Kev coj ua ntawm kev sau ntau thiab rov ua dua ntawm cov khoom siv hluav taws xob hauv tsev tau dhau los ua ib qho chaw nyob hauv cov tebchaws uas muaj kev ua neej nyob siab, vim nws muaj qhov kev saib xyuas ntau tau them rau lub xeev ntawm ib puag ncig thiab kev ua haujlwm zoo siv thaj chaw. Tom qab tag nrho, qhov chaw uas nyob rau hauv ntau lub teb chaws ntawm lub ntiaj teb no yog faib rau landfills ntawm tsev neeg pov tseg yuav rationally toj roob hauv pes, thiab tsis accumulate decomposing khib nyiab nyob rau hauv.
Ib qhov chaw tseem ceeb hauv kev rov ua dua tshiab yog kev pov tseg cov tub yees qub, vim tias lawv cov tshuab tau ntim nrog cov tub yees. Nws yog ib yam khoom uas zoo hloov cua sov los ntawm ib qho mus rau lwm qhov. Txawm li cas los xij, nws tso tawm rau hauv huab cua ua rau muaj kev puas tsuaj loj rau ib puag ncig thiab tib neeg. Tam sim no muaj peb yam tseem ceeb ntawm cov tub yees: chlorofluorocarbons (CFCs), hydrochlorofluorocarbons (HCFCs), thiab hydrofluorocarbons (HFCs).
Cov tshuaj chlorine hauv cov khoom xyaw thawj zaug ua rau nws txaus ntshai tshaj plaws rau ib puag ncig. Qhov no yog vim hais tias hom refrigerant yog txausruaj khov thiab tsis zoo decomposed thaum tso rau hauv qhov chaw. Yog li, cov khoom no accumulates, uas, nyob rau hauv lem, ua rau kev puas tsuaj ntawm ozone txheej, ib tug nce nyob rau hauv lub tsev cog khoom nyhuv thiab lwm yam tsis kaj siab thiab tsis kaj siab tshwm sim.
Pab pawg thib ob muaj hydrogen atoms, uas ua rau muaj kev puas tsuaj sai ntawm cov freons, thiab tseem tiv thaiv lawv cov tsub zuj zuj hauv ib puag ncig.
Pab pawg thib peb tsis muaj tshuaj chlorine kiag li. Qhov no txhais tau tias lawv muaj kev nyab xeeb dua thiab lwm yam kev hloov pauv rau CFCs thiab HCFCs.
Pov tseg lub tub yees cuam tshuam nrog nws txoj kev sib cais rau hauv cov khoom, uas tau xa mus rau kev rov ua dua lossis rhuav tshem txoj hauv kev zoo tshaj plaws. Cov kauj ruam tseem ceeb tshaj plaws ntawm kev rov ua dua tshiab yog kev rov qab los ntawm cov tub yees tau piav qhia ua ntej. Tom qab tag nrho, nws yog tus uas ua rau muaj kev phom sij rau ib puag ncig.
Rov ua dua lub tub yees tuaj yeem ua tau ntau txoj hauv kev. Cia peb saib ib leeg.
1. Kev ua tus kheej. Nws tsis yog kev puas tsuaj tag ntawm chav tsev uas tau ua haujlwm rau nws lub hom phiaj. Hom no tuaj yeem suav hais tias yog theem npaj, uas yooj yim rau kev ua haujlwm ntawm cov ntsiab lus rov ua dua.
2. Them tshem tawm thiab pov tseg ntawm lub tub yees. Yog tias koj tsis xav ua haujlwm qias neeg, koj tuaj yeem caw ib tus neeg sawv cev ntawm tuam txhab uas, rau qee qhov nyiaj, yuav tshem koj lub tsev ntawm chav qub.
3. Pub dawb rov siv duatub yees. Yog tias koj xav tau, koj tuaj yeem nrhiav lub tuam txhab uas yuav ua tiav tag nrho cov txheej txheem dawb. Feem ntau qhov no yog ua los ntawm cov tuam txhab loj ntawm cov khoom siv tub yees. Piv txwv li, thaum yuav ib lub cuab yeej tshiab, feem ntau muaj luv nqi los ntawm kev xa rov qab tus qub. Lossis, tej zaum yuav muaj kev tshaj tawm hauv koj lub tebchaws, nrog rau kev koom tes uas, thaum yuav lub tsev tshiab, lub tub yees qub yuav raug muab pov tseg dawb xwb.
