This paper made a study of the variety regulation of pathogens in the activated sludge through biological fermentation using Aspergillus niger as zymophyte.

采用黑曲霉为发酵剂活性污泥进行全程无理并各种的生长变化进行监测。结果表明总量在发酵过程中呈"马鞍型"变化。