Qhov txawv txav ntawm cov pa oxygen (DO) cov concentrations yog ib qho teeb meem tshwm sim thiab nyuaj hauv cov nroj tsuag kho dej khib nyiab, cuam tshuam tsis yog tsuas yog cov dej ntws zoo xwb tab sis kuj muaj peev xwm ua rau muaj kev cuam tshuam ntawm cov sludge bulking thiab nce zog noj. Ntxiv rau qhov kev hloov pauv ntawm cov pa aeration thiab kev ntsuas dej ua ntej, cov hauv qab no muab cov kev daws teeb meem siab tshaj plaws rau DO anomalies los ntawm peb qhov loj: cov thev naus laus zis tshiab thaum muaj xwm txheej ceev, kev txhim kho thiab kev ua kom zoo dua qub, thiab hla- kev qhuab qhia kev sib koom ua ke.
Emergency Innovative Technologies: Ua kom nrawm nrawm ntawm DO Concentration Dilemma
(I) Txhim Kho Aeration Technology
Nanobubble Aeration Technology
Lub hauv paus ntsiab lus thiab qhov zoo: Nanobubbles, nrog ib txoj kab uas hla ntawm tsuas yog 10-200 nm, muaj qhov tshwj xeeb ntawm thaj chaw loj, qeeb nce ceev, thiab kev ua haujlwm siab. Piv rau cov txheej txheem aeration ib txwm, nanobubble aeration tuaj yeem ua rau kev siv cov pa oxygen ntau dua 80%, uas yog 2-3 npaug ntawm microporous aeration. Nyob rau hauv qhov xwm txheej kub ntxhov nrog kev poob qis hauv DO concentration, nanobubbles tuaj yeem nce cov pa oxygen hauv dej sai sai yam tsis muaj kev cuam tshuam rau lub zej zog microbial.
Daim Ntawv Thov: Ib tsob nroj kho dej khib nyiab tau ntsib kev nce siab ntawm cov organic teeb meem tam sim ntawd, ua rau cov pa oxygen yaj (DO) concentration poob ntawm 2.5 mg / L mus rau 0.8 mg / L. Tom qab ua kom muaj xwm txheej ceev ntawm nanobubble aeration system, DO concentration rebounded rau saum 2 mg / L nyob rau hauv tsuas yog 30 feeb thiab rov qab mus rau qib qub tom qab 2 teev, zam qhov kev pheej hmoo ntawm effluent tshaj cov qauv.
Pure Oxygen Aeration Emergency System
Cov xwm txheej siv tau: Thaum cov tshuab pa aeration tsis tuaj yeem ua tau raws li qhov xav tau ntawm cov pa thaum muaj xwm txheej ceev, cov pa ntshiab oxygen tuaj yeem siv los ua ib qho kev pab thaum muaj xwm ceev. Siab - concentration oxygen yog muab los ntawm cov kua oxygen cia tso tsheb hlau luam lossis cov tshuab hluav taws xob oxygen thiab ncaj qha mus rau hauv lub tank kev kho mob lom neeg, ua kom cov DO concentration hauv lub sijhawm luv luv. Kev hloov pauv cov pa oxygen ntawm cov pa ntshiab oxygen aeration yog 5-10 npaug ntawm huab cua aeration, ua rau nws tshwj xeeb tshaj yog tsim nyog rau kev kho mob thaum muaj xwm txheej ceev ntawm cov khoom hnyav hnyav lossis cov khoom siv aeration tsis ua haujlwm.
