Inorganic Tubular Membrane

● Lub silicon carbide membrane yog tsim los ntawm cov txheej txheem recrystallization, nrog sintering kub ntawm 2400 degree . Thaum lub sij hawm sintering txheej txheem, lub caj dab sintering nruab nrab ntawm silicon carbide aggregates undergoes ib theem hloov ntawm cov khoom rau roj mus rau cov khoom, nrog ib tug qhib tus nqi ntawm ntau tshaj 45%. Cov tsim lim channel muaj kev sib txuas muaj zog, ua ke nrog lub hauv paus hydrophilicity ntawm cov khoom siv silicon carbide (lub kaum sab xis tsuas yog 0.3 degree), uas ua rau cov dej ntshiab ntws mus txog 3200LMH, thiab yog hydrophilic thiab oleophobic.

● Lub ntsiab lus isoelectric ntawm silicon carbide membrane yog nyob ib ncig ntawm pH 3, thiab lub ntsej muag ntawm daim nyias nyias tuaj yeem tswj tau qhov tsis zoo ntawm pH ntau yam, txhim kho nws cov pa phem.

● Cov tshuaj lom neeg ruaj khov zoo heev, muaj peev xwm ua haujlwm hauv qhov chaw huab cua (pH ntau yam 1-14); ntau yam kev npaj tu yuav tsim tau raws li cov yam ntxwv ntawm cov pa phem; Oxidants muaj lub siab ntev, nrog rau ozone thiab hydroxyl radicals.

★ High flux, 3-10 zaug piv rau cov organic membranes;

★ Me me hneev taw, txuag av;

★ Kev siv dej rov qab los yog txo qis dua 50%;

★ Cov tshuaj tiv thaiv kab mob, muaj peev xwm ua haujlwm hauv pH 0-14 ib puag ncig, acid thiab alkali resistant;

★ Lub neej kev pab cuam yog 2-10 lub sij hawm ntev dua cov organic membranes, txo nqi hloov;

★ Tso cai rau kev tu tshuaj nruj, ua kom yooj yim hauv kev tu, thiab cov flux yooj yim rov qab los tom qab ntxuav;

★ Qhov kev ua tau zoo yog yooj yim rov qab los tom qab muaj kuab paug thiab thaiv, tshem tawm cov nqi ntawm kev hloov daim nyias nyias los ntawm kev ua tsis tiav;

★ Cov txheej txheem ua ntej qis, txo tag nrho cov peev txheej thiab cov nqi khiav lag luam;

★ Kev kub siab sib txawv ntawm daim nyias nyias tau tso cai, yog li qhov kub thiab txias qhov dej ntws nce ntxiv;

★ Tsis muaj teeb meem membrane tawg, thiab kev tswj xyuas tsawg dua.

Ntxuav thiab concentration ntawm nano hmoov

Roj-dej sib cais (oilfield reinjection dej, kua tsim kev puas tsuaj rov tsim dua tshiab)

Cov khoom sib cais

Cov kua dej sib cais nrog cov ntsiab lus siab (mine dej, lom fermentation broth)

Cov kua dej sib cais nyob rau hauv ib puag ncig hnyav tshuaj (acid purification, nano hmoov catalyst rov qab)

Kev luam ntawv thiab dyeing dej khib nyiab thiab papermaking thiab pulp kev lag luam cov dej khib nyiab yog qhov tseem ceeb ntawm COD (chemical oxygen xav tau) cov pa phem. Piv nrog rau cov kev kho mob ib txwm siv, siv cov txheej txheem ceramic membrane ultrafiltration los cuam tshuam thiab lim COD thiab lignin muaj qhov khaws cia ntau dua, thiab tuaj yeem ua tiav ncaj qha rov qab thiab rov siv dua permeate.

Kev tsim cov txheej txheem ntawm cov cell photovoltaic, suav nrog kev ntxuav, etching thiab txheej, tsim cov kua qaub fluoride ntau cov dej khib nyiab vim yog siv hydrofluoric acid. Tuam Tshoj yog ib lub chaw tsim khoom loj ntawm cov cell photovoltaic, nrog ntau txhiab lub lag luam uas tsim cov kua qaub fluoride ntau cov dej khib nyiab txhua hnub.

Cov tshuaj fluoride concentration nyob rau hauv acidic fluoride-muaj cov dej khib nyiab ntawm photovoltaic lag luam feem ntau yog ntau pua txog txhiab micrograms ib liter, thiab pH tus nqi qis.

