I-Electrodialysis (ED) yinkqubo esebenzisa i-membrane engakwazi ukungena ngaphakathi kunye nentsimi yombane yamandla angqalileyo ukuhambisa ngokukhetha amasuntswana anyibilikayo atshajiweyo (njengee-ion) kwisisombululo. Le nkqubo yokwahlula igxininisa, inyibilikisa, iphucula, kwaye icoce izisombululo ngokuqondisa i-solutes ezitshajiweyo kude namanzi kunye nezinye izinto ezingatshajiswanga. I-Electrodialysis iguqukele ekubeni ngumsebenzi weyunithi enkulu yeekhemikhali kwaye idlala indima ebalulekileyo kubuchwepheshe bokwahlula i-membrane. Isetyenziswa ngokubanzi kumashishini afana nokususa ityuwa kwiikhemikhali, ukususa ityuwa emanzini olwandle, ukutya kunye namayeza, kunye nonyango lwamanzi amdaka. Kwezinye iindawo, iye yaba yindlela ephambili yokuvelisa amanzi okusela. Ibonelela ngeenzuzo ezifana nokusetyenziswa kwamandla aphantsi, iingenelo ezibalulekileyo kwezoqoqosho, unyango olulula lwangaphambi konyango, izixhobo ezihlala ixesha elide, uyilo lwenkqubo oluguquguqukayo, ukusebenza okulula kunye nokugcinwa, inkqubo ecocekileyo, ukusetyenziswa kweekhemikhali okuphantsi, ungcoliseko oluncinci lokusingqongileyo, ubomi besixhobo obude, kunye namazinga aphezulu okubuyisela amanzi (ngokwesiqhelo ukusuka kwi-65% ukuya kwi-80%).
Iindlela eziqhelekileyo zokucoca nge-electrodialysis ziquka i-electrodeionization (EDI), i-electrodialysis reversal (EDR), i-electrodialysis ene-liquid membranes (EDLM), i-electrodialysis yobushushu obuphezulu, i-roll-type electrodialysis, i-bipolar membrane electrodialysis, kunye nezinye.
I-Electrodialysis ingasetyenziselwa unyango lweentlobo ezahlukeneyo zamanzi amdaka, kuquka amanzi amdaka asebenzisa i-electroplating kunye namanzi amdaka angcoliswe yi-heavy metal. Ingasetyenziswa ukukhupha ii-ion zesinyithi kunye nezinye izinto emanzini amdaka, okuvumela ukubuyiselwa nokusetyenziswa kwakhona kwamanzi kunye nezixhobo ezixabisekileyo ngelixa kunciphisa ungcoliseko kunye nokukhutshwa komoya. Izifundo zibonise ukuba i-electrodialysis inokubuyisela i-copper, i-zinc, kwaye ide i-oxidize i-Cr3+ kwi-Cr6+ ngexesha lonyango lwezisombululo ze-passivation kwinkqubo yokuvelisa i-copper. Ukongeza, i-electrodialysis idityaniswe nokutshintshwa kwee-ion ukuze kubuyiselwe ii-heavy metals kunye nee-acids emanzini amdaka asebenzisa i-acid pickling kwizicelo zoshishino. Izixhobo ze-electrodialysis ezenzelwe ngokukodwa, ezisebenzisa i-anion kunye ne-cation exchange resins njengezizalisi, zisetyenziselwe ukunyanga amanzi amdaka esinyithi esinzima, zifezekisa ukuphinda kusetyenziswe i-closed-loop kwaye zingakhuphi. I-Electrodialysis ingasetyenziselwa nokunyanga amanzi amdaka e-alkaline kunye namanzi amdaka e-organic.
Uphando olwenziwe kwi-State Key Laboratory of Pollution Control and Reuse Reuse e-China luhlolisise unyango lwamanzi amdaka okuhlanjwa nge-alkali ane-epoxy propane chlorination tail gas kusetyenziswa i-ion exchange membrane electrolysis. Xa i-electrolysis voltage yayiyi-5.0V kwaye ixesha lokujikeleza laliziiyure ezi-3, izinga lokususwa kwe-COD yamanzi amdaka lafikelela kwi-78%, kwaye izinga lokubuyiselwa kwe-alkali laliphezulu njenge-73.55%, lisebenza njengonyango olusebenzayo lwangaphambi kweeyunithi ze-biochemical ezilandelayo. Itekhnoloji ye-Electrodialysis ikwasetyenzisiwe ukunyanga amanzi amdaka e-organic acid ayinkimbinkimbi, anoxinzelelo oluqala kwi-3% ukuya kwi-15%, yiShandong Luhua Petrochemical Company. Le ndlela ayiphumeleli kwiintsalela okanye ungcoliseko lwesibini, kwaye isisombululo esixineneyo esifunyenweyo siqulethe i-20% ukuya kwi-40% ye-asidi, enokuphinda isetyenziswe kwaye inyangwe, inciphisa umxholo we-asidi emanzini amdaka ukuya kwi-0.05% ukuya kwi-0.3%. Ukongeza, iSinopec Sichuan Petrochemical Company isebenzise isixhobo esikhethekileyo se-electrodialysis ukunyanga amanzi amdaka acondensate, ifikelela kumthamo ophezulu wonyango we-36 t/h, kunye nomxholo we-ammonium nitrate emanzini axineneyo ufikelela ngaphezulu kwe-20%, kwaye ifikelela kwinqanaba lokubuyisela elingaphezulu kwe-96%. Amanzi acocekileyo acociweyo ayenenxalenye ye-ammonium nitrogen mass fraction ye-≤40mg/L, ehlangabezana nemigangatho yokusingqongileyo.
Ixesha lokuthumela: Sep-07-2023
