Zero discharge industrial wastewater kho yog lub hom phiaj tseem ceeb hauv kev tiv thaiv ib puag ncig, los ntawm cov txheej txheem thev naus laus zis kom ua tiav kev kho cov dej khib nyiab thiab kev siv cov peev txheej, kom txo tau ib puag ncig muaj kuab paug, kev tiv thaiv cov peev txheej dej yog qhov tseem ceeb. Kuv yuav qhia ob peb qhov kev lag luam loj hauv kev kho dej khib nyiab xoom tso tawm thev naus laus zis.
Ua ntej tshaj plaws, kev kho lub cev thev naus laus zis yog ib txoj hauv kev tseem ceeb kom ua tiav xoom tso tawm kev kho dej khib nyiab. Ntawm lawv, cov tshuab sib cais membrane yog ib txoj kev kho lub cev muaj zog thiab txuag hluav taws xob. Los ntawm kev siv cov ntaub ntawv membrane nrog qhov sib txawv ntawm qhov pore, cov khoom tsis zoo thiab cov hlau hnyav ions hauv cov dej khib nyiab tau raug cais kom ua tiav lub hom phiaj ntawm kev lim dej. Dual-membrane filtration technology, piv txwv li cov txheej txheem ntawm kev sib txuas ultrafiltration membrane thiab thim rov qab osmosis membrane, yog ib qho ntawm cov kev siv tseem ceeb ntawm kev sib cais membrane. Cov thev naus laus zis no tuaj yeem ua tiav ntau qhov sib sib zog nqus pom ntawm cov dej khib nyiab, tshem tawm cov khoom tsis zoo, thiab rov ua dua cov dej khib nyiab kom ua tiav xoom paug.
Thib ob, kev siv tshuaj kho mob kuj yog ib txoj hauv kev tseem ceeb kom ua tiav xoom emission muaj kev kho dej khib nyiab. Redox thev naus laus zis hloov cov pa phem hauv cov dej khib nyiab rau hauv cov khoom tsis muaj tshuaj lom thiab tsis muaj teeb meem los ntawm cov tshuaj lom neeg, yog li ua tiav kev kho dej khib nyiab sib sib zog nqus. Advanced oxidation technologies, xws li Fenton oxidation thiab ozone oxidation, tuaj yeem tshem tawm qhov nyuaj-rau-biodegrade organic teeb meem hauv cov dej khib nyiab thiab txhim kho biochemistry ntawm cov dej khib nyiab. Tsis tas li ntawd, kev siv tshuaj los nag lossis daus, ion txauv txoj kev, thiab lwm yam kuj tseem siv cov cuab yeej siv tshuaj kho mob, uas tuaj yeem tshem tawm cov hlau hnyav ions thiab tshem tawm cov teeb meem hauv cov dej khib nyiab.
Kev kho mob lom neeg siv tshuab yog ib feem tseem ceeb ntawm kev siv xoom tawm kev kho dej khib nyiab. Cov cuab yeej siv tshuaj lom neeg siv cov metabolism hauv cov kab mob kom decompose thiab hloov cov organic hauv cov dej khib nyiab. Kev kho cov thev naus laus zis feem ntau suav nrog kev siv cov sludge, biofilm, thiab kev zom zaub mov anaerobic. Cov thev naus laus zis no tuaj yeem tshem tawm cov pa phem hauv cov dej khib nyiab, txo qhov kev xav tau biochemical oxygen (BOD) thiab tshuaj lom neeg oxygen xav tau (COD) ntawm cov dej khib nyiab, thiab ua tiav kev kho dej tsis zoo.
Ntxiv nrog rau cov txheej txheem thev naus laus zis saum toj no, muaj qee cov thev naus laus zis tshiab tseem ua lub luag haujlwm tseem ceeb hauv kev kho dej khib nyiab xoom pov tseg. Piv txwv li, evaporation crystallisation tshuab ua tiav cov kua sib cais ntawm cov dej khib nyiab los ntawm evaporating cov dej hauv cov dej khib nyiab kom cov ntsev yaj hauv nws crystallize thiab precipitate tawm. Cov thev naus laus zis no tuaj yeem tshem tawm cov ntsev thiab cov khoom tsis zoo ntawm cov dej khib nyiab thiab ua tiav lub hom phiaj ntawm xoom paug.
Tsis tas li ntawd, kev siv thev naus laus zis rov qab los kuj yog tus yuam sij rau kev ua tiav xoom tawm hauv kev kho dej khib nyiab. Los ntawm kev rho tawm thiab rov ua kom cov khoom muaj txiaj ntsig zoo hauv cov dej khib nyiab, tsis tsuas yog txo cov dej khib nyiab, tab sis kuj tuaj yeem ua tiav cov khoom siv rov ua dua tshiab. Piv txwv li, hnyav hlau ions thiab cov organic teeb meem hauv cov dej khib nyiab tuaj yeem rov qab tau thiab siv los ntawm cov txheej txheem tshwj xeeb kom ua tiav kev siv cov dej khib nyiab.
Hauv cov ntsiab lus, muaj ntau txoj hauv kev los kho cov dej khib nyiab uas tsis muaj paug, suav nrog kev kho lub cev, kev siv tshuaj lom neeg, tshuaj lom neeg siv tshuab thiab kev siv thev naus laus zis. Kev siv cov thev naus laus zis no yuav tsum tau xaiv thiab ua kom zoo raws li qhov xwm txheej ntawm cov dej khib nyiab thiab cov kev kho mob, txhawm rau ua tiav lub hom phiaj ntawm kev txuag hluav taws xob, txuag hluav taws xob thiab ib puag ncig tus phooj ywg kev kho dej khib nyiab nrog xoom paug. Nrog rau kev vam meej tas mus li thiab kev tsim kho tshiab ntawm kev tshawb fawb thiab thev naus laus zis, nws ntseeg tau tias yav tom ntej yuav muaj kev tshaj lij tshaj lij siv hauv kev lag luam kev kho dej khib nyiab, los txhawb qhov ua rau muaj kev tiv thaiv ib puag ncig mus rau qib siab dua.
Lub sij hawm xa tuaj: Plaub Hlis-29-2024