Txawm hais tias Tuam Tshoj muaj lub ntiaj teb loj tshaj plaws kev kho dej khib nyiab muaj peev xwm thiab kev ua lag luam, nrog kev kho txhua hnub muaj peev xwm ze li ntawm 200 lab m3 / d.
Txawm li cas los xij, piv nrog cov teb chaws muaj kev lag luam uas tau siv dav hauv kev tswj dej khib nyiab ib puas xyoo dhau los, Tuam Tshoj yuav luag tsis muaj kev tswj dej khib nyiab 40 xyoo dhau los.
Yog li ntawd, kev tsim cov thev naus laus zis tshiab yog qhov tseem ceeb rau kev txhim kho cov dej phwj tuaj kho thiab kev ua haujlwm ntawm cov dej phwj tuaj kho cov nroj tsuag, thiab tseem yuav pab ua kom tiav cov hom phiaj "dual carbon".
Biological denitrification yog txheej txheem uas tso siab rau cov kab mob kom hloov nitrate (NO3-) thiab nitrite (NO2-) rau hauv cov pa nitrogen. Nws tseem yog ib kauj ruam tseem ceeb hauv kev kho dej phwj tuaj thiab tseem ceeb heev rau kev txhim kho dej kom zoo.
Hauv cov chaw kho dej phwj, heterotrophic denitrification yog txoj kev siv ntau tshaj plaws. Txawm li cas los xij, qee zaum cov pa roj carbon monoxide hauv cov dej phwj tuaj tsis txaus los txhawb kev ua kom tiav denitrification, thiab cov organic carbon ntxiv yuav tsum tau ntxiv kom tshem tawm cov as-ham.
Qhov no yuav tsis tsuas yog nce nqi kev khiav hauj lwm ntawm cov dej phwj tuaj kho cov nroj tsuag los ntawm 3.5-8.5%, tab sis kuj tseem ua rau kom cov pa roj carbon dioxide emissions ntawm 50-125 kg ib xyoo ib xyoo.
Nyob rau hauv sib piv, raws li ib tug eco-friendly biological txoj kev, autotrophic denitrification tau txais kev saib xyuas nyob rau hauv xyoo tas los no. Txoj kev no feem ntau yog siv cov tshuaj tsis muaj zog xws li hydrogen, sulfur-txo cov tebchaw, thiab cov zaub mov hlau ua cov khoom siv hluav taws xob.
Txawm li cas los xij, cov neeg siv hluav taws xob tsis muaj hluav taws xob no kuj muaj qhov tsis zoo thiab cov kev txwv, xws li qis ib nrab-saturation tsis tu ncua ntawm hydrogen, thiab kev pheej hmoo ntawm cov pa phem ntawm cov metabolites nruab nrab los ntawm cov sulfur-txo cov tebchaw.
Txawm hais tias kev tshawb fawb tau pom tias cov nyhuv ntawm autotrophic denitrification tuaj yeem txhim kho los ntawm cov txheej txheem bioelectrochemical, uas yog, los ntawm cov txheej txheem bioelectrochemical denitrification.
Txawm li cas los xij, vim yog qhov nyuaj reactor configuration thiab lub siab siv zog synthesis cov kauj ruam ntawm bioelectrode cov ntaub ntawv, qhov loj-scale nce qib thiab daim ntawv thov ntawm cov saum toj no txoj kev yog txwv.
Yog li ntawd, yuav ua li cas los txhim kho cov txheej txheem denitrification ntawm cov dej phwj tuaj kho cov nroj tsuag thiab txhim kho kev ua haujlwm ntawm cov dej phwj tuaj kho cov nroj tsuag yeej ib txwm yog ib qho teeb meem ntawm thaj chaw.
Nws tau tshaj tawm tias Zhou Shungui pab pawg tau koom nrog kev tshawb fawb txog microbial electrochemistry thiab microbial extracellular electron hloov mus rau lub sijhawm ntev. Pab neeg tshawb fawb tau pom nyob rau hauv ntau xyoo ntawm kev tshawb fawb tias electrons ua lub luag haujlwm tseem ceeb hauv kev tau txais lub zog thiab cov metabolism hauv cov kab mob.
Qhov ntawd yog hais tias, cov kab mob yuav tsum tau txais lub zog thiab tswj lub neej ua haujlwm los ntawm cov tshuaj tiv thaiv redox, uas yog, los ntawm kev hloov pauv hluav taws xob.
Yog li ntawd, txawm hais tias lub zog txhua yam yog ntau hom ntawm lub zog hauv cov xwm txheej, nws yuav cuam tshuam rau cov metabolism hauv microbial, yog li nws tseem yuav xav tau electrons ua tus choj.
Txhawm rau ua pov thawj cov txiaj ntsig ntawm lub zog siv hluav taws xob ntawm microbial metabolism, nws yuav tsum xub tshawb xyuas seb lub zog hluav taws xob puas tuaj yeem cuam tshuam rau tiam ntawm electrons. Yog li ntawd, Zhou Shungui thiab nws pab neeg tau pib ua tib zoo saib xyuas cov nyhuv piezoelectric mechanically.
