Ezweni elihlala lishintsha lokukhiqizwa kwezinto zikagesi, ukulawulwa kwekhwalithi kwamabhodi wesekethe aphrintiwe (ama-PCB) kubalulekile. Isici esisodwa esivame ukunganakwa esinomthelela omkhulu kwikhwalithi ye-PCB ukusetshenziswa kwezingxenye ze-granite enkambisweni yokukhiqiza. Njengoba yaziwa ngokuqina kwayo nokuzinza, i-granite idlala indima ebalulekile ekuqinisekiseni ukunemba nokunemba ekukhiqizweni kwe-PCB.
Izingxenye ze-granite, njengetafula lokuhlola nama-jig, zinikeza indawo ezinzile neyisicaba ebalulekile ekulinganisweni nasekuhlanganisweni kwama-PCB. Izakhiwo ze-granite ezingokwemvelo, okuhlanganisa ukumelana kwayo nokwanda kokushisa nokudlidliza, zinegalelo endaweni yokukhiqiza ehambisanayo. Lokhu kuzinza kubalulekile ekugcineni ukubekezelelana okuqinile okudingekayo kumadivayisi kagesi esimanje, njengoba ngisho nokuphambuka okuncane kungaholela ezinkingeni zokusebenza noma ekwehlulekeni komkhiqizo.
Ngaphezu kwalokho, ukusebenzisa i-granite enqubweni yokulawula ikhwalithi kuthuthukisa ukunemba kwezilinganiso ezithathwa ngesikhathi sokuhlolwa. Amathuluzi okulinganisa anembile kakhulu, uma ebekwa ebusweni be-granite, anciphisa amaphutha abangelwa ukungalungi kobuso. Lokhu kuphumela kudatha ethembeke kakhudlwana, okuvumela abakhiqizi ukuthi bathole amaphutha ekuqaleni komjikelezo wokukhiqiza futhi basebenzise izinyathelo zokulungisa ngesikhathi esifanele.
Ngaphezu kwalokho, izingxenye ze-granite kulula ukuzihlanza nokuzinakekela, okuyinto ebalulekile endaweni yokukhiqiza lapho ukungcola kungathinta khona ikhwalithi ye-PCB. Ukungangeni imigodi kwe-granite kuvimbela ukumuncwa kothuli namakhemikhali, okuqinisekisa ukuthi indawo ihlala ihlanzekile futhi ivumela ukukhiqizwa kwekhwalithi ephezulu.
Ekuphetheni, umthelela wezingxenye ze-granite ekulawulweni kwekhwalithi ye-PCB awunakubukelwa phansi. Ngokuhlinzeka ngendawo ezinzile, enembile nehlanzekile yokukhiqiza nokuhlola, i-granite idlala indima ebalulekile ekuthuthukiseni ikhwalithi iyonke yama-PCB. Njengoba isidingo semikhiqizo ye-elekthronikhi esebenza kahle siqhubeka nokukhula, ukutshala imali ezixazululweni ezisekelwe ku-granite kubalulekile kubakhiqizi abahlose ukugcina inzuzo yokuncintisana nokuqinisekisa ukuthembeka komkhiqizo.
Isikhathi sokuthunyelwe: Jan-14-2025