CURRENT TRENDS FOR THE USE OF SLUDGE FROM URBAN TREATMENT PLANTS IN AGRICULTURE
Abstract
One of the main environmental problems of the existence and development of modern cities is the recycling of domestic and industrial wastewater. Sewage sludge accumulates on the territory of the treatment plant, which is a multicomponent mixture of substances mainly of organomineral origin.
This article provides a brief summary analysis of current trends in the utilization of sludge from urban wastewater treatment plants in agriculture. The main directives and regulations related to the use of sludge in agriculture in the European Union and Bulgaria are presented. Data on the sludge used in agriculture in European countries are presented. The benefits and risks of introducing sediments into the soil and their impact on soil microflora are analyzed.
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