Vim li cas thiaj xaiv polyaluminium chloride rau kev kho dej

Kev kho dej yog ib qho tseem ceeb ntawm kev tiv thaiv ib puag ncig thiab kev noj qab haus huv, thiab nws lub hom phiaj yog kom ntseeg tau tias muaj dej zoo thiab ua tau zoo ntawm ntau yam kev siv. Ntawm ntau txoj kev kho dej,Polyaluminium chloride(PAC) yog dav dav rau nws cov khoom tshwj xeeb thiab cov txiaj ntsig hnyav sib xyaw.

Kev ua tau zoo tshaj plaws: PAC muaj kev ua kom zoo dua qub thiab tuaj yeem hloov kho cov kab mob xws li cov teeb meem ensolule thiab insoluble cov organic teeb meem hauv dej thiab txhim kho cov dej ua kom zoo.

Coagulation mechanism ntawm PAC

Lub tshuab ntawm polyaluminium chloride (PAC) ua cov sib xyaw ua ke suav nrog kev sib xyaw ntawm cov txheej hluav taws xob ob chav, them neutralization thiab cov cuab yeej. Compression ntawm ob lub hluav taws xob txheej txhais tau hais tias tom qab ntxiv cov txheej txheem colloidal nyob rau saum npoo ntawm colloidal hais, ua rau lawv mus ua hmoov thiab tab kaum; Adsorption Bridging yog cov cations nyob rau hauv lub PAC molecules nyiam txhua lwm yam thiab cov nqi tsis zoo ntawm cov "choj" qauv los txuas ntau tus colloidal hais; Qhov nyhuv netting yog los ntawm kev tshaj tawm thiab bridging nyhuv ntawm lub PAC lwg thiab colloidal hais, uas nets cov lus colloidal. Ntes tau nyob rau hauv lub network ntawm coagulant molecules.

Polyaluminium chloride dej kho cov dej kho

Piv nrog inorganic flocculants, nws tau txhim kho cov decolorization nyhuv ntawm dyes. Nws cov tshuab kev ua yog tias PAC tuaj yeem txhawb cov zas xim kom zoo los ua cov flocs uas zoo los ntawm cov txheej txheem hluav taws xob.

Thaum Pam yog siv hauv kev sib xyaw nrog PAC, cov anionic organic polymules siv tau cov txiaj ntsig zoo nkauj los tsim cov flother flocs nrog kev koom tes ntawm cov neeg sawv cev txoj kev ua kom zoo. Cov txheej txheem no yuav pab txhim kho cov nyhuv daws teeb meem thiab ua rau cov hlau hnyav ons yooj yim kom tshem tawm. Tsis tas li ntawd, cov pawg loj ntawm cov pab pawg muaj nyob hauv cov saw hlau ntawm anionic polyacrylamide molecrylamide molecules tuaj yeem tsim cov ionic Bonds nrog -son nyob rau hauv zas molecules. Qhov tsim ntawm cov cai no chemical txo tus thwj zis ntawm cov organic flocculant nyob rau hauv dej, yog li txhawb kev tsim nrawm thiab nag lossis daus ntawm flocs. Qhov sib sib zog nqus me ntsis tshuab ua rau nws nyuaj rau cov hlau hnyav rau kev khiav tawm, txhim kho kev ua haujlwm.

Hais txog phosphorus tshem tawm, qhov ua tau zoo ntawm polyaluminum chloride tsis tuaj yeem tsis quav ntsej. Thaum ntxiv rau phosphorus-muaj dej khib nyiab, nws tuaj yeem hydrolyze los tsim cov khoom siv tsis yooj yim ions. Qhov txheej txheem no khi rau soluble phosphat rau hauv cov dej khib nyiab, hloov pauv tom kawg rau hauv insoluble phosplehate precipitates. Cov txheej txheem hloov dua tshiab no tau tshem tawm cov phosphate ions los ntawm cov dej khib nyiab thiab txo qhov tsis zoo ntawm phosphorus ntawm cov dej lub cev.

Ntxiv nrog rau qhov tshuaj tiv thaiv ncaj qha nrog phosphate, cov txiaj ntsig sib xyaw ntawm polyaluminum tshuaj dawb kuj ua lub luag haujlwm tseem ceeb hauv phosphorus tshem tawm cov txheej txheem. Nws tuaj yeem ua tiav kev kos duab thiab cov nkauj tawg paj los ntawm kev nqus cov txheej txheem ntawm cov nplais ntawm cov phosphate ions. Tus txheej txheem no ua rau phosphatates thiab lwm cov pa phem organic nyob rau hauv cov dej qias neeg hauv cov nplais, ua cov flocs uas yooj yim los khom.

Tseem ceeb tshaj, rau cov khoom muaj txiaj ntsig zoo heev tsim tawm tom qab ntxiv phosphorus tshem tawm, thiab tom qab ntawd condense, aggregate, thiab flocculate rau hauv hais kom loj. Cov lus no tom qab txiav txim mus rau hauv qab txheej, thiab los ntawm cov kua-kua sib cais, cov kua roj somnnatant tuaj yeem tso tawm, yog li ua tiav tau zoo phosphorus tshem tawm. Cov koob no ntawm cov txheej txheem ntawm lub cev thiab nqaij tawv nqaij ua kom muaj kev phom sij thiab muaj peev xwm ua kom muaj kev tiv thaiv kev tiv thaiv kev tiv thaiv ib puag ncig thiab dej pab.