Chilichonse chitha kuwonongeka chifukwa chogwiritsa ntchito mosalekeza, makamaka zinthu zamagetsi. Komabe, zinthu zomwe zawonongeka sizowonongeka ndipo zitha kupangidwanso, monga zilili PCB. Kuphatikiza apo, kupita patsogolo kwa sayansi ndi ukadaulo, kuchuluka kwa zinthu zamagetsi kwawonjezeka kwambiri, zomwe zafupikitsa moyo wawo wantchito. Zinthu zambiri zimatayidwa popanda kuwonongeka, zomwe zimawononga kwambiri.

Zogulitsa zamagetsi zamagetsi zimasinthidwa mwachangu kwambiri, ndipo kuchuluka kwa ma PCBS omwe adatayidwa ndikodabwitsanso. Chaka chilichonse, UK imakhala ndi zinyalala zoposa matani 50,000, pomwe Taiwan ili ndi matani 100,000. Kubwezeretsanso ndi njira yopulumutsa chuma ndikupanga zobiriwira. Kuphatikiza apo, zinthu zina pazinthu zamagetsi zitha kuwononga chilengedwe, motero kuzikonzanso ndizofunikira.

Zitsulo zomwe zili mu PCB zimaphatikizapo zitsulo wamba: zotayidwa, mkuwa, chitsulo, faifi tambala, lead, malata ndi zinc, ndi zina zambiri. Zitsulo zamtengo wapatali: golide, palladium, platinamu, siliva, ndi zina zambiri. Zochepa zitsulo rhodium, selenium ndi zina zotero. PCB imakhalanso ndi polima wambiri mwachindunji kapena ayi m’njira zopangira mafuta, okhala ndi mtengo wokwanira wama calorific, atha kugwiritsidwa ntchito kupangira mphamvu, komanso kupanga zopangidwa ndi mankhwala enaake, zambiri mwazigawozo ndizowopsa komanso zowopsa, ngati zitayidwa zingayambitse kuipitsa kwakukulu.

Zithunzi za PCB zimapangidwa ndi zinthu zingapo zomwe zimatha kugwiritsidwanso ntchito ngakhale zitagwiritsidwa ntchito bwino. Chifukwa chake, momwe tingabwezeretsere, timayambitsa njira zake:

1. Chotsani lacquer

PCB imakhala yokutidwa ndi chitsulo choteteza, ndipo gawo loyamba pakubwezeretsanso ndikuchotsa utoto. Chotsitsa utoto chimachotsa utoto ndi chopangira utoto wamchere.

2. Osweka

Pambuyo pa PCB itachotsedwa, idzaphwanyidwa, kuphatikizapo kuphwanya mphamvu, extrusion kuphwanya ndi kukameta ubweya. Chomwe chimagwiritsidwa ntchito kwambiri ndi ukadaulo wotentha kwambiri wozizira kwambiri womwe ungaphwanye, womwe ungaziziritse zinthu zolimba ndikuziphwanya utatha kuvundikira, kotero kuti chitsulo ndi chosakhala chitsulo chimasiyanitsidwa kwathunthu.

3. Kusanja

Zinthuzo mutaphwanya zimayenera kupatulidwa kutengera kuchuluka kwake, kukula kwake, maginito madutsidwe, madutsidwe amagetsi ndi zina mwa zigawo zake, nthawi zambiri polemba kouma ndi konyowa. Kupatukana kowuma kumaphatikizapo kuwunika kowuma, kupatukana kwa maginito, ma electrostatic, kachulukidwe ndi kupatukana kwamakono, ndi zina zambiri. Kupatukana kwamadzi kumakhala ndi mtundu wa hydrocyclone, kusinthasintha, kugwedeza kwamadzimadzi, ndi zina zambiri. Ndipo mutha kuyigwiritsanso ntchito.