
Cov kev tshawb pom tau pib pom nyob rau hauv Journal ntawm Dej thiab Kev Noj Qab Haus Huv, thiab dej.
Dab Neeg Tau Los:
Cov Khoom Sivyog muab los ntawmTsev kawm ntawv ntawm Eastern Finland.Ntawm: Cov ntsiab lus yuav raug kho rau hom thiab ntev.
