Kev lag luam kws tshuaj dej khib nyiab feem ntau suav nrog cov tshuaj tua kab mob tsim cov dej khib nyiab thiab cov tshuaj hluavtaws tsim cov dej khib nyiab.Kev lag luam kev lag luam dej khib nyiab feem ntau suav nrog plaub pawg: tshuaj tua kab mob cov dej khib nyiab, cov tshuaj tua hluav taws xob tsim cov dej khib nyiab, Suav patent tshuaj tsim cov dej khib nyiab, ntxuav dej thiab ntxuav cov dej khib nyiab los ntawm ntau cov txheej txheem npaj.Cov dej khib nyiab yog tus cwj pwm los ntawm kev sib xyaw ua ke, cov ntsiab lus organic siab, muaj kuab lom, xim sib sib zog nqus, cov ntsiab lus ntsev siab, tshwj xeeb tshaj yog cov khoom tsis zoo biochemical thiab tsis sib xws.Nws yog cov dej khib nyiab hauv kev lag luam uas nyuaj rau kev kho.Nrog rau kev txhim kho ntawm kuv lub teb chaws kev lag luam tshuaj, cov dej khib nyiab tau maj mam dhau los ua ib qho tseem ceeb ntawm cov pa phem.
1. Txoj kev kho cov dej khib nyiab
Cov txheej txheem kev kho mob ntawm cov dej khib nyiab tuaj yeem raug suav hais tias yog: kev kho mob ntawm lub cev, kev kho tshuaj lom neeg, kev kho biochemical thiab kev sib xyaw ua ke ntawm ntau txoj kev, txhua txoj kev kho mob muaj nws qhov zoo thiab qhov tsis zoo.
Kev kho lub cev thiab tshuaj lom neeg
Raws li cov dej zoo ntawm cov dej khib nyiab, kev kho physicochemical yuav tsum tau siv los ua kev kho ua ntej lossis tom qab kev kho mob rau kev kho mob biochemical.Tam sim no siv cov kev kho lub cev thiab tshuaj lom neeg feem ntau suav nrog coagulation, huab cua flotation, adsorption, ammonia stripping, electrolysis, ion pauv thiab membrane sib cais.
coagulation
Cov tshuab no yog ib txoj kev kho dej uas siv dav hauv tsev thiab txawv teb chaws.Nws yog dav siv nyob rau hauv kev kho mob ua ntej thiab tom qab kev kho mob cov dej khib nyiab, xws li txhuas sulfate thiab polyferric sulfate nyob rau hauv tsoos suav tshuaj dej khib nyiab.Tus yuam sij rau kev kho coagulation kom zoo yog kev xaiv kom raug thiab ntxiv cov coagulants nrog kev ua tau zoo.Nyob rau hauv xyoo tas los no, txoj kev loj hlob ntawm cov coagulants tau hloov los ntawm qis-molecular mus rau high-molecular polymers, thiab los ntawm ib leeg-khoom mus rau composite functionalization [3].Liu Minghua et al.[4] kho COD, SS thiab chromaticity ntawm cov kua khib nyiab nrog pH ntawm 6.5 thiab flocculant ntau npaum li cas ntawm 300 mg / L nrog kev ua haujlwm siab ua haujlwm flocculant F-1.Cov kev tshem tawm yog 69.7%, 96.4% thiab 87.5%, feem.
huab cua flotation
Huab cua flotation feem ntau suav nrog ntau hom xws li aeration cua flotation, yaj huab cua flotation, tshuaj cua flotation, thiab electrolytic cua flotation.Xinchang Pharmaceutical Factory siv CAF vortex cua flotation ntaus ntawv los pretreat tshuaj khib nyiab.Qhov nruab nrab tshem tawm ntawm COD yog kwv yees li 25% nrog cov tshuaj tsim nyog.
Txoj kev adsorption
Feem ntau siv cov adsorbents yog cov pa roj carbon activated, activated thee, humic acid, adsorption resin, thiab lwm yam. Wuhan Jianmin Pharmaceutical Factory siv thee tshauv adsorption - theem nrab aerobic lom cov txheej txheem kho cov dej khib nyiab.Cov txiaj ntsig tau pom tias COD tshem tawm tus nqi ntawm adsorption pretreatment yog 41.1%, thiab BOD5 / COD piv tau txhim kho.
