I-Electrodialysis (ED) yinkqubo esebenzisa i-membrane e-semipermeable kunye nentsimi yombane yangoku ngokukhetha ukuthutha amaqhekeza e-solute (njenge-ion) kwisisombululo. Le nkqubo yokwahlula igxininisa, ihlambulula, icokisa, kwaye icoca izisombululo ngokuyalela izinyibilikisi ezihlawuliswayo kude namanzi kunye namanye amacandelo angahlawuliswanga. I-Electrodialysis iye yavela kwiyunithi yokusebenza kweekhemikhali ezinkulu kwaye idlala indima ebalulekileyo kwitekhnoloji yokwahlula i-membrane. Ifumana ukusetyenziswa okubanzi kumashishini afana nokukhutshwa kweekhemikhali, ukukhutshwa kwetyuwa emanzini olwandle, ukutya kunye namayeza, kunye nokucocwa kwamanzi amdaka. Kweminye imimandla, iye yaba yeyona ndlela iphambili yokuvelisa amanzi okusela. Ibonelela ngezibonelelo ezinje ngosetyenziso oluphantsi lwamandla, izibonelelo ezibalulekileyo zoqoqosho, unyango olulula, izixhobo ezomeleleyo, uyilo lwenkqubo eguquguqukayo, ukusebenza ngokulula kunye nokugcinwa, inkqubo ecocekileyo, ukusetyenziswa kweekhemikhali okuncinci, ukungcoliseka okuncinci kokusingqongileyo, ixesha elide lesixhobo, kunye namazinga aphezulu okubuyisela amanzi (ngokuqhelekileyo ukusuka kwi-65% ukuya kwi-80%).
Iindlela eziqhelekileyo ze-electrodialysis ziquka i-electrodeionization (EDI), i-electrodialysis reversal (EDR), i-electrodialysis eneembrane zamanzi (EDLM), i-electrodialysis ephezulu yokushisa, i-roll-type electrodialysis, i-bipolar membrane electrodialysis, kunye nabanye.
I-Electrodialysis ingasetyenziselwa unyango lweentlobo ezahlukeneyo zamanzi amdaka, kubandakanywa amanzi amdaka e-electroplating kunye namanzi amdaka anesinyithi. Ingasetyenziselwa ukukhupha i-ion zetsimbi kunye nezinye izinto kumanzi amdaka, okuvumela ukufunyanwa kunye nokusetyenziswa kwakhona kwamanzi kunye nezibonelelo ezixabisekileyo ngelixa kuncitshiswa ungcoliseko kunye nokukhutshwa. Uphononongo lubonise ukuba i-electrodialysis inokubuyisela ubhedu, i-zinc, kunye ne-oxidize i-Cr3+ ukuya kwi-Cr6+ ngexesha lokunyangwa kwezisombululo ze-passivation kwinkqubo yokuvelisa ubhedu. Ukongeza, i-electrodialysis iye yadityaniswa kunye notshintshiselwano lwe-ion ukubuyiswa kwesinyithi esinzima kunye ne-asidi ukusuka kumanzi amdaka okuchola i-asidi kwizicelo zamashishini. Izixhobo eziyilwe ngokukodwa ze-electrodialysis, zisebenzisa zombini i-anion kunye ne-cation exchange resins njengezizalisi, zisetyenziselwe ukunyanga amanzi amdaka esinyithi esinzima, ukuphumeza ukuphinda kusetyenziswe okuvaliweyo kunye nokukhutshwa kwe-zero. I-Electrodialysis ingasetyenziswa ukunyanga amanzi amdaka e-alkaline kunye namanzi amdaka aphilayo.
Uphando oluqhutywe kwiLebhu yeSizwe yoLawulo loNgcoliseko kunye nokuSetyenziswa kwakhona kweZibonelelo e-China kuphonononge unyango lwamanzi amdaka ealkali aqulathe irhasi yomsila ye-epoxy propane chlorination kusetyenziswa i-ion exchange membrane electrolysis. Xa umbane we-electrolysis wawuyi-5.0V kunye nexesha lokujikeleza laliyiyure ze-3, izinga lokususwa kwe-COD yamanzi amdaka lifikelele kwi-78%, kwaye izinga lokubuyisela i-alkali laliphezulu njenge-73.55%, lisebenza njenge-pretreatment esebenzayo kwiiyunithi ze-biochemical ezilandelayo. Itekhnoloji ye-Electrodialysis nayo isetyenziselwe ukunyanga amanzi amdaka e-asidi e-organic enoxinaniso oluphezulu, kunye noxinzelelo olusuka kwi-3% ukuya kwi-15%, yi-Shandong Luhua Petrochemical Company. Le ndlela ibangela ukuba akukho ntsalela okanye ungcoliseko lwesibini, kwaye isisombululo esigxininisiweyo esifunyenweyo siqulethe i-20% ukuya kwi-40% ye-asidi, enokuthi isetyenziswe kwakhona kwaye iphathwe, ukunciphisa umxholo we-asidi kumanzi amdaka ukuya kwi-0.05% ukuya kwi-0.3%. Ukongeza, iSinopec Sichuan Petrochemical Company isebenzise isixhobo esikhethekileyo sokuhlaziya i-electrodialysis ukunyanga amanzi amdaka adityanisiweyo, yafumana umthamo omkhulu wonyango we-36 t/h, kunye nomxholo we-ammonium nitrate kumanzi agxininisiweyo afikelela ngaphezulu kwama-20%, kwaye ifumana ireyithi yokubuyisela ngaphezulu kwama-96. %. Amanzi acocekileyo acociweyo ane-ammonium nitrogen mass fraction ye-≤40mg/L, ehlangabezana nemigangatho yokusingqongileyo.
Ixesha lokuposa: Sep-07-2023
