Qhov cuam tshuam ntawm cov khoom ntim khoom ntawm ib puag ncig thiab cov peev txheej
Cov ntaub ntawv yog lub hauv paus thiab forerunner ntawm lub teb chaws economic thiab kev loj hlob ntawm kev sib raug zoo. Nyob rau hauv cov txheej txheem ntawm cov khoom sau, extraction, npaj, ntau lawm, ua, thauj, siv thiab pov tseg, ntawm ib sab, nws txhawb kev sib raug zoo thiab kev lag luam kev loj hlob thiab kev vam meej ntawm tib neeg kev vam meej, ntawm qhov tod tes. Nws kuj tseem siv ntau lub zog thiab cov peev txheej, thiab tso tawm ntau cov pa khib nyiab, dej khib nyiab thiab cov khib nyiab pov tseg, ua rau muaj kuab paug nyob ib puag ncig ntawm tib neeg. Ntau yam kev txheeb cais qhia tau hais tias, los ntawm kev txheeb xyuas cov txheeb ze ntawm lub zog thiab kev siv cov peev txheej thiab lub hauv paus ua rau muaj kuab paug ib puag ncig, cov ntaub ntawv thiab lawv cov kev tsim khoom yog ib lub luag haujlwm tseem ceeb uas ua rau lub zog tsis txaus, kev siv ntau dhau thiab txawm tias depletion. Nrog rau kev vam meej ntawm cov khoom muag thiab kev nce siab ntawm kev lag luam ntim khoom, cov khoom ntim khoom kuj tseem ntsib teeb meem tib yam. Raws li kev txheeb cais tsis tiav, tam sim no ib tus neeg noj cov khoom ntim hauv ntiaj teb yog 145kg ib xyoos. Ntawm 600 lab tons ntawm cov kua thiab cov khib nyiab tsim tawm hauv ntiaj teb txhua xyoo, ntim cov khib nyiab yog kwv yees li 16 lab tons, suav txog 25% ntawm qhov ntim ntawm tag nrho cov khib nyiab hauv nroog. 15% ntawm qhov hnyav. Nws pom tau tias tus lej zoo li no yuav ua rau muaj kev ua qias tuaj ib puag ncig thiab pov tseg ntawm cov peev txheej hauv lub sijhawm ntev. Tshwj xeeb, "dawb paug" tshwm sim los ntawm cov khoom ntim yas uas tsis tuaj yeem degraded rau 200 txog 400 xyoo yog qhov pom tseeb thiab txhawj xeeb.
Chocolate thawv
Qhov cuam tshuam ntawm cov khoom ntim khoom ntawm ib puag ncig thiab cov peev txheej tau cuam tshuam txog peb yam.
(1) Kev ua qias tuaj los ntawm kev tsim cov khoom ntim khoom
Hauv kev tsim cov ntaub ntawv ntim khoom, qee cov khoom siv raw tau ua tiav los ua cov ntaub ntawv ntim, thiab qee cov khoom siv raw ua kuab paug thiab tawm mus rau ib puag ncig. Piv txwv li, cov pa paug pov tseg, cov dej khib nyiab, cov khoom pov tseg thiab cov khoom tsis zoo, nrog rau cov khoom siv uas tsis tuaj yeem rov ua dua tshiab, ua rau muaj kev puas tsuaj rau ib puag ncig ib puag ncig.
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(2) Qhov tsis yog ntsuab ntawm cov khoom ntim nws tus kheej ua rau muaj kuab paug
Cov ntaub ntawv ntim khoom (nrog rau cov khoom siv ntxiv) tuaj yeem ua paug rau cov ntsiab lus lossis ib puag ncig vim muaj kev hloov pauv hauv lawv cov khoom siv tshuaj. Piv txwv li, polyvinyl chloride (PVC) tsis zoo thermal stability. Ntawm qhov kub thiab txias (kwv yees li 14 ° C), hydrogen thiab tshuaj lom chlorine yuav decomposed, uas yuav ua paug cov ntsiab lus (ntau lub teb chaws txwv tsis pub PVC ua zaub mov ntim). Thaum hlawv, hydrogen chloride (HCI) yog tsim, ua rau acid los nag. Yog hais tias cov nplaum uas siv rau ntim yog hnyav-raws li, nws kuj yuav ua rau muaj kuab paug vim nws toxicity. Cov tshuaj chlorofluorocarbon (CFC) siv nyob rau hauv kev lag luam ntim khoom raws li foaming agents los tsim ntau yam ua npuas ncauj yas yog lub ntsiab culprits nyob rau hauv rhuav tshem cov huab cua ozone txheej nyob rau hauv lub ntiaj teb no, coj loj loj kev puas tsuaj rau tib neeg beings.
Macaron lub thawv
(3) Cov khoom ntim khoom pov tseg ua rau muaj kuab paug
Kev ntim khoom feem ntau yog siv ib zaug, thiab kwv yees li 80% ntawm cov khoom ntim ntau dhau los ua ntim cov khib nyiab. Los ntawm kev xav thoob ntiaj teb, cov khoom pov tseg tsim los ntawm ntim cov khib nyiab suav txog li 1/3 ntawm qhov zoo ntawm cov khoom pov tseg hauv nroog. Cov ntaub ntawv ntim khoom sib xws ua rau cov khoom siv pov tseg loj, thiab ntau cov ntaub ntawv tsis-degradable lossis tsis rov ua dua tshiab yog qhov tseem ceeb tshaj plaws thiab tseem ceeb ntawm kev ua qias tuaj ib puag ncig, tshwj xeeb tshaj yog cov khoom siv pov tseg ua npuas ncauj thiab cov yas pov tseg. Cov "dawb paug" tsim los ntawm cov hnab yuav khoom yog cov pa phem tshaj plaws rau ib puag ncig.
Macaron lub thawv
Post lub sij hawm: Nov-14-2022