Ko te electrodialysis (ED) he tukanga e whakamahi ana i te kiriuhi haurua-permeable me te mara hiko au tika hei kawe whiriwhiri i ngā matūriki matū kua utua (pērā i ngā iona) mai i te otinga. Ka whakatōtō, ka waimeha, ka whakamahine, ka purea hoki ngā otinga e tēnei tukanga wehenga mā te arahi i ngā matū kua utua kia matara atu i te wai me ētahi atu wāhanga kāore i utua. Kua whanake te electrodialysis hei mahi waeine matū nui, ā, he mahi nui tana i roto i te hangarau wehenga kiriuhi. Ka kitea te whakamahinga whānui i roto i ngā ahumahi pēnei i te tango tote matū, te tango tote wai moana, te kai me te rongoā, me te maimoatanga waipara. I ētahi rohe, kua noho hei tikanga matua mō te whakaputa wai inu. He painga pēnei i te iti o te whakapaunga pūngao, ngā painga ōhanga nui, te maimoatanga mua ngāwari, ngā taputapu pakari, te hoahoa pūnaha ngāwari, te whakahaere me te tiaki ngāwari, te tukanga ma, te iti o te whakapaunga matū, te iti o te parahanga taiao, te roa o te oranga o te taputapu, me ngā reiti whakaora wai teitei (mai i te 65% ki te 80%).
Ko ngā tikanga hiko-whakawhitiwhiti noa ko te electrodeionization (EDI), te electrodialysis reversal (EDR), te electrodialysis me ngā kiriuhi wai (EDLM), te electrodialysis pāmahana-teitei, te electrodialysis momo-hurihuri, te electrodialysis kiriuhi bipolar, me ētahi atu.
Ka taea te whakamahi i te electrodialysis mō te maimoatanga o ngā momo wai para, tae atu ki te whakakikorua i te wai para me te wai para kua poke i te konganuku taumaha. Ka taea te whakamahi hei tango i ngā katote konganuku me ētahi atu matū mai i te wai para, ka taea ai te whakaora me te whakamahi anō i te wai me ngā rauemi whai hua, me te whakaiti i te parahanga me ngā tukunga. Kua whakaatuhia e ngā rangahau ka taea e te electrodialysis te whakaora i te parahi, te konutea, tae atu ki te whakakōkī i te Cr3+ ki te Cr6+ i te wā e tukatukahia ana ngā otinga passivation i roto i te tukanga whakaputa parahi. Hei tāpiri, kua whakakotahihia te electrodialysis me te whakawhiti katote mō te whakaora i ngā konganuku taumaha me ngā waikawa mai i te wai para whakapūkara waikawa i roto i ngā tono ahumahi. Kua whakamahia ngā taputapu electrodialysis i hangaia motuhake, e whakamahi ana i ngā kapia whakawhiti anion me te cation hei whakakī, hei whakaora i ngā wai para konganuku taumaha, kia tutuki ai te hangarua katia me te kore tukunga. Ka taea hoki te whakamahi i te electrodialysis hei whakaora i ngā wai para kawakore me ngā wai para waro.
I whakahaerehia he rangahau i te State Key Laboratory of Pollution Control and Reuse Resource i Haina, i rangahauhia te maimoatanga o te wai para horoi alkali kei roto te hau hiku epoxy propane chlorination mā te whakamahi i te electrolysis membrane exchange exchange. I te wā i 5.0V te ngaohiko electrolysis, ā, e 3 hāora te roa o te tohanga, ka eke te tere tango COD o te wai para ki te 78%, ā, ko te tere whakaora alkali i eke ki te 73.55%, he maimoatanga whai hua mō ngā waeine matū koiora o muri mai. Kua whakamahia hoki te hangarau electrodialysis ki te maimoatanga i te wai para waikawa waro matatini kukū teitei, me ngā kukū mai i te 3% ki te 15%, e te Shandong Luhua Petrochemical Company. Kāore he toenga, he parahanga tuarua rānei e puta mai i tēnei tikanga, ā, ko te otinga kukū i whiwhihia he 20% ki te 40% waikawa, ka taea te hangarua me te maimoatanga, ka whakaiti i te ihirangi waikawa i roto i te wai para ki te 0.05% ki te 0.3%. Hei tāpiritanga, i whakamahia e te Kamupene Petrochemical Sinopec Sichuan tētahi taputapu hiko motuhake hei rongoā i te wai para wai whakapūpū, ā, i tutuki ai te kaha tukatuka mōrahi o te 36 tana/h, me te nui o te haukini pākawa waro i roto i te wai kukū neke atu i te 20%, ā, i tutuki ai te tere whakaora neke atu i te 96%. Ko te nui o te haukini hauota i roto i te wai māori i rongoātia he ≤40mg/L, e tutuki ana i ngā paerewa taiao.
Wā tuku: Hepetema-07-2023
