1. Kev Paub Txog Ozone Basic
Ozone, nrog rau cov mis molecular O3, yog ib qho allotrope ntawm oxygen (O2). Ib qho ozone molecule muaj peb lub pa oxygen atoms, ib qho yog txuas nrog rau ob los ntawm ib daim ntawv cog lus. Ozone yog hailed li "ntsuab tshuaj," ib tug muaj zog oxidant nrog plaub lub luag hauj lwm tseem ceeb: sterilization, decolorization, oxidation, thiab deodorization. Nws kuj boasts qhov zoo xws li tsis muaj residue thiab tsis muaj pa phem thib ob, ua rau nws ib puag ncig tus phooj ywg ntsuab industrial raw khoom.
Ozone muaj zog oxidizing tsis tshua muaj zog, nrog lub peev xwm redox ntawm 2.07 mV. Ozone oxidizes organic teeb meem nyob rau hauv ob txoj kev: thawj, ozone molecules xaiv oxidize organic teeb meem ncaj qha, piv txwv li, ncaj qha oxidation, tab sis cov tshuaj tiv thaiv tus nqi kuj qeeb; thib ob, nws sai sai oxidizes organic teeb meem uas tsis yog - xaiv los ntawm hydroxyl radicals (·OH) generated los ntawm nws tus kheej decomposition, piv txwv li, indirect oxidation. Hauv cov tshuaj tiv thaiv dej tiag tiag, qhov ua tau zoo ntawm ozone hauv kev tshem tawm cov organic yog qhov zoo tshaj plaws ntawm oxidation ncaj qha thiab tsis ncaj, thiab qhov uas ob qhov kev cuam tshuam no tshwm sim nyob ntawm cov tshuaj tiv thaiv sib txawv. Indirect oxidation tseem hu ua advanced oxidation technology.
2. Kev npaj Ozone
Ozone tuaj yeem npaj siv ntau txoj hauv kev. Hauv thaj chaw kho dej, siab -voltage ntsiag to tso tawm feem ntau yog siv. Cov khoom siv raw rau kev tsim ozone feem ntau yog cua lossis oxygen. Thaum huab cua siv los ua cov pa roj, cov ntsiab lus ozone tsuas yog kwv yees li 1%, thaum siv cov pa oxygen, ozone concentration tuaj yeem ncav cuag 10% (los ntawm huab hwm coj) lossis siab dua.
3. Advanced Ozone Oxidation Technology
Ib qho ozone oxidation tshuab muaj cov kev txwv tseem ceeb: ib qho ozone tsis tuaj yeem oxidize qee cov organic recalcitrant, xws li chloroform; Ib qho ozone oxidation tsis tuaj yeem rhuav tshem cov organic teeb meem rau hauv cov pa roj carbon dioxide thiab dej, thiab nws yog ib qho nyuaj rau kev ua tau zoo ntawm COD tshem tawm efficiency. Advanced ozone oxidation thev naus laus zis, tseem hu ua kev sib sib zog nqus oxidation thev naus laus zis, yog tus cwj pwm los ntawm kev tsim cov oxidizing hydroxyl radicals (·OH) (lub peev xwm redox ntawm hydroxyl radicals (·OH) yog 2.80V, thib ob tsuas yog fluorine). Nyob rau hauv cov kev mob tshwm sim xws li kub siab, kub siab, hluav taws xob, suab, lub teeb irradiation, thiab catalysts, nws oxidizes loj, recalcitrant organic molecules rau hauv qis -toxicity los yog non- lom me me molecules.
1) Photocatalytic Ozone Oxidation Technology
Photocatalytic ozone oxidation tsis siv ozone kom ncaj qha cuam tshuam nrog cov organic teeb meem. Hloov chaw, nws siv cov active Secondary oxidant (·OH) tsim los ntawm decomposition ntawm ozone nyob rau hauv ultraviolet lub teeb los oxidize organic teeb meem. Cov tshuaj tiv thaiv ntawm ozone thiab organic teeb meem ib leeg yog xaiv thiab tsis tuaj yeem decompose organic teeb meem rau hauv carbon dioxide thiab dej. Txhawm rau txhim kho oxidation tus nqi thiab kev ua haujlwm ntawm ozone, lwm yam kev ntsuas yuav tsum tau txais los txhawb kev decomposition ntawm ozone los ua kom muaj zog · OH.
