Teeb meem tsw:
Cov ntxhiab tsw muaj tsawg hauv cov dej hauv av, tab sis muaj ntau dua hauv cov dej saum npoo av, feem ntau yog ntses thiab hauv av. Sulfide yog lub ntsiab ua rau ntses ntses, thiab algae-derived MIB yog lub ntsiab ua rau lub ntiaj teb odors. Cov txheej txheem kev kho cov pa ntawm cov nroj tsuag dej muaj txwv tshem tawm cov tshuaj no. Nyob rau hauv xyoo tas los no, vim muaj kev hloov pauv ntawm huab cua thiab dej ecosystems, cov ntxhiab tsw xws li geosmin kuj tau tsim.
Ntxiv nrog rau cov ntxhiab tsw los ntawm tej yam ntuj tso, peb kuj muaj kev txhawj xeeb txog kev siv thiab tso tawm cov khoom siv tshuaj, uas yuav ua rau muaj teeb meem tsw tshiab, xws li cyclic acetals thiab bis (2-chloro-1-methylethyl) ether. Yav dhau los, peb feem ntau tsom mus rau kev noj qab haus huv ntawm cov tshuaj, tab sis nyob rau xyoo tas los no, cov tshuaj tsw qab tau pib tshwm sim ntau zaus, nrog cov ntxhiab tsw txawv, uas tej zaum yuav ua rau cov ntxhiab tsw tsw ntxhiab, av tsw qab, fruity sweetness, thiab grassy odors.
Pollutants sab nraum cov qauv:
Hauv kev soj ntsuam ntawm qhov dej num, perchlorate thiab perfluorinated pollutants yog ob qho kev ua qias neeg tshaj plaws. Lawv muaj qee yam kev pheej hmoo rau kev noj qab haus huv thiab muaj tus nqi tshem tawm tsawg hauv cov txheej txheem dej cog, yog li kev tswj hwm qhov chaw yog qhov tseem ceeb. Cov txiaj ntsig ntawm kev tshawb fawb ntawm qhov dej num kuj tau ua lub luag haujlwm txhawb nqa zoo hauv kev hloov kho cov qauv dej hauv lub tebchaws.
Cov technologies sib txawv ua tau zoo npaum li cas hauv kev tshem tawm cov pa phem?
Nyob rau hauv cov nqe lus ntawm kev kho mob technology, yuav ua li cas zoo npaum li cas technologies nyob rau hauv tshem tawm cov kab mob no?
Coj cov teeb meem tsw ua piv txwv. Cov tshuaj tsw qab sib txawv yog tsim rau cov cuab yeej tshem tawm sib txawv. Cov tshuaj oxidation yog tsim rau sulfides, activated carbon adsorption yog haum rau MIB thiab lwm yam odorants, thiab ozone-activated carbon sib sib zog nqus txheej txheem yog haum rau complex odorants uas sib txawv odorants coexist. Peb siv cov adsorption treatability Performance index thiab oxidation treatability Performance index raws li kev tswj hwm, tso cov pa phem sib txawv hauv qhov kev sib koom ua ke, thiab ua ntej ntsuas cov yam ntxwv kho mob ntawm ntau yam ntxhiab tsw.
Activated carbon plays lub luag haujlwm tseem ceeb hauv kev tshem tawm tsw. Tom qab kev tshawb fawb, nws tau pom tias qhov muaj peev xwm adsorption ntawm cov pa roj carbon activated muaj me ntsis ua rau tus nqi iodine thiab tus nqi methylene xiav, tab sis yog proportional rau micropore ntim. Lub micropore ntim tau nce los ntawm {{{0}}.25cm3·g-1 txog 0.45cm3·g-1, thiab lub peev xwm adsorption ntawm activated carbon yuav nce 3 zaug.
