Los ntawm kev txheeb xyuas ntawm kev txhim kho qhov pom ntawm PVC kev lag luam, tam sim no, muaj peev xwm ua ntau lawm PVC nyob rau hauv 21 xeev, lub nroog thiab thaj chaw ntawm thaj chaw hauv Suav teb, thiab qhov kev faib tawm yog qhov sib txawv. Nrog rau kev nce ntxiv ntawm cov khoom siv sab hauv sab kev hloov kho thiab kev tiv thaiv ib puag ncig, tiv thaiv cov txheej txheem PVC (calcium carbide) cov lag luam nyob rau sab qaum teb sab hnub poob Suav teb muaj txiaj ntsig zoo dua tus nqi thiab yuav ua kom muaj kev sib koom ua ke thiab kev ua haujlwm thiab cov peev txheej tsim kho ntxiv rau yav tom ntej. Cov tuam txhab lag luam loj tau nqis peev ntau dua li kev tiv thaiv ib puag ncig. Calcium carbide slag, pov tseg desulphurization slag thiab lwm cov pov tseg yuav tsim nyob rau hauv PVC ntau lawm los ntawm calcium carbide txoj kev. Cov lag luam loj muaj peev txheej thiab thev naus laus zis zoo, thiab kev nqis peev hauv kev tiv thaiv ib puag ncig tau dhau los ua lub hauv paus rau kev nyab xeeb thiab ruaj khov rau kev lag luam.
Piv nrog rau kev ua lag luam PVC domestic thiab export thiab ntim ntau ntxiv, cov ntim tag nrho yog tsawg heev, suav txheeb rau qhov tsis zoo. Nyob rau tib lub sijhawm, txij xyoo 2009 txog 2016, PVC ntshuam thiab txawv teb ntim nthuav tawm kev hloov pauv, lub ntim ntim khoom xa tuaj txo qis, thiab cov ntawv ntim khoom xa tuaj nthuav dav zuj zus, tab sis feem ntawm cov khoom ntim tawm hauv cov zis tseem qis, thiab qhov thov ntawm PVC yog feem ntau hauv Suav teb. Nrog rau kev koom tes ntawm ntau thiab ntau lub teb chaws nyob rau hauv "Ib Siv Thiab Ib Txoj Kev" teg haujlwm, teeb lub hauv paus rau kev xa tawm ntawm kev tsim khoom hauv tsev muaj txiaj ntsig zoo, tseem muaj chaw rau kev xa tawm ntim ntawm PVC yav tom ntej, thiab txawv teb chaws kev ua lag luam yuav tsum tau nthuav dav. Saum toj no yog kev txhim kho kev cia siab ntawm PVC kev lag luam txhua cov ntsiab lus tshuaj ntsuam.
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