关键词: |
conditioning, thickening, stabilization, dewatering, thermal conversion, water treatment, residuals, environmental management, waste disposal, biotechnology, drying, processes, research needs |
摘要: |
Biosolids (sewage sludge) are the nutrient-rich organic materials resulting from treatment and processing of wastewater residuals. U.S. Environmental Protection Agency (U.S. EPA) estimates that the publicly owned wastewater treatment works (POTW) generate over 8 million tons (dry weight) of sewage sludge annually. The technologies in this document help reduce the volume of residuals, and produce biosolids that can be used, help improve soil fertility and tilth, while decreasing the use of inorganic fertilizers, and promote the conservation of energy. This document provides information regarding emerging biosolids management technologies organized into three categories based on their stage of development: Embryonic, Innovative, and Established. |