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Description
The paper deals with the analysis of the possibilities of using selected industrial wastes - sludge from industrial waste water treatment from paper production for energy purposes. Industrial waste water, which is produced during processes such as pulping, sorting and paper production, as well as from sand filter filtration, is cleaned in the WWTP on the sedimentation-flotation tank. After purification, the waters are mixed with treated sewage water and discharged into the recipient. During wastewater treatment, paper sludge is produced as a by-product. Sludge from the cleaning process is dewatered on a gravity dewatering machine. The production of biofuels from sludge from the paper industry is an interesting and potentially sustainable way to use waste from the paper industry. It is also important to note that despite the potential benefits of biofuels, their cost is still significantly higher than that of fossil fuels. A number of diverse raw materials enter the paper production process, some of which contain a significant amount of natural radionuclides. In this sense, the resulting waste sludge can be considered a technologically enriched natural radioactive material - TENORM. For a comprehensive assessment of its use for energy purposes, it is necessary to analyze the content of natural radionuclides. The paper presents the preliminary results of the analysis of sludge samples from municipal wastewater treatment and paper sludge samples.
Keywords: paper sludge, wastewater sludge, TENORM
Acknowledgement: This work was supported by Scientific Grant Agency of the Ministry of Education, Science, Research Development and Youth of the Slovak Republic under research contract VEGA project No. 1/0524/23 „Assesment of biodegradation in the terms of the energy potential of waste".
