Ib hom tshiab ntawm cov dej tua kab mob ua kom tsis muaj zog hauv kev lag luam dej: ultraviolet (UV) dej tua kab mob uas siv tob-UV teeb-emitting-diodes (LED). UVC-LED dej lim dej tam sim no muaj nyob rau ntawm kev ua lag luam thiab muab cov txiaj ntsig sib xyaw ua ke ntawm ob tus txheej txheem kub; UVC germicidal irradiation thiab LED teeb. Tsab xov xwm no tham txog qhov tseem ceeb ntawm UV-LED thev naus laus zis, nws daim ntawv thov hauv kev kho dej, lub zeem muag rau lawv cov kev sib raug zoo thiab ib puag ncig, lawv cov ntawv thov tam sim no thiab yav tom ntej thiab dab tsi yuav tsum saib xyuas thaum xav txog UV-LED dej lim cov khoom lag luam.
UVC-LEDs, feem ntau hu ua qhov sib sib zog nqus-UV-LEDs, lossis tsuas yog kis tus kab mob UV-LED, yog cov teeb liab zoo li cov LED uas hloov halogen thiab incandescent lub teeb ua haujlwm hauv kev lag luam teeb pom kev zoo tab sis uas ua rau luv luv thiab tsis yoj ntawm lub teeb hauv qhov 250 nm rau 280 nm khwv. UV-LED yog qhov tsim muaj uas tsuas yog xyoo tsis ntev dhau los ua neeg muaj zog txaus ua rau cov dej tsis haum rau cov dej ntws tawm mus. Tam sim no lawv siv los tsim cov kev daws teeb meem kev ua kom pom kev tsis raug dej (POU). Ntau cov kev tshawb fawb thiab kev tsim kho tau mus rau hauv kev tsim cov cuab yeej UV-LED dej tsis huv, thiab nws tau pom meej tias txawm tias cov lus qhia feeb hauv kev tsim cov cuab yeej no tuaj yeem ua qhov tseem ceeb xws li lub zog los ntawm UV-LED nws tus kheej. Ib qhov ua tau zoo thiab pheej yig UV-LED dej pom cov dej tsis huv tam sim no yog cov khoom lag luam ntawm qee lub tuam txhab, txhua tus thov lawv tus kheej cov tswv yim yuav ua li cas siv UV-LED zoo tshaj. Cov cuab yeej siv dej tua kab mob UV-LED tam sim no yog qhov zoo tshaj plaws rau cov ntawv thov POU, uas yog xov xwm zoo rau cov neeg siv khoom lag luam thoob plaws ntiaj teb thiab rau cov khoom siv khoom lag luam kev lag luam, uas tsis muaj qhov yooj yim thiab eco-kev daws teeb meem rau microbial pathogen paug hauv dej haus.
Dej Txheeb Xyuas Kev Txawj Ntse& Cov txiaj ntsig ib puag ncig
Ntau lab ntawm POUwater purification systems thiab ntau lab tus dej fwj muag txhua lub hlis. Cov khoom no ua rau muaj kev daws teeb meem vim tias lawv tsis tshua muaj nqi thiab yooj yim. Cov taub ntim dej ib sab, POU lub tshuab lim dej ua ib qho kev daws teeb meem zoo rau ntau cov dej tsis huv thiab tuaj yeem tso siab tau los ua kom cov dej haus huv hauv ntau qhov xwm txheej. Kev siv lub cev thiab tshuaj lom neeg xws li cov khoom siv thawm, cov hlau hnyav thiab cov khoom lag luam tsim tawm tuaj yeem tshem tawm hauv dej los ntawm ntau cov tshuab lim thiab ion pauv cov thev naus laus zis, tab sis cov kab mob sib kis me me ua rau muaj kev sib tw tshwj xeeb. Kev ntsuas tus nqi siv tshuab tsis yog feem ntau ntsuas rau cov kab mob thiab kis kab mob, yog li tshuaj lom neeg; sub micron me me; thiab cov mercury-roj raws li UV cov teeb ci feem ntau siv rau kev kho mob ntawm cov kab mob pathogens. Txhua qhov ntawm cov kev rho tawm dej muaj lawv tus kheej qhov dej tsis zoo uas tuaj yeem daws tau los ntawm UV-LED dej es ua kom pom.
