Filamentous bacteria detection apparatus and filamentous bacteria detection method

摘要

PROBLEM TO BE SOLVED: To accurately detect filamentous bacteria which present in sludge of a biological treatment bath.SOLUTION: Whether filamentous bacteria candidates are filamentous bacteria or not is discriminated by observing the phase difference of an examination subject sampled from a biological treatment bath according to the activated sludge process to acquire an image of a component with a wavelength of 500-800 nm, binarizing the acquired image with a given threshold value, recognizing an independent region in the image after binarization process as a candidate of filamentous bacteria, converting the characteristics of the forms of the candidate of filamentous bacteria into numerical form, and applying the given threshold value to the numerical group.