Ndechipi chezvinhu zvishanu zve reverse osmosis membranes iwe chausingazive?
01
Cellulose acetate membrane (CA membrane sheet)
Cellulose acetate ichena yakasununguka particle kana fibrous powder, isina kunhuhwirira, isina chepfu, yakagadzika chiedza, uye yakanyanya hygroscopic. Parizvino inodzidza zvakanyanya reverse osmosis membrane zvinhu. Kunyangwe cellulose acetate iri yakanaka membrane zvinhu, iyo - COOR mune yayo molecular cheni inoita kuti zvive nyore kuita hydrolyze pasi pekushisa kwakanyanya uye acid-base mamiriro, uye alkaline kana acidic hydrolysis inogona kuita kuti boka reacetyl rinyangarika. Naizvozvo, kushandiswa kwezvinhu zvakachena zveCA zvinoiswa kune zvimwe zvipimo.
02
Inonhuhwirira polyamide firimu (PA membrane sheet)
Inonhuhwirira polyamides inoshandiswa zvakanyanya muindasitiri yemembrane nekuda kwekugadzikana kwavo kwemuviri uye kemikari, kuramba kune yakasimba alkalis, oiri esters, uye organic zvinonyungudutsa, uye yakanaka mechanical simba. Nekudaro, nekuda kwekuchajwa hunhu hwePA membranes inoshanda papH 6-10, zvimedu mumvura zvinotarirwa kuisa pamusoro pe membrane, zvichideredza hupenyu hwayo hwesevhisi.
03
Chitosan membrane (CS membrane sheet)
Chitosan (CS) inowanikwa nekubvisa mapoka eacetyl kubva kumamolekemu echitosan. Iine huwandu hwakasiyana hwezvinyorwa, zvakanaka zvekugadzira firimu uye biocompatibility, uye iri nyore kugadzirisa kemikari. Nekuda kwechimiro chayo chemolecular, mvura yakachena inoshandiswa mureverse osmosis inogona kuumba yakasimba hydrogen zvisungo nemamorekuru emvura, uye kugona kwayo kubvisa alkaline pasi simbi ions yakasimba. Naizvozvo, yakakwirira kune CA membranes uye polyamide membranes uye inoonekwa seyakavimbiswa zvakanyanya membrane zvinhu, iyo yakagamuchira kutariswa kwakapararira pasi rese. Cs reverse osmosis membrane ine yakakwira flux uye kusarudza, uye ine yakanaka yekubvisa maitiro pane divalent simbi munyu. Nekuda kwekusimba kwayo alkali kuramba uye asidi kuramba mushure mekuyambuka, Cs membranes haikwanise kubereka tupukanana uye inowanzoshandiswa se reverse osmosis membranes yekupfavisa mvura yakaoma.
04
Polyphenylene reverse osmosis membrane
Polyphenylene zvinhu zvakaita sepolybenzimidazole (PBD) uye polyphenylene oxide (PPO) zvakare yakakwezva kutarisisa kwakawanda nekuda kwekunyanya kupisa kwekushisa, asidhi uye alkali kuramba, uye inogona kugadziridzwa kuti iwane zviri nani zvitete zvemufirimu.
05
Mamwe maumbirwo akaitwa reverse osmosis membranes
Composite reverse osmosis membrane imhando yemembrane inosanganisa yakatetepa, dense layer yezvakasiyana zvinhu zvine mabasa ekuparadzanisa akakosha pane porous support substrate. Iyo ine yakakwira solute kupatsanurwa mwero uye chiyero chekupinda kwemvura pane yakasanganiswa membranes, uye nekudaro ine musika wemugove weinopfuura 90%. Parizvino, composite reverse osmosis membranes yakashandiswa zvakanyanya muminda senge petrochemicals, zvemagetsi, machira, chiedza indasitiri, simbi, mushonga, biotechnology, chikafu, uye kuchengetedza kwezvakatipoteredza.