"Kuv chim siab rau kev rov ua dua tshiab vim kuv txhawj xeeb txog cov tiam tom ntej thiab qhov twg tag nrho cov khib nyiab peb tsim tawm mus. Nws yuav tsum nres. Kuv ntxuav kuv cov thawv yas thiab rov siv lub hnab ntawv, txhua yam kuv ua tau. " (Cherie Lunghi)

Peb coob tus ntseeg hauv kev rov ua dua tshiab thiab xyaum nws txhua hnub ib yam li tus ua yeeb yam Cherie Lunghi. Cov yas rov ua dua tshiab yog qhov tseem ceeb hauv kev ua kom paub tseeb tias cov peev txheej ntuj raug xa rov qab mus rau qhov xwm txheej kom ntseeg tau lawv txoj kev ruaj khov. Yas yuav tsum yog cov khoom lag luam zoo ntawm lub xyoo pua 20th, tab sis cov pov tseg uas tsim los ntawm nws yog qhov txaus ntshai. Yog li ntawd, nws tau dhau los ua qhov tseem ceeb uas peb  rov ua dua tag nrho cov pov tseg yas.

Duab Credit:  BareekSudan

Plastic Recycling yog dab tsi?

Plastic recycling  yog cov txheej txheem ntawm kev rov ua kom cov khoom sib txawv ntawm cov yas kom rov ua dua tshiab rau hauv ntau yam khoom, tsis zoo li lawv daim ntawv qub. Ib yam khoom uas ua los ntawm cov yas yog recycled rau hauv ib yam khoom sib txawv, uas feem ntau tsis tuaj yeem siv dua.

Cov theem hauv Plastic Recycling

Ua ntej cov khoom pov tseg yas rov qab siv dua, nws yuav tsum mus dhau tsib theem sib txawv kom nws tuaj yeem siv ntxiv rau kev ua ntau hom khoom.

1. Sorting: Kuv t yog qhov tsim nyog uas txhua yam khoom yas raug cais raws li nws cov khoom thiab hom kom nws tuaj yeem ua tiav raws li hauv lub tshuab shredding.
2. Ntxuav:  Thaum cov sorting tau ua tiav, cov khib nyiab yas yuav tsum tau ntxuav kom zoo kom tshem tawm cov impurities xws li cov ntawv lo thiab cov nplaum. Qhov no txhim kho qhov zoo ntawm cov khoom tiav.
3. Shredding:  Tom qab ntxuav, cov khib nyiab yas ntim rau hauv cov khoom siv sib txawv uas khiav cov khib nyiab los ntawm cov khoom sib txawv. Cov shredders rhuav tshem cov yas rau hauv cov pellets me me, npaj lawv rov ua dua rau lwm yam khoom.
4. Kev txheeb xyuas thiab kev faib cov yas:  Tom qab shredding, ib qho kev ntsuam xyuas kom zoo ntawm cov yas pellets yog ua kom paub tseeb tias lawv qhov zoo thiab cov chav kawm.
5. Extruding:  Qhov no suav nrog yaj cov yas shredded kom nws tuaj yeem raug extruded rau hauv pellets, uas yog siv los ua ntau hom khoom yas.

Cov txheej txheem ntawm cov yas rov ua dua tshiab

Ntawm ntau cov txheej txheem ntawm kev rov ua dua cov pov tseg yas, ob qho hauv qab no yog qhov nrov tshaj plaws hauv kev lag luam.

• Thaum tshav kub kub Compression:  Hom yas  rov ua dua tshiab no tau txais kev thov tshwj xeeb  hauv Tebchaws Meskas, Australia, thiab Nyij Pooj vim nws muaj peev xwm rov ua dua txhua hom yas ib zaug. Nws yuav siv cov khib nyiab tsis huv thiab ntxuav thiab sib tov rau hauv cov tumblers loj uas churn tag nrho cov sib tov. Qhov zoo dua ntawm cov txheej txheem no yog tias nws tsis tas yuav tsum muaj cov ntaub ntawv sib txuam ntawm cov yas kom rov ua dua ua ke.

• Monomer:  Los ntawm cov txheej txheem rov ua dua tshiab thiab raug monomer, cov teeb meem loj ntawm kev rov ua dua tshiab tuaj yeem kov yeej. Cov txheej txheem no yeej thim rov qab cov tshuaj tiv thaiv polymerization txhawm rau rov ua dua tib hom condensed polymer. Cov txheej txheem no tsis yog tsuas yog ntxuav xwb tab sis kuj ntxuav cov khib nyiab yas los tsim cov polymer tshiab.

Cov txiaj ntsig ntawm Kev Siv Khoom Siv Yas

Tom qab paub txog cov txheej txheem thiab theem ntawm cov yas rov ua dua tshiab, nws tseem ceeb heev kom paub txog nws cov txiaj ntsig ntau yam. Ob peb ntawm lawv yog:

• Muaj Ib Tuj Yas:  Ib qho laj thawj loj tshaj plaws rau kev rov ua dua cov yas yog nws cov khoom loj. Nws tau raug pom tias 90% ntawm cov pov tseg uas tau sau los ntawm lub tuam txhab hauv nroog yog cov pov tseg yas. Tsis tas li ntawd, cov yas yog siv los tsim ntau yam khoom thiab cov khoom siv niaj hnub. Qhov no yuav tsis tsuas yog pab txhawb kev tsim cov yas, tab sis kuj tseem yuav saib xyuas ib puag ncig.

• Kev txuag hluav taws xob thiab cov khoom siv ntuj tsim:  Kev rov ua dua tshiab ntawm cov yas pab txuag ntau lub zog thiab cov khoom siv ntuj tsim vim cov no yog cov khoom xyaw tseem ceeb uas yuav tsum tau ua rau cov yas yas. Txuag roj av, dej, thiab lwm yam khoom siv ntuj pab txuag qhov sib npaug ntawm qhov xwm txheej.

• Clears Landfill Space:  Cov khib nyiab pov tseg hauv av uas yuav tsum tau siv rau lwm lub hom phiaj. Tib txoj kev uas cov pov tseg yas no tuaj yeem raug tshem tawm ntawm cov chaw no yog los ntawm kev rov ua dua tshiab. Tsis tas li ntawd, ntau yam kev sim tau ua pov thawj tias thaum lwm cov khoom pov tseg pov rau hauv tib yam li cov khib nyiab yas, nws decomposes sai dua thiab tawm cov pa phem phem tom qab qee lub sijhawm. Cov pa taws no muaj kev phom sij heev rau thaj tsam ib puag ncig vim lawv tuaj yeem ua rau ntau hom kab mob ntsws thiab tawv nqaij.

Plastic recycling  tsis tsuas yog txhawb nqa kev siv cov khoom pov tseg yas kom zoo nkaus xwb tab sis kuj pab txuag ib puag ncig, ua kom huv thiab ntsuab.

• [cf7ic]