Kev ceev faj: Kev tswj hwm nruj ntawm kev txhaj tshuaj oxygen yog qhov tsim nyog rau cov pa ntshiab pa aeration kom tsis txhob muaj DO ntau dhau ua rau muaj kab mob lom. Tsis tas li ntawd, cov pa ntshiab huv kuj tseem kim heev thiab yuav tsum tsuas yog siv los ua ib qho luv luv - ntsuas kub ceev, tsis yog rau ntev - siv tas mus li. Thaum lub sij hawm ncov tshaj tawm ntawm fermentation tank tu dej khib nyiab, brewery wastewater kho nroj tsuag siv cov pa ntshiab oxygen aeration kom muaj qhov ruaj khov yaj oxygen (DO) concentration ntawm kwv yees li 3 mg / L, kom ntseeg tau tias muaj txiaj ntsig zoo ntawm cov organic teeb meem.
(II) Microbial Enhanced Remediation Technology
Targeted Dosing ntawm Functional Microbial Agents:
Kev xaiv tus neeg sawv cev thiab daim ntawv thov: Cov neeg ua haujlwm tshwj xeeb microbial raug xaiv los txhim kho raws li ntau hom DO anomalies. Piv txwv li, thaum DO noj qeeb vim kev ua haujlwm tsis txaus, ntxiv cov tshuaj degrading microbial zoo heev (xws li Bacillus thiab Pseudomonas) tuaj yeem txhim kho microbial metabolic muaj peev xwm thiab nce oxygen noj. Thaum DO concentration siab dhau lawm, cov tshuaj denitrifying microbial ntxiv los siv cov tshuaj denitrification kom haus cov pa ntau dhau.
Customized Microbial Agent Development: Qee cov chaw kho dej khib nyiab sib koom tes nrog cov chaw tshawb fawb los tsim cov khoom siv microbial raws li cov dej muaj txiaj ntsig zoo thiab cov qauv hauv zej zog microbial. Ib lub chaw kho mob cov dej khib nyiab, los ntawm kev tshuaj xyuas ntawm nws cov sludge microbial zej zog, nrhiav pom qhov tsis muaj cov kab mob uas degrade cov tshuaj tua kab mob tshwj xeeb. Tom qab lub hom phiaj ntawm daim ntawv thov ntawm ib tug compound microbial tus neeg sawv cev, DO concentration poob ntawm 5 mg / L mus rau 2.8 mg / L, thaum cov tshuaj tua kab mob tshem tawm tau nce 40%. Rapid Biofilm Siv Technology
Kev xaiv cov cab kuj thiab txoj kev tsim Biofilm: Cov khoom siv roj ntsha raug tshem tawm (xws li polyurethane sponge lossis ceramsite) raug ntxiv rau hauv lub tank kho lom. Kev tsim cov tshuab biofilm sai yog siv los tsim cov biofilm ntawm cov cab kuj. Lub zej zog microbial nyob rau hauv biofilm muaj cov qauv ruaj khov, muaj zog poob siab tsis kam, thiab tuaj yeem tswj kev ua haujlwm txawm tias nyob rau hauv cov xwm txheej loj ntawm DO concentration fluctuations. Siv aeration thiab sib tov ua ke nrog inoculation ntawm cov kab mob tseem ceeb, kev tsim biofilm tuaj yeem ua tiav hauv 7-10 hnub, ua kom muaj peev xwm kho cov kab mob lom los ntawm 20% -30%.
Cov txiaj ntsig ntawm daim ntawv thov: Ib lub chaw kho dej khib nyiab hauv nroog tau ntsib kev ua haujlwm ntawm cov sludge tsawg thiab cov ammonia nitrogen ntau dhau ntawm nws cov dej ntws tawm vim qhov ntev -DO concentration fluctuations. Los ntawm kev ntxiv cov tshuaj lom neeg lom neeg thiab inoculating nrog cov kab mob nitrifying, DO concentration stabilized ntawm 2-3 mg / L tom qab tsim biofilm, thiab ammonia nitrogen tshem tawm tus nqi nce ntawm 60% mus rau 95%, txhim kho qhov ua tau zoo ntawm kev ua raws cai.
