Kev tsim kho ntawm RO Kev Kho Dej Dej

Txoj kev loj hlob ntawm RO daim nyias nyias tau kwv yees mus txog peb theem. Feem ntau siv RO membrane cov ntaub ntawv hauv kuv lub tebchaws feem ntau suav nrog cellulose acetate membrane (CA membrane), aromatic polyamide membrane (PA membrane) thiab chitosan membrane (CS membrane). CA zaj duab xis yog cov khoom siv zaj duab xis thaum ntxov, uas tsis muaj ntxhiab tsw, tsis muaj ntxhiab, tsis muaj tshuaj lom, ruaj khov rau lub teeb, thiab muaj zog hygroscopicity. Txawm li cas los xij, CA zaj duab xis muaj cov tshuaj tsis zoo, thermal stability thiab compactness, thiab yooj yim degrade. PA membrane yog feem ntau siv RO membrane hauv kev lag luam. Nws muaj qhov zoo ntawm lub cev thiab tshuaj stability, muaj zog alkali tsis kam, roj ester, organic hnyav tsis kam, thiab zoo txhua yam muaj zog. Txawm li cas los xij, PA membrane raug them, thiab cov khoom hauv dej tau yooj yim tso rau ntawm daim nyias nyias, ua rau muaj kuab paug hauv daim nyias nyias. , shorten lub neej kev pab cuam. CS daim nyias nyias yog cov khoom siv polymer membrane, tsis muaj tshuaj lom, tsis muaj kev phiv, tshuaj tua kab mob, thiab muaj peev xwm tshem tawm alkaline ntiaj teb hlau ions. Nws yog RO membrane zoo dua rau cov dej tawv muag. Nws yog ib yam khoom uas muaj peev xwm heev. zoo saib heev.

Kev tsim kho tsis ntev los no hauv RO daim nyias nyias muaj xws li cov kab mob tsis muaj kab mob, hybrid daim nyias nyias, thiab cov ntaub nyias nyias tshiab. Raws li txoj cai, inorganic daim nyias nyias muaj siab ion cuam tshuam kev ua tau zoo, tab sis tus nqi siab thiab kev npaj hnyav tsis zoo rau kev lag luam; hybrid membranes muab cov txiaj ntsig zoo ntawm cov khoom siv organic thiab cov khoom siv tsis zoo, thiab muaj kev ua haujlwm zoo hauv kev txhim kho daim nyias nyias kev ua tau zoo thiab tiv thaiv kev ua qias tuaj. Daim ntawv thov kev cia siab muaj peev xwm txhim kho tau zoo, thiab xav tau kev tshawb fawb theoretical ntxiv; Kev npaj ntawm cov organic membranes tshiab tseem nyob rau hauv thawj theem, lub hom phiaj tseem ceeb yog los txhim kho cov membrane flux thiab tshuaj stability, thiab tsis muaj kev tawg tau tiav.