Los ntawm cov cuab yeej siv tshuaj tua kab mob sib txawv, kev siv tshuaj ntxuav dej yog siv dav dav. Thaum siv kom zoo, cov txiaj ntsig ntawm kev siv tshuaj kho mob tsis pom zoo, tab sis lawv cov qhov tsis zoo, zoo li lub peev xwm rau kev noj ntau dhau yog tias tsis siv tshuaj kom zoo; tus neeg siv khoom sib txawv txais ntawm thaj chaw thiab kev lag luam; thiab cov tshuaj lom neeg tsis tseem ceeb ntawm qee cov kab mob xws li Legionella, Cryptosporidium, Giardia, thiabCyclospora, tau ntxiv kev txhim kho ntawm lwm txoj kev kho dej. Cov qauv tsim tshwj xeeb sub-micron thiab thim rov qab osmosis (RO) cov qog ua rau muaj kev tiv thaiv tiv thaiv ntau yam kab mob me me, qee zaum txawm tias tawm tsam kab mob, tab sis feem ntau xav tau hloov ntau zaus thiab ua rau muaj kev saib xyuas siab thiab tus nqi siv tau. Kev siv cov kua txob muaj teeb meem UV-teeb ci yog qhov siv tshuab tua kab mob ceev tshaj plaws vim nws siv cov tshuaj tua kab mob rau cov neeg mob thiab siv tau dav. UV-teeb tau muab kev tiv thaiv zoo tshaj plaws rau cov kab mob tiv thaiv cov kab mob hauv dej, tab sis lawv siv cov hluav taws xob ntau; feem ntau xav tau kev tu kom nquag thiab hloov chaw; thiab yog qhov muaj ceeb toom ntawm mercury thiab cov pa phem.
Qhov muaj kev nyab xeeb rau cov dej haus tau lossis qhov kev daws teeb meem yooj yim thiab pheej yig tsis tau, cov dej hauv hwj yog huab tais. Ntau tau sau txog cov kev cuam tshuam ntawm kev siv cov hwj dej ib leeg ntawm peb lub ntiaj teb ntau cov kab ke dej hiav txwv, thiab kev lag luam kho dej tau tawm tsam cov dej fwj thiab lawv cov yas pov tseg. Qhov tsis tsim nyog, cov qauv kub hauv kev ntxuav dej tau ua rau UV-teeb, uas ua rau pom qhov teeb meem sib luag los ntawm kev cuam tshuam ntawm lawv cov pa phem muaj paug. Mercury paug hauv peb cov dej hiav txwv thiab khoom noj muaj txiaj ntsig yog qhov ua rau muaj kev txhawj xeeb thiab yog qhov teeb meem ntawm United Nations 'Minamata Cov Lus Cog Tseg nrog Mercury. UV-LEDs muaj cov tshuaj muaj mercury dawb rau cov UV-yaj thiab yog qhov zoo tiag tiag hauv cov tshuaj rau cov dej haus kev nyab xeeb; yas pov tseg; thiab cov pa phem muaj mercury.
Cov ntawv thov UV-LED Cov Dej Txuas Hluav Taws Xob
Cov cuab yeej hluav taws xob UV-LED tsis zoo tsuas yog muaj lub peev xwm los hloov cov kua roj UV-teeb nyob hauv lawv cov ntawv thov POU tam sim no, lawv tuaj yeem siv rau qee qhov teeb meem UV-teeb cov khoom tsis haum, sai yuav tsim nyog rau kis nkag ( POE) kev siv tshuaj tua kab mob dej thiab yuav tom qab kawg siv rau hauv qhov nruab nrab ntawm kev siv dej hauv kev lag luam.
