Cov Lus Tseem Ceeb ntawm Tsab Xov Xwm: Aluminium Sulfate, Ferrous Sulfate, Polyaluminum Chloride (PAC), Polyacrylamide (PAM)
Aluminium sulfate yog ib qho tshuaj inorganic uas muaj cov tshuaj Al₂(SO₄)₃, qhov hnyav molecular ntawm 342.15, thiab cov tsos dawb crystalline. Raws li ib tug neeg sawv cev tseem ceeb hauv kev kho dej, nws lub luag haujlwm tseem ceeb yog tsim cov khoom colloidal los ntawm kev ua hydrolysis reactions; cov khoom no adsorb thiab precipitate suspended solids, colloids, thiab qee yam dissolved impurities uas muaj nyob hauv dej, yog li ua tiav dej purification. Nws cov xwm txheej daim ntawv thov npog ntau qhov chaw, suav nrog kev kho dej haus, kev kho dej khib nyiab hauv kev lag luam, kev npaj cov neeg sawv cev rosin sizing hauv kev lag luam papermaking, thiab roj av decolorization.
I. Cov Ntsiab Cai Kev Txawj Ntse thiab Cov Haujlwm Tseem Ceeb:
Thaum cov txhuas sulfate yaj hauv dej, cov txhuas ions (Al³⁺) khi nrog cov dej molecules los tsim cov txhuas ions hydrated, uas tom qab ntawd dhau los ntawm hydrolysis ntxiv los tsim cov txhuas hydroxide colloids. Cov nplaim ntawm cov colloids no nqa cov nqi zoo, ua rau lawv tuaj yeem tshem tawm cov nqi tsis zoo ntawm cov khoom me me hauv dej. Qhov kev ua kom tsis muaj zog no cuam tshuam rau cov khoom me me 'kev ruaj khov, txhawb lawv cov kev sib sau ua ke rau hauv cov flocs loj dua (clumps), uas thaum kawg raug sib cais los ntawm kev tso dej lossis kev lim dej. Tag nrho cov txheej txheem no hu ua "coagulation-sedimentation" thiab yog ib kauj ruam tseem ceeb hauv kev kho dej. Ntxiv mus, txhuas sulfate tuaj yeem ua rau muaj kev cuam tshuam nrog qee cov hlau hnyav ions uas muaj nyob hauv dej (xws li hlau thiab manganese) los tsim cov dej tsis yaj, yog li pab tshem tawm cov pa phem uas yaj.
Aojin Chemical muaj ntau yam khoom siv kho dej muag, suav nrog txhuas sulfate, ferrous sulfate,Polyaluminum Chloride (PAC), thiab Polyacrylamide (PAM)Cov neeg siv khoom raug txhawb kom xaiv cov khoom raws li lawv cov kev xav tau tshwj xeeb. Peb txais tos txhua tus neeg uas xav tau cov khoom siv kho dej hu rau Aojin Chemical!
II. Cov Xwm Txheej Thov thiab Kev Xav Txog Kev Ua Haujlwm:
Hauv kev kho dej haus, txhuas sulfate feem ntau yog siv ua ke nrog cov tshuaj pab coagulant—xws li cov pa roj carbon activated lossis polyacrylamide—kom tshem tawm cov turbidity, algae, thiab cov organic matter. Hauv kev kho dej khib nyiab hauv kev lag luam, cov tshuaj aluminium sulfate yuav tsum tau kho raws li cov dej pH: nyob rau hauv cov xwm txheej acidic, qhov hydrolysis ntawm txhuas ions ua haujlwm tau zoo; txawm li cas los xij, kev noj tshuaj ntau dhau yuav ua rau cov txhuas seem hauv cov dej khib nyiab kho uas tshaj qhov txwv tsis pub dhau. Ntawm qhov tod tes, hauv cov chaw alkaline, nws yog qhov tsim nyog los ntxiv cov neeg sawv cev kho pH (xws li txiv qaub ntsuab) kom ua kom zoo dua qhov ua tau zoo ntawm flocculation. Hauv kev lag luam ua ntawv, txhuas sulfate ua haujlwm ua tus neeg sawv cev rau rosin sizing; nws reacts nrog rosin acids los tsim cov xab npum txhuas insoluble, yog li ua kom daim ntawv tiv taus dej. Hauv thaj chaw ntawm roj av decolorization, cov khoom siv adsorptive yog siv los tshem tawm cov pos hniav thiab asphaltenes ntawm cov khoom roj. III. Cov txiaj ntsig kev siv tshuab thiab kev ua tau zoo:
Piv rau lwm cov flocculants (xws li cov ntsev hlau), txhuas sulfate muaj cov yam ntxwv hauv qab no: Ua ntej, cov colloidal txhuas hydroxide tsim tawm thaum lub sijhawm hydrolysis muaj qhov loj me sib npaug thiab kev ua haujlwm siab flocculation, yog li txo cov tshuaj uas xav tau. Qhov thib ob, nws ua haujlwm thoob plaws ntau yam pH (5.5–8.5), tshem tawm qhov xav tau kev hloov kho ntau ntawm cov kua qaub lossis alkalinity ntawm cov dej. Qhov thib peb, cov txhuas ions seem tuaj yeem raug tshem tawm ntxiv los ntawm cov txheej txheem kho tom qab (xws li kev lim xuab zeb lossis kev nqus cov pa roj carbon activated), yog li txo qhov kev pheej hmoo ntawm kev ua qias tuaj thib ob. Cov ntaub ntawv sim qhia tias thaum kho cov dej ntws uas muaj turbidity siab, cov tshuaj txhuas sulfate ntawm 30–50 mg / L tuaj yeem ua tiav qhov kev tshem tawm turbidity ntau dua 90%, ua kom ntseeg tau tias cov dej khib nyiab kho tau raws li cov qauv huv rau cov dej haus hauv tsev.
IV. Cov Lus Qhia Txog Kev Nyab Xeeb thiab Kev Khaws Cia:
Nws yog ib qho tseem ceeb kom tsis txhob muab cia ua ke nrog cov hauv paus muaj zog lossis cov neeg sawv cev oxidizing muaj zog kom tiv thaiv kev ua kom tsis muaj zog. Qhov chaw cia khoom yuav tsum tau khaws cia kom qhuav thiab tswj hwm ntawm qhov kub hauv qab 50 ° C kom tiv thaiv cov khoom kom tsis txhob nqus cov dej noo thiab ua pob. Thaum lub sijhawm tuav, yuav tsum hnav hnab looj tes tiv thaiv thiab tsom iav kev nyab xeeb kom tiv thaiv kev ua pa plua plav lossis kev sib cuag ntawm daim tawv nqaij. Yog tias muaj kev sib cuag tsis raug nrog lub qhov muag, tam sim ntawd yaug nrog dej huv ntau thiab nrhiav kev kho mob. Thaum lub sijhawm thauj mus los, yuav tsum tau ceev faj kom tiv thaiv cov khoom kom tsis txhob muaj dej noo thiab kev puas tsuaj rau lub cev, kom ntseeg tau tias cov ntim khoom muaj kev ncaj ncees.
Lub sijhawm tshaj tawm: Lub Peb Hlis-25-2026
