Abstract
In Romania, for more than 50% of the amount of sewage sludge, the life cycle ends with the most unfavorable stage of the waste management hierarchy or storage. This study indicates the feasibility of using sewage sludge as an alternative fuel in clinker rotary kilns by presenting theoretical information and personal research data.
Highlights
Alternative for the Use of Sewage Sludge in RomaniaThe rise in fuel prices, the rapid reduction of non-renewable resources due to increased demand, population awareness and climate change problems are of interest in lengthening the life cycle of products, rethinking how to deal with waste, implicitly considering waste as a valuable resource [4, 13]
In Romania, for more than 50% of the amount of sewage sludge, the life cycle ends with the most unfavorable stage of the waste management hierarchy or storage
In this case, taking into account the results of the analyzes and the benefits of using sewage sludge as an alternative fuel, the steps are the study of the environmental impact of the emissions resulting from the co-incineration process
Summary
The rise in fuel prices, the rapid reduction of non-renewable resources due to increased demand, population awareness and climate change problems are of interest in lengthening the life cycle of products, rethinking how to deal with waste, implicitly considering waste as a valuable resource [4, 13] According to these facts, the sewage sludge can present several forms of recovery. The feasibility of using ash from incineration of sewage sludge as a substitute for cement and / or sand in cement-based building materials is another encouraging aspect of incineration [14], but this involves major costs and very advanced management [15] Both theory and practice demonstrate that sludge is typically treated prior to disposal to reduce water content, fermentation tendency and pathogens by using treatment processes such as thickening, dehydration, stabilization, disinfection and drying thermal [10, 16, 17]. The following section presents the study of the use of secondary by products from the cement industry as an alternative fuel [26]
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