Abstract
Various batch and continuous experiments were carried out in order to investigate the starch wastewater treatment using pellets formed by Aspergillus niger. The results obtained from this study were summarized as follows :
(1) Pellets formed by A. niger were effective for wastewater treatment and had good ability of starch decomposition and TOC removal.
(2) Optimum pH ranges for 2-stage starch decomposition were determined by batch culture experiments.
(3) During the continuous culture period, it was confirmed that the form and high intensity of pellet were maintained under aeration and/or agitation, and that its diameter became larger gradually.
(4) From the results of continuous experiment using the 2-reactor, it was shown that over 90% of starch was decomposed and 75% of TOC was removed.
