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Problematika zpracování a následného využití čistírenských kalů
Zidek, Michal
Sludge treatment and its processing problematics and subsequent use of sewage sludge are nowadays much discussed issues. Requirements for ecologic and environmentally friendly disposal of sludge are continuously increasing. These requirements lead to an increase of energy, technology and economic performance of sludge treatment, particularly in relation to the current legislative conditions in this area. The issue of sludge treatment is therefore one of the main topics in the operation of wastewater treatment plants in Modřice, which serves as the "central" wastewater treatment plant for Brno city and its surroundings. Nowadays is sludge in Modřice stabilized by anaerobic mesophilic fermentation and sanitized by drying or liming. Values of proposed parameters and operational data on the input to the slurry line in some cases differ, e.g. sludge concentration in the reservoir of the primary sludge, and the concentration and volume flows in the sludge thickening tank. This is due to the nature of entering waste water (higher total pollution in them) and limits of subsequent technologies. Despite these deficiencies are achieved proposed and required legislative parameters of sludge in output.

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