Nyob rau hauv diatomite dej phwj kho tej yaam num, ntau yam txheej txheem xws li neutralization, flocculation, adsorption, sedimentation thiab pom cov dej phwj yog feem ntau ua.Diatomitemuaj lub cev thiab tshuaj lom neeg tshwj xeeb. Diatomite tuaj yeem txhawb nqa qhov nruab nrab, flocculation, adsorption, sedimentation thiab pom cov dej phwj tshem tawm cov khib nyiab hauv cov txheej txheem dej phwj los ntawm kev hloov pauv txawv xws li pulverization, ziab, xaiv thiab calcination. Muaj nuj nqi.
Lub hauv paus ntsiab lus ntawm diatomite dej phwj kho:
1. Inter-particle dipole kev sib cuam tshuam: Qhov saum npoo ntawm diatomite hais yog them thiab tuaj yeem adsorb dipolar molecules (atoms) ntawm polar media, ua rau cov dipole molecules (atoms) spontaneously unipolar orientation ntawm cov diatomite. Thaum cov diatomite muab tso rau hauv cov dej phwj tuaj, qhov qub polarity tshuav ntawm cov dej phwj tuaj yog tawg, thiab lub zog dipole ua haujlwm los txhawb kev sib koom ua ke ntawm colloidal hais thiab polar molecules (atoms) hauv cov dej phwj tuaj ntawm lub ntiaj teb diatomaceous los tsim cov agglomeration. Yooj yim cais.
2. Flocculation: Flocculation yog txheej txheem uas cov khoom me me los yog agglomerates ntawm cov khoom me me tsim cov flocs loj. Ntxiv kev hloov kho diatomaceous lub ntiaj teb rau cov dej phwj tuaj thiab ua kom muaj kev ntxhov siab thiab kev laus kev kho mob ntawm cov kab mob dispersion tuaj yeem ua kom ruaj khov loj flocs ntawm cov khoom tsis zoo hauv cov dej phwj tuaj. Qhov no yog ib qho tseem ceeb ntawm kev sib cais ntawm cov kua-kua ntawm cov dej phwj tuaj, uas tsis yog tsuas yog txo cov nqi tswj cov pa phem, tab sis kuj txhim kho kev sib cais.
3. Adsorption: Adsorption yog cov nyhuv nto. Qhov saum npoo ntawm diatomaceous lub ntiaj teb nrog loj dispersion muaj ib tug loj deg dawb zog thiab nyob rau hauv ib tug heev thermodynamically tsis ruaj tsis khov lub xeev, yog li nws muaj ib tug nyiam adsorb lwm yam tshuaj los txo lub zog nto. Diatomaceous lub ntiaj teb tuaj yeem nqus cov pab pawg flocculation, qee cov kab mob kab mob thiab cov teeb meem ultra-fine hauv cov dej phwj tuaj rau sab hauv thiab sab nrauv ntawm lub cev diatom, tsim ib pawg loj loj nyob hauv lub cev diatom. Tsis tas li ntawd, lub ntiaj teb diatomaceous kuj yog qhov nruab nrab zoo rau cov kab mob, yog li nws yog ib qho zoo rau cov kab mob microbial nyob rau hauv dej phwj biochemical kho tej yaam num.
4. Lim: Diatomite yog qhov tsis muaj zog. Tom qab ib qho kev hloov kho diatomite ntxiv rau cov dej phwj tuaj, nws tuaj yeem khom sai sai los tsim cov khoom ntxeem tau lub txaj, uas yooj yim rau sludge dewatering thiab slag tshem tawm kev kho mob. Cov dej phwj tuaj yog lim los ntawm lub txaj lim kom cov kab mob loj, fungi, pawg flocculation, thiab cov khoom cuam tshuam thiab lim tawm hauv cov txheej txheem. Lub series ntawm diatomite dej phwj kho cov neeg ua hauj uas tsim los ntawm peb lub tuam txhab siv hloov kho technology yog dav siv nyob rau hauv kev kho mob ntawm industrial thiab nroog cov dej phwj tuaj. Cov neeg siv tuaj yeem xaiv ib lossis ntau qhov kev sim ua ke raws li cov xwm txheej tshwj xeeb kom ua tiav cov txiaj ntsig xav tau.