System Restructuring thiab Optimization: Tshem tawm cov hauv paus hauv paus ntawm DO Abnormalities
(I) Txheej Txheem Txoj Kev Txhim Kho thiab Hloov Kho
Multi-theem AO Process Optimization
Segmented Influent thiab Precise Aeration: Txhim kho cov txheej txheem AO ib txwm ua rau ntau -theem AO txheej txheem, los ntawm segmented influent thiab ywj siab aeration tswj, ua tiav cov kev cai ntawm DO concentration nyob rau hauv ntau cheeb tsam. Piv txwv li, hauv thawj - theem anoxic cheeb tsam, DO concentration yog tswj rau<0.5 mg/L to enhance denitrification; in the aerobic zone, the aeration rate is adjusted according to the influent load to stabilize the DO concentration at 2-4 mg/L. After adopting the multi-stage AO process, a wastewater treatment plant reduced the DO concentration fluctuation range from ±1 mg/L to ±0.3 mg/L, and the denitrification efficiency increased by 30%.
Ntxiv ntawm Intermediate Sedimentation Tank: Ntxiv qhov nruab nrab sedimentation tank rau ntau -theem AO txheej txheem ua tiav kev tswj xyuas cov sludge rov qab thiab cov dej cawv sib xyaw. Lub nruab nrab sedimentation tank tuaj yeem tshem tawm qee cov sludge, txo cov sludge concentration hauv thaj chaw aerobic tom ntej thiab txo qis kev siv oxygen; Nyob rau tib lub sijhawm, cov cawv sib xyaw rov qab tuaj yeem nqa nitrate ntau dua rau hauv thaj chaw anoxic, txhim kho denitrification efficiency. Lub chaw kho dej khib nyiab hauv thaj chaw muaj chaw ua haujlwm txo qhov DO concentration hauv thaj chaw aerobic los ntawm 0.5 mg / L thiab txo qis aeration zog siv los ntawm 15% los ntawm kev ntxiv lub tank nruab nrab sedimentation.
MBR txheej txheem sib sib zog nqus Optimization: Membrane Module Layout thiab Aeration Method Adjustment: Nyob rau hauv ib tug membrane bioreactor (MBR), optimizing lub membrane module layout thiab aeration txoj kev yuav zoo tswj DO concentration faib. Kev sib xyaw ua ke ntawm hauv qab aeration thiab sab aeration yog siv los ua kom tau raws li qhov xav tau ntawm cov pa oxygen ntawm cov kab mob thaum tsim cov shear quab yuam los tiv thaiv cov membrane fouling. Nyob rau tib lub sijhawm, kev saib xyuas online ntawm DO concentration nyob rau hauv lub membrane tank tso cai rau tiag tiag - lub sij hawm hloov ntawm aeration tus nqi, tiv thaiv ntau aeration uas yuav ua rau siab DO concentrations. Tom qab kev ua kom zoo, DO concentration nyob rau hauv MBR system ntawm cov khoom noj khoom haus cov nroj tsuag kho cov dej khib nyiab stabilized ntawm 1.5-2.5 mg / L, thiab lub voj voog tu daim nyias nyias tau ncua ntawm 30 hnub mus rau 60 hnub.
MBR Coupled nrog Advanced Oxidation txheej txheem: Thaum DO concentration nyob rau hauv lub MBR system yog txawv txav vim recalcitrant organic teeb meem nyob rau hauv lub influent, advanced oxidation txheej txheem (xws li ozone oxidation thiab Fenton oxidation) yog ua ke rau pretreat lub influent. Advanced oxidation tuaj yeem decompose recalcitrant organic teeb meem rau hauv cov khoom siv biodegradable, txo cov kev kho mob biochemical thiab stabilizing DO concentration. Tom qab siv MBR- txheej txheem ua ke ntawm ozone, dyeing thiab luam ntawv kho dej khib nyiab cog pom nws cov concentration nce ntawm 1.2 mg / L mus rau 2.2 mg / L, thiab nws cov COD tshem tawm tus nqi nce ntawm 75% mus rau 90%.
