Xaiv cov ntim khoom, dab tsi ua rau muaj kev nkag siab: Bio-based? Recyclable? Biodegradable? Compostable?

Kev ruaj khov ntawm cov khoom ntim khoom uas yoog tau yooj yim yog ib qho teeb meem kub ntxhov, thiab nrog rau kev siv thev naus laus zis sai sai no, cov kev xaiv tau pib loj hlob tuaj. Txawm hais li ntawd los, tseem muaj qhov sib txawv ntawm qhov xav tau thiab qhov tseeb rau cov tswv lag luam thiab cov neeg siv khoom.

Cov yas pov tseg yog ib qho teeb meem thoob ntiaj teb thiab yog ib qho kev txhawj xeeb raug cai. Nov yog qee qhov tseeb txaus ntshai:

• Muaj ze li ntawm 400 lab tons ntawm cov yas tsim tawm thoob ntiaj teb txhua xyoo.
• 79% ntawm tag nrho cov yas uas tau tsim tawm tau xaus rau hauv cov chaw pov tseg lossis ua cov khib nyiab hauv ib puag ncig ntuj.
• Tsuas yog 9% ntawm cov yas pov tseg thoob ntiaj teb hauv rau xyoo dhau los tau rov ua dua tshiab.

Tsis muaj leej twg yuav sib cav tau tias yuav tsum tau ua ib yam dab tsi, tab sis peb yuav tsum pib qhov twg thiab ua tam sim no. Yog li ntawd, dab tsi yog cov kev hloov pauv tau ntim cov kev xaiv khoom siv?

Cov tshuab hlwb hlau

Lo lus no hais txog cov yas uas yog bio-based, biodegradable, lossis qee zaum ob qho tib si. Cov khoom siv los tsim cov yas bioplastics tsis yog fossil-based. Lawv yog tsim los ntawm cov khoom siv rov ua dua tshiab los ntawm biomass, feem ntau yog cellulose lossis cov qia los ntawm pob kws lossis kab tsib, piv txwv li.

Txawm hais tias kev tsim cov yas bioplastics tab tom loj hlob, nws tsuas yog suav txog .005% ntawm tag nrho cov yas thoob ntiaj teb hauv xyoo 2020. Cov kev kwv yees kev loj hlob yav tom ntej yog qhov tsawg heev thiab yuav tsis yog qhov hloov pauv sai sai no.

Biodegradable

Cov yas uas lwj tau los ua cov khoom siv fossil lossis biomass feedstocks. Lawv tau tsim los kom lwj hauv qee qhov chaw ib puag ncig thaum lawv kov cov kab mob lossis cov kab mob me me. Thaum lawv lwj, cov khoom seem yog dej, biomass, CO2, lossis methane nyob ntawm seb muaj xwm txheej dab tsi.

Cov yas uas raug sau tias yog biodegradable yog qhov tsis meej vim nws tsis qhia lub sijhawm lossis ib puag ncig kom lwj.

Nyob rau hauv ib qho zoo, kev tsim kho tshiab hauv cov khoom siv biodegradable, txhawb nqa los ntawm ASTM kev sim, tau ua rau lub sijhawm degradation sai dua thiab kwv yees tau ntau dua rau cov yas kom tawg tag nrho hauv cov chaw pov tseg. Muaj qhov zoo rau cov yas biodegradable uas yog fossil piv rau cov yas bio-based thiab lwm yam kev xaiv ntim khoom ruaj khov, suav nrog:

• Tus nqi tag nrho qis dua li cov khoom uas ua tau compostable lossis recyclable.
• Cov kev xaiv no ua tau raws li cov neeg siv khoom qhov chaw uas lawv nyob niaj hnub no nrog kev tswj cov khib nyiab ntim khoom.
• Cov khoom siv biogas ntawm cov chaw pov tseg yog lub zog rov ua dua tshiab uas siv niaj hnub no.

