Microbial carrier, method for producing microbial carrier, wastewater treatment method, and wastewater treatment system

摘要

The microbial carrier is a microorganism inactivated or reduced in activity in the granular sludge. Alternatively, the methanogen in the granule sludge is deactivated or the activity is reduced. Alternatively, the activity of specific microorganisms in the granular sludge is made superior. This microbial carrier can be obtained, for example, by subjecting granule sludge extracted from the methane fermentation tank 20 to heat treatment using the heat treatment device 16. Since the microorganism carrier is originally a mass in which microorganisms are aggregated, the structure has conditions suitable for the growth of microorganisms, and the microorganisms are well immobilized. Moreover, since it is a carrier derived from microorganisms, disposal after use is easy and the environmental load is small.