(II) Kev Siv Hluav Taws Xob thiab Kev Siv Hluav Taws Xob
Sludge Anaerobic Digestion rau lub zog tsim thiab aeration
Txheej Txheem Txheej Txheem: Cov sludge ntau dhau yog pub rau hauv lub plab zom mov anaerobic. Cov biogas generated yog siv los tsim hluav taws xob los ntawm cov roj hlwb, muab lub zog rau cov khoom siv aeration. Nyob rau tib lub sijhawm, lub digestate tom qab anaerobic digestion yog nplua nuj nyob rau hauv cov as-ham xws li nitrogen thiab phosphorus, uas yuav tsum tau rov qab mus rau lub biochemical tank kom ntxiv microbial as-ham, txhawb microbial metabolism, thiab stabilize DO concentration. Lub chaw kho dej khib nyiab, los ntawm sludge anaerobic digestion rau lub zog tsim hluav taws xob, tau ntsib 30% ntawm lub tshuab aeration qhov kev thov hluav taws xob, txuag kwv yees li 800,000 yuan hauv cov nqi hluav taws xob txhua xyoo, thaum tib lub sijhawm txhim kho DO concentration stability ntawm 25%.
Digestate Return Control: nruj me ntsis tswj lub digestate rov qab tus nqi kom tsis txhob muaj kev loj hlob ntawm microbial ntau dhau vim muaj cov as-ham ntau dhau, uas yuav ua rau kom oxygen noj. Los ntawm kev saib xyuas cov nitrogen thiab phosphorus concentrations nyob rau hauv cov tshuaj lom neeg lub tank, qhov kev faib ua feem ntawm biogas slurry recirculation yog kho, feem ntau tswj ntawm 5% -10% ntawm cov influent flow rate.
Pov tseg Thaum tshav kub kub rov qab thiab dej kub tswj
Cov khoom siv hluav taws xob pov tseg khaws cov khoom pov tseg thaum lub sij hawm kho cov dej khib nyiab (xws li cov cua kub dissipation los ntawm cov khoom siv aeration thiab cov khoom siv hluav taws xob los ntawm kev zom zaub mov anaerobic), hloov mus rau hauv dej kub los ntawm cov twj tso kua mis los tswj cov dej kub hauv cov khoom siv roj ntsha. Cov dej kub yog qhov tseem ceeb cuam tshuam rau oxygen solubility thiab microbial kev ua ub no. Kev tuav cov dej kub ntawm 20-30℃pab kom ruaj khov oxygen solubility thiab optimizes microbial kev ua ub no. Lub chaw kho dej khib nyiab nyob rau sab qaum teb Tuam Tshoj, dhau los ntawm nws cov khoom siv hluav taws xob pov tseg, ua kom cov dej kub hauv nws lub tank kho roj los ntawm 12℃mus rau 22℃hauv lub caij ntuj no, nce cov pa oxygen (DO) concentration ntawm 0.8 mg / L, thiab txhim kho kev kho mob los ntawm 20%.
Dej Kub thiab DO Co- tswj: Co- qauv tswj yog tsim los ntawm dej kub thiab DO concentration. Thaum cov dej kub nce, tus nqi aeration yog tsim nyog kom them rau qhov txo qis hauv oxygen solubility; Thaum cov dej kub poob, tus nqi aeration yog txo kom tsis txhob muaj ntau tshaj DO concentrations. Qhov no dynamic tswj xyuas kom meej tias DO concentration tseem nyob ruaj khov nyob rau hauv ib tug haum ntau yam.
