Hauv kev ua zaub mov, ntau tshaj phosphorus hauv cov khoom noj khoom haus khib nyiab yog ib qho teeb meem tshwm sim. Cov laj thawj tseem ceeb rau cov ntsiab lus phosphorus hauv cov dej khib nyiab yog raws li hauv qab no:
1. Raw cov ntaub ntawv lawv tus kheej muaj phosphorus: cov khoom xyaw xws li nplej, zaub, nqaij, thiab lwm yam. ib txwm muaj ib tug npaum li cas ntawm phosphorus, uas yog ib tug indispensable nyob rau hauv kev loj hlob ntawm lom. Thaum lub sij hawm ntxuav ua ntej ua zaub mov, ib feem ntawm cov phosphorus yuav yaj mus rau hauv dej, ua kom cov phosphorus cov ntsiab lus nyob rau hauv cov dej khib nyiab.
2. Khoom noj khoom haus additives thiab kev pab ua: Nyob rau hauv cov txheej txheem ua zaub mov, ntau yam additives yog siv los txhim kho cov xim, aroma, saj, thiab txee lub neej ntawm cov zaub mov, xws li preservatives, seasoning agents, stabilizers, thiab lwm yam. Cov additives no tej zaum yuav muaj phosphorus compounds. , thiab cov khoom uas tsis tau nqus los ntawm cov khoom tom qab siv yuav raug tso tawm nrog cov dej khib nyiab.
3. Kev siv cov tshuaj detergents: Cov tshuaj detergents feem ntau yog siv los ntxuav cov khoom siv raw thiab cov txheej txheem ntxuav. Ntau cov tshuaj detergents muaj phosphorus, tshwj xeeb tshaj yog thaum ntxov phosphorus uas muaj cov ntxhua khaub ncaws ntxhua khaub ncaws thiab cov neeg ua haujlwm tu, uas tuaj yeem ua kom cov phosphorus concentration hauv cov dej khib nyiab.
4. Decomposition ntawm tsiaj thiab cog cov ntaub so ntswg: Nyob rau hauv kev ua cov nqaij thiab cov khoom siv mis nyuj, cov decomposition ntawm cov tsiaj cov ntaub so ntswg tsim cov organic tshuaj uas muaj phosphorus, ntxiv phosphorus nyob rau hauv cov dej khib nyiab.
5. Kev ua haujlwm ntawm microbial: Thaum lub sij hawm ua zaub mov, kev loj hlob thiab cov metabolism hauv cov kab mob kuj tsim cov phosphorus tebchaw, tshwj xeeb tshaj yog nyob rau hauv fermentation thiab lwm yam txheej txheem, uas kuj nkag mus rau cov dej khib nyiab.
6. Cov khoom noj seem seem: Hauv kev ua cov khoom siv tsiaj, xws li cov khoom siv mis nyuj thiab nqaij, cov khoom siv phosphorus hauv cov tsiaj noj uas tsis tau nqus tag nrho (xws li phytate phosphorus) yuav nkag mus rau hauv cov dej khib nyiab los ntawm cov tsiaj txhu.
Cov chaw phosphorus no ua haujlwm ua ke, ua rau muaj phosphorus cov ntsiab lus hauv cov dej khib nyiab tsim los ntawm kev ua zaub mov. Yog tias tsis kho thiab tso tawm ncaj qha, nws tuaj yeem ua rau eutrophication ntawm cov dej tau txais lub cev, ua rau kev loj hlob ntawm algae ntau dhau thiab tsis sib npaug hauv cov dej hauv dej. Yog li ntawd, kev siv cov tshuaj phosphorus tshem tawm tau zoo yog qhov tseem ceeb rau kev tiv thaiv ib puag ncig.
Khoom noj khoom haus cov dej khib nyiab muaj biodegradability zoo thiab feem ntau yog kho los ntawm biochemical txoj kev, siv cov yam ntxwv ntawm polyphosphate accumulating kab mob kom nqus thiab tso phosphorus nyob rau hauv aerobic thiab anaerobic tej yam kev mob los kho cov dawb phosphorus nyob rau hauv dej. Nyob rau tib lub sijhawm, phosphorus tshem tawm cov neeg ua haujlwm kuj tau siv dav hauv qhov sib sib zog nqus phosphorus tshem tawm cov dej khib nyiab. Lub hauv paus ntsiab lus ntawm kev ua haujlwm ntawm phosphorus tshem tawm cov neeg ua haujlwm feem ntau yog ua raws cov tshuaj los nag, flocculation, thiab adsorption mechanisms kom tshem tawm cov phosphorus los ntawm dej. Phosphorus tshem tawm cov neeg ua haujlwm muaj kev ua haujlwm zoo flocculation thiab nplua nuj nyob rau hauv cov pab pawg ua haujlwm uas tuaj yeem khi nrog phosphate ions, tsim hydrophobic flocculent precipitates. Phosphorus tshem tawm cov neeg ua haujlwm muaj kev kho mob siab thiab ua haujlwm sai, thiab tuaj yeem txo tag nrho cov ntsiab lus phosphorus kom qis dua 0.1mg/L. Yog li ntawd, phosphorus tshem tawm cov neeg ua haujlwm feem ntau yog siv ua ke nrog ntau yam phosphorus tshem tawm cov txheej txheem thiab tau siv dav hauv kev sib sib zog nqus phosphorus tshem tawm cov dej khib nyiab.