The algae bloom biomass in the water reservoir 'Rybnik' is an importan
t problem, and not only in Poland [1, 2]. The algae growth in the wate
r affects its odour, colour, taste and quality [3]. Algae bloom biomas
s removed from water can be treated in the following ways: disposal in
sanitary landfills, storage on special dumping grounds, fermentation,
dewatering and incineration. In this paper the physicochemical compos
ition and thermal analysis of the biomass of algae bloom dried at 378
K or in the open air are described. Thermal analytical measurements we
re made in an air atmosphere.