Kev kho cov thev naus laus zis muaj xws li tshuaj nag lossis daus, ion pauv, adsorption thiab kev sib cais ntawm daim nyias nyias.

chemical nag lossis daus muaj xws li reagent nag lossis daus thiab electrocoagulation nag lossis daus; adsorption muaj xws li biological adsorption, lub cev adsorption thiab tshuaj adsorption; membrane technology muaj xws li thim rov qab osmosis, electrodialysis thiab nanofiltration.
Ntawm cov thev naus laus zis no, txoj kev siv dav tshaj plaws yog calcium fluoride nag lossis daus, uas siv CaCl.₂thiab Ca(OH)₂raws li lub ntsiab chemical reagents.

Cov reagents no muab Ca²⁺teb rau F^–tsim cov calcium fluoride flocs hauv dej. Cov flocs yog precipitated li calcium fluoride sludge nyob rau hauv kev ua ntawm coagulants thiab flocculants.

Txawm li cas los xij, txoj kev no muaj ob qhov kev txwv loj: cov khoom tsim cov calcium fluoride sludge muaj ntau cov hlau hnyav, uas ua rau muaj kev pheej hmoo ntawm kev ua qias tuaj ib puag ncig, thiab ntxiv cov coagulants thiab complex muaj pes tsawg leeg ntawm cov sludge ua rau cov nqi kho mob siab, ua ub no impractical.

Tsis tas li ntawd, calcium fluoride muaj txiaj ntsig zoo siv nyob rau hauv thaj chaw photovoltaic thiab semiconductor thiab yog qhov tsis tshua muaj txiaj ntsig thiab tsis tuaj yeem txuas ntxiv.

Yog li ntawd, lub hom phiaj kev txhim kho ntawm photovoltaic wastewater kho tshuab yog kom txo qis los ntawm cov khoom, txo cov nqi khiav lag luam thiab txhim kho cov txiaj ntsig zoo ntawm calcium fluoride.

Cov tshuaj crystallization circulating granular fluidized txaj (CrystPFB) thev naus laus zis tuaj yeem ua rau calcium fluoride crystallization hauv dej.
Cov txheej txheem no tsis tsuas yog txo qhov concentration ntawm fluoride hauv dej, tab sis kuj tsim cov purity calcium fluoride ntau dua, txo cov tiam ntawm cov khoom lag luam, thiab nws cov teebmeem thiab cov txheej txheem tau txheeb xyuas dav dav.

Muaj kev tshawb fawb txog CrystPFB-induced calcium fluoride crystallization, tsom rau kev tshem tawm fluoride, induced crystallization mechanism, thiab calcium fluoride crystallization kinetics.

Txawm li cas los xij, cov tshuaj fluoride concentration hauv cov dej khib nyiab uas tau tshawb fawb feem ntau yog nyob nruab nrab ntawm 100 thiab 300 mg / L, thiab cov kev tshawb fawb feem ntau siv cov txheej txheem kuaj ntsuas.

Qee cov kws tshawb fawb kuj tau siv CrystPFB thev naus laus zis los tshem tawm cov tshuaj fluoride los ntawm cov dej tsis tshua muaj hauv ntiaj teb metallurgical khib nyiab, siv calcium thiab silica ua cov noob los ua kom cov calcium fluoride crystallization, thiab ua tiav cov txiaj ntsig rov qab ntau dua 90% ntawm qhov muaj zog ntawm 400 mg / L.

Lwm cov kws tshawb fawb tau tshawb fawb txog kev sib xyaw ua ke ntawm cov tshuaj los nag thiab CrystPFB ntawm cov tshuaj fluoride uas muaj cov dej khib nyiab siab, thiab muab piv rau cov tshuaj los nag thiab CrystPFB hauv kev kho cov tshuaj fluoride siab heev. Nws tau pom tias thaum cov tshuaj fluoride concentration qis dua 450 mg / L, CrystPFB tau pom qhov ua tau zoo tshaj plaws, nrog rau tag nrho cov kev tshem tawm ntawm 98%.

Hauv cov ntsiab lus, kev tshawb fawb ntxiv txog kev tshem tawm cov tshuaj fluoride los ntawm cov dej khib nyiab siab yog xav tau los kov yeej cov kev txwv ntawm cov tshuaj fluoride tsawg tsawg (<1000 mg/L) and small treatment scale (laboratory scale or small-scale experiments). In particular, acidic fluorine-containing photovoltaic wastewater has complex water quality and is difficult to treat.

