Rau cov thawj coj hauv tsev thiab cov kws tsim khoom ib puag ncig hauv kev lag luam zaub mov thiab dej haus (F&B), kev tswj dej khib nyiab yog ntau tshaj li qhov yuav tsum tau muaj kev tswj hwm- nws yog ib qho kev sib tw ua haujlwm tseem ceeb. Txawm hais tias koj khiav ib qho chaw ua cov nqaij, ib lub chaw siv mis nyuj, lossis cov dej haus ntau lawm, koj cov dej khib nyiab yog qhov tsis yooj yim rau kev kho. Nws feem ntau yog tus cwj pwm los ntawm qib siab ntawm Cov Roj, Roj, thiab Roj (FOG), Tag Nrho Suspended Solids (TSS), thiab cov organic loads siab ( ntsuas raws li BOD / COD).
Tshem tawm cov dej khib nyiab no yam tsis muaj kev kho kom zoo tsis yog tsuas yog muaj kev pheej hmoo loj rau ib puag ncig nplua tab sis tuaj yeem ua rau muaj kev puas tsuaj rau cov kab mob hauv qab dej. Yog li, dab tsi yog qhov kev daws teeb meem zoo tshaj plaws? Nkag mus rau Dissolved Air Flotation (DAF) system-tus qauv kev lag luam kub kom ua tau zoo, tus nqi- siv dej pov tseg ua ntej.
Vim li cas thiaj xaiv DAF System raws li koj qhov kev daws teeb meem tseem ceeb?
Ib txwm lub ntiajteb txawj nqus sedimentation (clarifiers) tso siab rau cov khoom hnyav dua li dej los daws lawv. Txawm li cas los xij, F&B cov dej khib nyiab yog tag nrho ntawm cov kab mob sib kis zoo li cov rog, roj, thiab cov organic fibers uas zoo li ntab lossis nyob twj ywm. Nov yog qhov uas DAF thev naus laus zis ci ntsa iab.
Kev Tshawb Fawb Tom Qab DAF:
Lub tshuab DAF ua haujlwm los ntawm kev ua kom cov cua nkag mus rau hauv dej hauv qhov siab siab (feem ntau 0.3-0.5 MPa) los tsim cov tshuaj saturated. Thaum cov dej siab no tso tawm rau hauv lub tank flotation ntawm atmospheric siab, nws tsim ntau lab ntawm microscopic npuas (20-50 microns inch).
Cov micro- npuas no txuas rau cov khib nyiab, FOG, thiab colloidal hais, ua "npua-particle" aggregates. Vim tias cov aggregates no tsawg dua cov dej, lawv sai sai ntab mus rau saum npoo, tsim ib daim pam sludge uas yooj yim tshem tawm los ntawm kev siv tshuab skimming.
DAF vs. Traditional Sedimentation:
● Cov Nqi Tshem Tawm Zoo Tshaj Plaws: DAF cov tshuab tuaj yeem ua tiav 90–98% kev tshem tawm TSS thiab 90–95% tshem tawm cov roj thiab roj, qhov ua tau zoo tshaj cov pa tso tsheb hlau luam.
● Kev ua haujlwm nrawm dua: Lub sijhawm hydraulic khaws cia rau DAF yog luv dua (feem ntau 5–35 feeb) piv rau cov dej phwj tuaj, tso cai rau cov cuab yeej siv me me dua.
● Kev tuav lub teeb pom kev: Tsis zoo li cov neeg nyob hauv lub ntiajteb txawj nqus, DAFs tau tsim tshwj xeeb los ntes lub teeb, buoyant organic teeb meem tshwm sim hauv kev ua zaub mov.
Daim Ntawv Thov Tseem Ceeb Scenario hauv F&B Kev Lag Luam
Kev siv DAF system tsis yog hais txog kev ua raws cai xwb; nws yog hais txog kev ua hauj lwm efficiency thiab sustainability.
1. Tiv thaiv cov kab mob hauv nruab nrab
Cov concentrations siab ntawm FOG thiab TSS yog cov yeeb ncuab ntawm kev kho mob lom (xws li cov tshuab ua haujlwm sludge lossis MBBR systems). FOG tuaj yeem npog cov kab mob microbial, cuam tshuam kev hloov pauv oxygen thiab qhov tseem ceeb "suffocating" cov kab mob uas ua rau rhuav tshem cov organic. Los ntawm kev siv DAF ua cov kauj ruam ua ntej, koj tuaj yeem txo COD / BOD load los ntawm 40-70%, tiv thaiv kev ntxhov siab, txo cov nqi hluav taws xob, thiab ua kom koj cov theem lom neeg ua haujlwm zoo.