2) Homogeneous Catalytic Ozone Oxidation Technology
Cov catalysts siv hauv homogeneous catalytic ozonation feem ntau yog cov hlau hloov pauv, xws li Fe(II), Mn(II), Ni(II), Co(II), Cd(II), Cu(II), Ag(I), Cr(III), thiab Zn(II). Precise (micro-dose, ppb qib) ntxiv ntawm ozone-catalyzing ions rau cov dej khib nyiab yog ua tiav los ntawm kev tswj fais fab, ua kom tiav cov tshuaj tiv thaiv oxidation siab heev uas tsim cov hydroxyl radicals kom tshem tawm cov pa phem ntawm cov dej khib nyiab.
3) Heterogeneous Catalytic Ozone Oxidation Technology
Cov thev naus laus zis no feem ntau siv cov khoom thauj khoom oxidant (feem ntau ua los ntawm alumina lossis hluavtaws zeolite). Nyob rau hauv qhov kev txiav txim ntawm lub catalyst, ozone decomposes tsim oxidizing hydroxyl radicals (·OH), yog li degrading organic pollutants nyob rau hauv dej.
4. Daim ntawv thov tiag
Lub chaw kho dej khib nyiab hauv nroog yog tsim los tswj 100,000 tons / hnub, tab sis nws qhov peev xwm kho tau yog 90,000 tons / hnub. Txhawm rau kom ua tau raws li COD emission qauv (tsawg dua lossis sib npaug li 40mg / L), homogeneous catalytic ozone oxidation technology yog siv, siv peb lub tshuab hluav taws xob ozone (txhua qhov muaj peev xwm ntawm 42kg / h, ob qho kev ua haujlwm thiab ib qho ntawm kev tos txais). Cov txheej txheem ntws yog raws li nram no: ozone generator → generates ozone gas → thauj nws los ntawm pipelines mus rau lub dav hlau twj tso kua mis inlet → dissolves nyob rau hauv cov dej khib nyiab los ntawm lub dav hlau txhaj tshuaj → generates · OH nyob rau hauv qhov kev txiav txim ntawm ib homogeneous catalyst → ua kom tiav cov oxidation cov tshuaj tiv thaiv nyob rau hauv lub ozone catalytic oxidation tank.
1) COD Degradation thiab Decolorization Performance
Kev kho dej khib nyiab muaj peev xwm: 90,000 tons / hnub. Tam sim no, ib lub tshuab hluav taws xob ozone tab tom ua haujlwm, teeb tsa ntawm 40 kg / h, nrog qhov tseeb ntawm 34 kg / h (ozone flow rate x ozone concentration). Qhov koob tshuaj ozone yog 9.1 mg / L. Qhov no txo qis COD los ntawm 45 mus rau 30 mg / L thiab xim los ntawm 40 mus rau 5, ua tau raws li effluent raws "Major Water Pollutant Discharge Standard for Urban Wastewater Treatment Plants" (DB33/2169-2018).
2) Kev siv hluav taws xob
Thaum ozone paub txog nws cov khoom ntsuab thiab ib puag ncig tus phooj ywg, kev siv hluav taws xob siab thiab cov nqi khiav lag luam cuam tshuam nrog nws cov khoom lag luam yog qhov tsis lees paub. Thaum siv huab cua los ua cov pa roj, kev siv hluav taws xob yog kwv yees li 20 kWh / kg ozone; Thaum siv cov pa oxygen raws li cov pa roj, lub zog noj yog kwv yees li 10 kWh / kg ozone. Raws li qhov tseeb ntawm- qhov chaw ua haujlwm, kev siv hluav taws xob yog 13 kWh / kg ozone nyob rau lub caij ntuj sov thiab 11 kWh / kg ozone nyob rau lub caij ntuj no. Vim yog qhov kub sab nraum zoov thaum lub caij ntuj sov, lub chiller yuav tsum tau ua kom txias lub tshuab hluav taws xob ozone, thaum lub caij ntuj no, tsuas yog lub phaj kub hloov pauv yuav tsum tau qhib kom ua haujlwm zoo.