Membrane sib cais
Membrane technologies muaj xws li thim rov qab osmosis, nanofiltration thiab fiber ntau daim nyias nyias kom rov qab tau cov ntaub ntawv tseem ceeb thiab txo tag nrho cov organic emissions.Cov yam ntxwv tseem ceeb ntawm cov thev naus laus zis no yog cov cuab yeej siv yooj yim, kev ua haujlwm yooj yim, tsis muaj theem hloov pauv thiab tshuaj lom neeg hloov pauv, kev ua haujlwm siab thiab txuag hluav taws xob.Juanna et al.siv nanofiltration membranes cais cinnamycin cov dej khib nyiab.Nws tau pom tias cov nyhuv inhibitory ntawm lincomycin ntawm cov kab mob hauv cov dej khib nyiab tau txo qis, thiab cinnamycin tau zoo lawm.
electrolysis
Cov txheej txheem muaj qhov zoo ntawm kev ua haujlwm siab, kev ua haujlwm yooj yim thiab cov zoo li, thiab cov nyhuv electrolytic decolorization yog qhov zoo.Li Ying [8] tau ua cov tshuaj electrolytic pretreatment ntawm riboflavin supernatant, thiab tshem tawm cov nqi ntawm COD, SS thiab chroma mus txog 71%, 83% thiab 67%, feem.
tshuaj kho mob
Thaum siv cov txheej txheem tshuaj, kev siv ntau dhau ntawm qee cov tshuaj reagents yuav ua rau muaj kuab paug thib ob ntawm cov dej hauv lub cev.Yog li ntawd, cov kev tshawb fawb tseem ceeb yuav tsum tau ua ua ntej tsim.Cov txheej txheem tshuaj muaj xws li hlau-carbon method, chemical redox method (Fenton reagent, H2O2, O3), sib sib zog nqus oxidation technology, thiab lwm yam.
Hlau carbon method
Kev lag luam kev lag luam qhia tau hais tias kev siv Fe-C ua cov kauj ruam ua ntej rau cov dej khib nyiab tuaj yeem txhim kho biodegradability ntawm cov effluent.Lou Maoxing siv hlau-micro-electrolysis-anaerobic-aerobic-air flotation ua ke kev kho mob los kho cov dej khib nyiab ntawm cov tshuaj intermediates xws li erythromycin thiab ciprofloxacin.COD tshem tawm tus nqi tom qab kho nrog hlau thiab carbon yog 20%.%, thiab qhov kawg effluent ua raws li lub teb chaws thawj-chav txheej txheem ntawm "Integrated Wastewater Discharge Standard" (GB8978-1996).
Fenton's reagent ua
Kev sib xyaw ua ke ntawm ferrous ntsev thiab H2O2 yog hu ua Fenton's reagent, uas tuaj yeem tshem tawm cov teeb meem organic refractory uas tsis tuaj yeem tshem tawm los ntawm kev kho dej khib nyiab.Nrog rau kev tshawb fawb tob zuj zus, lub teeb ci ultraviolet (UV), oxalate (C2O42-), thiab lwm yam tau nkag mus rau hauv Fenton's reagent, uas zoo heev txhim kho lub peev xwm oxidation.Siv TiO2 ua ib qho catalyst thiab 9W low-pressure mercury teeb ua lub teeb ci, cov dej khib nyiab tau kho nrog Fenton's reagent, decolorization tus nqi yog 100%, COD tshem tawm tus nqi yog 92.3%, thiab nitrobenzene compound txo los ntawm 8.05mg. /L.0.41 mg/l.
Oxidation
Txoj kev tuaj yeem txhim kho biodegradability ntawm cov dej khib nyiab thiab muaj tus nqi tshem tawm zoo dua ntawm COD.Piv txwv li, peb cov tshuaj tua kab mob pov tseg xws li Balcioglu tau kho los ntawm ozone oxidation.Cov txiaj ntsig tau pom tias ozonation ntawm cov dej khib nyiab tsis tsuas yog nce BOD5 / COD piv, tab sis kuj yog COD tshem tawm tus nqi siab dua 75%.
