ʻO wai o nā mea 5 o nā membrane reverse osmosis āu i ʻike ʻole ai?
01
ʻO ka membrane cellulose acetate (CA membrane sheet)
ʻO ka cellulose acetate kahi mea keʻokeʻo keʻokeʻo a i ʻole ka pauka fibrous, ʻaʻohe ʻala, ʻaʻohe mea ʻawaʻawa, paʻa māmā, a hygroscopic nui. ʻO ia kahi mea i aʻo nui ʻia i kēia manawa o ka membrane reverse osmosis. ʻOiai he mea membrane maikaʻi ka cellulose acetate, ʻo ka - COOR i loko o kāna kaulahao molecular e maʻalahi ka hydrolyze ma lalo o ke kiʻekiʻe o ka mahana a me nā kūlana acid-base, a hiki i ka hydrolysis alkaline a i ʻole acidic ke kumu e nalowale ai ka hui acetyl. No laila, pili ka hoʻohana ʻana i nā mea CA maʻemaʻe i kekahi mau palena.
02
Kiʻiʻoniʻoni polyamide ʻaʻala (pa membrane PA)
Hoʻohana nui ʻia nā polyamides aromatic i ka ʻoihana membrane ma muli o ko lākou kūpaʻa kino a me ke kemika, kūʻē i nā alkalis ikaika, nā ʻaila hinu, a me nā mea hoʻoheheʻe organik, a me ka ikaika mechanical maikaʻi. Eia nō naʻe, ma muli o ke ʻano i hoʻopiʻi ʻia o nā membrane PA e hana ana ma ka pH 6-10, hiki i nā ʻāpana i ka wai ke waiho ma luna o ka ʻili o ka membrane, e hōʻemi ana i kona ola lawelawe.
03
ʻO ka membrane chitosan (CS membrane sheet)
Loaʻa iā Chitosan (CS) ma ka wehe ʻana i nā pūʻulu acetyl mai nā molela chitosan. Loaʻa iā ia kahi ākea ākea o nā kumu, nā waiwai hana kiʻiʻoniʻoni maikaʻi a me ka biocompatibility, a maʻalahi ke hoʻololi kemika. Ma muli o kona ʻano mole, hiki i ka wai maʻemaʻe i hoʻohana ʻia i ka reverse osmosis ke hana i nā paʻa hydrogen ikaika me nā molekole wai, a ikaika kona hiki ke wehe i nā ion metala honua alkaline. No laila, ʻoi aku ka maikaʻi ma mua o nā membrane CA a me nā membrane polyamide a ua manaʻo ʻia ʻo ia kahi mea membrane hoʻohiki maikaʻi loa, i loaʻa i ka manaʻo ākea ma ka honua. Cs reverse osmosis membrane he kiʻekiʻe ka flux a me ke koho, a he hopena maikaʻi ka wehe ʻana i nā paʻakai metala divalent. Ma muli o kona kūpaʻa alkali ikaika a me ka pale ʻana i ka waika ma hope o ka hoʻopili ʻana, ʻaʻole hiki i nā membrane Cs ke hana maʻalahi i nā microorganism a hoʻohana pinepine ʻia e like me nā membrane reverse osmosis no ka hoʻomaʻamaʻa ʻana i ka wai paʻakikī.
04
Polyphenylene reverse osmosis membrane
ʻO nā mea polyphenylene e like me ka polybenzimidazole (PBD) a me ka polyphenylene oxide (PPO) ua hoʻokipa nui ʻia ma muli o ko lākou kūpaʻa kiʻekiʻe o ka wela, ka waikawa a me ke kūpaʻa alkali, a hiki ke hoʻololi ʻia no ka loaʻa ʻana o nā mea kiʻiʻoniʻoni lahilahi.
05
ʻO nā membrane reverse osmosis ʻē aʻe
ʻO ka membrane reverse osmosis kahi ʻano membrane e hoʻohui i kahi ʻāpana lahilahi a paʻapū o nā mea like ʻole me nā hana hoʻokaʻawale kūikawā ma kahi substrate kākoʻo porous. He kiʻekiʻe ka nui o ka hoʻokaʻawale solute a me ka nui o ke komo ʻana o ka wai ma mua o nā membranes i hoʻohui ʻia, a no laila ua loaʻa i kahi mākeke ma luna o 90%. I kēia manawa, ua hoʻohana nui ʻia nā membrane reverse osmosis composite i nā kula e like me ka petrochemicals, electronics, textiles, light industry, metallurgy, lāʻau lapaʻau, biotechnology, meaʻai, a me ka mālama ʻana i ke kaiapuni.