Lub "Invisible Hero" nyob rau hauv dej phwj kho mob - Biofiller

Koj puas tau xav li casKev kho dej phwj tuajtig turbid dej rau hauv dej huv? Ntxiv nrog rau qhov kev koom tes ntawm cov kab mob microorganisms, kuj tseem muaj cov khoom siv ntsiag to - cov khoom siv roj ntsha. Nws zoo li "ecological apartment" nyob rau hauv cov dej, muab ib qho chaw nyob rau cov kab mob thiab ua kom ob npaug ntawm cov dej phwj purification. Niaj hnub no, cia peb saib ntawm no "invisible hero"!

I. Dab tsi yog biofiller?

Txhais:Biofiller yog cov khoom siv tseem ceeb hauv cov txheej txheem biofilm pov tseg, feem ntau yog cov khoom ntxeem tau, cov khoom siv hauv qhov chaw siab. Nws muaj peev xwm adsorb microorganisms los tsim biofilms thiab tshem tawm cov pa phem los ntawm biodegradation thiab lub cev adsorption.
Core functions:
Muab ib qho chaw rau cov kab mob sib txuas thiab ua kom cov biomass rau ib chav tsev ntim.
Ntev lub sij hawm nyob ntawm cov kab mob thiab txhim kho kev tshem tawm ntawm cov pa phem (xws li ammonia nitrogen thiab organic teeb meem).

Fig.1 Biological muab tub lim biofilm txheej txheem tsim

II. Cov yam ntxwv ntawm biofillers

1. Hydraulic kev ua tau zoo optimization tsim
Cov khoom siv hluav taws xob ntawm cov khoom siv roj ntsha feem ntau yog tshwm sim hauv plaub qhov loj: thaj chaw tshwj xeeb, pore qauv, geometric morphology thiab ntim ntim. Cov cheeb tsam tshwj xeeb yog qhov yooj yim rau kev tswj xyuas cov biomass siab nyob rau hauv lub reactor, thiab qib biomass ncaj qha txiav txim siab cov pa phem degradation efficiency ntawm lub system. Txawm li cas los xij, qhov nce hauv thaj chaw tshwj xeeb yuav ua rau muaj kev ua haujlwm ntawm cov kua dej ib txhij, ua rau muaj kev nce hauv aeration zog noj.

Qhov loj ntawm qhov porosity ncaj qha cuam tshuam rau kev siv lub ntim zoo ntawm lub reactor. Ib qho porosity ntau dua tuaj yeem txuas ntxiv lub sijhawm nyob hauv cov dej khib nyiab, txo cov dej ntws tawm, txo qhov kev pheej hmoo ntawm kev txhaws thiab luv luv, thiab txo cov nqi ntawm cov khoom siv roj ntsha thiab cov nqi tsim kho.

2. Chemical stability yuav tsum
Lub biofiller yuav tsum yog corrosion-resistant thiab muaj peev xwm tiv taus qhov yaig ntawm cov dej khib nyiab thiab microbial metabolites. Cov khoom siv nws tus kheej yuav tsum yog inert kom tsis txhob muaj kev sib cais ntawm cov khoom tsis zoo uas ua rau muaj kev ua qias tuaj, thiab yuav tsum tsis txhob muaj cov tshuaj uas inhibit microbial kev ua ub no. Lub cev lub cev yuav tsum ua kom tau raws li qhov xav tau ntawm lub zog txhua yam thaum tswj lub teeb yuag kom txo tau qhov system load.

3. Mechanisms txhawb kev txuas biofilm
Kev ua tau zoo ntawm biofilm tsim yog nyob ntawm lub zog physicochemical ntawm biofiller:

Lub cev muaj zog:Deg roughness thiab microporous qauv yog qhov tseem ceeb. Cov chaw ntxhib tuaj yeem ua kom cov txheej txheem tsim biofilm, thaum cov txheej txheem microporous txhim kho microbial tuav los ntawm kev ua haujlwm capillary.

Chemical Properties:Cov yam ntxwv saum npoo av thiab hydrophilic thiab hydrophobic zog ua lub luag haujlwm tseem ceeb. Qhov saum npoo ntawm cov kab mob feem ntau tsis zoo, thiab qhov muaj peev xwm zoo ntawm qhov chaw ntawm biofiller tuaj yeem txhawb nqa cell txuas los ntawm electrostatic adsorption. Hydrophilic nto tuaj yeem ua rau lub voj voog tsim biofilm luv.

4. Cov khoom siv kho tshuab
Qhov sib npaug yuav tsum raug ntaus ntawm lub teeb thiab lub zog siab. Qhov zoo tshaj plaws biofiller yuav tsum muaj lub zog compressive txaus los tiv thaiv cov dej ntws cuam tshuam, thaum tswj kom muaj qhov ntom ntom kom txo qis zog siv zog.

5. Kev xav txog nyiaj txiag
Tus nqi ntawm biofillers feem ntau suav txog 30% -40% ntawm tag nrho cov peev txheej hauv cov txheej txheem biofilm, yog li nws yog ib qho tseem ceeb uas yuav tau xaiv cov khoom siv kom zoo. Cov khoom siv raw nrog ntau qhov chaw thiab kev ua haujlwm yooj yim yuav tsum tau nyiam kom ua tiav cov nqi kom zoo thaum ua kom muaj kev ua tau zoo.

III. Qhov "Tus khub zoo tshaj" Technology ntawm Biofillers

1.MBBR(Moving Bed Biofilm Reactor)
Nta:Cov khoom siv roj ntsha tuaj yeem nkag mus rau hauv lub pas dej ua ke, thiab tsis tas yuav tsum tau ntxuav tawm.
Muaj feem:High-concentration dej phwj tuaj, txhim kho cov qub dej phwj kho nroj tsuag.

Fig 2. Kev siv tswv yim ntawm MBBR txheej txheem lom neeg muab tub lim

2. Biological hu rau oxidation pas dej
Nta:Biological fillers yog tsau rau hauv lub pas dej thiab yuav tsum tau ntxuav tsis tu ncua.
Muaj feem:domestic dej phwj tuaj, low-concentration industrial wastewater.

Fig.3 Kev siv cov khoom siv roj ntsha hauv kev sib cuag oxidation

IV. Cov ntsiab lus: Xaiv cov khoom siv roj ntsha uas tsim nyog los ua kom cov dej phwj tuaj kho tau zoo dua

Biofiller yog "ecological foundations" ntawm kev kho dej phwj tuaj. Xaiv cov khoom tsim nyog thiab txheej txheem tuaj yeem txhim kho kev kho mob zoo. Nyob rau hauv lub neej yav tom ntej, nrog rau kev kho dua tshiab ntawm ib puag ncig tiv thaiv yuav tsum tau, tshiab biofillers xws li graphene thiab zeolite yuav dhau los ua kev tshawb fawb hotspot.

Cov txiaj ntsig ntawm cov khoom siv roj ntsha tsis yog tsuas yog cuam tshuam hauv kev ua kom huv hauv dej xwb, tab sis kuj los ntawm kev sib txuas ntawm cov khoom siv tshiab thiab cov txheej txheem, nws txhawb nqa kev kho dej phwj mus rau kev tsim kho cov pa roj carbon tsawg thiab cov peev txheej, thiab dhau los ua ib qho kev txhawb nqa tsis tseem ceeb hauv kev tswj hwm dej niaj hnub.