Puas yog 90 feem pua ​​​​ntawm cov ntaub so ntub dej muaj cov yas?

Cov ntaub ntub dej yog cov khoom siv nrov thiab yooj yim siv los ntxuav thiab ua kom rov zoo dua. Txawm li cas los xij, tau muaj kev txhawj xeeb ntau ntxiv txog seb lawv puas muaj cov yas, uas tuaj yeem cuam tshuam tsis zoo rau ib puag ncig.
Ntau qhov kev tshawb fawb tau ua tiav ntawm cov ntaub so ntswg ntub dej thiab seb lawv puas muaj cov yas. Raws li kev tshawb fawb luam tawm nyob rau hauv phau ntawv journal Environmental Science & Technology hauv 2018, nyob ib ncig ntawm 90 feem pua ​​​​ntawm cov ntaub so ntub dej kuaj muaj cov yas fibers. Cov yas fibers tau pom tias yog ua los ntawm cov ntaub ntawv xws li nylon thiab polyester, uas tsis biodegrade yooj yim.
Yog vim li cas rau qhov ntau ntawm cov yas fibers hauv cov ntaub ntub dej yog vim cov ntaub ntawv siv los ua lawv. Ntau cov ntaub ntub dej yog tsim los ntawm kev sib xyaw ntawm ntuj thiab hluavtaws fibers, nrog rau cov ntaub ntawv xws li polyester thiab polypropylene. Cov ntaub ntawv no tsis yog biodegradable thiab tuaj yeem siv ntau pua xyoo los rhuav tshem hauv ib puag ncig.
Qhov cuam tshuam ntawm cov ntaub ntub dej ntawm ib puag ncig yog qhov tseem ceeb. Cov fibers yas los ntawm cov ntaub ntub dej nkag mus rau hauv txoj kev hauv dej thiab tuaj yeem noj tau los ntawm cov dej hiav txwv, ua rau muaj teeb meem kev noj qab haus huv thiab kev tuag. Tsis tas li ntawd, cov ntaub so ntub dej uas xaus rau hauv qhov chaw pov tseg tuaj yeem siv sijhawm ntau xyoo los rhuav tshem thiab ua rau muaj kuab paug yas.
Nrog rau kev loj hlob ntawm kev paub txog kev cuam tshuam ntawm cov yas rau ib puag ncig, tau muaj kev thawb rau cov tuam txhab los tsim cov kev hloov hauv ib puag ncig zoo dua rau cov ntaub so ntub dej. Qee lub tuam txhab tau pib tsim cov ntaub ntub dej ua los ntawm cov ntaub ntawv biodegradable, xws li xyoob, uas tuaj yeem decompose hauv ob peb lub hlis xwb. Tsis tas li ntawd, qee cov tuam ntxhab tau pib tsim cov ntaub ntub dej "flushable" uas tawg yooj yim dua hauv dej.
Cov neeg siv khoom kuj tuaj yeem ua cov kauj ruam los txo qhov cuam tshuam ntawm cov ntaub so ntub dej ntawm ib puag ncig. Ib qho kev xaiv yog hloov mus rau cov ntaub siv rov siv tau lossis cov phuam so kom huv thiab rov ua dua tshiab, uas yog kev lag luam ntau dua thiab ib puag ncig zoo rau lub sijhawm ntev. Rau cov neeg uas tseem nyiam siv cov ntaub so ntub dej, nws yog ib qho tseem ceeb uas yuav tsum muab pov tseg kom zoo thiab tsis txhob muab tso rau hauv chav dej.
Hauv kev xaus, feem ntau ntawm cov ntaub ntub dej ntawm lub khw muaj cov yas fibers, uas muaj kev cuam tshuam tsis zoo rau ib puag ncig. Cov kev daws teeb meem xws li cov ntaub ntawv biodegradable thiab cov khoom siv rov qab siv tau muaj, thiab nws yog ib qho tseem ceeb rau cov tuam txhab thiab cov neeg siv khoom zoo ib yam los ua cov kauj ruam mus rau yav tom ntej.