Xa kuziwa ekuphatheni inkunkuma yamashishini, ngakumbi i-sludge, umsebenzi unokuba nzima kwaye udle ixesha. I-Sludge yimathiriyeli engqindilili, ebonakalayo kwaye kunzima ukuyihambisa kunye nokulahla ngokufanelekileyo. Ngethamsanqa, ukuqhubela phambili kwetekhnoloji kukhokelele kuphuhliso olusebenza kakuhle kakhulu noluthembekileyo...
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