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QINGQUAN

Composite Carbon Sources for Wastewater Denitrification: Dosage, Kinetics thiab Tswj

2026-10-14 13:40:43 dr hab

Cov pa roj carbon monoxide sab nraud yog qhov tseem ceeb hauv cov dej khib nyiab denitrification thaum thaj chaw anoxic tsis muaj cov pa roj carbon monoxide txaus los txo cov nitrate thiab nitrite load ntawm tus nqi yuav tsum tau. Qhov koob tshuaj tsis tuaj yeem raug teeb tsa los ntawm tus nqi universal L / m³: nws nyob ntawm cov khoom siv nitrogen, muaj cov pa roj carbon monoxide, COD kev koom tes ntawm cov khoom lag luam, txheej txheem teeb tsa, kub, biomass mob thiab lub hom phiaj effluent.

QINGQUAN khoom siv a Composite Carbon Source rau denitrification dej khib nyiab. Nws nplooj ntawv cov khoom piav qhia txog ntau yam kev tsim tawm raws li cov enzymes lom neeg, cov hlua luv cawv / kua qaub, cov neeg txhawb nqa microbial thiab microbial as-ham, nrog lub teeb daj lossis xim tsis muaj kua muag. Cov lus tseeb no txheeb xyuas cov khoom lag luam, tab sis cov khoom lag luam tshwj xeeb COD concentration, ntau npaum li cas thiab cov lus teb cog yuav tsum raug lees paub los ntawm cov ntaub ntawv muaj feem cuam tshuam thiab kuaj qhov chaw.

Thaum twg Tus Txheej Txheem Denitrification Xav Tau Sab Nraud Carbon?

Denitrifying microorganisms xav tau ib tug siv tau electron pub los txo nitrate thiab nitrite rau nitrogen gas. Hauv ntau cov txheej txheem kev tshem tawm cov khoom siv roj ntsha, qee cov pa roj carbon monoxide los ntawm cov dej khib nyiab nws tus kheej. Tus nqi tseem muaj nyob rau hauv thaj chaw anoxic, txawm li cas los xij, nyob ntawm thaj chaw nyob qhov twg thiab ntau npaum li cas biodegradable organic teeb meem twb tau haus dej ntws.

Ib cheeb tsam ua ntej anoxic tuaj yeem tau txais cov dej khib nyiab nrog cov ntsiab lus ntawm cov khoom siv biodegradable COD, thaum thaj tsam tom qab anoxic lossis denitrifying lim feem ntau tau txais dej tom qab ntau ntawm cov khoom qub qub tau raug tshem tawm lawm. Hauv qhov xwm txheej ntawd, cov pa roj carbon ntxiv yog qhov yuav dhau los ua qhov txwv kev nkag.

Cov nroj tsuag yuav tsum kuaj xyuas cov pa roj carbon monoxide los ntawm cov txheej txheem tiag tiag es tsis yog los ntawm COD muaj zog ib leeg. Siab tag nrho COD ntawm cov nroj tsuag inlet tsis ua pov thawj tias downstream anoxic biomass muaj txaus siv tau sai heev substrate.

txheej txheem txheej txheem Cov lus nug txog carbon-muaj Yuav ua li cas kom paub tseeb
Pre-anoxic lom nitrogen tshem tawm Ntau npaum li cas yooj yim biodegradable influent carbon mus txog thaj tsam anoxic? COD / BOD feem ntau cuam tshuam, rov ua dua ntws, nitrate load, DO nqa mus
Post-anoxic cheeb tsam Puas tau kho cov dej ntws los twb tau siv cov pa roj carbon ntau tshaj biodegradable? Anoxic influent nitrate / nitrite, residual COD, ntws thiab sijhawm sib cuag
Denitrifying lim Puas yog lub substrate sab nraud xav tau los txhawb lub hom phiaj nitrate-tshem tawm tus nqi? Lim loading, nitrate load, effluent phiaj thiab tam sim no koob
Cov dej khib nyiab tuaj yeem sib txawv Puas muaj cov pa roj carbon hloov pauv nrog cov xwm txheej tsim khoom? Time-series COD, nitrogen thiab cov ntaub ntawv ntws

Dab tsi Koj Yuav Tsum Sib piv hauv Composite Carbon Source?

