In terms of biological wastewater treatment processes used for the treatment of municipal wastewater excess activated sludge is inevitably generated, which needs to be removed from the wastewater treatment process and must be properly processed, recycled, and disposed of. The handbook provides information on wastewater and sewage sludge management techniques, treatment and recycling technologies, various possible alternative solutions to ensure the high quality, economic and environmentally friendly management of it. The handbook is developed on the basis of the technical solutions and economic calculations included in the national planning document “Sewage Sludge Management Strategy in Latvia” (project), resulting from an analysis of the existing situation in terms of the project “Implementation of River Basin Management Plans of Latvian towards good surface water status” (LIFE18 IPE/LV/000014 – LIFE GOODWATER IP) that are included in the deliverables of the project.