Oxidation technology
Kuj hu ua advanced oxidation technology, nws coj ua ke cov kev tshawb fawb tshiab ntawm lub teeb niaj hnub, hluav taws xob, suab, hlau nplaum, cov ntaub ntawv thiab lwm yam kev qhuab qhia zoo xws li electrochemical oxidation, ntub oxidation, supercritical dej oxidation, photocatalytic oxidation thiab ultrasonic degradation.Ntawm lawv, ultraviolet photocatalytic oxidation tshuab muaj qhov zoo ntawm qhov tshiab, kev ua haujlwm siab, thiab tsis muaj kev xaiv rau cov dej khib nyiab, thiab tshwj xeeb tshaj yog haum rau kev degradation ntawm unsaturated hydrocarbons.Piv nrog rau cov kev kho mob xws li ultraviolet rays, cua sov, thiab siab, ultrasonic kev kho mob ntawm cov organic teeb meem yog ntau ncaj qha thiab yuav tsum tau cov khoom tsawg dua.Raws li hom tshiab ntawm kev kho mob, ntau thiab ntau cov kev saib xyuas tau raug them.Xiao Guangquan et al.[13] siv ultrasonic-aerobic lom hu rau txoj kev los kho cov dej khib nyiab.Kev kho ultrasonic tau ua tiav rau 60 s thiab lub zog yog 200 w, thiab tag nrho COD tshem tawm tus nqi ntawm cov dej khib nyiab yog 96%.
Kev kho mob biochemical
Biochemical kho tshuab yog siv dav siv tshuaj kho dej khib nyiab thev naus laus zis, suav nrog aerobic biological method, anaerobic biological method, thiab aerobic-anaerobic ua ke.
Kev kho mob aerobic lom
Txij li thaum feem ntau ntawm cov tshuaj khib nyiab yog cov dej khib nyiab siab, nws yog ib qho tsim nyog yuav tsum tau dilute cov tshuaj tov thaum lub sij hawm kho aerobic lom.Yog li ntawd, lub zog noj yog loj, cov dej khib nyiab tuaj yeem kho biochemically, thiab nws yog qhov nyuaj rau kev tso tawm ncaj qha mus rau tus qauv tom qab kev kho biochemical.Yog li ntawd, aerobic siv ib leeg.Muaj ob peb txoj kev kho mob muaj thiab yuav tsum tau kho ua ntej.Feem ntau siv aerobic biological kev kho mob xws li activated sludge method, tob zoo aeration txoj kev, adsorption biodegradation method (AB method), hu rau oxidation method, sequencing batch activated sludge method (SBR method), circulating activated sludge method, etc.(CASS method) thiab lwm yam.
Deep well aeration method
Kev sib sib zog nqus dej aeration yog lub tshuab ua kom siab ceev sludge.Cov txheej txheem muaj kev siv cov pa oxygen siab, qhov chaw me me hauv pem teb, kev kho mob zoo, kev nqis peev tsawg, kev ua haujlwm qis, tsis muaj sludge bulking thiab tsawg sludge ntau lawm.Tsis tas li ntawd, nws cov nyhuv thermal rwb thaiv tsev yog qhov zoo, thiab kev kho mob tsis cuam tshuam los ntawm huab cua, uas tuaj yeem ua kom muaj txiaj ntsig ntawm kev kho dej phwj rau lub caij ntuj no nyob rau sab qaum teb.Tom qab lub siab-concentration organic wastewater los ntawm Northeast Pharmaceutical Factory tau biochemically kho los ntawm qhov tob tob aeration tank, COD tshem tawm tus nqi mus txog 92.7%.Nws tuaj yeem pom tias kev ua haujlwm tau zoo heev, uas yog qhov zoo heev rau kev ua haujlwm tom ntej.ua lub luag haujlwm txiav txim siab.
AB method
Txoj kev AB yog ib qho ultra-high-load activated sludge method.Qhov kev tshem tawm ntawm BOD5, COD, SS, phosphorus thiab ammonia nitrogen los ntawm AB txheej txheem feem ntau yog siab dua li cov txheej txheem activated sludge.Nws qhov zoo tshaj plaws yog qhov siab load ntawm A ntu, muaj zog tiv thaiv kev poob siab, thiab cov nyhuv buffering loj ntawm pH tus nqi thiab cov tshuaj lom.Nws yog tshwj xeeb tshaj yog haum rau kev kho cov dej phwj tuaj nrog siab concentration thiab kev hloov loj hauv cov dej zoo thiab kom muaj nuj nqis.Txoj kev ntawm Yang Junshi et al.siv cov hydrolysis acidification-AB biological txoj kev los kho cov tshuaj tua kab mob pov tseg, uas muaj cov txheej txheem luv luv, kev txuag hluav taws xob, thiab cov nqi kho mob qis dua cov tshuaj flocculation-biological kev kho cov dej khib nyiab zoo sib xws.