Daim ntaub ntawv POU qhov twg UV tu dej yog qhov txiaj ntsig, tab sis qhov twg UV-teeb tau tsis haum, muaj cov hauv kev tshiab rau cov ntawv thov tshiab ntawm UV-LED. Cov cuab yeej hluav taws xob UV-LED tuaj yeem ua rau ntau me dua li UV-teeb thiab tuaj yeem haum rau ntau cov khoom siv txig; tuaj yeem hloov mus thaum cov dej ntws tsis tawm, yog li tsim cov hluav taws xob kub tsis txaus siab piv rau UV-teeb thiab zoo tagnrho rau kev tua cov dej chilled dej; lawv tuaj yeem cycled tawm / ntawm tsis paub kawg thiab tuaj yeem tso tawm UV pulse uas muaj txiaj ntsig zoo rau kev tiv thaiv bio-fouling hauv cov thawv ntim dej; lawv tua hluav taws xob tam sim uas tsis muaj lub sijhawm sov, yog li hluav taws xob hluav taws xob thaum tua; UV-LED yog siv nrog lub tshuab hluav taws xob ncaj qha, ua rau lawv qhov kev tsim tshwj xeeb rau cov xaim hluav taws xob qhov twg lub hnub ci ntawm tes, roj teeb lossis txawm tias ib txhais tes crank siv los ua qhov chaw hluav taws xob. Ntau ntawm cov ntawv tshiab rau UV-LEDs muaj cov kev daws teeb meem uas tau siv tshwj xeeb hauv kev tsim kho hauv ntiaj teb, qhov twg hluav taws xob kev teeb tsa hluav taws xob tsis tuaj / muaj qhov txwv lossis qhov chaw tu yuav tsum tau ua ntawm UV-teeb pom kev zoo. UV-LED cov khoom lag luam muaj txoj hauv kev rau cov tsim cov cuab yeej siv dej, cov tsim cov tshuab tsim dej thiab cov xa tawm kom faib lawv cov khoom sib txawv nrog qhov tsis muaj teeb meem tsis muaj dej tsis huv uas ua rau muaj kev nyab xeeb thiab ntxiv kev nyab xeeb rau lawv cov neeg siv khoom.
POE UV-LED cov khoom siv dej lim dej ua rau pom kev pib tshwm sim nyob rau hauv khw. Cov kev tsim kho sai sai ntawm UV-LEDand cov qauv tsim muaj peev xwm xaiv ob peb UV-LED dej tua kab mob cov tshuab ua kom tag nrho lub tsev UV-LED cov khoom siv tau. Cov khoom siv hluav taws xob ntau dhau UV-LED raug muag rau cov nqi them rau qhov muaj nqis, tab sis kev ua haujlwm ntawm kev txuag cov cuab yeej no sawv cev tus nqi qis dua ntawm cov tswv cuab. Cov cuab yeej ua kom zoo no sawv cev rau cov kev daws teeb meem rau cov dej zoo nyob hauv tsev zoo thiab yuav muaj kev cuam tshuam loj heev ntawm cov nplaim hluav taws xob uas muaj kua roj mercury-raws UV.
Cov cuab yeej siv los yog kev lag luam UV-LED dej tsis zoo yuav siv ntau lub xyoo los ua kom tiav, tab sis nws yeej pom tau tias txoj kev thaiv kev lag luam ntawm cov khoom siv ntawd yuav muag muag dhau sijhawm. Hloov cov mercury-based UV-teeb nrog kev ua tau zoo dua UV-thev naus laus zis hauv lawv cov ntawv thov kev lag luam yuav yog qhov tseem ceeb ntawm UV kev lag luam.
Dab Tsi Nrhiav Kom Tau Hauv UV-LED Dej Tso Cai Tua Hluav Taws Ntaus
Tsis yog txhua qhov UV-LED dej huv yog tsim muaj vaj huam sib luag. Cov kev sib txawv ntawm UV-LED cov ntsiab lus muaj qhov zoo ntawm cov kev siv sib txawv, kev tsim kho kom zoo rau cov ntsiab lus sib txawv ntawm UV-LED ntaus cov tuam txhab thiab ua rau muaj qhov ua tau zoo, siv tau ntev, thiab tag nrho cov tshuaj tua kab, thiab qhov sib txawv ntawm cov ntawv pov thawj UV-LED ntaus ntawv yuav tsum tau txiav txim siab thaum xaiv khoom siv hluav taws xob UV-LED. UV-LED dej tu cov twj siv hluav taws xob thiab ntws-dhau UV-LED cov dej lim ua kom muaj cov ntawv thov sib txawv, thiab qhov sib txawv ntawm cov dej ntws-los ntawm cov khoom siv tau cuam tshuam rau lawv txoj kev ua haujlwm thiab kev ntseeg tau.
Lub tswvyim ntawm UV-LED dej tu tshuab feem ntau hais txog chandelier style ntaus ntawv siv los tiv thaiv bio-zaj duab xis tsim tsis pub dhau lub thawv ntim dej. Cov cuab yeej siv no muaj cov tshuaj tua kab mob qis tab sis yog cov tshuaj daws tau teeb meem zoo rau kev ntxuav tu sab saum npoo av. Ib qho tsis tuaj yeem ntseeg siv cov cuab yeej saib xyuas dej ua kom muaj dej huv los ntawm cov chaw tsis muaj kab mob tsis zoo, raws li tus qauv chandelier style UV-LED yuav tsum muaj lub sijhawm ntev txaus los muab dej kom txaus.
