1. Kev kho dej khib nyiab hauv kev lag luam hlau
Yam ntxwv:Nws muaj cov ntsiab lus siab ntawm cov khoom raug tshem tawm (hlau scraps, ore hmoov), hnyav hlau ions (zinc, lead, thiab lwm yam), thiab cov tshuaj colloidal.
Kev Kho Mob:PAC yog ntxiv (ntau npaum li cas: 0.5-1.5‰) kom sai sai flocs los ntawm adsorption thiab bridging teebmeem, ua ke nrog sedimentation tso tsheb hlau luam rau cov khoom-kua sib cais, txo effluent turbidity ntau tshaj 85%.
Kev ua tau zoo:Hnyav hlau ion tshem tawm ntau tshaj 70%, nrog kev kho cov dej khib nyiab sib ntsib cov qauv tso tawm.
2. Decolorization ntawm dyeing khib nyiab
Yam ntxwv:High chromaticity (dye residues), siab COD (chemical oxygen xav tau), thiab tseem ceeb pH hloov pauv.
Kev Kho Mob:PACyog siv ua ke nrog pH adjusters (ntau npaum li cas: 0.8-1.2‰), ua Al(OH)₃ colloids rau adsorb dye molecules. Ua ke nrog huab cua flotation, cov txheej txheem ua tiav 90% xim tshem tawm tus nqi.
3. Pretreatment ntawm Polyester Chemical Wastewater
Yam ntxwv:COD siab heev (txog 30,000 mg / L, muaj macromolecular organics xws li terephthalic acid thiab ethylene glycol esters).
Kev Kho Mob:Thaum lub sij hawm coagulation,PAC(dosage: 0.3-0.5‰) neutralizes colloidal nqi, thaum polyacrylamide (PAM) txhim khu flocculation, ua kom tiav qhov pib COD txo ntawm 40%.
Kev ua tau zoo:Tsim cov xwm txheej zoo rau cov hlau-carbon micro-electrolysis thiab UASB anaerobic kev kho mob.
4. Kev kho cov dej khib nyiab txhua hnub
Yam ntxwv:Muaj cov ntsiab lus siab ntawm surfactants, roj, thiab cov dej tsis ruaj tsis khov.
Kev Kho Mob:PAC(dosage: 0.2-0.4‰) yog ua ke nrog coagulation-sedimentation kom tshem tawm cov khib nyiab, txo cov load ntawm kev kho mob lom thiab txo qis COD los ntawm 11,000 mg / L rau 2,500 mg / L.
5. Kev ua kom huv ntawm iav ua cov dej khib nyiab
Yam ntxwv:High alkaline (pH> 10), muaj cov iav sib tsoo thiab cov khoom tsis zoo biodegradable.
Kev Kho Mob:Polymeric aluminium ferric chloride (PAFC) yog ntxiv rau neutralize alkalinity, ua tiav tshaj 90% tshem tawm cov khib nyiab. Cov dej turbidity yog ≤5 NTU, ua kom ruaj khov ntawm cov txheej txheem ultrafiltration tom ntej.
6. Kev kho mob ntawm High-Fluoride Industrial Wastewater
Yam ntxwv:Semiconductor / etching kev lag luam dej khib nyiab uas muaj fluorides (concentration> 10 mg / L).
Kev Kho Mob:PACreacts nrog F⁻ ntawm Al³⁺ los ua AlF₃ precipitate, txo cov fluoride concentration ntawm 14.6 mg/L rau 0.4-1.0 mg/L (ua raws li cov qauv dej haus).
Post lub sij hawm: May-15-2025