Txoj kev sib cais ntawm electroplated zaj duab xis ntawm hluav taws xob cua sov raj

Txoj kev sib cais ntawm electroplated zaj duab xis ntawm hluav taws xob cua sov raj

Txoj kev sib cais ntawm daim nyias nyias siv cov txheej txheem kev sib cais ntawm daim nyias nyias raws li qhov nruab nrab ntawm kev sib cais. Thaum muaj qee yam kev tsav tsheb (xws li qhov sib txawv ntawm qhov sib txawv, qhov sib txawv ntawm qhov sib txawv, qhov sib txawv ntawm qhov sib txawv, thiab lwm yam) ntawm ob sab ntawm daim nyias nyias, cov khoom siv raw khoom tau xaiv nkag mus rau hauv daim nyias nyias kom ua tiav lub hom phiaj ntawm kev sib cais thiab tshem tawm cov khoom tsis zoo. Tam sim no, cov txheej txheem paub tab ntau dua hauv kev lag luam yog electrodialysis, thim rov qab osmosis, ultrafiltration thiab kua membrane. Lwm txoj hauv kev xws li membrane bioreactors thiab microfiltration tseem nyob rau theem pib theoretical tshawb fawb thiab tseem tsis tau siv rau hauv kev lag luam. Nyob rau hauv qhov kev txiav txim ntawm DC hluav taws xob teb, electrodialysis siv lub peev xwm sib txawv raws li lub zog tsav tsheb thiab siv cov kev xaiv permeability ntawm ion exchange membrane los ntxuav cov dej khib nyiab. Rov qab osmosis yog ib txoj kev ntawm kev sib cais ua tiav los ntawm diffusion ntawm cov kuab tshuaj nyob rau hauv ib qho kev siab sab nraud. Txoj kev ultrafiltration kuj yog txheej txheem membrane rau kev sib cais sib cais uas tau tsav los ntawm qhov sib txawv ntawm qhov sib txawv. Cov kua ua kua muaj xws li cov khoom siv tsis yog cov kua membranes, cov khoom siv ua kua ua kua, cov kua ua kua membrane, thiab lwm yam. Thaum cov kua membrane yog dispersed nyob rau hauv electroplating wastewater, lub mobile carrier xaiv chelates hnyav hlau ions ntawm lub interface ntawm txheej txheej ntawm daim nyias nyias, ces diffuses. nyob rau hauv cov kua membrane thiab dissociates ntawm lub interface hauv daim nyias nyias. Hnyav hlau ions nkag mus rau theem sab hauv ntawm daim nyias nyias rau enrichment, thiab lub mobile cab kuj rov qab mus rau lub interface ntawm txheej txheej. Cov txheej txheem no txuas ntxiv mus, thiab cov dej khib nyiab tau huv. Qhov zoo ntawm txoj kev sib cais membrane muaj xws li lub zog hloov pauv siab, cov cuab yeej yooj yim, kev ua haujlwm yooj yim, tswj tau yooj yim, thiab kev sib cais siab. Tab sis kev nqis peev yog loj, tus nqi khiav lag luam yog siab, thiab lub neej ntawm zaj duab xis yog luv. Feem ntau yog siv rau cov khoom siv rov ua dua tshiab nrog cov nqi ntxiv, xws li kub. Kev rov qab los ntawm cov dej yaug hauv kev lag luam electroplating yog qhov tseem ceeb ntawm kev siv electrodialysis hauv kev kho cov kua khib nyiab. Cov dej thiab hlau ions tuaj yeem rov ua dua tshiab. Tag nrho cov txheej txheem tuaj yeem ua haujlwm nyob rau hauv qhov kub thiab txias thiab dav pH, thiab qhov concentration ntawm cov tshuaj zoo tuaj yeem ua rau muaj zog ntau ntxiv. Qhov tsis zoo yog tias nws tsuas yog siv tau los rov qab cov khoom ionic. Cov txheej txheem ua kua membrane yog siv los kho chromium uas muaj cov dej khib nyiab. Lub ionophore yog TBP (tributyl phosphate), thiab Span80 yog cov membrane stabilizer. Cov txheej txheem yog ib qho yooj yim rau kev khiav lag luam, cov cuab yeej siv yooj yim, thiab cov khoom siv raw khoom pheej yig thiab yooj yim kom tau txais. Tsis yog ionophore, xws li nruab nrab amine, kuj tseem siv. Alanmine 336 (trioctylamine) feem ntau yog siv, 2 feem pua ​​Span80 yog siv los ua surfactant, thiab sib tov ntawm hexachloro1, 3-butadiene (19 feem pua) thiab polybutadiene (74 feem pua) yog siv los ua hnyav. Cov txheej txheem sib cais yog muab faib rau hauv kev rho tawm, stripping thiab lwm cov kauj ruam. Tsis ntev los no, microfiltration kuj tau siv los kho cov dej khib nyiab uas muaj cov hlau hnyav, uas tuaj yeem tshem tawm cov hlau hnyav xws li cadmium thiab chromium los ntawm cov dej khib nyiab xws li hlau electroplating.

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