Thaum cov effluent ammonia nitrogen thiab COD yog ib txwm, tag nrho nitrogen yog ib txwm siab los yog txawm tshaj tus qauv, qhia tias tag nrho cov nitrogen tshaj tus qauv nyob rau hauv lub effluent yog nyob rau hauv daim ntawv ntawm nitrate nitrogen, tsis ammonia nitrogen. Lub sijhawm no, koj tuaj yeem xav txog kev txhim kho cov txheej txheem nitrification thiab denitrification los hloov nitrate nitrogen rau hauv cov pa roj nitrogen. Hom teeb meem no tsis tshwm sim tab sis tsis nyuaj rau qee qhov chaw kho dej phwj tuaj. Qee zaum kho qhov tsis tuaj yeem ua tau raws li cov qauv.

01 Cov pa roj carbon ntau tsis txaus Lub theoretical C / N piv xav tau rau kev tshem tawm tag nrho nitrogen yog 2.86, tab sis hauv kev ua haujlwm tiag tiag, C / N (COD: TN) piv feem ntau tswj ntawm 4 ~ 6, uas feem ntau txhais tau tias tias tag nrho cov nitrogen tshem tawm tus nqi ntawm kev kho dej yog tsawg. Lub sijhawm no, C / N piv yuav tsum yog 4 ~ 6, thiab qhov tsim nyog carbon yuav tsum tau ntxiv. Nws tuaj yeem raug txiav txim siab raws li tus nqi denitrification, sludge ntau lawm, pib ceev thiab nitrite nitrogen tsub zuj zuj. Piv txwv li, cov piam thaj uas muaj cov tshuaj tiv thaiv qis tuaj yeem muab ntxiv ntawm qhov tsis tshua muaj siab ntawm nitrate nitrogen, thiab methanol thiab acetic acid nrog cov tshuaj tiv thaiv siab yuav tsum tau ntxiv ntawm qhov siab ntawm nitrate nitrogen.

02 Qhov sib piv reflow tsis tsim nyog. Qhov sib piv sab hauv rov qab qis dhau, thiab nitrate nitrogen tsis tuaj yeem ntws rov qab mus rau thaj tsam anoxic. Cov tshuaj tiv thaiv denitrification tsis tuaj yeem ua mus ib txwm, ua rau txo qis tag nrho cov kev tshem tawm nitrogen. Nyob rau lub sijhawm no, nyob rau hauv qhov kev pom zoo ntawm kev ua kom cov denitrification efficiency, ua ke nrog kev cuam tshuam ntawm DO thiab kev sib raug zoo ntawm cov nqi kev ua tau zoo, qhov sib piv sab hauv tuaj yeem tswj tau ntawm 200 ~ 400%.

03 Qhov chaw ua haujlwm ntawm lub pas dej denitrification raug puas tsuaj. Lub DO ntawm lub pas dej denitrification yog ntau dua 0.5, uas rhuav tshem qhov chaw anoxic, cia cov kab mob facultative heterotrophic nyiam siv oxygen rau cov metabolism. Nitrate nitrogen tsis tuaj yeem raug tshem tawm, ua rau tag nrho nce hauv TN. Yog hais tias lub internal reflow loj heev thiab ua rau ntau dhau DO yuav tsum tau nqa, lub internal reflow ratio yuav tsum tau kho los yog lub aeration ntawm lub internal reflow yuav muab tso tseg; Yog hais tias qhov kev ncua deb ntawm qhov nkag thiab dej saum npoo yog siab dhau, ua rau poob oxygenation, qhov siab qhov sib txawv yuav tsum raug txo.

Qhov concentration ntawm ammonia nitrogen yog siab tshaj qhov tshwm sim ntawm tag nrho cov nitrogen txiav txim
Raws li txoj cai, tag nrho cov nitrogen yuav tsum siab tshaj ammonia nitrogen, vim hais tias tag nrho cov nitrogen muaj xws li inorganic nitrogen (nitrate nitrogen, nitrite nitrogen, ammonia nitrogen) thiab ntau yam organic nitrogen, tab sis nyob rau hauv tiag tiag kev ua hauj lwm, cov ntsiab lus ntawm ammonia nitrogen yog siab tshaj tag nrho cov nitrogen. Ntawm lawv, impure reagent purity, tsis txaus lub sij hawm digestion, tsis zoo ntawm kev sim dej, thiab lwm yam tej zaum yuav yog lub ntsiab yog vim li cas rau cov ammonia nitrogen kom siab tshaj tag nrho cov nitrogen.

