Hauv kev tsim khoom lag luam, kev kho dej khib nyiab yog qhov tseem ceeb uas tsis tuaj yeem saib xyuas. Ntau hom kev lag luam khib nyiab muaj lawv tus kheej cov yam ntxwv thiab xav tau txoj kev kho mob. Tsab ntawv xov xwm no tsom mus rau cov yam ntxwv tseem ceeb thiab kev kho mob rau kev lag luam khoom noj khoom haus cov dej khib nyiab thiab dye ntau lawm cov dej khib nyiab.
Cov yam ntxwv thiab kev kho cov khoom noj khoom haus kev lag luam khib nyiab
Vim muaj ntau yam khoom siv raw thiab ntau hom khoom hauv kev lag luam khoom noj khoom haus, cov dej khib nyiab generated sib txawv ntawm cov dej zoo thiab ntau. Cov yam ntxwv tseem ceeb ntawm cov dej khib nyiab no suav nrog cov ntsiab lus siab ntawm cov organic teeb meem thiab cov khib nyiab tshem tawm, uas ua rau lwj. Yog tias tshem tawm tsis kho, nws tuaj yeem ua rau eutrophication ntawm lub cev dej, ua rau cov tsiaj hauv dej thiab ntses tuag. Tsis tas li ntawd, nws tuaj yeem tsim cov ntxhiab tsw phem los ntawm cov organic sediment, ua rau cov dej tsis zoo thiab ua rau ib puag ncig.
Rau kev kho cov khoom noj khoom haus cov dej khib nyiab, qhov tsim nyog pretreatment feem ntau yuav tsum tau ua raws li cov yam ntxwv tshwj xeeb ntawm cov dej zoo, ua raws li cov kev kho mob lom. Rau cov dej khib nyiab uas yuav tsum tau ua kom zoo zoo lossis cov ntsiab lus tshwj xeeb ntawm cov organic, kev sib xyaw ua ke ntawm cov khoom siv tshuaj lom neeg xws li aeration tanks, biofilters, lossis multi-theem biological rotating disks tuaj yeem ua haujlwm. Tsis tas li ntawd, anaerobic- cov txheej txheem kho aerobic ua ke kuj yog ib qho kev xaiv zoo.
Cov yam ntxwv thiab kev kho ntawm Dye Production Wastewater
Dye ntau lawm cov dej khib nyiab pov tseg tag nrho cov yam ntxwv sib txawv. Cov dej khib nyiab no feem ntau muaj cov kua qaub, alkalis, ntsev, halogens, hydrocarbons, amines, nitro compounds, dyes, thiab intermediates, thiab lwm yam. Qee qhov kuj tseem muaj cov tshuaj lom xws li pyridine, cyanide, phenols, thiab benzidine, nrog rau cov hlau hnyav xws li mercury, cadmium, thiab chromium. Cov dej khib nyiab no yog qhov sib xyaw ua ke, muaj kuab lom heev, thiab nyuaj rau kev kho.
Kev kho cov dej khib nyiab yuav tsum xaiv txoj kev tsim nyog raws li cov khoom tshwj xeeb ntawm cov dej khib nyiab thiab cov kev xav tau tawm. Cov cuab yeej kho mob feem ntau suav nrog:
- Kev tshem tawm cov khoom tsis huv thiab cov khoom tsis zoo: Cov txheej txheem coagulation thiab pom.
- Kev tshem tawm cov organic teeb meem thiab cov tshuaj lom: Feem ntau yog tshuaj oxidation, kev kho mob lom neeg, thiab rov qab osmosis.
- Decolorization: Feem ntau koom nrog kev ua ke ntawm coagulation thiab adsorption.
- Hnyav hlau tshem tawm: Ion pauv txoj kev siv tau.
Xaus
Kev lag luam khoom noj khoom haus khib nyiab thiab tshuaj zas xim cov dej khib nyiab sawv cev rau ob hom kev lag luam effluents - yav dhau los tus yam ntxwv los ntawm cov organic cov ntsiab lus siab, thaum lub tom kawg yog qhov tseem ceeb rau nws cov complex muaj pes tsawg leeg thiab toxicity siab. Kev nkag siab txog cov yam ntxwv ntawm cov dej khib nyiab no thiab siv cov thev naus laus zis kho kom zoo yog qhov tseem ceeb rau kev tiv thaiv ib puag ncig dej thiab ua kom muaj kev txhim kho ruaj khov. Hauv kev siv tswv yim, kev sib xyaw ntawm ntau txoj kev kho mob feem ntau yog tsim nyog kom ua tiav cov txiaj ntsig zoo.