Kev Kho Technology Ntawm Tannery Wastewater
Feb 14, 2023
Tam sim no qhov xwm txheej ntawm Kev Lag Luam thiab cov yam ntxwv ntawm Tannery Wastewater.
Hauv lub neej niaj hnub, hnab, khau tawv, khaub ncaws tawv, tawv sofas thiab lwm yam khoom tawv tawv yog nyob txhua qhov chaw. Nyob rau hauv xyoo tas los no, nrog rau kev loj hlob sai ntawm tawv kev lag luam, qhov tso tawm ntawm tannery khib nyiab tau maj mam dhau los ua ib qho tseem ceeb ntawm kev lag luam muaj kuab paug.
Kev ua tawv tawv feem ntau suav nrog peb theem: kev npaj, tanning thiab tiav. Hauv seem npaj ua ntej tanning, cov dej phwj tuaj yog los ntawm kev ntxuav, so, depilation, liming, deashing, softening, degreasing; Cov pa phem tseem ceeb suav nrog cov pov tseg cov organic, cov pov tseg inorganic thiab cov organic tebchaw. Cov dej khib nyiab hauv ntu tanning feem ntau yog los ntawm kev ntxuav, pickling thiab tanning, thiab cov pa phem tseem ceeb yog cov ntsev inorganic thiab hnyav hlau chromium. Cov dej khib nyiab hauv qhov ua tiav feem ntau yog los ntawm kev ntxuav, squeezing, dyeing, fatliquoring thiab detusting dej phwj, thiab cov pa phem yog dyes, roj thiab organic compounds. Yog li ntawd, tannery wastewater muaj cov yam ntxwv ntawm cov dej ntau, kev hloov pauv loj ntawm cov dej zoo thiab muaj nuj nqis, cov khoom muaj kuab paug siab, siab alkalinity, siab chromaticity, siab cov ntsiab lus ntawm tshem tawm cov khib nyiab, biodegradability zoo thiab lwm yam.
Sulfur-muaj cov dej khib nyiab: hais txog cov hmoov tshauv leaching pov tseg cov kua uas ua los ntawm cov hmoov tshauv-alkali depilation hauv cov txheej txheem tannery thiab cov dej khib nyiab los ntawm txheej txheem ntxuav.
Degreasing wastewater: yog hais txog cov kua khib nyiab tsim los ntawm kev kho cov roj rawhide nrog surfactant thiab cov dej khib nyiab los ntawm cov txheej txheem ntxuav hauv cov txheej txheem ntawm tawv thiab ua plaub.
Chromium-muaj dej khib nyiab: yog hais txog cov dej khib nyiab chromium uas tsim nyob rau hauv cov txheej txheem ntawm chrome tanning thiab chrome retanning thiab coj cov dej khib nyiab los ntawm cov txheej txheem ntxuav.
Comprehensive wastewater: yog hais txog txhua yam ntawm cov dej khib nyiab uas tsim los ntawm tannery thiab fur processing enterprises los yog centralized ua qhov chaw thiab ncaj qha los yog indirectly tawm mus rau hauv cov dej pov tseg kev kho tej yaam num (xws li cov txheej txheem ntau lawm cov dej khib nyiab, Hoobkas hauv tsev dej phwj).
Hom kev kho mob ntawm Tannery Wastewater.
Txoj kev yooj yim ntawm kev kho dej khib nyiab yog siv ntau yam kev siv los cais, tshem tawm, rov ua dua thiab rov siv cov pa phem uas muaj nyob hauv cov dej khib nyiab, lossis hloov mus rau hauv cov khoom tsis zoo los ntxuav cov dej.
Muaj ntau txoj hauv kev los kho cov dej phwj tuaj, uas tuaj yeem muab faib ua plaub pawg, uas yog, kev kho mob lom neeg, kev kho lub cev, kev kho tshuaj thiab kev kho ntuj.