Hla-Industry Technology Integration: Kev daws teeb meem tshiab los ua qhov tsis zoo
(I) Kev Siv IoT thiab Cov Ntaub Ntawv Loj Loj
DO Concentration Intelligent Prediction thiab Early Warning System
Multi-Kev Tshawb Fawb Cov Ntaub Ntawv Fusion: Kev sib koom ua ke ntau- cov ntaub ntawv xws li dej zoo, dej kom muaj nuj nqis, cov cuab yeej siv hluav taws xob ua haujlwm tsis zoo, thiab cov ntaub ntawv huab cua, DO concentration kwv yees qauv yog tsim los ntawm cov ntaub ntawv loj. Cov qauv no tuaj yeem kwv yees DO concentration tiam sis 24 teev ua ntej. Thaum qhov kev kwv yees DO concentration yuav dhau qhov ib txwm muaj, nws cia li ua rau muaj kev ceeb toom ntxov thiab thawb cov lus pom zoo. Qhov kev ceeb toom thaum ntxov ntawm lub chaw kho dej khib nyiab tau ua tiav qhov tseeb ntawm 95%, txo lub sijhawm teb rau kev tuav DO concentration anomalies los ntawm 2 teev mus rau 30 feeb.
Kev Tswj Chaw Taws Teeb thiab Kev Ua Haujlwm Tsis Muaj Neeg Ua Haujlwm: Raws li IoT thev naus laus zis, kev tswj cov chaw taws teeb ntawm cov khoom siv aeration thiab kev tswj tsis muaj neeg tuaj yeem ntawm cov khoom siv roj ntsha tau ua tiav. Cov neeg ua haujlwm tuaj yeem saib xyuas DO concentration thiab cov cuab yeej ua haujlwm hauv lub sijhawm ntawm lub sijhawm mobile APP lossis lub khoos phis tawj, thiab hloov kho qhov tsis zoo xws li aeration rate thiab sludge return ratio. Tom qab siv lub tshuab ua haujlwm tsis muaj neeg siv, lub chaw kho dej khib nyiab hauv thaj chaw roob pom nws qhov DO concentration stability nce mus rau 98%, thiab cov nqi zog txo los ntawm 60%. Digital Twin System Simulation thiab Optimization
Virtual Biochemical Tank Kev Tsim Kho: Tus qauv virtual ntawm lub tank biochemical yog tsim los siv cov cuab yeej digital ntxaib los simulate DO concentration faib thiab cov txheej txheem microbial metabolic nyob rau hauv cov xwm txheej sib txawv thiab kev ua haujlwm tsis zoo. Los ntawm kev sim virtual, tsis muaj xws li cov tswv yim aeration thiab sludge rov qab piv tau zoo, thiab cov kev daws teeb meem zoo tshaj plaws yog siv rau kev tsim khoom tiag tiag. Kev kho cov dej khib nyiab, los ntawm cov kev sib tw digital simulation, pom tias kho lub taub hau aeration ntawm 1.2 meters mus rau 1 meter txhim kho DO concentration uniformity los ntawm 20%, thiab cov nyhuv tiag tiag tom qab hloov kho tau zoo ib yam nrog cov txiaj ntsig simulation.
Fault Simulation thiab Emergency Drills: Qhov txawv txav ntawm DO concentration scenarios (xws li cov khoom siv aeration tsis ua hauj lwm thiab muaj zog load shocks) yog simulated nyob rau hauv lub digital ntxaib system, thiab virtual thaum muaj xwm ceev xyaum yog ua los txhim kho cov neeg teb xov tooj muaj peev xwm. Los ntawm kev xyaum rov ua dua, cov neeg ua haujlwm tau paub ntau ntxiv txog cov txheej txheem tuav rau DO anomalies, thiab lub sij hawm teb thaum muaj xwm txheej ceev tau luv luv los ntawm 40%.
(II) Cov Khoom Siv Tshiab thiab Kev Txhim Kho Cov Khoom Siv Advanced
Intelligent Aeration Membrane Cov ntaub ntawv
Cov yam ntxwv ntawm cov khoom siv thiab qhov zoo: Cov khoom siv ntse aeration membrane tshiab nta cov porosity siab, siab oxygen hloov efficiency, thiab muaj zog tiv thaiv - fouling muaj peev xwm. Cov txheej txheem ntse ntawm daim nyias nyias tuaj yeem kho qhov pore loj raws li DO concentration. Thaum lub DO concentration siab dhau lawm, lub pores yuav txo qis, txo cov pa xa mus; Thaum cov DO concentration tsawg dhau lawm, cov pores nthuav dav, nce oxygen hloov mus. Cov pa oxygen hloov ua haujlwm ntawm cov ntse aeration membrane yog ntau tshaj 50% siab dua li cov tsoos aeration hau, thaum txo lub zog noj los ntawm 30%.
