Phenolic resin yog ib qho tseem ceeb raw cov ntaub ntawv hauv kev lag luam xws li nres nres thiab abrasives. Cov dej khib nyiab tsim thaum lub sij hawm tsim cov phenolic resin yog ib qho teeb meem nyuaj rau cov tuam ntxhab.
Phenolic resin tsim cov dej khib nyiab muaj cov ntsiab lus siab ntawm phenols, aldehydes, resins thiab lwm yam khoom siv organic, thiab muaj cov yam ntxwv ntawm cov organic concentration, siab toxicity, thiab pH tsawg. Muaj ntau txoj hauv kev los kho cov dej khib nyiab uas muaj phenol, thiab cov kev siv dav dav suav nrog cov txheej txheem biochemical, chemical oxidation method, extraction method, adsorption method, thiab gas stripping method.
Nyob rau hauv xyoo tas los no, ntau txoj kev tshiab tau tshwm sim, xws li catalytic oxidation txoj kev, kua membrane sib cais txoj kev, thiab lwm yam, tab sis nyob rau hauv tiag tiag phenolic resin dej khib nyiab tej yaam num, tshwj xeeb tshaj yog nyob rau hauv thiaj li yuav ua tau raws li cov qauv tso tawm, biochemical txoj kev tseem yog lub ntsiab txoj kev. Piv txwv li, cov nram qab no phenolic resin wastewater kho txoj kev.
Ua ntej, ua ib qho kev kho condensation ntawm phenolic resin wastewater, rho tawm thiab rov qab cov resin los ntawm nws. Tom qab ntawd, cov tshuaj thiab cov catalysts ntxiv rau phenolic resin khib nyiab tom qab kev kho thawj zaug, thiab kev kho mob thib ob yog ua kom tshem tawm phenol thiab formaldehyde.
Cov dej khib nyiab phenolic tom qab kev kho mob thib ob yog sib xyaw nrog cov dej khib nyiab, pH tus nqi raug hloov mus rau 7-8, thiab nws raug tso cai sawv ntsug. Tom qab ntawd txuas ntxiv ntxiv ClO2 rau catalytically oxidize cov dej khib nyiab ntxiv kom txo cov ntsiab lus ntawm formaldehyde thiab COD. Tom qab ntawd ntxiv FeSO4, thiab kho tus nqi pH rau 8-9 kom tshem tawm ClO2 coj los ntawm cov kauj ruam dhau los.
Cov dej khib nyiab ua ntej phenolic resin yuav raug SBR biochemical kho kom tshem tawm cov pa phem hauv dej los ntawm cov kab mob.
phenolic resin ntau lawm dej khib nyiab yog pre-kho ua ntej, thiab ces regenerated, kom cov dej khib nyiab tuaj yeem ncav cuag tus qauv.
Post lub sij hawm: Aug-15-2021