Overviewpapaking Wastewater feem ntau yog los ntawm ob txheej txheem ntau lawm ntawm pulping thiab papermaking hauv kev lag luam papermaking. Pulping yog cais cov fibers los ntawm cov khoom nyoos, ua kom cov pulp, thiab tom qab ntawd muab nws dawb. Cov txheej txheem no yuav tsim cov nyiaj tso dej kom loj. papermaking yog kom dilute, cov duab, nias, thiab kom qhuav pulp los ua ntawv. Tus txheej txheem no tseem muaj kev tsim kom tsim cov khoom siv lim dej. Lub zog tso dej loj tsim tawm hauv cov txheej txheem ntawm cov cawv yog cov cawv dub thiab cov cawv liab, thiab cov papermaking tsuas yog tsim cov dej dawb.
Lub ntsiab tseem ceeb 1. Cov nqi loj ntawm cov dej lwg.2. Cov neeg pov tseg muaj cov nyiaj loj ntawm cov khib nyiab, feem ntau yog number cas, fiber ntau, muab tub lim thiab ntxiv.3. SS, COD, BOD, BOD, BOD thiab lwm cov kuab paug nyob rau hauv cov dej paug tsis zoo, cov ntsiab lus cim tau siab dua lub cev, thiab cov xim yog tsaus dua.
Kev Kho Mob Kho Mob thiab Teeb Meem.1. Txoj Kev Kho Txoj kev kho mob tam sim no tsuas yog siv Anaerobic, aerobic, lub cev thiab tshuaj sib xyaws thiab cov txheej txheem sedimentation ua ke hom.
Cov txheej txheem kho thiab ntws: Tom qab cov neeg siv dej khib nyiab, nws tau nkag mus rau hauv lub thoob khib nyiab, nkag mus rau cov polyaluminum chloride thiab polyacrylamide. Tom qab nkag mus rau lub flotation, ss thiab ib feem ntawm lub bod thiab cod hauv cov dej khib nyiab raug tshem tawm. Lub flotation effluent nkag mus nkag rau hauv lub anaerobic thiab aerobic ob-theem biochemical kev kho kom tshem tawm feem ntau ntawm lub cev thiab cod hauv dej. Tom qab lub tank theem nrab detimentation tank, tus lej thiab chromaticity ntawm cov dej khib nyiab tsis tau raws li cov qauv emission. Tshuaj lom neeg sib xyaw ua ke yog siv rau kev kho mob txhim kho kom cov qauv pov tseg tuaj yeem ntsib tus qauv emission lossis tuaj yeem ua tau raws li cov qauv emission.
Cov teeb meem thiab kev daws teeb meem 1) COD tau ntau dua tus qauv. Tom qab cov dej khib nyiab yog kho los ntawm anaerobic thiab aerobic biochemical kev kho mob, tus lej ntawm effluent tus qauv. Ntxiv nws rau hauv dej nyob rau hauv ib qho kev faib ua feem thiab hnov mob rau 30 feeb.
2) ob qho tib si chromaticity thiab cod tshaj tus qauv tom qab lub pov tseg yog kho los ntawm anaerobic thiab aerobic biochemical kev kho, tus lej ntawm effluent tsis tau raws li cov qauv emission. Kev daws: Ntxiv cov high-efficievicy fluocculation decolorizulizulizulizuling discolivers, thiab thaum kawg siv cov flocculation thiab nag lossis daus, khoom-kua sib cais.
3) LAWV AMAMMIA Nitrogen Lub effluent ammonia nitrogen tsis tuaj yeem ntsib cov kev xav tau tam sim no. Kev daws: Ntxiv ammonia nitrogen remover, do lossis areate thiab sib tov, thiab hnov ntev li 6 feeb. Nyob rau hauv ib daim ntawv zeb, lub effluent ammonia nitrogen yog kwv yees li 40ppm, thiab cov tsis tuaj yeem ua tiav cov cai tiv thaiv kev tiv thaiv ib puag ncig.
Qhov xaus kev kho dej kom pom tseeb yuav tsum ua kom pom cov dej ntws, txo qis kev txhim kho kev txhim khu ntau txoj kev ntseeg tau, thiab lub sijhawm siv dej tsis zoo uas tuaj yeem siv cov peev txheej muaj txiaj ntsig hauv cov dej khib nyiab. Piv txwv li: cov txheej txheem flotation tuaj yeem rov qab cov khib nyiab fibrous hauv cov dej dawb, nrog tus nqi rov qab txog 95%, thiab cov dej ntshiab tuaj yeem rov qab siv; Kev kho cov txheej txheem kom tau txais kev kho mob Hydroxide, sodium sulfate, sodium sulfate thiab lwm cov ntsev ua ke nrog cov dej hauv cov dej dub. Kev kho tsis pub muaj pov tseg txoj kev kho tus qauv siv tus nqi hauv dej; Coagulgulation seduentation lossis flotation tuaj yeem tshem tawm cov khoom loj ntawm SS hauv cov dej khib nyiab; Txuj lom neeg siv nag lossis daus tuaj yeem kho tau; Txoj kev kho mob muaj peev xwm tshem tawm lub cev thiab cod, uas ua tau zoo dua rau Kraft daim ntawv txheej txheej. Ib qho ntxiv, tseem muaj kev thim osmosis, ultrafiltration, electrodialysis thiab lwm yam papermaking kev kho kom zoo siv hauv tsev thiab txawv teb chaws.
Lub Sijhawm Post: Jan-17-2025