Muaj ntau hom hnab ntim khoom noj uas siv rau ntim khoom noj, thiab lawv muaj lawv tus kheej kev ua tau zoo thiab cov yam ntxwv. Hnub no peb yuav tham txog qee qhov kev paub siv feem ntau ntawm cov hnab ntim khoom noj rau koj siv. Yog li lub hnab ntim khoom noj yog dab tsi? Cov hnab ntim khoom noj feem ntau yog cov yas zoo li daim ntawv uas muaj qhov tuab tsawg dua 0.25 hli ua cov yeeb yaj kiab, thiab cov khoom ntim yooj ywm ua los ntawm cov yeeb yaj kiab yas yog siv dav hauv kev lag luam khoom noj. Muaj ntau hom hnab ntim khoom noj. Lawv yog pob tshab, yoog tau, muaj cov khoom tiv thaiv dej zoo, tiv thaiv dej noo thiab cov khoom tiv thaiv roj, lub zog kho tshuab zoo, cov khoom siv tshuaj ruaj khov, tiv thaiv roj, yooj yim luam tawm zoo nkauj, thiab tuaj yeem kaw rau hauv cov hnab cua sov. Ntxiv mus, cov khoom ntim khoom noj yooj ywm feem ntau yog tsim los ntawm ob lossis ntau txheej ntawm cov yeeb yaj kiab sib txawv, uas feem ntau tuaj yeem faib ua txheej sab nraud, txheej nruab nrab thiab txheej sab hauv raws li lawv qhov chaw.
Cov kev cai rau kev ua haujlwm ntawm txhua txheej ntawm cov yeeb yaj kiab ntim khoom noj uas siv ntau yog dab tsi? Ua ntej tshaj plaws, cov yeeb yaj kiab sab nraud feem ntau yog luam tawm tau, tiv taus khawb, thiab tiv taus cov ntaub ntawv. Cov ntaub ntawv siv feem ntau suav nrog OPA, PET, OPP, thiab cov yeeb yaj kiab coated. Cov yeeb yaj kiab txheej nruab nrab feem ntau muaj cov haujlwm xws li thaiv, ntxoov ntxoo lub teeb, thiab kev tiv thaiv lub cev. Cov ntaub ntawv siv feem ntau suav nrog BOPA, PVDC, EVOH, PVA, PEN, MXD6, VMPET, AL, thiab lwm yam. Tom qab ntawd muaj cov yeeb yaj kiab sab hauv, uas feem ntau muaj cov haujlwm ntawm thaiv, kaw, thiab tiv thaiv cov ntaub ntawv. Cov ntaub ntawv siv feem ntau yog CPP, PE, thiab lwm yam. Tsis tas li ntawd, qee cov ntaub ntawv muaj ob txheej sab nraud thiab txheej nruab nrab. Piv txwv li, BOPA tuaj yeem siv ua txheej sab nraud rau kev luam ntawv, thiab kuj tuaj yeem siv ua txheej nruab nrab los ua lub luag haujlwm ntawm kev thaiv thiab kev tiv thaiv lub cev.
Cov yam ntxwv ntawm cov zaj duab xis ntim khoom noj uas siv ntau, feem ntau hais lus, cov khoom txheej sab nraud yuav tsum muaj kev tiv thaiv khawb, tiv thaiv kev tho, tiv thaiv UV, tiv thaiv lub teeb, tiv thaiv roj, tiv thaiv cov khoom siv organic, tiv thaiv kub thiab txias, tiv thaiv kev ntxhov siab tawg, luam tawm, ruaj khov kub, tsis muaj ntxhiab tsw, tsis muaj ntxhiab tsw, tsis muaj tshuaj lom, ci, pob tshab, ntxoov ntxoo thiab ntau yam khoom; cov khoom txheej nruab nrab yuav tsum muaj kev tiv thaiv kev cuam tshuam, tiv thaiv kev nias, tiv thaiv kev tho, tiv thaiv dej noo, tiv thaiv roj, khaws cov tshuaj tsw qab, tiv thaiv lub teeb, tiv thaiv roj, tiv thaiv cov khoom siv organic, tiv thaiv kub thiab txias, tiv thaiv kev ntxhov siab tawg, muaj zog sib xyaw ob sab, saj tsis zoo, tsis muaj ntxhiab tsw, tsis muaj tshuaj lom, pob tshab, tiv thaiv lub teeb thiab lwm yam khoom; ces cov khoom txheej sab hauv, ntxiv rau qee yam khoom zoo ib yam nrog txheej sab nraud thiab txheej nruab nrab, kuj muaj nws cov khoom tshwj xeeb, uas yuav tsum muaj kev khaws cov tshuaj tsw qab, tsis tshua muaj kev nqus thiab tiv thaiv kev nqus. Kev txhim kho tam sim no ntawm cov hnab ntim khoom noj yog raws li nram no:
1. Cov hnab ntim khoom noj ua los ntawm cov khoom siv zoo rau ib puag ncig.
2. Yuav kom txo tau cov nqi thiab txuag tau cov peev txheej, cov hnab ntim khoom noj tau dhau los ua nyias dua.
3. Cov hnab ntim khoom noj khoom haus tab tom tsim kho raws li cov haujlwm tshwj xeeb. Cov ntaub ntawv sib xyaw ua ke uas muaj kev thaiv siab yuav txuas ntxiv mus ua kom muaj peev xwm ua lag luam ntau ntxiv. Yav tom ntej, cov yeeb yaj kiab uas muaj kev thaiv siab nrog qhov zoo ntawm kev ua yooj yim, kev ua haujlwm ntawm cov pa oxygen thiab dej pa, thiab lub neej txee zoo dua yuav dhau los ua cov khoom siv ntim khoom noj khoom haus yooj ywm hauv cov khw muag khoom loj yav tom ntej.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-26-2022
