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Light and Water are often associated with rainbows - inspiring songs..., but normally not with information. But indeed - a lot of information concerning organic impurities is hidden in this system. COD and TOC parameters are consisting of humic substances: proteins, detergents and other chemical compounds of households, tannins / lignins of the paper industry, organic impurities of the chemical industry...
Today, sustainability-orientated concepts of exploitation and disposal of sewage sludges are more and more based on drying techniques as central element. The process of drying itself as well as the necessary technology is regarded as to be perfected and well known. Sludge drying can be realized quickly and economically. On principle it is needed for all processes of advanced sludge treatment. On closer...
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