Nws paub zoo tias cov khoom siv yas tuaj yeem rov ua dua tshiab. Txawm li cas los xij, cov txheej txheem ntawm cov yas rov ua dua tshiab tsis yooj yim li ntau tus neeg xav. Ntawm ib sab, qhov nyuaj ntawm kev rov ua dua nws txawv nrog ntau hom yas. Yog tias tsis muaj cov khoom siv rov ua dua tshiab thiab thev naus laus zis, ntau qhov chaw tsuas tuaj yeem siv cov yas xws li lub raj mis dej ntxhia thiab cov dej ntim hauv lub thawv, thaum cov khoom siv yas siv hauv cov khoom xws li yogurt khob, yas cutlery, thiab kas fes pods yuav kawg incinerated los yog landfilled vim "tsis muaj recycling. muaj peev xwm." Ntawm qhov tod tes, cov txheej txheem cua sov ua kom luv luv ntawm cov saw hlau polymer, yog li txo qhov zoo ntawm cov yas. Yog li ntawd, txawm tias lub raj mis dej yas tuaj yeem siv tau zoo, nws tsis tuaj yeem tsuas yog "reborn" ua lwm lub raj mis yas. Feem ntau ntawm cov khoom yas yuav "downcycled," los ua cov khoom lag luam qis dua li lawv daim ntawv qub.
Tam sim no, raws li ASTM International's D7611 tus qauv (cov ntaub ntawv qhia tus lej rau cov khoom yas), cov yas tuaj yeem muab faib ua xya hom.
1 # Polyethylene Terephthalate (PET lossis PETE)
Polyethylene terephthalate (PET) yog ntau hom thermoplastic polyester thiab yog ib qho ntawm cov khoom siv yooj yim tshaj plaws los siv dua. Nws feem ntau yog siv rau pob tshab lub raj mis dej haus thiab ntim khoom noj. Vim nws cov qauv ntxeem tau, cov yas no tuaj yeem nqus cov kab mob nyob rau lub sijhawm, vim li ntawd nws tsis pom zoo kom rov siv dua, tshwj xeeb tshaj yog rau tuav dej haus.
PET rov qab yog feem ntau ua rau hauv hnab tote, rooj tog, ntaub pua plag, panels, fibers, lossis flocking, thiab tuaj yeem tiv taus 2 mus rau 3 cov txheej txheem rov ua dua. Txawm li cas los xij, nws tseem ceeb heev uas yuav tsum nco ntsoov tias txawm tias cov khoom tsim los ntawm cov khoom siv PET tuaj yeem rov ua dua tshiab yog nyob ntawm tag nrho cov peev txheej ntawm kev lag luam uas lawv nyob hauv. Piv txwv li, txij li kev lag luam textile muaj peev xwm rov ua dua ntawm qhov loj tsis siab, ib zaug rov ua dua tshiab. PET yog hloov mus rau hauv polyester fibers, nws yuav tsis muaj sij hawm los mus rau ib tug thib ob recycling voj voog thiab tej zaum yuav hloov incinerated.
2 # High density polyethylene (HDPE)
High-density polyethylene (HDPE) feem ntau yog opaque, thiab vim nws qhov kev pheej hmoo qis dua, nws suav hais tias yog ib qho ntawm peb hom yas zoo tshaj plaws. Nws yog feem ntau siv rau hauv cov khoom xws li mis nyuj, tshuaj ntxuav, kua txiv fwj, thiab tshuaj zawv plaub hau. Hais txog kev rov ua dua tshiab, HDPE piv rau PETE, thiab ob qho tib si yooj yim rau rov ua dua. Recycled HDPE feem ntau yog siv rau hauv cov khoom xws li ballpoint cwjmem, cov kav dej, cov khoom ua si, thiab cov khoom siv ntoo-yas.
Ua tsaug rau nws cov thickness thiab durability, HDPE tuaj yeem tiv taus cov txheej txheem rov ua dua tshiab. Ib qho kev sim nyob sab Europe sim qhov rov ua dua ntawm HDPE pom tias, raws li qhov tseeb thiab tswj tau zoo, HDPE yas tuaj yeem rov ua dua mus txog 10 zaug. Txawm li cas los xij, cov xwm txheej niaj hnub niaj hnub no tseem tsis tau mus txog qib no.