Lub tswvyim ntawm dej ntws-txawm hais tias UV-LED cuab yeej muaj ntau qhov kev tiv thaiv ib puag ncig rau kev ua kom dej tsis huv. Txij li thaum cov kua dej hloov pauv, qhov ntws thiab qhov sib xyaw ua ke tuaj yeem tswj tau zoo dua, cov kab mob sib kis tau zoo dua. Raws li tau hais, tsim qauv ntawm UV-LED dej tua kab mob yuav ua ib qho tseem ceeb raws li lub zog ntawm UV-LED nws tus kheej. UV collimation yog ib txoj hauv kev zoo tshaj plaws rau ua kom qhov kev tua kab mob siab tshaj plaws ntawm UV-LED ntaus ntawv. Zoo ib yam li laser-pointer, cov tsom iav kho qhov muag tau siv los tsim focussed nqaj ntawm UV lub zog nyob rau hauv UV-LED es ho kev ua haujlwm thiab muaj cov kev ua kom zoo kev ua haujlwm tsis muaj tseeb. UV collimation li ua ywj siab ntawm cov reactor cov khoom siv lub zog thiab muaj qhov ua tau zoo nyob rau tag nrho lub neej ntawm UV-LED.
Txhawm rau kev lees paub rau UV-LED dej tua kab ua ke; cov khoom muaj kev ruaj ntseg; tus qauv coj ua ncaj ncees; thiab kev ua haujlwm ntawm kev tso tshuaj tua kab yog qhov tseem ceeb tshaj plaws rau kev txheeb xyuas. Cov txheej txheem ua qauv hauv North America rau cov xwm txheej no yog NSF Tus Txheej Txheem 55 rau UV dej haus UV thiab NSF Tus Qauv 372 rau cov tsis muaj dej haus cov dej haus cov khoom lag luam. Kev ua raws li cov qauv no tau taw qhia tias UV-LED cov cuab yeej yuav tsis qhia txog kev siv tshuaj tsis zoo rau hauv dej, tuaj yeem tuav ntau dua 200 psi ntawm cov dej siab thiab yuav tua cov kab mob kom muaj kev nyab xeeb. Cov ntawv pov thawj lub cev zoo li IAPMO, CSA thiab WQA tuaj yeem lees kev ua raws li NSF tus qauv, thiab cov neeg siv kawg tuaj yeem saib rau lub cev ntawm cov cim kom paub tseeb tias cov qauv NSF tsim nyog raug txheeb xyuas.
Yuav Ua Li Cas Lub Teeb UV-LED Dej Tso Cai Tso Dej
Kev tshawb xyuas lub web yooj yooj yim yuav qhia tau qhov twg UV-LEDwater cov khoom siv tshuaj tua kab mob tau ua rau kev siv hauv tsev lossis khoom siv sib txuas, thiab cov ntaub ntawv hauv tsab xov xwm no tuaj yeem siv coj los xaiv cov cuab yeej zoo raws li nws siv rooj plaub. Raws li UV-LED thev naus laus zis hloov zuj zus, cov khoom siv hluav taws xob UV-LED yav tom ntej nyob hauv kev ua lag luam kho dej yuav tsuas muaj zog dua thiab ua tau zoo dua. Cov txiaj ntsig ntawm UV thiab LED yog qhov tsis lees paub vim tias qhov no yog cov qauv kub tiag tiag hauv lawv tus kheej txoj cai, thiab lawv cov kev sib txuas ua rau ib qho keeb kwm cov txiaj ntsig kev ua lag luam nce qib. POU UV-LED cov khoom siv dej lim ua kom muaj qhov hloov pauv thiab tus nqi pheej yig nyob hauv cov dej haus ntawm cov dej huv uas muaj kev cia siab txo cov kev cuam tshuam ib puag ncig ntawm kev lim dej, thiab thaum kawg POE thiab cov cuab yeej siv hluav taws xob UV-LED yuav tshem tawm qhov kev xav tau ntawm cov mercury hauv cov dej ua ke. Nyob zoo yav tom ntej ntawm UV-LED rau yav tom ntej.