Ob yam khoom uas muaj tib lub ntim yuav tsis muab cov pa roj carbon zoo tib yam rau biomass. Ib qho kev sib piv muaj txiaj ntsig zoo suav nrog cov pa roj carbon monoxide uas muaj nyob rau hauv denitrification, sai npaum li cas cov kab mob tuaj yeem siv tau, thiab cov khoom xa tuaj li cas ntawm cov khoom mus rau batch.

Cov ntsiab lus sib piv tseem ceeb suav nrog:

  • cov khoom COD concentration thiab cov qauv siv los qhia nws;
  • biodegradability thiab denitrification kinetics;
  • biomass tawm los thiab muaj peev xwm sludge-tsim cuam tshuam;
  • viscosity, solids cov ntsiab lus thiab kev coj cwj pwm;
  • khaws cia ruaj khov thiab qis-kub tuav;
  • kev ruaj ntseg thiab cov ntaub ntawv compatibility;
  • batch-rau-batch muaj pes tsawg leeg.

Cov khoom lag luam carbon tuaj yeem suav nrog ib qho sib txuas xws li methanol, ethanol lossis acetate nrog rau cov khoom tsim muaj ntau yam. Qhov kev sib piv raug tsis yog "cov khoom xyaw twg zoo tshaj" hauv kev sib cais; nws yog cov khoom uas muab qhov yuav tsum tau denitrification kev ua tau zoo nrog kev tswj tuav, noj tshuaj thiab residual-COD txaus ntshai nyob rau hauv cov nroj tsuag tej yam kev mob.

QINGQUAN piav qhia txog nws Cov Khoom Siv Hluav Taws Xob Uas yog cov khoom siv ntau yam denitrification carbon. Nplooj ntawv luam tawm tsis muab cov khoom lag luam tshwj xeeb COD concentration lossis COD universal COD: N yuav tsum tau, yog li cov txiaj ntsig no yuav tsum tau thov thiab lees paub ua ntej kev suav koob tshuaj hloov pauv mus rau qhov ntim ntim khoom noj.

Yuav Ua Li Cas Thiaj Yuav Tsum Tau Txais Cov Tshuaj Txhuam Carbon?

Pib nrog Nitrogen Load

Cov koob tshuaj yuav tsum pib los ntawm tus nqi ntawm nitrate thiab nitrite uas yuav tsum tau muab tshem tawm, tsis yog los ntawm cov dej khib nyiab ib leeg. Rau lub sijhawm ua haujlwm, cov nroj tsuag xav tau cov dej ntws, nitrogen concentration nkag mus rau thaj chaw carbon-fed thiab lub hom phiaj nitrogen concentration tawm hauv nws. Cov ntaub ntawv ntawd txhais tau hais tias cov khoom tshem tawm nitrogen uas cov khoom siv sab nraud yuav tsum pab txhawb.

Kev suav kuj yuav tsum xav txog ntau npaum li cas nkag tau biodegradable sab hauv cov pa roj carbon yog twb muaj thiab seb puas muaj cov pa oxygen nkag mus rau hauv thaj chaw anoxic yog siv ib feem ntawm cov khoom siv hluav taws xob. Yog tias cov pa tseem ceeb tau nqa mus rau hauv cheeb tsam, cov pa roj carbon ntxiv tuaj yeem noj yam tsis muaj kev cuam tshuam ncaj qha rau kev txo nitrate.

Normalize Dose ntawm COD Basis

Ua ntej sib piv cov khoom lag luam, normalize lawv txoj kev koom tes rau COD hauv paus. Ib yam khoom muag raws li cov kua ntim tsis tuaj yeem muab piv nrog rau lwm yam khoom los ntawm L / m³ ib leeg tshwj tsis yog lawv cov COD concentrations paub. Ib yam li ntawd, kev sib piv ib kg/hnub tsis tiav yog tias ib yam khoom muaj cov pa roj carbon ntau dua rau ib kilogram.

