Electrodialysis (ED) bụ usoro na-eji akpụkpọ anụ semipermeable na mpaghara ọkụ eletrik ugbu a na-ahọrọ iji ebufe irighiri ihe solute ebubo (dị ka ion) site na ngwọta. Usoro nkewa a na-etinye uche, na-agbaze, na-anụcha ma na-asachapụ ihe ngwọta site n'iduzi solutes na mmiri na ihe ndị ọzọ anaghị akwụ ụgwọ. Electrodialysis etoola ka ọ bụrụ nnukwu ọrụ otu kemịkalụ ma na-arụ oke ọrụ na teknụzụ nkewa akpụkpọ ahụ. Ọ na-achọta ngwa ngwa n'ime ụlọ ọrụ ndị dị ka nsị kemịkalụ, nsị mmiri mmiri, nri na ọgwụ, na ọgwụgwọ mmiri. Na mpaghara ụfọdụ, ọ bụrụla ụzọ bụ isi na-emepụta mmiri ọñụñụ. Ọ na-enye uru dị ka obere ume ike, uru akụ na ụba dị ịrịba ama, nhazi dị mfe, ngwá ọrụ na-adịgide adịgide, nhazi usoro mgbanwe, ịrụ ọrụ dị mfe na nhazi, usoro dị ọcha, obere mmiri ọgwụ, obere mmetọ gburugburu ebe obibi, ogologo oge ndụ ngwaọrụ, na ọnụ ọgụgụ mgbake mmiri dị elu (na-emekarị. sitere na 65% ruo 80%.
Usoro electrodialysis nkịtị gụnyere electrodeionization (EDI), electrodialysis reversal (EDR), electrodialysis with liquid membranes (EDLM), elu okpomọkụ electrodialysis, mpịakọta ụdị electrodialysis, bipolar membrane electrodialysis, na ndị ọzọ.
Enwere ike iji Electrodialysis mee ihe maka ọgwụgwọ ụdị mmiri dị iche iche, gụnyere electroplating mmiri mkpofu na mmiri mkpofu metal dị arọ. Enwere ike iji ya mee ihe iji wepụ ion ígwè na ihe ndị ọzọ na mmiri na-ekpofu mmiri, na-enye ohere maka mgbake na iji mmiri na ihe ndị bara uru na-ebelata mmetọ na ikuku. Nnyocha egosiwo na electrodialysis nwere ike nwetaghachi ọla kọpa, zinc, na ọbụna oxidize Cr3 + ruo Cr6 + n'oge ọgwụgwọ nke ngwọta passivation na usoro mmepụta ọla kọpa. Na mgbakwunye, ejirila electrodialysis jikọtara ya na mgbanwe ion maka mgbake nke ọla dị arọ na acid sitere na mmiri mkpofu acid na-atụtụ na ngwa ụlọ ọrụ mmepụta ihe. Ngwa eletrọdialysis emebere nke ọma, na-eji ma anion na resins cation dị ka ihe ndochi, ejirila gwọọ mmiri mkpofu ọla dị arọ, na-enweta nrụgharị mechiri emechi na mwepu efu. A nwekwara ike itinye electrodialysis iji gwọọ mmiri mkpofu alkaline na mmiri mkpofu organic.
Nnyocha e mere na State Key Laboratory of Pollution Control and Resource Reuse na China mụrụ banyere ọgwụgwọ alkali ịsacha mmiri mkpofu nwere epoxy propane chlorination ọdụ gas site na iji ion Exchange membrane electrolysis. Mgbe voltaji electrolysis bụ 5.0V na oge mgbasa ozi bụ awa 3, ọnụego mwepụ COD nke mmiri mkpofu ruru 78%, ọnụego mgbake alkali dị elu dị ka 73.55%, na-eje ozi dị ka pretreatment dị irè maka nkeji biochemical na-esote. A na-ejikwa teknụzụ eletrọdialysis na-agwọ mmiri mkpofu organic acid dị mgbagwoju anya, yana mkpokọta sitere na 3% ruo 15%, nke Shandong Luhua Petrochemical Company. Usoro a na-eme ka ọ dịghị ihe fọdụrụnụ ma ọ bụ mmetọ nke abụọ, na ngwọta a gbanyere mkpọrọgwụ nwetara nwere 20% ruo 40% acid, nke enwere ike ịmegharị ma mesoo ya, na-ebelata ọdịnaya acid dị na mmiri mmiri na 0.05% ruo 0.3%. Tụkwasị na nke ahụ, Sinopec Sichuan Petrochemical Company na-eji ngwá ọrụ electrodialysis pụrụ iche na-agwọ mmiri mkpofu condensate, na-enweta ikike ọgwụgwọ kachasị nke 36 t / h, na ọdịnaya ammonium nitrate n'ime mmiri a na-etinye uche na-eru n'elu 20%, na-enweta mgbake nke ihe karịrị 96. % Mmiri ọhụrụ a na-edozi nwere obere ammonium nitrogen mass ≤40mg/L, na-ezute ụkpụrụ gburugburu ebe obibi.
Oge nzipu: Sep-07-2023