Kev tiv thaiv kab mob oxidation
Cov thev naus laus zis no muab cov txiaj ntsig zoo ntawm cov txheej txheem activated sludge thiab biofilm txoj kev, thiab muaj qhov zoo ntawm qhov ntim siab, tsis tshua muaj sludge ntau lawm, muaj zog cuam tshuam, kev ua haujlwm ruaj khov thiab kev tswj xyuas yooj yim.Ntau txoj haujlwm txais yuav ob-theem qauv, ua rau muaj kev sib tw hauv cov neeg sib txawv, thiab txhim kho biochemical teebmeem thiab kev poob siab.Hauv engineering, anaerobic digestion thiab acidification feem ntau yog siv los ua cov kauj ruam ua ntej, thiab kev sib cuag oxidation yog siv los kho cov dej khib nyiab.Harbin North Pharmaceutical Factory txais yuav hydrolysis acidification-ob-theem lom neeg sib cuag oxidation txheej txheem los kho cov dej khib nyiab.Cov txiaj ntsig kev ua haujlwm tau pom tias cov nyhuv kho tau ruaj khov thiab cov txheej txheem sib xyaw ua ke yog tsim nyog.Nrog rau kev loj hlob zuj zus ntawm cov txheej txheem thev naus laus zis, daim ntawv thov kev lag luam kuj muaj ntau dua.
SBR txoj kev
Txoj kev SBR muaj qhov zoo ntawm qhov muaj zog poob siab, kev ua haujlwm siab sludge, qauv yooj yim, tsis xav tau rov qab, hloov tau yooj yim, me me hneev taw, tsis tshua muaj peev txheej, kev ua haujlwm ruaj khov, siab tshem tawm tus nqi, thiab zoo denitrification thiab phosphorus tshem tawm..Fluctuating dej khib nyiab.Kev sim ntawm kev kho cov dej khib nyiab los ntawm SBR txheej txheem qhia tau hais tias lub sij hawm aeration muaj kev cuam tshuam zoo rau kev kho cov txheej txheem;kev teeb tsa ntawm cov ntu anoxic, tshwj xeeb tshaj yog rov tsim cov anaerobic thiab aerobic, tuaj yeem txhim kho cov txiaj ntsig kho mob;SBR txhim kho kev kho mob ntawm PAC Cov txheej txheem tuaj yeem txhim kho cov nyhuv tshem tawm ntawm lub cev.Nyob rau hauv xyoo tas los no, cov txheej txheem tau dhau los ua qhov zoo tshaj plaws thiab siv dav hauv kev kho cov dej khib nyiab.
Kev kho mob anaerobic lom
Tam sim no, kev kho cov dej khib nyiab siab hauv tsev thiab txawv teb chaws feem ntau yog ua raws li txoj hauv kev anaerobic, tab sis cov dej COD tseem tseem muaj siab tom qab kev kho mob nrog cov txheej txheem anaerobic cais, thiab tom qab kev kho mob (xws li kev kho aerobic lom) feem ntau yog. xav tau.Tam sim no, nws tseem yog qhov tsim nyog los ntxiv dag zog rau Kev Txhim Kho thiab tsim cov khoom siv hluav taws xob zoo anaerobic reactors, thiab kev tshawb fawb tob txog kev ua haujlwm.Cov kev siv tau zoo tshaj plaws hauv kev kho dej khib nyiab yog Upflow Anaerobic Sludge Bed (UASB), Anaerobic Composite Bed (UBF), Anaerobic Baffle Reactor (ABR), hydrolysis, thiab lwm yam.