Cov ntaub ntawv uas lawv tau sab laj ua rau lawv txhawb nqa ntau dua. Nws hloov tawm hais tias thaum ntxov li 1880, Fabkis cov kws tshawb fawb "Curie cov kwv tij" Pierre Curie thiab Jacques Curie thawj zaug nrhiav pom "piezoelectric effect" nyob rau hauv quartz muaju, uas yog, quartz yuav tsim hluav taws xob thaum raug kev nyuaj siab.
Xyoo 1917, tus kws tshawb fawb Fab Kis Fab Kis Paul Langevin kuj tau siv cov nyhuv piezoelectric ntawm quartz siv lead ua los tsim lub ntiaj teb thawj zaug sonar (Langevin sonar), thiab ua tiav cov nkoj raws li "echolocation".
Qhov no txhais tau hais tias cov nqi no tuaj yeem ua tau raws li kev txo qis ntawm cov kab mob hauv cov kab mob kom tsav cov kab mob microbial. Txawm li cas los xij, txij li kev tshawb pom ntawm cov nyhuv piezoelectric, tsis muaj leej twg tau lees paub qhov muaj peev xwm no.
"Qhov no ua rau peb zoo siab tab sis kuj muaj kev ntxhov siab me ntsis, tom qab tag nrho, cov txiaj ntsig kev tshawb fawb uas twb muaj lawm qhia tau tias lub zog siv hluav taws xob tuaj yeem ua rau lub cev tawg thiab tawg ntawm cov hlwb. Yog li ntawd, peb xav tau cov ntaub ntawv pov thawj kom paub meej tias txoj kev tshiab no." Zhou Shungui hais tias.
Tom qab ntau cov ntaub ntawv tshuaj xyuas, lawv pom tias struvite yog cov khoom siv piezoelectric zoo heev thiab muaj ntau heev hauv kev kho dej khib nyiab.
Yog li, struvite puas tuaj yeem ua ke nrog cov kab mob xws li cov kab mob denitrifying los txhim kho kev ua haujlwm denitrification ntawm cov dej khib nyiab?
Tom qab tag nrho, kev siv hluav taws xob suav nyiaj rau {{0}}}% ntawm cov nqi khiav lag luam ntawm cov chaw kho dej phwj, uas yog sib npaug rau 0.3-2.1 kWh ib cubic meter ntawm dej phwj kho.
Cov kev siv zog no feem ntau yog los ntawm aeration lossis nplawm ntawm cov khoom siv lub cev muaj zog, yog li lawv feem ntau tsis siv tag nrho.
Nrog rau kev sim-nws tus cwj pwm, lawv tsim kev sim piezoelectric catalytic biological denitrification sim. Siv dav dav ammonium, phosphate thiab magnesium ions nyob rau hauv cov dej khib nyiab, ib txheej ntawm struvite "armor" tau tsim nyob rau hauv qhov chaw ntawm denitrifying microorganisms.
Cov kev sim tom ntej no tau ua pov thawj tias nyob rau hauv qhov tsaus ntuj thiab tsis tshua muaj cov txheej txheem sib xyaw ua ke, cov txheej txheem ntawm "cov cuab yeej" no tuaj yeem muab cov khoom siv hluav taws xob txuas ntxiv rau cov kab mob, yog li tsav cov txheej txheem denitrification.
Nyob rau tib lub sijhawm, piv nrog cov txheej txheem biological denitrification, txoj kev no yog qhov sib txawv heev.
Tsis zoo li cov txheej txheem xws li photocatalysis, nws tsis tas yuav tsum tau siv tshuaj tua kab mob, tab sis siv dej ua "piezoelectric qhov reagent".
Tsis tas li ntawd, struvite precipitate ua tau tuaj yeem siv los ua phosphate chiv thiab nitrogen chiv kom ua tiav lub hom phiaj ntawm kev txo qis emissions thiab nce efficiency.
Qhov tseeb, thaum pib ntawm kev tshawb fawb, pab neeg tshawb fawb tau siv oscillation los ua lub hauv paus ntawm mechanical quab yuam thiab rov ua kom zoo dua qhov kev sim thiab qhov tsis zoo, tab sis cov txiaj ntsig tseem tsis txaus siab, thiab cov neeg koom nrog ib zaug poob kev ntseeg siab.
Tam sim ntawd muaj ib hnub, lawv pom tias cov hlau nplaum sib nqus ntawm lub rooj kuaj sim yaj lub raj mis tshuaj nyob rau hauv ib qho instant thiab tsim ib tug crystal ntshiab daim duab peb sab vortex.
Qhov kev tshawb pom no tau muab lub tswv yim rau lawv: Puas tuaj yeem siv cov hlau nplaum sib nqus los tsim kom muaj zog ntawm lub zog?
Nws tau pom tias lawv qhov kev kwv yees yog qhov tseeb. Lub oscillating mechanical quab yuam tsis muaj zog heev, uas yog vim li cas qhov kev sim yav dhau los tsis ua haujlwm zoo. Tom qab siv cov sib nqus stirrer, kev tshawb fawb tau pib ua kom du.
Cov ntaub ntawv cuam tshuam tau luam tawm hauv Nature Dej nrog lub npe "Cov dej khib nyiab denitrification uas tau tsav los ntawm cov tshuab hluav taws xob los ntawm cov xov tooj ntawm tes piezo-sensitization".
Jie Ye thiab Ren Guoping yog thawj tus kws sau ntawv, thiab Zhou Shungui yog tus sau sib xws.