Effect of pH in Reactor and Hydraulic Retention Time on Continuous Starch Wastewater Treatment with Aspergillus niger Pellets.
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概要
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In continuous starch wastewater treatment with <I>Aspergillus niger</I> pellets, stability of pellets and efficiencies of starch decomposition and total organic carbon (TOC) removal were considerably affected on both pH in the reactor and hydraulic retention time (HRT) . The form of pellets was maintained without bulking or collapsing under more than 20 days'operation in case that pH and HRT were set to 3.0 and 8 hrs, respectively. In addition, microbial contamina tion was effectively controlled and high efficiency of starch decomposition (80%) was obtained.However, negligible amount of TOC was removed. Since those residual components, containing glucose mainly, were thought to be degraded readily by activated microorganisms, experimental investigation of multi-stage treatment with the fungal and activated sludge processes was carried out. Consequently, starch and TOC from the starch wastewater were removed at 80% and it was suggested that multi-stage treatment process was effective for high strength starch wastewater.
- 日本水処理生物学会の論文
日本水処理生物学会 | 論文
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