UAS Act
UASB reactor muaj qhov zoo ntawm kev ua haujlwm siab anaerobic digestion efficiency, yooj yim qauv, luv hydraulic retention lub sij hawm, thiab tsis xav tau ib tug cais sludge rov qab ntaus ntawv.Thaum UASB yog siv rau hauv kev kho mob ntawm kanamycin, chlorin, VC, SD, qabzib thiab lwm yam khoom siv tshuaj khib nyiab, cov ntsiab lus SS feem ntau tsis siab dhau los xyuas kom meej tias COD tshem tawm tus nqi siab dua 85% mus rau 90%.COD tshem tawm tus nqi ntawm ob-theem series UASB tuaj yeem ncav cuag ntau dua 90%.
UBF method
Yuav Wenning et al.UASB and UBF test comparative test.Cov txiaj ntsig tau pom tias UBF muaj cov yam ntxwv ntawm kev hloov pauv huab cua zoo thiab kev sib cais, ntau yam biomass thiab kab mob lom neeg, kev ua haujlwm siab, thiab kev ua haujlwm ruaj khov.Oxygen bioreactor.
Hydrolysis thiab acidification
Lub tank hydrolysis hu ua Hydrolyzed Upstream Sludge Bed (HUSB) thiab yog hloov kho UASB.Piv nrog rau tag nrho cov txheej txheem anaerobic tank, lub tank hydrolysis muaj cov txiaj ntsig zoo hauv qab no: tsis tas yuav tsum tau sib khi, tsis muaj nplawm, tsis muaj peb-theem sib cais, uas txo cov nqi thiab kev tswj xyuas;nws tuaj yeem degrade macromolecules thiab cov organic uas tsis yog biodegradable hauv cov dej phwj tuaj rau hauv cov khoom me me.Qhov yooj yim biodegradable organic teeb meem txhim kho biodegradability ntawm cov dej nyoos;cov tshuaj tiv thaiv yog ceev ceev, lub tank ntim me me, lub peev kev tsim peev yog me me, thiab cov sludge ntim yog txo.Nyob rau hauv xyoo tas los no, cov txheej txheem hydrolysis-aerobic tau siv dav hauv kev kho cov dej khib nyiab.Piv txwv li, lub Hoobkas biopharmaceutical siv hydrolytic acidification-ob-theem lom neeg tiv tauj oxidation txheej txheem los kho cov dej khib nyiab.Kev ua haujlwm ruaj khov thiab cov nyhuv tshem tawm cov organic yog qhov zoo kawg li.Cov kev tshem tawm ntawm COD, BOD5 SS thiab SS yog 90.7%, 92.4% thiab 87.6%, feem.
Cov txheej txheem kho anaerobic-aerobic ua ke
Txij li kev kho aerobic lossis kev kho anaerobic ib leeg tsis tuaj yeem ua tau raws li qhov yuav tsum tau ua, ua ke cov txheej txheem xws li anaerobic-aerobic, hydrolytic acidification-aerobic kev kho mob txhim kho biodegradability, cuam tshuam tsis kam, peev nqi thiab kev kho cov dej khib nyiab.Nws yog dav siv nyob rau hauv engineering xyaum vim hais tias ntawm kev ua tau zoo ntawm ib tug ua txoj kev.Piv txwv li, lub chaw tsim tshuaj siv cov txheej txheem anaerobic-aerobic los kho cov dej khib nyiab, BOD5 tshem tawm tus nqi yog 98%, COD tshem tawm tus nqi yog 95%, thiab cov nyhuv kho tau ruaj khov.Micro-electrolysis-anaerobic hydrolysis-acidification-SBR txheej txheem yog siv los kho cov tshuaj hluavtaws kws tshuaj dej khib nyiab.Cov txiaj ntsig tau pom tias tag nrho cov txheej txheem muaj kev cuam tshuam zoo rau kev hloov pauv hauv cov dej khib nyiab zoo thiab ntau, thiab COD tshem tawm tus nqi tuaj yeem ncav cuag 86% mus rau 92%, uas yog qhov kev xaiv zoo tshaj plaws rau kev kho cov dej khib nyiab.- Catalytic Oxidation - Sib cuag Oxidation txheej txheem.Thaum COD ntawm cov neeg muaj peev xwm muaj txog 12 000 mg / L, COD ntawm cov effluent tsawg dua 300 mg / L;Kev tshem tawm tus nqi ntawm COD nyob rau hauv cov tshuaj biochemical refractory cov dej khib nyiab kho los ntawm biofilm-SBR txoj kev tuaj yeem ncav cuag 87.5% ~ 98.31%, uas yog ntau dua li kev siv ib leeg kho cov nyhuv ntawm biofilm txoj kev thiab SBR txoj kev.
