Yiziphi izinto ezi-5 ze-reverse osmosis membrane ongayazi?

01

I-Cellulose acetate membrane (i-CA membrane sheet)

I-Cellulose acetate iyizinhlayiyana ezimhlophe ezixegayo noma impushana ene-fibrous, ayinaphunga, ayinabuthi, azinzile, futhi ine-hygroscopic kakhulu. Njengamanje iwumsebenzi ofundwa kabanzi we-reverse osmosis membrane. Nakuba i-cellulose acetate iyinto enhle ye-membrane, i-COOR echungechungeni layo lamangqamuzana yenza kube lula ukukhiqiza i-hydrolyze ngaphansi kwezimo zokushisa eziphezulu kanye ne-acid-base, futhi i-alkaline noma i-acidic hydrolysis ingabangela ukuthi iqembu le-acetyl linyamalale. Ngakho-ke, ukusetshenziswa kwezinto ezihlanzekile ze-CA kungaphansi kwemikhawulo ethile.

02

Ifilimu ye-polyamide enuka kamnandi (i-PA membrane sheet)

Ama-polyamides anuka kamnandi asetshenziswa kakhulu embonini ye-membrane ngenxa yokuzinza kwawo ngokomzimba namakhemikhali, ukumelana nama-alkali aqinile, ama-ester kawoyela, nezinyibilikisi ze-organic, namandla amahle emishini. Kodwa-ke, ngenxa yemvelo ekhokhiswayo yolwelwesi lwe-PA olusebenza ku-pH 6-10, izinhlayiya emanzini zijwayele ukufakwa phezu kolwelwesi, okunciphisa ukuphila kwayo kwesevisi.

03

I-Chitosan membrane (ishidi le-membrane ye-CS)

I-Chitosan (CS) itholakala ngokukhipha amaqembu e-acetyl kuma-molecule e-chitosan. Inemithombo eminingi ehlukahlukene, izici ezinhle zokwenza ifilimu kanye ne-biocompatibility, futhi kulula ukuyishintsha ngamakhemikhali. Ngenxa yesakhiwo samangqamuzana, amanzi ahlanzekile asetshenziswa ku-osmosis ehlehlayo angakha amabhondi e-hydrogen aqinile nama-molecule wamanzi, futhi ikhono lawo lokususa ama-ion ensimbi yomhlaba ane-alkali linamandla. Ngakho-ke, iphakeme kune-CA membranes kanye ne-polyamide membranes futhi ibhekwa njengento ethembisa kakhulu ye-membrane, ethole ukunakwa okubanzi emhlabeni jikelele. I-Cs reverse osmosis membrane inokuguquguquka okuphezulu nokukhetha, futhi inomthelela omuhle wokususwa kusawoti wensimbi we-divalent. Ngenxa yokuqina kwayo kwe-alkali ukumelana nokumelana ne-asidi ngemva kokuphambana, ulwelwesi lwe-Cs alukwazi kalula ukukhiqiza ama-microorganisms futhi ngokuvamile lusetshenziswa njengama-osmosis ahlehlayo ukuze athambise amanzi aqinile.

04

I-Polyphenylene reverse osmosis membrane

Izinto ze-polyphenylene ezifana ne-polybenzimidazole (PBD) ne-polyphenylene oxide (PPO) nazo zidonse ukunaka okusabalele ngenxa yokumelana kwazo nezinga lokushisa eliphezulu, ukumelana ne-asidi ne-alkali, futhi zingashintshwa ukuze kutholwe izinto ezingcono zefilimu ezacile.

05

Amanye ama-membrane e-osmosis ahlangene ahlangene

I-composite reverse osmosis membrane iwuhlobo lolwelwesi oluhlanganisa ungqimba oluncane, oluminyene lwezinto ezihlukene nemisebenzi ekhethekile yokuhlukanisa ku-substrate esekelayo enezimbotshana. Inezinga eliphezulu lokuhlukaniswa kwe-solute kanye nezinga lokungena kwamanzi kune-membrane edidiyelwe, ngakho-ke inesabelo semakethe esingaphezu kwama-90%. Njengamanje, ulwelwesi oluhlanganisiwe lwe-osmosis lusetshenziswe kabanzi emikhakheni efana ne-petrochemicals, electronics, textiles, light industry, metallurgy, medicine, biotechnology, ukudla, nokuvikelwa kwemvelo.