Method for enriching ammonia-oxidizing archaea in sewage treatment system

• Main Authors: LIANG YUHAI, YAO LITING, ZOU JIAXING, CUI LIHUA, WANG QIXIN, HAN GA-YOUNG, YU GUANGWEI, ZHENG PEIHAN, HAN QI
• Format: Patent
• Language: Chinese; English
• Published: 01.11.2022
• Subjects: CHEMISTRY; METALLURGY; TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE

The invention discloses a method for enriching ammonia-oxidizing archaea in a sewage treatment system. The method comprises the following steps: starting a quorum sensing mechanism of AOA in a sewage treatment system by adding exogenous signal molecules, firstly inoculating whole-process nitrification sludge into a reactor, adding C6-HSL and/or C10-HSL into wastewater with the influent ammonia nitrogen concentration of 100-136 mg/L under the conditions that the dissolved oxygen is 2 mg/L or more and the temperature is room, and operating in a sequencing batch mode. According to the method disclosed by the invention, the relative abundance of the AOA is effectively improved, and the enrichment of the AOA is realized; the problems of low AOA relative abundance, high enrichment culture difficulty and the like in a sewage treatment system are solved; the enrichment culture of the AOA in the sewage treatment system is realized, the relative abundance of the AOA is improved, and a method is provided for the enrichm