During the production of pre-mixed waste, sludges, filter cakes, and other solid wastes—such as paints and varnishes, printing ink waste, and used honing and grinding materials, as well as absorbent and filter materials like oil-soaked cleaning cloths or protective clothing—are processed using absorbent materials like sawdust. This ensures they can be safely disposed of in suitable, approved incineration plants while simultaneously generating recoverable energy.

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