Evaluating the feasibility of ratio control strategy for achieving partial nitritation in a continuous floccular sludge reactor: Experimental demonstration

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• 作者：Wenru Liu ; Dianhai Yang ; ^{yangdianhai@tongji.edu.cn}
• 关键词：Partial nitritation ; Flocs ; Low dissolved oxygen ; Ammonium excess ; Nitrosomonas ; Nitrospira
• 刊名：Bioresource Technology
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：224
• 期：Complete
• 页码：94-100
• 全文大小：768 K
• 卷排序：224

文摘

Applying ratio control in floccular system to achieve nitritation was investigated. Nitritation was not obtained by maintaining DO/TAN ratio below 0.02 mg O2·mg−1 N. The high AOB/NOB ratio of 18.75%/1.35% benefits from the excess of ammonium. Weak oxygen gradients and enrichment of Nitrospira caused the nitritation failure.