Electrodialysis (ED) chirongwa chinoshandisa semipermeable membrane uye yakananga ikozvino munda wemagetsi kutakura zviri pamutemo kutakura solute particles (senge maion) kubva mumhinduro. Iyi nzira yekuparadzanisa inotarisisa, inonatsa, inonatsa, uye inonatsa zvigadziriso kuburikidza nekutungamira zvinochajiswa kubva kumvura uye zvimwe zvisina kubhadhariswa zvikamu. Electrodialysis yakashanduka kuita yakakura-chiyero chemakemikari unit oparesheni uye inoita basa rakakosha mu membrane yekuparadzanisa tekinoroji. Inowana kushandiswa kwakakura mumaindasitiri akadai sekubvisa makemikari emunyu, kuchenesa mvura yegungwa, chikafu nemishonga, uye kurapwa kwemvura yetsvina. Mune mamwe matunhu, yave nzira yekutanga kugadzira mvura yekunwa. Inopa mabhenefiti akadai sekushomeka kwesimba rekushandisa, yakakosha hupfumi mabhenefiti, nyore pretreatment, yakasimba dhizaini, inochinjika sisitimu dhizaini, nyore kushanda uye kugadzirisa, kuchena maitiro, kuderera kwemakemikari kushandiswa, kushoma kusvibiswa kwezvakatipoteredza, kureba kwechishandiso hupenyu, uye yakakwirira yekudzoreredza mvura mitengo (kazhinji. kubva 65% kusvika 80%).
Maitiro emagetsi akajairika anosanganisira electrodeionization (EDI), electrodialysis reversal (EDR), electrodialysis ine liquid membranes (EDLM), high-temperature electrodialysis, roll-type electrodialysis, bipolar membrane electrodialysis, nevamwe.
Electrodialysis inogona kushandiswa kurapa marudzi akasiyana emvura yetsvina, kusanganisira electroplating wastewater uye heavy metal-yakasvibiswa tsvina. Inogona kushandiswa kubvisa maion simbi nezvimwe zvinhu kubva mumvura yakasviba, zvichibvumira kudzoreredza uye kushandiswazve kwemvura uye zviwanikwa zvakakosha uku ichideredza kusvibiswa uye kubuda. Zvidzidzo zvakaratidza kuti electrodialysis inogona kudzoreredza mhangura, zingi, uye kunyange oxidize Cr3+ kusvika Cr6+ panguva yekurapa kwepassivation mhinduro mukugadzirwa kwemhangura. Pamusoro pezvo, electrodialysis yakasanganiswa neyekuchinjanisa ion kudzoreredza simbi inorema uye maasidhi kubva kune acid yekunhonga tsvina mumaindasitiri ekushandisa. Yakanyanya kugadzirwa electrodialysis zvishandiso, uchishandisa ese anion uye cation exchange resin semafirita, akashandiswa kurapa inorema simbi tsvina, kuwana yakavharwa-loop recycling uye zero discharge. Electrodialysis inogona zvakare kushandiswa kurapa alkaline wastewater uye organic wastewater.
Tsvagiridzo yakaitwa paState Key Laboratory yePollution Control uye Resource Reuse muChina yakaongorora mabatirwo emvura yakasviba yealkali ine epoxy propane chlorination muswe gasi uchishandisa ion exchange membrane electrolysis. Apo magetsi eelectrolysis akanga ari 5.0V uye nguva yekutenderera yakanga iri maawa matatu, kubviswa kweCOD yemvura yakasviba yakasvika 78%, uye alkali recovery rate yakakwira kusvika 73.55%, ichishanda semushonga unoshanda wezvikamu zvinotevera zvebiochemical. Electrodialysis tekinoroji yakashandiswawo kurapa yakakwira-concentration yakaoma organic acid wastewater, ine concentrations kubva pa3% kusvika 15%, neShandong Luhua Petrochemical Company. Iyi nzira inoita kuti pasave nemasara kana kusvibiswa kwechipiri, uye iyo yakagadziriswa mhinduro inowanikwa ine 20% kusvika 40% asidhi, iyo inogona kudzokororwa uye kurapwa, kuderedza iyo asidhi iri mumvura yakaraswa kusvika 0.05% kusvika 0.3%. Pamusoro pezvo, Sinopec Sichuan Petrochemical Company yakashandisa mudziyo wakasarudzika we electrodialysis kuchenesa mvura yetsvina, ichiwana hupamhi hwekurapa hunosvika 36 t/h, ine ammonium nitrate iri mumvura yakadzika inosvika pamusoro pe20%, uye kuwana huwandu hwekupora hunopfuura makumi mapfumbamwe nematanhatu. %. Mvura yakachena yakagadziriswa yaiva neammonium nitrogen mass chikamu che ≤40mg/L, inosangana nemamiriro ezvakatipoteredza.
Nguva yekutumira: Sep-07-2023
