Aluminium yog dav faib nyob rau hauv lub ntiaj teb crust, nrog rau cov ntsiab lus siab li 8.8%, qeb thib peb tsuas yog oxide thiab silicon. Aluminium muaj nyob rau hauv cov zaub mov, dej haus thiab tshuaj tiv thaiv cov kua qaub, thiab cov kev tshawb fawb pom tau hais tias txhuas muaj feem xyuam rau Alzheimer's kab mob. Yog li ntawd, qhov teeb meem ntawm ntau dhau ntawm txhuas nyob rau hauv cov dej ntws ntawm cov nroj tsuag dej tau dhau los ua ib qho ntawm cov teeb meem tseem ceeb hauv cov txheej txheem dej, thiab nws kuj yog ib qho tseem ceeb ntawm kev txhim kho cov dej zoo ntawm cov dej haus zoo.
Thaum cov ntsev txhuas siv los ua cov tshuaj kho dej, cov yam ntxwv cuam tshuam rau cov ntsiab lus txhuas ntawm cov effluent feem ntau suav nrog pH ntawm cov dej, dej kub, thiab alkalinity. Tag nrho cov xyoo no ntawm kev xyaum-kev txhim kho, nws tau pom tias qhov tseem ceeb tshaj plaws cuam tshuam rau cov ntsiab lus txhuas ntawm cov effluent yog pH ntawm cov dej, qhov cuam tshuam ntawm dej kub thiab alkalinity ntawm txhuas, uas kuj yog pH ntawm cov dej. dej nyoos hauv qhov kev ntsuam xyuas zaum kawg. Hauv kev txheeb xyuas kev sib raug zoo ntawm cov dej kub thiab cov ntsiab lus txhuas, nws pom tau tias muaj qhov sib txawv pH zoo tshaj plaws rau kev tshem tawm txhuas nyob rau hauv cov dej kub sib txawv. Raws li nws txo qis, muaj qhov tshwm sim uas cov effluent aluminium nce nrog qhov nce ntawm cov dej kub. Hauv kev txheeb xyuas kev sib raug zoo ntawm kev cuam tshuam ntawm alkalinity thiab txhuas cov ntsiab lus, nws pom tau tias nyob rau hauv cov txheej txheem coagulation ntawm kev kho dej, cov tshuaj kho dej siv muaj cov kua qaub, qhov no ntawm cov kua qaub ua ntej yuav tsum tau siv los ua kom tsis txhob muaj cov alkalinity ntawm cov dej. dej. Qib ntawm alkalinity kuj txiav txim siab npaum li cas ntawm cov kua qaub uas siv hauv cov dej purifier. Cov kua qaub ntxiv uas siv los txo cov pH hauv dej tus neeg sawv cev kuj tsawg dua, yog li qhov siab dua cov alkalinity ntawm cov dej nyoos, qhov tsis pom tseeb ntawm kev txo cov txhuas.
Kev siv tshuaj hydrochloric acid.
Tam sim no, qee lub tuam txhab dej tau txais cov txheej txheem kev siv cov pa roj carbon dioxide, uas yog nyob rau tib qeb raws li cov txheej txheem tshuaj hydrochloric acid. Lub ntsiab lus ntawm cov tshuaj hydrochloric acid yog cov dej nyoos nqus dej zoo, thiab cov tshuaj hydrochloric acid raug kho raws sijhawm raws li pH ntawm cov dej tom qab ntxiv cov kua qaub (tswj tus nqi 7.4-7.8). Hauv kev xyaum, pH hauv online meter yog siv los saib xyuas seb cov tshuaj npaum li cas ntawm cov kua qaub yog qhov tsim nyog, tom qab siv cov txheej txheem no, tus nqi ntawm cov tshuaj hydrochloric acid kuj pheej yig.
Aluminium sulfate
Kev kho mob ntawm aluminium sulfate.
Raws li peb qhov kev coj ua, qhov cuam tshuam ntawm kev txo qis aluminium yog qhov nruab nrab. Nyob rau hauv cov ntaub ntawv ntawm cov hnub kub kub tsis tu ncua, lub ex-Factory aluminium twb nyuam qhuav tswj ntawm li ntawm 0.10mg/L. Qhov tsis zoo ntawm cov txheej txheem yog ua kom tau raws li qhov yuav tsum tau ua ntawm lub Hoobkas ua ntej aluminium qis dua 0.10mg / L, qhov ntau npaum ntawm aluminium sulfate yog ob zaug ntau npaum li cov pa polyaluminium, thiab tus nqi ntawm txhuas sulfate ib tuj dej yog. 120% siab dua li cov pa polyaluminium.
Acidified polyaluminium chloride dosing.
Los ntawm kev txo qis pH tus nqi ntawm polyaluminium chloride, thaum cov tshuaj kho dej ntxiv rau cov nroj tsuag dej, lub hom phiaj ntawm kev txo cov pH ntawm cov dej nyoos yog ua tiav tsis ncaj. Txawm li cas los xij, vim tias qhov ntxiv ntawm hydrochloric acid ntxiv rau hauv cov txheej txheem tsim khoom ntawm polyaluminium, nws cov pH tsis ua raws li cov cai ntawm qee lub tebchaws 'Standards.
Polyaluminium Chloride
Yog li, puas muaj lwm txoj kev daws teeb meem zoo dua? Tej zaum nws yog qhov zoo dua los nrhiav txoj hauv kev los txhim kho cov ntsiab lus ntawm flocculants nws tus kheej. Nyob rau hauv xyoo tas los no, peb tau tshawb nrhiav thiab ua pov thawj tias qhov siab salinity polyaluminum chloride thiab hlau ntsev coagulation pab kuj muaj cov txiaj ntsig ntawm kev txo cov txhuas hauv kev ua haujlwm ntawm aluminium txo kev tshawb fawb, thiab ua ib qho kev sim me me, kev sim thiab kev nce qib thiab daim ntawv thov. ua haujlwm.
Hauv cov tshuaj tiv thaiv hydrolysis ntawm polyaluminium, nws cov txhuas ion muaj peb daim ntawv hydrolyzed, uas yog Ala (ib daim ntawv nuclear), Alb (daim ntawv polymerization nruab nrab), Alc (inert state polymeric macromolecule lossis sol polymer), qhov feem ntawm Alc yog qhov zoo sib xws. nrog lub hauv paus ntawm polyaluminium. Tom qab hydrolysis ntawm polyaluminium nrog salinity siab, Alc yog cov ntsiab lus tseem ceeb, thaum Ala suav rau ib qho me me, uas yog qhov zoo rau kev txhim kho cov nyhuv coagulation thiab txo cov solubility ntawm txhuas hauv dej. Tus thawj polyaluminium (nrog rau lub hauv paus ntawm 60-70%) yog hloov mus rau ib tug high-basic polyaluminium (nrog rau lub hauv paus ntawm ntau tshaj 80%), thiab cov thawj dosing chaw, txheej txheem thiab ntau npaum li cas yog tas mus li. Tom qab siv cov txheej txheem no, nyob rau hauv qhov kev ua tiav ntawm kev ua tiav cov txiaj ntsig ntawm kev tswj hwm ntawm txhuas, tus nqi ntawm polyaluminium tus neeg sawv cev nrog siab salinity ib tuj dej yog 60% qis dua qhov ntxiv aluminium sulfate.