Noma iyiphi into ingalimala ngokusetshenziswa okuqhubekayo, ikakhulukazi imikhiqizo kagesi. Kodwa-ke, izinto ezilimele azilahlwa ngokuphelele futhi zingaphinde zenziwe kabusha, njengoba kunjalo PCB. Ngaphezu kwalokho, ngokuqhubeka kwesayensi nobuchwepheshe, inani lemikhiqizo ye-elektroniki lenyuke kakhulu, okunciphise impilo yabo yokusebenza. Imikhiqizo eminingi ilahlwa ngaphandle kokulimala, okuholela ekuchithekeni okukhulu.

Imikhiqizo embonini ye-elekthronikhi ivuselelwa ngokushesha okukhulu, futhi nenombolo yama-PCBS alahliwe nayo iyashaqisa. Njalo ngonyaka, i-UK inamathani angaphezu kuka-50,000 100,000 wamadoti ama-PCBS, kanti iTaiwan inamathani ayi-XNUMX. Ukuphinda kusetshenziswe kabusha kungumgomo wokonga izinsiza nokukhiqiza okuluhlaza. Ngaphandle kwalokho, ezinye izinto zemikhiqizo ye-elekthronikhi zizoba yingozi emvelweni, ngakho-ke ukwenza kabusha kabusha kudingekile.

Izinsimbi eziqukethwe ku-PCB zifaka izinsimbi ezivamile: i-aluminium, ithusi, i-iron, i-nickel, i-lead, i-tin ne-zinc, njll. Izinsimbi eziyigugu: igolide, i-palladium, i-platinum, isiliva, njll. Izinsimbi ezingavamile i-rhodium, i-selenium njalonjalo. I-PCB iqukethe nenani elikhulu le-polymer ngqo noma ngokungaqondile emikhiqizweni kaphethiloli, enenani eliphakeme le-calorific, ingasetshenziselwa ukukhiqiza amandla, kepha futhi nokukhiqizwa kwemikhiqizo yamakhemikhali ahlobene, izingxenye eziningi zinobuthi futhi ziyingozi, uma zilahliwe zizobangela ukungcola okukhulu.

Izifanekiso ze-PCB zakhiwe ngezinto eziningi ezingasetshenziswa kabusha noma zingasetshenziswanga kahle. Ngakho-ke, ukuthi singasetshenziswa kanjani kabusha, sethula izinyathelo zayo:

1. Susa i-lacquer

I-PCB ifakwe insimbi evikelayo, futhi isinyathelo sokuqala sokusebenzisa kabusha ukususa upende. Isikhiphi sopende sinokususa upende okwemvelo nesisuseli sopende se-alkaline, isikhuphuli sopende esinobuthi sinobuthi, siyingozi emzimbeni womuntu nasemvelweni, singasebenzisa i-sodium hydroxide, i-corrosion inhibitor nokunye ukushisa kokushisa.

2. Abaphukile

Ngemuva kokuthi i-PCB isuswe, izophulwa, kufaka phakathi ukuchotshozwa komthelela, ukuchobozwa kwe-extrusion kanye nokugunda kwe-shear. Okusetshenziswa kakhulu ubuchwepheshe bokushisa obugqobhoza bokushisa okubandayo, okungapholisa phansi impahla enzima bese kuyichoboza ngemuva kokufakwa, ukuze insimbi nengeyona insimbi kuhlukaniswe ngokuphelele.

3. Ukuhlunga

Okwenziwe ngemuva kokuchobozwa kudinga ukuhlukaniswa ngokuya ngobuningi, ubukhulu bezinhlayiyana, ukuqhutshwa kukazibuthe, ukuqhutshwa kukagesi nezinye izici zezinto zayo, imvamisa ngokuhlunga okumile nokumanzi. Ukuhlukaniswa okumile kufaka phakathi ukuhlolwa okwomile, ukuhlukaniswa kazibuthe, i-electrostatic, ukuminyana nokuhlukaniswa kwamanje kwe-eddy, njll. Ukuhlukaniswa okumanzi kunezigaba ze-hydrocyclone, flotation, shaker hydraulic, njll. Futhi-ke ungaphinda uyisebenzise.