Daim Ntawv Thov Kev Pom Zoo: Cov khoom siv ntse aeration membrane yog tam sim no nyob rau hauv kev tsav tsheb- teev theem thiab xav tias yuav ua tiav daim ntawv thov loj hauv 3-5 xyoo tom ntej. Pilot-scale tau los ntawm ib lub chaw tshawb fawb qhia tau hais tias DO concentration fluctuation ntau yam nyob rau hauv lub biological kev kho tank siv lub ntse aeration membrane tsuas yog ± 0.2 mg / L, thiab cov nyhuv kho tau zoo dua li cov tsoos aeration systems.
Underwater DO Concentration Real-Lub Sijhawm Saib Xyuas Neeg Hlau
Nta: Cov neeg hlau hauv qab dej tau nruab nrog lub siab - DO sensor, ntsuas dej zoo, thiab lub koob yees duab. Nws tuaj yeem taug kev nyob rau hauv lub tank kho lom neeg, saib xyuas DO concentration thiab dej tsis zoo hauv thaj chaw sib txawv hauv lub sijhawm. Tus neeg hlau xa cov ntaub ntawv mus rau hauv chav tswj hwm hauv nruab nrab ntawm kev sib txuas lus wireless, tso cai rau cov neeg ua haujlwm kom nkag siab txog qhov kev faib tawm DO concentration thiab tam sim ntawd txheeb xyuas cov cheeb tsam uas txawv txav DO.
Daim Ntawv Thov Kev Tsim Kho Tshiab: Tom qab qhia cov neeg ua haujlwm hauv qab dej DO saib xyuas neeg hlau, lub chaw kho dej khib nyiab loj nrhiav pom thaj chaw tuag uas tsis tshua muaj DO concentration nyob rau hauv kaum ntawm lub tank kho lom. Los ntawm kev kho lub taub hau aeration, qhov tsis sib xws DO concentration faib tau raug tshem tawm, txhim kho kev kho mob tag nrho los ntawm 10%.
Xaus: Kev daws qhov txawv txav DO ntau ntau yuav tsum tau ua txhaum los ntawm kev xav ib txwm muaj thiab sib txuas cov thev naus laus zis tshiab thaum muaj xwm txheej ceev, kev tsim kho lub cev thiab kev ua kom zoo dua qub, thiab hla - kev qhuab qhia thev naus laus zis kev sib koom ua ke los tsim kev sib txawv thiab ntau yam - theem kev daws teeb meem. Los ntawm luv- lub sijhawm ntsuas kub ntxhov xws li nanobubble aeration thiab cov kab mob ua haujlwm ntxiv, mus rau ntev - lub sijhawm ua kom zoo dua los ntawm cov txheej txheem hloov kho thiab lub zog rov qab los, thiab txuas ntxiv mus rau kev txiav- thev naus laus zis xws li IoT daim ntawv thov thiab cov khoom siv tshiab, txhua lub thev naus laus zis muab cov tswv yim tshiab los daws qhov txawv txav DO concentrations. Nyob rau hauv lub neej yav tom ntej, nrog kev nce qib ntawm cov thev naus laus zis thiab kev tsim kho tshiab, DO kev tswj hwm kev tswj hwm yuav ua tau zoo dua thiab muaj txiaj ntsig, muab kev lees paub ruaj khov rau kev ua haujlwm ruaj khov ntawm cov dej khib nyiab thiab kev ua tiav ntawm cov qauv dej zoo.