Raws li kev txheeb cais, tam sim no, cov khoom pov tseg yas txhua xyoo hauv ntiaj teb yog 15 lab tons. Tuam Tshoj cov yas khib nyiab txhua xyoo yog ntau tshaj 1 lab tons. Qhov kev faib ua feem ntawm cov khoom pov tseg hauv cov khib nyiab yog 40 feem pua. Kev faus rau hauv av yuav ua rau muaj kev ntxhov siab ntau ntxiv rau thaj av arable uas twb tsis muaj. Tag nrho lub ntiaj teb tab tom ntsib teeb meem tib yam niaj hnub no, yog li kev lag luam zeem muag ntawm biodegradable hnab yas khoom tsis yog tsuas yog rau Tuam Tshoj xwb, tab sis kev lag luam yog dav heev uas nws npog yuav luag txhua lub ces kaum ntawm lub ntiaj teb.
Degradable plastics hais txog ib chav kawm ntawm cov yas uas muaj ntau yam khoom muaj peev xwm ua tau raws li cov kev xav tau ntawm kev siv, nyob twj ywm tsis hloov thaum lub txee lub neej, thiab tuaj yeem degraded rau hauv ib puag ncig yam tsis muaj teeb meem nyob rau hauv tej yam ntuj tso tom qab siv. Yog li ntawd, nws tseem hu ua environmentally degradable yas. Tam sim no muaj ntau yam tshiab plastics: photodegradable plastics, biodegradable plastics, light, oxidative/biodegradable plastics, carbon dioxide-based biodegradable plastics, thermoplastic starch resin degradable plastics.
Cov khoom siv hluavtaws polymer tau siv dav hauv ntau yam. Txawm li cas los xij, cov pov tseg yas siv tau dhau los ua kev phom sij rau pej xeem ib puag ncig thiab tib neeg. Qee lub tebchaws tsim kho tau ua tiav cov kev cai uas txwv lossis txwv tsis pub siv cov yas uas tsis yog degradable rau qee lub sijhawm thiab yuav tsum tau siv cov yas degradable. Txog rau qhov kawg no, tsoomfwv thiab kev lag luam plastics hauv ntau lub tebchaws tau txuas ntxiv qhov tseem ceeb rau kev tshawb fawb thiab kev tsim cov yas degradable thaum tsim cov kev ntsuas zoo los daws thiab rov ua cov khoom pov tseg pov tseg. kub qhov chaw.
Cov hnab yas degradable tau maj mam dhau los ua kev txhim kho. Kev nce nqi ntawm cov hnab yas yuav ua rau qee tus neeg siv cov hnab ntim khoom rau kev yuav khoom. Los ntawm qhov no, nws muaj txiaj ntsig zoo rau kev tiv thaiv ib puag ncig. Nyob rau hauv 3-5 xyoo tom ntej, nws yuav ceev nrooj tuav lub lag luam thiab ua ib qho kev hloov rau cov khoom yas zoo tib yam. Raws li kev lag luam kev kwv yees, lub ntiaj teb ntim kev lag luam xav tau rau cov yas degradable yuav ncav cuag 9.45 lab tons hauv 2023, nrog rau qhov nruab nrab txhua xyoo kev loj hlob ntawm 33 feem pua. Nws tuaj yeem hais tias txoj kev loj hlob muaj peev xwm ntawm cov khoom lag luam uas degradable yas ntim khoom yog loj.