2. Muab pov tseg rau hauv cov nyiaj tau los (Resource Recovery)
Hauv cov khoom xws li cov khoom noj siv mis lossis cov roj ua noj, cov khib nyiab thiab cov rog uas tau ntes los ntawm DAF system feem ntau muaj nqi. Es tsis txhob them rau tshem tawm cov kua sludge, cov thickened ntab (feem ntau 3-5% cov khib nyiab qhuav) tuaj yeem dewatered thiab muag li tsiaj cov khoom xyaw lossis xa mus rau cov chaw uas hloov cov roj pov tseg rau hauv biodiesel. Qhov no hloov tus nqi pov tseg rau hauv cov nyiaj tau los uas muaj peev xwm.
3. Kev siv dej rov qab thiab kev ruaj ntseg
Nrog kev nce siab kom txo cov dej haus, ntau F&B cov nroj tsuag tab tom nrhiav kom rov siv cov txheej txheem dej. DAF system muab cov khoom zoo tshaj - zoo tshaj plaws uas tuaj yeem ua polished ntxiv (piv txwv li, los ntawm kev pom lossis cov txheej txheem membrane) rau cov uas tsis yog - rov siv dua, xws li ntxuav- dej los yog cov tshuaj pleev kom txias.
Tiag -Kev cuam tshuam ntiaj teb: Cov ntaub ntawv & Automation
Niaj hnub nimno DAF systems yog tsim los rau kev ntseeg tau thiab yooj yim ntawm kev siv. Piv txwv li, nyob rau hauv daim ntawv thov ntawm cov nqaij nruab deg los yog nqaij, ib tug zoo -tuned DAF system tuaj yeem txo qis TSS qib ntawm 2,000 mg / L mus rau qis dua 100 mg / L.
Txhawm rau ua tiav qhov kev ua tau zoo tshaj plaws, DAFs feem ntau ua ke nrog kev siv tshuaj tua kab mob tsis siv neeg. Los ntawm kev txhaj tshuaj coagulants (xws li PAC) thiab flocculants (xws li PAM) ua ntej lub flotation tank, lub kaw lus neutralizes particle tsub thiab tsim loj "flocs" uas yooj yim dua rau micro- npuas mus ntes.
Cov txiaj ntsig ua haujlwm:
● Tsis siv neeg puv: Cov chav nyob niaj hnub tuaj nrog PLC tswj vaj huam sib luag uas ua kom lub zog skimming, sludge paug, thiab txawm tias tshuaj lom neeg raws li tus nqi ntws.
● Compact Design: Skid-mounted, ntim cov tshuab DAF tuaj yeem ntsia tau sai nrog kev ua haujlwm hauv pej xeem tsawg, ua rau lawv zoo meej rau cov chaw uas muaj qhov chaw tsawg.
● Kev Kho Mob Tsawg: Nrog tsawg dua qhov txav mus los ntawm cov tshuab ua kom pom tseeb thiab tus kheej - cov txheej txheem ntxuav, lub sijhawm ua haujlwm poob qis heev.
Npaj los ua kom zoo dua koj qhov kev kho dej khib nyiab?
Kev nqis peev nyob rau hauv qhov siab -Qhov Zoo Tshaj Plaws Air Flotation system yog ib qho kev txiav txim siab tshaj plaws uas F&B qhov chaw tuaj yeem ua tau. Nws ua kom muaj kev ua raws li ib puag ncig, tiv thaiv koj cov khoom siv roj ntsha kim, thiab tuaj yeem txo koj cov nqi ua haujlwm tag nrho los ntawm kev rov qab los.
Puas yog koj tawm tsam nrog FOG siab lossis TSS qib hauv koj cov nroj tsuag effluent?
Tsis txhob cia cov teeb meem dej khib nyiab qeeb koj cov khoom. Hu rau peb pab pawg engineering hnub no kom muaj kev sab laj dawb. Peb tuaj yeem pab koj ntsuas koj cov dej tshwj xeeb thiab tsim cov kev daws teeb meem DAF uas haum rau koj cov peev nyiaj thiab qhov chaw.
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