Tsis tas li ntawd, nrog kev txhim kho txuas ntxiv ntawm kev siv tshuab membrane, daim ntawv thov kev tshawb fawb ntawm daim nyias nyias bioreactor (MBR) hauv kev kho cov dej khib nyiab tau maj mam tob zuj zus.MBR sib txuas cov yam ntxwv ntawm cov txheej txheem sib cais membrane thiab kev kho mob lom, thiab muaj qhov zoo ntawm qhov ntim siab, muaj zog tiv thaiv, me me hneev taw, thiab cov sludge tsawg dua.Cov txheej txheem anaerobic membrane bioreactor tau siv los kho cov tshuaj nruab nrab acid chloride cov dej khib nyiab nrog COD ntawm 25 000 mg / L.COD tshem tawm tus nqi ntawm qhov system tseem nyob saum 90%.Thawj thawj zaug, lub peev xwm ntawm cov kab mob yuav tsum ua kom txo qis cov organic teeb meem tau siv.Extractive membrane bioreactors yog siv los kho cov dej khib nyiab uas muaj 3,4-dichloroaniline.HRT yog 2 h, tus nqi tshem tawm mus txog 99%, thiab cov txiaj ntsig zoo tshaj plaws tau txais.Txawm hais tias qhov teeb meem ntawm daim nyias nyias fouling, nrog kev txhim kho txuas ntxiv ntawm cov tshuab membrane, MBR yuav siv dav dua hauv kev kho cov dej khib nyiab.
2. Cov txheej txheem kho thiab xaiv cov dej khib nyiab
Cov yam ntxwv dej zoo ntawm cov dej khib nyiab ua rau nws tsis yooj yim rau cov dej khib nyiab feem ntau tau txais kev kho biochemical ib leeg, yog li tsim nyog pretreatment yuav tsum tau ua ua ntej kev kho biochemical.Feem ntau, lub tank tswj yuav tsum tau teeb tsa los kho cov dej zoo thiab pH tus nqi, thiab cov txheej txheem physicochemical lossis tshuaj yuav tsum tau siv los ua cov txheej txheem pretreatment raws li qhov xwm txheej tiag tiag kom txo tau SS, salinity thiab ib feem ntawm COD hauv dej, txo. cov tshuaj lom neeg inhibitory hauv cov dej khib nyiab, thiab txhim kho cov degradability ntawm cov dej khib nyiab.los pab txhawb kev kho biochemical tom ntej ntawm cov dej khib nyiab.
Cov dej khib nyiab ua ntej tuaj yeem kho tau los ntawm cov txheej txheem anaerobic thiab aerobic raws li nws cov yam ntxwv zoo.Yog tias qhov kev xav tau ntawm effluent siab, cov txheej txheem kho aerobic yuav tsum tau txuas ntxiv tom qab cov txheej txheem kho aerobic.Kev xaiv cov txheej txheem tshwj xeeb yuav tsum ua tib zoo xav txog yam xws li qhov xwm txheej ntawm cov dej khib nyiab, kev kho cov txheej txheem, kev nqis peev hauv kev tsim kho vaj tse, thiab kev ua haujlwm thiab kev saib xyuas kom ua tau raws li kev siv tshuab thiab kev lag luam.Cov txheej txheem tag nrho yog cov txheej txheem ua ke ntawm pretreatment-anaerobic-aerobic-(tom qab kho).Cov txheej txheem ua ke ntawm hydrolysis adsorption-contact oxidation-filtration yog siv los kho cov dej khib nyiab uas muaj cov tshuaj insulin.
