Estação de tratamento de efluentes – da Bahia Specialty Cellulose (BSC): operação e gerenciamento de resíduo sólido (lodo)

Abstract

This work aims to show how the solid waste operation and management are processed in Bahia Specialty Cellulose (BSC) Wastewater Treatment Plant (WWTP), in its primary stage. First of all, searching for a bibliographic review of the major themes that guide a WWTP, and also specifying how it is treated in a pulp mill, emphasizing the basic and specific concepts, for example, the main variables involved, DBO, DQO, suspended solids, turbidity, flow, etc., as well as the equipment involved in the WWTP operating process, such as decanter, centrifuges, mechanized grids, etc. It is also shown how solid waste management (sludge) is performed. Extracted from WWTP, this sludge which is basically made up of cellulose fiber, is stored in truck buckets and taken to warehouses until they are sold to sludge processing companies. They perform, for example, composting for fertilization and hydroseeding.