01 Qhov purity ntawm poov tshuaj persulfate reagent tsis txaus. Lub purity ntawm poov tshuaj persulfate reagent tsis txaus, uas ua rau ib tug siab tag nrho cov nitrogen dawb paug tus nqi thiab ib tug me me nqi ntsuas. Tag nrho cov kev tshawb nrhiav nitrogen thiab kev tsom xam muaj cov kev cai nruj heev ntawm cov poov tshuaj persulfate reagent. Cov tshuaj analytical ntshiab poov tshuaj persulfate siv hauv chav kuaj yuav tsum muaj cov ntsiab lus nitrogen tsawg dua lossis sib npaug li 0.0005%. Txawm li cas los xij, vim qhov sib txawv ntawm qhov zoo ntawm cov tshuaj reagents uas tsim los ntawm cov tuam txhab sib txawv thiab cov khoom siv, cov ntsiab lus nitrogen feem ntau tsis ua raws li qhov yuav tsum tau ua, ua rau muaj tus nqi tag nrho nitrogen dawb paug thiab qhov ntsuas me me. Tsuas muaj ob txoj hauv kev los daws qhov teeb meem no: ntxuav lossis hloov cov reagent. Potassium persulfate uas tsis tshua muaj purity tuaj yeem ua kom huv ua ntej siv, tab sis vim yog lub chaw kuaj mob thiab qhov tsis muaj zog ntawm cov poov tshuaj persulfate rau qhov kub siab tshaj 50 degree, nws raug nquahu kom siv cov qib siab ntshiab reagents los yog cov poov tshuaj persulfate.

02 Lub sij hawm zom zaub mov tsis txaus lossis tsis zoo sealing Hauv kev xyaum, thaum lub sij hawm zom zaub mov ntawm tag nrho cov nitrogen tsis txaus, poov tshuaj sulfate yuav hloov tsis tiav, uas ua rau tsim cov nitrate nitrogen thiab nitrite nitrogen, uas ua rau ammonia nitrogen cov ntsiab lus hauv dej phwj tuaj. ho siab tshaj tag nrho cov ntsiab lus nitrogen. Tsis tas li ntawd, nyob rau hauv dav dav, thaum lub sij hawm sim, vim tsis muaj tej yam kev mob, cov hlab ntsha, digestive ib ntsuj av tau thiab lwm yam kev sim cov cuab yeej siv tsis tau kiag li kaw. Yog li ntawd, cov ammonium ions oxidized thaum lub sij hawm digestion yog hloov dua siab tshiab rau hauv ammonia gas nyob rau hauv lub siab kub thiab tso tawm rau hauv cov huab cua, uas ua rau tag nrho cov nitrogen cov ntsiab lus ntawm cov qauv nrog siab ammonia nitrogen cov ntsiab lus tsuas yog muaj ib feem ntawm ammonia nitrogen, uas. yog qis dua ammonia nitrogen cov ntsiab lus.

03 Qhov zoo ntawm kev sim dej tsis zoo thiab cov ntsiab lus ammonia yog qhov siab. Cov dej tsis muaj ammonia siv rau hauv qhov kev sim yog cov kab mob thiab muaj cov ntsiab lus ammonia siab heev, uas yuav ua rau muaj txiaj ntsig zoo hauv qhov kev sim. Yog tias ammonia muaj nyob hauv dej thaum lub sijhawm teeb tsa, nws yuav cuam tshuam rau kev txiav txim siab tag nrho cov nitrogen. Yog tias cov dej muaj nitrogen thaum npaj cov txheej txheem kev daws teeb meem, qhov nqus ntawm cov qauv nkhaus yuav siab dua tus nqi tiag tiag. Nyob rau hauv txoj kev no, thaum kuaj cov qauv dej tiag tiag, ntsuas tus nqi ntawm tag nrho cov nitrogen yuav qis dua tus nqi tiag tiag. Feem ntau, cov dej distilled tshiab tuaj yeem ua tiav ob zaug thiab cov distillate hauv nruab nrab tuaj yeem raug xaiv los ua cov dej sim rau kev kuaj ammonia nitrogen. Tau kawg, nws raug pom zoo tias cov chaw sim nrog cov xwm txheej siv dej ultrapure.

Vim li cas thiaj tsis muaj kev hloov pauv lossis txawm tias qis ammonia nitrogen hauv lub zog, tab sis ammonia nitrogen nyob rau hauv effluent yeej ib txwm siab? Qhov tseeb, nws yog ib qho ua rau ammonia nitrogen nyob rau hauv effluent kom siab tshaj qhov muaj zog hauv kev kho dej phwj. Feem ntau hais lus, yog tias tsis muaj qhov txawv txav hauv ammonia nitrogen hauv qhov muaj txiaj ntsig tab sis ammonia nitrogen hauv cov dej ntws tau nce lossis siab dua tus qauv, ces cov tshuaj tiv thaiv nitrification yuav tsum raug txwv thiab qee cov kauj ruam hauv cov txheej txheem denitrification tsis tiav.

