Nrog rau kev nce qib txuas ntxiv hauv kev kho dej haus thoob ntiaj teb, rov qab osmosis (ro) whreplranes lub luag haujlwm hauv dej hiav txwv desalination thiab kev kho dej noo noo. Txawm li cas los xij, raws li cov kev pabcuam lub neej nce, membrane fouling thiab tshuaj tu ua rau poob rau kev coj ua, ua rau ib puag ncig thiab cov peev txheej rov qab. Nws yog kwv yees tias 2025, lub ntiaj teb tus naj npawb ntawm discarded {1}} nti ro membrane ntsiab tshaj 2 lab. Txhawm rau kom lawv rov qab siv dua tshiab tuaj yeem kho tau siv cov thev naus laus zis oxidatation, uas tuaj yeem faib ua plaub txoj hauv kev loj.
1.Direct oxidation
Cov khib nyiab RE cov kev tso tawm ncaj qha rau hauv cov txheej txheem oxidizing, qhov twg los ntawm polyamide (PA) xaiv tau thiab hloov dua tshiab lossis hloov dua tshiab (UF) cov ntaub nyias nyias.
Cov neeg nyiam saib xyuas cov neeg sawv cev: Sodium hypochlorite (Naclo), poov tshuaj permanganate (kmno₄), hydrogen peroxide (h hydrO₂).
Cov Tshawb Nrhiav Tseem Ceeb:
NaClO achieves efficient degradation through amide bond cleavage under alkaline conditions (pH>10), thiab kev siv oxid olidation (PPM WAS zoo sib xyaw nrog lub sijhawm kho.
KMNO₄ qhia zoo dua oxidation kev ua tau zoo nyob rau hauv acidic tej yam kev mob, tab sis nws cov tshuaj tiv thaiv mechanism xav tau kev tshawb xyuas ntxiv.
H₂o₂ relies ntawm Fenton cov tshuaj tiv thaiv los tsim dawb radicals (Ohiston uas tawm tsam cov txheej PA thiab yuav tsum muaj hlau ion catalysis.
2.ProreCortment + Oxidation
Txhawm rau chaw nyob rau membrane cov kuab paug (piv txwv li cov organics, colloids, inorgent pre-soaking yog siv los rov ua tus membrane kev ua tiav ua ntej kev kho mob oxidation.
Acid-Tuos: Tshem tawm cov paug xws li Al³n⁺ thiab Si, Tiv Thaiv Tshaj Tawm Kev Txom Nyem Thaum Oxidation.
Pre-soaking: soaking hauv ethanol los yog isopropanol pab kho membrane pores uas tsaus muag vim tias ua kom qhuav oxidation efficiency.
3. Snesgistic Oxidation
Sib txuas ntawm lub cev lossis tshuaj lom neeg los txhim kho cov oxidation efficiency:
Ultrasound-pab: 40 kHz ultrasound ua ke nrog kmno₄ tuaj yeem txo lub sijhawm kho txij hnub 165 teev mus rau 15 feeb, nrog kev ua haujlwm rau hauv flux.
Hlau Ion Catalysis: Ce²⁺, Fe²⁺, thiab lwm yam.
Duab-Fenton Txheej Txheem: UV teeb ua ke nrog Naclo sai sai degrades pa txheej ntawm dawb tshaj plaws radical nres.
4. Oxidation + Tom Qab Kev Kho Mob
Tom qab oxidation, kev ua tau zoo tuaj yeem txhim kho ntxiv los ntawm kev hloov kho lossis kev tsim kho ntawm cov txheej xaiv:
Cov txheej txheej saum npoo: Hydrophilic cov ntaub ntawv xws li tannic acid (Ta) thiab sericin yog siv los kho cov ncej tshij, txhim kho cov tshuaj tiv thaiv kev tiv thaiv.
Interfacial polymerization: kho dua tshiab nf lossis UF xaiv cov khaubncaws sab nraud povtseg ntawm kev ua kom tiav kev ua haujlwm.
Cov Ntawv Thov Siv
Kev haus dej haus: ultrafiltration membranes resenerated los ntawm Naclo oxidation tau raug thov rau cov chaw dej nyob hauv chaw tej thaj chaw deb, nrog cov txheej txheem dej tej thaj chaw deb noj.
Landfill leachate kev kho mob: regenerated mis tau ua rau muaj kev ruaj khov flux thiab cov haujlwm qis}} Lub hlis sim kev sim.
Kev siv Wastewater rov qab yuav: OXIDIVATENCATANCATENCATION ua tiav ib qho 96% tus nqi tsis kam thiab txhim kho ntsev sib cais efficiency.
Txawm hais tias ntau txoj kev kawm tau ua rau hauv cov ntawv thov kev ua tiav, xws li cov txheej txheem tseem ceeb thiab tseem ceeb ntawm cov kev ua qias tuaj ntawm cov khoom muaj kuab paug ntawm tus kheej kev ua tau zoo.
Cov oxidative recycling ntawm cov khib nyiab Ro Mi membranes tsis tsuas yog ua rau cov tswv yim dej ntxiv tab sis kuj tseem muab cov tswv yim tshiab ntawm kev kho cov dej. Nrog kev txhim kho kev txuas ntxiv ntawm oxidation thev naus laus zis thiab kev sib txuam ntawm cov kev daws teeb meem, nws yog pab tsav kev txhim kho kev loj hlob tseem ceeb.