3 # Polyvinyl chloride (PVC)
Polyvinyl chloride (PVC) feem ntau pom muaj nyob rau hauv cov khoom xws li hluavtaws tawv, vinyl flooring, thiab kav. Hom yas no muaj Phthalates, DEHA, thiab lwm yam khoom tsis zoo uas tuaj yeem tsim kev puas tsuaj rau tib neeg kev noj qab haus huv nyob rau hauv kev sib cuag mus ntev lossis kub kub. Tsis tas li ntawd, cov yas no nyuaj dua rau kev rov ua dua piv rau PETE thiab HDPE vim tias nws muaj ntau yam sib txawv thiab cov khoom siv ntxiv, ua rau muaj kev sib tw ntawm kev puas tsuaj thiab kev ua haujlwm tseem ceeb.
Tam sim no, los ntawm qee cov txheej txheem nyuaj, qee qhov PVC tuaj yeem sib cais thiab rov ua dua tshiab rau hauv cov khoom siv PVC, xws li panels, flooring, cables, fences, carpet backing, and decking, or turn into pipes. Txawm li cas los xij, vim qhov nyuaj thiab tus nqi ntawm cov txheej txheem rov ua dua tshiab, cov khoom siv rov ua dua PVC feem ntau tau txo cov kav ntev thiab nyuaj rau kev tiv thaiv ntau cov txheej txheem rov ua dua tshiab.
4# Tsawg-density polyethylene (LDPE)
Tsawg-density polyethylene (LDPE) muaj tshuaj lom neeg ruaj khov thiab feem ntau pom muaj nyob rau hauv cov fwj thiab hnab ntim (xws li cov khoom siv rau ketchup), cov hnab ntim khoom, cov khoom txhaj tshuaj molded, cov cuab yeej kho mob, tshuaj, thiab cov khoom ntim khoom noj. Tom qab sib sau, txheeb xyuas, ntxuav, thiab tshem tawm cov impurities, LDPE cov khib nyiab tuaj yeem yaj mus rau hauv cov pellets thiab siv los tsim cov khoom tshiab xws li cov hnab khib nyiab thiab cov thoob khib nyiab, tab sis feem ntau tsuas yog rov ua dua ib zaug xwb.
LDPE tsis tshua muaj kev koom tes hauv cov txheej txheem yas rov ua dua tshiab, tab sis nrog kev txhim kho cov tswv yim kev tsim kho kom ruaj khov, tib neeg tau maj mam pom tias cov khoom siv hluav taws xob xav tau rau cov khoom siv rov ua dua tshiab LDPE tsawg dua li ntawm cov nkauj nkauj xwb, thiab tus nqi feem ntau qis dua cov nkauj xwb. LDPE, muab cov txiaj ntsig zoo ib puag ncig thiab kev lag luam. Yog li, tam sim no muaj ntau lub tuam txhab rov ua dua tshiab suav nrog LDPE hauv lawv cov khoom siv rov ua dua tshiab.
5 # Polypropylene (PP)
Polypropylene (PP) muaj qhov ua tau zoo heev thiab kev ua haujlwm yooj yim, nrog cov nqi tsim khoom tsawg thiab kev nyab xeeb siab, ua rau nws yog cov khoom siv dav dav. Nws feem ntau pom muaj nyob rau hauv cov khoom xws li lub raj mis kho mob, yogurt ntim, lub raj mis lub kaus mom, tsheb qhov chaw, thiab khaub ncaws. Vim nws cov yas muaj zog, PP tuaj yeem rov ua kom sov, zoo li, thiab txias yam tsis poob nws cov khoom, vim li ntawd nws yog ib qho ntawm cov yas uas muaj ntau lub tuam txhab kev lag luam yas rov ua dua tshiab.
