Aerobic Denitrification Technology

Lub tshuab ntawm Denitrication yog raws li hauv qab no: qhov pib kev xav tau muaj peev xwm ntawm kev hloov pauv pa hluav taws xob ntawm kev hloov pauv mus rau nitrite lossis nitrite, yog li inhibiting denitricification. Txawm li cas los xij, cov kev tshawb fawb tsis ntev los no tau qhia hais tias cov kab mob tsis lees paub txog cov enzyme thiab aerobic ua pa systemion. Thaum nitrate nitrogen yog txo, yaj oxygen tseem raug txo; Cov pa oxygen tsis yog ib qho ncaj qha inhibiting denitrifying kev ua si lossis ntau lawm. Ib tug tsis muaj nitrate nitrogen lossis yaj oxygen txo cov kab mob kab mob thiab tus nqi txwv.

Xyoo 1980s, Robertson li al. Tshaj tawm lub hav zoov ntawm Aerobic Denitrify thiab Aerobic Denitrifyic Systems, thiab paub tseeb tias muaj kev lees paub ntawm * paracoccus denitrifications *). Thaum lub sijhawm kev loj hlob, txoj kev loj hlob loj hlob siab dua thaum O2 thiab Noexist dua li thaum twg yog nyob ib leeg. Ib lub cev loj hlob ntawm kev tshawb fawb tau pom tias muaj ib lub neej ntawm Aerobic Denitrical hauv cov kab mob thiab qhia txog cov kab mob uas muaj peev xwm ua rau tus mob Aerobic.

① Ua kom sov ntawm Aerobic Denitrify

Nyob rau hauv hypothetical ua pa ntawm aerobic denitrify, nus nitrees nitrogen thiab oxygen tuaj yeem ua raws li cov neeg tau txais kev lees paub hluav taws xob. Cov hluav taws xob tuaj yeem hloov kho los ntawm cov organic txo qis rau cov pa oxygen, thiab tseem yog nitrite nitrogen, thiab nitrite nitrogen, thiab nitrite oxide, txo lawv raws li.

Beny Denitrification Txheej txheem thiab catalytic enzymes

Cov kab mob denitricalferrification ntawm Aerobic Denitrify cuam tshuam nrog plaub txoj kev txo qis, nitrite reductase, nitrite oxide reductase, thiab nitrous oxide reductase, feem.

Nitrate reductase: txo nitrate rau nitrite;

Nitrite Reducthase: Aerobic Denitrify cov kab mob feem ntau muaj ob hom nitrite beductase: ib qho yog cytochrome (CD) Nws txo cov nitrite rau nitric oxide (tsis muaj);

NITUM Oxide Reductase: Txo cov tshuaj pleev xim rau nitric rau nitrous oxide;

NITUM Oxide Reductase: Lub Nitrous Oxide Reductase Bactered Bacterified Kab Mob yog lub tooj liab {0} muaj protein nyob hauv ib lub pob zeb. Nyob rau hauv cov pa -} muaj cov xwm txheej, cov pa roj liab oxide, muaj peev xwm txo ob qho tib si tsis muaj thiab NO2 gases rau n2.

Cov hom thiab cov chaw ntawm Aerobic Denitrifying Bacteria

Aerobic denitrify cov kab mob feem ntau yog nyob rau hauv genera xws li * pseudomonas *, * Alcaligenes *, * Paracoccus *, thiab * Bacillus *. Lawv yog hom Heterotrophic Denitriftion uas yog aerobic lossis tus kws qhia ntawv aerobic thiab siv cov pa roj carbon ua haujlwm.

① Cov ntsiab cai qhia txog cov khoom sib txawv

Feem ntau, cov khoom tseem ceeb ntawm Aerobic Denitricification yog n₂o, thaum anaerobic denitrication feem ntau ua n₂ thiab me me ntawm n₂o thiab tsis muaj. Qhov no qhia txog qhov sib txawv ntawm cov haujlwm ntawm cov khoom siv rau cov enzyme thiab hluav taws xob thauj khoom nyob rau hauv aerobic thiab anaerobic tej yam, ua rau cov khoom lag luam sib txawv.

② cov hauv paus ntsiab lus ntawm tib lub suab Nitricification thiab Denitricification

Aerobic Denitrify Bacteria tuaj yeem nqa tawm cov tsis kam lees nyob hauv Aerobic tej yam, cia nws tshwm sim ib txhij nrog nitricification. Qhov no tsoo los ntawm cov ntawv tso cai ib txwm hais tias Nitrification yuav tsum muaj cov txheej txheem aerobic thiab denitrification yuav tsum muaj cov txheej txheem anaerobic. Qhov no yog vim yog vim Aerobic Denitrifying cov kab mob muaj cov kev siv enzyme tshwj xeeb, ua rau lawv ua kom zoo ua rau muaj kev cuam tshuam ntawm aerobic.

③ Kev hloov pauv hloov ncaj qha ntawm ammonium nitrogen txoj cai

Aerobic denitrifyarify tuaj yeem hloov ammonium nitrogen rau hauv gaseous cov khoom hauv aerobic. Qhov no qhia tau tias lawv muaj cov cim metabolism muaj peev xwm ua tiav ntawm cov kev hloov pauv ntawm ammonium nitrogification nitrification nitrification thiab ces denitrification.

④ Electron lees txais thiab cov kev siv pa roj oxyen

Hauv cov txheej txheem denitrification ntawm Aerobic Denitrify, ob nitrate nitrogen thiab oxygen tuaj yeem ua raws li cov neeg tau txais kev lees paub hluav taws xob. Thaum tshem tawm nitrate nitrogen, oxygen tseem noj. Qhov no qhia tau tias lawv cov kev ua pa hluav taws xob hluav taws xob tuaj yeem hloov hluav taws xob sib txawv raws li cov neeg tau txais sib txawv thiab cov pa taws kev tshem tawm thiab cov pa oxygen.

Lub hauv paus ntawm lub hauv paus ntawm Aerobic Denitricification yog qhov tseeb kuj meej, tab sis kom deb li deb, tsis muaj kev tshawb fawb txog kev sim, thiab muaj feem xyuam cov kev tshawb fawb, thiab muaj feem xyuam Yog tias koj tuaj hla cov khoom lag luam, koj tuaj yeem sim lawv tawm, tab sis tsuas yog them yog tias lawv ua tau zoo. Tsis txhob raug dag los ntawm qee cov tuam txhab ib puag ncig.

Yog tias Aerobic denitrificate technology tuaj yeem siv tau ua tiav hauv kev kho tshuab dej hauv kev tiv thaiv kev tiv thaiv kev tiv thaiv kev lag luam ib puag ncig, ua nitrification kua recirculation tsis tseem ceeb.