NITRITE TYPE NITRIFICATION-REACTIVE SLUDGE, PRODUCTION METHOD THEREFOR, PRODUCTION APPARATUS THEREFOR, AND WASTE WATER TREATMENT METHOD AND WASTE WATER TREATMENT APPARATUS

摘要

A method for producing a nitrite type nitrification-reactive sludge includes the step of subjecting an activated sludge to alkali treatment so that the pH of the activated sludge containing at least the ammonium oxidizing bacteria and nitrite oxidizing bacteria can be 10 or higher, in order to accumulate ammonium oxidizing bacteria with higher priority in the activated sludge.