SELECTION METHOD FOR MICROORGANISM FOR WASTEWATER TREATMENT AND WASTEWATER TREATMENT USING MICROORGANISM SELECTED BY THE METHOD

摘要

PROBLEM TO BE SOLVED: To provide a method for efficiently obtaining a microorganism that can effectively and stably carry out wastewater treatment without being influenced by the variation in treatment conditions and the transition of seasons, and provide a method for stabilized wastewater treatment by using the selected microorganism.

SOLUTION: The method for selecting the microorganism for wastewater treatment comprising the following steps can efficiently prepare the microorganism that is effective for wastewater treatment and the wastewater treatment using the selected microorganism can achieve the stabilized treatment. The method comprises steps (1) where the wastewater to be treated is treated with activated sludge at a temperature lower than 20°C; (2) where solid matter is removed from the activated sludge after the step (1) to collect an aqueous solution; and (3) where the microorganism is selected that can more assimilate organic substances contained in the solution obtained in the step (2) than organic substances contained in the wastewater to be treated.

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