Cov av dawb muaj npe tom qab grey-dawb dawb pulp txheej hauv qab txheej humus. Tshaj tawm nyob rau sab hnub tuaj toj roob hauv pes thiab hav ntawm Northeast Tuam Tshoj, kev nyab xeeb yog av noo, thiab cov nroj tsuag hom yog hygroscopic ntiav-rooted nroj tsuag. Kev sib sau ntawm cov av organic teeb meem tsawg dua li cov av dub. Vim tsis zoo decomposition ntawm cov organic teeb meem, nws feem ntau muaj peatification yam ntxwv. Cov ntsiab lus ntawm cov organic teeb meem nyob rau hauv txheej txheej ntawm albic av txog li 8-10%, qhov zoo nkauj nyob rau hauv lub albic txheej feem ntau hnyav loam thiab av nplaum; lub albic txheej yog lub teeb nyob rau hauv kev ntxhib los mos, thiab hlau leaching yog pom tseeb heev. Cov av nplaum pob zeb feem ntau yog hydromica nrog me me ntawm kaolinite thiab amorphous tshuaj.
Diatomaceous ntiaj teb yog tsim los ntawm amorphous SiO2, thiab muaj me me ntawm Fe2O3, CaO, MgO, Al2O3 thiab cov organic impurities. Diatomaceous ntiaj teb feem ntau yog lub teeb daj lossis lub teeb grey, mos, ntxeem tau thiab lub teeb. Nws yog feem ntau siv nyob rau hauv kev lag luam raws li cov ntaub ntawv rwb thaiv tsev, cov ntaub ntawv lim, muab tub lim, cov ntaub ntawv abrasive, dej iav raw cov ntaub ntawv, decolorants thiab catalyst carriers. Cov qauv ntxeem tshwj xeeb ntawm lub ntiaj teb diatomaceous tuaj yeem pom nyob rau hauv lub tshuab tsom. Cov qauv microporous no yog vim li cas rau cov yam ntxwv ntawm lub cev thiab tshuaj lom neeg ntawm lub ntiaj teb diatomaceous. Lub ntsiab tseem ceeb ntawm lub ntiaj teb diatomaceous ua tus cab kuj yog SiO2. Diatomaceous ntiaj teb feem ntau yog tsim los ntawm cov seem ntawm silicate tom qab kev tuag ntawm ib leeg-celled algae collectively hu ua diatoms, thiab nws essence yog dej-muaj amorphous SiO2. Diatoms hauv dej tshiab thiab Muaj ntau hom diatoms uas tuaj yeem muaj sia nyob hauv dej ntsev. Feem ntau, lawv tuaj yeem muab faib ua "central order" diatoms thiab "plumbing order" diatoms. Hauv txhua qhov kev txiav txim, muaj ntau "genus", uas yog qhov nyuaj heev. Lub ntsiab tseem ceeb ntawm lub ntiaj teb diatomaceous yog SiO2, cov khoom zoo yog xim dawb, thiab SiO2 cov ntsiab lus feem ntau tshaj 70%. Monomer diatoms tsis muaj xim thiab pob tshab. Cov xim ntawm lub ntiaj teb diatomaceous nyob ntawm cov av nplaum ntxhia thiab cov organic teeb meem. Cov muaj pes tsawg leeg ntawm diatoms ntawm cov pob zeb hauv av sib txawv yog txawv. Diatomaceous ntiaj teb yog fossilized diatomaceous ntiaj teb deposit tsim tom qab tuag ntawm ib leeg-celled nroj tsuag hu ua diatom tom qab ib tug accumulator lub sij hawm ntawm txog 10,000 mus rau 20,000 xyoo. Diatoms yog ib qho ntawm thawj protists tshwm sim hauv ntiaj teb, nyob hauv dej hiav txwv lossis dej pas dej. Nws yog lub diatom no uas muab cov pa oxygen rau lub ntiaj teb los ntawm photosynthesis thiab txhawb kev yug me nyuam ntawm tib neeg, tsiaj txhu thiab nroj tsuag.
Post lub sij hawm: Aug-12-2021