Tsis tas li ntawd, nws tseem yuav tsum tau xav txog yuav ua li cas txo qis kev sib tw ntawm NOM (natural organic teeb meem). NOM tuaj yeem sib tw ncaj qha rau qhov chaw adsorption lossis thaiv cov micropores kom txo cov adsorption efficiency ntawm cov pa roj carbon activated. Yuav daws qhov teeb meem no li cas? Ib lub tswv yim yog sim nrhiav cov pa roj carbon activated uas tuaj yeem nqus cov pa phem los ntawm cov khoom xa mus; Lwm lub tswv yim yog los txo qhov cuam tshuam ntawm NOM kev sib tw los ntawm kev hloov cov txheej txheem ua kom cov pa roj carbon ntxiv lossis cov txheej txheem kho. Cov haujlwm saum toj no tau ua tiav, thiab nws cia siab tias nws tuaj yeem ua haujlwm rau yav tom ntej.
Rau qee cov tshuaj tsw qab, noj cyclic acetal ua piv txwv, peb tau soj ntsuam nws cov adsorption treatability thiab oxidation treatability thiab pom tias ntau yam kuab paug nyob rau hauv pawg no txawv heev, ib txhia yog haum rau adsorption, thiab ib co yog haum rau oxidation. Rau hom tshuaj no, ozone feem ntau muaj qee yam kev tshem tawm. Thaum nws cov concentration siab, nws tseem yuav tsum tau ua kom zoo dua qhov kev tshem tawm cov nyhuv, xws li hloov cov ozone ntxiv los yog cov txheej txheem ntxiv.
Muab piv cov ntxhiab tshem tawm cov txiaj ntsig ntawm kev lim dej tom qab xuab zeb thiab cov txheej txheem ua ntej cov xuab zeb pom: post-ozone activated carbon sand filtration yog siv ntau yam haujlwm kom zoo dua tshem tawm yam xws li turbidity thiab microorganisms. Los ntawm qhov kev xav ntawm tsw, peb pom tias qhov kev tshem tawm cov kab mob paug los ntawm cov txheej txheem tom qab xuab zeb pom-ozone / BAC qis dua li ntawm cov txheej txheem ua ntej xuab zeb-ozone / BAC. Yog li ntawd, txawm tias tom qab xuab zeb pom muaj nws cov txiaj ntsig engineering, nws kuj yuav tsum tau tshawb xyuas ntxiv rau qee qhov thiab sib npaug.
Rau kev tshem tawm cov tshuaj perfluorinated, tam sim no, cov tshuab ua kom huv dej ib txwm muaj nws cov kev txwv, thiab nws tseem yuav tsum tau daws los ntawm kev txhim kho cov adsorption efficiency ntawm activated carbon.
Yuav ua li cas nrog nws? Txav qhov taw tes tswj kev pheej hmoo rau pem hauv ntej
Muaj ntau cov kab mob paug hauv cov dej. Ntxiv nrog rau qhov txuas ntxiv ntawm thev naus laus zis, peb tuaj yeem ua dab tsi ntxiv?
Qhov tseeb, nws yog qhov tsim nyog los txuas cov qauv dej phwj tuaj, cov qauv dej thiab cov qauv dej haus uas muaj feem xyuam nrog cov qauv ua tiav. Piv txwv li, perchlorates thiab perfluorinated tebchaw, uas nyuaj rau tshem tawm hauv cov txheej txheem dej huv huv, tuaj yeem tswj tau nruj me ntsis hauv cov qauv dej phwj tuaj los thaiv qhov chaw ntawm cov tshuaj lom neeg. Raws li qhov no, kev txhawb nqa kev sib txuas tsis sib haum xeeb ntawm cov qauv dej zoo, cov qauv tso tawm thiab cov qauv dej haus, nrog rau kev hloov kho cov txheej txheem ntawm cov pa phem tshiab hauv cov qauv dej haus, yog ib lub tswv yim zoo los daws cov dej tsis zoo, txhim kho kev nyab xeeb ntawm cov dej haus. thiab muab cov dej haus zoo.