Raws li cov ntaub ntawv los ntawm AZoCleantech, PP tuaj yeem rov ua dua li 4 zaug. Cov txheej txheem kev rov ua dua tshiab suav nrog kev sau thiab txheeb xyuas cov khib nyiab yas, crushing rau hauv me me, yaj nws, thiab molding rau hauv ntau yam khoom xws li yas pallets, vaj rooj tog, thawv cia, tsheb roj teeb rooj, tsheb kauj vab ncej, thiab lwm yam.
6 # Polystyrene (PS)
Polystyrene (PS) yog ib hom ua npuas ncauj yas thiab ib qho tseem ceeb ntawm "dawb paug", feem ntau siv rau hauv kev tsim cov thawv ntim khoom noj, cov thawv ntim khoom noj, cov khob yas pov tseg, thiab lwm yam. Cov khoom siv PS tsoos yog tsim los ntawm cov kua hydrocarbons, uas tsis tuaj yeem tawg los ntawm cov txheej txheem rov ua dua tshiab, thiab cov nqi ua haujlwm siab dhau lawm, yog li tus nqi rov ua dua ntawm PS yog qis dua li lwm cov yas.
Hais txog kev hais lus, ib pawg ntawm PS, nthuav dav polystyrene (EPS), muaj qhov ua tau ntau dua ntawm kev rov ua dua tshiab, tab sis feem ntau nws tuaj yeem siv dua ib zaug xwb. Cov txheej txheem rov ua dua qub suav nrog cov txheej txheem xws li cua sov densification, txias crushing, los yog txias compression rau regrind cov khoom, uas yog ces ncaj qha siv mus sib tov nrog lwm yam ntaub ntawv thiab txheej txheem rau hauv cov khoom xws li lub tsho tiv no hangers, paj lauj kaub, videotapes, rooj tog, tsev cov ntaub ntawv, los yog cov ntaub ntawv rwb thaiv tsev.
7 # lwm
Los ntawm polycarbonate (PC) siv nyob rau hauv CDs, laptop screens, thiab shatterproof windows, mus rau ABS rau lub tsheb dashboards, qhov rooj, bumpers, lub cev shells, biodegradable "yas" zoo li polylactic acid (PLA) ua los ntawm pob kws los yog qab zib, tag nrho cov yas uas. tsis koom nrog rau lwm yam poob rau hauv qeb xya.
Cov yas hauv pawg no feem ntau yog cov ntaub ntawv qib engineering, txhua tus muaj cov yam ntxwv tshwj xeeb, kev siv, thiab kev siv dua tshiab. Yog li ntawd, thaum rov ua dua cov yas no, yuav tsum tau soj ntsuam cov ntaub ntawv los ntawm cov ntaub ntawv los xyuas kom meej tias lawv siv tau zoo tshaj plaws. Piv txwv li, tom qab kev ua haujlwm rov ua dua tshiab, qee hom PC yas tuaj yeem rov siv dua rau hauv cov khoom siv, tsheb, thiab cov ntaub ntawv. PLA, ntawm qhov tod tes, tuaj yeem muab tso rau hauv qee qhov chaw, hais txog qhov teeb meem ntawm cov khoom yas tsis raug degradable ntawm qhov chaw.
Kitech Machinery, tshwj xeeb hauv kev tsim cov khib nyiab yas rov siv lub tshuab, nws muaj ntau tshaj 20 xyoo ntawm kev siv cov yas rov ua dua tshiab. Peb tau tsim cov kev daws teeb meem tshwj xeeb raws li cov yam ntxwv ntawm cov khoom pov tseg sib txawv, xws li daim ntawv lub cev, cov qauv tshuaj, thiab kev ua haujlwm nyuaj. Nrog kev tshaj lij thev naus laus zis thiab cov txheej txheem tsim kho, peb xyuas kom meej tias cov yas khib nyiab tuaj yeem siv tau zoo thiab rov siv dua. Peb tau cog lus tias yuav txo cov pa phem ib puag ncig, txhawb kev lag luam ncig, thiab pab peb cov neeg siv khoom kom ua tiav cov hom phiaj kev txhim kho kom ruaj khov.
