ORGANIC WASTEWATER TREATMENT FACILITY, ORGANIC WASTEWATER TREATMENT METHOD, AND RECONSTRUCTION METHOD OF ORGANIC WASTEWATER TREATMENT FACILITY

摘要

To provide an organic wastewater treatment facility possible to improve treatment efficiency of waste liquid after solid-liquid separation, and possible to perform effective control of rise in offensive odor during storage of the organic wastewater and solid-liquid separated solid content.SOLUTION: There is provided an organic wastewater treatment facility, including: a wastewater receiving tank 10 for receiving organic wastewater; a pre-dehydration storage tank 12 for storing the organic wastewater under anaerobic condition; reaction tanks 13 and 14 in which a coagulant is added to the organic wastewater withdrawn from the pre-dehydration storage tank; dewatering equipment 15 for dewatering the organic wastewater to which the coagulant has been added; and biological treatment equipment 17, 18, 19 for biological treatment of solid-liquid separated organic wastewater by microorganisms, the biological treatment equipment further including a reactor 20 filled with a biological treatment aid that makes a specific group of microorganisms dominant among the microorganisms; and a sludge supply path R3 for supplying sludge in which specific microorganism groups are made dominant by the reactor to organic wastewater on the upstream side of the reaction tank.SELECTED DRAWING: Figure 1