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The purpose of the research carried out by the authors is represented by the use of waste, such as that from agriculture, from wastewater treatment plants (WWTP) and from the fiber glass industry in order to obtain construction materials (bricks). The authors, as part of a research project, designed and tested new recipes for making bricks, starting from a series of existing waste materials in significant quantities. By using different types of waste and re-introducing them into the economic circuit, a better protection of the environment is ensured in the current context of climate change. [ABSTRACT FROM AUTHOR]

The problem of sludge management in wastewater treatment plants remains a current issue. The characteristics of the sludge depend on the degree of pollution and the nature of the pollutants in the wastewater undergoing purification and on the sludge treatment methods. Before utilization or disposal, the sludge must be treated, with the aim of reducing the water content, fermentation properties and the presence of pathogens. Treated sludge can be used or disposed of, most commonly, in three ways: agricultural use, incineration or landfilling, depending on the properties of the sludge, as well as the option of the treatment plant operator. Other disposal and recovery methods exists, but they are less used. Researchers are looking for new ways to utilize this type of waste in order to minimize the negative impact both on the environment and on the operators of treatment plants. The article presents a way of handling for this waste - the use of sludge for the manufacture of construction materials. Agricultural waste can also be incorporated into building materials. [ABSTRACT FROM AUTHOR]