Abstract

The aim of research is to check the possibility of composting stone wool waste using sewage sludge. The problem is huge amounts of dumped waste (sewage sludge, production waste in the stone wool) without any treatment. There is no practice to compost production waste in the stone wool in Lithuania. Stone wool waste can be one of bulk materials in the process of sewage sludge composting and can improve the quality of the prepared compost. Production waste in the stone wool contains phenol and formaldehyde that are very hazardous pollutants, and therefore it is important to follow its concentration during the composting process. The paper analyses the degradation of formaldehyde concentration. Adding stone wool waste made no degradation in the composting process. The most remarkable reduction in formaldehyde concentration is observed during the first half of the composting period. The average composting duration is two months which is a sufficient period for formaldehyde degradation.

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