ANALYSIS OF ALTERNATIVE CHANCES FOR SLUDGE TREATMENT AT NEW CENTRAL WASTE WATER TREATMENT PLANTRenata Janja Slovša
, 2016, magistrsko delo
Opis: The purpose of this master’s thesis is to present the operation of a large municipal waste water treatment plant in Slovenia with over 300.000 PE and its efficiency, and through a theoretical analysis to present the current practice and alternative options of sewage sludge treatment in Slovenia and around the globe. The main objective of master's thesis is to present the most possible alternative scenarios for the final managing of sewage sludge from WWTPs and at this objective we take into consideration the impact on Carbon Foot Print (CFP).
Due to scenarios (thermal utilisation of dried sludge (90% d.m.) in a cement plant, co-incineration of dehydrated sludge (25% d.m.) in a local power plant, thermal utilisation of dried sludge (90% d.m.) in a local power plant, incineration of dehydrated sludge (25% d.m.) in own plant, incineration of dried sludge (90% d.m.) in own plant, and also prohibited scenarios such as sludge utilisation in the soil -fertilization, sludge disposal in the landfill) we calculated CFP and we find out that CFP of various methods of thermal sludge treatment are more or less similar but absolutely smaller than convetional sewage sludge treatment. The CFP is more favourable for dehydrated sludge than for pre-dried sludge, and it is also more favourable for treatment in industrial furnaces (heat power plant, cement plant) than in individual waste incineration facilities.
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Ključne besede: odpadne vode, odpadno blato iz čistilnih naprav, čistilne naprave, primerjalne analize, analiza življenjskega cikla, ogljični odtis, toplogredni plini
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