Cov txheej txheem kev kho rau cov khoom noj khoom haus high-chroma kev lag luam dej khib nyiab hauv tsev thiab txawv teb chaws feem ntau suav nrog: kev siv lub cev, kev siv tshuaj thiab cov kev siv tshuaj lom. Tam sim no, cov qauv siv feem ntau suav nrog adsorption, coagulation, oxidation, txo qis, electrolysis, biochemistry, thiab lwm yam.
Lub cev txoj kev
Adsorption txujci
Cov txheej txheem adsorption yog ib txoj kev uas cov khoom ntxeem tau siv los ua adsorbents rau adsorb-chromaticity tshuaj hauv cov dej khib nyiab ntawm lawv cov chaw. Cov paib tshaj plaws uas siv tau yog cov pa roj carbon activated, lub ntiaj teb diatomaceous, coke hmoov, thiab macroporous adsorption cob.
Cov pa roj carbon ntau muaj cov yam ntxwv ntawm xoob thiab dej, muaj ntau qhov tsis txaus, qhov chaw tshwj xeeb hauv cheeb tsam, thiab lwm yam.
Cov pa roj carbon tshuab ua kom muaj pa roj carbon kim yog ua kom rov ua dua tshiab, thiab nws yog feem ntau siv los kho qee qhov me me ntawm cov khoom siv tsis muaj dej tsis zoo. Boiler cinder, steel slag, coke hmoov thiab cov khoom lag luam pov tseg (xws li bagasse, txiv laum huab xeeb, thiab lwm yam) muaj qee qhov peev xwm adsorption thiab tuaj yeem hloov cov roj carbon activated.
Agglutination
Txoj kev agglutination siv cov hlau hydroxide lossis organometallic polymer adsorption lossis ion bridging rau decolorization. Hom kab ke no tau zoo tshaj plaws rau cov khoom me nrog qhov loj me hauv ntau ntawm 10-9 nm txog 10-8 nm.
Lub hauv paus ntsiab lus ntawm cov qauv no yog ntxiv cov paj ntoo nrog kev them nyiaj lossis cov haujlwm polar ua haujlwm kom tshem tawm cov txiaj ntsig ntawm electrostatic rov ua haujlwm ntawm cov qias neeg ntawm cov qauv qub, thiab txhawb lawv cov kev sib sau thiab txo kev sib cais, thiaj li ua tiav lub hom phiaj ntawm kev sib cais thiab decolorization Cov.
Cov kev siv flocculants muaj xws li inorganic flocculants thiab polymer flocculants.
Inorganic flocculants suav nrog aluminium series [feem ntau yog kev sib xyaw daws ntawm Al2O4 lossis (NH4) 2SO4], hlau koob [FeSO4, Fe2 (SO4) 3 lossis FeCI3, thiab lwm yam], thiab cov kua qaub-puag sib xyaw ua ke siv hloov pH thiab ua tej yam tshuaj txiav txim Tus neeg saib xyuas. Inorganic flocculants muaj cov txiaj ntsig zoo ntawm kev kho cov xim lim dej, tab sis nws tsis zoo ib yam li pH, thiab yuav muaj cov txiaj ntsig zoo nyob rau hauv qab qhov tsim nyog pH nkaus xwb.
Cov polymer flocculant muaj lub cev hnyav molecular, muaj zog muaj peev xwm khi rau cov lus me me, kom tsawg dua, kev nrawm nrawm, thiab hloov dua siab tshiab rau pH dua li cov inorganic flocculants.
tshuaj method
Redox txujci
Txoj kev tiv thaiv oxidation-txo feem ntau siv cov kab mob redox xws li ozone, peroxide, dithionite, hypochlorite, thiab lwm yam los kho cov xim siab ua rau cov dej khib nyiab tawg ob zaug ua ke hauv cov organic molecules kom ua tiav lub hom phiaj ntawm decolorization.
Muaj ntau cov lus ceeb toom hais txog kev siv oxidation-txo txoj hauv kev los kho cov zaub mov muaj cov xim khib nyiab siab, thiab kev nce qib tshiab tau tsim nyob rau hauv ntau lub ntsiab lus.
Kev siv tshuab hluav taws xob
Kev siv hluav taws xob kho cov dej khib nyiab feem ntau tsis tas yuav ntxiv cov tshuaj, kev kho tom qab yooj yim, tus hneev me me, kev tswj kom yooj yim, thiab hu ua cov txheej txheem kev kho kom huv. Nrog txoj kev txhim kho ntawm lub zog hluav taws xob, txoj kev siv hluav taws xob hluav taws xob tau maj mam dhau los ua kev siv dej kho tshuab.
Lub tshuab hluav taws xob electrodeical txoj kev txiav txim siab tuaj yeem muab faib ua cov txheej txheem hluav taws xob ob sab thiab ntau hom txheej txheem electrode.
Ob txoj kab hluav taws xob txheej txheem siv ob daim hlau soluble lossis insoluble raws li electrodes, thiab ncaj qha tam sim no tau thov kom ua tiav lub hom phiaj ntawm decolorization los ntawm cov electrochemical redox cov tshuaj tiv thaiv uas tshwm sim hauv electrolytic cell.
Cov kab hluav taws xob ntau txheej txheem yog los sau cov pob zeb los yog lwm cov khib nyiab zoo li cov khoom siv hluav taws xob ua haujlwm nruab nrab ntawm cov nplaim hluav taws xob ob-txheej, thiab cov hluav taws xob hluav taws xob tseem ceeb siv tam sim no. Qhov saum npoo ntawm cov khoom siv ua haujlwm ua haujlwm electrode raug them thiab dhau los ua hluav taws xob tshiab, yog li ua tiav cov decolorization los ntawm hom phiaj hluav taws xob.
Kev siv roj ntsha
Txoj kev qhib sludge txoj kev
Txoj hauv kev sludge txoj kev siv lub tshuab ua kom sludge uas muaj ntau ntawm cov kab mob me me kom nqus thiab oxidize thiab rhuav tshem cov organic lossis inorganic muaj kuab paug rau hauv cov dej phwj, yog li ntxuav cov dej phwj tuaj. Vim tias lub peev xwm loj thiab kev ua haujlwm siab ntawm kev kho dej, txoj kev no tau siv dav hauv kev kho cov dej khib nyiab.
Kev kho mob Anaerobic
Txoj kev kho dej tshuaj lom neeg yog ib qho kev lim dej rau cov lim dej uas siv cov txheej txheem sab nrauv thiab tso cov anaerobes ua kom cov macromolecular organic teeb meem rau hauv cov dej phwj mus rau cov khoom sib nqus, thiab tom qab ntawd hloov nws mus rau hauv methane thiab carbon dioxide.
Cov txheej txheem A / PAC-MAS (kev siv lub tshuab ua hluav taws xob / ua kom cov pa roj carbon tshuab hloov txoj kev ua kua sludge) yog siv los kho cov kua ntses ua kua khib nyiab. Los ntawm kev sib koom ua ke ntawm cov kab mob tseem ceeb decolorization thiab PAC decolorization, kua ntses ua kua ntses ntau lawm ua rau cov dej khib nyiab nrog ntau tshaj 200 zaus tuaj yeem kho tau zoo. Lub chromaticity ntawm lub effluent tuaj yeem ruaj khov hauv qab 40 zaug.