3. Recycling thiab siv cov khoom muaj txiaj ntsig hauv cov dej khib nyiab
Txhawb kev tsim khoom huv hauv kev lag luam tshuaj, txhim kho kev siv tus nqi ntawm cov khoom siv raw, kev rov qab zoo ntawm cov khoom nruab nrab thiab cov khoom lag luam, thiab txo lossis tshem tawm cov pa phem hauv cov txheej txheem tsim khoom los ntawm kev hloov pauv thev naus laus zis.Vim qhov tshwj xeeb ntawm qee cov txheej txheem kev tsim tshuaj, cov dej khib nyiab muaj ntau cov khoom siv rov ua dua tshiab.Rau kev kho cov dej khib nyiab zoo li no, thawj kauj ruam yog txhawm rau txhim kho cov khoom siv rov qab thiab kev siv dav.Rau kev siv tshuaj nruab nrab cov dej khib nyiab nrog ammonium ntsev cov ntsiab lus siab li 5% mus rau 10%, cov yeeb yaj kiab wiper ruaj khov yog siv rau evaporation, concentration thiab crystallization kom rov zoo (NH4) 2SO4 thiab NH4NO3 nrog ib feem loj ntawm li 30%.Siv ua chiv los yog rov siv dua.Cov txiaj ntsig kev lag luam yog pom tseeb;lub tuam txhab tshuaj high-tech siv cov txheej txheem purging los kho cov dej khib nyiab nrog cov ntsiab lus siab formaldehyde.Tom qab cov pa roj formaldehyde rov qab los, nws tuaj yeem tsim tau rau hauv cov tshuaj formalin reagent lossis hlawv raws li lub rhaub dej kub.Los ntawm kev rov qab los ntawm formaldehyde, kev siv cov peev txheej ruaj khov tuaj yeem ua tiav, thiab cov nqi peev ntawm cov chaw kho mob tuaj yeem rov qab los ntawm 4 txog 5 xyoos, paub txog kev sib koom ua ke ntawm cov txiaj ntsig ib puag ncig thiab cov txiaj ntsig kev lag luam.Txawm li cas los xij, muaj pes tsawg leeg ntawm cov dej khib nyiab dav dav yog qhov nyuaj, nyuaj rau kev rov ua dua tshiab, cov txheej txheem rov qab yog qhov nyuaj, thiab tus nqi siab.Yog li ntawd, kev siv tshuab ua dej phwj zoo heev thiab ua haujlwm tau zoo yog tus yuam sij los daws qhov teeb meem dej phwj tag.
4 Kev xaus
Muaj ntau cov lus ceeb toom txog kev kho cov dej khib nyiab.Txawm li cas los xij, vim muaj kev sib txawv ntawm cov khoom siv raw thiab cov txheej txheem hauv kev lag luam tshuaj, cov dej khib nyiab zoo sib txawv.Yog li ntawd, tsis muaj kev paub tab thiab kev sib koom ua ke rau kev kho cov dej khib nyiab.Txoj kev twg los xaiv yog nyob ntawm cov dej khib nyiab.xwm.Raws li cov yam ntxwv ntawm cov dej khib nyiab, pretreatment feem ntau yuav tsum tau txhim kho biodegradability ntawm cov dej khib nyiab, pib tshem tawm cov pa phem, thiab tom qab ntawd ua ke nrog kev kho biochemical.Tam sim no, kev txhim kho cov khoom siv hluav taws xob zoo thiab siv tau zoo yog qhov teeb meem ceev uas yuav tsum tau daws.
HoobkasTuam Tshoj TshuajAnionic PAM Polyacrylamide Cationic Polymer Flocculant, Chitosan, Chitosan Powder, haus dej kho, dej decoloring tus neeg sawv cev, dadmac, diallyl dimethyl ammonium chloride, dicyandiamide, dcda, defoamer, antifoam, pac, poly aluminium chloride, polyaluminium, polyelectrolyte, polyelectrolyte , pdadmac, polyamine, Peb tsuas yog tsis tsuas yog xa cov khoom zoo rau peb cov neeg yuav khoom xwb, tab sis tseem ceeb tshaj yog peb cov neeg muab kev pabcuam zoo tshaj plaws nrog rau cov nqi muag khoom hnyav.
ODM Hoobkas Tuam Tshoj PAM, Anionic Polyacrylamide, HPAM, PHPA, Peb lub tuam txhab ua haujlwm los ntawm kev ua haujlwm ntawm "kev ncaj ncees-raws li, kev koom tes tsim, tib neeg taw qhia, yeej-yeej kev koom tes".Peb cia siab tias peb tuaj yeem muaj kev sib raug zoo nrog cov neeg ua lag luam los ntawm thoob plaws lub ntiaj teb.
Tshaj tawm los ntawm Baidu.
Post lub sij hawm: Aug-15-2022