SOLARE TROCKNUNG VON KLARSCHLAMM - VERBREITUNG, LEISTUNG UND KOSTEN=SOLAR DRYING OF SEWAGE SLUDGE - SCOPE, PERFORMANCE, AND COSTS

19 solar sewage sludge drying plants are under construction or already operational in Germany and 45 wolrdwide. Without additional heating,between 0.6 and 1 ton of water per m2 plant surface and year can be evaporated, with additional heating, up to 3.5 t/m2. Drying costs first anf foremost depend on investment costs, operating costs clearly play a minor role.