Ib tug tswv yim xam lub moj khaum yog:

Yuav tsum tau sab nraud COD ≈ nitrogen load yuav tsum tau muab tshem tawm × xaiv COD: N tsim piv - siv tau sab hauv carbon pab

COD:N piv siv rau kev kwv yees thawj zaug yuav tsum yog los ntawm lub hauv paus tsim tsim, kev sim lub rooj ntev zaum lossis keeb kwm cog rau qhov tseeb carbon qhov chaw thiab txheej txheem. Nws tsis yog universal tas mus li. Carbon-source chemistry, biomass yield, acclimation, kub, sludge hnub nyoog thiab txheej txheem configuration tag nrho cov cuam tshuam rau qhov tiag consumptive ratio.

Thaum qhov xav tau COD cov tswv yim kwv yees, nws tuaj yeem hloov mus rau cov khoom lag luam lossis ntim tsuas yog tom qab lees paub cov khoom lag luam COD qhov tseeb thiab qhov ntom ntom lossis lwm cov ntaub ntawv siv tshuaj.

Tswv yim Vim li cas thiaj tseem ceeb
Flow thiab NO3- N / TSIS2-N load Txhais lub luag haujlwm tshem tawm nitrogen
Sab hauv nkag tau biodegradable COD Txo qhov kev xav tau sab nraud-carbon thaum nws muaj nyob hauv thaj chaw anoxic
DO nkag mus rau thaj tsam anoxic Muaj peev xwm haus electron pub yam tsis tau tshem tawm nitrate
Cov khoom COD concentration Hloov COD qhov kev thov rau hauv cov koob tshuaj lag luam
Kub thiab SRT Muaj feem xyuam rau kev lom neeg kinetics thiab adaptation

Yuav Ua Li Cas Kub thiab Biomass Hloov Cov Carbon Demand?

Denitrification yog lom, yog li cov tshuaj tib yam tshuaj tsis tau lees tias tib lub nitrate tshem tawm tus nqi thoob plaws hauv lub xyoo. Qhov kub thiab txias cuam tshuam rau microbial cov tshuaj tiv thaiv. Cov khoom tuav lub sij hawm, biofilm los yog ncua kev loj hlob configuration, thiab cov pej xeem twb acclimated rau ib tug substrate kuj yuav hloov sai npaum li cas cov pa roj carbon qhov chaw yog siv.

Kev hloov tam sim ntawd los ntawm ib qhov chaw carbon mus rau lwm qhov yuav ua rau cov lus teb ib ntus uas txawv ntawm qhov kev ua haujlwm tsis tu ncua. Thaum sib piv cov pa roj carbon monoxide, cov neeg ua haujlwm yuav tsum tau sau lub sijhawm ua kom zoo thiab zam kev kho thawj ob peb teev lossis hnub ua tus sawv cev tag nrho yog tias biomass tseem hloov kho.

Kev hloov pauv hauv hydraulic lossis nitrogen loading tuaj yeem tsim teeb meem kev txhais lus zoo sib xws. Yog hais tias nitrate load nce nyob rau tib lub sij hawm uas ib tug tshiab carbon qhov chaw yog qhia, ib tug unchanged effluent concentration tsis tau txhais hais tias cov khoom tshiab muaj tib kinetics. Cov pa roj carbon input thiab nitrogen-tshem tawm load yuav tsum tau soj ntsuam ua ke.

Cov neeg ua haujlwm tuaj yeem txheeb xyuas qhov tsis txaus thiab cov pa roj carbon ntau dhau?

Kev tswj xyuas zoo saib ntawm ob sab ntawm cov tshuaj tiv thaiv denitrification: cov nitrogen uas yuav tsum tau muab tshem tawm thiab cov pa roj carbon seem uas yuav tawm hauv cov txheej txheem. Ib koob tshuaj tsawg tuaj yeem tawm nitrate lossis nitrite saum lub hom phiaj. Ib koob tshuaj ntau dhau tuaj yeem tso cov COD seem thiab tsim cov pa oxygen los yog cov pa roj carbon tawg.