01 Cov pa oxygen tsawg hauv lub pas dej aerobic tuaj yeem tshwm sim los ntawm qhov thaiv ntawm lub taub hau aeration, uas tsis tuaj yeem ua rau aerated lossis nplawm. Sij hawm dhau mus, tsis txaus cov pa oxygen yuav txo qis qhov nruab nrab ntawm tag nrho lub pas dej aerobic, ua rau ammonia nitrogen hauv cov dej ntws tawm kom dhau tus qauv nrog rau COD. Yog li ntawd, lub aeration system yuav tsum tswj kom txaus aeration ntim rau ib lub sij hawm ntev, thiab tus neeg teb xov tooj yuav tsum tsis tu ncua xyuas cov hauj lwm ntawm lub aeration tank chaw.

02 Ammonification ntau dua nitrification. Feem ntau, tag nrho cov nitrogen hauv cov dej khib nyiab feem ntau yog ammonia nitrogen, thaum nyob rau hauv qee cov dej khib nyiab (xws li cov dej khib nyiab amino acid), cov ntsiab lus tseem ceeb ntawm tag nrho cov nitrogen yog cov organic nitrogen. Organic nitrogen yog hloov mus rau hauv ammonia nitrogen nyob rau hauv qhov kev txiav txim ntawm ammonifying cov kab mob, ua rau muaj kev nce hauv ammonia nitrogen hauv lub cev. Thaum cov organic nitrogen cov ntsiab lus nyob rau hauv lub influent kuj yog siab, yog hais tias tus ammonia cov tshuaj tiv thaiv tus nqi siab tshaj cov tshuaj tiv thaiv nitrification tus nqi, cov ammonia nitrogen tsim yuav siab tshaj ammonia nitrogen nitrified, yog li tag nrho cov nyiaj ntawm ammonia nitrogen yuav nce, thiab nws yuav sib sau thiab sib tov rau hauv cov dej ntws, uas kuj yog ib qho ntawm cov laj thawj vim li cas ammonia nitrogen nyob rau hauv cov effluent yog siab dua li cov influent.

03 Kev taw qhia txog cov nitrogen ntxiv hauv cov txheej txheem dej phwj tuaj Cov ammonia nitrogen hauv cov effluent yog siab dua li ntawm cov influent, uas pom tseeb tsis ua raws li txoj cai ntawm kev txuag cov teeb meem. Nws yog qhov zoo tshaj plaws uas ammonia nitrogen los ntawm lwm yam sib xyaw hauv cov txheej txheem dej phwj tuaj. Kev sib ntxiv ntawm cov pa roj carbon ntau dhau, kev suav tsis raug ntawm qhov sib ntxiv, thiab kev siv cov dub PAC nplua nuj nyob rau hauv ammonia nitrogen yuav qhia ntxiv nitrogen rau hauv cov dej phwj tuaj kho, ua rau cov ammonia nitrogen nyob rau hauv cov effluent siab dua li cov influent.

04 Lub hnub nyoog sludge tsis txaus Lub voj voog ntawm cov kab mob nitrifying yog ntev dua li cov kab mob aerobic feem ntau. Yog tias lub hnub nyoog sludge luv dua li lub voj voog tiam, tus naj npawb ntawm cov kab mob nitrifying yuav tsis txaus, qhov ua tau zoo denitrification yuav raug txo, thiab ammonia nitrogen yuav nce. Nyob rau lub sijhawm no, nws yog ib qho tsim nyog los txo cov sludge tawm thiab nce rov qab ntws mus txuas ntxiv lub hnub nyoog sludge, lossis ntxiv tib hom sludge los nrhiav txoj hauv kev los tsim kom muaj cov pej xeem kom zoo dua rau cov kab mob nitrifying. Tsis tas li ntawd, sludge aging, lom, thiab o ua rau lub peev xwm degradation ntawm biological denitrification tom qab sludge disintegration yuav txo tau zoo heev. Nrog rau qhov tsis muaj zog ntawm sludge concentration thiab kev ua haujlwm lom neeg, ammonia nitrogen tshem tawm tus nqi txo qis heev, ua rau nws qis dua li qib qub, thiab tseem yuav ua rau cov ammonia nitrogen hauv cov dej ntws tawm kom siab dua cov ammonia nitrogen hauv lub zog.

Cim npe nrov: Tuam Tshoj inorganic tubular membrane manufacturers, lwm tus neeg, Hoobkas