BIOLOGICAL WASTEWATER TREATMENT METHOD AND BIOLOGICAL WASTEWATER TREATMENT DEVICE

摘要

The purpose of this invention is to provide a biological wastewater treatment method and biological wastewater treatment device in which high-load operation in a biological treatment tank is possible. Because ash generated by burning biomass such as EFB (Empty Fruit Bunch), fiber, or PKS (Palm Kernel Shells) does not contain enough organic wastewater, such as POME (Palm Oil Mill Effluent), but does contain the trace nutrient elements necessary for biological treatment such as methane fermentation treatment, by adding said ash to organic wastewater, the organic wastewater is supplemented with the trace nutrient elements, with the result of enabling high-load operation in a biological treatment tank such as a methane fermentation tank (4).