Pom qhov xwm txheej Qhov ua tau los tshawb xyuas Thawj qhov kev kuaj xyuas
TSIS MUAJ3-N tseem siab Kev siv tsis txaus cov pa roj carbon monoxide, siab DO nqa mus, lub sijhawm sib cuag tsis txaus, tsis kub lossis tsis txaus biomass Dose, COD hauv paus, DO, kub, ntws thiab anoxic nyob rau lub sijhawm
TSIS MUAJ3-N ua tau raws li lub hom phiaj tab sis cov dej COD nce ntxiv Carbon overfeed, hloov cov khoom concentration, txo nitrogen load lossis tswj tsis zoo pub Product concentration, twj calibration, nitrogen load thiab dosing logic
TSIS MUAJ2-N sau Tsis tiav denitrification, kinetic imbalance lossis hloov cov txheej txheem Carbon koob tshuaj, DO, pH, kub thiab biomass mob
Kev ua tau zoo hloov pauv tom qab hloov pauv Kev sib xyaw, COD concentration, viscosity lossis pub-system variation COA/TDS cov ntaub ntawv, dosing-pump tso zis thiab batch sib piv

Cov kev soj ntsuam no yog cov lus qhia kev kuaj mob, tsis yog ib-rau-ib tus lej txhaum cai. Cov txiaj ntsig nitrate siab yuav tsum tsis txhob raug kho nrog ntau cov pa roj carbon ntau ua ntej cov pa oxygen nkag mus, kev sib cuag lub sij hawm thiab biomass mob raug kuaj xyuas. Ib yam li ntawd, COD siab yuav tsum tsis txhob raug ntaus nqi rau carbon-source overfeed yam tsis tau lees paub lwm tus COD contributors.

Vim li cas cov khoom lag luam tsis sib xws tseem ceeb hauv kev xaiv cov khoom siv carbon?

Nyob rau hauv ib tug tsis tu ncua dosed denitrification system, ib tug coj mus muag carbon qhov chaw yog ib feem ntawm txheej txheem-tswj voj. Kev hloov pauv hauv cov khoom tuaj yeem tshwm sim raws li qhov sib txawv ntawm cov nroj tsuag kev ua tau zoo txawm tias thaum lub twj tso kua mis tsis hloov.

Cov txiaj ntsig tsis zoo nyob ntawm cov khoom, tab sis cov nroj tsuag yuav tsum nkag siab tias cov yam ntxwv twg tswj tau qhov tseeb COD xa tuaj thiab seb qhov viscosity, cov khoom raug tshem tawm lossis theem kev ruaj ntseg tuaj yeem cuam tshuam cov khoom siv. Yog hais tias ib yam khoom thickens ho nyob rau hauv txias cia los yog muaj variable suspended solids, lub nominal twj tso kua mis tej zaum yuav tsis sawv cev rau ib tug zoo tshuaj pub.

Khoom yam ntxwv Muaj peev xwm ua haujlwm cuam tshuam
COD concentration variability Hloov cov COD ua tau xa tuaj ntawm ib koob tshuaj tas li
viscosity Muaj peev xwm hloov lub twj tso kua mis calibration thiab hloov tus cwj pwm
Cov khoom raug tshem tawm Tej zaum yuav cuam tshuam rau cov lim dej, tubing lossis cov khoom siv pub
Phase stability Muaj peev xwm cuam tshuam cov koob tshuaj sib xws yog tias cov khoom sib cais thaum khaws cia
Kev coj tus cwj pwm qis Tej zaum yuav cuam tshuam rau kev khaws cia, hloov pauv thiab ntsuas ntsuas

Kev txwv cov khoom lag luam yuav tsum yog los ntawm TDS thiab COA cuam tshuam es tsis yog los ntawm cov kev xav ntawm cov pa roj carbon ntau. QINGQUAN cov nplooj ntawv cov khoom tau caw cov nroj tsuag los muab cov dej zoo thiab cov ntaub ntawv txheej txheem kom cov khoom tshwj xeeb cov ntaub ntawv thiab daim ntawv thov kev taw qhia tuaj yeem phim rau qhov project.

Yuav Ua Li Cas Ib tsob nroj Sib piv Composite Carbon Source nrog Sodium Acetate?