Thim tau

Cov ntim khoom uas lwj tau yog ib feem ntawm cov khoom uas lwj tau. Yog tias ua tau raws li qhov yuav tsum tau ua, cov kab mob me me kuj yuav lwj ua CO2, dej, thiab biomass. Yuav kom paub tias lwj tau, 90% ntawm cov yas yuav tsum lwj ua tej daim me me uas me dua 2 hli hauv 12 lub lis piam.

Muaj ntau yam teeb meem thaum siv cov yas ntim khoom uas lwj tau. Qhov loj tshaj plaws uas yuav tsum kov yeej yog:

• Cov yas uas lwj tau hauv tsev nyuaj heev rau ua, ua tiav, thiab kim heev.
• Muaj ob peb lossis tsis muaj cov kev xaiv ntim khoom uas ua tau hauv tsev uas tau lees paub los ntawm cov koom haum pov thawj nrog cov thawj coj ua lag luam.
• Muaj ob peb lub chaw ua composting lag luam uas lees txais cov ntaub ntawv ntim khoom hauv Tebchaws Meskas, thiab cov khoom ntim khoom compostable tsis ua haujlwm hauv cov chaw pov tseg khib nyiab.

Recyclable

Muaj kev txaus siab thiab kev siv cov yas ntim khoom hauv khw (SDO), lossis Recycle Ready, tau nce ntxiv. Lub nra hnyav yog rau cov neeg siv khoom kawg los ntxuav thiab ntxuav cov yas ntim khoom noj thiab tom qab ntawd muab tso rau ntawm ib qho ntawm ntau dua 32,000 qhov chaw khaws khoom thoob plaws Tebchaws Meskas.

Cov khoom siv tsuas yog siv rau cov ntim khoom PE uas siv tshuab rov ua dua tshiab feem ntau yog rau cov ntoo ua los ntawm cov khoom siv lossis cov hnab yuav khoom.

Yav tom ntej rau kev siv cov yas ntim khoom rov qab yog mus rau kev siv tshuaj lom neeg rov qab. Cov thev naus laus zis tshiab no, kaw-voj voog yuav siv cov ntaub ntawv ntim khoom ntau txheej thiab tso cai rau cov neeg ua haujlwm rhuav tshem lawv mus rau hauv cov saw hlau polymer qub. Los ntawm qhov ntawd cov tshuaj sib cais raug ua rov qab mus rau hauv cov roj hmab zoo nkauj kom siv dua.

Qhov kev daws teeb meem zoo tshaj plaws rau hnub no yog dab tsi?

Tsis muaj ib txoj kev zoo tag nrho tab sis peb yuav tsum pib qhov twg, thiab muaj qee txoj kev xaiv zoo. Cov kev xaiv ntim khoom rov ua dua tshiab thiab cov kev xaiv ntim khoom uas lwj tau hauv qhov chaw pov tseg tau npaj txhij lawm. Tus nqi siv ob qho tib si yuav siab dua li cov khoom siv txheem, tab sis qhov txiaj ntsig ntawm tus nqi thiab qhov txiaj ntsig ntawm qhov chaw pov tseg yog lwj tau hauv qhov chaw pov tseg. Nov yog vim li cas:

• Keeb kwm tau qhia tias 79% ntawm cov yas ua txhua xyoo mus rau qhov chaw pov tseg thiab tsuas yog 9% rov ua dua tshiab.
• Cov yas uas lwj tau uas pov tseg lawm no yuav muaj cov roj biogas uas rov ua dua tshiab tau uas ntau txhiab lub chaw pov tseg thoob plaws Tebchaws Meskas niaj hnub no tab tom raug khawb thiab siv. Cov ntaub ntawv muaj nyob ntawm no:https://www.epa.gov/lmop/landfill-gas-energy-project-data
• Koj muaj peev xwm xa ob qho kev xaiv rau cov neeg siv khoom los ntawm kev siv cov qauv PE/PE uas lwj tau. Cov khoom siv bioadditive tsis muaj kev cuam tshuam tsis zoo rau cov txheej txheem ntawm cov khoom siv rov ua dua tshiab.