1. Kev kho mob lom.
Los ntawm cov metabolism hauv cov kab mob, cov tshuaj, colloid thiab micro-suspended organic pollutants nyob rau hauv cov dej khib nyiab tuaj yeem hloov mus rau hauv cov khoom ruaj khov thiab tsis muaj teeb meem. Raws li qhov sib txawv ntawm cov kab mob ua haujlwm, kev kho mob lom neeg tuaj yeem muab faib ua ob hom: kev kho aerobic lom thiab kev kho anaerobic lom.
Kev kho aerobic lom yog siv dav hauv kev kho dej khib nyiab lom neeg. Raws li nws cov txheej txheem sib txawv, kev kho mob aerobic tuaj yeem muab faib ua cov txheej txheem sludge thiab txheej txheem biofilm. Activated sludge txheej txheem nws tus kheej yog hom kev kho mob, nws muaj ntau hom kev ua haujlwm. Cov cuab yeej kho mob ntawm cov txheej txheem biofilm suav nrog cov lim dej lom neeg, cov khoom siv roj ntsha, cov khoom siv hluav taws xob sib txuas oxidation tank, cov khoom siv roj ntsha hauv lub txaj thiab lwm yam. Biological oxidation pas dej txoj kev tseem hu ua natural biological treatment method. Kev kho mob anaerobic, tseem hu ua kev kho mob txo qis, feem ntau yog siv los kho cov dej khib nyiab siab thiab cov sludge.
ob.. Txoj kev kho lub cev.
Cov txheej txheem ntawm kev sib cais ntawm lub cev thiab rov qab los ntawm cov kuab paug tsis huv (nrog rau cov yeeb yaj kiab roj thiab cov roj tee) hauv cov dej khib nyiab tuaj yeem muab faib ua txoj kev sib cais ntawm lub ntiajteb txawj nqus, txoj kev sib cais centrifugal thiab sieving interception method. Cov chav kho mob ntawm lub ntiajteb txawj nqus sib cais yog sedimentation, ntab (air floatation), thiab lwm yam., thiab cov khoom siv kho mob sib xws yog xuab zeb settling tank, sedimentation tank, roj sib cais tank, huab cua flotation tank thiab nws cov khoom siv ntxiv. Centrifugal cais nws tus kheej yog ib hom kev kho mob. cov khoom siv kho mob siv yog centrifuge thiab hydrocyclone, thiab lwm yam. Lub sieve interception txoj kev muaj ob chav ua haujlwm: daim phiaj interception thiab pom. Lub qub siv grille thiab tshuaj ntsuam, thaum tom kawg siv xuab zeb lim thiab microporous lim. Txoj kev kho mob raws li lub hauv paus ntsiab lus ntawm kev sib pauv cua sov kuj yog rau txoj kev kho lub cev, thiab nws cov kev kho mob suav nrog evaporation, crystallization thiab lwm yam.
3. Txoj kev kho tshuaj.
Kev kho cov dej khib nyiab los ntawm tshuaj lom neeg cov tshuaj tiv thaiv thiab loj hloov mus rau kev sib cais thiab tshem tawm cov kuab paug los yog colloidal los yog hloov mus rau hauv cov khoom tsis zoo. Hauv kev kho tshuaj, cov chav kho mob raws li cov tshuaj tiv thaiv uas tsim los ntawm kev ntxiv cov tshuaj yog coagulation, neutralization, redox, thiab lwm yam, thaum cov chav kho mob raws li kev hloov pauv loj yog rho tawm, stripping, stripping, adsorption, ion pauv, electrodialysis thiab thim rov qab osmosis. Ob chav kho mob tom kawg tseem hu ua membrane cais tshuab. Ntawm lawv, chav kho mob siv cov kev hloov pauv loj muaj ob qho tib si tshuaj thiab lwm yam kev ua haujlwm ntawm lub cev, yog li nws tuaj yeem raug cais tawm ntawm txoj kev kho tshuaj thiab dhau los ua lwm hom kev kho mob, uas yog hu ua lub cev thiab tshuaj.