WASTE WATER TREATMENT APPARATUS

摘要

Provided is a waste water treatment apparatus that can sufficiently prevent granules formed from aggregations of anaerobic microorganisms from flowing from a reactor. The waste water treatment apparatus (1) is provided with: a reactor main unit (21a) having an introduction opening in the bottom thereof; a supply device (3) that generates a rising flow of waste water; an aggregate layer (22) formed from accumulation of granules (30) in the lower part of the reactor main unit (21a); a carrier (14) that can support anaerobic microbes; an elimination device (27, L2) that eliminates waste water above the carrier (14) from the reactor main unit (21a); and a gas-solid-liquid separation device (10A) with which granules (32) with attached bubbles are introduced toward a surface boundary (15), the granules (30) and the bubbles separated, and the granules (30) that have been separated from the bubbles guided from the surface boundary (15) to an area sandwiched by the aggregate layer (22) and carrier (14) without coming into contact with the carrier (14).