Ib tsob nroj uas twb tau siv sodium acetate yuav tsum sib piv cov pa roj carbon sib xyaw ntawm tib txoj kev thiab kev ua haujlwm. Cov lus nug ncaj ncees tsis yog seb ib qho khoom puas muaj qis dua L / m³ koob. Cov lus nug ncaj ncees yog xa COD siv ntau npaum li cas, qhov biomass teb li cas, qhov txiaj ntsig ntawm nitrogen tshem tawm tau ua tiav, COD seem seem, thiab qhov cuam tshuam dab tsi thiab cov nqi cuam tshuam.

QINGQUAN kuj muab ib Sodium Acetate Solution rau cov dej khib nyiab carbon supplementation. Yog li kev sib piv tswj tau tuaj yeem tsim nyob ib puag ncig:

  • tib cov dej khib nyiab lossis lub sijhawm ua haujlwm sib piv;
  • tib lub hom phiaj tshem tawm nitrogen;
  • normalized COD cov tswv yim;
  • TSIS MUAJ3-N thiab NO2-N teb;
  • effluent COD;
  • sludge los yog biofilm teb qhov teeb meem;
  • twj tso kua mis, cia thiab tuav yuav tsum tau;
  • tus nqi ib chav ntawm nitrogen tshem tawm ntau dua li cov khoom lag luam ib leeg.

Tsis muaj cov pa roj carbon monoxide yuav tsum tau tshaj tawm thoob ntiaj teb zoo dua yam tsis muaj lub hauv paus zoo li no. Cov nroj tsuag tuaj yeem tshuaj xyuas QINGQUAN qhov dav dua tshuaj kho dej ntau yam thaum qhov teeb meem kev khiav hauj lwm muaj ntau tshaj li carbon deficiency.

Cov ntaub ntawv dab tsi yuav tsum raug xa mus ua ntej kev sim Carbon-Source?

Kev sim cov pa roj carbon monoxide yog qhov muaj txiaj ntsig zoo dua thaum tus neeg muag khoom pom lub luag haujlwm tshem tawm cov nitrogen tiag tiag thiab kev ua haujlwm ntawm kev ua haujlwm ua ntej muab tshuaj. Ib tsob nroj yuav tsum npaj, qhov twg muaj:

  • nruab nrab thiab siab tshaj ntws;
  • TSIS MUAJ3-N thiab NO2-N nkag mus thiab tawm hauv thaj chaw uas muaj cov pa roj carbon;
  • COD / BOD thiab muaj cov ntaub ntawv muaj nyob rau ntawm biodegradable feem;
  • NH4-N thiab tag nrho-nitrogen lub hom phiaj;
  • txheej txheem configuration thiab dosing point;
  • kub, pH, DO thiab SRT lossis cov ntaub ntawv biomass;
  • cov pa roj carbon tam sim no, concentration thiab ntau npaum li cas;
  • teeb meem kev khiav hauj lwm tam sim no, suav nrog cov khoom seem nitrate, nitrite lossis COD;
  • xav tau cov ntaub ntawv cov khoom thiab ntim cov txwv.

QINGQUAN nug cov neeg siv ntawm nws Composite Carbon Source los muab cov ntaub ntawv qhia txog dej zoo, hom kab ke, tshuaj tam sim no, ntau npaum li cas, kev khiav hauj lwm qhov teeb meem thiab cov txiaj ntsig ntawm lub hom phiaj. Yog tias koj tab tom npaj lub rooj zaum lossis cog kev sib piv, koj tuaj yeem ua tau qhia koj cov dej khib nyiab nrog QINGQUAN thiab thov cov khoom tshwj xeeb TDS, MSDS, COA thiab cov ntaub ntawv hais.

Rau cov dej khib nyiab denitrification, ruaj khov carbon dosing tsis tiav los ntawm kev xaiv ib koob tshuaj universal. Nws los ntawm kev sib piv cov nitrogen load, siv tau COD, microbial kinetics thiab cov khoom sib xws rau cov txheej txheem tiag tiag, tom qab ntawd tswj cov khoom noj nrog nitrogen thiab cov khoom seem-carbon.