Koj puas tau ntxiv Aluminium Sulphate rau hauv koj lub thawv kho dej, xav tias yuav muaj dej ntshiab, tab sis pH poob qis thaum cov dej tseem tsis ruaj khov? Koj tsis yog tib tug xwb. Hauv kev kho dej, Alum yog lub zog loj heev, tab sis nws kuj yog ib qho tshuaj lom neeg tshwj xeeb yog tias koj tsis tswj hwm ib puag ncig.
Thaum cov txhuas sulphate sib xyaw nrog dej, nws tsis yog tsuas yog "yaj" xwb - nws ua rau muaj kev sib xyaw ua ke ntawm cov tshuaj lom neeg uas hloov pauv cov tshuaj lom neeg hauv dej hauv ob peb feeb xwb. Yog tias qhov kub, alkalinity, lossis cov tshuaj noj tsis zoo me ntsis, koj cov txheej txheem coagulation yuav tsis ua haujlwm, ua rau koj siv sijhawm thiab nyiaj txiag.
Hauv phau ntawv qhia no, peb yuav piav qhia txog cov tshuaj lom neeg tseeb tom qab cov tshuaj txhuas sulfate thiab dej sib xyaw, piav qhia vim li cas koj cov pH ua haujlwm li ntawd, thiab qhia koj yuav ua li cas thiaj tswj tau qhov kev sib xyaw kom zoo tshaj plaws rau cov pab tsiaj.
Txheej txheem cej luam ntawm Aluminium Sulfate
Aluminium sulfate, uas sawv cev los ntawm tshuaj lom neeg hu ua Al2(SO4)3, yog cov khoom dawb crystalline uas feem ntau siv rau hauv cov txheej txheem kho dej. Thaum txhuas sulfate cuam tshuam nrog dej, nws dhau los ntawm hydrolysis, ib qho tshuaj lom neeg uas cov dej molecules tawg cov tshuaj sib xyaw ua ke rau hauv nws cov ions sib xyaw. Qhov tshuaj tiv thaiv no ua lub luag haujlwm tseem ceeb hauv ntau yam kev siv, tshwj xeeb tshaj yog hauv kev ntxuav dej.
Aluminium sulfate: Hydrolysis Reaction thiab Chemical Behavior
Thaum kov dej, txhuas sulfate dissociates mus rau hauv txhuas ions (Al³⁺) thiab sulfate ions (SO₄²⁻). Cov txhuas ions ces react ntxiv nrog cov dej molecules los ntawm hydrolysis, tsim ib tug series ntawm txhuas hydroxide hom. Cov txheej txheem no yuav ua tau yooj yim li:
Al3++ 3H2O → Al(OH)3↓ + 3H+
Qhov tshwm sim yog kev tsim cov amorphous aluminium hydroxide (Al(OH)₃), uas yog cov gelatinous precipitate, nrog rau kev tso tawm ntawm hydrogen ions (H⁺), uas ua rau muaj acidity ntau ntxiv hauv cov tshuaj.
Lub Luag Haujlwm ntawm Aluminium Hydroxide
Cov txhuas hydroxide uas tsim thaum lub sijhawm hydrolysis muaj txiaj ntsig zoo li cov coagulant. Vim nws thaj chaw loj thiab muaj tus nqi zoo, nws tshem tawm cov khoom me me uas muaj tus nqi tsis zoo xws li:
- Av nplaum thiab xuab zeb
- Cov khoom siv organic
- Cov kab mob me me
Thaum cov khoom me me no poob lawv qhov ruaj khov, lawv pib sib sau ua ke ua pawg loj dua, hu ua flocs. Cov txheej txheem no yog qhov tseem ceeb rau:
- Kev sib xyaw ua ke - ua rau cov khoom me me tsis ruaj khov
- Flocculation - tsim cov khoom loj dua, uas tuaj yeem yaj tau
Cov flocs no ces tuaj yeem raug tshem tawm yooj yim los ntawm kev tso dej los yog kev lim dej, ua rau cov dej ntshiab dua thiab huv dua.
Cov Nyhuv ntawm Aluminium Sulfate rau pH thiab Alkalinity
Ib qho tseem ceeb ntawm kev ua kom cov txhuas sulfate hydrolysis yog kev tso tawm cov hydrogen ions, uas ua rau cov pH ntawm cov dej qis dua thiab txo cov alkalinity. Qhov no txhais tau tias:
- Dej yuav ua rau muaj acidity ntau dua
- Lub peev xwm buffering (alkalinity) txo qis
Hauv cov kab ke uas muaj alkalinity qis—xws li cov pas dej ua luam dej lossis qee qhov chaw dej nyoos—qhov no tuaj yeem cuam tshuam tsis zoo rau kev kho mob. Txhawm rau kom muaj kev nyab xeeb zoo tshaj plaws, alkalinity feem ntau raug kho los ntawm kev ntxiv cov tshuaj xws li sodium bicarbonate (NaHCO₃).
Kev tswj cov pH kom zoo (feem ntau nyob ib puag ncig 6.0–7.5 rau kev coagulation) yog qhov tseem ceeb rau kev ua kom zoo tshaj plaws ntawm cov coagulants uas ua los ntawm txhuas.
Aluminium Sulfate hauv Cov Ntawv Thov Kho Dej
Qhov kev sib xyaw ntawm txhuas sulfate thiab dej yog qhov tseem ceeb rau cov txheej txheem kho dej hauv nroog thiab kev lag luam. Nws yog siv dav hauv:
- Kev ntxuav dej haus
- Kev kho dej khib nyiab
- Kev ua kom dej hauv pas dej ua kom huv si
Nws qhov ua tau zoo, kev siv nyiaj tsawg, thiab yooj yim siv ua rau nws yog ib qho ntawm cov tshuaj coagulants siv ntau tshaj plaws thoob ntiaj teb.
Kev Xav Txog Ib puag ncig
Txawm hais tias txhuas sulfate muaj txiaj ntsig zoo heev, nws siv yuav tsum tau tswj kom zoo. Cov txhuas seem ntau dhau hauv cov dej kho tuaj yeem ua rau muaj kev txhawj xeeb txog ib puag ncig thiab kev cai lij choj. Yog li ntawd:
- Kev siv tshuaj kom raug yog qhov tseem ceeb
- Yuav tsum tau saib xyuas tas mus li
- Yuav tsum ua raws li cov qauv dej hauv zos kom zoo
Kev tswj hwm kom zoo ua kom muaj kev kho mob zoo thiab kev nyab xeeb rau ib puag ncig.
Thaum txhuas sulfate sib xyaw nrog dej, nws dhau los ua hydrolysis los tsim cov txhuas hydroxide thiab hydrogen ions. Cov txhuas hydroxide ua rau ua haujlwm ua cov coagulant muaj zog, ua rau tshem tawm cov khoom tsis huv uas raug tshem tawm los ntawm kev coagulation thiab flocculation.
Yog tias tswj tau pH, kev ntsuas tshuaj, thiab kev saib xyuas kom zoo, txhuas sulfate tseem yog ib qho kev daws teeb meem txhim khu kev qha thiab ua tau zoo rau cov tshuab kho dej niaj hnub no.
Lub sijhawm tshaj tawm: Lub Peb Hlis-05-2024
