Kev Lag Luam Tshuaj Kho Dej Kho Dej
Kev Lag Luam Kev Lag Luam Kev Kho Dej Nthuav Tawm Tswv Yim
Cov dej khib nyiab hauv kev lag luam tshuaj muaj ntau yam ntawm cov khoom tsis zoo thiab tsim kev puas tsuaj, nrog rau cov organic tebchaw, cov hlau hnyav, cov tshuaj lom neeg, thiab qib siab ntawm cov khib nyiab pov tseg. Qhov sib txawv thiab toxicity ntawm cov tebchaw no ua rau kev kho mob nyuaj, xav tau cov txheej txheem kho mob uas feem ntau koom nrog lub cev, tshuaj, thiab cov txheej txheem lom neeg.
Yam ntxwv ntawm Kev Lag Luam Kev Lag Luam Cov Dej Num
1. High Concentration of Pollutants: Chemical wastewater feem ntau muaj siab COD (Chemical Oxygen Demand) thiab BOD (Biological Oxygen Demand) ntau ntau vim cov organic thiab inorganic chemicals.
2. Cov tshuaj lom thiab phom sij: Cov dej khib nyiab tuaj yeem muaj cov tshuaj phom sij xws li phenols, cyanides, hlau hnyav, thiab ammonia, ua rau kev kho mob nyuaj.
3. Variability: Cov khoom siv tshuaj lom neeg kev lag luam cov dej khib nyiab tuaj yeem sib txawv nyob ntawm seb hom tshuaj raug tsim lossis ua tiav.
4. Refractory Pollutants: Ntau lub tebchaw hauv cov dej khib nyiab yog qhov nyuaj rau biodegrade, xav tau cov kev kho mob siab heev los rhuav tshem lawv.
Kev kho cov txheej txheem yam ntxwv ntawm kev lag luam tshuaj khib nyiab
1. Kev kho ua ntej: Qhov no suav nrog cov txheej txheem xws li coagulation, flocculation, thiab sedimentation kom tshem tawm cov khoom loj thiab txo cov load ntawm cov theem tom ntej.
2. Advanced Oxidation: Cov txheej txheem tshuaj xws li Fenton's reagent, ozone kev kho mob, lossis UV / H2O2 yog siv los rhuav tshem cov tshuaj lom thiab tsis yog biodegradable.
3. Kev Kho Mob Biological: Cov txheej txheem kho mob aerobic thiab anaerobic, xws li cov activated sludge thiab MBBR (Moving-Bed Biofilm Reactor), yog siv los ua kom cov organic teeb meem. Txawm li cas los xij, cov txheej txheem no tuaj yeem ua haujlwm tsawg dua rau cov pa phem refractory, thiab kev hloov pauv xws li bioaugmentation lossis siv cov microbes tshwj xeeb yuav xav tau.
4. Tertiary Treatment: Lim, adsorption (piv txwv li, siv cov pa roj carbon activated), thiab cov lim membrane tuaj yeem siv los tshem tawm cov pa phem ntxiv thiab xyuas kom cov dej ua tau raws li cov qauv tso tawm.
Cov Kev Xav Tau Tshwj Xeeb rau MBBR Thaum Siv Hauv Cov Khoom Siv Hluav Taws Xob Hluav Taws Xob rau Kev Lag Luam Tshuaj Hluav Taws Xob
1. Resilience to Toxic Pollutants: MBBR system yuav tsum tau tsim los tswj cov qib siab ntawm cov tshuaj lom neeg tsis muaj kev puas tsuaj rau biofilm ntawm cov nqa khoom. Cov khoom siv xov xwm uas tuaj yeem pab txhawb cov zej zog tshwj xeeb microbial kom txo qis cov tshuaj lom tshwj xeeb yog xav tau.
2. Lub Sijhawm Retention Siab: Cov dej khib nyiab hauv kev lag luam feem ntau xav tau lub sijhawm hydraulic thiab sludge khaws cia ntev dua vim qhov qeeb biodegradation ntawm cov pa phem refractory.
3. Aeration Control: Cov pa oxygen xav tau hauv cov dej khib nyiab yog siab, yog li MBBR system xav tau kev ua kom muaj zog kom tswj tau cov mob aerobic. Cov khoom siv aeration yuav tsum muaj zog thiab kho tau los tswj cov khoom hloov pauv.
4. Kev them nyiaj yug Biofilm: Cov neeg nqa khoom siv hauv MBBR yuav tsum tau kho kom zoo rau cov tshuaj lom neeg uas raug kho. Qee zaum, nws yuav tsim nyog siv biofilms uas tau ntxiv nrog cov kab mob tshwj xeeb uas muaj peev xwm ua rau cov tshuaj tawv tawv.
5. Kev tshem tawm COD / BOD muaj txiaj ntsig: Vim muaj COD / BOD ntau ntau, lub kaw lus yuav tsum muaj peev xwm txo qis cov txiaj ntsig no mus rau qib siab, txawm tias thaum muaj kev poob siab.
Xaus
Kev kho cov dej khib nyiab hauv kev lag luam yuav tsum tau ua kom haum raws li qhov nyuaj ntawm cov pa phem. Thaum MBBR tuaj yeem yog qhov kev xaiv kho mob zoo, nws yuav tsum tau tsim tshwj xeeb los tswj cov tshuaj lom neeg siab, tsis muaj biodegradable tebchaw, thiab cov yam ntxwv ntawm cov dej khib nyiab hloov pauv. Kev txiav txim siab tshwj xeeb xws li kev xaiv cov khoom nqa khoom, lub sijhawm khaws cia, thiab lub tshuab aeration yog qhov tseem ceeb rau kev kho kom zoo.